There are often no readily ascertainable market prices for a substantial majority of illiquid investments of our investment funds. We determine the fair value of the investments of each of our investment funds at least quarterly based on the fair value guidelines set forth by generally accepted accounting principles in the United States. The fair value measurement accounting guidance establishes a hierarchal disclosure framework that ranks the observability of market inputs used in measuring financial instruments at fair value. The observability of inputs is impacted by a number of factors, including the type of financial instrument, the characteristics specific to the financial instrument and the state of the marketplace, including the existence and transparency of transactions between market participants. Financial instruments with readily available quoted prices, or for which fair value can be measured from quoted prices in active markets, will generally have a higher degree of market price observability and a lesser degree of judgment applied in determining fair value.

We have presented in this reportForm 10-K information relating to the historical performance of our investment funds. The historical and potential future returns of the investment funds that we advise, however, are not directly linked to returns on our common units. Therefore, any continued positive performance of the investment funds that we advise will not necessarily result in positive returns on an investment in our common units. However, poor performance of the investment funds that we advise would cause a decline in our revenue from such investment funds, and could therefore have a negative effect on our performance, our ability to raise future funds and in all likelihood the returns on an investment in our common units.

income of such business (with adjustments for certain interest and taxes, and for taxable years before 2022, depreciation and amortization). These new rules, as well as any future changes in such tax law or policy to eliminate or substantially limit these income tax deductions, as has been discussed from time to time in various jurisdictions, wouldcould reduce the after-tax rates of return on the affected investments, which may have an adverse impact on our business and financial results. On October 5, 2015, the OECD published additional papers under the BEPS initiative. In action 4, the OECD recommends that countries adopt a limitation on excessive deductions under a fixed ratio rule and supplemented by a worldwide group ratio and certain targeted rules as needed. It is anticipated that ratios may range between 10% and 30%. It is still unclear how different countries will implement the various recommendations and it is unclear how this will affect the current deductibility of interest in the various jurisdictions. See “— Our funds make investments in companies that are based outside of the United States, which may expose us to additional risks not typically associated with investing in companies that are based in the United States.”

funds make. In addition, to the extent that any changes in tax law make debt financing less attractive to certain categories of borrowers, this could adversely affect the investment opportunities for our credit-focused funds.

The transaction fees that we earn are driven in part by the pace at which our funds make investments and the size of those investments. Any decline in that pace or the size of such investments could reduce our transaction fees and could make it more difficult for us to raise capital on our anticipated schedule. Many factors could cause such a decline in the pace of investment, including:

The alternative asset management business is intensely competitive, with competition based on a variety of factors, including investment performance, business relationships, quality of service provided to investors, investor liquidity and willingness to invest, fund terms (including fees), brand recognition, types of products offered and business reputation. Our alternative asset management business, as well as our investment funds, competes with a number of private equity funds, specialized investment funds, hedge funds, corporate buyers, traditional asset managers, real estate development companies, commercial banks, investment banks and other financial institutions (as well as sovereign wealth funds and other institutional investors).

Additionally, developments in financial technology (or fintech), such as a distributed ledger technology (or blockchain), have the potential to disrupt the financial industry and change the way financial institutions, as well as asset managers, do business. A number of factors serve to increase our competitive risks:

Before making private equity and other investments, we conduct due diligence that we deem reasonable and appropriate based on the known facts and circumstances applicable to each investment. The objective of the due diligence process is to identify attractive investment opportunities based on the known facts and circumstances and initial risk assessment

Many of our investment funds invest in securities that are not publicly traded. In many cases, our investment funds may be prohibited by contract or by applicable securities laws from selling such securities for a period of time. Our investment funds will not be able to sell these securities publicly unless their sale is registered under applicable securities laws, or unless an exemption from such registration is available. The ability of many of our investment funds, particularly our private equity funds, to dispose of investments is heavily dependent on the public equity markets. For example, the ability to realize any value from an investment may depend upon the ability to complete an initial public offering of the portfolio company in which such investment is held. Even if the securities are publicly traded, large holdings of securities can often be disposed of only over a substantial length of time, exposing the investment returns to risks of downward movement in market prices during the intended disposition period. Moreover, because the investment strategy of many of our funds, particularly our private equity funds, often entails our having representation on our funds’ public portfolio company boards, our funds may be able to effect such sales only during limited trading windows. Additionally, certain provisions of the U.S. federal securities laws (e.g., Exchange Act Section 16) may constrain our investment funds' ability to effect purchases or sales of publicly traded securities. Accordingly, under certain conditions, our investment funds may be forced to either sell securities at lower prices than they had expected to realize or defer, potentially for a considerable period of time, sales that they had planned to make.

We have made and expect to continue to make significant principal investments in our current and future investment funds. Contributing capital to these investment funds is subject to significant risks, and we may lose some or all of the principal amount of our investments.

The investments of our private equity funds are subject to a number of inherent risks.

Our results are highly dependent on our continued ability to generate attractive returns from our investments. Investments made by our private equity funds involve a number of significant risks inherent to private equity investing, including the following:

Investments in our real estate funds will be subject to the risks inherent in the ownership and operation of real estate and real estate-related businesses and assets. These risks include the following:

As an element of our investment style, we may pursue unusually complex investment opportunities. This can often take the form of substantial business, regulatory, tax, or legal complexity that would deter other asset managers. Our tolerance for complexity presents risks, as such transactions can be more difficult, expensive and time-consuming to finance and execute; it can be more difficult to manage or realize value from the assets acquired in such transactions; and such transactions sometimes entail a higher level of regulatory scrutiny or a greater risk of contingent liabilities. The complexity of these transactions could also make it more difficult to find a suitable buyer. Any of these risks could harm the performance of our funds.

Investments by many of our investment funds will include debt instruments and equity securities of companies that we do not control. Such instruments and securities may be acquired by our investment funds through trading activities or through purchases of securities from the issuer. In addition, our funds may acquire minority equity interests in large transactions, which may be structured as “consortium transactions” due to the size of the investment and the amount of capital required to be invested. A consortium transaction involves an equity investment in which two or more private equity or other firms serve together or collectively as equity sponsors. We participated in a number of consortium transactions in prior years due to the increased size of many of the transactions in which we were involved. Consortium transactions generally entail a reduced level of control by our firm over the investment because governance rights must be shared with the other consortium sponsors. Accordingly, we may not be able to control decisions relating to a consortium investment, including decisions relating to the management and operation of the company and the timing and nature of any exit. Our funds may also dispose of a portion of

Our investment funds may invest in assets denominated in currencies which that differ from the currency in which the Fund is denominated.

Many of our investment funds generally invest a significant portion of their assets in the equity, debt, loans or other securities of issuers that are headquartered outside of the United States, such as China, India, Indonesia, Latin America, MENA and Sub-Saharan Africa. A substantial amount of these foreign investments consist of investments made by our carry funds. For example, as of December 31, 2015,2017, approximately 40%38% of the equitycumulative capital invested by our Corporate Private Equity, Real Assets and Global Credit carry funds was attributable to foreign investments. Investments in non-U.S. securities involve risks not typically associated with investing in U.S. securities, including:

If, at the end of any of the life of aour CPE, Real Assets and Global Credit carry fundfunds (or earlier with respect to certain of our funds), the carry fund has not achieved investment returns that (in most cases) exceed the preferred return threshold or (in almost all cases) the general partner receives net profits over the life of the fund in excess of its allocable share under the applicable partnership agreement, we will be obligated to repay an amount equal to the extent to which carried interest that was previously distributed to us exceeds the amounts to which we are ultimately entitled. TheseThis repayment obligation is known as a “giveback” obligation. As of December 31, 2017, we had accrued a giveback obligation of $66.8 million, representing the giveback obligation that would need to be paid by the firm if the carry funds were liquidated at their current fair values at that date. The majority of these repayment obligations may beare related to amounts previously distributed to our senior Carlyle professionals prior to the completion of our initial public offering, with respect to which our common unitholders did not receive any benefit. This obligation is known as a “giveback” obligation. As of December 31, 2015, we had2017, approximately $28.9 million of the total accrued a giveback obligation of $252.0 million, inclusive of giveback obligations accrued for Consolidated Funds,is

When payment of a giveback obligation is anticipated (or "realized"), the portion of this liability that is expected to be borne by the unitholders (i.e., the amount not expected to be funded by Carlyle professionals) has the effect of reducing our Distributable Earnings, which therefore may result in a lower distribution to unitholders. Any remaining giveback obligation required to be funded on behalf of our Legacyfunds (most of which is attributable to Energy FundsIV and Renew II) would generally be due upon the liquidation of the remaining assets from the funds, which is anticipated to occur in 2017 for Energy II and 2022 for Renew II. funds.

If, as of December 31, 2015,2017, all of the investments held by our carry funds were deemed worthless, the amount of realized and distributed carried interest subject to potential giveback would have been $1.9$0.7 billion, on an after-tax basis where applicable. Since inception, we have paid $53.9$199.6 million backin aggregate giveback obligations, which was funded primarily through collection of employee receivables related to fund investors to satisfy our giveback obligations.obligations and from Carlyle professionals and other non-controlling interests for their portion of the obligation.

Although a giveback obligation is several to each person who received a distribution, and not a joint obligation, the governing agreements of our funds generally provide that to the extent a recipient does not fund his or her respective share, then we may have to fund such additional amounts beyond the amount of carried interest we retained, although we generally will retain the right to pursue any remedies that we have under such governing agreements against those carried interest recipients who fail to fund their obligations. As of December 31, 2015,2017, approximately $153$37.9 million of our $66.8 million accrued giveback obligation is the responsibility ofattributable to various current and former senior Carlyle professionals. We have historically withheld a portion of the cash from carried interest distributions to individual senior Carlyle professionals and other employees as security for their potential giveback obligations. We also set aside cash reserves from carried interest we receive and retain for potential giveback obligations that we may be required to fund in the future. However, we have not set aside additional cash reserves relating to the secondary liability we retain for the giveback obligations attributable to our individual senior Carlyle professionals and other employees if they fail to satisfy these obligations. We may need to use or reserve cash to repay such giveback obligations instead of using the cash for other purposes. See “Part I. Item 1. Business -StructureBusiness—Structure and Operation of Our Investment Funds -IncentiveFunds—Incentive Arrangements / Fee Structure” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations- Operations—Contractual Obligations- Obligations—Contingent Obligations (Giveback)” and Notes 2 and 119 to the consolidated financial statements.statements included in this Annual Report on Form 10-K.

In most cases, the companies in which our investment funds invest have, or are permitted to have, outstanding indebtedness or equity securities that rank senior to our fund’s investment. By their terms, such instruments may provide that their holders are entitled to receive payments of dividends, interest or principal on or before the dates on which payments are to be made in respect of our investment. Also, in the event of insolvency, liquidation, dissolution, reorganization or bankruptcy of a company in which an investment is made, holders of securities ranking senior to our investment would typically be entitled to receive payment in full before distributions could be made in respect of our investment. After repaying senior security holders, the company may not have any remaining assets to use for repaying amounts owed in respect of our investment. To the extent that any assets remain, holders of claims that rank equally with our investment would be entitled to share on an equal and ratable basis in distributions that are made out of those assets. Also, during periods of financial distress or following an insolvency, the ability of our funds to influence a company’s affairs and to take actions to protect their investments may be substantially less than that of the senior creditors.

The governing agreements of substantiallyalmost all of our carry funds provide that, subject to certain conditions, third-party investors in those funds have the right to remove the general partner of the fund for cause or to accelerate the liquidation date of the investment fund without cause by a simple majority vote, resulting in a reduction in management fees we would earn from such investment funds and a significant reduction in the expected amounts of total carried interest and incentive fees from those funds. Carried interest and incentive fees could be significantly reduced as a result of our inability to maximize the value of investments by an investment fund during the liquidation process or in the event of the triggering of a “giveback” obligation. Finally, the applicable funds would cease to exist after completion of liquidation and winding-up. In addition, the governing agreements of certain of our investment funds provide that in the event certain “key persons” in our investment funds do not meet specified time commitments with regard to managing the fund (for example, certain of the investment professionals serving on the investment committee or advising the fund), then investors in certain funds have the right to vote to terminate the

Investors in our carry funds and fund of funds vehicles make capital commitments to those funds that we are entitled to call from those investors at any time during prescribed periods. We depend on investors fulfilling their commitments when we call capital from them in order for those funds to consummate investments and otherwise pay their obligations (for example, management fees) when due. Any investor that did not fund a capital call would generally be subject to several possible penalties, including having a significant amount of its existing investment forfeited in that fund. However, the impact of the penalty is directly correlated to the amount of capital previously invested by the investor in the fund and if an investor has invested little or no capital, for instance early in the life of the fund, then the forfeiture penalty may not be as meaningful. Investors may also negotiate for lesser or reduced penalties at the outset of the fund, thereby inhibiting our ability to enforce the funding of a capital call. Third-partyOur use of subscription lines of credit to purchase an investment prior to calling capital from fund investors could increase the prevalence of defaulting limited partners. Should the value of an investment funded through a fund line-of-credit decline, especially early in a fund's life-cycle where minimal capital has been contributed by the fund's investors, a limited partner may decide not to fund its commitment. In addition, third-party investors in private equity, real estate assets and venture capital funds typically use distributions from prior investments to meet future capital calls. In cases where valuations of investors’ existing investments fall and the pace of distributions slows, investors may be unable to make new commitments to third-party managed investment funds such as those advised by us. If investors were to fail to satisfy a significant amount of capital calls for any particular fund or funds, the operation and performance of those funds could be materially and adversely affected.

As we have expanded and as we continue to expand the number and scope of our businesses, we increasingly confront potential conflicts of interest relating to our funds’ investment activities. For example, a decision to acquire material, non-public information about a company while pursuing an investment opportunity for a particular fund may give rise to a potential conflict of interest that results in our having to restrict the ability of other funds to take any action. Certain of our funds, managed accounts or investment vehicles may have overlapping investment objectives, including coinvestmentco-investment funds and funds that have different fee structures, and potential conflicts may arise with respect to our decisions regarding how to allocate investment opportunities among those funds, managed accounts or investors. Different private equity funds may invest in a single portfolio company, for example where the fund that made an initial investment no longer has capital available to invest. We may also cause different private equity funds to invest in a single portfolio company, for example where the fund that made an initial investment no longer has capital available to invest. We may also cause different funds that we manage to purchase different classes of securities in the same portfolio company. For example, one of our funds could acquire a debt security issued by the same company in which one of our buyout funds owns common equity securities. A direct conflict of interest could arise between the debt holders and the equity holders if such a portfolio company was to develop insolvency concerns, and that conflict would have to be carefully managed by us. It is also possible that in the event the portfolio company goes through a bankruptcy proceeding, the interests of the fund holding the debt securities may be subordinated, recharacterized or otherwise adversely affected by virtue of the involvement and actions of the fund holding the equity in the portfolio company. In such a case, the debt security could be converted into equity and the prospects of repayment greatly diminished. In addition, conflictsConflicts of interest may also exist in the valuation of our investments and regarding decisions about the allocation of specific investment opportunities among us and our funds and the allocation of fees and costs among us, our funds and their portfolio companies and conflicts could also arise in respect of the ultimate disposition of such investments. Due to recent changes in the tax treatment of carried interest under the TCJA, conflicts of interest may arise with investors in certain of our funds in connection with the general partner’s decisions with respect to the sequence and timing of disposals of investments in such funds. To the extent we fail to appropriately deal with any such conflicts, it could negatively impact our reputation and ability to raise additional funds and the willingness of counterparties to do business with us or result in regulatory liability or potential litigation against us.

When managing our exposure to market risks, we may (on our own behalf or on behalf of our funds) from time to time use forward contracts, options, swaps, caps, collars and floors or pursue other strategies or use other forms of derivative instruments to limit our exposure to changes in the relative values of investments that may result from market developments, including changes in prevailing interest rates, currency exchange rates and commodity prices. The scope of risk management activities undertaken by us varies based on the level and volatility of interest rates, prevailing foreign currency exchange rates, the types of investments that are made and other changing market conditions. The use of hedging transactions and other derivative instruments to reduce the effects of a decline in the value of a position does not eliminate the possibility of fluctuations in the value of the position or prevent losses if the value of the position declines. Such transactions may also limit the opportunity for gain if the value of a position increases. Moreover, it may not be possible to limit the exposure to a market development that is so generally anticipated that a hedging or other derivative transaction cannot be entered into at an acceptable price. The success of any hedging or other derivative transaction generally will depend on our ability to correctly predict market changes, the degree of correlation between price movements of a derivative instrument and the position being hedged, the creditworthiness of the counterparty and other factors. As a result, while we may enter into such a transaction in order to reduce our exposure to market risks, the transaction may result in poorer overall firm or investment performance than if it had not been executed. Such transactions may also limit the opportunity for gain if the value of a hedged position increases.

While such hedging arrangements may reduce certain risks, such arrangements themselves may entail certain other risks. These arrangements may require the posting of cash collateral at a time when a fund has insufficient cash or illiquid assets such that the posting of the cash is either impossible or requires the sale of assets at prices that do not reflect their underlying value. Moreover, these hedging arrangements may generate significant transaction costs, including potential tax costs, thatwhich may reduce the returns generated by the firm or a fund. See “Rapidly“—Rapidly changing regulations regarding derivatives and commodity interest transactions could adversely impact various aspects of our business."

The governing agreements of our investment funds contain only limited investment restrictions and only limited requirements as to diversification of fund investments, either by geographic region or asset type. For example, we advise funds that invest predominantly in the United States, Europe, Asia, South America, Ireland, Peru, Japan, or Sub-Saharan Africa or MENA;Africa; and we advise funds that invest in a single industry sector, such as financial services and power. During periods of difficult market conditions or slowdowns in these sectors or geographic regions, decreased revenue, difficulty in obtaining access to financing

Our energy teams focus on investments in businesses involved in oil and gas exploration and development, which can be a speculative business involving a high degree of risk, including: