Document and Entity Information
Document and Entity Information | Feb. 24, 2020 |
Cover [Abstract] | |
Entity Registrant Name | SMITH A O CORP |
Amendment Flag | false |
Entity Central Index Key | 0000091142 |
Document Type | 8-K |
Document Period End Date | Feb. 24, 2020 |
Entity Incorporation State Country Code | DE |
Entity File Number | 1-475 |
Entity Tax Identification Number | 39-0619790 |
Entity Address, Address Line One | 11270 West Park Place |
Entity Address, City or Town | Milwaukee |
Entity Address, State or Province | WI |
Entity Address, Postal Zip Code | 53224 |
City Area Code | (414) |
Local Phone Number | 359-4000 |
Written Communications | false |
Soliciting Material | false |
Pre Commencement Tender Offer | false |
Pre Commencement Issuer Tender Offer | false |
Security 12b Title | Common Stock (par value $1.00 per share) |
Trading Symbol | AOS |
Security Exchange Name | NYSE |
Entity Emerging Growth Company | false |