Document and Entity Information
Document and Entity Information | Jul. 23, 2020 | Jul. 22, 2020 |
Cover [Abstract] | ||
Document Type | 8-K | |
Document Period End Date | Jul. 22, 2020 | |
Entity Registrant Name | WASHINGTON FEDERAL INC | |
Entity Central Index Key | 0000936528 | |
Amendment Flag | false | |
Entity Incorporation, State or Country Code | WA | |
Entity File Number | 001-34654 | |
Entity Tax Identification Number | 91-1661606 | |
Entity Address, Address Line One | 425 Pike Street | |
Entity Address, City or Town | Seattle | |
Entity Address, State or Province | WA | |
Entity Address, Postal Zip Code | 98101 | |
City Area Code | 206 | |
Local Phone Number | 624-7930 | |
Written Communications | false | |
Soliciting Material | false | |
Pre-commencement Tender Offer | false | |
Pre-commencement Issuer Tender Offer | false | |
Entity Emerging Growth Company | false |