| Document and Entity Information | Dec. 01, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Document Period End Date | Dec. 01, 2022 |
| Entity Registrant Name | US BANCORP \DE\ |
| Entity File Number | 1-6880 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 41-0255900 |
| Entity Address, Address Line One | 800 Nicollet Mall |
| Entity Address, City or Town | Minneapolis |
| Entity Address, State or Province | MN |
| Entity Address, Postal Zip Code | 55402 |
| City Area Code | 651 |
| Local Phone Number | 466-3000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Description | On December 1, 2022, U.S. Bancorp (the “Company”) filed a Current Report on Form 8-K (the “Original 8-K”) to report, among other things, its acquisition of MUFG Union Bank N.A.’s (“MUFG Union Bank”) core regional banking franchise pursuant to a Share Purchase Agreement, dated as of September 21, 2021 (as amended by Amendment No. 1 to the Share Purchase Agreement, dated as of May 10, 2022), by and among the Company, Mitsubishi UFJ Financial Group, Inc. (“MUFG”) and MUFG Americas Holdings Corporation (“Seller”), which provided for the Company’s purchase from the Seller (the “Share Purchase”) of all the issued and outstanding shares of common stock of MUFG Union Bank. This Current Report on Form 8-K/A (this “Amended 8-K”) amends and supplements the Original 8-K filed by the Company, and is being filed to provide the historical financial statements and the pro forma financial information pursuant to Items 9.01(a) and 9.01(b) of Form 8-K, respectively. In accordance with the requirements of Items 9.01(a)(3) and 9.01(b)(2) of Form 8-K, this Amended 8-K is being filed within 71 calendar days after the date that the Original 8-K was required to be filed with respect to the above referenced transaction. |
| Entity Central Index Key | 0000036104 |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $.01 par value per share |
| Trading Symbol | USB |
| Security Exchange Name | NYSE |
| Series A Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares (each representing 1/100th interest in a share of Series A Non-Cumulative Perpetual Preferred Stock, par value $1.00) |
| Trading Symbol | USB PrA |
| Security Exchange Name | NYSE |
| Series B Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares (each representing 1/1,000th interest in a share of Series B Non-Cumulative Perpetual Preferred Stock, par value $1.00) |
| Trading Symbol | USB PrH |
| Security Exchange Name | NYSE |
| Series K Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares (each representing 1/1,000th interest in a share of Series K Non-Cumulative Perpetual Preferred Stock, par value $1.00) |
| Trading Symbol | USB PrP |
| Security Exchange Name | NYSE |
| 0.850% Medium-Term Notes, Series X (Senior), due June 7, 2024 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 0.850% Medium-Term Notes, Series X (Senior), due June 7, 2024 |
| Trading Symbol | USB/24B |
| Security Exchange Name | NYSE |
| Series L Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares (each representing 1/1,000th interest in a share of Series L Non-Cumulative Perpetual Preferred Stock, par value $1.00) |
| Trading Symbol | USB PrQ |
| Security Exchange Name | NYSE |
| Series M Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares (each representing 1/1,000th interest in a share of Series M Non-Cumulative Perpetual Preferred Stock, par value $1.00) |
| Trading Symbol | USB PrR |
| Security Exchange Name | NYSE |
| Series O Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares (each representing 1/1,000th interest in a share of Series O Non-Cumulative Perpetual Preferred Stock, par value $1.00) |
| Trading Symbol | USB PrS |
| Security Exchange Name | NYSE |
