Business Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 4,166	$ 4,268	$ 12,233	$ 13,385
Noninterest income	2,698	2,764	8,213	7,997
Total net revenue	6,864	7,032	20,446	21,382
Noninterest expense	4,204	4,530	12,877	13,654
Income (loss) before provision and income taxes	2,660	2,502	7,569	7,728
Provision for credit losses	557	515	1,678	1,763
Income (loss) before income taxes	2,103	1,987	5,891	5,965
Income taxes and taxable-equivalent adjustment	381	463	1,232	1,368
Net income	1,722	1,524	4,659	4,597
Net (income) loss attributable to noncontrolling interests	(8)	(1)	(23)	(15)
Net income attributable to U.S. Bancorp	1,714	1,523	4,636	4,582
Average Balance Sheet
Loans	374,070	376,877	373,278	384,112
Other earning assets	233,110	228,368	230,802	224,779
Goodwill	12,521	12,486	12,494	12,474
Other intangible assets	5,635	6,425	5,909	6,730
Assets	664,640	663,999	661,363	667,481
Noninterest-bearing deposits	80,939	97,524	83,040	113,556
Interest-bearing deposits	427,818	414,767	425,536	393,077
Total deposits	508,757	512,291	508,576	506,633
Total U.S. Bancorp shareholders’ equity	58,283	53,817	56,666	53,440
Lease revenue	195	185	577	554
Wealth, Corporate, Commercial and Institutional Banking
Condensed Income Statement
Net interest income (taxable-equivalent basis)	1,896	2,023	5,711	5,884
Noninterest income	1,145	1,030	3,387	3,120
Total net revenue	3,041	3,053	9,098	9,004
Noninterest expense	1,364	1,340	4,135	4,073
Income (loss) before provision and income taxes	1,677	1,713	4,963	4,931
Provision for credit losses	94	136	335	271
Income (loss) before income taxes	1,583	1,577	4,628	4,660
Income taxes and taxable-equivalent adjustment	396	394	1,158	1,165
Net income	1,187	1,183	3,470	3,495
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to U.S. Bancorp	1,187	1,183	3,470	3,495
Average Balance Sheet
Loans	171,833	175,700	172,249	177,161
Other earning assets	10,740	6,458	9,693	6,386
Goodwill	4,825	4,638	4,825	4,634
Other intangible assets	955	921	1,007	972
Assets	200,199	203,910	200,912	203,442
Noninterest-bearing deposits	54,263	66,055	56,650	73,789
Interest-bearing deposits	215,604	210,041	213,572	201,805
Total deposits	269,867	276,096	270,222	275,594
Total U.S. Bancorp shareholders’ equity	21,277	22,839	21,506	22,249
Consumer and Business Banking
Condensed Income Statement
Net interest income (taxable-equivalent basis)	1,937	2,048	5,737	6,730
Noninterest income	401	434	1,239	1,265
Total net revenue	2,338	2,482	6,976	7,995
Noninterest expense	1,685	1,721	4,977	5,246
Income (loss) before provision and income taxes	653	761	1,999	2,749
Provision for credit losses	18	7	102	30
Income (loss) before income taxes	635	754	1,897	2,719
Income taxes and taxable-equivalent adjustment	159	189	475	680
Net income	476	565	1,422	2,039
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to U.S. Bancorp	476	565	1,422	2,039
Average Balance Sheet
Loans	155,304	157,458	155,073	164,050
Other earning assets	2,738	2,688	2,300	2,462
Goodwill	4,326	4,515	4,326	4,514
Other intangible assets	4,405	5,154	4,611	5,378
Assets	168,937	174,883	168,954	181,735
Noninterest-bearing deposits	20,781	25,561	21,068	33,599
Interest-bearing deposits	200,897	192,725	200,719	182,267
Total deposits	221,678	218,286	221,787	215,866
Total U.S. Bancorp shareholders’ equity	14,247	15,770	14,552	16,246
Payment Services
Condensed Income Statement
Net interest income (taxable-equivalent basis)	727	663	2,102	1,933
Noninterest income	1,073	1,039	3,146	3,026
Total net revenue	1,800	1,702	5,248	4,959
Noninterest expense	1,026	1,006	3,040	2,871
Income (loss) before provision and income taxes	774	696	2,208	2,088
Provision for credit losses	404	399	1,151	933
Income (loss) before income taxes	370	297	1,057	1,155
Income taxes and taxable-equivalent adjustment	93	74	265	288
Net income	277	223	792	867
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to U.S. Bancorp	277	223	792	867
Average Balance Sheet
Loans	41,653	38,954	40,766	37,942
Other earning assets	8	5	92	126
Goodwill	3,370	3,333	3,343	3,326
Other intangible assets	266	340	282	361
Assets	47,199	44,774	46,707	43,926
Noninterest-bearing deposits	2,653	2,796	2,716	3,052
Interest-bearing deposits	95	101	96	104
Total deposits	2,748	2,897	2,812	3,156
Total U.S. Bancorp shareholders’ equity	9,959	9,442	9,955	9,181
Rewards and rebate costs and certain partner payments	796	762	2,200	2,200
Revenue generated from certain contracts with customers	2,300	2,200	6,800	6,600
Treasury and Corporate Support
Condensed Income Statement
Net interest income (taxable-equivalent basis)	(394)	(466)	(1,317)	(1,162)
Noninterest income	79	261	441	586
Total net revenue	(315)	(205)	(876)	(576)
Noninterest expense	129	463	725	1,464
Income (loss) before provision and income taxes	(444)	(668)	(1,601)	(2,040)
Provision for credit losses	41	(27)	90	529
Income (loss) before income taxes	(485)	(641)	(1,691)	(2,569)
Income taxes and taxable-equivalent adjustment	(267)	(194)	(666)	(765)
Net income	(218)	(447)	(1,025)	(1,804)
Net (income) loss attributable to noncontrolling interests	(8)	(1)	(23)	(15)
Net income attributable to U.S. Bancorp	(226)	(448)	(1,048)	(1,819)
Average Balance Sheet
Loans	5,280	4,765	5,190	4,959
Other earning assets	219,624	219,217	218,717	215,805
Goodwill	0	0	0	0
Other intangible assets	9	10	9	19
Assets	248,305	240,432	244,790	238,378
Noninterest-bearing deposits	3,242	3,112	2,606	3,116
Interest-bearing deposits	11,222	11,900	11,149	8,901
Total deposits	14,464	15,012	13,755	12,017
Total U.S. Bancorp shareholders’ equity	$ 12,800	$ 5,766	$ 10,653	$ 5,764