Business Segments (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment			3
Number of reportable segments | segment			3
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 4,080	$ 4,052	$ 8,202	$ 8,067
Noninterest income	2,924	2,815	5,760	5,515
Total net revenue	7,004	6,867	13,962	13,582
Compensation and employee benefits	2,600	2,619	5,237	5,310
Other intangibles	124	142	247	288
Net shared services	0	0	0	0
Other direct expenses	1,457	1,453	2,929	3,075
Total noninterest expense	4,181	4,214	8,413	8,673
Income (loss) before provision and income taxes	2,823	2,653	5,549	4,909
Provision for credit losses	501	568	1,038	1,121
Income (loss) before income taxes	2,322	2,085	4,511	3,788
Income taxes and taxable-equivalent adjustment	501	474	974	851
Net income	1,821	1,611	3,537	2,937
Net (income) loss attributable to noncontrolling interests	(6)	(8)	(13)	(15)
Net income attributable to U.S. Bancorp	1,815	1,603	3,524	2,922
Average Balance Sheet
Loans	378,529	374,685	378,777	372,878
Other earning assets	234,813	234,207	233,017	229,635
Goodwill	12,577	12,477	12,560	12,480
Other intangible assets	5,360	6,031	5,424	6,048
Assets	673,341	665,504	671,378	659,707
Noninterest-bearing deposits	79,117	83,418	79,405	84,102
Interest-bearing deposits	423,773	430,491	425,297	424,383
Total deposits	502,890	513,909	504,702	508,485
Total U.S. Bancorp shareholders’ equity	60,899	56,029	60,258	55,849
Taxable-equivalent adjustment to net interest income	29	29	59	59
Lease revenue	199	195	396	382
Treasury and Corporate Support
Condensed Income Statement
Net interest income (taxable-equivalent basis)	(294)	(461)	(462)	(942)
Noninterest income	203	178	430	364
Total net revenue	(91)	(283)	(32)	(578)
Compensation and employee benefits	1,317	1,303	2,693	2,669
Other intangibles	(1)	0	(1)	0
Net shared services	(1,779)	(1,785)	(3,541)	(3,549)
Other direct expenses	665	685	1,366	1,535
Total noninterest expense	202	203	517	655
Income (loss) before provision and income taxes	(293)	(486)	(549)	(1,233)
Provision for credit losses	(105)	50	43	49
Income (loss) before income taxes	(188)	(536)	(592)	(1,282)
Income taxes and taxable-equivalent adjustment	(127)	(182)	(302)	(417)
Net income	(61)	(354)	(290)	(865)
Net (income) loss attributable to noncontrolling interests	(6)	(8)	(13)	(15)
Net income attributable to U.S. Bancorp	(67)	(362)	(303)	(880)
Average Balance Sheet
Loans	5,562	5,115	5,530	5,145
Other earning assets	217,155	222,224	217,281	218,258
Goodwill	0	0	0	0
Other intangible assets	8	9	8	10
Assets	248,372	247,390	247,892	243,014
Noninterest-bearing deposits	2,573	2,505	2,649	2,271
Interest-bearing deposits	12,681	11,150	12,134	11,107
Total deposits	15,254	13,655	14,783	13,378
Total U.S. Bancorp shareholders’ equity	15,285	10,043	14,709	9,567
Wealth, Corporate, Commercial and Institutional Banking | Operating Segments
Condensed Income Statement
Net interest income (taxable-equivalent basis)	1,801	1,928	3,581	3,851
Noninterest income	1,199	1,130	2,366	2,242
Total net revenue	3,000	3,058	5,947	6,093
Compensation and employee benefits	535	548	1,057	1,098
Other intangibles	46	52	92	104
Net shared services	538	555	1,067	1,090
Other direct expenses	234	226	474	466
Total noninterest expense	1,353	1,381	2,690	2,758
Income (loss) before provision and income taxes	1,647	1,677	3,257	3,335
Provision for credit losses	183	100	193	241
Income (loss) before income taxes	1,464	1,577	3,064	3,094
Income taxes and taxable-equivalent adjustment	366	394	766	773
Net income	1,098	1,183	2,298	2,321
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to U.S. Bancorp	1,098	1,183	2,298	2,321
Average Balance Sheet
Loans	181,077	173,807	179,549	172,475
Other earning assets	12,778	9,590	12,370	9,164
Goodwill	4,826	4,824	4,825	4,824
Other intangible assets	817	1,007	840	1,032
Assets	211,954	203,313	210,314	201,291
Noninterest-bearing deposits	54,422	57,362	54,794	58,001
Interest-bearing deposits	210,094	218,233	213,136	213,933
Total deposits	264,516	275,595	267,930	271,934
Total U.S. Bancorp shareholders’ equity	21,817	21,487	21,684	21,624
Consumer and Business Banking | Operating Segments
Condensed Income Statement
Net interest income (taxable-equivalent basis)	1,843	1,912	3,611	3,783
Noninterest income	406	414	813	838
Total net revenue	2,249	2,326	4,424	4,621
Compensation and employee benefits	528	551	1,051	1,107
Other intangibles	59	67	118	134
Net shared services	704	701	1,388	1,401
Other direct expenses	307	319	610	617
Total noninterest expense	1,598	1,638	3,167	3,259
Income (loss) before provision and income taxes	651	688	1,257	1,362
Provision for credit losses	39	30	101	84
Income (loss) before income taxes	612	658	1,156	1,278
Income taxes and taxable-equivalent adjustment	153	165	289	320
Net income	459	493	867	958
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to U.S. Bancorp	459	493	867	958
Average Balance Sheet
Loans	149,661	154,931	151,776	154,940
Other earning assets	4,875	2,278	3,335	2,079
Goodwill	4,326	4,326	4,326	4,326
Other intangible assets	4,277	4,734	4,322	4,715
Assets	165,175	168,705	165,834	168,946
Noninterest-bearing deposits	19,610	20,845	19,365	21,081
Interest-bearing deposits	200,903	201,012	199,932	199,247
Total deposits	220,513	221,857	219,297	220,328
Total U.S. Bancorp shareholders’ equity	13,562	14,558	13,633	14,705
Payment Services
Average Balance Sheet
Rewards and rebate costs and certain partner payments	789	776	1,500	1,500
Revenue generated from certain contracts with customers	2,400	2,300	4,700	4,500
Payment Services | Operating Segments
Condensed Income Statement
Net interest income (taxable-equivalent basis)	730	673	1,472	1,375
Noninterest income	1,116	1,093	2,151	2,071
Total net revenue	1,846	1,766	3,623	3,446
Compensation and employee benefits	220	217	436	436
Other intangibles	20	23	38	50
Net shared services	537	529	1,086	1,058
Other direct expenses	251	223	479	457
Total noninterest expense	1,028	992	2,039	2,001
Income (loss) before provision and income taxes	818	774	1,584	1,445
Provision for credit losses	384	388	701	747
Income (loss) before income taxes	434	386	883	698
Income taxes and taxable-equivalent adjustment	109	97	221	175
Net income	325	289	662	523
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to U.S. Bancorp	325	289	662	523
Average Balance Sheet
Loans	42,229	40,832	41,922	40,318
Other earning assets	5	115	31	134
Goodwill	3,425	3,327	3,409	3,330
Other intangible assets	258	281	254	291
Assets	47,840	46,096	47,338	46,456
Noninterest-bearing deposits	2,512	2,706	2,597	2,749
Interest-bearing deposits	95	96	95	96
Total deposits	2,607	2,802	2,692	2,845
Total U.S. Bancorp shareholders’ equity	$ 10,235	$ 9,941	$ 10,232	$ 9,953