Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 1,682	$ 1,486
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on investment securities available-for-sale	(776)	127
Changes in unrealized gains and losses on derivative hedges	86	7
Foreign currency translation	13	10
Changes in unrealized gains and losses on retirement plans	(3)
Reclassification to earnings of realized gains and losses	29	11
Income taxes related to other comprehensive income (loss)	162	(59)
Total other comprehensive income (loss)	(489)	96
Comprehensive income	1,193	1,582
Comprehensive (income) loss attributable to noncontrolling interests	(7)	(13)
Comprehensive income attributable to U.S. Bancorp	$ 1,186	$ 1,569

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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