CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
May 31, 2019	May 31, 2018	May 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 11,083	$ 3,587	$ 9,452
Other comprehensive income (loss), net of tax:
Net foreign currency translation (losses) gains	(149)	(291)	85
Net unrealized (losses) gains on defined benefit plans	(70)	34	(102)
Net unrealized gains (losses) on marketable securities	332	(609)	(9)
Net unrealized (losses) gains on cash flow hedges	(52)	37	25
Total other comprehensive income (loss), net	61	(829)	(1)
Comprehensive income	$ 11,144	$ 2,758	$ 9,451

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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