Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 14,343	$ 9,224	$ 12,767	$ 8,055
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	187	13	416	(208)
Reclassifications to net income of previously deferred (gains) losses, net of tax	25	(41)	109	(165)
Total other comprehensive income (loss), net of tax	212	(28)	525	(373)
Ending balance	14,924	10,640	14,924	10,640
Other comprehensive income, before reclassification, tax benefit (expense)	(29)	(4)	(70)	1
Reclassification from AOCI, current period, tax expense (benefit)	2	4	(5)	7
Gains (losses) on foreign currency translation adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(126)	(176)	2	(494)
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	(155)	79	(283)	397
Reclassifications to net income of previously deferred (gains) losses, net of tax	0	(1)	0	(1)
Total other comprehensive income (loss), net of tax	(155)	78	(283)	396
Ending balance	(281)	(98)	(281)	(98)
Other comprehensive income, before reclassification, tax benefit (expense)	0	0	0	0
Reclassification from AOCI, current period, tax expense (benefit)	0	0	0	0
CASH FLOW HEDGES
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	3	(268)	(435)	390
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	336	(64)	685	(590)
Reclassifications to net income of previously deferred (gains) losses, net of tax	30	(39)	119	(171)
Total other comprehensive income (loss), net of tax	366	(103)	804	(761)
Ending balance	369	(371)	369	(371)
Other comprehensive income, before reclassification, tax benefit (expense)	(27)	(4)	(66)	0
Reclassification from AOCI, current period, tax expense (benefit)	(1)	4	(9)	7
Net Investment Hedges
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	115	115	115	115
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	0	0	0	0
Reclassifications to net income of previously deferred (gains) losses, net of tax	0	0	0	0
Total other comprehensive income (loss), net of tax	0	0	0	0
Ending balance	115	115	115	115
Other comprehensive income, before reclassification, tax benefit (expense)	0	0	0	0
Reclassification from AOCI, current period, tax expense (benefit)	0	0	0	0
OTHER
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(59)	(72)	(62)	(67)
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	6	(2)	14	(15)
Reclassifications to net income of previously deferred (gains) losses, net of tax	(5)	(1)	(10)	7
Total other comprehensive income (loss), net of tax	1	(3)	4	(8)
Ending balance	(58)	(75)	(58)	(75)
Other comprehensive income, before reclassification, tax benefit (expense)	(2)	0	(4)	1
Reclassification from AOCI, current period, tax expense (benefit)	3	0	4	0
TOTAL
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(67)	(401)	(380)	(56)
Other comprehensive income (loss):
Ending balance	$ 145	$ (429)	$ 145	$ (429)