Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Detail) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 12,767	$ 8,055
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	229	(221)
Reclassifications to net income of previously deferred (gains) losses, net of tax	84	(124)
Total other comprehensive income (loss), net of tax	313	(345)
Ending balance	14,343	9,224
Other comprehensive income, before reclassification, tax benefit (expense)	(41)	5
Reclassification from AOCI, current period, tax expense (benefit)	(7)	3
Gains (losses) on foreign currency translation adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	2	(494)
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	(128)	318
Reclassifications to net income of previously deferred (gains) losses, net of tax	0	0
Total other comprehensive income (loss), net of tax	(128)	318
Ending balance	(126)	(176)
Other comprehensive income, before reclassification, tax benefit (expense)	0	0
Reclassification from AOCI, current period, tax expense (benefit)	0	0
CASH FLOW HEDGES
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(435)	390
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	349	(526)
Reclassifications to net income of previously deferred (gains) losses, net of tax	89	(132)
Total other comprehensive income (loss), net of tax	438	(658)
Ending balance	3	(268)
Other comprehensive income, before reclassification, tax benefit (expense)	(39)	4
Reclassification from AOCI, current period, tax expense (benefit)	(8)	3
Net Investment Hedges
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	115	115
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	0	0
Reclassifications to net income of previously deferred (gains) losses, net of tax	0	0
Total other comprehensive income (loss), net of tax	0	0
Ending balance	115	115
Other comprehensive income, before reclassification, tax benefit (expense)	0	0
Reclassification from AOCI, current period, tax expense (benefit)	0	0
OTHER
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(62)	(67)
Other comprehensive income (loss):
Other comprehensive gains (losses) before reclassifications, net of tax	8	(13)
Reclassifications to net income of previously deferred (gains) losses, net of tax	(5)	8
Total other comprehensive income (loss), net of tax	3	(5)
Ending balance	(59)	(72)
Other comprehensive income, before reclassification, tax benefit (expense)	(2)	1
Reclassification from AOCI, current period, tax expense (benefit)	1	0
TOTAL
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(380)	(56)
Other comprehensive income (loss):
Ending balance	$ (67)	$ (401)