CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Common Stock and Additional Paid in Capital	(Accumulated deficit) Retained Earnings	Other Equity, Net
Balance, beginning of period at May. 31, 2017		$ 27,065	$ 28,535	$ (470)
Cumulative-effect of accounting change			0
Other comprehensive income (loss), net	$ (471)			(471)
Common stock issued		2,116
Stock-based compensation		1,211
Repurchase of common stock	(6,500)	(884)	(5,617)
Cash dividends declared			(2,362)
Net income (loss)			311
Other, net		(460)	0	97
Balance, end of period at Feb. 28, 2018	$ 49,071	29,048	20,867	(844)
Cash dividends declared per common share	$ 0.57
Balance, beginning of period at Nov. 30, 2017		28,474	29,149	(513)
Cumulative-effect of accounting change			0
Other comprehensive income (loss), net	$ (382)			(382)
Common stock issued		763
Stock-based compensation		389
Repurchase of common stock		(548)	(3,452)
Cash dividends declared			(783)
Net income (loss)			(4,047)
Other, net		(30)	0	51
Balance, end of period at Feb. 28, 2018	$ 49,071	29,048	20,867	(844)
Cash dividends declared per common share	$ 0.19
Balance, beginning of period at May. 31, 2018	$ 46,873	28,950	19,111	(1,188)
Cumulative-effect of accounting change			(110)
Other comprehensive income (loss), net	(45)			(45)
Common stock issued		1,476
Stock-based compensation		1,259
Repurchase of common stock	(30,000)	(4,496)	(25,505)
Cash dividends declared			(2,126)
Net income (loss)			7,343
Other, net		(457)	3	23
Balance, end of period at Feb. 28, 2019	$ 24,238	26,732	(1,284)	(1,210)
Cash dividends declared per common share	$ 0.57
Balance, beginning of period at Nov. 30, 2018		27,430	5,107	(1,482)
Cumulative-effect of accounting change			0
Other comprehensive income (loss), net	$ 231			231
Common stock issued		450
Stock-based compensation		427
Repurchase of common stock		(1,533)	(8,466)
Cash dividends declared			(670)
Net income (loss)			2,745
Other, net		(42)	0	41
Balance, end of period at Feb. 28, 2019	$ 24,238	$ 26,732	$ (1,284)	$ (1,210)
Cash dividends declared per common share	$ 0.19