Accumulated Other Comprehensive Loss - Changes in AOCI (Details) - USD ($)	3 Months Ended
	Jul. 30, 2021	Jul. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 51,602,000,000	$ 50,872,000,000
Other comprehensive income (loss)	274,000,000	(217,000,000)
Ending balance	51,664,000,000	50,443,000,000
Total Accumulated Other Comprehensive (Loss) Income
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(3,485,000,000)	(3,560,000,000)
Other comprehensive income (loss) before reclassifications	230,000,000	(196,000,000)
Reclassifications	46,000,000	(26,000,000)
Other comprehensive income (loss)	276,000,000	(222,000,000)
Ending balance	(3,209,000,000)	(3,782,000,000)
Unrealized Gain (Loss) on Investment Securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	92,000,000	0
Other comprehensive income (loss) before reclassifications	14,000,000	125,000,000
Reclassifications	(2,000,000)	0
Other comprehensive income (loss)	12,000,000	125,000,000
Ending balance	104,000,000	125,000,000
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	2,000,000	30,000,000
Reclassifications, tax expense (benefit)	0	0
Cumulative Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(519,000,000)	(2,210,000,000)
Other comprehensive income (loss) before reclassifications	(353,000,000)	1,112,000,000
Reclassifications	0	0
Other comprehensive income (loss)	(353,000,000)	1,112,000,000
Ending balance	(872,000,000)	(1,098,000,000)
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	0	4,000,000
Net Investment Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,458,000,000)	236,000,000
Other comprehensive income (loss) before reclassifications	424,000,000	(1,112,000,000)
Reclassifications	0	0
Other comprehensive income (loss)	424,000,000	(1,112,000,000)
Ending balance	(1,034,000,000)	(876,000,000)
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	0	0
Net Change in Retirement Obligations
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,347,000,000)	(1,852,000,000)
Other comprehensive income (loss) before reclassifications	1,000,000	(12,000,000)
Reclassifications	18,000,000	15,000,000
Other comprehensive income (loss)	19,000,000	3,000,000
Ending balance	(1,328,000,000)	(1,849,000,000)
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	1,000,000	(5,000,000)
Reclassifications, tax expense (benefit)	2,000,000	4,000,000
Unrealized Gain (Loss) on Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(253,000,000)	266,000,000
Other comprehensive income (loss) before reclassifications	144,000,000	(309,000,000)
Reclassifications	30,000,000	(41,000,000)
Other comprehensive income (loss)	174,000,000	(350,000,000)
Ending balance	(79,000,000)	(84,000,000)
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	16,000,000	(80,000,000)
Reclassifications, tax expense (benefit)	$ (1,000,000)	$ 11,000,000