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Restructuring - Activity Related to Restructuring Programs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 30, 2020	Oct. 25, 2019	Oct. 30, 2020	Oct. 25, 2019
Enterprise Excellence
Restructuring Reserve [Roll Forward]
Beginning balance			$ 112
Charges	$ 90	$ 95	169	$ 231
Cash payments			(191)
Accrual adjustments	(3)	$ (1)	(5)	$ (13)
Ending balance	85		85
Enterprise Excellence \| Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Beginning balance			89
Charges			17
Cash payments			(42)
Accrual adjustments			(3)
Ending balance	61		61
Enterprise Excellence \| Associated Costs
Restructuring Reserve [Roll Forward]
Beginning balance			19
Charges			150
Cash payments			(146)
Accrual adjustments			0
Ending balance	23		23
Enterprise Excellence \| Other Costs
Restructuring Reserve [Roll Forward]
Beginning balance			4
Charges			2
Cash payments			(3)
Accrual adjustments			(2)
Ending balance	1		1
Simplification
Restructuring Reserve [Roll Forward]
Beginning balance			0
Charges			56
Cash payments			(12)
Accrual adjustments	(8)		(8)
Ending balance	36		36
Simplification \| Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Beginning balance			0
Charges			53
Cash payments			(9)
Accrual adjustments			(8)
Ending balance	36		36
Simplification \| Associated Costs
Restructuring Reserve [Roll Forward]
Beginning balance			0
Charges			3
Cash payments			(3)
Accrual adjustments			0
Ending balance	$ 0		$ 0