Restructuring - Narrative (Details) - Enterprise Excellence - USD ($) $ in Millions	3 Months Ended
	Jul. 26, 2019	Jul. 27, 2018
Restructuring Cost and Reserve [Line Items]
Charges	$ 136	$ 120
Accrual adjustments	12
Cost of products sold
Restructuring Cost and Reserve [Line Items]
Charges	35	15
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Charges	42	$ 36
Minimum | Pre-tax exit and disposal costs and other
Restructuring Cost and Reserve [Line Items]
Expected cost	1,600
Maximum | Pre-tax exit and disposal costs and other
Restructuring Cost and Reserve [Line Items]
Expected cost	$ 1,800