Debt (Schedule of Short-Term and Long-Term Debt) (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Apr. 30, 2020	Feb. 01, 2020	Nov. 02, 2019
Debt Instrument [Line Items]
Total long-term debt	$ 2,512,037		$ 312,891	$ 312,778
6.530% Series B Senior Notes due 2021 | 6.530% Series B Senior Notes due 2021
Debt Instrument [Line Items]
Stated interest rate (percent)	6.53%
Total long-term debt	$ 64,883		64,963	64,958
Senior Notes | 3.375% Senior Notes due 2024
Debt Instrument [Line Items]
Stated interest rate (percent)	3.375%
Total long-term debt	$ 248,256		247,928	247,820
Senior Notes | 4.600% Senior Notes due 2025
Debt Instrument [Line Items]
Stated interest rate (percent)	4.60%	4.60%
Total long-term debt	$ 694,310		0	0
Senior Notes | 0.875% Senior Notes due 2026
Debt Instrument [Line Items]
Stated interest rate (percent)	0.875%
Total long-term debt	$ 493,297		0	0
Senior Notes | 4.700% Senior Notes due 2027
Debt Instrument [Line Items]
Stated interest rate (percent)	4.70%	4.70%
Total long-term debt	$ 238,944		0	0
Senior Notes | 4.800% Senior Notes due 2030
Debt Instrument [Line Items]
Stated interest rate (percent)	4.80%	4.80%
Total long-term debt	$ 132,220		0	0
Senior Notes | 1.875% Senior Notes due 2031
Debt Instrument [Line Items]
Stated interest rate (percent)	1.875%
Total long-term debt	$ 493,998		0	0
Senior Notes | 5.450% Senior Notes due 2050
Debt Instrument [Line Items]
Stated interest rate (percent)	5.45%	5.45%
Total long-term debt	$ 146,129		$ 0	$ 0