Supplemental Financial Information - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Oct. 30, 2021	Oct. 30, 2021	Oct. 31, 2020	Oct. 16, 2018	Nov. 17, 2016	Nov. 16, 2016
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Authorized repurchase amount					$ 1,000,000,000	$ 3,250,000,000
Stock repurchase program, additional authorized amount				$ 700,000,000
Remaining available for future share repurchases (in shares)	$ 564,500,000	$ 564,500,000
Number of common shares repurchased and retired during period (in shares)	0	0	1,300,000
Value of common shares repurchased and retired during period			$ 25,200,000
Inphi Corporation And Innovium Inc
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Noncash consideration		$ 7,200,000,000
Innovium
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Inventories acquired		$ 41,900,000