Revenue - Net Revenue by Product Group (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2023	Jan. 29, 2022	Jan. 30, 2021
Disaggregation of Revenue [Line Items]
Net revenue	$ 5,919.6	$ 4,462.4	$ 2,968.9
Product Concentration Risk | Net revenue
Disaggregation of Revenue [Line Items]
% of Total	100.00%	100.00%	100.00%
Data center
Disaggregation of Revenue [Line Items]
Net revenue	$ 2,408.8	$ 1,784.7	$ 1,040.8
Data center | Product Concentration Risk | Net revenue
Disaggregation of Revenue [Line Items]
% of Total	41.00%	40.00%	35.00%
Enterprise networking
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,369.2	$ 907.7	$ 636.0
Enterprise networking | Product Concentration Risk | Net revenue
Disaggregation of Revenue [Line Items]
% of Total	23.00%	20.00%	22.00%
Carrier infrastructure
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,084.0	$ 820.4	$ 599.4
Carrier infrastructure | Product Concentration Risk | Net revenue
Disaggregation of Revenue [Line Items]
% of Total	18.00%	18.00%	20.00%
Consumer
Disaggregation of Revenue [Line Items]
Net revenue	$ 701.1	$ 700.0	$ 574.7
Consumer | Product Concentration Risk | Net revenue
Disaggregation of Revenue [Line Items]
% of Total	12.00%	16.00%	19.00%
Automotive/industrial
Disaggregation of Revenue [Line Items]
Net revenue	$ 356.5	$ 249.6	$ 118.0
Automotive/industrial | Product Concentration Risk | Net revenue
Disaggregation of Revenue [Line Items]
% of Total	6.00%	6.00%	4.00%