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Debt - Summary of Borrowings and Outstanding Debt (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019	Feb. 01, 2020
Debt Instrument [Line Items]
Total borrowings	$ 1,350,000		$ 1,350,000		$ 1,450,000
Less: Unamortized debt discount and issuance cost	(8,195)		(8,195)		(10,976)
Net carrying amount of debt	1,341,805		1,341,805		1,439,024
Less: Current portion (1)	349,004		349,004		0
Non-current portion	992,801		992,801		1,439,024
Interest expense	14,100	$ 20,600	43,600	$ 59,800
Term Loan
Debt Instrument [Line Items]
Total borrowings	350,000		350,000		450,000
Notes \| 2023 Notes
Debt Instrument [Line Items]
Total borrowings	500,000		500,000		500,000
Notes \| 2028 Notes
Debt Instrument [Line Items]
Total borrowings	$ 500,000		$ 500,000		$ 500,000