Leases - Cost (Details) $ in Millions	3 Months Ended
	May 02, 2020 USD ($)
Leases
Operating lease expense	$ 16
Variable lease cost	8
Total lease cost	$ 25
Weighted average remaining lease term	6 years 6 months
Weighted average discount rate (as a percent)	4.50%
Cash paid for lease liabilities	$ 8