Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - Estimate of Fair Value - USD ($) $ in Millions	Nov. 01, 2019	Feb. 01, 2019	Nov. 02, 2018
Short-term Investments
Investments, Fair Value Disclosure
Investments	$ 127	$ 218	$ 208
Short-term Investments | Money market funds | Fair Value (Level 1)
Investments, Fair Value Disclosure
Investments	83	207	181
Short-term Investments | Agency securities | Fair Value (Level 2)
Investments, Fair Value Disclosure
Investments	19	10	10
Short-term Investments | U.S. Treasury securities | Fair Value (Level 1)
Investments, Fair Value Disclosure
Investments	13	0	0
Short-term Investments | Corporate debt securities | Fair Value (Level 2)
Investments, Fair Value Disclosure
Investments	12	1	0
Short-term Investments | Certificates of deposit | Fair Value (Level 1)
Investments, Fair Value Disclosure
Investments	0	0	17
Long-term Investments
Investments, Fair Value Disclosure
Investments	363	256	290
Long-term Investments | Agency securities | Fair Value (Level 2)
Investments, Fair Value Disclosure
Investments	30	65	66
Long-term Investments | U.S. Treasury securities | Fair Value (Level 1)
Investments, Fair Value Disclosure
Investments	258	0	0
Long-term Investments | Corporate debt securities | Fair Value (Level 2)
Investments, Fair Value Disclosure
Investments	$ 75	$ 191	$ 224