Summary of Significant Accounting Policies - Unadopted Accounting Pronouncements (Details) - Accounting Standards Update 2016-02 [Member] $ in Millions	12 Months Ended
	Feb. 02, 2019 USD ($)
Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 3,000
Operating Lease, Liability	3,000
Estimate of future ASU adoption cumulative equity adjustment	30
Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	2,600
Operating Lease, Liability	2,600
Estimate of future ASU adoption cumulative equity adjustment	$ 20