Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Feb. 03, 2019	Aug. 03, 2019	Feb. 02, 2019	Aug. 04, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset		$ 697,332	$ 0	$ 0
Operating lease liability		$ 770,174
Cumulative effect of adoption of ASU 2016-02 (see Note 1)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset	$ 764,100
Operating lease liability	845,700
Cumulative effect adjustment on retained earnings	$ 1,300