Basis of Presentation and Summary of Significant Accounting Policies - Adoption of Newly Adopted Accounting Standards (Details) - USD ($) $ in Thousands	Feb. 03, 2019	May 04, 2019	Feb. 02, 2019	May 05, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset		$ 729,950	$ 0	$ 0
Operating lease liability		$ 806,527
ASU 2016-02
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