Impact of New Accounting Pronouncements (Narrative) (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]
Lease right-of-use assets		$ 735,282	$ 0	$ 0
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease right-of-use assets	$ 729,200
Operating Lease, Liability	791,700
Cumulative-effect adjustment to retained earnings, net of tax	13,400
Income tax asset | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect on retained earnings, tax	$ 4,700