Summary of Significant Accounting Policies (Restricted Cash Reconciliation) (Details) - USD ($) $ in Thousands	Nov. 03, 2018	Feb. 03, 2018		Oct. 28, 2017		Jan. 28, 2017	[1]
Accounting Policies [Abstract]
Cash and cash equivalents	$ 1,349,196	$ 1,290,294		$ 1,144,169
Prepaid expenses and other	8,933	9,412		12,776
Other long-term assets	53,460	53,566		50,992
Total restricted cash and cash equivalents	62,393	62,978		63,768
Total cash, cash equivalents and restricted cash and equivalents	$ 1,411,589	$ 1,353,272	[1]	$ 1,207,937	[1]	$ 1,176,180

[1] As the result of the adoption of ASU 2016-18, Statement of Cash Flow (Topic 230): Restricted Cash, the prior year amounts were retrospectively adjusted to include restricted cash and cash equivalents. See Note A.