Taxes on Earnings (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Income Tax Contingency [Line Items]
Realized tax benefits related to employee equity programs		$ 23,331	$ 42,382
Blended tax rate	34.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017, current income tax expense (benefit)	$ (24,900)
Tax Cuts and Jobs Act of 2017, remeasurement of deferred tax assets and liabilities, income tax expense (benefit)	(55,200)
Valuation allowance for deferred tax asset	(4,659)	$ (3,730)
Reserves for unrecognized tax benefits	121,300	98,600	$ 94,200
Interest related to the reserve for unrecognized tax benefits	22,600	17,500	$ 18,800
Impact of recognizing taxes and interest related to unrecognized tax benefits	81,300
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations	$ 8,800
Internal Revenue Service | Earliest
Income Tax Contingency [Line Items]
Open tax year	2013
Internal Revenue Service | Latest
Income Tax Contingency [Line Items]
Open tax year	2017
State
Income Tax Contingency [Line Items]
Tax credit carryforward	$ 14,700	$ 22,800
State | Earliest
Income Tax Contingency [Line Items]
Open tax year	2013
State | Latest
Income Tax Contingency [Line Items]
Open tax year	2017
Accounting Standards Update 2016-09
Income Tax Contingency [Line Items]
Excess tax benefits related to stock-based compensation	$ 16,300