Fair Value Measurements - Balance Sheet Items (Details) (USD $) In Thousands, unless otherwise specified	Aug. 02, 2014	Feb. 01, 2014	Aug. 03, 2013
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 549,784	$ 423,168	$ 550,565
Investments	0	12,006	0
Restricted investments	3,805	3,994	4,030
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	3,660	3,710	4,228
Restricted investments	$ 112	$ 115	$ 117