Fair Value Measurements (Details) (USD $)	Oct. 29, 2011 Short Term Debt October 2012 Notes including Unamortized Gain [Member]	Oct. 29, 2011 Short Term Debt October 2012 Notes [Member]	Jul. 30, 2011 Short Term Debt October 2012 Notes [Member]	Jan. 29, 2011 Long Term Debt October 2012 Notes [Member]	Oct. 29, 2011 January 2014 Notes	Jan. 29, 2011 January 2014 Notes
Debt Instrument
Total long-term debt	$ 335,474,000
Debt instrument stated percentage (as a percent)			7.375%		9.75%
Interest rate swap agreement, debt amount of hedged item					750,000,000
Debt instrument, carrying value of unhedged portion				0	1,528,196,000	750,000,000
Debt instrument, fair value of unhedged portion		$ 343,517,000		$ 0	$ 1,730,229,000	$ 915,450,000