Fair Value Measurements (Details 2) (USD $) In Millions, unless otherwise specified	Feb. 02, 2013
Carrying Value | Senior secured term loan
Fair Value Measurements
Long-term loans and notes	$ 1,640
Carrying Value | Senior notes
Fair Value Measurements
Long-term loans and notes	1,007
Carrying Value | Senior subordinated notes
Fair Value Measurements
Long-term loans and notes	393
Fair Value | Senior secured term loan
Fair Value Measurements
Long-term loans and notes	1,655
Fair Value | Senior notes
Fair Value Measurements
Long-term loans and notes	1,101
Fair Value | Senior subordinated notes
Fair Value Measurements
Long-term loans and notes	$ 412