Summary of Significant Accounting Policies (Stock-based Compensation) (Details) (USD $)
In Millions, unless otherwise specified |
1 Months Ended | 12 Months Ended | ||
---|---|---|---|---|
Mar. 31, 2012
|
Feb. 01, 2014
|
Feb. 02, 2013
|
Jan. 28, 2012
|
|
Accounting Policies [Abstract] | ||||
Stock-based compensation expense | $ 9.9 | $ 6.9 | $ 1.2 | |
Expenses on date of modification | $ 5.3 | $ 0.2 | $ 5.4 |