Stock Incentive Plan (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended								3 Months Ended		9 Months Ended
	Nov. 22, 2013 Performance Units [Member]	Nov. 23, 2012 Performance Units [Member]	Nov. 22, 2013 Performance Units [Member]	Nov. 23, 2012 Performance Units [Member]	Nov. 22, 2013 Performance Units [Member] Market Condition [Member]		Nov. 23, 2012 Performance Units [Member] Market Condition [Member]		Nov. 25, 2011 Performance Units [Member] Market Condition [Member]		Nov. 22, 2013 Restricted Stock Units [Member]	Nov. 23, 2012 Restricted Stock Units [Member]	Nov. 22, 2013 Restricted Stock Units [Member]	Nov. 23, 2012 Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 0.3	$ 0.7	$ 5.7	$ 4.8							$ 1.8	$ 0.8	$ 8.6	$ 3.0
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate					0.30%	[1]	0.50%	[1]	1.40%	[1]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term					3 years		3 years		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate					44.70%	[2]	49.80%	[2]	50.90%	[2]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			1,932,030										1,221,227
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			839,448										1,092,941
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period													242,392
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			87,100										44,092
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2,684,378		2,684,378								2,027,684		2,027,684
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value			$ 13.96										$ 9.42
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 14.08		$ 15.51		$ 11.92		$ 16.56				$ 13.45
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value													$ 8.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value			$ 12.59										$ 9.86
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 14.04		$ 14.04								$ 11.69		$ 11.69
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 0.1	$ 0.2	$ 2.2	$ 1.8							$ (0.4)	$ 0.4	$ 1.8	$ 1.2

[1] Based on the U.S. government bond benchmark on the grant date.

[2] Represents the historical price volatility of the Company’s common stock for the three-year period preceding the grant date.