Stock-Based Employee Compensation-Equity other than Options (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Sep. 23, 2010	Mar. 29, 2015
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of restricted stock units from grant date (in years)	3 years
Annual award vesting percentage	33.33%
Performance Stock Unit Activity
Beginning units outstanding (in shares)		2,924,000
Granted (in shares)		2,001,000
Released (in shares)		(988,000)
Forfeited (in shares)		(480,000)
Ending units outstanding (in shares)		3,457,000
Weighted- Average Grant Date Fair Value Per Share
Beginning units outstanding (in dollars per share)		$ 7.43
Granted (in dollars per share)		$ 13.20
Released (in dollars per share)		$ 7.43
Forfeited (in dollars per share)		$ 8.80
Ending units outstanding (in dollars per share)		$ 10.58
Vested and expected to vest (shares)		2,800,000
Weighted average remaining contractual terms		1 year 2 months 20 days
Intrinsic value		$ 56.3
Performance Shares
Performance Stock Unit Activity
Beginning units outstanding (in shares)		804,000
Granted (in shares)		105,000
Released (in shares)		(238,000)
Forfeited (in shares)		(154,000)
Ending units outstanding (in shares)		517,000
Weighted- Average Grant Date Fair Value Per Share
Beginning units outstanding (in dollars per share)		$ 7.79
Granted (in dollars per share)		$ 9.86
Released (in dollars per share)		$ 8.14
Forfeited (in dollars per share)		$ 7.80
Ending units outstanding (in dollars per share)		$ 8.06
Vested and expected to vest (shares)		400,000
Weighted average remaining contractual terms		0 years 8 months 9 days
Intrinsic value		$ 8.4