Stockholder's Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended		17 Months Ended
	Nov. 04, 2010	Mar. 31, 2012	Mar. 26, 2011	Mar. 31, 2012
Shares repurchased			1,800,000
Shares repurchased, value			22.8
Average cost per share repurchased			12.94
Preferred Stock, shares authorized		5,000,000	5,000,000	5,000,000
November2010 Repurchase Program [Member]
Share repurchase program, amount approved	80
Shares repurchased		4,900,000	300,000	5,100,000
Shares repurchased, value		76.8		79.5
Average cost per share repurchased		$ 15.63		$ 15.51
Remaining amount available for share repurchases under stock repurchase program		0.5
January 2009 Repurchase Program [Member]
Share repurchase program, amount approved			20
Shares repurchased			1,500,000
Series A Participating Preferred Stock [Member]
Preferred Stock, shares authorized		5,000,000		5,000,000