Net Income Per Common Share (Details) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Debt Instrument [Line Items]
Potentially dilutive common equivalent shares outstanding	6.7	4.1	5.6	4.3
Antidilutive shares excluded from computation of dilutive net income per common share	1.4		3.7
Convertible Debt [Member]
Debt Instrument [Line Items]
Potentially dilutive common equivalent shares outstanding	15.5		13.3
Three And One Two Five Percent Junior Subordinated Convertible Debentures [Member]
Debt Instrument [Line Items]
Potentially dilutive common equivalent shares outstanding		5.5		5.8