Debt and Credit Facility (Details 1) (USD $)	12 Months Ended							12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013 Two And Six Two Five Percent Senior Convertible Debentures [Member]	Mar. 31, 2012 Two And Six Two Five Percent Senior Convertible Debentures [Member]	Mar. 29, 2014 2019 and 2021 Notes Payable [Member]	Mar. 29, 2014 Two And One Two Five Percent 2019 Senior Debentures [Member]	Mar. 30, 2013 Three And One Two Five Percent Junior Subordinated Convertible Debentures [Member]	Mar. 31, 2012 Three And One Two Five Percent Junior Subordinated Convertible Debentures [Member]	Mar. 12, 2014 Three And One Two Five Percent Junior Subordinated Convertible Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 600,000,000			$ 500,000,000			$ 689,600,000
Hedge Accounting Adjustment - Sale Of Interest Rate Swap				18,716,000
Interest Expense, Debt, Excluding Amortization				15,750,000	15,750,000	1,210,000		21,551,000	21,551,000
Debt Instrument, Unamortized Discount				64,767,000			2,574,000			315,400,000
Amortization of Financing Costs				1,448,000	1,448,000	52,000		223,000	223,000
Amortization of embedded derivative								58,000	58,000
Amortization of Debt Discount (Premium)	16,319,000	15,880,000	15,545,000	11,052,000	11,052,000	80,000		4,828,000	4,493,000
Fair value adjustment of embedded derivative								159,000	(14,000)
Interest Expense, Debt				28,250,000	28,250,000	1,342,000		26,819,000	26,311,000
Proceeds from Issuance of Long-term Debt		0	0			990,149,000
Line of Credit Facility, Expiration Date	Dec. 31, 2016
Line of Credit Facility, Maximum Borrowing Capacity	250,000,000
Line of Credit Facility, Average Outstanding Amount	$ 0