Debt and Credit Facility (Details) (USD $)	12 Months Ended						12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012	Mar. 29, 2014 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]	Mar. 30, 2013 Two And Six Two Five Percent Senior Convertible Debentures [Member]	Mar. 29, 2014 Two And One Two Five Percent 2019 Senior Debentures [Member]	Mar. 29, 2014 Three Point Zero Percent 2021 Senior Debentures [Member]	Mar. 29, 2014 Two And One Two Five Percent 2019 Senior Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 689,600,000	$ 600,000,000		$ 500,000,000	$ 500,000,000
Debt Instrument, Unamortized Discount					315,400,000	64,767,000		3,556,000	2,574,000
Unamortized Debt Issuance Expense					5,100,000
Debt Instrument Carrying Amount Of Liability Component					377,600,000	553,949,000
2019 Debt instrument, Maturity Date	Mar. 15, 2019
2021 Debt instrument, Maturity Date	Mar. 15, 2021
Equity component - net carrying value					856,500,000	66,415,000
Discount Percent of Par								99.281%	99.477%
Proceeds from Issuance of Long-term Debt		0	0				990,149,000
Extinguishment of Debt, Amount				1,230,000,000
Unamortized discount of embedded derivative from date of issuance					(1,300,000)
Loss on Extinguishment of Debt	9,848,000	0	0	9,800,000
Long-term Debt, Excluding Current Maturities	$ 993,870,000	$ 922,666,000