Convertible Senior Notes (Details Textual) (USD $)	3 Months Ended				12 Months Ended	3 Months Ended		12 Months Ended
	Apr. 01, 2012	Apr. 03, 2011	Apr. 01, 2012 0.25% Convertible Senior Notes due 2016 [Member]	Apr. 03, 2011 0.25% Convertible Senior Notes due 2016 [Member]	Jan. 01, 2012 0.25% Convertible Senior Notes due 2016 [Member]	Apr. 01, 2012 0.625% Convertible senior notes due 2014 [Member]	Apr. 03, 2011 0.625% Convertible senior notes due 2014 [Member]	Dec. 30, 2007 0.625% Convertible senior notes due 2014 [Member]	Jan. 01, 2012 0.625% Convertible senior notes due 2014 [Member]	Apr. 01, 2012 Warrants [Member]	Dec. 30, 2007 Warrants [Member]
Debt Instrument [Line Items]
Issuance of convertible senior notes					$ 920,000,000			$ 400,000,000
Interest rate on convertible senior notes			0.25%		0.25%	0.625%		0.625%
Debt issuance price as a percentage of principal					98.25%
Debt issuance costs					400,000
Conversion rate per $1,000 principal amount of notes (in shares per thousand dollars)			11.9687
Principal amount used in calculating incremental share settlement amount			1,000
Conversion price (in dollars per share)			$ 83.55
Circumstances of converting notes at referred conversion ratio			(1) during the five business-day period after any 10 consecutive trading day period (the “measurement period”) in which the trading price per 2016 Note for each day of such measurement period was less than 98% of the product of the last reported sale price of the Company's common stock and the conversion rate on each such day; (2) during any calendar quarter (and only during that quarter) after the calendar quarter ending March 31, 2011, if the last reported sale price of the Company's common stock for 20 or more trading days in the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter exceeds 130% of the applicable conversion price in effect on the last trading day of the immediately preceding calendar quarter; (3) upon the occurrence of specified events described in the indenture for the 2016 Notes; and (4) at any time on or after December 15, 2015 through the second scheduled trading day immediately preceding the maturity date.
Amortization period for debt issuance cost (in years)					5 years
Number of consecutive trading days on which trading price is examined for triggering of conversion (in days)			30 days
Number of business days 2016 notes are convertible after measurement period (in days)			20 days
Number of consecutive trading days in the measurement period (in days)			20 days
Conversion triggering common stock trading price as a percentage of price last reported in Measurement period converted at conversion rate			less than 98%
Number of days in which common stock prices needed to exceed triggering price in order to trigger conversion (in days)			20 or more
Conversion triggering common stock price as a percentage of applicable conversion price in effect on the last trading day of the immediately preceding calendar quarter			exceeds 130%
Date after which notes will become convertible			Dec. 15, 2015
Maximum payment on principal portion to be cash settled upon conversion			1,000
Interest payments			1,200,000
Repurchase Price as a Percentage of Principal Amount upon designated events			100.00%
Effective interest rates used to measure fair value of converted notes			4.50%		4.50%	8.30%
Fair value of liability component at issuance					748,500,000
Carrying value of equity component, net of debt issuance cost					155,366,000	113,413,000			114,035,000
Cash proceeds					903,900,000
Maximum shares entitles to purchase shares under hedge transaction upon issuance of the convertible senior notes (in shares)								18,322,000
Exercise price of warrants held by hedging counter parties (in dollars per share)										$ 31.435	$ 31.435
Strike price of warrants held by the Company under hedge transaction upon issuance of the convertible senior notes (in dollars per share)								$ 21.83
Maximum shares entities to purchase shares under hedge transaction upon issuance of the convertible senior notes (in shares)										18,322,000	18,322,000
Principal amount of convertible notes outstanding			920,000,000		920,000,000	40,125,000			40,125,000
Maximum shares entities to purchase shares under hedge transactions upon issuance of convertible senior notes outstanding principal (in shares)						1,838,000
If-converted value in excess of principal						55,400,000
Accretion of discount on the liability component	$ 8,599,000	$ 6,514,000	$ 8,000,000	$ 1,200,000			$ 5,300,000