Financing Arrangements (Details Textuals)	1 Months Ended		3 Months Ended
	Oct. 27, 2013 USD ($) $ / shares shares	Aug. 31, 2010 USD ($) $ / shares shares	Jul. 03, 2016 USD ($)	Apr. 03, 2016 USD ($) $ / shares shares	Mar. 29, 2015 USD ($)	Jan. 03, 2016 USD ($)	Oct. 23, 2013 USD ($) $ / shares shares
Debt Conversion
Repayment of debt financing				$ 0	$ 68,000
Temporary Conversion Obligation
Share Price | $ / shares				$ 76.20
1.5% Sr. Convertible Notes due 2017 [Member]
Debt Instrument Details
Convertible debt, par value		$ 1,000,000,000		$ 996,715,000		$ 996,715,000
Debt Instrument, Interest Rate, Effective Percentage		6.85%		6.85%		6.85%
Convertible Senior Notes, issuance date		Aug. 20, 2010
Convertible Senior Notes, due date		Aug. 15, 2017
Convertible senior notes, interest rate		1.50%
Conversion rate, number of share converted		19.0931		19.7302
Conversion of notes, base conversion price		$ 1,000		$ 1,000
Debt Instrument, Convertible, Conversion Shares | shares		19,100,000		19,700,000
Conversion price per share | $ / shares		$ 52.37		$ 50.68
Debt Carrying Value Information
Net proceeds from the offering of the Notes due		$ 981,000,000
Principal amount of the liability component		706,000,000
Carrying value of the equity component		294,000,000
Debt Instrument, Unamortized Bond Discount				$ 68,649,000		$ 80,488,000
Remaining amortization period of convertible debt				1 year 5 months
Debt Issuance Costs
Debt Related Commitment Fees and Debt Issuance Costs		18,700,000
Adjustment To Additional Paid In Capital Debt Issuance Cost		5,500,000
Convertible note issuance costs		$ 13,200,000		$ 2,580,000		3,049,000
Convertible Bond Hedge
Bond hedge options, exercise price | $ / shares		$ 52.37		$ 50.68
Number of shares an entity can purchase from counterparties | shares		19,100,000		19,700,000
Warrants
Exercise price of warrants | $ / shares		$ 73.3250
Number of shares counterparties can purchase from entity | shares		19,100,000
Number of warrants exercised | shares				0
Liabilities Subject to Compromise, Early Contract Termination Fees, Net				$ 417,900,000
Liabilities Subject to Compromise, Early Contract Termination Fees				424,000,000
Loss on Termination of Warrant Rights				(6,100,000)
Temporary Conversion Obligation
Temporary Equity, Par Value				$ (68,600,000)
Debt Instrument, Convertible, If-Converted Shares for Value in Excess of Principal | shares				6,600,000
1.5% Sr. Convertible Notes due 2017 [Member] | Shares, Whole [Member]
Convertible Bond Hedge
Number of shares purchased under bond hedge | shares				27,134
1.5% Sr. Convertible Notes due 2017 [Member] | Settled, Current and Past Period [Member]
Debt Conversion
Extinguishment of Debt, Amount				$ 3,300,000
1.5% Sr. Convertible Notes due 2017 [Member] | Settled, Future Period [Member] | Subsequent Event [Member]
Debt Conversion
Extinguishment of Debt, Amount			$ 16,000
0.5% Sr. Convertible Notes due 2020 [Member]
Debt Instrument Details
Convertible debt, par value				$ 1,500,000,000		$ 1,500,000,000	$ 1,500,000,000
Debt Instrument, Interest Rate, Effective Percentage				4.43%		4.43%	4.43%
Convertible Senior Notes, issuance date	Oct. 29, 2013
Convertible Senior Notes, due date	Oct. 15, 2020
Convertible senior notes, interest rate							0.50%
Conversion rate, number of share converted	10.8470			10.9006
Conversion of notes, base conversion price	$ 1,000			$ 1,000
Debt Instrument, Convertible, Conversion Shares | shares				16,400,000			16,300,000
Conversion price per share | $ / shares				$ 91.74			$ 92.19
Debt Carrying Value Information
Net proceeds from the offering of the Notes due	1,480,000,000
Principal amount of the liability component							$ 1,150,000,000
Carrying value of the equity component							352,000,000
Debt Instrument, Unamortized Bond Discount				$ 241,104,000		$ 252,940,000
Remaining amortization period of convertible debt				4 years 7 months
Debt Issuance Costs
Debt Related Commitment Fees and Debt Issuance Costs	17,600,000
Adjustment To Additional Paid In Capital Debt Issuance Cost	$ 4,100,000
Convertible note issuance costs				$ 8,804,000		$ 9,284,000	$ 13,500,000
Convertible Bond Hedge
Bond hedge options, exercise price | $ / shares	$ 92.19			$ 91.74
Number of shares an entity can purchase from counterparties | shares	16,300,000			16,400,000
Number of shares purchased under bond hedge | shares				0
Warrants
Exercise price of warrants | $ / shares				$ 122.3181			$ 122.9220
Number of shares counterparties can purchase from entity | shares	16,300,000			16,400,000
Number of warrants exercised | shares				0
Warrant Modification Charge				$ 5,500,000
Temporary Conversion Obligation
Temporary Equity, Par Value				$ 241,100,000