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Borrowings and Credit Arrangements - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 09, 2016 | May 29, 2015 | Dec. 24, 2014 | Feb. 26, 2014 | Nov. 14, 2013 | Oct. 31, 2013 | Feb. 14, 2013 | Feb. 29, 2012 | Aug. 01, 2012 | Dec. 10, 2007 | Sep. 24, 2016 | Mar. 26, 2016 | Dec. 26, 2015 | Sep. 26, 2015 | Jun. 27, 2015 | Dec. 27, 2014 | Mar. 29, 2014 | Dec. 28, 2013 | Dec. 25, 2010 | Jul. 01, 2015 | Jun. 27, 2015 | Sep. 24, 2016 | Sep. 26, 2015 | Sep. 27, 2014 | Aug. 01, 2015 | Jul. 02, 2015 | Nov. 18, 2010
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  | $ 800,000 | $ 4,500,000 |  | $ (37,800,000) | $ 18,200,000 | $ 6,700,000 |  |  |  |  |  | $ 5,300,000 | $ 62,700,000 | $ 7,400,000 |  |  |
Payments of Debt Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 22,700,000 | 2,400,000 |  |  |
Non-cash interest expense amortization of debt discount and deferred financing costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 52,100,000 | 63,800,000 | 68,700,000 |  |  |
Repayments of Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 392,800,000 | 543,700,000 | 0 |  |  |
Principal Amount Of Borrowings |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |  |
Convertible Notes Payable, Current |  |  |  |  |  |  |  |  |  |  | $ 12,200,000 |  |  | 141,800,000 |  |  |  |  |  |  |  | 12,200,000 | 141,800,000 |  |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (94,400,000) | (216,900,000) |  |  |  |
Failure To Comply With Reporting Obligations Penalty Fee Percentage Of Convertible Notes |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Maximum Number of Shares |  |  |  |  |  |  |  |  |  |  | 29.6 |  |  |  |  |  |  |  |  |  |  | 29.6 |  |  |  |  |
Period To Remedy Event Of Default For Failure To Comply With Reporting Obligations Of Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90 days |  |  |  |  |
Amount Repaid Under Revolver |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 175,000,000 |  |  |  |  |
Long-term Debt, Current Maturities |  |  |  |  |  |  |  |  |  |  | $ 296,000,000 |  |  | 391,200,000 |  |  |  |  |  |  |  | 296,000,000 | 391,200,000 |  |  |  |
Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds under credit agreement |  | $ 1,680,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Number of Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |
Direct Third Party Costs Interest Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,600,000 |  |  |  |  |  |  |  |  |  |  |  |
Payments of Debt Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Fees recorded as debt discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,900,000 |  |  |  |  |  |  |  |  |  |  |  |
Maximum Range Of Present Value Of Cash Flow Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,400,000 | 75,300,000 | 54,700,000 |  |  |
Non-cash interest expense amortization of debt discount and deferred financing costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,400,000 | $ 9,000,000 | $ 12,700,000 |  |  |
Notes principal amount |  |  |  |  |  |  |  |  | $ 2,800,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal Amount Of Borrowings |  |  |  |  |  |  |  |  | 2,500,000,000 |  | 1,410,000,000 |  |  |  |  |  |  |  |  |  |  | $ 1,410,000,000 |  |  |  |  |
Net Proceeds From Debt Offering |  |  |  |  |  |  |  |  | $ 2,410,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.08% | 2.43% | 2.89% |  |  |
Leverage Ratio Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.50 |  |  |  |  |
Decreased Net Leverage Ratio Pursuant To Senior Secured Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00 |  |  |  |  |
Interest Coverage Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.75 |  |  |  |  |
Credit Agreement [Member] | Percentage Added to Eurodollar Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.05% |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  | $ 22,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 56,016,000 | $ 67,247,000 | $ 64,000,000 |  |  |
Non-cash interest expense amortization of debt discount and deferred financing costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,804,000 | $ 2,138,000 | 1,700,000 |  |  |
Debt Instrument, Interest Rate During Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.25% |  |  |  |  |  |  |
Long Term Debt Obligations Without Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |
Final interest payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31,250,000 |  |
2022 Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Maturity Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2022 |  |  |  |
Debt Instrument, Interest Rate During Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.25% |  |  |  |
Long Term Debt Obligations Without Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |
Offering Price Of Principal Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Debt Instrument Maximum Percentage Of Redemption Of Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35.00% |
Debt Instrument Percentage Of Redemption Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Debt Instrument Percentage Of Redemption Price Second Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 105.25% |
Debt Instrument Percentage Of Redemption Price Third Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 102.625% |
Debt Instrument Percentage Of Redemption Price Fourth Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101.313% |
Debt Instrument Percentage Of Redemption Price Fifth Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Percentage Price Of Principal Amount For Repurchase Of Senior Note Change In Control |  |  |  |  |  |  |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  | $ 15,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains (Losses) on Recourse Debt |  |  |  |  |  |  |  |  |  |  | (14,400,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date Range, Start |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 15, 2017 |  |  |  |  |
Redemption Price As Percentage Of Principal Amount Plus Accrued And Unpaid Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Cash Per Original Principle Amount Of Exchange Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |
Convertible Notes Issuance Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,100,000 |  |  |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  |  |  |  |  |  |  |  |  |  | 246,100,000 |  |  |  |  |  |  |  |  |  |  | $ 32,500,000 |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  | 700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allocated Third Party Costs |  |  |  |  |  |  |  |  |  |  | $ 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Nonconvertible Effective Interest Rate |  |  |  |  |  |  |  |  |  |  | 2.71% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Taxes, Reacquisition of Equity Component |  |  |  |  |  |  |  |  |  |  | $ 29,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Notes [Member] | 2007 Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes principal amount |  |  |  |  | $ 405,000,000 |  | $ 370,000,000 | $ 500,000,000 |  | $ 1,725,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 450,000,000
Convertible Notes [Member] | Two Thousand Thirteen Original Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Exceeds Percentage Of Accreted Principal Amount Of Original Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 120.00% |  |  |  |  |
Principal Convertible To Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |
Accounts Receivable Securitization [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |
Principal Amount Of Borrowings |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |
Term AR Securitization Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |
Accounts Receivable from Securitization |  |  |  |  |  |  |  |  |  |  | 200,000,000 |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |
Debt Instrument, Description of Variable Rate Basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.007 |  |  |  |  |
Accounts Receivable Securitization [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable from Securitization |  |  |  |  |  |  |  |  |  |  | 200,000,000 |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |
Accounts Receivable Securitization [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.22% |  |  |  |  |
Long-term Debt, Current Maturities |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  | $ 0 |  |  |  |  |  |  |  | $ 200,000,000 | $ 0 |  |  |  |
Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  |  | (4,500,000) |  |  |  |  |  |  |  |  |  | (5,300,000) |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,000,000 | 70,700,000 | 76,600,000 |  |  |
Non-cash interest expense amortization of debt discount and deferred financing costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40,000,000 | $ 52,500,000 | $ 54,300,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  | 2.00% |  |  |  |  |  |  |  | 2.00% | 2.00% |  |  |  |
Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long Term Debt Obligations Without Convertible Notes |  |  |  |  |  |  |  |  |  |  | $ 1,308,200,000 |  |  | $ 1,388,300,000 |  |  |  |  |  |  |  | $ 1,308,200,000 | $ 1,388,300,000 |  |  |  |
Long-term Debt, Current Maturities |  |  |  |  |  |  |  |  |  |  | 83,800,000 |  |  | 74,400,000 |  |  |  |  |  |  |  | 83,800,000 | 74,400,000 |  |  |  |
Term Loan [Member] | Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  | 1,500,000,000 |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 29, 2020 |  |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instruments Principal Repayment Due Per Quarter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,750,000 |  |  |  |  |
Term Loan [Member] | Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instruments Principal Repayment Due Per Quarter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 37,500,000 |  |  |  |  |
Revolver [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Current Maturities |  |  |  |  |  |  |  |  |  |  | 0 |  |  | 175,000,000 |  |  |  |  |  |  |  | 0 | 175,000,000 |  |  |  |
Revolver [Member] | Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 29, 2020 |  |  |  |  |
Amount borrowed under revolver |  | $ 175,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Wholly owned foreign subsidiary borrowing limit |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan A [Member] | Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Aug. 01, 2017 |  |  |  |  |  |
Revolving Credit Facility [Member] | Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 300,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Aug. 01, 2017 |  |  |  |  |  |
Term Loan B [Member] | Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Aug. 01, 2019 |  |  |  |  |  |
Prepaid principal amount |  |  | $ 300,000,000 | $ 25,000,000 |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  |  |  | $ (6,700,000) |  |  |  | $ 4,400,000 | $ 2,900,000 |  |  |  |  |  |  |  |  |
Number of Debt Instruments |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Direct Third Party Costs Interest Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |
Maximum Range Of Present Value Of Cash Flow Percentage |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2007 Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Maturity Period |  |  |  |  |  |  |  |  |  | 2037 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November Eighteen Two Thousand Ten Original Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00%
Debt Instrument Maturity Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2037 |  |  |  |  |  |  |  |
Notes principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 450,000,000
November Eighteen Two Thousand Ten Original Notes [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes principal amount |  |  |  |  |  |  |  |  |  |  |  | 90,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February Twenty Nine Two Thousand Twelve Original Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Notes, Triggering Events |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
February Twenty Nine Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Maturity Period |  |  |  |  |  |  |  | 2042 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes principal amount |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Two Thousand Seven Original Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Repurchase Price Percentage Of Principle Amount |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Convertible Effective Interest Rate One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.25% |  |  |  |  |
Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Annual Yield To Maturity On Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Exceeds Percentage Of Accreted Principal Amount Of Original Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 120.00% |  |  |  |  |
Exceeds Percentage Of Conversion Price Of Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 130.00% |  |  |  |  |
Number Of Trading Days Considered For Average Closing Daily Prices Description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | During the five business day period after any five consecutive trading day period |  |  |  |  |
Percentage To Compare Note Price To Product Of Common Stock And Conversion Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 98.00% |  |  |  |  |
Principal Convertible To Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |
Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Trading Days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |
Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Trading Days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |
Due December Two Zero One Seven [Member] | Convertible Notes [Member] | Two Thousand Thirteen Original Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual Yield To Maturity On Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |
Thereafter [Member] | Convertible Notes [Member] | Two Thousand Thirteen Original Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual Yield To Maturity On Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Two Thousand Thirteen Original Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum Range Of Present Value Of Cash Flow Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |
Change In Fair Value Of Conversion Option Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |
Two Thousand Thirteen Original Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exceeds Percentage Of Conversion Price Of Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 130.00% |  |  |  |  |
Number Of Trading Days Considered For Average Closing Daily Prices Description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | During the five business day period after any five consecutive trading day period |  |  |  |  |
Percentage To Compare Note Price To Product Of Common Stock And Conversion Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 98.00% |  |  |  |  |
Convertible Notes, Triggering Events |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
Debt Instrument Convertible Effective Interest Rate One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.42% |  |  |  |  |
Gains Losses On Exchange Of Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
Two Thousand Thirteen Original Notes [Member] | Convertible Notes [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Trading Days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |
Two Thousand Thirteen Original Notes [Member] | Convertible Notes [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Trading Days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |
February Fourteen Two Thousand And Thirteen Original Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Maturity Period |  |  |  |  |  |  | 2043 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes principal amount |  |  |  |  |  |  | $ 370,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate redemption price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,030,000,000 |  |
Premium payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31,250,000 |  |
Two Thousand Ten Original Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  | $ (800,000.0) |  |  | (15,500,000.0) |  |  |  |  |  |  |  |  |  |  |  |  |
Principle Convertible Debt Put During Period |  |  |  |  |  |  |  |  |  |  | $ 1,300,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Notes principal amount |  |  |  |  |  |  |  |  |  |  | $ 46,300,000.0 |  |  | 300,000,000.0 |  |  |  |  |  |  |  | $ 46,300,000.0 | 300,000,000.0 |  |  |  |
Repayments of Convertible Debt |  |  |  |  |  |  |  |  |  |  | 79,200,000.0 |  |  | $ 543,700,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Amount by which the if-converted value exceeds the principal amount |  |  |  |  |  |  |  |  |  |  | 7,900,000.0 |  |  |  |  |  |  |  |  |  |  | $ 7,900,000.0 |  |  |  |  |
Annual Yield To Maturity On Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Exceeds Percentage Of Accreted Principal Amount Of Original Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 120.00% |  |  |  |  |
Conversion Of Notes Into Shares Conversion Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 23.03 |  |  |  |  |
Exceeds Percentage Of Conversion Price Of Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 130.00% |  |  |  |  |
Convertible Notes Payable, Current |  |  |  |  |  |  |  |  |  |  | $ 12,200,000.0 |  |  |  |  |  |  |  |  |  |  | $ 12,200,000.0 |  |  |  |  |
Number Of Trading Days Considered For Average Closing Daily Prices Description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | during the five business day period after any five consecutive trading day period |  |  |  |  |
Percentage To Compare Note Price To Product Of Common Stock And Conversion Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 98.00% |  |  |  |  |
Principal Convertible To Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |
Two Thousand Ten Original Notes [Member] | Convertible Notes [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Trading Days |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |
Two Thousand Ten Original Notes [Member] | Convertible Notes [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Trading Days |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |
Two Thousand Ten Original Notes [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains (Losses) on Recourse Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 |  |  |  |  |
Repayments of Convertible Debt |  |  |  |  |  |  |  |  |  |  |  | $ 140,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Of Notes Into Shares Conversion Price |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 83,700,000 |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  |  |  |  |
Allocated Third Party Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  |  |
Debt Instrument Nonconvertible Effective Interest Rate |  |  |  |  |  |  |  |  |  |  |  | 2.71% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Taxes, Reacquisition of Equity Component |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,700,000 |  |  |  |  |
Two Thousand Ten Original Notes [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (4,600,000) |  |  |  |  |
Two Thousand And Twelve Notes [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Of Notes Into Shares Conversion Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31.175 |  |  |  |  |
Two Thousand And Twelve Notes [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (700,000) |  |  |  |  |
Notes principal amount |  |  |  |  |  |  |  |  |  |  |  | $ 136,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Convertible Debt |  |  |  |  |  |  |  |  |  |  |  | $ 171,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Of Notes Into Shares Conversion Price |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 38,900,000 |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |
Allocated Third Party Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  |  |
Deferred Taxes, Reacquisition of Equity Component |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,500,000 |  |  |  |  |
Year Two Thousand Thirteen [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Of Notes Into Shares Conversion Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 38.59 |  |  |  |  |
Other Current Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 |  |  |  |
Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27,600,000 |  |  |  |
Other Noncurrent Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 27,000,000 |  |  |  |
First Valuation Date [Member] | Two Thousand And Twelve Notes [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Nonconvertible Effective Interest Rate |  |  |  |  |  |  |  |  |  |  |  | 3.87% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Second Valuation Date [Member] | Two Thousand And Twelve Notes [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Nonconvertible Effective Interest Rate |  |  |  |  |  |  |  |  |  |  |  | 3.41% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption Price As Percentage Of Principal Amount Plus Accrued And Unpaid Interest | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Aggregate redemption price + References No definition available. + Details
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- Definition Allocated Third Party Costs recorded within debt extinguishment loss + References No definition available. + Details
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- Definition Amount by which the if-converted value exceeds the principal amount + References No definition available. + Details
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- Definition Represents the rate at which the convertible notes will accrete principal to maturity beginning on either the date that the semi-annual cash coupon payments end, or as applicable, the date of issuance of new convertible notes in an exchange transaction. + References No definition available. + Details
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- Definition In lieu of delivery of shares of the Company's common stock in satisfaction of the Company's obligation upon conversion of the Original Notes and Exchange Notes, the Company may elect to deliver cash or a combination of cash and shares of its common stock. If the Company elects to satisfy its conversion obligation in a combination of cash and shares of the Company's common stock, the Company is required to deliver up to a specified dollar amount of cash per $1,000 original principal amount of Original Notes, and will settle the remainder of its conversion obligation in shares of its common stock. + References No definition available. + Details
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- Definition The convertible notes conversion price into shares of the Company's common stock. + References No definition available. + Details
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- Definition Third-party costs incurred related to the exchange of debt, that was accounted for as a modification, and was charged to the statement of income in the period incurred. + References No definition available. + Details
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- Definition Convertible Notes, Triggering Events 1) During any calendar quarter if the last reported sales price of the Company's common stock exceeds 130% of the conversion price for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter 2) During the 5 business day period after any five consecutive trading day period in which the trading price per note for each day of such period was less than 98% of the product of the last reported sales price of the Company's common stock and the conversion rate on each such day 3) If the notes have been called for redemption 4) Upon the occurrence of specified corporate events + References No definition available. + Details
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- Definition The effective interest rate on the liability component of convertible debt instrument which may be settled in cash upon conversion, including partial cash settlement. + References No definition available. + Details
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- Definition Debt instrument maturity period. This is the year the respective debt instrument is due. + References No definition available. + Details
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- Definition Maximum percentage of aggregate principal of Senior Notes that can be redeemed with net cash proceeds from certain equity offerings at any time before August 1, 2015. + References No definition available. + Details
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- Definition Debt Instrument Nonconvertible Effective Interest Rate + References No definition available. + Details
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- Definition Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company prior to August 1, 2015. + References No definition available. + Details
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- Definition Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company beginning August 1, 2018 and thereafter. + References No definition available. + Details
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- Definition Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company after August 1, 2017 through July 31, 2018. + References No definition available. + Details
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- Definition Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company after August 1, 2015 through July 31, 2016. + References No definition available. + Details
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- Definition Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company after August 1, 2016 through July 31, 2017. + References No definition available. + Details
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- Definition Debt instrument prepaid principal amount. + References No definition available. + Details
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- Definition Debt Instrument Repurchase Price Percentage Of Principle Amount + References No definition available. + Details
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- Definition Debt Instruments Principal Repayment Due Per Quarter + References No definition available. + Details
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- Definition The lowest the total net leverage ratio will be under the senior secured credit facilities beginning the quarter ending September 30, 2017. + References No definition available. + Details
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- Definition Deferred Taxes, Reacquisition of Equity Component + References No definition available. + Details
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- Definition Direct Third party Costs Interest Expense + References No definition available. + Details
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- Definition Percent by which trading price of notes exceeds accreted principal resulting in contingent interest. + References No definition available. + Details
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- Definition The holders of the 2007 Notes, 2010 Notes, 2012 Notes and 2013 Notes may convert the notes into shares of the Company's common stock at a conversion price of approximately $38.59 per share, $23.03 per share, $31.175 and $38.59 per share, respectively, subject to adjustment, prior to the close of business on September 15, 2037 for the 2007 and 2010 Notes, March 1, 2042 for the 2012 Notes and September 15, 2043 for the 2013 Notes upon: during any calendar quarter if the last reported sale price of the Company's common stock exceeds 130% of the conversion price for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter. + References No definition available. + Details
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- Definition Represents the percentage of the accreted principal amount of the Convertible Notes to be paid as an extension fee penalty in the event of default, as defined, related to the Company's failure to comply with the reporting obligations in the Convertible Notes. + References No definition available. + Details
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- Definition Fees recorded as debt discount + References No definition available. + Details
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- Definition Final interest payment + References No definition available. + Details
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- Definition Gains Losses on Exchange of Debt + References No definition available. + Details
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- Definition Interest Coverage Ratio + References No definition available. + Details
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- Definition Leverage Ratio Maximum + References No definition available. + Details
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- Definition Long term debt obligations without convertible notes. + References No definition available. + Details
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- Definition Maximum Range of Present Value of Cash Flow Percentage + References No definition available. + Details
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- Definition The net proceeds to the company from the debt offering after deducting underwriters discounts and fees. + References No definition available. + Details
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- Definition Number of trading days. + References No definition available. + Details
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- Definition Number of trading days considered for average closing daily prices description. + References No definition available. + Details
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- Definition Number of Debt Instruments + References No definition available. + Details
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- Definition The percentage applied to the price of the principal amount of the Senior Notes at which the Company is required to repurchase the Senior Notes in the event there is a change-in-control. + References No definition available. + Details
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- Definition Percent that the trading price per note is less than product of the common stock price and conversion rate, allowing holders to convert notes to common shares. + References No definition available. + Details
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- Definition Period To Remedy Event Of Default For Failure To Comply With Reporting Obligations Of Convertible Notes + References No definition available. + Details
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- Definition Represents the aggregate outstanding principal of amounts borrowed under the Credit Agreement. + References No definition available. + Details
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- Definition The conversion rate will not be adjusted for accrued interest or accreted principal in excess of the original $1,000 principal amount. + References No definition available. + Details
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- Definition Principle Convertible Debt Put During Period + References No definition available. + Details
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- Definition Redemption price as percentage of principal amount plus accrued and unpaid interest. + References No definition available. + Details
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- Definition Term Accounts Receivable Securitization Program + References No definition available. + Details
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- Definition Amount of noncash expense included in interest expense to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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