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Borrowings - 3.875% Convertible Senior Subordinated Notes (Details) - USD ($) shares in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Apr. 04, 2016 | Apr. 28, 2016 | Sep. 25, 2016 | Sep. 27, 2015 | Sep. 25, 2016 | Sep. 27, 2015
Short-term Debt [Line Items] |  |  |  |  |  |
Repayments of debt |  |  |  |  | $ 714,487,000 | $ 303,627,000
Conversion of convertible notes, shares issued upon conversion |  |  | 1,300 | 2,900 | 1,900 | 2,600
Loss on extinguishment of debt |  |  | $ 0 | $ 0 | $ 19,261,000 | $ 10,454,000
Exchange Consideration | Convertible Debt | Convertible Notes Payable |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Extinguishment of debt, amount | $ 219,200,000 |  |  |  |  |
Cash payment per $1,000 principal amount | 1,000 |  |  |  |  |
Repayments of debt | 220,700,000 |  |  |  |  |
Repayments of debt, accrued interest | $ 1,500,000 |  |  |  |  |
Conversion of convertible notes, shares issued upon conversion | 2,170 |  |  |  |  |
Loss on extinguishment of debt |  | $ 16,300,000 |  |  |  |
Hedge Unwind Agreements And Warrant Unwind Agreements | Convertible Debt | Convertible Notes Payable |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |
Shares received from dealer counterparties | 300 |  |  |  |  |

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