Borrowings - 3.875% Convertible Senior Subordinated Notes (Details) - USD ($) shares in Thousands		3 Months Ended			6 Months Ended
	Jan. 05, 2017	Jul. 02, 2017	Apr. 02, 2017	Jun. 26, 2016	Jul. 02, 2017	Jun. 26, 2016
Short-term Debt [Line Items]
Repayments of debt					$ 228,273,000	$ 656,479,000
Conversion of convertible notes, shares issued upon conversion		500		1,500	400	2,200
Loss on extinguishment of debt		$ 11,000		$ 19,261,000	$ 5,593,000	$ 19,261,000
Shares delivered to the company by the counterparties to the convertible note hedge transactions					120
3.875% Convertible Senior Subordinated Notes due 2017 | Senior Notes
Short-term Debt [Line Items]
Extinguishment of debt, amount	$ 91,700,000
Principal amount of convertible debt	1,000
Repayments of debt	93,200,000
Repayments of debt, accrued interest	$ 1,500,000
Conversion of convertible notes, shares issued upon conversion	930
Loss on extinguishment of debt			$ 5,200,000
Convertible Debt [Member] | Convertible Notes Payable [Member] | Conversion [Member]
Short-term Debt [Line Items]
Conversion of convertible notes, shares issued upon conversion					500
Shares delivered to the company by the counterparties to the convertible note hedge transactions					500
Short-term Debt		44,300,000			$ 44,300,000
Aggregate principal amount of Convertible Notes tendered to the Company for conversion		$ 44,200,000			$ 44,200,000