Quarterly Financial Data - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net proceeds from note offering									$ 688,162	$ 0	$ 591,156
Gains (Losses) on Extinguishment of Debt									(2,943)	0	(4,277)
Long-term debt	$ 2,380,575				$ 2,067,898				2,380,575	2,067,898
Amortization of Intangible Assets Net of Tax	$ 9,537	$ 11,521	$ 11,169	$ 9,029	$ 9,105	$ 9,086	$ 8,867	$ 8,907	41,256	35,965	29,339
Amortization of Intangible Assets Net of Tax Per Share Basic and Diluted	$ 0.10	$ 0.12	$ 0.12	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.09
Restructuring, integration, and other charges, net of taxes	$ 13,198	$ 12,642	$ 12,895	$ 12,569	$ 11,222	$ 2,556	$ 7,526	$ 8,020	$ 51,305	$ 29,324	$ 65,601
Restructuring Charges Net of Tax Per Share Basic and Diluted	$ 0.14	$ 0.13	$ 0.13	$ 0.13
Restructuring Charges Net of Tax Per Share Basic				$ 0.13	$ 0.12	$ 0.03	$ 0.08	$ 0.08	$ 0.54	$ 0.30	$ 0.64
Loss on Sale of Investments	$ (921)		$ (921)			$ (18,269)
Gain (Loss) on investments Net of tax Per Share Basic and Diluted	$ 0.01		$ 10
Restructuring Charges Net of Tax Per Share Diluted					$ 0.11		$ 0.07		$ 0.54	$ 0.29	$ 0.63
Impairment of intangible assets (excluding Goodwill), Net of Tax										$ 47,911
Gain on sale of investment									$ 2,008	$ 18,269	$ 0
Gain (Loss) on investments Net of tax Per Share Basic									$ 0.19	$ 0.19
GaIn (Loss) on Investments Net of Tax Per Share Diluted									$ 0.18	0.18
Gains Losses On Extinguishment of Debt Net of Tax									$ 1,808
Extinguishment of Debt Gain Loss Net of Tax Per Share Basic and Diluted									$ 0.02
Extinguishment of Debt, Gain (Loss), Net of Tax									$ (1,808)		$ 2,627
Impairment of Intangible Assets (Excluding Goodwill), Net of Tax Per Share Basic										$ 0.49
Increase in the Provision for Income Taxes [Member]
Condensed Financial Statements, Captions [Line Items]
Non-cash impact of tax matters										$ 20,809
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic and Diluted										$ 0.20