Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	[1]			$ 1,532,873
Amounts reclassified from accumulated other comprehensive loss				48
Other comprehensive income/(loss)		$ 3,283	$ (48,543)	30,298	$ (101,397)
Ending Balance		1,589,637		1,589,637
Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(5,152)	(5,962)
Other comprehensive income/(loss) before reclassifications				1,318	(7,181)
Amounts reclassified from accumulated other comprehensive loss				3,897	8,872
Other comprehensive income/(loss)				5,263	1,454
Ending Balance		111	(4,508)	111	(4,508)
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(444,244)	(475,286)
Other comprehensive income/(loss) before reclassifications				(5,020)	(8,239)
Amounts reclassified from accumulated other comprehensive loss				19,773	20,154
Other comprehensive income/(loss)				14,753	11,915
Ending Balance		(429,491)	(463,371)	(429,491)	(463,371)
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(253,137)	(127,603)
Other comprehensive income/(loss) before reclassifications				10,282	(114,766)
Other comprehensive income/(loss)				10,282	(114,766)
Ending Balance		(242,855)	(242,369)	(242,855)	(242,369)
Net Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(702,533)	(608,851)
Other comprehensive income/(loss) before reclassifications				6,580	(130,186)
Amounts reclassified from accumulated other comprehensive loss				23,670	29,026
Other comprehensive income/(loss)				30,298	(101,397)
Ending Balance		$ (672,235)	$ (710,248)	(672,235)	(710,248)
Fixed Assets | Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss				48	(237)
Fixed Assets | Net Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss				$ 48	$ (237)

[1] The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America.