Accumulated Other Comprehensive Loss - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unfavorable position amounts included in accumulated other comprehensive loss related to cash flow hedges	$ 7,206		$ 7,206		$ 9,617
Accumulated other comprehensive income loss cumulative changes in net gain loss from cash flow hedge effect after tax	4,508		4,508		5,962
Cumulative tax benefit on Cash Flow Hedges included in Accumulated Other Comprehensive Loss	2,698		2,698		3,655
Increase (decrease) in tax benefit on Cash Flow Hedges	(368)		(957)
Cumulative tax benefit on Defined Benefit Pensions	250,306		250,306		$ 256,840
Increase (decrease) in tax benefit on Defined Benefit Pensions	(3,965)		(6,534)
Foreign currency translation adjustments	(4,413)	$ (250)	(4,574)	$ (115)
Non-Controlling Interests [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments	$ (4,413)		$ (4,574)