Supplemental Financial Information - Accumulated Other Comprehensive Loss, Net of Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Supplemental Financial Information [Abstract]
Foreign currency translation adjustments, Beginning Balance	$ 39,881
Net unrealized gain on investments, Beginning Balance	4,484
Net unrealized gain on derivatives, Beginning Balance	224
Defined benefit pension and post-retirement plans, Beginning Balance	(622,919)
Total accumulated other comprehensive loss, Beginning Balance	(578,330)
Foreign currency translation adjustments, Other Comprehensive Income before Reclassifications	(342)
Net unrealized gain on investments, Other Comprehensive Income before Reclassifications	1,240
Net unrealized gain on derivatives, Other Comprehensive Income before Reclassifications	(32)
Defined benefit pension and post-retirement plans, Other Comprehensive Income before Reclassifications
Total accumulated other comprehensive loss, Other Comprehensive Income before Reclassifications	866
Foreign currency translation adjustments, Amounts Reclassified from Accumulated Other Comprehensive Loss
Net unrealized gain on investments, Amounts Reclassified from Accumulated Other Comprehensive Loss	17
Net unrealized gain on derivatives, Amounts Reclassified from Accumulated Other Comprehensive Loss	(162)
Defined benefit pension and post-retirement plans, Amounts Reclassified from Accumulated Other Comprehensive Loss	5,044
Total accumulated other comprehensive loss, Amounts Reclassified from Accumulated Other Comprehensive Loss	4,899
Foreign currency translation adjustments, Net Current Period Other Comprehensive Income	(342)
Net unrealized gain on investments, Net Current Period Other Comprehensive Income	1,257
Net unrealized gain on derivatives, Net Current Period Other Comprehensive Income	(194)
Defined benefit pension and post-retirement plans, Net Current Period Other Comprehensive Income	5,044
Other comprehensive income, net of tax	5,765	6,925
Foreign currency translation adjustments, Ending Balance	39,539
Net unrealized gain on investments, Ending Balance	5,741
Net unrealized gain on derivatives, Ending Balance	30
Defined benefit pension and post-retirement plans, Ending Balance	(617,875)
Total accumulated other comprehensive loss, Ending Balance	$ (572,565)