Reconciliation of Segment Operating Profit to Income (Loss) from Continuing Operations before Interest, Loss on Extinguishment of Debt and Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jul. 01, 2012		Jun. 30, 2013		Jul. 01, 2012
Segment Reporting, Other Significant Reconciling Item [Line Items]
Goodwill impairment			$ (332,000)				$ (332,128)
Restructuring and other impairment charges	(12,962)		(321)		(22,121)		1,004
Gain on sales of businesses and assets			332				332
Income (loss) from continuing operations before interest, loss on extinguishments of debt and taxes	63,751		64,722		113,155		(205,656)
Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Restructuring and other impairment charges	(12,962)		(321)		(22,121)		1,004
Income (loss) from continuing operations before interest, loss on extinguishments of debt and taxes	$ 76,713	[1]	$ 64,711	[1]	$ 135,276	[1]	$ 125,136	[1]

[1] Segment operating profit includes a segment's net revenues from external customers reduced by its cost of goods sold, selling, general and administrative expenses, research and development expenses and an allocation of corporate expenses. Segment operating profit excludes goodwill impairment charges, restructuring and impairment charges, interest income and expense and taxes on income.