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																12 Months Ended
	Dec. 31, 2012		Sep. 30, 2012		Jul. 01, 2012		Apr. 01, 2012		Dec. 31, 2011		Sep. 25, 2011		Jun. 26, 2011		Mar. 27, 2011		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting, Other Significant Reconciling Item [Line Items]
Segment operating profit																	$ 237,458	[1]	$ 236,157	[1]	$ 232,824	[1]
Goodwill impairment							(332,100)										(332,128)
Restructuring and other impairment charges																	(3,037)		(6,005)		(2,875)
Net gain (loss) on sales of businesses and assets																	332		(582)		341
Income (loss) from continuing operations before interest, loss on extinguishments of debt and taxes	58,440	[2]	49,841	[2]	64,722	[2],[3]	(270,378)	[2],[3],[4]	63,072	[2]	61,905	[2]	55,882	[2],[3]	48,711	[2],[3],[4]	(97,375)		229,570		230,290
Expenditures for property, plant and equipment																	65,394		44,582		29,330
Segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for property, plant and equipment																	58,042		41,415		27,907
Corporate
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for property, plant and equipment																	$ 7,352		$ 3,167		$ 1,423

[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, net (gain) loss on sales of businesses and assets, interest income and expense, loss on extinguishment of debt and taxes on income.

[2] Amounts reflect the retrospective impact of reporting the orthopedic business as discontinued operations. See Note 19.

[3] The Company identified $0.1 million and $0.4 million, net of tax, of environmental costs related to discontinued operations that were erroneously reported in continuing operations during the first and second quarters of 2011, respectively, which did not change diluted earnings per share for the first quarter and increased diluted earnings per share by $0.01 for the second quarter. The Company has classified these environmental costs as income from discontinued operations. Management has determined that the impact of this error was not material on a quantitative or qualitative basis to the financial statements for the first and second quarters of fiscal 2011.

[4] Amounts include a pretax goodwill impairment charge of $332.1 million, or $315.1 million net of tax. See Note 5.