The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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The net realized foreign currency transaction gain (loss) (pretax) included in determining net income from transactions that were settled as of the balance sheet date.

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Derivative Instruments - Financial Information Related to Hedging of Net Assets Included in Consolidated Statement of Earnings (Detail) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012 USD ($)	Sep. 29, 2012 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Oct. 01, 2011 USD ($)	Jul. 02, 2011 USD ($)	Apr. 02, 2011 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 Pound/US Dollar [Member] GBP (£)	Dec. 31, 2011 Pound/US Dollar [Member] GBP (£)	Dec. 31, 2012 Euro/US Dollar [Member] EUR (€)	Dec. 31, 2011 Euro/US Dollar [Member] EUR (€)
Derivative [Line Items]
Change in gains (losses) from foreign exchange derivatives									$ (1,347)	$ (825)	$ 5,074
Gain (loss) on net foreign currency assets									406	(1,181)	(5,243)
Net foreign exchange loss	(5)	(514)	(80)	(342)	(706)	(173)	(833)	(294)	(941)	(2,006)	(169)
Notional balance of outstanding contracts versus the dollar												3,810	6,016	37,598	36,684
Net fair value of outstanding contracts	$ 18				$ (54)				$ 18	$ (54)