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Financial Instruments (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jul. 01, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Amount deferred in accumulated other comprehensive loss associated with this interest rate swap, net of tax	$ 2.3
Interest rate swap, notional amount designated as a hedge		350
Amount in accumulated other comprehensive income, reclassified as expense to the statement of income	$ 3.0

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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