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Commitments And Contingencies (Summary Of Product Warranty Accrual Activity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Commitments And Contingencies [Abstract]
Beginning of period	$ 18.6	$ 16.9
Additions	2.8	2.8
Usage	(2.9)	(3.0)
End of period	$ 18.5	$ 16.7

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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