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Quarterly Information (Schedule of Quarterly Information) (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011
Quarterly Financial Information [Line Items]
LIFO charges	$ (71.9)	$ (84.0)	$ (14.5)	$ 14.5	$ 51.8	$ 28.0	$ 32.0	$ 31.0
Purchase Accounting Adjustments	12.0	28.2	8.6
Impairment of equity method investments			30.0			13.9
Loss on sale of Assets		(17.6)
Gain related to correction of error in the actuarial calculation					$ 29.0

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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