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Postretirement Plans (Summary of Amounts Included In Accumulated Other Comprehensive Income On Accompanying Consolidated Balance Sheets As Of Year End 2012 And 2011) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss), net of tax	$ (260.4)	$ (268.0)
U.S. Postretirement Health Care Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss), net of tax	$ 0.8	$ (0.4)

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- Definition

Pension and other postretirement benefit plans, accumulated other comprehensive income (loss), net gains (losses), net of tax

+ References

No definition available.

+ Details

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Period Type:	instant

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- Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration