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Postretirement Plans - Summary of Amounts Included in Accumulated Other Comprehensive Income on Accompanying Consolidated Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss), net of tax	$ (175.4)	$ (260.4)
U.S. Postretirement Health Care Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss), net of tax	$ 4.2	$ 0.8

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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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- Details

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