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Postretirement Plans - Summary of Amounts Included in Accumulated Other Comprehensive Income on Accompanying Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Jan. 02, 2016	Jan. 03, 2015
U.S. Postretirement Health Care Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss), net of tax	$ 4.5	$ 2.4

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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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Details

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