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Retirement Plans - Changes in Company's Assets and Related Obligations for its Pension Plans (Parenthetical) (Detail) - USD ($) $ in Millions | Jan. 02, 2016 | Jan. 03, 2015
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Compensation and Retirement Disclosure [Abstract] |  |
Unrecognized net actuarial loss amount net of tax | $ (12.7) | $ (41.5)
Unrecognized prior service cost amount net of tax | $ (0.1) | $ (0.1)

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- References No definition available. + Details
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- Definition After tax net amount of gain (loss) that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases (decreases) in other comprehensive income as they arise. + References No definition available. + Details
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- Definition Amount after tax of cost (credit) due to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as a component of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=49177896 + Details
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