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Pension Plans - Summary of Fair Value by Asset Category and Within Fair Value Hierarchy (Detail) - USD ($) $ in Millions	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,049.2	$ 1,103.4	$ 1,015.4
Domestic Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	892.3	939.4
Domestic Pension Plans [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	21.3	26.9
Domestic Pension Plans [Member] | Domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	53.9	57.5
Domestic Pension Plans [Member] | Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	61.7	67.5
Domestic Pension Plans [Member] | Commingled funds - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	169.3	171.1
Domestic Pension Plans [Member] | Commingled funds - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	110.0	111.5
Domestic Pension Plans [Member] | Private equity partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	43.7	47.4
Domestic Pension Plans [Member] | Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	133.0	138.2
Domestic Pension Plans [Member] | Corporate bond [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	195.8	197.0
Domestic Pension Plans [Member] | Real estate and other real assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.4	30.8
Domestic Pension Plans [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	86.2	91.5
Foreign Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	156.9	164.0
Foreign Pension Plans [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.8
Foreign Pension Plans [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.9	18.1
Foreign Pension Plans [Member] | Commingled funds - multi-strategy [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	119.0	121.7
Foreign Pension Plans [Member] | Insurance contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.8	23.4
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	269.9	290.1
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	21.3	26.9
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	53.9	57.5
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	61.7	67.5
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	133.0	138.2
Quoted Prices For Identical Assets (Level 1) [Member] | Foreign Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.8
Quoted Prices For Identical Assets (Level 1) [Member] | Foreign Pension Plans [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.8
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	475.1	479.6
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] | Commingled funds - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	169.3	171.1
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] | Commingled funds - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	110.0	111.5
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] | Corporate bond [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	195.8	197.0
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	138.8	145.1
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Plans [Member] | Commingled funds - multi-strategy [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	119.0	121.7
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Plans [Member] | Insurance contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.8	23.4
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	147.3	169.7
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member] | Private equity partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	43.7	47.4
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member] | Real estate and other real assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.4	30.8
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	86.2	91.5
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.9	18.1
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Plans [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 17.9	$ 18.1

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+ References

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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