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Pension Plans - Summary of Fair Value by Asset Category and Within Fair Value Hierarchy (Detail) - USD ($) $ in Millions | Dec. 31, 2016 | Jan. 02, 2016 | Jan. 03, 2015
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,110.8 | $ 1,049.2 | $ 1,103.4
Domestic Pension Plans [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 441.3 | 426.6 |
Domestic Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 957.1 | 892.3 |
Domestic Pension Plans [Member] | Cash and cash equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 20.4 | 21.3 |
Domestic Pension Plans [Member] | Domestic [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 66.0 | 53.9 |
Domestic Pension Plans [Member] | Foreign [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 74.7 | 61.7 |
Domestic Pension Plans [Member] | Commingled funds - domestic [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 191.3 | 169.3 |
Domestic Pension Plans [Member] | Commingled funds - domestic [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 191.3 | 169.3 |
Domestic Pension Plans [Member] | Commingled funds - foreign [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 117.7 | 110.0 |
Domestic Pension Plans [Member] | Commingled funds - foreign [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 117.7 | 110.0 |
Domestic Pension Plans [Member] | Private Equity Partnerships [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 34.2 | 43.7 |
Domestic Pension Plans [Member] | Private Equity Partnerships [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 34.2 | 43.7 |
Domestic Pension Plans [Member] | Government [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 140.1 | 133.0 |
Domestic Pension Plans [Member] | Corporate bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 214.6 | 195.8 |
Domestic Pension Plans [Member] | Real estate and other real assets [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 10.4 | 17.4 |
Domestic Pension Plans [Member] | Real estate and other real assets [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 10.4 | 17.4 |
Domestic Pension Plans [Member] | Hedge Funds [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 87.7 | 86.2 |
Domestic Pension Plans [Member] | Hedge Funds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 87.7 | 86.2 |
Foreign Pension Plans [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 131.7 | 136.9 |
Foreign Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 153.7 | 156.9 |
Foreign Pension Plans [Member] | Cash and cash equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0.7 | 0.2 |
Foreign Pension Plans [Member] | Hedge Funds [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14.3 | 17.9 |
Foreign Pension Plans [Member] | Hedge Funds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14.3 | 17.9 |
Foreign Pension Plans [Member] | Commingled funds - multi-strategy [Member] | Investments Measured at NAV [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 117.4 | 119.0 |
Foreign Pension Plans [Member] | Commingled funds - multi-strategy [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 117.4 | 119.0 |
Foreign Pension Plans [Member] | Insurance contracts [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 21.3 | 19.8 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 300.3 | 269.9 |
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 | 20.4 | 21.3 |
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 | 66.0 | 53.9 |
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 | 74.7 | 61.7 |
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 | 139.2 | 133.0 |
Quoted Prices For Identical Assets (Level 1) [Member] | Foreign Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0.7 | 0.2 |
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 | 0.7 | 0.2 |
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 215.5 | 195.8 |
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] | Government [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0.9 |  |
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 | 214.6 | 195.8 |
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 21.3 | 19.8 |
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 | $ 21.3 | $ 19.8 |

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