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Pension Plans (Summary Of Fair Value By Asset Category And Level Within Fair Value Hierarchy) (Detail) (USD $) In Millions, unless otherwise specified | Dec. 29, 2012 | Dec. 31, 2011 | Jan. 01, 2011
--- | --- | --- | ---
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | $ 964.0 | $ 846.1 | $ 793.0
Domestic Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 830.6 | 720.8 |
Domestic Pension Plans [Member] | Cash And Cash Equivalents [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 25.5 | 9.2 |
Domestic Pension Plans [Member] | Domestic Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 108.5 | 150.7 |
Domestic Pension Plans [Member] | Commingled Funds Domestic Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 172.2 |  |
Domestic Pension Plans [Member] | Commingled Funds - Foreign Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 64.8 | 112.3 |
Domestic Pension Plans [Member] | Private Equity Partnerships Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 49.6 | 49.9 |
Domestic Pension Plans [Member] | Government Debt Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 91.9 | 81.0 |
Domestic Pension Plans [Member] | Corporate Debt Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 192.5 | 160.4 |
Domestic Pension Plans [Member] | Real Estate And Other Real Assets [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 50.6 | 43.1 |
Domestic Pension Plans [Member] | Hedge Funds [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 75.0 | 68.6 |
Domestic Pension Plans [Member] | Foreign Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets |  | 17.7 |
Domestic Pension Plans [Member] | Commingled Funds Debt Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets |  | 27.9 |
Foreign Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 133.4 | 125.3 |
Foreign Pension Plans [Member] | Cash And Cash Equivalents [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 3.9 | 11.2 |
Foreign Pension Plans [Member] | Hedge Funds [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 20.0 | 16.5 |
Foreign Pension Plans [Member] | Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 11.6 | 10.1 |
Foreign Pension Plans [Member] | Commingled Funds - Multi-Strategy [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 94.1 | 83.4 |
Foreign Pension Plans [Member] | Insurance Contracts [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 3.8 | 4.1 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 430.0 | 434.6 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Cash And Cash Equivalents [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 25.5 | 9.2 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Domestic Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 108.5 | 150.7 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Government Debt Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 91.9 | 81.0 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Corporate Debt Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 192.5 | 160.4 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Real Estate And Other Real Assets [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 11.6 | 9.2 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Foreign Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets |  | 17.7 |
Quoted Prices For Identical Assets (Level 1) [Member] | Domestic Pension Plans [Member] | Commingled Funds Debt Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets |  | 6.4 |
Quoted Prices For Identical Assets (Level 1) [Member] | Foreign Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 15.5 | 21.3 |
Quoted Prices For Identical Assets (Level 1) [Member] | Foreign Pension Plans [Member] | Cash And Cash Equivalents [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 3.9 | 11.2 |
Quoted Prices For Identical Assets (Level 1) [Member] | Foreign Pension Plans [Member] | Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 11.6 | 10.1 |
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 237.0 | 133.8 |
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] | Commingled Funds Domestic Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 172.2 |  |
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] | Commingled Funds - Foreign Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 64.8 | 112.3 |
Significant Other Observable Inputs (Level 2) [Member] | Domestic Pension Plans [Member] | Commingled Funds Debt Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets |  | 21.5 |
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 97.9 | 87.5 |
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Plans [Member] | Commingled Funds - Multi-Strategy [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 94.1 | 83.4 |
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Plans [Member] | Insurance Contracts [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 3.8 | 4.1 |
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 163.6 | 152.4 |
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member] | Private Equity Partnerships Equity Securities [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 49.6 | 49.9 |
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member] | Real Estate And Other Real Assets [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 39.0 | 33.9 |
Significant Unobservable Inputs (Level 3) [Member] | Domestic Pension Plans [Member] | Hedge Funds [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 75.0 | 68.6 |
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Plans [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | 20.0 | 16.5 |
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Plans [Member] | Hedge Funds [Member] |  |  |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] |  |  |
Fair value of plan assets | $ 20.0 | $ 16.5 |

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- Definition 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=6867990&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: 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=21915506&loc=d3e1928-114920 + Details
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