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Employee Retirement Plans Summary of the Basis Used to Measure Pension Plans' Assets at Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
USPlans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets $ 13,589 $ 12,987 $ 13,575
Defined Benefit Plan, Net Asset Value of Plan Assets 368 540  
Non US Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 1,173,865 1,287,723 $ 15,306
Defined Benefit Plan, Net Asset Value of Plan Assets 1,009,160 1,098,910  
Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Funds, Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 61,612 80,230  
Defined Benefit Plan, Net Asset Value of Plan Assets 61,612 80,230  
Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Arbitrage&Event [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 64,961 92,635  
Defined Benefit Plan, Net Asset Value of Plan Assets 64,961 92,635  
Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Directional Trading&Fixed Income [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 30,430 55,424  
Defined Benefit Plan, Net Asset Value of Plan Assets 30,430 55,424  
Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Cash & Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 38,099 2,557  
Defined Benefit Plan, Net Asset Value of Plan Assets 38,099 2,557  
Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Direct Sourcing [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 1,379 1,655  
Defined Benefit Plan, Net Asset Value of Plan Assets 1,379 1,655  
Leveraged Loans [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 11,025 10,824  
Defined Benefit Plan, Net Asset Value of Plan Assets 11,025 10,824  
Short Term Investment Fund [Member] | USPlans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets [1] 368 540  
Defined Benefit Plan, Net Asset Value of Plan Assets 368 540  
Short Term Investment Fund [Member] | Non US Plans [Member] | Cash and Cash Equivalents [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 58,131 73,006  
Defined Benefit Plan, Net Asset Value of Plan Assets 50,515 65,781  
Equity Securities [Member] | USPlans [Member] | U S Large Cap [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 3,055 3,149  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Equity Securities [Member] | USPlans [Member] | U S Mid Cap [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 512 383  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Equity Securities [Member] | USPlans [Member] | U S Small Cap [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 455 383  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Equity Securities [Member] | USPlans [Member] | International Equity Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 2,917 2,291  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Equity Securities [Member] | Non US Plans [Member] | Equity Securities, U K Market [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 87,828 91,269  
Defined Benefit Plan, Net Asset Value of Plan Assets 85,730 88,510  
Equity Securities [Member] | Non US Plans [Member] | Equity Securities, International, Developed [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 135,186 147,277  
Defined Benefit Plan, Net Asset Value of Plan Assets 131,639 141,569  
Equity Securities [Member] | Non US Plans [Member] | Equity Securities, Unquoted Private Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 3,189 759  
Defined Benefit Plan, Net Asset Value of Plan Assets 3,189 759  
Equity Securities [Member] | Non US Plans [Member] | Equity Securities, international, Emerging [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 6,803 6,375  
Defined Benefit Plan, Net Asset Value of Plan Assets 6,724 6,298  
Fixed Income [Member] | USPlans [Member] | Government/Corporate [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 4,367 4,311  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Fixed Income [Member] | USPlans [Member] | High Yield Fixed Income [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 971 778  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 3,812 3,518  
Defined Benefit Plan, Net Asset Value of Plan Assets 3,812 3,518  
Fixed Income [Member] | Non US Plans [Member] | Fixed Income,Convertible Bonds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 160 1,471  
Defined Benefit Plan, Net Asset Value of Plan Assets 160 1,471  
Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Index Linked [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 212,327 258,502  
Defined Benefit Plan, Net Asset Value of Plan Assets 208,122 258,502  
Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 107,882 126,735  
Defined Benefit Plan, Net Asset Value of Plan Assets 107,779 125,689  
Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, U K [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 317,621 168,706  
Defined Benefit Plan, Net Asset Value of Plan Assets 292,409 137,938  
Alternative Investment [Member] | USPlans [Member] | Real Estate Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 539 771  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Alternative Investment [Member] | USPlans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 405 381  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Alternative Investment [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets (98,885) 12,398  
Defined Benefit Plan, Net Asset Value of Plan Assets (98,980) 12,110  
Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds, Direct [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 121,612 140,765  
Defined Benefit Plan, Net Asset Value of Plan Assets 0 0  
Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds,Indirect [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 10,693 13,617  
Defined Benefit Plan, Net Asset Value of Plan Assets 10,555 13,440  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | USPlans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 13,221 12,447  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Non US Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 26,000 21,154  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Funds, Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Arbitrage&Event [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Directional Trading&Fixed Income [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Cash & Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Direct Sourcing [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Leveraged Loans [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Short Term Investment Fund [Member] | USPlans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets [1] 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Short Term Investment Fund [Member] | Non US Plans [Member] | Cash and Cash Equivalents [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 4,730 3,937  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | USPlans [Member] | U S Large Cap [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 3,055 3,149  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | USPlans [Member] | U S Mid Cap [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 512 383  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | USPlans [Member] | U S Small Cap [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 455 383  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | USPlans [Member] | International Equity Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 2,917 2,291  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, U K Market [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 2,098 2,565  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, International, Developed [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 3,547 3,294  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, Unquoted Private Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, international, Emerging [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 79 77  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | USPlans [Member] | Government/Corporate [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 4,367 4,311  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | USPlans [Member] | High Yield Fixed Income [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 971 778  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income,Convertible Bonds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Index Linked [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 4,205 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, U K [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 11,203 10,816  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Alternative Investment [Member] | USPlans [Member] | Real Estate Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 539 771  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Alternative Investment [Member] | USPlans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 405 381  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Alternative Investment [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 288  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds, Direct [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds,Indirect [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 138 177  
Fair Value, Inputs, Level 2 [Member] | Non US Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 138,610 167,659  
Fair Value, Inputs, Level 2 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Funds, Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Arbitrage&Event [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Directional Trading&Fixed Income [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Cash & Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Direct Sourcing [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Leveraged Loans [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Short Term Investment Fund [Member] | Non US Plans [Member] | Cash and Cash Equivalents [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 2,886 3,288  
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, U K Market [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 194  
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, International, Developed [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 2,414  
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, Unquoted Private Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, international, Emerging [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income,Convertible Bonds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Index Linked [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 103 1,046  
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, U K [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 14,009 19,952  
Fair Value, Inputs, Level 2 [Member] | Alternative Investment [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds, Direct [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 121,612 140,765  
Fair Value, Inputs, Level 2 [Member] | Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds,Indirect [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Non US Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 95 0  
Fair Value, Inputs, Level 3 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Funds, Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Arbitrage&Event [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Directional Trading&Fixed Income [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Cash & Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Hedge Funds, Multi-strategy [Member] | Non US Plans [Member] | Hedge Fund, Direct Sourcing [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Leveraged Loans [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Short Term Investment Fund [Member] | Non US Plans [Member] | Cash and Cash Equivalents [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, U K Market [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, International, Developed [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, Unquoted Private Equity [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Non US Plans [Member] | Equity Securities, international, Emerging [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income,Convertible Bonds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, Index Linked [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Fixed Income [Member] | Non US Plans [Member] | Fixed Income, Government/Corporate, U K [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Alternative Investment [Member] | Non US Plans [Member] | Commodities Investment [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 95 0  
Fair Value, Inputs, Level 3 [Member] | Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds, Direct [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 3 [Member] | Real Estate Funds [Member] | Non US Plans [Member] | Real Estate Funds,Indirect [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets $ 0 $ 0  
[1] Represents collective short term investment fund, composed of high-grade money market instruments with short maturities.