Employee Retirement Plans Assets of Plans Invested in Classes of Securities (Details) - USD ($) $ in Thousands		Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		$ 14,634	$ 16,102	$ 13,589
Defined Benefit Plan, Net Asset Value of Plan Assets		$ 175	$ 486
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		100.00%
Percentage of Plan Assets		100.00%	100.00%
Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		$ 1,141,381	$ 1,296,539	$ 1,173,865
Defined Benefit Plan, Net Asset Value of Plan Assets		$ 859,993	$ 990,888
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		100.00%
Percentage of Plan Assets		100.00%	100.00%
Short Term Investment Fund | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	[1]	$ 175	$ 486
Defined Benefit Plan, Net Asset Value of Plan Assets	[1]	$ 175	$ 486
Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		48.00%
Percentage of Plan Assets		42.00%	55.00%
Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		17.00%
Percentage of Plan Assets		23.00%	26.00%
Fixed Income | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		40.00%
Percentage of Plan Assets		49.00%	35.00%
Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		38.00%
Percentage of Plan Assets		52.00%	48.00%
Money Market Instruments | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		4.00%
Percentage of Plan Assets		1.00%	3.00%
Money Market Instruments | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		32.00%
Percentage of Plan Assets		9.00%	12.00%
Other (real estate & commodities) | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		8.00%
Percentage of Plan Assets		8.00%	7.00%
Other (real estate & commodities) | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		13.00%
Percentage of Plan Assets		14.00%	11.00%
Cash and Cash Equivalents | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		0.00%
Percentage of Plan Assets		2.00%	3.00%
Equity Securities, U K Market | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		$ 155,687	$ 178,093
Defined Benefit Plan, Net Asset Value of Plan Assets		76,749	79,685
Equity Securities, International, Developed | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		99,872	145,295
Defined Benefit Plan, Net Asset Value of Plan Assets		85,375	128,668
Equity Securities, international, Emerging | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		7,488	7,261
Defined Benefit Plan, Net Asset Value of Plan Assets		6,897	6,876
Equity Securities, Unquoted Private Equity | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		1,752	3,687
Defined Benefit Plan, Net Asset Value of Plan Assets		1,752	3,687
Cash and Cash Equivalents | Short Term Investment Fund | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		28,434	42,857
Defined Benefit Plan, Net Asset Value of Plan Assets		21,453	18,871
U S Large Cap | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		2,615	3,485
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
U S Mid Cap | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		329	474
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
U S Small Cap | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		326	475
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
International Equity Securities | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		2,937	4,507
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
Government/Corporate | Fixed Income | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		5,994	4,744
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
High Yield Fixed Income | Fixed Income | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		1,102	809
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
Real Estate Funds | Alternative Investment [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		591	469
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
Commodities Contracts | Leveraged Loans | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		18,295	30,755
Defined Benefit Plan, Net Asset Value of Plan Assets		18,295	30,755
Commodities Contracts | Alternative Investment [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		565	653
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
Commodities Contracts | Alternative Investment [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		(137,952)	(131,387)
Defined Benefit Plan, Net Asset Value of Plan Assets		(138,043)	(131,484)
Real Estate Funds, Direct | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		148,551	135,238
Defined Benefit Plan, Net Asset Value of Plan Assets		0	0
Real Estate Funds,Indirect | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		10,812	11,128
Defined Benefit Plan, Net Asset Value of Plan Assets		1,326	10,937
Fixed Income, Government/Corporate, U K | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		468,608	347,840
Defined Benefit Plan, Net Asset Value of Plan Assets		449,969	321,176
Fixed Income, Government/Corporate, International | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		75,980	46,065
Defined Benefit Plan, Net Asset Value of Plan Assets		75,980	46,065
Fixed Income, Government/Corporate, Index Linked | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		47,873	228,699
Defined Benefit Plan, Net Asset Value of Plan Assets		44,259	224,644
Fixed Income, Government/Corporate, Other | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		650	3,750
Defined Benefit Plan, Net Asset Value of Plan Assets		650	3,750
Fixed Income,Convertible Bonds | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		188	187
Defined Benefit Plan, Net Asset Value of Plan Assets		188	187
Hedge Funds, Equity | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		73,783	79,035
Defined Benefit Plan, Net Asset Value of Plan Assets		73,783	79,035
Hedge Fund, Arbitrage&Event | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		73,261	83,814
Defined Benefit Plan, Net Asset Value of Plan Assets		73,261	83,814
Hedge Fund, Directional Trading&Fixed Income | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		44,091	34,107
Defined Benefit Plan, Net Asset Value of Plan Assets		44,091	34,107
Hedge Fund, Cash & Other | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		21,719	48,440
Defined Benefit Plan, Net Asset Value of Plan Assets		21,719	48,440
Hedge Fund, Direct Sourcing | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		2,289	1,675
Defined Benefit Plan, Net Asset Value of Plan Assets		2,289	1,675
Fair Value, Inputs, Level 1 | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		14,459	15,616
Fair Value, Inputs, Level 1 | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		114,018	140,044
Fair Value, Inputs, Level 1 | Short Term Investment Fund | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	[1]	0	0
Fair Value, Inputs, Level 1 | Equity Securities, U K Market | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		78,938	98,408
Fair Value, Inputs, Level 1 | Equity Securities, International, Developed | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		14,497	16,627
Fair Value, Inputs, Level 1 | Equity Securities, international, Emerging | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		591	385
Fair Value, Inputs, Level 1 | Equity Securities, Unquoted Private Equity | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Cash and Cash Equivalents | Short Term Investment Fund | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		4,325	8,135
Fair Value, Inputs, Level 1 | U S Large Cap | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		2,615	3,485
Fair Value, Inputs, Level 1 | U S Mid Cap | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		329	474
Fair Value, Inputs, Level 1 | U S Small Cap | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		326	475
Fair Value, Inputs, Level 1 | International Equity Securities | Equity Securities | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		2,937	4,507
Fair Value, Inputs, Level 1 | Government/Corporate | Fixed Income | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		5,994	4,744
Fair Value, Inputs, Level 1 | High Yield Fixed Income | Fixed Income | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		1,102	809
Fair Value, Inputs, Level 1 | Real Estate Funds | Alternative Investment [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		591	469
Fair Value, Inputs, Level 1 | Commodities Contracts | Leveraged Loans | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Commodities Contracts | Alternative Investment [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		565	653
Fair Value, Inputs, Level 1 | Commodities Contracts | Alternative Investment [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		5	(4)
Fair Value, Inputs, Level 1 | Real Estate Funds, Direct | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Real Estate Funds,Indirect | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		188	191
Fair Value, Inputs, Level 1 | Fixed Income, Government/Corporate, U K | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		11,860	12,247
Fair Value, Inputs, Level 1 | Fixed Income, Government/Corporate, International | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Fixed Income, Government/Corporate, Index Linked | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		3,614	4,055
Fair Value, Inputs, Level 1 | Fixed Income, Government/Corporate, Other | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Fixed Income,Convertible Bonds | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Hedge Funds, Equity | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Hedge Fund, Arbitrage&Event | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Hedge Fund, Directional Trading&Fixed Income | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Hedge Fund, Cash & Other | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 1 | Hedge Fund, Direct Sourcing | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		167,284	165,506
Fair Value, Inputs, Level 2 | Equity Securities, U K Market | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Equity Securities, International, Developed | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Equity Securities, international, Emerging | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Equity Securities, Unquoted Private Equity | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Cash and Cash Equivalents | Short Term Investment Fund | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		2,656	15,851
Fair Value, Inputs, Level 2 | Commodities Contracts | Leveraged Loans | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Commodities Contracts | Alternative Investment [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Real Estate Funds, Direct | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		148,551	135,238
Fair Value, Inputs, Level 2 | Real Estate Funds,Indirect | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		9,298	0
Fair Value, Inputs, Level 2 | Fixed Income, Government/Corporate, U K | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		6,779	14,417
Fair Value, Inputs, Level 2 | Fixed Income, Government/Corporate, International | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Fixed Income, Government/Corporate, Index Linked | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Fixed Income, Government/Corporate, Other | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Fixed Income,Convertible Bonds | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Hedge Funds, Equity | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Hedge Fund, Arbitrage&Event | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Hedge Fund, Directional Trading&Fixed Income | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Hedge Fund, Cash & Other | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 2 | Hedge Fund, Direct Sourcing | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		86	101
Fair Value, Inputs, Level 3 | Equity Securities, U K Market | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Equity Securities, International, Developed | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Equity Securities, international, Emerging | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Equity Securities, Unquoted Private Equity | Equity Securities | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Cash and Cash Equivalents | Short Term Investment Fund | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Commodities Contracts | Leveraged Loans | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Commodities Contracts | Alternative Investment [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		86	101
Fair Value, Inputs, Level 3 | Real Estate Funds, Direct | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Real Estate Funds,Indirect | Real Estate Funds | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Fixed Income, Government/Corporate, U K | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Fixed Income, Government/Corporate, International | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Fixed Income, Government/Corporate, Index Linked | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Fixed Income, Government/Corporate, Other | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Fixed Income,Convertible Bonds | Fixed Income | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Hedge Funds, Equity | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Hedge Fund, Arbitrage&Event | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Hedge Fund, Directional Trading&Fixed Income | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Hedge Fund, Cash & Other | Hedge Funds, Multi-strategy | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fair Value, Inputs, Level 3 | Hedge Fund, Direct Sourcing | Hedge Funds, Multi-strategy | Non US Plans
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.