Pension and Other Postretirement Benefits - Asset Categories Based on the Nature and Risks of the Plan Assets (Detail) £ in Thousands, $ in Thousands	Dec. 31, 2021 USD ($)	Dec. 31, 2021 GBP (£)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 GBP (£)	Dec. 31, 2019 USD ($)
Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	$ 71,614	£ 53,008	$ 66,957	£ 49,056
Defined Benefit Pension Plan [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	214,937		210,880		$ 195,667
Defined Benefit Pension Plan [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	71,614		66,957		57,900
Defined Benefit Pension Plan [Member] | Equity Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	115,308		109,532
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	6,442		6,012
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Consumer Staples [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	3,050		2,591
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Energy [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,167		569
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	4,617		3,199
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	10,526		9,831
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,089		7,026
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	11,819		11,450
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	938		736
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	58,440		52,101
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Real Estate [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	824		1,180
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Telecommunications [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	2,388		2,343
Defined Benefit Pension Plan [Member] | Equity Securities, U.S., Utilities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	146		325
Defined Benefit Pension Plan [Member] | Equity Securities, International, Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	426		1,070
Defined Benefit Pension Plan [Member] | Equity Securities, International, Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	751		2,252
Defined Benefit Pension Plan [Member] | Equity Securities, International, Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	880		1,107
Defined Benefit Pension Plan [Member] | Equity Securities, International, Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,410		2,113
Defined Benefit Pension Plan [Member] | Equity Securities, International, Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	2,065		1,743
Defined Benefit Pension Plan [Member] | Equity Securities, International, Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,330		987
Defined Benefit Pension Plan [Member] | Defined Benefit Plan Equity Securities International Consumer Staples | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			2,478
Defined Benefit Pension Plan [Member] | Defined Benefit Plan Equity Securities International Energy | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			419
Defined Benefit Pension Plan [Member] | Fixed Income Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	81,987		81,651
Defined Benefit Pension Plan [Member] | Fixed Income Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	41,798		32,001
Defined Benefit Pension Plan [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	41,991
Defined Benefit Pension Plan [Member] | Fixed Income Securities, Treasury Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	28,694		24,967
Defined Benefit Pension Plan [Member] | Fixed Income Securities, Agency Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	257		624
Defined Benefit Pension Plan [Member] | Fixed Income Securities, Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	7,334		7,794
Defined Benefit Pension Plan [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	3,711		2,699
Defined Benefit Pension Plan [Member] | Fixed Income Securities Corporate Bonds | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			45,567
Defined Benefit Pension Plan [Member] | Fixed-Income Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	16,320		17,883
Defined Benefit Pension Plan [Member] | Fixed-Income Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	25,478		14,118
Defined Benefit Pension Plan [Member] | Alternative Investments [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,167		7,557
Defined Benefit Pension Plan [Member] | Alternative Investments, Managed Funds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,167		7,557
Defined Benefit Pension Plan [Member] | Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,475		12,140
Defined Benefit Pension Plan [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,349		12,142
Defined Benefit Pension Plan [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,445		4,467
Defined Benefit Pension Plan [Member] | Other, Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	126		(2)
Defined Benefit Pension Plan [Member] | Equity Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	10,947		23,014
Defined Benefit Pension Plan [Member] | Equity Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,079		2,925
Defined Benefit Pension Plan [Member] | Equity Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,868		20,089
Defined Benefit Pension Plan [Member] | Alternative Investments, Absolute Return Funds [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,347		3,094
Defined Benefit Pension Plan [Member] | Multi Asset Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,077		4,381
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	160,761		154,523
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		73
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	115,308		109,532
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	6,442		6,012
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Consumer Staples [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	3,050		2,591
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Energy [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,167		569
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	4,617		3,199
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	10,526		9,831
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,089		7,026
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	11,819		11,450
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	938		736
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	58,440		52,101
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Real Estate [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	824		1,180
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Telecommunications [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	2,388		2,343
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, U.S., Utilities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	146		325
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, International, Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	426		1,070
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, International, Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	751		2,252
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, International, Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	880		1,107
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, International, Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,410		2,113
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, International, Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	2,065		1,743
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, International, Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,330		987
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Plan Equity Securities International Consumer Staples | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			2,478
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Plan Equity Securities International Energy | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			419
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	36,028		32,761
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities, Treasury Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	28,694		24,967
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities, Agency Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities, Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	7,334		7,794
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities Corporate Bonds | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed-Income Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed-Income Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Alternative Investments [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Alternative Investments, Managed Funds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,425		12,230
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,349		12,142
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		73
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Other, Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	76		88
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Equity Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Alternative Investments, Absolute Return Funds [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Multi Asset Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	45,959		48,890
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	50,786		43,119
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Consumer Staples [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Energy [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Real Estate [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Telecommunications [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, U.S., Utilities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, International, Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, International, Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, International, Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, International, Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, International, Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, International, Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Plan Equity Securities International Consumer Staples | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Plan Equity Securities International Energy | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	45,959		48,890
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	31,601		32,001
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	41,991
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities, Treasury Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities, Agency Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	257		624
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities, Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	3,711		2,699
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities Corporate Bonds | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			45,567
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed-Income Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	16,320		17,883
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed-Income Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	15,281		14,118
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Alternative Investments [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Alternative Investments, Managed Funds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,445		4,394
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other, Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,663		2,343
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,663		2,343
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Alternative Investments, Absolute Return Funds [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Multi Asset Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,077		4,381
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,217		7,467
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	20,828		23,765		6,495
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Consumer Staples [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Energy [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Real Estate [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Telecommunications [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, U.S., Utilities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, International, Consumer Discretionary [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, International, Financial [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, International, Healthcare [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, International, Industrials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, International, Information Technology [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, International, Materials [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Plan Equity Securities International Consumer Staples | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Plan Equity Securities International Energy | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	10,197		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities, Treasury Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities, Agency Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities, Mutual Funds and ETFs [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities, Corporate Bonds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities Corporate Bonds | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed-Income Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed-Income Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	10,197		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Alternative Investments [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,167		7,557		$ 19,341
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Alternative Investments, Managed Funds [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,167		7,557
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	50		(90)
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other, Other [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	50		(90)
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,284		20,671
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, Commingled Funds (U.K.) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,079		2,925
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities, Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	8,205		17,746
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Alternative Investments, Absolute Return Funds [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,347		3,094
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Multi Asset Commingled Funds (International) [Member] | Foreign Defined Benefits Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	$ 0		$ 0