Pension and Other Postretirement Benefits - Asset Categories Based on the Nature and Risks of the Plan Assets (Detail) £ in Thousands, $ in Thousands	Dec. 31, 2017 USD ($)	Dec. 31, 2017 GBP (£)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 GBP (£)	Dec. 31, 2015 USD ($)
Transportation [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			$ 18
Wholesale Distribution [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			16
Fixed Income Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	$ 37,587		36,601
Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	18,884		36,601
Fixed Income Securities [Member] | Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	10,801
Fixed Income Securities [Member] | Treasury Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	6,976
Fixed Income Securities [Member] | Agency Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	926
Foreign Pension Benefits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	56,419	£ 41,820	48,055	£ 38,955
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	199,138		188,722
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | U.S. [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	199,138		188,722		$ 139,376
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	99,302		74,215
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Discretionary [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	637
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Staples [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	896
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Energy [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	427
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Financial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,362
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,192		201
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Industrial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	819
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	2,061		188
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	91,258		72,571
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Materials [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	248
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Telecommunications [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	198
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Utilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	204
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			631
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			75
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			20
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			16
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			67
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			87
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			101
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			211
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			6
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			7
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	49,838		33,830
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	12,411		44,076
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Cash and Cash Equivalents [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	11,012		27,902
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,225		16,020
Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	174		154
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	56,419		48,055		49,628
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	27,632		22,862
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	23,015		19,146
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	4,617		3,716
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	18,851		16,426
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,637		8,593
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	299		174
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Transportation [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			18
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Wholesale Distribution [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			16
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	25,860		36,601
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	18,884		36,601
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member] | Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member] | Treasury Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	6,976
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member] | Agency Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	136,176		154,738
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	99,302		74,215
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Discretionary [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	637
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Staples [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	896
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Energy [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	427
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Financial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,362
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,192		201
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Industrial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	819
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	2,061		188
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	91,258		72,571
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Materials [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	248
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Telecommunications [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	198
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Utilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	204
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			631
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			75
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			20
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			16
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			67
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			87
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			101
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			211
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			6
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			7
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	11,014		43,922
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Cash and Cash Equivalents [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	11,012		27,902
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	2		16,020
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	299		174
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	299		174
Significant Other Observable Inputs (Level 2) [Member] | Transportation [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Wholesale Distribution [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	11,727		0
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member] | Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	10,801
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member] | Treasury Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member] | Agency Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	926
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	11,901		154
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Discretionary [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Staples [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Energy [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Financial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Industrial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Materials [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Telecommunications [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Utilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	174		154
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Cash and Cash Equivalents [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	174		154
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	46,483		39,288
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	27,632		22,862
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	23,015		19,146
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	4,617		3,716
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	18,851		16,426
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Transportation [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Wholesale Distribution [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member] | Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member] | Treasury Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member] | Agency Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	51,061		33,830
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | U.S. [Member] | Hedge and Absolute Return Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0		4,967
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | U.S. [Member] | Managed Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	49,838		33,830		32,210
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Discretionary [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Consumer Staples [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Energy [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Financial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Industrial [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Materials [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Telecommunications [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Utilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Information Technology [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets			0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	49,838		33,830
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,223		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Cash and Cash Equivalents [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	1,223		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | U.S. Defined Benefit Pension Plans [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,637		8,593		$ 10,571
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	9,637		8,593
Significant Unobservable Inputs (Level 3) [Member] | Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of plan assets	$ 0		$ 0