Employee Benefit Plans (Details) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plans expense	$ 25,826,000	$ 21,748,000	$ 13,109,000
Accumulated benefit obligations	771,831,000	628,197,000
Assets and Liabilities:
Total Accumulated Other Comprehensive Loss (Earnings), net of tax	176,877,000	140,562,000
Accumulated benefit obligations	771,831,000	628,197,000
Estimated future benefit payments [Abstract]
Number of employees covered in multiemployer pension plans	100
Contributions to multiemployer plans	2,000,000	2,000,000	2,000,000
Pension Plans, Defined Benefit [Member]
Accumulated benefit obligations in excess of plan assets [Abstract]
Projected benefit obligation (PBO)	317,223,000	241,923,000
Accumulated benefit obligation (ABO)	259,850,000	201,617,000
Fair value of plan assets	82,654,000	66,485,000
Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member]
Change in Plan Assets
Fair value of plan assets at beginning of year	30,405,000	26,120,000
Fair value of plan assets at end of year	38,095,000	30,405,000
Fair value of plan assets at beginning of year	30,405,000	26,120,000
Realized gains (losses)	(3,000)	(26,000)
Unrealized gains (losses)	2,348,000	2,444,000
Purchases, sales, issuances and settlements, net	5,345,000	1,867,000
Fair value of plan assets at end of year	38,095,000	30,405,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	38,095,000	30,405,000
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations	166,853,000	153,916,000
Change in benefit obligation
Benefit obligation at beginning of year	164,288,000	161,110,000
Benefits earned during the year	3,278,000	3,415,000	3,012,000
Interest cost	9,019,000	8,043,000	7,381,000
Participants' contributions	815,000	809,000
Benefits paid	(7,012,000)	(6,416,000)
Actuarial loss (gain)	10,481,000	(464,000)
Business acquisitions/divestitures	7,592,000	0
Amendments	0	1,004,000
Settlements and curtailments	0	(1,697,000)
Currency translation and other	(3,451,000)	(1,516,000)
Benefit obligation at end of year	185,010,000	164,288,000	161,110,000
Change in Plan Assets
Fair value of plan assets at beginning of year	121,815,000	107,473,000
Actual return on plan assets	452,000	11,588,000
Company contributions	7,275,000	8,163,000
Participants' contributions	815,000	809,000
Benefits paid	(7,012,000)	(6,416,000)
Business acquisitions/divestitures	0	0
Settlements and curtailments	0	(503,000)
Currency translation	(1,538,000)	701,000
Fair value of plan assets at end of year	121,807,000	121,815,000	107,473,000
Fair value of plan assets at beginning of year	121,815,000	107,473,000
Fair value of plan assets at end of year	121,807,000	121,815,000	107,473,000
Funded status	(63,203,000)	(42,473,000)
Assets and Liabilities:
Other assets and deferred charges	2,052,000	5,930,000
Accrued compensation and employee benefits	(1,293,000)	(1,343,000)
Other deferrals (principally compensation)	(63,962,000)	(47,060,000)
Total Assets and Liabilites	(63,203,000)	(42,473,000)
Net actuarial losses (gains)	22,892,000	7,683,000
Prior service cost (credit)	1,377,000	1,501,000
Net asset at transition, other	(112,000)	(155,000)
Deferred taxes	(5,474,000)	(1,057,000)
Total Accumulated Other Comprehensive Loss (Earnings), net of tax	18,683,000	7,972,000
Net amount recognized at December 31 ,	(44,520,000)	(34,501,000)
Accumulated benefit obligations	166,853,000	153,916,000
Net periodic benefit cost [Abstract]
Service Cost	3,278,000	3,415,000	3,012,000
Interest Cost	9,019,000	8,043,000	7,381,000
Expected return on plan assets	(8,148,000)	(6,377,000)	(5,614,000)
Amortization of:
Prior service cost (income)	122,000	62,000	34,000
Transition obligation	(44,000)	(42,000)	(43,000)
Recognized actuarial (gain) loss	254,000	392,000	303,000
Settlement and curtailment gain (loss)	2,030,000	(347,000)	(795,000)
Other	0	0	0
Prior service cost (income)	119,000
Transition obligation	(46,000)
Recognized actuarial (gain) loss	597,000
Total net periodic benefit cost	670,000
Total net periodic benefit cost	6,511,000	5,146,000	4,278,000
Discount rate (in hundredths)	4.62%	5.04%
Average wage increase (in hundredths)	3.43%	3.73%
Ultimate medical trend rate (in hundredths)	0.00%	0.00%
Discount rate (in hundredths)	5.04%	5.15%	5.45%
Average wage increase (in hundredths)	3.73%	3.68%	3.72%
Expected return on plan assets (in hundredths)	6.45%	6.10%	6.51%
Estimated future benefit payments [Abstract]
2012	4,382,000
2013	4,585,000
2014	4,780,000
2015	5,847,000
2016	5,834,000
2017-2021	38,543,000
Fair value of plan assets	121,807,000	121,815,000	107,473,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member]
Change in Plan Assets
Fair value of plan assets at end of year	7,053,000	7,349,000
Fair value of plan assets at end of year	7,053,000	7,349,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	7,053,000	7,349,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Real Estate [Member]
Change in Plan Assets
Fair value of plan assets at end of year	7,053,000	7,349,000
Fair value of plan assets at end of year	7,053,000	7,349,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	7,053,000	7,349,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Other plan assets [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Cash and Cash Equivalents [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Common stocks [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fixed Income Funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Common stock funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member]
Change in Plan Assets
Fair value of plan assets at end of year	25,708,000	33,363,000
Fair value of plan assets at end of year	25,708,000	33,363,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	25,708,000	33,363,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Real Estate [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Other plan assets [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Cash and Cash Equivalents [Member]
Change in Plan Assets
Fair value of plan assets at end of year	2,258,000	5,098,000
Fair value of plan assets at end of year	2,258,000	5,098,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	2,258,000	5,098,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Common stocks [Member]
Change in Plan Assets
Fair value of plan assets at end of year	23,450,000	28,265,000
Fair value of plan assets at end of year	23,450,000	28,265,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	23,450,000	28,265,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fixed Income Funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year		0
Fair value of plan assets at end of year		0
Estimated future benefit payments [Abstract]
Fair value of plan assets		0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Common stock funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member]
Change in Plan Assets
Fair value of plan assets at end of year	89,046,000	81,103,000
Fair value of plan assets at end of year	89,046,000	81,103,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	89,046,000	81,103,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member] \| Real Estate [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member] \| Other plan assets [Member]
Change in Plan Assets
Fair value of plan assets at end of year	2,737,000	1,286,000
Fair value of plan assets at end of year	2,737,000	1,286,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	2,737,000	1,286,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member] \| Cash and Cash Equivalents [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member] \| Common stocks [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fixed Income Funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	36,629,000	38,221,000
Fair value of plan assets at end of year	36,629,000	38,221,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	36,629,000	38,221,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member] \| Common stock funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	49,680,000	41,596,000
Fair value of plan assets at end of year	49,680,000	41,596,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	49,680,000	41,596,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value Total [Member]
Change in Plan Assets
Fair value of plan assets at end of year	121,807,000	121,815,000
Fair value of plan assets at end of year	121,807,000	121,815,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	121,807,000	121,815,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value Total [Member] \| Real Estate [Member]
Change in Plan Assets
Fair value of plan assets at end of year	7,053,000	7,349,000
Fair value of plan assets at end of year	7,053,000	7,349,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	7,053,000	7,349,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value Total [Member] \| Other plan assets [Member]
Change in Plan Assets
Fair value of plan assets at end of year	2,737,000	1,286,000
Fair value of plan assets at end of year	2,737,000	1,286,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	2,737,000	1,286,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value Total [Member] \| Cash and Cash Equivalents [Member]
Change in Plan Assets
Fair value of plan assets at end of year	2,258,000	5,098,000
Fair value of plan assets at end of year	2,258,000	5,098,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	2,258,000	5,098,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value Total [Member] \| Common stocks [Member]
Change in Plan Assets
Fair value of plan assets at end of year	23,450,000	28,265,000
Fair value of plan assets at end of year	23,450,000	28,265,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	23,450,000	28,265,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value Total [Member] \| Fixed Income Funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	36,629,000	38,221,000
Fair value of plan assets at end of year	36,629,000	38,221,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	36,629,000	38,221,000
Foreign Pension Plans, Defined Benefit [Member] \| Fair Value Total [Member] \| Common stock funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	49,680,000	41,596,000
Fair value of plan assets at end of year	49,680,000	41,596,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	49,680,000	41,596,000
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations	478,561,000	378,510,000
Change in benefit obligation
Benefit obligation at beginning of year	416,755,000	380,096,000
Benefits earned during the year	14,167,000	11,272,000	10,959,000
Interest cost	27,237,000	22,531,000	21,555,000
Participants' contributions	0	0
Benefits paid	(50,142,000)	(24,002,000)
Actuarial loss (gain)	40,020,000	26,081,000
Business acquisitions/divestitures	79,970,000	0
Amendments	258,000	777,000
Settlements and curtailments	(1,628,000)	0
Currency translation and other	123,000	0
Benefit obligation at end of year	526,760,000	416,755,000	380,096,000
Change in Plan Assets
Fair value of plan assets at beginning of year	409,783,000	360,168,000
Actual return on plan assets	47,307,000	43,617,000
Company contributions	42,000,000	30,000,000
Participants' contributions	0	0
Benefits paid	(50,142,000)	(24,002,000)
Business acquisitions/divestitures	66,243,000	0
Settlements and curtailments	0	0
Currency translation	0	0
Fair value of plan assets at end of year	515,191,000	409,783,000	360,168,000
Fair value of plan assets at beginning of year	409,783,000	360,168,000
Fair value of plan assets at end of year	515,191,000	409,783,000	360,168,000
Funded status	(11,569,000)	(6,972,000)
Assets and Liabilities:
Other assets and deferred charges	0	0
Accrued compensation and employee benefits	0	0
Other deferrals (principally compensation)	(11,569,000)	(6,972,000)
Total Assets and Liabilites	(11,569,000)	(6,972,000)
Net actuarial losses (gains)	182,143,000	160,922,000
Prior service cost (credit)	4,819,000	7,046,000
Net asset at transition, other	0	0
Deferred taxes	(65,437,000)	(58,788,000)
Total Accumulated Other Comprehensive Loss (Earnings), net of tax	121,525,000	109,180,000
Net amount recognized at December 31 ,	109,956,000	102,208,000
Accumulated benefit obligations	478,561,000	378,510,000
Net periodic benefit cost [Abstract]
Service Cost	14,167,000	11,272,000	10,959,000
Interest Cost	27,237,000	22,531,000	21,555,000
Expected return on plan assets	(38,472,000)	(31,912,000)	(28,998,000)
Amortization of:
Prior service cost (income)	1,304,000	1,303,000	1,258,000
Transition obligation	0	0	0
Recognized actuarial (gain) loss	8,335,000	5,082,000	4,913,000
Settlement and curtailment gain (loss)	1,180,000	0	0
Other	123,000	0	0
Prior service cost (income)	1,048,000
Transition obligation	0
Recognized actuarial (gain) loss	13,515,000
Total net periodic benefit cost	14,563,000
Total net periodic benefit cost	13,874,000	8,276,000	9,687,000
Discount rate (in hundredths)	4.85%	5.50%
Average wage increase (in hundredths)	4.00%	4.50%
Ultimate medical trend rate (in hundredths)	0.00%	0.00%
Discount rate (in hundredths)	5.50%	5.95%	6.10%
Average wage increase (in hundredths)	4.50%	4.50%	4.50%
Expected return on plan assets (in hundredths)	7.75%	7.75%	7.75%
Defined Benefit Plan, Assets, Actual Allocations [Abstract]
Equity - domestic (in hundredths)	39.00%	40.00%
Equity - international (in hundredths)	19.00%	22.00%
Fixed income - domestic (in hundredths)	36.00%	32.00%
Real estate and other (in hundredths)	6.00%	6.00%
Total (in hundredths)	100.00%	100.00%
Defined Benefit Plan, Assets, Target Allocation [Abstract]
Equity - domestic (in hundredths)	35.00%
Equity - international (in hundredths)	22.00%
Fixed income - domestic (in hundredths)	35.00%
Real estate and other (in hundredths)	8.00%
Total (in hundredths)	100.00%
Estimated future benefit payments [Abstract]
2012	46,340,000
2013	34,628,000
2014	35,044,000
2015	35,398,000
2016	35,102,000
2017-2021	193,191,000
Expected contribution to U.S. Plan in next year, minimum	20,000,000
Expected contribution to U.S. Plan in next year, maximum	40,000,000
Fair value of plan assets	515,191,000	409,783,000	360,168,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member]
Change in Plan Assets
Fair value of plan assets at end of year	31,042,000	23,056,000
Fair value of plan assets at end of year	31,042,000	23,056,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	31,042,000	23,056,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Common Stock - US Company [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Common Stock - Non-US Company [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fixed income investments - Corporate bonds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fixed income investments - Private placements [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fixed income investments - Government securities [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Common stock funds - Mutual funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Common stock funds - Collective trusts [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Real Estate [Member]
Change in Plan Assets
Fair value of plan assets at end of year	26,481,000	23,056,000
Fair value of plan assets at end of year	26,481,000	23,056,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	26,481,000	23,056,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Other plan assets [Member]
Change in Plan Assets
Fair value of plan assets at end of year	4,561,000	0
Fair value of plan assets at end of year	4,561,000	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	4,561,000	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 3 [Member] \| Cash and Cash Equivalents [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member]
Change in Plan Assets
Fair value of plan assets at end of year	214,373,000	175,604,000
Fair value of plan assets at end of year	214,373,000	175,604,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	214,373,000	175,604,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Common Stock - US Company [Member]
Change in Plan Assets
Fair value of plan assets at end of year	153,816,000	126,567,000
Fair value of plan assets at end of year	153,816,000	126,567,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	153,816,000	126,567,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Common Stock - Non-US Company [Member]
Change in Plan Assets
Fair value of plan assets at end of year	3,065,000	5,381,000
Fair value of plan assets at end of year	3,065,000	5,381,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	3,065,000	5,381,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fixed income investments - Corporate bonds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fixed income investments - Private placements [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
Fair value of plan assets at end of year	0	0
Estimated future benefit payments [Abstract]
Fair value of plan assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fixed income investments - Government securities [Member]
Change in Plan Assets
Fair value of plan assets at end of year	9,268,000	6,070,000
Fair value of plan assets at end of year	9,268,000	6,070,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	9,268,000	6,070,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Common stock funds - Mutual funds [Member]
Change in Plan Assets
Fair value of plan assets at end of year	38,476,000	32,533,000
Fair value of plan assets at end of year	38,476,000	32,533,000
Estimated future benefit payments [Abstract]
Fair value of plan assets	38,476,000	32,533,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Common stock funds - Collective trusts [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
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Estimated future benefit payments [Abstract]
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United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Real Estate [Member]
Change in Plan Assets
Fair value of plan assets at end of year	0	0
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United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Other plan assets [Member]
Change in Plan Assets
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Estimated future benefit payments [Abstract]
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United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Cash and Cash Equivalents [Member]
Change in Plan Assets
Fair value of plan assets at end of year	9,748,000	5,053,000
Fair value of plan assets at end of year	9,748,000	5,053,000
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Fair value of plan assets	9,748,000	5,053,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fixed Income Funds [Member]
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United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member]
Change in Plan Assets
Fair value of plan assets at end of year	269,776,000	211,123,000
Fair value of plan assets at end of year	269,776,000	211,123,000
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Fair value of plan assets	269,776,000	211,123,000
United States Pension Plans of US Entity, Defined Benefit [Member] \| Fair Value, Inputs, Level 2 [Member] \| Common Stock - US Company [Member]
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Target allocation percentage of investments in domestic equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Of the original amount of transition assets as of the date FAS 87 or 106 was initially applied, (a) the fair value of plan assets plus any recognized accrued pension or other postretirement benefit cost or less any recognized prepaid pension or other postretirement benefit cost in excess of (b) the benefit obligation, the portion of which has yet to be recognized as components of net periodic benefit cost. Of the original amount of transition obligations as of the date FAS 87 or 106 was initially applied, (a) the benefit obligation in excess of (b) the fair value of plan assets plus any recognized accrued pension or other postretirement benefit cost or less any recognized prepaid pension or other postretirement benefit cost, the portion of which has yet to be recognized as components of net periodic benefit cost. This amount is pretax.

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The amounts in accumulated other comprehensive income related to transition assets (obligations), origination from the adoption of FAS 87 and 106, expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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The amount of the transition obligation or asset recognized in net periodic benefit cost.

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The aggregate net amount recognized in the balance sheet associated with the defined benefit plan(s). Will normally be the same as the Defined Benefit Plan, Funded Status of Plan, Total.

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The aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation.

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The amount for overfunded plans recognized in the balance sheet as a noncurrent asset associated with a defined benefit pension plan or other postretirement defined benefit plan.

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The interest rate used to adjust for the time value of money for the plan.

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Expected rate of compensation increases (for pay-related plans).

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The interest rate used to adjust for the time value of money.

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An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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Expected rate of compensation increases (for pay-related plans).

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Disclosure under FAS 132R, before it was amended by FAS 158, of the net amount recognized in the statement of financial position for a defined benefit plan(s). This will normally be the same amount as Defined Benefit Plan, before Adoption of FAS 158 Recognition Provisions, Amounts Recognized in Balance Sheet, Total.

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1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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The amount of increase in the benefit obligation attributed to business combinations.

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The amount of increase in the plan assets attributed to a business combination.

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The increase in the fair value of plan assets from contributions made by the employer.

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The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets.

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The amount of decrease that is related to an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.

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The percentage of the fair value of debt securities to the fair value of total plan assets held as of the measurement date.

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The effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).

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The amount of the benefits expected to be paid in Year 5.

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The amount of the benefits expected to be paid in Year 4.

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The amount of the benefits expected to be paid in Year 1.

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The amount of the benefits expected to be paid in Year 3.

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The amount of the benefits expected to be paid in Year 2.

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An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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The amount of increase or decrease in the benefit obligation attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

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The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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This element may be used to encapsulate any other periodic costs associated with defined benefit plans that are not separately disclosed.

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No definition available.

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If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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Target allocation percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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The amount of the cost recognized during the period for defined contribution plans.

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Amount of contributions made to multiemployer plans for each period for which a statement of income is presented. An employer may disclose total contributions to multiemployer plans without disaggregating the amounts attributable to pension plans and other postretirement benefit plans.

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