Pension and Other Postretirement Benefits (Details 2) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Plan Settlement		$ (9,856)	$ 0	$ 0
Defined benefit pension plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning balance		513,384	453,722
Service cost		5,508	4,546	6,181
Interest cost		20,019	22,026	20,112
Amendments		(463)
Actuarial loss		(18,910)	68,634
Benefits paid		(56,734)	(27,365)
Transfers in		3,951	1,929
Curtailment gain		(465)	0
Plan Settlement		(375)	(4,949)
Special termination benefit		0	715	1,016
Participant contributions		368	906
Foreign exchange rate changes		(5,248)	(6,780)
Benefit obligation, ending balance	$ 461,035	461,035	513,384	453,722
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance		452,687	453,578
Actual return on plan assets		(3,781)	26,785
Company contributions		4,527	7,621
Participant contributions		368	906
Benefits paid		(56,734)	(27,365)
Plan Settlements		(376)	(4,949)
Transfers in		3,434	1,929
Foreign exchange rate changes		(4,743)	(5,818)
Fair value of plan assets, ending balance	395,382	395,382	452,687	453,578
Funded/(underfunded) status, December 31	(65,653)	(65,653)	(60,697)
Defined benefit pension plans, U.S. [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning balance		433,079	374,740
Service cost		4,160	3,549
Interest cost		17,967	19,129
Amendments		0
Actuarial loss		(16,622)	58,906
Benefits paid	(27,986)	(52,490)	(23,960)
Transfers in		0	0
Curtailment gain		(465)	0
Plan Settlement		0	0
Special termination benefit		0	715
Participant contributions		0	0
Foreign exchange rate changes		0	0
Benefit obligation, ending balance	385,629	385,629	433,079	374,740
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance		380,937	379,059
Actual return on plan assets		(5,045)	20,436
Company contributions		3,427	5,402
Participant contributions		0	0
Benefits paid	(27,986)	(52,490)	(23,960)
Plan Settlements		0	0
Transfers in		0	0
Foreign exchange rate changes		0	0
Fair value of plan assets, ending balance	326,829	326,829	380,937	379,059
Funded/(underfunded) status, December 31	(58,800)	(58,800)	(52,142)
Defined benefit pension plans, Non-U.S. [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning balance		80,305	78,982
Service cost		1,348	997
Interest cost		2,052	2,897
Amendments		(463)
Actuarial loss		(2,288)	9,728
Benefits paid		(4,244)	(3,405)
Transfers in		3,951	1,929
Curtailment gain		0	0
Plan Settlement		(375)	(4,949)
Special termination benefit		0	0
Participant contributions		368	906
Foreign exchange rate changes		(5,248)	(6,780)
Benefit obligation, ending balance	75,406	75,406	80,305	78,982
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance		71,750	74,519
Actual return on plan assets		1,264	6,349
Company contributions		1,100	2,219
Participant contributions		368	906
Benefits paid		(4,244)	(3,405)
Plan Settlements		(376)	(4,949)
Transfers in		3,434	1,929
Foreign exchange rate changes		(4,743)	(5,818)
Fair value of plan assets, ending balance	68,553	68,553	71,750	74,519
Funded/(underfunded) status, December 31	(6,853)	(6,853)	(8,555)
Other postretirement benefit plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning balance		46,814	46,243
Service cost		145	139	233
Interest cost		1,836	2,179	2,061
Actuarial loss		(2,521)	3,049
Benefits paid		(6,970)	(7,568)
Curtailment gain		0	0
Special termination benefit		0	0	0
Participant contributions		2,486	2,833
Foreign exchange rate changes		(84)	(61)
Benefit obligation, ending balance	41,706	41,706	46,814	46,243
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance		0	0
Company contributions		4,484	4,735
Participant contributions		2,486	2,833
Benefits paid		(6,970)	(7,568)
Fair value of plan assets, ending balance	0	0	0	$ 0
Funded/(underfunded) status, December 31	$ 41,706	$ 41,706	$ 46,814

Defined Benefit Plan, Transfers In, Benefit Obligation

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Defined Benefit Plan, Transfers In, Plan Assets

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No definition available.

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The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)
-URI http://asc.fasb.org/extlink&oid=6504192

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (a)
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Accumulated Postretirement Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503904

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of gain (loss) from foreign currency exchange rate changes for benefit obligation for plans of a foreign operation whose functional currency is not the reporting currency.

+ References

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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.

+ References

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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.

+ References

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The amount of increase or decrease due to a change in the terms of an existing plan or the initiation of a new plan. A plan amendment may increase or decrease benefits, including those attributed to years of service already rendered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Service Cost (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6525008

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The amount of decrease that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The amount that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.

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The amount of increase related to special termination benefits offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. A situation involving termination benefits may also involve a curtailment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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