Pension Plans and Other Postretirement Benefits (Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,240	$ 2,387
Interest cost	2,983	2,738
Expected return on plan assets	(5,092)	(4,330)
Amortization of prior service (credit) cost	25	25
Amortization of actuarial net loss (gain)	1,735	977
Net periodic benefit cost (income)	2,891	1,797
Domestic Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	711	405
Interest cost	757	692
Expected return on plan assets	(322)	(328)
Amortization of prior service (credit) cost	0	2
Amortization of actuarial net loss (gain)	0	(177)
Net periodic benefit cost (income)	1,146	594
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,945	1,495
Interest cost	1,269	1,555
Expected return on plan assets	(1,788)	(2,079)
Amortization of prior service (credit) cost	(24)	(26)
Amortization of transition obligation	0	0
Amortization of actuarial net loss (gain)	398	284
Net periodic benefit cost (income)	1,800	1,229
Foreign Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	2
Interest cost	0	24
Expected return on plan assets	0	0
Amortization of prior service (credit) cost	0	0
Amortization of transition obligation	0	3
Amortization of actuarial net loss (gain)	0	5
Net periodic benefit cost (income)	$ 0	$ 34

The amount of gains or losses recognized in net periodic benefit cost.

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Prior Service Cost

-URI http://asc.fasb.org/extlink&oid=49177896

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(1)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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- Definition

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

+ References

+ Details

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Expected Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512171

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(3)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

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.

+ References

+ Details

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- Definition

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.

+ References

+ Details

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- Definition

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

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(1)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

Reference 2: 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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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