Employee Benefit Plans - Benefit Payments and Contributions (Details) (USD $)	12 Months Ended
Dec. 31, 2014
U.S. Pension Plan, Defined Benefit [Member]
Expected Future Benefit Payments by Fiscal Year [Abstract]
2015	$ 35,312,000
2016	36,702,000
2017	38,784,000
2018	40,120,000
2019	40,892,000
2020 - 2024	221,358,000
Non-U.S. Pension Plans, Defined Benefit [Member]
Estimated Future Employer Contributions [Abstract]
Estimated future employer contributions in next fiscal year	6,500,000
Expected Future Benefit Payments by Fiscal Year [Abstract]
2015	6,295,000
2016	6,841,000
2017	6,889,000
2018	7,196,000
2019	7,139,000
2020 - 2024	42,775,000
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Estimated Future Employer Contributions [Abstract]
Estimated future employer contributions in next fiscal year	22,400,000
Expected Future Benefit Payments by Fiscal Year [Abstract]
2015	22,412,000
2016	7,968,000
2017	3,986,000
2018	5,206,000
2019	11,282,000
2020 - 2024	55,417,000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Expected Future Benefit Payments by Fiscal Year [Abstract]
2015	926,000
2016	940,000
2017	951,000
2018	959,000
2019	946,000
2020 - 2024	$ 4,647,000

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ 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 (f)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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