Commitments and Contingencies - Asbestos Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	291 Months Ended
Mar. 31, 2015	Mar. 31, 2015
Minimum [Member]
Loss Contingencies [Line Items]
Estimated Time until Primary Insurance is Exhausted	1 year
Maximum [Member]
Loss Contingencies [Line Items]
Estimated Time until Primary Insurance is Exhausted	2 years
Asbestos [Member]
Loss Contingencies [Line Items]
Total settlement costs		$ 7.4
Percentage of settlement and defense costs covered by insurance		40.00%
Asbestos [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending cases	1,074	1,074
Number of pending claims	7,733
Number of pending claims seeking specific amounts of damages	126	126

Estimated Time until Primary Insurance is Exhausted

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- Definition

Loss Contingency, Number of Plaintiffs Specifying Damages Sought

+ References

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- Definition

Percentage of Settlement and Defense Costs Covered by Insurance

+ References

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

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- Definition

Number of pending claims pertaining to a loss contingency.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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