Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2014 defendant	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Line Items]
Number of pending claims (legal matter)		422	362
Estimated total cleanup costs, accrual		$ 0.4
Description of named defendants		Cases involving us typically name 50-300 defendants
Number of claims dismissed		80	115
Number of claims settled (claim)		6	23
Claims settlements amount (claim)		1.5	4.8
Cost sharing agreement, expiration date		Jan. 25, 2015
Asbestos-related liabilities, estimated liability			59.7
Asbestos-related liabilities, estimated insurance recovery			57.1
Minimum [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of defendants (defendant)		1
Asbestos forecast claim period (years)	5 years
Maximum [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of defendants (defendant)		833
Asbestos forecast claim period (years)	10 years	10 years	10 years	10 years
Terminated Relationship [Member]
Commitments and Contingencies Disclosure [Line Items]
Increase (decrease) in accrual		0.5
Superfund Sites Proceedings [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of pending claims (legal matter)		1
Estimated total cleanup costs, cost sharing percentage (percent)		2.00%
Loss contingency, minimum possible loss		18.8
Loss contingency, maximum possible loss		29.6
PCB Contamination Proceedings [Member]
Commitments and Contingencies Disclosure [Line Items]
Accrual for environmental loss contingencies		0.7	1.0
PCB contamination of the building, liability recording during the period		0.2
Remediation and monitoring costs incurred since inception related to the PCB soil and building contamination		2.3
Connecticut Voluntary Corrective Action Program [Member]
Commitments and Contingencies Disclosure [Line Items]
PCB contamination of the building, liability recording during the period		$ 0.2
Typical Case Involving Company [Member] | Minimum [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of defendants (defendant)		50
Typical Case Involving Company [Member] | Maximum [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of defendants (defendant)		300