Commitments and Contingencies (Details) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended		18 Months Ended
	Jun. 30, 2015 USD ($) LegalMatter	Jun. 30, 2015 USD ($) defendant LegalMatter claim	Dec. 31, 2014 USD ($) LegalMatter claim	Dec. 31, 2012	Jun. 30, 2015 USD ($) LegalMatter
Commitments and Contingencies Disclosure [Line Items]
Number of pending claims (legal matter) | LegalMatter	444	444	438		444
Description of named defendants		Cases involving us typically name 50-300 defendants
Number of claims dismissed | claim		45	104
Number of claims settled (claim) | claim		1	13
Claims settlements amount		$ 0.5	$ 3.2
Cost sharing agreement, expiration date		Jan. 25, 2015
Asbestos-related liabilities, estimated liability			56.5
Asbestos-related liabilities, estimated insurance recovery			53.0
Minimum [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of defendants (defendant) | defendant		1
Maximum [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of defendants (defendant) | defendant		833
Asbestos forcast claim period (years)		10 years		10 years
Superfund Sites Proceedings [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of pending claims (legal matter) | LegalMatter	1	1			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
Estimated total cleanup costs, accrual	$ 0.4	0.4			$ 0.4
PCB Contamination Proceedings [Member]
Commitments and Contingencies Disclosure [Line Items]
Estimated total cleanup costs, accrual	0.7	0.7			0.7
Accrual for environmental loss contingencies	0.2	0.2			0.2
Remediation and monitoring costs incurred since inception related to the PCB soil and building contamination			$ 0.5		$ 2.4
Connecticut Voluntary Corrective Action Program [Member]
Commitments and Contingencies Disclosure [Line Items]
PCB contamination of the building, liability recording during the period		$ 0.1
Claim of Improper Relationship Termination [Member]
Commitments and Contingencies Disclosure [Line Items]
Claims settlements amount	$ 0.5