Commitments and Contingencies (Details) (USD $)	3 Months Ended	12 Months Ended	3 Months Ended				12 Months Ended				3 Months Ended			3 Months Ended				3 Months Ended
	Mar. 31, 2014 claim LegalMatter	Dec. 31, 2013 claim LegalMatter	Mar. 31, 2014 Minimum [Member] defendant	Dec. 31, 2012 Minimum [Member]	Mar. 31, 2014 Maximum [Member] defendant	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Maximum [Member]	Mar. 31, 2014 Claims that Specify Amount of Damages Sought [Member] LegalMatter	Mar. 31, 2014 Claims that Cite Jurisdictional Amounts [Member] LegalMatter	Mar. 31, 2014 Claims that Specify Amount of Damages Sought not Based on Jurisdictional Requirements [Member] LegalMatter	Mar. 31, 2014 Claims that Specify Amount of Damages Sought not Based on Jurisdictional Requirements [Member] Minimum [Member] defendant	Mar. 31, 2014 Claims that Specify Amount of Damages Sought not Based on Jurisdictional Requirements [Member] Maximum [Member] defendant	Mar. 31, 2014 Claims that Specify Amount of Damages Sought not Based on Jurisdictional Requirements [Member] Legal Claim 1 [Member] LegalMatter	Mar. 31, 2014 Superfund Sites Proceedings [Member] LegalMatter	Mar. 31, 2013 Superfund Sites Proceedings [Member]	Mar. 31, 2014 PCB Contamination Proceedings [Member]	Dec. 31, 2010 PCB Contamination Proceedings [Member]	Mar. 31, 2014 PCB Contamination Proceedings [Member] Building [Member]	Mar. 31, 2014 Connecticut Voluntary Corrective Action Program [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of pending claims (legal matter)	392	362						72	318	2			1	1
Estimated total cleanup costs, cost sharing percentage (percent)														2.00%
Loss contingency, minimum possible loss															$ 18,800,000
Loss contingency, maximum possible loss															29,600,000
Estimated total cleanup costs, accrual	400,000
Accrual for environmental loss contingencies																1,200,000	1,000,000
Increase (decrease) in accrual																200,000
PCB contamination of the building, liability recording during the period																400,000			300,000
Remediation and monitoring costs incurred since inception related to the PCB soil and building contamination																1,900,000		800,000
Percentage of pending claims (percent)										1.00%
Number of defendants (defendant)			1		833						21	29
Estimated compensatory and punitive awards sought													20,000,000
Estimated punitive award sought													20,000,000
Description of named defendants	Cases involving us typically name 50-300 defendants
Number of claims dismissed	27	115
Number of claims settled (claim)	0	23
Claims settlements amount (claim)	0	4,800,000
Asbestos forcast claim period (years)				5 years	10 years	10 years	10 years
Cost sharing agreement, expiration date	Jan. 25, 2015
Asbestos-related liabilities, estimated liability		59,700,000
Asbestos-related liabilities, estimated insurance recovery		$ 57,100,000