Commitments and Contingencies (Details) (USD $)	3 Months Ended			9 Months Ended			157 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Asbestos [Member] Claim	Sep. 30, 2014 Asbestos [Member] Claim	Sep. 30, 2014 Asbestos [Member] Minimum [Member]	Sep. 30, 2014 Asbestos [Member] Maximum [Member]
Loss Contingencies [Line Items]
Pending claims, approximate number						2,200	2,200
Reimbursement from insurance carrier for settled claims							$ 16,700,000
Estimated legal costs								36,100,000	55,400,000
Increase for low end of range						11,700,000
Increase for high end of range						18,000,000
Incremental pre-tax provision						12,800,000
Range of possible loss, minimum						43,000,000	43,000,000
Range of possible loss, maximum						76,400,000	76,400,000
Litigation charge	0	10,600,000	0	10,650,000	0
Changes in product warranties [Roll forward]
Balance, beginning of period	22,801,000		23,498,000	18,041,000	17,288,000
Liabilities accrued for current year sales	21,490,000		20,755,000	63,106,000	61,131,000
Settlements of warranty claims	(22,457,000)		(23,556,000)	(59,313,000)	(57,722,000)
Balance, end of period	$ 21,834,000	$ 22,801,000	$ 20,697,000	$ 21,834,000	$ 20,697,000