Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended			24 Months Ended			12 Months Ended
	Jul. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Feb. 28, 2011	Nov. 30, 2010	Dec. 31, 2008 UAW Litigation [Member]	Dec. 31, 2011 Estimated future settlement of existing claims [Member]	Dec. 31, 2010 Estimated future settlement of existing claims [Member]
Contingencies Textuals [Abstract]
Loss as a result of the September 2008 DTP ruling		$ 29.1	$ 0	$ 0				$ 4.0
Waste disposal sites with potential liability under the Comprehensive Environmental Response, Compensation and Liability Act		39
Accrual for indicated environmental liabilities		10
Site contingency time frame		3 to 5
Individual indicated environmental liabilities do not exceed X at any given site		3.0
Number of additional lawsuits filed in 2007 and 2008					4
Number of plaintiffs included in four additional lawsuits in 2007 and 2008					340
Number of unfiled claimants settled in July 2010		2,700
Amount agreed to pay against settlement of unfiled claimants			28.0
First settlement payment made							13.9
Final settlement payment made						13.9
Pending asbestos related product liability claims		16,000	17,000
Claims resolved		1,800	7,700
Payment being made to a claimant by or on behalf of the Company		288	245
Payment being made to a claimant by or on behalf of the company, percentage		15.90%	3.20%
Company paid in defense and indemnity in advance of insurers reimbursement		190.9
Cash and notes received from insurers		81.1
Net Outstanding Balance Relating To Past Settlements And Defense Costs		109.8
Outstanding balance to be fully recovered		0	120.6
Outstanding balance expected to be recovered in the next twelve months		33.0	120.6
Payments for Legal Settlements	40.7
Estimated liability for future claims resolutions		61.7	50.6
Assets related to claims		61.7	49.9
Expected percentage of insurance carrier reimbursement		100.00%
Assets
Prepayments and other current assets		28.8	25.8						28.8	25.8
Other non-current assets		32.9	24.8						32.9	24.8
Total insurance assets									61.7	50.6
Liabilities [Abstract]
Accounts payable and accrued expenses		28.8	25.8						28.8	25.8
Other non-current liabilities		32.9	24.8						32.9	24.8
Total accrued liabilities									$ 61.7	$ 50.6