Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Receivables, net:
Customers	$ 1,014.6		$ 1,037.4
Other	134.8		149.9
Gross receivables	1,149.4		1,187.3
Bad debt allowance(a)	(2.1)	[1]	(4.3)	[1]
Total receivables, net	1,147.3		1,183.0
Inventories, net:
Raw material and supplies	264.0		254.4
Work in progress	82.0		90.9
Finished goods	117.6		124.3
FIFO inventories	463.6		469.6
LIFO reserve	(16.0)		(15.3)
Total inventories, net	447.6		454.3
Prepayments and other current assets:
Prepaid tooling	39.1		23.5
Product liability insurance asset	0		28.8
Derivatives	5.7		2.7
Prepaid taxes	0.7		0.8
Other	22.0		26.6
Total prepayments and other current assets	67.5		82.4
Property, plant and equipment, net:
Property, plant and equipment, gross	3,245.6		2,903.9
Accumulated depreciation	1,567.0		1,343.9
Property, plant & equipment, net, excluding tooling	1,678.6		1,560.0
Tooling, net of amortization	109.4		104.3
Property, plant & equipment, net	1,788.0		1,664.3
Investments and advances:
Investment in equity affiliates	217.7		217.4
Other investments and advances	165.0		127.9
Total investments and advances	382.7		345.3
Other non-current assets:
Deferred income taxes	244.1	[2]	313.9	[2]
Other intangible assets	206.3		243.3
Product liability insurance asset	85.6		32.9
Other	39.9		34.9
Total other non-current assets	575.9		625.0
Accounts payable and accrued expenses:
Trade payables	815.4		820.7
Trade payables for capital expenditures	39.8		48.9
Payroll and employee related	180.7		201.9
Product liability	36.5		28.8
Customer related	36.3		29.9
Product warranties	33.1		38.6
Retirement related	27.9		30.9
Interest	11.7		14.2
Derivatives	9.8		2.4
Dividends payable to noncontrolling shareholders	9.5		11.7
Insurance	9.2		10.5
Severance	8.9		5.6
Legal and professional fees	4.2		6.8
Environmental	1.6		3.4
Current deferred income taxes	1.4		6.5
Other	61.2		37.0
Total accounts payable and accrued expenses	1,287.2		1,297.8
Other non-current liabilities:
Deferred income taxes	89.4	[2]	120.2	[2]
Cross currency swaps and derivatives	58.1		85.5
Product liability	49.1		32.9
Product warranties	31.8		34.1
Deferred revenue	30.5		26.0
Environmental	2.3		8.1
Other	56.9		85.1
Total other non-current liabilities	318.1		391.9
Accumulated other comprehensive loss
Foreign currency translation adjustments	140.8		85.8
Market value of hedge instruments	(37.2)		(50.5)
Defined benefit postretirement plans	(225.8)		(187.2)
Other	0.9		1.1
Accumulated other comprehensive loss	(121.3)		(150.8)
Bad debt allowance
Interest costs capitalized	17.8		15.0
Allowance for Doubtful Accounts [Member]
Bad debt allowance
Beginning balance, January 1	(4.3)		(4.0)		(4.3)
Provision	(0.8)		(1.4)		(1.1)
Write-offs	3.0		1.0		2.5
Translation adjustment and other	0		0.1		(1.1)
Ending balance, December 31	(2.1)		(4.3)		(4.0)
Land [Member]
Property, plant and equipment, net:
Property, plant and equipment, gross	76.4		71.2
Building [Member]
Property, plant and equipment, net:
Property, plant and equipment, gross	640.8		616.7
Machinery and equipments
Property, plant and equipment, net:
Property, plant and equipment, gross	2,282.4		2,006.9
Capital leases
Property, plant and equipment, net:
Property, plant and equipment, gross	2.3		2.3
Construction in progress
Property, plant and equipment, net:
Property, plant and equipment, gross	$ 243.7		$ 206.8

[1] (a) Bad debt allowance:2012 2011 2010Beginning balance, January 1$(4.3) $(4.0) $(4.3)Provision(0.8) (1.4) (1.1)Write-offs3.0 1.0 2.5Translation adjustment and other— 0.1 (1.1)Ending balance, December 31$(2.1) $(4.3) $(4.0)

[2] urrent and non-current assets and liabilities have been netted within their respective taxing jurisdictions.