Reporting Segments and Related Information - Geographic Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Maximum percentage in consolidated sales of countries outside the US other than Germany France Hungary and South Korea									5.00%
Investment in NSK-Warner	$ 217.7				$ 217.4				$ 217.7	$ 217.4
Net sales	1,719.1	1,695.2	1,856.4	1,912.5	1,773.7	1,791.8	1,818.8	1,730.4	7,183.2	7,114.7	5,652.8
Long-lived assets	1,788.0				1,664.3				1,788.0	1,664.3	1,542.6
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,857.2	1,674.0	1,451.1
Long-lived assets	508.1				492.6				508.1	492.6	466.6
Total Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									3,670.5	3,984.0	3,123.0
Long-lived assets	768.2				735.1				768.2	735.1	737.2
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,871.3	2,200.0	1,839.9
Long-lived assets	432.2				420.4				432.2	420.4	447.5
Hungary
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									448.9	503.2	418.3
Long-lived assets	64.3				56.9				64.3	56.9	53.0
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									335.2	363.0	318.7
Long-lived assets	45.9				63.2				45.9	63.2	63.0
Other Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,015.1	917.8	546.1
Long-lived assets	225.8				194.6				225.8	194.6	173.7
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									505.6	471.7	358.0
Long-lived assets	140.4				124.5				140.4	124.5	94.8
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									499.1	416.6	330.6
Long-lived assets	184.3				148.0				184.3	148.0	104.9
Other Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									650.8	568.4	390.1
Long-lived assets	187.0				164.1				187.0	164.1	139.1
NSK Warner [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity investment in NSK Warner, percent	50.00%								50.00%
Investment in NSK-Warner	$ 184.4				$ 189.2				$ 184.4	$ 189.2	$ 180.3