Reporting Segments and Related Information - Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
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	$ 239.6				$ 218.9				$ 239.6	$ 218.9
Net sales	2,586.4	$ 2,416.2	$ 2,389.7	$ 2,407.0	2,259.0	$ 2,214.2	$ 2,329.2	$ 2,268.6	9,799.3	9,071.0	$ 8,023.2
Long-lived assets	2,863.8				2,501.8				2,863.8	2,501.8	2,448.1
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									2,280.0	2,236.0	1,985.1
Long-lived assets	719.3				799.3				719.3	799.3	800.5
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									3,735.5	3,470.1	3,618.6
Long-lived assets	987.0				830.2				987.0	830.2	811.3
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,652.6	1,735.1	1,857.1
Long-lived assets	413.4				370.3				413.4	370.3	380.9
Hungary
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									655.7	541.1	500.5
Long-lived assets	147.5				122.2				147.5	122.2	112.4
Other Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,427.2	1,193.9	1,261.0
Long-lived assets	426.1				337.7				426.1	337.7	318.0
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,560.1	1,218.0	1,009.0
Long-lived assets	554.8				384.6				554.8	384.6	355.8
South Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									877.6	948.2	741.7
Long-lived assets	244.2				208.0				244.2	208.0	218.6
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									920.2	805.6	312.7
Long-lived assets	201.2				136.2				201.2	136.2	132.8
Other Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									425.9	393.1	356.1
Long-lived assets	$ 157.3				143.5				$ 157.3	143.5	129.1
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	$ 185.1				$ 172.9				$ 185.1	$ 172.9	$ 158.7