Reporting Segments and Related Information - Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Minimum percentage in consolidated sales of countries by certain countries									5.00%
Investment in NSK-Warner	$ 243.5				$ 239.6				$ 243.5	$ 239.6
Net sales	2,572.8	$ 2,478.5	$ 2,694.0	$ 2,784.3	2,586.4	$ 2,416.2	$ 2,389.7	$ 2,407.0	10,529.6	9,799.3	$ 9,071.0
Long-lived assets	2,903.8				2,863.8				$ 2,903.8	2,863.8	2,501.8
Non-US [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of net sales									77.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									$ 2,393.5	2,280.0	2,236.0
Long-lived assets	728.9				719.3				728.9	719.3	799.3
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									4,021.9	3,735.5	3,470.1
Long-lived assets	976.6				987.0				976.6	987.0	830.2
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,665.1	1,652.6	1,735.1
Long-lived assets	371.1				413.4				371.1	413.4	370.3
Hungary
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									687.3	655.7	541.1
Long-lived assets	153.0				147.5				153.0	147.5	122.2
Other Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,669.5	1,427.2	1,193.9
Long-lived assets	452.5				426.1				452.5	426.1	337.7
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,801.1	1,560.1	1,218.0
Long-lived assets	589.3				554.8				589.3	554.8	384.6
South Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									858.8	877.6	948.2
Long-lived assets	235.1				244.2				235.1	244.2	208.0
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									978.4	920.2	805.6
Long-lived assets	223.1				201.2				223.1	201.2	136.2
Other Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									475.9	425.9	393.1
Long-lived assets	$ 150.8				157.3				$ 150.8	157.3	143.5
NSK Warner [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity Method Investment, Ownership Percentage	50.00%								50.00%
Investment in NSK-Warner	$ 184.1				$ 185.1				$ 184.1	$ 185.1	$ 172.9