Balance Sheet Information - Equity Method Investment (Details) - NSK Warner [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Joint Venture Partner Interest In Subsidiary	40.00%
Equity Method Investment, Dividends or Distributions	$ 40.5	$ 20.2	$ 34.3
Equity Method Investment, Summarized Financial Information [Abstract]
Cash and securities	116.6	104.6
Current assets, including cash and securities	316.9	289.2
Non-current assets	283.3	231.9
Current liabilities	215.3	154.9
Non-current liabilities	88.9	68.1
Total equity	296.0	298.1
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Net sales	731.8	669.6	601.8
Gross profit	152.3	149.2	134.1
Net earnings	86.4	85.2	71.7
Purchases from Equity Method Investee	$ 9.7	$ 12.3	$ 23.9