Contingencies - Summary of Insurance Receivable Balances and Activity Related to Cumulative Trauma Product Liability Losses (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]
Balance beginning of period	$ 71.7	$ 134.7
Additions	0.8	19.6
Collections, settlements converted to notes receivable and other adjustments	(12.6)	(82.6)
Balance end of period	$ 59.9	$ 71.7