Cash Flow Information - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Capital expenditures accrued	$ 5.2	$ 9.2
Cash paid for interest	125.3	128.6	$ 117.1
Cash paid for taxes, net of refunds	$ 48.3	$ 40.8	$ 61.0