Supplemental Cash Flow Information - Schedule of Non Cash Investing and Financing Activities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for:
Interest	$ 72.8	$ 115.3
Income taxes	42.4	48.7
Non-cash investing/financing activities:
Property and equipment acquired through capital leases	6.5	8.0
Deferred and contingent acquisition payment obligations	31.5	12.3
Increase in beneficial interest in a securitization	$ 13.8	$ 4.1