General Information - Accounts Receivable and Allowances (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Receivables Sold and Derecognized	$ 610.2	$ 811.2
Proceeds Collected on Behalf of Financial Institutions	608.8	504.1
Net Proceeds Paid to Financial Institutions	(4.7)	(28.8)
Deferred Purchase Price	6.7	4.3
Pledged Receivables at March 31	263.5	144.2
Receivables sold	72.0	$ 37.0
Amount transferred subject to continuing involvement	$ 563.0		$ 562.0