General Information - Accounts Receivable and Allowances (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Receivables Sold and Derecognized	$ 1,357.1	$ 1,410.2
Proceeds Collected on Behalf of Financial Institutions	1,318.0	1,077.2
Net Proceeds Received From (Paid to) Financial Institutions	30.7	(3.6)
Deferred Purchase Price at June 30	9.7	5.2
Pledged Receivables at June 30	260.7	124.0
Receivables sold	151.0	$ 73.0
Amount transferred subject to continuing involvement	$ 600.0		$ 562.0