Sale of Accounts Receivable (Details) - USD ($) $ in Billions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Sale of Accounts Receivable [Abstract]
Servicing liability	$ 0.0	$ 0.0	$ 0.0	$ 0.0
Trade receivables sold and derecognized from the Consolidated Balance Sheets			8.4	7.8
Trade receivables sold and derecognized that remain uncollected	0.6	0.6	0.6	$ 0.6
Loss on sale of trade receivables	$ 0.0	$ 0.0	$ 0.0