Reserves for Credit Losses (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jan. 01, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Balance, January 1	$ 10.0
Balance, March 31	18.0
Recoveries	0.5	$ 0.3
Accounting Standards Update 2016-13 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance, January 1	17.0	5.0
Provisions	3.0	3.0
Net write-offs	(2.0)	(2.0)
Balance, March 31	$ 18.0	$ 6.0
Increase related to adoption of CECL methodology			$ 7.0