CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Lower of cost or market adjustment on a portion of unsecured loan portfolio held for sale	$ 268.4	$ 104.4	$ 331.3	$ 172.0