Acquisitions and Divestitures (Details) - Investing and Servicing Segment - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Acquisitions and Divestitures
Proceeds from sale of property	$ 24.1	$ 0.0	$ 24.1	$ 0.0
Gain on sale of property	$ 7.4		$ 7.4