Consolidated Statements of Cash Flows Parenthetical - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Payments to Acquire Leasing Assets Net of Sold Railcars Owned One Year or Less Net Cost	$ 54.0	$ 319.3	$ 92.4