Investments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Mastery Logistics Systems, Inc.
Schedule of Equity Method Investments [Line Items]
Payments to acquire additional interest in investment	$ 20.0
Fair value of investment	86.8		$ 86.8		$ 38.2
Gain on investments in equity securities, net	28.6		28.6
Cumulative unrealized gain on interest in investment	56.8		56.8
Gain on investments in equity securities, net		$ 0.0		$ 0.0
Investments in Autonomous Technology Companies
Schedule of Equity Method Investments [Line Items]
Gain on investments in equity securities, net		$ 20.2		$ 20.2
Unrealized loss on interest in investment	$ 4.5		$ 14.3