Contingencies - Paddock Enterprises, LLC (Details) - USD ($) $ in Millions		12 Months Ended
	Jul. 18, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jul. 22, 2022	Jul. 20, 2022	Jul. 08, 2022
Loss contingencies
Remaining assets		$ 9,669.0	$ 9,061.0	$ 8,832.0
Cash and cash equivalents		913.0	773.0
Operating cash outflow		$ 818.0	154.0	687.0
Charge related to Paddock support agreement liability				$ 154.0
Total consideration ("Settlement Consideration")							$ 610.0
Paddock
Loss contingencies
Remaining assets						$ 18.0
Liabilities						30.0
Cash and cash equivalents						$ 12.0
Operating cash outflow			$ 621.0
Face value	$ 8.5
Funding to trust	601.5
Funding to trust through borrowings	600.0
Funding to trust through cash	$ 1.5
Total consideration ("Settlement Consideration")					$ 8.5