Financial Instruments and Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended				9 Months Ended
	Jun. 30, 2023	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Fair Value by Fair Value Hierarchy Level [Line Items]
Investment		$ 54.2				$ 54.2
Unfunded commitments		41.1				41.1
Capital contributions		0.1				16.9
Unrealized gain (loss) on investments		2.3		$ 0.0		7.3	$ 0.0
Proceeds from non marketable securities					$ 38.0
Impairment charges on investment			$ 5.0
Carrying amount of investments		33.0				$ 33.0
Minimum
Fair Value by Fair Value Hierarchy Level [Line Items]
Investment fund, term						7 years
Investment fund, option to extend, term						2 years
Maximum
Fair Value by Fair Value Hierarchy Level [Line Items]
Investment fund, term						10 years
Investment fund, option to extend, term						3 years
Fair Value Measured at Net Asset Value Per Share
Fair Value by Fair Value Hierarchy Level [Line Items]
Equity securities without readily determinable fair value		54.2				$ 54.2		$ 32.3
Interest rate swap
Fair Value by Fair Value Hierarchy Level [Line Items]
Derivative, cash received	$ 12.2
Derivative, notional amount		1,700.0				1,700.0
Derivative, gain on derivative, net		$ 0.0				$ 15.8