Debt - Schedule of Convertible Securities (Details) - Junior Convertible Trust Preferred Securities - Junior convertible securities - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Contractual interest expense	$ 4.4	$ 4.4	$ 13.2	$ 13.2
Amortization of debt issuance costs	0.1	0.1	0.2	0.2
Total	$ 4.5	$ 4.5	$ 13.4	$ 13.4
Effective interest rate	5.21%	5.21%	5.21%	5.21%