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Debt - Schedule of Convertible Securities (Details) - Junior convertible securities - Junior Convertible Trust Preferred Securities - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Debt Instrument [Line Items]
Contractual interest expense	$ 4.4	$ 5.0
Amortization of debt issuance costs	0.1	0.1
Total	$ 4.5	$ 5.1
Effective interest rate	5.21%	5.24%

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Amount of amortization expense attributable to debt issuance costs.

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