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Debt - Remaining principal payments under debt agreement (Details) $ in Millions	Mar. 31, 2023 USD ($)
Term loan
Debt Instrument [Line Items]
2023	$ 8.4
2024	8.4
2025	120.0
2026	0.0
2027	0.0
Thereafter	0.0
Senior notes | Unsecured Debt
Debt Instrument [Line Items]
2023	0.0
2024	0.0
2025	0.0
2026	0.0
2027	0.0
Thereafter	$ 400.0

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