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Long-Term Debt - 6.750% Senior Unsecured Notes due 2025 (Details) - USD ($)		1 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Unpaid interest			$ 169,600,000	$ 218,700,000	$ 194,300,000
Senior Notes | 6.750% Senior Unsecured Notes due 2025
Debt Instrument [Line Items]
Stated interest rate (percent)	6.75%		6.75%
Original balance of debt	$ 370,000,000
Redemption price, percentage (percent)		100.00%	100.00%
Repayments of unsecured notes		$ 185,000,000
Unpaid interest		$ 6,200,000
Senior Notes | 6.750% Senior Unsecured Notes due 2025 | Redemption Period Three
Debt Instrument [Line Items]
Redemption price, percentage (percent)	101.00%

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