Long-Term Debt and Credit Facilities - Revolving Letters of Credit and Senior Notes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Senior Notes
Long-term Debt and Credit Facilities
Redemption price (as a percent)	101.00%
Letter of Credit | Uncommitted Revolving Letter of Credit Facility
Long-term Debt and Credit Facilities
Maximum borrowing capacity	$ 225,000,000
Letter of Credit | Committed Facility and Various Other Facilities
Long-term Debt and Credit Facilities
Letters of credit outstanding	40,000,000	$ 94,000,000
Revolving Credit Facility
Long-term Debt and Credit Facilities
Letters of credit outstanding	$ 218,000,000	$ 0