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Debt - Narrative (Details) - USD ($)	1 Months Ended			3 Months Ended	6 Months Ended
Debt - Narrative (Details) - USD ($)	Jun. 30, 2024	May 31, 2024	Mar. 31, 2024	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023
Long-Term Debt
Loss on extinguishment of debt					$ 133,000,000	$ 44,000,000
Minimum \| Contract With Customer, Liability, Up-Front Payment Arrangement
Long-Term Debt
Credit agency fees, percentage of loan amount payable					2.35%
Maximum \| Contract With Customer, Liability, Up-Front Payment Arrangement
Long-Term Debt
Credit agency fees, percentage of loan amount payable					5.48%
Export Credit Facilities
Long-Term Debt
Repayment of debt				$ 839,000,000
Unsecured senior notes \| Senior Notes Due 2032
Long-Term Debt
Face amount			$ 1,250,000,000
Proceeds from senior notes			$ 1,240,000,000
Fixed interest rate			6.25%
Unsecured senior notes \| Senior Notes Due 2027
Long-Term Debt
Fixed interest rate			11.625%
Repayment of debt			$ 1,250,000,000
Loss on extinguishment of debt					$ 116,000,000
Unsecured term loans \| Silver Ray Unsecured Term Loan
Long-Term Debt
Proceeds from senior notes		$ 507,000,000
Fixed interest rate		4.33%
Debt instrument, term (in years)		12 years
Unsecured term loans \| Silver Ray Unsecured Term Loan \| Euler Hermes
Long-Term Debt
Percentage of unsecured term loan guaranteed by an export credit agency		95.00%
Unsecured term loans \| Utopia of the Seas Unsecured Term Loan
Long-Term Debt
Proceeds from senior notes	$ 1,500,000,000
Fixed interest rate	3.00%			3.00%	3.00%
Debt instrument, term (in years)	12 years
Unsecured term loans \| Utopia of the Seas Unsecured Term Loan \| Bpifrance Assurance Export
Long-Term Debt
Percentage of unsecured term loan guaranteed by an export credit agency	100.00%
Revolving Credit Facility \| Line of Credit
Long-Term Debt
Remaining borrowing capacity	$ 3,400,000,000			$ 3,400,000,000	$ 3,400,000,000
Revolving Credit Facility \| Line of Credit \| Aggregate Revolving Capacity, October 2024
Long-Term Debt
Maximum borrowing capacity	3,700,000,000			3,700,000,000	3,700,000,000
Revolving Credit Facility \| Line of Credit \| Aggregate Revolving Capacity, October 2026
Long-Term Debt
Maximum borrowing capacity	1,860,000,000			1,860,000,000	1,860,000,000
Revolving Credit Facility \| Line of Credit \| Aggregate Revolving Capacity, October 2028
Long-Term Debt
Maximum borrowing capacity	$ 1,860,000,000			$ 1,860,000,000	$ 1,860,000,000