Commitments and Contingencies (Narrative) (Details)			1 Months Ended				3 Months Ended		9 Months Ended	12 Months Ended
		Dec. 31, 2023 USD ($) berth ship	Oct. 31, 2023 USD ($)	Sep. 30, 2021 EUR (€)	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2023	Dec. 31, 2022 USD ($)	Sep. 30, 2021	Dec. 31, 2023 USD ($) berth ship	Dec. 31, 2017	Dec. 31, 2023 EUR (€) berth ship
Commitments and Contingencies
Approximate berths		31,980								31,980		31,980
Aggregate cost of ships expected to enter service | $										$ 7,900,000,000
Deposit for the purchase of ships expected to enter service | $		$ 698,000,000								$ 698,000,000
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate		43.50%						52.30%		43.50%		43.50%
Plaintiff and awarded damages and attorneys' fees | $										$ 112,000,000
Litigation charge | $								$ 130,000,000
Sixth Oasis Class Ship Term Loan | Utopia of the Seas
Commitments and Contingencies
Bank financing commitment percentage					80.00%
Credit agreement
Commitments and Contingencies
Number of months considered to determine requirement of prepayment of debts										24 months
Cruise ships on order
Commitments and Contingencies
Number of ships under construction | ship		8								8		8
Royal Caribbean International | Utopia of the Seas
Commitments and Contingencies
Approximate berths		5,700								5,700		5,700
Royal Caribbean International | Third Icon Class Ship
Commitments and Contingencies
Approximate berths		5,600								5,600		5,600
Royal Caribbean International | Star of the Seas
Commitments and Contingencies
Approximate berths		5,600								5,600		5,600
Royal Caribbean International | Cruise ships on order | Oasis-class ship
Commitments and Contingencies
Number of ships under construction | ship		1								1		1
Royal Caribbean International | Cruise ships on order | Icon-class ships
Commitments and Contingencies
Number of ships under construction | ship		2								2		2
Approximate berths		16,900								16,900		16,900
Celebrity Cruise Ships | Cruise ships on order | One Project Edge Class Ship
Commitments and Contingencies
Number of ships under construction | ship		1								1		1
Approximate berths		3,250								3,250		3,250
Silversea Cruises | Evolution Class, Silver Ray
Commitments and Contingencies
Approximate berths		730								730		730
Silversea Cruises | Cruise ships on order | Silversea Cruises
Commitments and Contingencies
Number of ships under construction | ship		1								1		1
Approximate berths		730								730		730
Celebrity Cruises | Celebrity Xcel
Commitments and Contingencies
Approximate berths		3,250								3,250		3,250
BpiFAE | Celebrity Xcel
Commitments and Contingencies
Approximate berths		3,250								3,250		3,250
Minimum | Debt Securities
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person		50.00%								50.00%		50.00%
Minimum | Credit agreement
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person		50.00%								50.00%		50.00%
Unsecured term loans | Fifth Edge-Class Ship Commitment | Celebrity Xcel
Commitments and Contingencies
Bank financing commitment percentage							80.00%
Unsecured term loan, construction financing commitment per ship		$ 939,000,000								$ 939,000,000		€ 850,000,000
Debt instrument, term (in years)										12 years
Unsecured term loans | Evolution Class Ship Two Credit Agreement | Evolution Class, Silver Ray
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)				4.38%					4.38%
Increase in loan amounts		194,000,000		€ 176,000,000
Increase on term loan maximum borrowing commitment | $		34,000,000	$ 30,000,000							$ 34,000,000
Fixed interest rate on unborrowed funds			6.80%
Unsecured term loans | Sixth Oasis Class Ship Term Loan | Utopia of the Seas
Commitments and Contingencies
Unsecured term loan, construction financing commitment per ship		$ 1,400,000,000								$ 1,400,000,000		€ 1,300,000,000
Debt instrument, term (in years)										12 years
Long term debt, stated interest rate (as a percent)		3.00%								3.00%		3.00%
Unsecured term loans | Third Icon Class Ship Term Loan | Third Icon Class Ship
Commitments and Contingencies
Bank financing commitment percentage					80.00%
Unsecured term loan, construction financing commitment per ship		$ 1,500,000,000								$ 1,500,000,000		€ 1,400,000,000
Debt instrument, term (in years)										12 years
Long term debt, stated interest rate (as a percent)		3.29%								3.29%		3.29%
Percentage of debt bearing fixed interest		60.00%								60.00%		60.00%
Unsecured term loans | Icon Class, Ship Two Credit Agreement | Star of the Seas
Commitments and Contingencies
Bank financing commitment percentage											80.00%
Debt instrument, term (in years)										12 years
Long term debt, stated interest rate (as a percent)		3.76%								3.76%		3.76%
Percentage of debt bearing fixed interest		75.00%								75.00%		75.00%
Maximum borrowing capacity		$ 1,500,000,000								$ 1,500,000,000		€ 1,400,000,000
Unsecured term loans | Term SOFR | Evolution Class Ship Two Credit Agreement | Evolution Class, Silver Ray
Commitments and Contingencies
Margin on floating rate base (as a percent)			1.40%						1.46%	1.26%
Unsecured term loans | Term SOFR | Third Icon Class Ship Term Loan | Third Icon Class Ship
Commitments and Contingencies
Margin on floating rate base (as a percent)										1.28%
Unsecured term loans | Silversea Cruises | Evolution Class Ship Two Credit Agreement | Evolution Class, Silver Ray
Commitments and Contingencies
Bank financing commitment percentage						80.00%
Unsecured term loan, construction financing commitment per ship		$ 397,000,000								$ 397,000,000		€ 359,000,000
Debt instrument, term (in years)										12 years
Long term debt, stated interest rate (as a percent)		4.18%								4.18%		4.18%
Unsecured term loans | BpiFAE | Fifth Edge-Class Ship Commitment | Celebrity Xcel
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency							100.00%
Unsecured term loans | BpiFAE | Sixth Oasis Class Ship Term Loan | Utopia of the Seas
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency					100.00%
Unsecured term loans | BpiFAE | Term SOFR | Fifth Edge-Class Ship Commitment | Celebrity Xcel
Commitments and Contingencies
Margin on floating rate base (as a percent)										1.45%
Unsecured term loans | Euler Hermes | Evolution Class Ship Two Credit Agreement
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency						95.00%
Unsecured term loans | Euler Hermes | Third Icon Class Ship Term Loan | Third Icon Class Ship
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency					95.00%
Unsecured term loans | Euler Hermes | Icon Class, Ship Two Credit Agreement | Star of the Seas
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency											95.00%
Unsecured term loans | Finnvera | Third Icon Class Ship Term Loan | Third Icon Class Ship
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency					95.00%
Unsecured term loans | Finnvera | Icon Class, Ship Two Credit Agreement | Star of the Seas
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency											100.00%
Unsecured term loans | Minimum
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)	[1]	1.28%								1.28%		1.28%
Unsecured term loans | Minimum | Term SOFR | Icon Class, Ship Two Credit Agreement | Star of the Seas
Commitments and Contingencies
Margin on floating rate base (as a percent)										1.58%
Unsecured term loans | Maximum
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)	[1]	5.89%								5.89%		5.89%
Unsecured term loans | Maximum | Term SOFR | Icon Class, Ship Two Credit Agreement | Star of the Seas
Commitments and Contingencies
Margin on floating rate base (as a percent)										1.63%

[1] Interest rates based on outstanding loan balance as of December 31, 2023, and for variable rate debt, includes either EURIBOR or Term SOFR plus the applicable margin.