Commitments and Contingencies - Narrative (Details) € in Millions		1 Months Ended				6 Months Ended	85 Months Ended	109 Months Ended
		Dec. 31, 2019 EUR (€) berth	Sep. 30, 2019 EUR (€) berth agreement	Aug. 31, 2019 lawsuit	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) berth ship	Jun. 30, 2026	Jun. 30, 2028
Commitments and Contingencies
Ship passenger capacity berths						52,530
Fixed interest rate on long-term debt		62.10%				66.30%
Number of claims filed | lawsuit				2
Number of months considered to determine requirement of prepayment of debts						24 months
Cruise ships on order
Commitments and Contingencies
Aggregate cost of ships on order, not including TUI cruises on order | $						$ 13,900,000,000
Deposit for the purchase of ships expected to enter service | $						$ 833,100,000
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate		65.90%				62.50%
Unsecured term loans | Minimum
Commitments and Contingencies
Interest rate	[1]					2.53%
Silver Moon Credit Agreement | Unsecured term loans
Commitments and Contingencies
Debt instrument, face amount | $					$ 300,000,000
Silver Moon Credit Agreement | Unsecured term loans | Scenario, Forecast
Commitments and Contingencies
Repayment advance notice							90 days
Periodic payment, percentage of principal								4.17%
Silver Moon Credit Agreement | Unsecured term loans | LIBOR
Commitments and Contingencies
Debt instrument, basis spread on variable rate					1.50%
Line of Credit | Minimum
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person						50.00%
Sixth Oasis Class Ship Term Loan | Sixth Oasis Class Ship
Commitments and Contingencies
Bank financing commitment percentage		80.00%
Sixth Oasis Class Ship Term Loan | Unsecured term loans | Sixth Oasis Class Ship
Commitments and Contingencies
Unsecured term loan, construction financing commitment per ship		€ 1,300.0				$ 1,500,000,000
Unsecured term loan, amortization period		12 years
Interest rate		3.00%
Third Icon Class Ship Term Loan | Icon Class, Ship Three
Commitments and Contingencies
Bank financing commitment percentage		80.00%
Third Icon Class Ship Term Loan | Unsecured term loans | Icon Class, Ship Three
Commitments and Contingencies
Unsecured term loan, construction financing commitment per ship		€ 1,400.0				$ 1,600,000,000
Unsecured term loan, amortization period		12 years
Percentage of debt bearing fixed interest		60.00%
Fixed interest rate on long-term debt		3.29%
Third Icon Class Ship Term Loan | Unsecured term loans | Icon Class, Ship Three | LIBOR
Commitments and Contingencies
Debt instrument, basis spread on variable rate		0.85%
Debt Securities | Minimum
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person						50.00%
Royal Caribbean International Cruise Ships | Cruise ships on order
Commitments and Contingencies
Ship passenger capacity berths						32,400
Royal Caribbean International Cruise Ships | Quantum Class Ship | Cruise ships on order
Commitments and Contingencies
Number of ships under construction | ship						1
Royal Caribbean International Cruise Ships | Oasis Class Ship | Cruise ships on order
Commitments and Contingencies
Number of ships under construction | ship						2
Royal Caribbean International Cruise Ships | Project Icon Ships | Cruise ships on order
Commitments and Contingencies
Number of ships under construction | ship						3
Royal Caribbean International Cruise Ships | Sixth Oasis Class Ship
Commitments and Contingencies
Ship passenger capacity berths		5,700
Royal Caribbean International Cruise Ships | Icon Class, Ship Three
Commitments and Contingencies
Ship passenger capacity berths		5,600
Celebrity Cruises | Edge Class Ships | Cruise ships on order
Commitments and Contingencies
Number of ships under construction | ship						2
Ship passenger capacity berths						6,500
Silversea Cruises | Silversea Cruises | Cruise ships on order
Commitments and Contingencies
Number of ships under construction | ship						4
Ship passenger capacity berths						2,300
Silversea Cruises | Evolution Class, Unnamed Ship One
Commitments and Contingencies
Ship passenger capacity berths			600			600
Silversea Cruises | Evolution Class, Unnamed Ship Two
Commitments and Contingencies
Ship passenger capacity berths			600			600
Silversea Cruises | Line of Credit | Unsecured term loans
Commitments and Contingencies
Number of credit agreements | agreement			2
Silversea Cruises | Evolution Class, Ship One Credit Agreement | Unsecured term loans | Evolution Class, Unnamed Ship One
Commitments and Contingencies
Bank financing commitment percentage			80.00%
Unsecured term loan, construction financing commitment per ship			€ 351.6			$ 394,800,000
Unsecured term loan, amortization period			12 years
Interest rate			4.14%
Silversea Cruises | Evolution Class, Ship One Credit Agreement | Unsecured term loans | Evolution Class, Unnamed Ship One | LIBOR
Commitments and Contingencies
Debt instrument, basis spread on variable rate			0.79%
Silversea Cruises | Evolution Class Ship Two Credit Agreement | Unsecured term loans | Evolution Class, Unnamed Ship Two
Commitments and Contingencies
Bank financing commitment percentage			80.00%
Unsecured term loan, construction financing commitment per ship			€ 359.0			$ 403,100,000
Unsecured term loan, amortization period			12 years
Interest rate			4.18%
Silversea Cruises | Evolution Class Ship Two Credit Agreement | Unsecured term loans | Evolution Class, Unnamed Ship Two | LIBOR
Commitments and Contingencies
Debt instrument, basis spread on variable rate			0.83%
Euler Hermes | Icon Class, Ship Three
Commitments and Contingencies
Percentage guaranteed by export credit agency		95.00%
Euler Hermes | Unsecured term loans
Commitments and Contingencies
Percentage guaranteed by export credit agency			95.00%
Bpifrance Assurance Export | Sixth Oasis Class Ship
Commitments and Contingencies
Percentage guaranteed by export credit agency		100.00%
Finnvera plc | Icon Class, Ship Three
Commitments and Contingencies
Percentage guaranteed by export credit agency		95.00%

[1] Interest rates based on outstanding loan balance as of June 30, 2020 and, for variable rate debt, include either LIBOR or EURIBOR plus the applicable margin.