Commitments and Contingencies (Narrative) (Details)	1 Months Ended			12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019 agreement	Aug. 31, 2019 lawsuit	Dec. 31, 2020 USD ($) berth ship	Dec. 31, 2017 EUR (€) ship	Dec. 31, 2015 berth	Dec. 31, 2020 EUR (€) berth ship
Commitments and Contingencies
Approximate berths				51,980			51,980
Fixed interest rate on long-term debt	62.10%			64.50%			64.50%
Aggregate cost of ships expected to enter service | $				$ 14,200,000,000
Deposit for the purchase of ships expected to enter service | $				$ 684,800,000
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate	65.90%			66.30%			66.30%
Number of claims filed | lawsuit			2
Icon-class ships
Commitments and Contingencies
Number of ships under construction | ship					2
Icon Class, Unnamed Ship One
Commitments and Contingencies
Approximate berths				5,600			5,600
Icon Class, Unnamed Ship Two
Commitments and Contingencies
Approximate berths				5,600			5,600
Third and Fourth Edge Class Ships and Fifth Oasis Class Ship
Commitments and Contingencies
Bank financing commitment percentage					80.00%
Third Edge Class Ship
Commitments and Contingencies
Approximate berths				3,250			3,250
Fourth Edge Class Ship
Commitments and Contingencies
Approximate berths				3,250			3,250
Fifth Oasis Class Ship
Commitments and Contingencies
Approximate berths				5,700			5,700
Quantum Class Fifth Ship
Commitments and Contingencies
Approximate berths						4,200
Sixth Oasis Class Ship Term Loan | Sixth Oasis Class Ship
Commitments and Contingencies
Bank financing commitment percentage	80.00%
Third Icon Class Ship Term Loan | Third Icon Class Ship
Commitments and Contingencies
Bank financing commitment percentage	80.00%
Quantum of the Seas unsecured term loans | Quantum Class Fifth Ship
Commitments and Contingencies
Bank financing commitment percentage						80.00%
Unsecured term loan, construction financing commitment per ship				$ 951,200,000			€ 777,500,000
Unsecured term loan, amortization period				12 years
Long term debt, stated interest rate (as a percent)				3.45%			3.45%
Credit agreement
Commitments and Contingencies
Number of months considered to determine requirement of prepayment of debts				24 months
LIBOR | Quantum of the Seas unsecured term loans | Quantum Class Fifth Ship
Commitments and Contingencies
Margin on floating rate base (as a percent)				0.95%
Royal Caribbean International | Sixth Oasis Class Ship
Commitments and Contingencies
Approximate berths				5,700			5,700
Royal Caribbean International | Third Icon Class Ship
Commitments and Contingencies
Approximate berths				5,600			5,600
Royal Caribbean International | Cruise ships on order | Quantum-class ship
Commitments and Contingencies
Number of ships under construction | ship				1			1
Royal Caribbean International | Cruise ships on order | Oasis-class ship
Commitments and Contingencies
Number of ships under construction | ship				2			2
Royal Caribbean International | Cruise ships on order | Icon-class ships
Commitments and Contingencies
Number of ships under construction | ship				3			3
Approximate berths				32,400			32,400
Royal Caribbean International | Cruise ships on order | Silversea Cruises
Commitments and Contingencies
Number of ships under construction | ship				3			3
Approximate berths				1,750			1,750
Celebrity Cruise Ships | Cruise ships on order | Three project edge class ships
Commitments and Contingencies
Number of ships under construction | ship				2			2
Approximate berths				6,500			6,500
Silversea Cruises | Evolution Class, Unnamed Ship One
Commitments and Contingencies
Approximate berths				600			600
Silversea Cruises | Evolution Class, Unnamed Ship Two
Commitments and Contingencies
Approximate berths				600			600
Euler Hermes | Third Icon Class Ship
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency	95.00%
Euler Hermes | Quantum of the Seas unsecured term loans | Quantum Class Fifth Ship
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency						95.00%
BpiFAE | Sixth Oasis Class Ship
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency	100.00%
BpiFAE | Third and Fourth Edge Class Ships and Fifth Oasis Class Ship
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency					100.00%
Finnvera | Third Icon Class Ship
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency	95.00%
Finnvera | Icon Class, Unnamed Ship One
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency					100.00%
Minimum | Debt Securities
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person				50.00%			50.00%
Minimum | Credit agreement
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person				50.00%			50.00%
Unsecured term loans | Sixth Oasis Class Ship Term Loan | Sixth Oasis Class Ship
Commitments and Contingencies
Unsecured term loan, construction financing commitment per ship				$ 1,600,000,000			€ 1,300,000,000
Unsecured term loan, amortization period				12 years
Long term debt, stated interest rate (as a percent)				3.00%			3.00%
Unsecured term loans | Third Icon Class Ship Term Loan | Third Icon Class Ship
Commitments and Contingencies
Unsecured term loan, construction financing commitment per ship				$ 1,700,000,000			€ 1,400,000,000
Unsecured term loan, amortization period				12 years
Percentage of debt bearing fixed interest				60.00%			60.00%
Fixed interest rate on long-term debt				3.29%			3.29%
Unsecured term loans | Icon Class, Ship One Credit Agreement | Icon Class, Unnamed Ship One
Commitments and Contingencies
Bank financing commitment percentage					80.00%
Unsecured term loan, amortization period				12 years
Long term debt, stated interest rate (as a percent)				3.56%			3.56%
Percentage of debt bearing fixed interest				75.00%			75.00%
Maximum borrowing capacity				$ 1,700,000,000			€ 1,400,000,000
Unsecured term loans | Icon Class, Ship Two Credit Agreement | Icon Class, Unnamed Ship Two
Commitments and Contingencies
Bank financing commitment percentage					80.00%
Unsecured term loan, amortization period				12 years
Long term debt, stated interest rate (as a percent)				3.76%			3.76%
Percentage of debt bearing fixed interest				75.00%			75.00%
Maximum borrowing capacity				$ 1,700,000,000			€ 1,400,000,000
Unsecured term loans | Third and Fourth Edge-class ships and Fifth Oasis-class ship
Commitments and Contingencies
Unsecured term loan, amortization period				12 years
Unsecured term loans | Third and Fourth Edge-class ships and Fifth Oasis-class ship | Third Edge Class Ship
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)				1.28%			1.28%
Maximum borrowing capacity | €					€ 684,200,000
Unsecured term loans | Third and Fourth Edge-class ships and Fifth Oasis-class ship | Fourth Edge Class Ship
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)				3.18%			3.18%
Maximum borrowing capacity				$ 874,200,000			€ 714,600,000
Unsecured term loans | Third and Fourth Edge-class ships and Fifth Oasis-class ship | Fifth Oasis Class Ship
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)				3.18%			3.18%
Maximum borrowing capacity				$ 1,300,000,000			€ 1,100,000,000
Unsecured term loans | Silver Moon Credit Agreement
Commitments and Contingencies
Long-term debt | $				$ 300,000,000
Unsecured term loans | LIBOR | Third Icon Class Ship Term Loan | Third Icon Class Ship
Commitments and Contingencies
Margin on floating rate base (as a percent)				0.85%
Unsecured term loans | LIBOR | Silver Moon Credit Agreement
Commitments and Contingencies
Margin on floating rate base (as a percent)				2.00%
Unsecured term loans | Silversea Cruises | Evolution Class, Ship One Credit Agreement | Evolution Class, Unnamed Ship One
Commitments and Contingencies
Bank financing commitment percentage		80.00%
Unsecured term loan, construction financing commitment per ship				$ 430,100,000			€ 351,600,000
Unsecured term loan, amortization period				12 years
Long term debt, stated interest rate (as a percent)				4.14%			4.14%
Unsecured term loans | Silversea Cruises | Evolution Class Ship Two Credit Agreement | Evolution Class, Unnamed Ship Two
Commitments and Contingencies
Bank financing commitment percentage		80.00%
Unsecured term loan, construction financing commitment per ship				$ 439,200,000			€ 359,000,000.0
Unsecured term loan, amortization period				12 years
Long term debt, stated interest rate (as a percent)				4.18%			4.18%
Unsecured term loans | Silversea Cruises | Credit agreement
Commitments and Contingencies
Number of credit agreements | agreement		2
Unsecured term loans | Silversea Cruises | LIBOR | Evolution Class, Ship One Credit Agreement | Evolution Class, Unnamed Ship One
Commitments and Contingencies
Margin on floating rate base (as a percent)				0.79%
Unsecured term loans | Silversea Cruises | LIBOR | Evolution Class Ship Two Credit Agreement | Evolution Class, Unnamed Ship Two
Commitments and Contingencies
Margin on floating rate base (as a percent)				0.83%
Unsecured term loans | Euler Hermes
Commitments and Contingencies
Percentage of unsecured term loan guaranteed by an export credit agency		95.00%			95.00%
Unsecured term loans | Minimum
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)				2.53%			2.53%
Unsecured term loans | Minimum | LIBOR | Icon Class, Ship One Credit Agreement | Icon Class, Unnamed Ship One
Commitments and Contingencies
Margin on floating rate base (as a percent)				1.10%
Unsecured term loans | Minimum | LIBOR | Icon Class, Ship Two Credit Agreement | Icon Class, Unnamed Ship Two
Commitments and Contingencies
Margin on floating rate base (as a percent)				1.15%
Unsecured term loans | Maximum
Commitments and Contingencies
Long term debt, stated interest rate (as a percent)				5.41%			5.41%
Unsecured term loans | Maximum | LIBOR | Icon Class, Ship One Credit Agreement | Icon Class, Unnamed Ship One
Commitments and Contingencies
Margin on floating rate base (as a percent)				1.15%
Unsecured term loans | Maximum | LIBOR | Icon Class, Ship Two Credit Agreement | Icon Class, Unnamed Ship Two
Commitments and Contingencies
Margin on floating rate base (as a percent)				1.20%