Commitment and Contingencies - Capital Commitments (Details)	Sep. 30, 2021 berth
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	47,860
Evolution Class, Unnamed Ship One
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	730
Evolution Class, Unnamed Ship Two
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	730
Royal Caribbean International | Wonder of the Seas
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,700
Royal Caribbean International | Oasis Class Ship
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,700
Royal Caribbean International | Icon Class, Unnamed Ship One
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,600
Royal Caribbean International | Icon Class, Unnamed Ship Two
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,600
Royal Caribbean International | Icon Class, Unnamed Ship Three
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,600
Celebrity Cruises | Celebrity Beyond
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	3,250
Celebrity Cruises | Edge Class, Unnamed
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	3,250
Silversea Cruises | Silver Dawn
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	600	[1]
Silversea Cruises | Evolution Class, Unnamed Ship One
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	730	[1]
Silversea Cruises | Evolution Class, Unnamed Ship Two
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	730	[1]
TUI Cruises | Mein Schiff 7
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	2,900
TUI Cruises | TUI Cruises, Unnamed Ship One
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	4,100
TUI Cruises | TUI Cruises, Unnamed Ship Two
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	4,100

[1] The revenue impact from Silversea Cruises' new ships will be recognized on a three-month reporting lag from when the ships enter service. Refer to Note 1. General for further information.