Commitments and Contingencies - Future Commitments (Details)	Jun. 30, 2019 berth
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	31,700
Royal Caribbean International | Oasis-class
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,700
Royal Caribbean International | Odyssey of the Seas
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	4,200
Royal Caribbean International | Icon Class Ship One
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,600
Royal Caribbean International | Icon Class Ship Two
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	5,600
Celebrity Cruises | Celebrity Apex
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	2,900
Celebrity Cruises | Edge Class Ship One
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	3,250
Celebrity Cruises | Edge Class Ship Two
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	3,250
Silversea Cruises | Silver Origin
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	100
Silversea Cruises | Silver Moon
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	550
Silversea Cruises | Silver Dawn
Long-term Purchase Commitment [Line Items]
Ship passenger capacity berths	550