Debt Instrument Covenant Change Of Control Percentage Of Acquired Ownership By Any Person.

No definition available.

Name:	rcl_DebtInstrumentCovenantChangeOfControlPercentageOfAcquiredOwnershipByAnyPerson
Namespace Prefix:	rcl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of months which are considered to determine whether there is a requirement to prepay the debts outstanding under the majority of credit facilities of the entity.

+ References

No definition available.

+ Details

Name:	rcl_NumberOfMonthsConsideredToDetermineRequirementOfPrepaymentOfDebts
Namespace Prefix:	rcl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of ship under construction.

+ References

No definition available.

+ Details

Name:	rcl_NumberOfShipsUnderConstruction
Namespace Prefix:	rcl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of Aggregate Cost Exposed to Fluctuations in the Euro Exchange Rate.

+ References

No definition available.

+ Details

Name:	rcl_PercentageOfAggregateCostExposedToFluctuationsInEuroExchangeRate
Namespace Prefix:	rcl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Purchase Contract, Deposit.

+ References

No definition available.

+ Details

Name:	rcl_PurchaseContractDeposit
Namespace Prefix:	rcl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Ship Passenger Capacity Berths.

+ References

No definition available.

+ Details

Name:	rcl_ShipPassengerCapacityBerths
Namespace Prefix:	rcl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis=us-gaap_CapitalAdditionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=rcl_PortofMiamiTerminalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=rcl_RoyalCaribbeanInternationalCruiseShipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rcl_CruiseShipsOnOrderAxis=rcl_QuantumClassShipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rcl_CruiseShipsOnOrderAxis=rcl_OasisClassShipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rcl_CruiseShipsOnOrderAxis=rcl_ProjectIconshipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=rcl_CelebrityCruiseShipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rcl_CruiseShipsOnOrderAxis=rcl_ProjectEdgeClassShipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($) ship berth	Dec. 31, 2017	Jul. 31, 2016 ft²
Commitments and Contingencies
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 \| $	$ 11,400.0
Deposit for the purchase of ships expected to enter service \| $	$ 586.1
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate	54.30%	54.00%
Line of Credit \| Minimum
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person	50.00%
Debt Securities \| Minimum
Commitments and Contingencies
Debt instrument covenant, minimum percentage of ownership by a person	50.00%
Port of Miami Terminal
Commitments and Contingencies
Area of real estate property \| ft²			170,000
Operating lease term			5 years
Royal Caribbean International Cruise Ships \| Quantum Class Ship \| Cruise ships on order
Commitments and Contingencies
Number of ships under construction	2
Royal Caribbean International Cruise Ships \| Oasis Class Ship \| Cruise ships on order
Commitments and Contingencies
Number of ships under construction	1
Royal Caribbean International Cruise Ships \| Project Icon ships \| Cruise ships on order
Commitments and Contingencies
Number of ships under construction	2
Ship passenger capacity berths \| berth	25,300
Celebrity Cruise Ships \| Project Edge Class Ships \| Cruise ships on order
Commitments and Contingencies
Number of ships under construction	4
Ship passenger capacity berths \| berth	12,300