Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Maximum length of time over which the entity is hedging its exposure.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Purchase Contract, Deposit.

+ References

No definition available.

+ Details

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- 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

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- Definition

Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Nominal or face amount used to calculate payments on a nonderivative instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

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Fair Value Measurements and Derivative Instruments - Derivative Instruments, Interest Rate Risk, Foreign Currency Exchange Rate Risk (Narrative) (Details) $ in Thousands, € in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Gains and losses from derivatives involved in hedging relationships
Maximum length of time hedged in derivative contract	3 years	3 years
Interest rate swaps
Gains and losses from derivatives involved in hedging relationships
Notional amount	$ 4,000,000			$ 4,000,000
Forward Contracts
Gains and losses from derivatives involved in hedging relationships
Change in fair value of foreign currency forward contracts recognized in earnings	13,800		$ 15,400
Forward Contracts \| Not Designated
Gains and losses from derivatives involved in hedging relationships
Notional amount	627,700
Foreign exchange contracts
Gains and losses from derivatives involved in hedging relationships
Notional amount	1,900,000			$ 1,300,000
Cruise ships on order
Gains and losses from derivatives involved in hedging relationships
Aggregate cost of ships on order, not including TUI cruises on order	8,500,000
Amount deposited for cost of ships on order	$ 316,300
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate	60.50%			66.70%
Foreign currency debt
Gains and losses from derivatives involved in hedging relationships
Carrying Value of Non-derivative instrument Designated as hedging instrument	$ 345,352			$ 311,225
Foreign currency debt \| TUI Cruises
Gains and losses from derivatives involved in hedging relationships
Carrying Value of Non-derivative instrument Designated as hedging instrument	$ 345,400	€ 323.0