Maximum Length of Time Hedged in Derivative Contract

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- Definition

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

+ References

No definition available.

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- Definition

Purchase Contract, Deposit.

+ References

No definition available.

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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.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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- References

No definition available.

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- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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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

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- Definition

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

+ References

No definition available.

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Fair Value Measurements and Derivative Instruments (Derivative Instruments) (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 EUR (€)
Fair Value Disclosures [Abstract]
Maximum length of time hedged in derivative contract	3 years
Derivative instruments disclosure
Aggregate cost of ships expected to enter service	$ 14,200.0
Deposit for the purchase of ships expected to enter service	$ 684.8
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate	66.30%	65.90%		66.30%
Exchange gains (losses) recorded in other income (expense)	$ (1.5)	$ 0.4	$ 57.6
Foreign currency forward \| Not Designated as Hedging Instrument
Derivative instruments disclosure
Notional amount	364.0
Change in fair value of foreign currency forward contracts recognized in earnings	(19.0)	1.4	(62.4)
Exchange gains (losses) recorded in other income (expense)		0.4	$ 57.6
Foreign currency forward \| Designated as Hedging Instrument
Derivative instruments disclosure
Notional amount	299.7			€ 245.0
Foreign exchange contracts
Derivative instruments disclosure
Notional amount	$ 3,100.0	$ 2,900.0