Hedging - Hedge Portfolio Table (Details)	Feb. 05, 2015 Mg $ / Mg $ / €
Euro put option
Derivative [Line Items]
Currency derivatives - Contract Average Rate/Price (in $ per EUR)	1.37
Bunker fuel forward contracts
Derivative [Line Items]
Fuel derivatives - Notional Amount \| Mg	17,460
Bunker fuel forward contracts, contract average rate \| $ / Mg	562.92

- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

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

+ Details

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- Definition

Average contractual rate at which a foreign currency can be purchased or sold.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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- Definition

The average forward price on the group of price risk forward or futures contracts, such as gas futures contracts.

+ 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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- Details

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- Details

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