|
Fair Value Measurements and Derivatives - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 3 Months Ended | |||||
|---|---|---|---|---|---|---|---|
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Mar. 31, 2014
Fuel Collars and Fuel Options
Mg
|
Mar. 31, 2014
Fuel Collars and Fuel Options
Maximum
|
Mar. 31, 2014
Fuel Swaps
Mg
|
Mar. 31, 2014
Fuel Swaps
Maximum
|
Mar. 31, 2014
Interest Rate Swap
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||
| Derivative maturing date | Dec. 31, 2014 | Dec. 31, 2016 | |||||
| Projected fuel purchases | 26,000 | 624,000 | |||||
| Notional amount of derivatives | $ 699.4 | ||||||
| Fair value of long-term debt | 3,776.7 | 3,146.4 | |||||
| Fair value of long-term debt in excess of carrying value | $ 122.5 | $ 18.6 |
| X | ||||||||||
|
- Definition
Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Long Term Borrowings Amount of Carrying Value Below Fair Value No definition available.
|
| X | ||||||||||
|
- Definition
Date the derivative contract matures, in CCYY-MM-DD format. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
|