Fair Value Measurements, Derivative Instruments and Hedging Activities - Fuel Derivatives Outstanding (Detail)
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1 Months Ended | |||||
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Nov. 30, 2012
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Nov. 30, 2013
bbl
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Fuel Derivatives 2014 Maturity November 2011 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2011-11 | [1] | ||||
Barrels | 2,112,000 | [1] | ||||
Weighted-Average Floor Price | 85 | [1] | ||||
Weighted-Average Ceiling Price | 114 | [1] | ||||
Fuel Derivatives 2014 Maturity February 2012 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2012-02 | [1] | ||||
Barrels | 2,112,000 | [1] | ||||
Weighted-Average Floor Price | 88 | [1] | ||||
Weighted-Average Ceiling Price | 125 | [1] | ||||
Fuel Derivatives 2014 Maturity June 2012 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2012-06 | [1] | ||||
Barrels | 2,376,000 | [1] | ||||
Weighted-Average Floor Price | 71 | [1] | ||||
Weighted-Average Ceiling Price | 116 | [1] | ||||
Fuel Derivatives 2014 Maturity May 2013 Transaction
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Derivative [Line Items] | ||||||
Transaction Dates | 2013-05 | [1] | ||||
Barrels | 1,728,000 | [1] | ||||
Weighted-Average Floor Price | 85 | [1] | ||||
Weighted-Average Ceiling Price | 108 | [1] | ||||
Fuel Derivatives 2014 Maturity
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Derivative [Line Items] | ||||||
Barrels | 8,328,000 | [1] | ||||
Percent of Estimated Fuel Consumption | 43.00% | [1] | ||||
Fuel Derivatives 2015 Maturity November 2011 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2011-11 | [1] | ||||
Barrels | 2,160,000 | [1] | ||||
Weighted-Average Floor Price | 80 | [1] | ||||
Weighted-Average Ceiling Price | 114 | [1] | ||||
Fuel Derivatives 2015 Maturity February 2012 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2012-02 | [1] | ||||
Barrels | 2,160,000 | [1] | ||||
Weighted-Average Floor Price | 80 | [1] | ||||
Weighted-Average Ceiling Price | 125 | [1] | ||||
Fuel Derivatives 2015 Maturity June 2012 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2012-06 | [1] | ||||
Barrels | 1,236,000 | [1] | ||||
Weighted-Average Floor Price | 74 | [1] | ||||
Weighted-Average Ceiling Price | 110 | [1] | ||||
Fuel Derivatives 2015 Maturity April 2013 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2013-04 | [1] | ||||
Barrels | 1,044,000 | [1] | ||||
Weighted-Average Floor Price | 80 | [1] | ||||
Weighted-Average Ceiling Price | 111 | [1] | ||||
Fuel Derivatives 2015 Maturity May 2013 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2013-05 | [1] | ||||
Barrels | 1,884,000 | [1] | ||||
Weighted-Average Floor Price | 80 | [1] | ||||
Weighted-Average Ceiling Price | 110 | [1] | ||||
Fuel Derivatives 2015 Maturity
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Derivative [Line Items] | ||||||
Barrels | 8,484,000 | [1] | ||||
Percent of Estimated Fuel Consumption | 43.00% | [1] | ||||
Fuel Derivatives 2016 Maturity June 2012 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2012-06 | [1] | ||||
Barrels | 3,564,000 | [1] | ||||
Weighted-Average Floor Price | 75 | [1] | ||||
Weighted-Average Ceiling Price | 108 | [1] | ||||
Fuel Derivatives 2016 Maturity February 2013 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2013-02 | [1] | ||||
Barrels | 2,160,000 | [1] | ||||
Weighted-Average Floor Price | 80 | [1] | ||||
Weighted-Average Ceiling Price | 120 | [1] | ||||
Fuel Derivatives 2016 Maturity April 2013 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2013-04 | [1] | ||||
Barrels | 3,000,000 | [1] | ||||
Weighted-Average Floor Price | 75 | [1] | ||||
Weighted-Average Ceiling Price | 115 | [1] | ||||
Fuel Derivatives 2016 Maturity
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Derivative [Line Items] | ||||||
Barrels | 8,724,000 | [1] | ||||
Percent of Estimated Fuel Consumption | 44.00% | [1] | ||||
Fuel Derivatives 2017 Maturity February 2013 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2013-02 | [1] | ||||
Barrels | 3,276,000 | [1] | ||||
Weighted-Average Floor Price | 80 | [1] | ||||
Weighted-Average Ceiling Price | 115 | [1] | ||||
Fuel Derivatives 2017 Maturity April 2013 Transaction Date
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Derivative [Line Items] | ||||||
Transaction Dates | 2013-04 | [1] | ||||
Barrels | 2,028,000 | [1] | ||||
Weighted-Average Floor Price | 75 | [1] | ||||
Weighted-Average Ceiling Price | 110 | [1] | ||||
Fuel Derivatives 2017 Maturity
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Derivative [Line Items] | ||||||
Barrels | 5,304,000 | [1] | ||||
Percent of Estimated Fuel Consumption | 27.00% | [1] | ||||
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