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Hedging Activities (Tables) | 12 Months Ended
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Dec. 31, 2016
Description of Derivative Instruments | The table below presents the fair value amounts of fuel derivative assets and liabilities and the location of amounts recognized in the Company’s financial statements. At December 31, the Company’s derivatives were reported in its consolidated balance sheets as follows (in millions):
Classification |  | Balance Sheet Location |  | 2016 |  |  | 2015 |
Derivatives designated as cash flow hedges |  |  |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |
Fuel contracts due within one year |  | Fuel derivative instruments |  | $ | — |  |  | $ | 119 |
Derivatives not designated for hedge accounting |  |  |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |
Fuel contracts due within one year |  | Fuel derivative instruments |  | $ | — |  |  | $ | 5 |
Total derivatives |  |  |  |  |  |  |  |  |  |
Total liabilities |  |  |  | $ | — |  |  | $ | 124 |
Schedule of Losses on Derivative Instruments | The following tables present the fuel hedge gains (losses) recognized during the periods presented and their classification in the financial statements (in millions): Derivatives designated as cash flow hedges
|  | Amount of Loss Recognized in AOCI on Derivatives (Effective Portion) |  |  | Loss Reclassified from AOCI into Income (Fuel Expense) (Effective Portion) |  |  | Amount of Loss Recognized in Nonoperating income (expense): Miscellaneous, net (Ineffective Portion) |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Fuel contracts |  | $ | (4) |  |  | $ | (320) |  |  | $ | (217) |  |  | $ | (604) |  |  | $ | — |  |  | $ | — |
Schedule of Derivative Instruments not Designated as Hedges Losses | Derivatives not designated for hedge accounting
|  | Amount of Loss Recognized in Nonoperating income (expense): Miscellaneous, net |  |  |
|  | 2016 |  |  | 2015 |  |  | 2014 |  |  |
Fuel contracts |  | $ | — |  |  | $ | (80 | ) |  | $ | (462) |  |  |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified 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 -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 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure for other derivative instruments not designated as hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + 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 + Details
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