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Supplemental Financial Information (Tables) | 12 Months Ended
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Dec. 31, 2015
Table Text Block [Abstract] |
Other Assets |
(in millions) |  | December 31, 2015 |  | December 31, 2014
Intangible assets |  | $ | 464 |  |  | $ | 363 |
Non-current investments |  | 40 |  |  | 35 |
Other |  | 213 |  |  | 136 |
Other assets |  | $ | 717 |  |  | $ | 534 |
Accounts Payable |
(in millions) |  | December 31, 2015 |  | December 31, 2014
Accounts payable trade |  | $ | 178 |  |  | $ | 123 |
Salaries payable |  | 173 |  |  | 160 |
Taxes payable |  | 179 |  |  | 163 |
Aircraft maintenance payable |  | 168 |  |  | 314 |
Fuel payable |  | 48 |  |  | 85 |
Other payable |  | 442 |  |  | 358 |
Accounts payable |  | $ | 1,188 |  |  | $ | 1,203 |
Accrued Liabilities |
(in millions) |  | December 31, 2015 |  | December 31, 2014
Profitsharing and savings plans |  | $ | 655 |  |  | $ | 374 |
Aircraft and other lease related obligations |  | 74 |  |  | 159 |
Vacation pay |  | 309 |  |  | 292 |
Accrued union bonuses |  | 329 |  | (a) | 9 |
Health |  | 86 |  |  | 84 |
Derivative contracts |  | 643 |  |  | 174 |
Workers compensation |  | 187 |  |  | 165 |
Property and other taxes |  | 62 |  |  | 81 |
Other |  | 246 |  |  | 227 |
Accrued liabilities |  | $ | 2,591 |  |  | $ | 1,565 |
(a) As part of the ongoing negotiations with various union contract groups during 2015, the Company has recorded a liability for estimated bonuses that would be paid out to union members upon ratification of labor agreements. The liability excludes certain immaterial benefit costs that are included as a component of Accounts payable. The amount accrued is subject to change based on subsequent negotiations, and any changes would be recorded on a prospective basis.
Other Noncurrent Liabilities |
(in millions) |  | December 31, 2015 |  | December 31, 2014
Postretirement obligation |  | $ | 201 |  |  | $ | 169 |
Non-current lease-related obligations |  | 165 |  |  | 193 |
Other deferred compensation |  | 179 |  |  | 174 |
Deferred gains from sale and leaseback of aircraft |  | 43 |  |  | 53 |
Derivative contracts |  | 74 |  |  | 622 |
Other |  | 98 |  |  | 44 |
Other non-current liabilities |  | $ | 760 |  |  | $ | 1,255 |

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