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Supplemental Financial Information (Tables) | 3 Months Ended
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Mar. 31, 2016
Table Text Block [Abstract] |
Other Assets |
(in millions) | March 31, 2016 |  | December 31, 2015
Intangible assets | $ | 460 |  |  | $ | 464 |
Non-current investments | 41 |  |  | 40 |
Other | 232 |  |  | 213 |
Other assets | $ | 733 |  |  | $ | 717 |
Schedule of Accounts Payable |
(in millions) | March 31, 2016 |  | December 31, 2015
Accounts payable trade | $ | 191 |  |  | $ | 178 |
Salaries payable | 171 |  |  | 173 |
Taxes payable | 246 |  |  | 179 |
Aircraft maintenance payable | 75 |  |  | 168 |
Fuel payable | 49 |  |  | 48 |
Other payables | 421 |  |  | 442 |
Accounts payable | $ | 1,153 |  |  | $ | 1,188 |
Accrued Liabilities |
(in millions) | March 31, 2016 |  | December 31, 2015
ProfitSharing and savings plans | $ | 798 |  |  | $ | 655 |
Aircraft and other lease related obligations | 50 |  |  | 74 |
Vacation pay | 314 |  |  | 309 |
Accrued union bonuses | 244 |  |  | 329 |
Health | 80 |  |  | 86 |
Derivative contracts | 358 |  |  | 643 |
Workers compensation | 191 |  |  | 187 |
Property and income taxes | 232 |  |  | 62 |
Other | 205 |  |  | 246 |
Accrued liabilities | $ | 2,472 |  |  | $ | 2,591 |
Other Noncurrent Liabilities |
(in millions) | March 31, 2016 |  | December 31, 2015
Postretirement obligation | $ | 206 |  |  | $ | 201 |
Non-current lease-related obligations | 155 |  |  | 165 |
Other deferred compensation | 168 |  |  | 179 |
Deferred gains from sale and leaseback of aircraft | 40 |  |  | 43 |
Derivative contracts | 46 |  |  | 74 |
Other | 88 |  |  | 98 |
Other noncurrent liabilities | $ | 703 |  |  | $ | 760 |

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