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Accrued Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2015
Payables and Accruals [Abstract] |
Accrued Liabilities | Accrued liabilities consist of (in millions):
|  | June 30, 2015 |  |  | December 31, 2014 |
Accrued vendor costs |  | $ | 880 |  |  | $ | 815 |
Customer prepayments and billings |  |  | 566 |  |  |  | 703 |
Compensation |  |  | 331 |  |  |  | 662 |
Fair value of derivative financial instruments |  |  | 290 |  |  |  | 297 |
Warranty |  |  | 261 |  |  |  | 272 |
Taxes (non-income) |  |  | 158 |  |  |  | 211 |
Insurance |  |  | 115 |  |  |  | 126 |
Accrued commissions |  |  | 87 |  |  |  | 97 |
Interest |  |  | 11 |  |  |  | 11 |
Other |  |  | 329 |  |  |  | 324 |
Total |  | $ | 3,028 |  |  | $ | 3,518 |
Changes in Carrying Amount of Service and Product Warranties | The changes in the carrying amount of service and product warranties are as follows (in millions):
Balance at December 31, 2014 |  | $ | 272 |
Net provisions for warranties issued during the year |  |  | 39 |
Amounts incurred |  |  | (48 | )
Currency translation adjustments and other |  |  | (2 | )
Balance at June 30, 2015 |  | $ | 261 |

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