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DIRECT OPERATING COSTS | 12 Months Ended
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Dec. 31, 2021
Direct Operating Costs [Abstract] |
DIRECT OPERATING COSTS | DIRECT OPERATING COSTS Direct operating costs are costs incurred to earn revenue and include all attributable expenses. The following table lists direct operating costs for the years ended December 31, 2021, 2020 and 2019. Comparative figures have been reclassified to conform to the current period’s presentation:
US$ MILLIONS |  | 2021 |  | 2020 |  | 2019
Depreciation and amortization |  | $ | 2,036 |  |  | $ | 1,705 |  |  | $ | 1,214 |
Compensation |  | 1,517 |  |  | 1,284 |  |  | 674 |
Fuel, transportation and distribution costs |  | 1,514 |  |  | 1,291 |  |  | 929 |
Cost of inventory |  | 1,308 |  |  | 706 |  |  | 463 |
Utilities |  | 409 |  |  | 171 |  |  | 72 |
Other direct operating costs |  | 1,463 |  |  | 1,391 |  |  | 1,257 |
Total |  | $ | 8,247 |  |  | $ | 6,548 |  |  | $ | 4,609 |

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