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Provisions | 12 Months Ended
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Dec. 31, 2020
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] |
Provisions |
| Note 25 | Provisions
FOR THE YEAR ENDED DECEMBER 31 | NOTE | AROs | Other (1) | Total
January 1, 2020 |  | 199 |  | 132 |  | 331 |
Additions |  | 21 |  | 95 |  | 116 |
Usage |  | (8) |  | (20) |  | (28) |
Reversals |  | (1) |  | (1) |  | (2) |
Discontinued operations | 3 | (9) |  | — |  | (9) |
December 31, 2020 |  | 202 |  | 206 |  | 408 |
Current | 22 | 15 |  | 38 |  | 53 |
Non-current | 27 | 187 |  | 168 |  | 355 |
December 31, 2020 |  | 202 |  | 206 |  | 408 |
(1) Other includes environmental, legal, vacant space and other provisions. AROs reflect management’s best estimates of expected future costs to restore current leased premises to their original condition prior to lease inception. Cash outflows associated with our ARO liabilities are generally expected to occur at the restoration dates of the assets to which they relate, which are long-term in nature. The timing and extent of restoration work that will be ultimately required for these sites is uncertain.

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