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SIGNIFICANT ACCOUNTING POLICIES New Accounting Standards (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Equity | $ 9,385 | $ 11,067 | $ 10,313
Increase (decrease) due to application of IFRS 15 [member] |  |  |
Equity |  | $ 64 |

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