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CASH FLOW – OTHER ITEMS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flow arising from changes in: |  |
Stock-based compensation expense | $ 71 | $ 33
Income from investment in equity investees (note 16) | (165) | (46)
Increase (decrease) in estimate of rehabilitation costs at closed mines | 5 | (13)
Net inventory impairment charges (note 17) | 26 | 199
Gain on remeasurement of silver sale liability | (628) | 0
Gains (losses) on litigation settlements | (216) | 0
Change in other assets and liabilities | (113) | (169)
Settlement of rehabilitation obligations | (93) | (66)
Other operating activities | (1,113) | (62)
Cash flow arising from changes in: |  |
Accounts receivable | (118) | (9)
Inventory | 9 | (111)
Other current assets | (89) | (109)
Accounts payable | (108) | 19
Other current liabilities | (51) | 37
Change in working capital | (357) | (173)
Dividends received from investments accounted for using equity method, classified as investing activities | 125 | 0
Cash repayments of advances and loans from related parties | 92 | 0
Funding of equity method investments (note 16) | 2 | 5
Other | (2) | 0
Other investing activities | $ 213 | $ (5)

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