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Other current assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Subclassifications of assets, liabilities and equities [abstract] |
Schedule of other current assets | The following table provides details related to Other current assets as of December 31, 2019 and 2018:
($ millions) | 2019 |  |  | 2018 |
Current portion of long-term financial investments measured at FVPL | 33 |  |  | 31 |
Current portion of long-term receivables from customers | 122 |  |  | 133 |
Current portion of minimum lease payments from finance lease agreements | 46 |  |  | 57 |
Prepaid expenses | 89 |  |  | 46 |
Other receivables, security deposits and current assets | 147 |  |  | 52 |
Derivative financial instruments | 1 |  |  | — |
VAT receivable | 64 |  |  | 68 |
Total other current assets | 502 |  |  | 387 |

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