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Other current assets (Tables) | 12 Months Ended
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Dec. 31, 2020
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, 2020 and 2019:
($ millions) | 2020 |  | 2019 |
Current portion of long-term financial investments measured at FVPL | 12 |  |  | 33 |  |
Current portion of long-term receivables from customers | 107 |  |  | 122 |  |
Current portion of minimum lease payments from finance lease agreements | 29 |  |  | 46 |  |
Prepaid expenses | 93 |  |  | 89 |  |
Other receivables, security deposits and current assets | 88 |  |  | 147 |  |
Derivative financial instruments | 3 |  |  | 1 |  |
VAT receivable | 72 |  |  | 64 |  |
Total other current assets | 404 |  |  | 502 |  |

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