v3.20.4

Related-party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2020
Related Party Transactions [Abstract] |
Schedule of Related Party Transactions | The following table presents the amounts related to revenue and other income and purchase of goods and services incurred in transactions with these related parties:
| 2020 |  | 2019 |  | 2018
Revenue and other income | 54 |  |  | 82 |  |  | 133 |
Purchase of goods and services | 36 |  |  | 64 |  |  | 106 |
Schedule Of Amounts Receivable From And Payable To Related Parties | The following table presents the amounts related to receivable and payable balances with these related parties:
| 2020 |  | 2019
Receivables | 3 |  |  | 21 |
Payables | 7 |  |  | 9 |

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- Definition Schedule Of Amounts Receivable From And Payable To Related Parties [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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