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Supplementary Information (Tables) | 12 Months Ended
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Dec. 31, 2021
Other Liabilities Disclosure [Abstract] |
Schedule of Allowance for Credit Losses | Current receivables are comprised of the following at December 31:
| 2021 | 2020
Customer receivables | $ | 4,724 |  | $ | 4,676 |
Related parties | 481 |  | 429 |
Other | 846 |  | 890 |
Total current receivables | 6,051 |  | 5,995 |
Less: Allowance for credit losses | (400) |  | (373) |
Total current receivables, net | $ | 5,651 |  | $ | 5,622 |
The change in allowance for credit losses is as follows:
| 2021 | 2020
Balance at beginning of year | $ | 373 |  | $ | 323 |
Provision | 72 |  | 66 |
Write-offs & other | (45) |  | (16) |
Balance at end of year | $ | 400 |  | $ | 373 |
Schedule of Cash Flow Supplemental Disclosures | Supplemental cash flow disclosures are as follows for the years ended December 31:
| 2021 | 2020 | 2019
Income taxes paid, net of refunds | $ | 314 |  | $ | 441 |  | $ | 438 |
Interest paid | $ | 305 |  | $ | 289 |  | $ | 285 |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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