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Supplementary Information | 12 Months Ended
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Dec. 31, 2021
Other Liabilities Disclosure [Abstract] |
Supplementary Information | SUPPLEMENTARY INFORMATION ALL OTHER CURRENT LIABILITIES All other current liabilities as of December 31, 2021 and 2020 include $955 million and $910 million, respectively, of employee related liabilities. ALLOWANCE FOR CREDIT LOSSES 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 |
CASH FLOW 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 The entire disclosure for other liabilities. + 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 210.5-02.20,24) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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