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Balance Sheet and Cash Flow Supplemental Information | 3 Months Ended
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Mar. 31, 2021
Payables and Accruals [Abstract] |
Balance Sheet and Cash Flow Supplemental Information | Balance Sheet and Cash Flow Supplemental Information Accrued liabilities consisted of the following:
| March 31, 2021 |  | December 31, 2020
Employee-related costs and benefits | $ | 107 |  |  | $ | 133 |
Related party payables | 1 |  |  | 7 |
Interest | 31 |  |  | 21 |
Sales rebates | 39 |  |  | 43 |
Restructuring | 2 |  |  | 2 |
Taxes other than income taxes | 17 |  |  | 16 |
Asset retirement obligations | 7 |  |  | 9 |
Interest rate swaps | 43 |  |  | 57 |
Other accrued liabilities | 61 |  |  | 62 |
Accrued liabilities | $ | 308 |  |  | $ | 350 |
Additional supplemental cash flow information for the three months ended March 31, 2021 and 2020 and as of March 31, 2021 and December 31, 2020 is as follows:
| Three Months Ended March 31,
Supplemental non cash information: | 2021 |  | 2020
Financing activities - Acquisition of noncontrolling interest | $ | 125 |  |  | $ | — |
| March 31, 2021 |  | December 31, 2020
Capital expenditures acquired but not yet paid | $ | 28 |  |  | $ | 37 |

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- Definition The entire disclosures of supplemental information, including descriptions and amounts, related to the balance sheet, income statement, and/or cash flow statement. + References No definition available. + Details
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