Balance Sheet and Cash Flow Supplemental Information Accrued liabilities consisted of the following: | | | | | | | | | | | | | September 30, 2024 | | December 31, 2023 | | Employee-related costs and benefits | $ | 116 | | | $ | 111 | | | Related party payables | 7 | | | 1 | | | Interest | 3 | | | 16 | | | Sales rebates | 38 | | | 36 | | | | | | | Taxes other than income taxes | 11 | | | 6 | | | Asset retirement obligations | 11 | | | 14 | | | | | | | | | | | | | | | Other accrued liabilities | 57 | | | 46 | | | Accrued liabilities | $ | 243 | | | $ | 230 | |
Additional supplemental cash flow information for the nine months ended September 30, 2024 and 2023 and as of September 30, 2024 and December 31, 2023 is as follows: | | | | | | | | | | | | | Nine Months Ended September 30, | | Supplemental non cash information: | 2024 | | 2023 | | Operating activities - Chloride slag inventory purchases made from AMIC (including VAT) | $ | 44 | | | $ | 27 | | | Operating activities - MGT sales made to AMIC | $ | 5 | | | $ | 5 | | Operating activities - Withholding tax on sale of royalty interest1 | $ | 7 | | | $ | — | | Investing activities - Proceeds from sale of royalty interest1 | $ | 7 | | | $ | — | | | Investing activities - In-kind receipt of AMIC loan repayment | $ | 44 | | | $ | 27 | | | Financing activities - Initial commercial insurance premium financing agreement | $ | 18 | | | $ | 18 | | | Financing activities - Repayment of MGT loan | $ | 5 | | | $ | 5 | | | | | | | September 30, 2024 | | December 31, 2023 | | Capital expenditures acquired but not yet paid | $ | 76 | | | $ | 67 | |
|