| Supplemental Financial Information |
Supplemental Financial Information Interest Expense, Net | | | | | | | | | | | | | | | | | | | years ended December 31 (in millions) | 2022 | | 2021 | | 2020 | | Interest expense | $ | 2,230 | | | $ | 2,423 | | | $ | 2,454 | | | Interest income | (186) | | | (39) | | | (174) | | | Interest expense, net | $ | 2,044 | | | $ | 2,384 | | | $ | 2,280 | |
Accounts Payable and Accrued Liabilities | | | | | | | | | | | | | as of December 31 (in millions) | 2022 | | 2021 | | Sales rebates | $ | 10,717 | | | $ | 8,254 | | | Dividends payable | 2,680 | | | 2,543 | | | Accounts payable | 2,934 | | | 2,882 | | | Current portion of contingent consideration liabilities | 1,469 | | | 1,249 | | | Salaries, wages and commissions | 1,371 | | | 1,785 | | | Royalty and license arrangements | 412 | | | 661 | | | Other | 5,819 | | | 5,325 | | | Accounts payable and accrued liabilities | $ | 25,402 | | | $ | 22,699 | |
Other Long-Term Liabilities | | | | | | | | | | | | | as of December 31 (in millions) | 2022 | | 2021 | | Contingent consideration liabilities | $ | 14,915 | | | $ | 13,638 | | | Liabilities for unrecognized tax benefits | 6,502 | | | 5,970 | | | Income taxes payable | 2,985 | | | 3,442 | | | Pension and other post-employment benefits | 1,638 | | | 3,153 | | | Other | 4,615 | | | 2,498 | | | Other long-term liabilities | $ | 30,655 | | | $ | 28,701 | |
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