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v3.25.2

Additional financial information - Other Noncurrent Liabilities (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Liabilities for unrecognized tax benefits | $ 166 | $ 167
Finance lease liabilities | 289 | 312
Asset retirement obligations | 239 | 242
Pension liabilities | 236 | 235
Contract liabilities | 349 | 341
Environmental remediation liabilities | 57 | 54
Self-insurance reserves | 93 | 62
Other | 134 | 108
Total Other noncurrent liabilities | $ 1,563 | $ 1,521

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