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Employee Benefits - Funded Status of Pension Plans Recognized in Balance Sheets (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Funded status | $ (32) | $ (40)
Net prepaid pension cost recognized consists of: |  |
Noncurrent assets | 85 | 80
Current liabilities | (13) | (13)
Noncurrent liabilities | (104) | (107)
Net prepaid pension cost recognized | (32) | (40)
Net unrecognized losses (gains) | 329 | 415
Net unrecognized prior service credit | 0 | 0
Total unrecognized AOCI | 329 | 415
Postretirement Benefit Plan |  |
Net prepaid pension cost recognized consists of: |  |
Net unrecognized losses (gains) | (8) | (8)
Net unrecognized prior service credit | (8) | (9)
Total unrecognized AOCI | $ (16) | $ (17)

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