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Note 1 - Description of Business and Summary of Significant Accounting Policies - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Items included in accumulated other comprehensive loss: |  |
Adjustment to pension liability | $ (7) | $ (16)
Adjustment to fair value of interest rate caps | (23) | 0
Income tax benefit | (7) | (4)
Accumulated other comprehensive loss | $ (23) | $ (12)

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