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Note 2 - Cash, Cash Equivalents and Restricted Cash (Tables) | 9 Months Ended
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Sep. 30, 2025
Cash and Cash Equivalents [Abstract] |
Schedule of Cash and Cash Equivalents [Table Text Block] |
|  | September 30, |  |  | December 31, |
(in millions) |  | 2025 |  |  | 2024 |
Cash and cash equivalents |  | $ | 168 |  |  | $ | 201 |
Restricted cash reported in Other current assets |  |  | 8 |  |  |  | 8 |
Restricted cash |  |  | 95 |  |  |  | 92 |
Total cash, cash equivalents and restricted cash shown in the Consolidated Statement of Cash Flows |  | $ | 271 |  |  | $ | 301 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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