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Other Financial Data - Summary of Components of Other Current Assets (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Other Financial Data [Abstract] |  |
Deferred project costs | $ 29 | $ 23
Prepaid expenses | 59 | 56
Commissions receivable | 27 | 89
Other | 60 | 46
Total | $ 175 | $ 214

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