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Supplemental Financial Information - Other Assets (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Derivative contracts | $ 71 | $ 90
Intangible assets, net | 299 | 300
Equity securities | 352 | 367
Prepaid maintenance | 262 | 263
Other | 64 | 61
Other assets | $ 1,048 | $ 1,081

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