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Supplemental Financial Information - Other Assets (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Derivative contracts | $ 0 | $ 90
Intangible assets, net | 295 | 300
Equity securities | 433 | 367
Prepaid maintenance | 282 | 263
Other | 63 | 61
Other assets | $ 1,073 | $ 1,081

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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A + Details
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