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Acquisitions and Divestitures - Divestiture (Details) - Magellan Acquisition - Disposal Group, Held-for-sale, Not Discontinued Operations - USD ($) $ in Millions | 12 Months Ended |
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Dec. 31, 2025 | Mar. 31, 2026
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Assets held for sale included in other current assets |  | $ 299
Liabilities held for sale |  | $ 299
Goodwill impairment | $ 513 |
Goodwill, impairment, net of tax | $ 389 |

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