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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Operating Loss Carryforwards [Line Items] |  |  |  |
Effective income tax rate reconciliation, percent | (2.00%) | 1.30% | (19.60%) |
Increases to valuation allowance | $ 654 | $ 860 | $ 2,069 |
Unrecognized tax benefits | 241 | $ 240 | 231 | $ 128
More Likely That Not To Realize All Deferred Tax Assets |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Increases to valuation allowance |  |  | $ 2,100 |
Federal |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating losses | 4,100 |  |  |
Net operating losses that will carry-forward indefinitely | 4,100 |  |  |
Federal | Research and Development |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax credit carry-forwards | 111 |  |  |
State |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating losses | 3,300 |  |  |
Net operating losses that will carry-forward indefinitely | 1,600 |  |  |
Net operating losses that begin to expire in 2030 | 1,700 |  |  |
State | Research and Development |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax credit carry-forwards | 208 |  |  |
Foreign |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating losses | 89 |  |  |
Net operating losses that will carry-forward indefinitely | $ 89 |  |  |

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