Segment Disclosures and Related Information - Schedule of Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Worldwide consolidated | $ 51,002 | $ 49,642 | $ 51,014 |
| United States | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Worldwide consolidated | 48,872 | 47,889 | 49,124 |
| United Kingdom | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Worldwide consolidated | 1,333 | 1,341 | 1,406 |
| Germany | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Worldwide consolidated | 794 | 325 | 394 |
| Other countries | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Worldwide consolidated | $ 3 | $ 87 | $ 90 |