Investments - Narrative (Details) $ in Millions |
6 Months Ended | |||
|---|---|---|---|---|
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
May 31, 2026
USD ($)
|
Dec. 31, 2025
USD ($)
|
|
| Net Investment Income [Line Items] | ||||
| Payments to acquire investments | $ 19,444 | $ 21,581 | ||
| Proceeds from investments | 25,090 | 18,847 | ||
| Credit guarantees | ||||
| Net Investment Income [Line Items] | ||||
| Guarantor obligations, current carrying value | 34 | $ 500 | $ 14 | |
| Time Deposits | ||||
| Net Investment Income [Line Items] | ||||
| Payments to acquire investments | 19,090 | 21,245 | ||
| Proceeds from investments | $ 24,790 | $ 18,540 | ||
| United Launch Alliance (ULA) | Boeing Company | ||||
| Net Investment Income [Line Items] | ||||
| Investment, membership interest ownership percentage | 0.50 | |||
| United Launch Alliance (ULA) | Lockheed Martin Corporation (Lockheed) | ||||
| Net Investment Income [Line Items] | ||||
| Investment, membership interest ownership percentage | 0.50 | |||