Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Commitments and Contingencies Disclosure [Abstract] | |||
| Operating lease expense inclusive of short-term and variable lease expenses | $ 1,200 | $ 1,200 | $ 1,200 |
| Weighted average remaining lease term for operating leases | 17 years | 17 years | |
| Weighted average discount rate used to calculate operating lease liabilities | 4.20% | 4.10% | |
| Cash payments for operating leases | $ 1,000 | $ 963 | $ 965 |
| Carrying value of contractual obligation | 1,100 | ||
| Contractual value of a potential obligation | $ 1,800 | ||