Revenue (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Revenue from Contract with Customer [Abstract] | ||||
| Threshold percentage of total revenue (as a percent) | 1.00% | |||
| Revenue recognized that was included in the contract liability balance at the beginning of the period | $ 149 | $ 187 | $ 730 | $ 698 |
| Performance obligation satisfied in previous period | $ 18 | $ 20 | $ 61 | $ 64 |