Revenue (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Revenue from Contract with Customer [Abstract] | ||
| 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 | $ 380 | $ 340 |
| Performance obligation satisfied in previous period | $ 25 | $ 27 |