Revenue Recognition - Government Assistance (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| Revenue Recognition | |||||
| Grant proceeds received for capital expenditures | $ 0 | $ 3 | $ 5 | $ 22 | |
| Short-term deferred revenue | 6 | 6 | $ 6 | ||
| Long-term deferred revenue | $ 109 | $ 109 | $ 108 | ||
| Minimum | |||||
| Revenue Recognition | |||||
| Government assistance transaction duration | 9 years | ||||
| Maximum | |||||
| Revenue Recognition | |||||
| Government assistance transaction duration | 21 years | ||||