Goodwill and other intangible assets, net - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Intangible Asset, Goodwill and Other [Abstract] | ||||
| Finite-lived intangible assets, accumulated amortization, written off | $ 3 | $ 9 | $ 17 | $ 21 |