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Goodwill and other intangible assets, net - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Finite-lived intangible assets, fully amortized and written off | $ 5 | $ 5 | $ 5 | $ 5
Finite-lived intangible assets, accumulated amortization, written off | $ 20 | $ 7 | $ 20 | $ 7
Customer relationships |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life |  |  | 13 years |

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