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v3.25.3

Related party transactions - Related Party Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Related Party Transaction [Line Items] |  |  |  |
Revenues | $ 363 | $ 354 | $ 1,075 | $ 1,096
Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 77 | 74 | 235 | 246
Management fee revenues | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 61 | 59 | 181 | 176
Add-on services | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 2 | 3 | 8 | 9
Reimbursable revenues | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 5 | 3 | 21 | 10
Lease revenue | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | 9 | 9 | 25 | 46
Other | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues | $ 0 | $ 0 | $ 0 | $ 5

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