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Investments - Detail of equity method investments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Schedule of Investments [Line Items] |  |  |
Investments accounted for using the equity method | $ 2,277 | $ 1,814 |
Equity in earnings of partnerships and similar investments | 46 | 99 | $ 267
Real estate-related investments |  |  |
Schedule of Investments [Line Items] |  |  |
Investments accounted for using the equity method | 1,392 | 1,320 |
Equity in earnings of partnerships and similar investments | 8 | 85 | 233
Private equity funds |  |  |
Schedule of Investments [Line Items] |  |  |
Investments accounted for using the equity method | 804 | 457 |
Equity in earnings of partnerships and similar investments | 32 | 9 | 32
Private debt funds |  |  |
Schedule of Investments [Line Items] |  |  |
Investments accounted for using the equity method | 81 | 37 |
Equity in earnings of partnerships and similar investments | $ 6 | $ 5 | $ 2

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