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Investments - Schedule of Investments (Detail) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Long-Term Investments [Abstract]    
Equity method investments [1] $ 794 $ 987
Public and Private equity investments [2] 206 230
Warrants 14 34
Debt investments 31 22
Investments $ 1,045 $ 1,273
[1] The ownership percentages and carrying values of the Company’s principal equity method investments at December 31 were as follows [in millions, except percentages]
[2] Cumulative unrealized gains and losses on equity securities held as at December 31, 2024 were $29 million and $18 million [$28 million and $323 million as at December 31, 2023], respectively.