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Income Taxes - Summary of Tax Loss and Tax Credits (Detail)
$ in Millions
Dec. 31, 2024
USD ($)
Tax Loss Carry Forwards [Member]  
Disclosure of Income Taxes [Line Items]  
2025 $ 26
2026 44
2027 50
2028 45
2029 and thereafter 6,348
Tax Loss And Tax Credits, Total 6,513
Amount of unrecognized carryforwards [Member]  
Disclosure of Income Taxes [Line Items]  
2025 18
2026 24
2027 18
2028 20
2029 and thereafter 4,668
Tax Loss And Tax Credits, Total 4,748
Amount of recognized carryforwards [Member]  
Disclosure of Income Taxes [Line Items]  
2025 8
2026 20
2027 32
2028 25
2029 and thereafter 1,680
Tax Loss And Tax Credits, Total $ 1,765