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STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) (UAH) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Comprehensive Income [Abstract]      
Net income $ 3,149 $ 2,618 $ 737
Other comprehensive income (loss), net of tax:      
Employee benefit plans 247 (261) 1,145
Investments and other 3 24 (28)
Total other comprehensive income (loss), net of tax 250 (237) 1,117
Total comprehensive income, net $ 3,399 $ 2,381 $ 1,854