Statements of Consolidated Comprehensive Income (Loss) (UAH) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,618	$ 737	$ (1,964)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(261)	1,145	199
Investments and other	24	(28)	(2)
Total other comprehensive income (loss), net of tax	(237)	1,117	197
Total comprehensive income (loss), net	$ 2,381	$ 1,854	$ (1,767)