Other Financial Information - Schedule of Other Noncurrent Assets (Detail) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Other Financial Information [Abstract]
Value added tax credits	$ 324	$ 336
Prepaid gas transmission contract	285	297
Gas Supply Prepayment	262	283
Deferred mining costs, net	179	187
Prepaid pension benefit	127	125
Goodwill	146	146
Noncurrent prepaid tax asset	69	73
Noncurrent restricted cash	66	71
Intangibles, net	36	37
Other	111	95
Other assets, noncurrent, total	$ 1,605	$ 1,650