v3.26.1
Other Financial Information - Schedule of Other Noncurrent Assets (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Other Financial Information [Abstract]    
Value added tax credits $ 284 $ 251
Deferred mining costs, net 271 240
Prepaid gas transmission contract 245 234
Gas supply prepayment 195 207
Prepaid pension benefit 137 131
IRA Section 45X credit 112 83
Noncurrent restricted cash 70 70
Intangibles, net 33 34
Other 133 115
Other assets, noncurrent, total $ 1,480 $ 1,365