Contingencies and Commitments (Tables)

12 Months Ended

Dec. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Schedule of Changes in Carrying Value of Recorded Environmental Remediation Reserves

Alcoa Corporation’s environmental remediation reserve balance reflects the most probable costs to remediate identified environmental conditions for which costs can be reasonably estimated. The following table details the changes in the carrying value of recorded environmental remediation reserves:

Balance at December 31, 2021	$	309
Liabilities incurred		32
Cash payments		(26	)
Reversals of previously recorded liabilities		(30	)
Foreign currency translation and other		(1	)
Balance at December 31, 2022		284
Liabilities incurred		39
Cash payments		(55	)
Reversals of previously recorded liabilities		(1	)
Foreign currency translation and other		1
Balance at December 31, 2023		268
Liabilities incurred		25
Cash payments		(49	)
Reversals of previously recorded liabilities		(12	)
Foreign currency translation and other		(12	)
Balance at December 31, 2024	$	220

Schedule of Estimate Timing of Cash Outflows from Environmental Reserves

The estimated timing of cash outflows from the environmental remediation reserve at December 31, 2024 was as follows:

2025	$	38
2026 – 2029		77
Thereafter		105
Total	$	220