Contingencies and Commitments (Tables)

12 Months Ended

Dec. 31, 2023

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, 2020	$	322
Liabilities incurred		21
Cash payments		(23	)
Reversals of previously recorded liabilities		(17	)
Foreign currency translation and other		6
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

Schedule of Estimate Timing of Cash Outflows from Environmental Reserves

The estimated timing of cash outflows from the environmental remediation reserve at December 31, 2023 was as follows:

2024	$	66
2025 – 2028		112
Thereafter		90
Total	$	268