v3.23.1

Accumulated Other Comprehensive Income​ (Tables) | 3 Months Ended
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Mar. 31, 2023
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income | The following table presents the activity of the three components that comprise Accumulated other comprehensive loss for Arconic (such activity for Noncontrolling interest was immaterial for all periods presented):
First quarter ended March 31, |  | 2023 |  | 2022
Pension and other postretirement benefits (G) |  |  |  |
Balance at beginning of period |  | $ | (892) |  |  | $ | (1,121) |
Other comprehensive income: |  |  |  |
Unrecognized net actuarial loss and prior service cost/benefit |  | (1) |  |  | 55 |
Tax expense |  | (1) |  |  | (12) |
Total Other comprehensive (loss) income before reclassifications, net of tax |  | (2) |  |  | 43 |
Amortization of net actuarial loss and prior service cost/benefit(1) |  | 10 |  |  | 20 |
Tax expense(2) |  | (4) |  |  | (5) |
Total amount reclassified from Accumulated other comprehensive loss, net of tax(5) |  | 6 |  |  | 15 |
Total Other comprehensive income |  | 4 |  |  | 58 |
Balance at end of period |  | $ | (888) |  |  | $ | (1,063) |
Foreign currency translation |  |  |  |
Balance at beginning of period |  | $ | (51) |  |  | $ | 25 |
Other comprehensive income (loss)(3) |  | 17 |  |  | (7) |
Balance at end of period |  | $ | (34) |  |  | $ | 18 |
Cash flow hedges (Q) |  |  |  |
Balance at beginning of period |  | $ | 6 |  |  | $ | (15) |
Other comprehensive loss: |  |  |  |
Net change from periodic revaluations |  | (21) |  |  | (143) |
Tax benefit |  | 5 |  |  | 33 |
Total Other comprehensive loss before reclassifications, net of tax |  | (16) |  |  | (110) |
Net amount reclassified to earnings: |  |  |  |
Aluminum(4) |  | 1 |  |  | 53 |
Energy(4) |  | 5 |  |  | — |
Sub-total |  | 6 |  |  | 53 |
Tax expense(2) |  | (1) |  |  | (13) |
Total amount reclassified from Accumulated other comprehensive income (loss), net of tax(5) |  | 5 |  |  | 40 |
Total Other comprehensive loss |  | (11) |  |  | (70) |
Balance at end of period |  | $ | (5) |  |  | $ | (85) |
Accumulated other comprehensive loss |  | $ | (927) |  |  | $ | (1,130) |
_____________________ (1)These amounts were included in the non-service component of net periodic benefit cost for pension and other postretirement benefits (see Note G). (2)These amounts were reported in Provision for income taxes on the accompanying Statement of Consolidated Operations. (3)In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings. (4)A portion of the amounts related to aluminum were reported in each of Sales and Cost of goods sold on the accompanying Statement of Consolidated Operations (see Note Q). The amounts related to energy and alloying materials were reported in Cost of goods sold on the accompanying Statement of Consolidated Operations (see Note Q). (5)A positive amount indicates a corresponding charge to earnings and a negative amount indicates a corresponding benefit to earnings. These amounts were reflected on the accompanying Statement of Consolidated Operations in the line items indicated in footnotes 1 through 4.

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