v3.22.0.1

Accumulated Other Comprehensive (Loss) Income​ | 12 Months Ended
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Dec. 31, 2021
Equity [Abstract] |
Accumulated Other Comprehensive (Loss) Income​ | Accumulated Other Comprehensive (Loss) Income The following table details the activity of the three components that comprise Accumulated other comprehensive (loss) income for Arconic (such activity for Noncontrolling interest was immaterial for all periods presented):
|  | 2021 |  | 2020 |  | 2019
Pension and other postretirement benefits (H) |  |  |  |  |  |
Balance at beginning of period |  | $ | (1,791) |  |  | $ | (43) |  |  | $ | (32) |
Establishment of additional defined benefit plans |  | — |  |  | (1,752) |  |  | — |
Separation-related adjustments (A) |  | — |  |  | (50) |  |  | — |
Other comprehensive income (loss): |  |  |  |  |  |
Unrecognized net actuarial loss and prior service cost/benefit |  | 190 |  |  | (259) |  |  | (16) |
Tax (expense) benefit |  | (43) |  |  | 62 |  |  | 3 |
Total Other comprehensive income (loss) before reclassifications, net of tax |  | 147 |  |  | (197) |  |  | (13) |
Amortization of net actuarial loss and prior service cost/benefit(1) |  | 680 |  |  | 326 |  |  | 3 |
Tax expense(2) |  | (157) |  |  | (75) |  |  | (1) |
Total amount reclassified from Accumulated other comprehensive loss, net of tax(5) |  | 523 |  |  | 251 |  |  | 2 |
Total Other comprehensive income (loss) |  | 670 |  |  | 54 |  |  | (11) |
Balance at end of period |  | $ | (1,121) |  |  | $ | (1,791) |  |  | $ | (43) |
Foreign currency translation |  |  |  |  |  |
Balance at beginning of period |  | $ | 29 |  |  | $ | 338 |  |  | $ | 282 |
Separation-related adjustments (A) |  | — |  |  | (396) |  |  | — |
Other comprehensive (loss) income: |  |  |  |  |  |
Foreign currency translation(3) |  | (4) |  |  | 65 |  |  | 56 |
Net amount reclassified to earnings from Accumulated other comprehensive income(3),(5) |  | — |  |  | 22 |  |  | — |
Total Other comprehensive (loss) income |  | (4) |  |  | 87 |  |  | 56 |
Balance at end of period |  | $ | 25 |  |  | $ | 29 |  |  | $ | 338 |
Cash flow hedges |  |  |  |  |  |
Balance at beginning of period |  | $ | 1 |  |  | $ | — |  |  | $ | — |
Separation-related adjustments (A) |  | — |  |  | (4) |  |  | — |
Other comprehensive (loss) income: |  |  |  |  |  |
Net change from periodic revaluations |  | (161) |  |  | (2) |  |  | — |
Tax benefit |  | 37 |  |  | 1 |  |  | — |
Total Other comprehensive loss before reclassifications, net of tax |  | (124) |  |  | (1) |  |  | — |
Net amount reclassified to earnings(4) |  | 140 |  |  | 8 |  |  | — |
Tax expense(2) |  | (32) |  |  | (2) |  |  | — |
Total amount reclassified from Accumulated other comprehensive income, net of tax(5) |  | 108 |  |  | 6 |  |  | — |
Total Other comprehensive (loss) income |  | (16) |  |  | 5 |  |  | — |
Balance at end of period |  | $ | (15) |  |  | $ | 1 |  |  | $ | — |
Accumulated other comprehensive (loss) income |  | $ | (1,111) |  |  | $ | (1,761) |  |  | $ | 295 |
_____________________ (1)These amounts were included in the non-service component of net periodic benefit cost for pension and other postretirement benefits (see Note H). In 2021 and 2020, this amount includes $584 and $199 related to the settlement of certain employee retirement benefits (see Note H). (2)These amounts were reported in (Benefit) 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. In 2020, the net amount reclassified to earnings was reported in Restructuring and other charges on the accompanying Statement of Consolidated Operations related to the sale of certain foreign subsidiaries. (4)These amounts relate to aluminum contracts, a portion of which were reported in both Sales and Cost of goods sold on the accompanying Statement of Consolidated Operations. (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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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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