v3.22.2.2
Statement of Combined Comprehensive Income - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Net (loss) income $ (65) $ 16 $ 92 $ (359)
Other comprehensive (loss) income, net of tax        
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits 55 45 139 637
Foreign currency translation adjustments (72) (11) (134) (5)
Net change in unrecognized losses on cash flow hedges (17) (13) 103 (49)
Total Other comprehensive (loss) income, net of tax (34) 21 108 583
Comprehensive (loss) income (99) 37 200 224
Arconic Corporation        
Net (loss) income (65) 16 91 (359)
Other comprehensive (loss) income, net of tax        
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits 55 45 139 637
Foreign currency translation adjustments (72) (11) (134) (5)
Net change in unrecognized losses on cash flow hedges (17) (13) 103 (49)
Total Other comprehensive (loss) income, net of tax (34) 21 108 583
Comprehensive (loss) income (99) 37 199 224
Noncontrolling interest        
Net (loss) income 0 0 1 0
Other comprehensive (loss) income, net of tax        
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits 0 0 0 0
Foreign currency translation adjustments 0 0 0 0
Net change in unrecognized losses on cash flow hedges 0 0 0 0
Total Other comprehensive (loss) income, net of tax 0 0 0 0
Comprehensive (loss) income $ 0 $ 0 $ 1 $ 0