v3.20.2
Statement of Combined Comprehensive Income - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Net income (loss) $ 5 $ (24) $ (45) $ 9
Other comprehensive income, net of tax (J):        
Change in unrecognized net actuarial loss and prior service benefit related to pension and other postretirement benefits 31 1 92 1
Foreign currency translation adjustments 37 45 42 59
Net change in unrecognized losses on cash flow hedges 12 0 5 0
Total Other comprehensive income, net of tax 80 46 139 60
Comprehensive income 85 22 94 69
Arconic Corporation        
Net income (loss) 5 (24) (45) 9
Other comprehensive income, net of tax (J):        
Change in unrecognized net actuarial loss and prior service benefit related to pension and other postretirement benefits 31 1 92 1
Foreign currency translation adjustments 37 45 42 59
Net change in unrecognized losses on cash flow hedges 12 0 5 0
Total Other comprehensive income, net of tax 80 46 139 60
Comprehensive income 85 22 94 69
Noncontrolling interest        
Net income (loss) 0 0 0 0
Other comprehensive income, net of tax (J):        
Change in unrecognized net actuarial loss and prior service 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 income, net of tax 0 0 0 0
Comprehensive income $ 0 $ 0 $ 0 $ 0