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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Net income (loss) $ 64.3 $ 5.9 $ (561.1)
Other comprehensive income (loss)      
Defined benefit plans, net of tax of $(31.8) million, $(18.2) million and $12.7 million in 2022, 2021 and 2020, respectively 95.0 69.1 (51.1)
Foreign currency translation adjustments (38.4) (10.2) (0.2)
Changes in cash flow hedges, net of tax of $(6.5) million, $(3.9) million and $1.3 million in 2022, 2021 and 2020, respectively 32.8 8.5 (4.4)
Other comprehensive income (loss) 89.4 67.4 (55.7)
Comprehensive income (loss) 153.7 73.3 (616.8)
Net income attributable to noncontrolling interests 0.0 0.0 (0.2)
Foreign currency translation adjustments attributable to noncontrolling interests 0.0 0.0 0.3
Comprehensive income (loss) attributable to AAM $ 153.7 $ 73.3 $ (616.7)