XML 67 R55.htm IDEA: XBRL DOCUMENT v3.20.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Numerator    
Net income (loss) attributable to AAM $ (501.3) $ 41.6
Less: Net income attributable to participating securities 0.0 (1.2)
Net income (loss) attributable to common shareholders - Basic and Dilutive $ (501.3) $ 40.4
Denominators    
Basic - Weighted-average shares outstanding 116.4 115.3
Basic - Less: Participating securities (3.7) (3.4)
Basic - Weighted-average common shares outstanding 112.7 111.9
Effect of dilutive securities - dilutive stock-based compensation 0.0 0.5
Diluted - Adjusted weighted-average shares after assumed conversions 112.7 112.4
Basic EPS $ (4.45) $ 0.36
Diluted EPS $ (4.45) $ 0.36