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Earnings Per Share (EPS) (Tables)

12 Months Ended

Dec. 31, 2022

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation of our basic and diluted EPS available to shareholders of common stock (excluding participating securities):


	2022		2021		2020
	(in millions, except per share data)
Numerator
Net income (loss) attributable to AAM	$	64.3	$	5.9	$	(561.3)
Less: Net income allocated to participating securities	(2.7)		(0.2)		—
Net income (loss) attributable to common shareholders - Basic and Dilutive	$	61.6	$	5.7	$	(561.3)



Denominators
Basic common shares outstanding -
Weighted-average shares outstanding	119.4		118.5		117.9
Less: Weighted-average participating securities	(4.9)		(4.6)		(4.8)
Weighted-average common shares outstanding	114.5		113.9		113.1

Effect of dilutive securities -

Dilutive stock-based compensation	1.0		0.2		—


Diluted shares outstanding -
Adjusted weighted-average shares after assumed conversions	115.5		114.1		113.1

Basic EPS	$	0.54	$	0.05	$	(4.96)

Diluted EPS	$	0.53	$	0.05	$	(4.96)