XML 20 R20.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Earnings Per Share (EPS) | 12 Months Ended
--- | ---
Dec. 31, 2019
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | 12. EARNINGS (LOSS) PER SHARE (EPS) We present EPS using the two-class method. This method allocates undistributed earnings between common shares and non-vested share based payment awards that entitle the holder to nonforfeitable dividend rights. Our participating securities include non-vested restricted stock units. The following table sets forth the computation of our basic and diluted EPS available to shareholders of common stock (excluding participating securities):
| 2019 |  | 2018 |  | 2017
| (in millions, except per share data)
Numerator |  |  |  |  |
Net income (loss) attributable to AAM | $ | (484.5 | ) |  | $ | (57.5 | ) |  | $ | 337.1 |
Less: Net income allocated to participating securities | — |  |  | — |  |  | (7.5 | )
Net income (loss) attributable to common shareholders - Basic and Dilutive | $ | (484.5 | ) |  | $ | (57.5 | ) |  | $ | 329.6 |
Denominators |  |  |  |  |
Basic common shares outstanding - |  |  |  |  |
Weighted-average shares outstanding | 115.6 |  |  | 115.0 |  |  | 104.6 |
Less: Participating securities | (3.3 | ) |  | (3.4 | ) |  | (2.3 | )
Weighted-average common shares outstanding | 112.3 |  |  | 111.6 |  |  | 102.3 |
Effect of dilutive securities - |  |  |  |  |
Dilutive stock-based compensation | — |  |  | — |  |  | 0.5 |
Diluted shares outstanding - |  |  |  |  |
Adjusted weighted-average shares after assumed conversions | 112.3 |  |  | 111.6 |  |  | 102.8 |
Basic EPS | $ | (4.31 | ) |  | $ | (0.51 | ) |  | $ | 3.22 |
Diluted EPS | $ | (4.31 | ) |  | $ | (0.51 | ) |  | $ | 3.21 |
Basic and diluted loss per share are the same in 2019 and 2018 because the effect of 0.4 million dilutive performance shares in 2019, and the effect of 0.8 million dilutive stock options and performance shares in 2018, would have been antidilutive.

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration