XML 91 R19.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Earnings (Loss) Per Share (EPS) | 12 Months Ended
--- | ---
Dec. 31, 2012
Earnings (Loss) per Share (EPS) [Abstract] |
Earnings Per Share [Text Block] |
| EARNINGS PER SHARE (EPS)
The following table sets forth the computation of our basic and diluted EPS:
| 2012 |  | 2011 |  | 2010
| (in millions, except per share data)
Numerator |  |  |  |  |
Net income attributable to AAM | $ | 367.7 |  |  | $ | 142.8 |  |  | $ | 115.4 |
Denominators |  |  |  |  |
Basic shares outstanding - |  |  |  |  |
Weighted-average shares outstanding | 75.3 |  |  | 74.9 |  |  | 71.5 |
Effect of dilutive securities - |  |  |  |  |
Dilutive stock options | 0.1 |  |  | 0.1 |  |  | 0.1 |
Dilutive warrants | — |  |  | 0.4 |  |  | 2.9 |
Diluted shares outstanding - |  |  |  |  |
Adjusted weighted-average shares after assumed conversions | 75.4 |  |  | 75.4 |  |  | 74.5 |
Basic EPS | $ | 4.88 |  |  | $ | 1.91 |  |  | $ | 1.61 |
Diluted EPS | $ | 4.87 |  |  | $ | 1.89 |  |  | $ | 1.55 |
Certain exercisable stock options were excluded in the computations of diluted EPS because the exercise price of these options was greater than the average annual market prices of our stock. The number of stock options outstanding excluded from the calculation of diluted EPS was 3.3 million at year-end 2012, 4.0 million at year-end 2011 and 4.8 million at year-end 2010. The ranges of exercise prices related to these stock options were $15.58 - $40.83 at year-end 2012, $15.56 - $40.83 at year-end 2011 and $10.08 - $40.83 at year-end 2010. As part of the 2009 Settlement and Commercial Agreement, we issued to GM five year warrants, which entitled GM to purchase 4.1 million shares of AAM's common stock at an exercise price of $2.76 per share. In 2011, GM exercised these warrants. In accordance with the cashless exercise option available in the agreement, we issued 3.3 million net shares of common stock to GM.

X
- Details
Name: | axl_EarningsLossPerShareEpsAbstract
Namespace Prefix: | axl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration