Unaudited Quarterly Financial Data

12 Months Ended

Dec. 31, 2012

Unaudited Quarterly Financial Data [Abstract]

Quarterly Financial Information [Text Block]

14. UNAUDITED QUARTERLY FINANCIAL DATA



	Three Months Ended,
	March 31		June 30		September 30			December 31
	(in millions, except per share data)
2012
Net sales	$	751.5	$	739.8	$	702.9		$	736.7
Gross profit	139.2		85.8		90.7			84.0
Net income (loss)	50.3		4.7		(8.2		)	319.9
Net income (loss) attributable to AAM	51.2		4.7		(8.1		)	319.9
Basic EPS ⁽¹⁾	$	0.68	$	0.06	$	(0.11	)	$	4.21
Diluted EPS ⁽¹⁾	$	0.68	$	0.06	$	(0.11	)	$	4.21

2011
Net sales	$	645.6	$	686.2	$	647.6		$	605.6
Gross profit	115.4		130.5		103.5			105.7
Net income	36.6		47.9		22.6			30.0
Net income attributable to AAM	37.7		49.2		24.8			31.1
Basic EPS ⁽¹⁾	$	0.51	$	0.65	$	0.33		$	0.41
Diluted EPS ⁽¹⁾	$	0.50	$	0.65	$	0.33		$	0.41

(1) Full year basic and diluted EPS will not necessarily agree to the sum of the four quarters because each quarter is a separate calculation.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References+ Details