CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Net sales	$ 751.5	$ 645.6
Cost of goods sold	612.3	530.2
Gross profit	139.2	115.4
Selling, general and administrative expenses	61.8	56.7
Operating income	77.4	58.7
Interest expense	(24.0)	(21.3)
Investment income	0.3	0.3
Other income (expense), net	(1.2)	1.0
Income before income taxes	52.5	38.7
Income tax expense	2.2	2.1
Net income	50.3	36.6
Net loss attributable to the noncontrolling interests	0.9	1.1
Net income attributable to AAM	$ 51.2	$ 37.7
Basic earnings per share	$ 0.68	$ 0.51
Diluted earnings per share	$ 0.68	$ 0.50

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

No definition available.