Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net sales	$ 1,704.3	$ 1,900.9	$ 3,423.5	$ 3,759.3
Cost of goods sold	1,456.0	1,569.5	2,953.0	3,111.6
Gross profit	248.3	331.4	470.5	647.7
Selling, general and administrative expenses	91.3	95.0	182.0	192.3
Amortization of intangible assets	24.9	24.8	49.9	49.7
Restructuring and acquisition-related costs	12.2	36.8	24.3	55.1
Gain on sale of business	0.0	(15.5)	0.0	(15.5)
Operating income	119.9	190.3	214.3	366.1
Interest expense	(56.2)	(54.4)	(109.6)	(107.6)
Investment income	0.5	0.5	1.2	1.0
Debt refinancing and redemption costs	(2.4)	(4.3)	(2.4)	(14.6)
Gain on settlement of capital lease	0.0	15.6	0.0	15.6
Other income (expense), net	(3.1)	5.6	(6.1)	0.2
Income before income taxes	58.7	153.3	97.4	260.7
Income tax expense	6.0	2.0	3.0	19.9
Net income	52.7	151.3	94.4	240.8
Net income attributable to noncontrolling interests	(0.2)	(0.2)	(0.3)	(0.3)
Net income attributable to AAM	$ 52.5	$ 151.1	$ 94.1	$ 240.5
Basic earnings per share	$ 0.45	$ 1.31	$ 0.81	$ 2.09
Diluted earnings per share	$ 0.45	$ 1.30	$ 0.81	$ 2.08