Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 375.1	$ 476.4
Accounts receivable, net	976.9	966.5
Inventories, net	403.1	459.7
Prepaid expenses and other	130.9	127.2
Current assets held-for-sale	312.2	0.0
Total current assets	2,198.2	2,029.8
Property, plant and equipment, net	2,326.4	2,514.4
Deferred income taxes	61.9	45.5
Goodwill	1,127.5	1,141.8
Other intangible assets, net	881.5	1,111.1
GM postretirement cost sharing asset	223.1	219.4
Other assets and deferred charges	497.7	448.7
Total assets	7,316.3	7,510.7
Current liabilities
Current portion of long-term debt	23.8	121.6
Accounts payable	703.7	840.2
Accrued compensation and benefits	165.1	179.0
Deferred revenue	22.6	44.3
Accrued expenses and other	220.2	171.7
Current liabilities held-for sale	101.7	0.0
Total current liabilities	1,237.1	1,356.8
Long-term debt, net	3,673.3	3,686.8
Deferred revenue	83.1	77.6
Deferred income taxes	21.6	92.6
Postretirement benefits and other long-term liabilities	891.6	810.6
Total liabilities	5,906.7	6,024.4
Stockholders' equity
Common stock, par value $0.01 per share; 150.0 million shares authorized; 120.1 million shares issued as of September 30, 2019 and 118.9 million shares issued as of December 31, 2018	1.2	1.2
Paid-in capital	1,310.1	1,292.6
Retained earnings	703.0	703.5
Treasury stock at cost, 7.6 million shares as of September 30, 2019 and 7.2 million shares as of December 31, 2018	(209.3)	(201.8)
Accumulated other comprehensive loss
Defined benefit plans, net of tax	(241.1)	(213.9)
Foreign currency translation adjustments	(131.3)	(96.6)
Unrecognized loss on cash flow hedges, net of tax	(25.8)	(1.1)
Total AAM stockholders' equity	1,406.8	1,483.9
Noncontrolling interests in subsidiaries	2.8	2.4
Total stockholders' equity	1,409.6	1,486.3
Total liabilities and stockholders' equity	$ 7,316.3	$ 7,510.7