Business Combinations (Tables)

3 Months Ended

Mar. 31, 2017

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

On March 1, 2017, AAM completed the acquisition of 100% of USM Mexico, a former subsidiary of U.S. Manufacturing Corporation (USM). The purchase price was funded entirely with available cash and the acquisition was accounted for under the acquisition method with the purchase price allocated to the identifiable assets and liabilities of the acquired company based on the respective fair values of the assets and liabilities.

USM Mexico includes USM's operations in Guanajuato, Mexico, which has historically been one of the largest suppliers to AAM's Guanajuato Manufacturing Complex. This acquisition allows AAM to vertically integrate the supply chain and helps ensure continuity of supply for certain parts to our largest manufacturing facility.

The following represents the estimated fair value of the assets acquired and liabilities assumed resulting from the acquisition, as well as the calculation of goodwill:



(in millions)
Contractual purchase price	$	162.5
Adjustments to contractual purchase price for capital equipment	4.9
Adjustment to contractual purchase price for settlement of existing accounts payable balance	(22.8		)
Cash acquired	(0.5		)
Adjusted purchase price, net of cash acquired	$	144.1
Accounts receivable	1.1
Inventories	4.8
Prepaid expenses and other	2.4
Property, plant and equipment	39.1
Intangible assets	31.7
Total assets acquired	$	79.1
Accounts payable	10.8
Accrued expenses and other	2.7
Deferred income tax liabilities	1.2
Net assets acquired	$	64.4
Goodwill	$	79.7

Schedule of Goodwill [Table Text Block]

Goodwill The following table provides a reconciliation of changes in goodwill for the three months ended March 31, 2017:



	March 31,
	2017
	(in millions)
Beginning balance	$	154.0
Acquisition of USM Mexico	79.7
Foreign currency translation	0.1
Ending balance	$	233.8

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

Intangible Assets As a result of the acquisition of USM Mexico, AAM identified and recognized certain intangible assets that are subject to amortization. The weighted-average amortization period for all intangible assets recognized as a result of the acquisition of USM Mexico is 13 years. The following table provides a breakout of the major intangible assets acquired by class:



	March 31,
	2017
	(in millions)
Technology	$	29.5
Customer platforms	2.2
Total	$	31.7

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The following table provides a reconciliation of the gross carrying amount and associated accumulated amortization for AAM's total intangible assets, which are all subject to amortization:



	March 31,							December 31,
	2017							2016
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(in millions)
Capitalized computer software	$	33.1	$	(9.9	)	$	23.2	$	31.7	$	(8.5	)	$	23.2
e-AAM in-process research & development	5.4		—			5.4		5.3		—			5.3
Technology	29.5		(0.2		)	29.3		—		—			—
Customer platforms	2.2		—			2.2		—		—			—
Total	$	70.2	$	(10.1	)	$	60.1	$	37.0	$	(8.5	)	$	28.5