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Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customers [Abstract]

Disaggregation of Revenue [Table Text Block]

Disaggregation of Net Sales

Net sales recognized from contracts with customers, disaggregated by segment and geographical location, are presented in the following table for the years ended December 31, 2018, December 31, 2017 and December 31, 2016. Net sales are attributed to regions based on the location of production. Intersegment sales have been excluded from the table.

		Twelve Months Ended December 31, 2018
		Driveline				Metal Forming				Powertrain				Casting				Total
North America		$	3,435.4			$	824.9			$	775.7			$	804.3			$	5,840.3
Asia		557.8				6.0				114.5				—				678.3
Europe		135.9				266.5				219.7				—				622.1
South America		124.9				—				4.8				—				129.7
Total		$	4,254.0			$	1,097.4			$	1,114.7			$	804.3			$	7,270.4
		Twelve Months Ended December 31, 2017
		Driveline				Metal Forming				Powertrain				Casting				Total
North America		$	3,400.2			$	644.2			$	564.7			$	589.7			$	5,198.8
Asia		409.4				3.3				99.8				—				512.5
Europe		97.4				182.5				141.6				—				421.5
South America		132.7				—				0.5				—				133.2
Total		$	4,039.7			$	830.0			$	806.6			$	589.7			$	6,266.0
		Twelve Months Ended December 31, 2016
		Driveline				Metal Forming				Powertrain				Casting				Total
North America		$	3,283.1			$	217.3			$	—			$	—			$	3,500.4
Asia		265.9				—				—				—				265.9
Europe		83.5				—				—				—				83.5
South America		98.2				—				—				—				98.2
Total		$	3,730.7			$	217.3			$	—			$	—			$	3,948.0

Contract with Customer, Asset and Liability [Table Text Block]

Contract Assets and Liabilities

The following table summarizes our beginning and ending balances for accounts receivable and contract liabilities associated with our contracts with customers:

	Accounts Receivable, Net			Contract Liabilities (Current)			Contract Liabilities (Long-term)
December 31, 2017	$	1,035.9		$	34.1		$	78.8
December 31, 2018	966.5			44.3			77.6
Increase/(decrease)	$	(69.4	)	$	10.2		$	(1.2	)

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Revenue from Contract with Customers [Abstract]

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Tabular disclosure of contract balances and changes in contract balances.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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