Summary of Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Redeemable Noncontrolling Interests

The following is a rollforward of activity in our redeemable noncontrolling interests for the years ending December 31, 2014, 2013 and 2012, respectively:

	2014			2013			2012
	(Millions)
Balance January 1	$	20		$	15		$	12
Net income attributable to redeemable noncontrolling interests	23			14			9
Sale of 45 percent equity interest from Tenneco Inc	4			—			—
Capital Contributions	1			—			2
Dividends declared	(13		)	(9		)	(8		)
Balance December 31	$	35		$	20		$	15

Inventories by Major Classification

Inventories

At December 31, 2014 and 2013, inventory by major classification was as follows:

	2014		2013
	(Millions)
Finished goods	$	272	$	267
Work in process	221		202
Raw materials	137		130
Materials and supplies	58		57
	$	688	$	656

Changes in Net Carrying Amount of Goodwill

The changes in the net carrying amount of goodwill for the years ended December 31, 2014, 2013 and 2012 were as follows:

	Clean Air Division							Ride Performance Division
	North America		Europe, South America & India			Asia Pacific		North America		Europe, South America & India			Asia Pacific		Total
(Millions)
Balance at December 31, 2012	$	14	$	14		$	—	$	10	$	34		$	—	$	72
Translation Adjustment	—		—			—		—		(3		)	—		(3		)
Balance at December 31, 2013	14		14			—		10		31			—		69
Translation Adjustment	—		(2		)	—		—		(2		)	—		(4		)
Balance at December 31, 2014	14		12			—		10		29			—		65

Carrying Amount and Accumulated Amortization of Finite Useful Life Intangible Assets

The carrying amount and accumulated amortization of our finite useful life intangible assets were as follows:

	December 31, 2014					December 31, 2013
	Gross Carrying Value		Accumulated Amortization			Gross Carrying Value		Accumulated Amortization
	(Millions)					(Millions)
Customer contract	$	8	$	(4	)	$	8	$	(4	)
Patents	3		(2		)	3		(2		)
Technology rights	26		(15		)	26		(12		)
Other	11		(2		)	11		(1		)
Total	$	48	$	(23	)	$	48	$	(19	)

Property, Plant and Equipment

At December 31, 2014 and 2013, plant, property, and equipment, at cost, by major category were as follows:

	2014		2013
	(Millions)
Land, buildings, and improvements	$	569	$	579
Machinery and equipment	2,655		2,673
Other, including construction in progress	266		246
	$	3,490	$	3,498