Segment and Geographic Area Information

In connection with the reportable segment changes announced on February 7, 2017, our Clean Air and Ride Performance product lines in India, which have been reported as part of Europe, South America and India segments, will now be reported with their respective product lines in the Asia Pacific segments. Beginning with the first quarter of 2017, we are organized and manage our business along our two major product lines (clean air and ride performance) and three geographic areas (North America; Europe and South America; Asia Pacific), resulting in six operating segments (North America Clean Air, North America Ride Performance, Europe and South America Clean Air, Europe and South America Ride Performance, Asia Pacific Clean Air and Asia Pacific Ride Performance). Within each geographical area, each operating segment manufactures and distributes either clean air or ride performance products primarily for the original equipment and aftermarket industries. Each of the six operating segments constitutes a reportable segment. Costs related to other business activities, primarily corporate headquarter functions, are disclosed separately from the six operating segments as "Other." We evaluate segment performance based primarily on earnings before interest expense, income taxes, and noncontrolling interests. Products are transferred between segments and geographic areas on a basis intended to reflect as nearly as possible the "market value" of the products.

Segment results for 2017, 2016 and 2015 are as follows:




	Clean Air Division						Ride Performance Division
	North America		Europe and South America		Asia Pacific		North America		Europe and South America			Asia Pacific		Other			Reclass & Elims			Total
	(Millions)
At December 31, 2017, and for the Year Ended
Revenues from external customers	$	3,101	$	2,207	$	1,209	$	1,224	$	1,076		$	457	$	—		$	—		$	9,274
Intersegment revenues	17		46		2		11		32			57		—			(165		)	—
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	203		112		133		120		21			58		(230		)	—			417
Total assets	1,344		834		843		753		606			399		—			63			4,842
At December 31, 2016, and for the Year Ended
Revenues from external customers	$	3,003	$	1,939	$	1,127	$	1,234	$	909		$	387	$	—		$	—		$	8,599
Intersegment revenues	13		92		3		9		27			48		—			(192		)	—
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	220		98		150		157		16			63		(188		)	—			516
Total assets	1,356		697		683		723		488			352		—			47			4,346
At December 31, 2015, and for the Year Ended
Revenues from external customers	$	2,823	$	1,792	$	1,080	$	1,313	$	846		$	327	$	—		$	—		$	8,181
Intersegment revenues	16		100		—		10		30			46		—			(202		)	—
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	244		49		114		155		(11		)	44		(87		)	—			508
Total assets	1,210		680		628		692		424			304		—			32			3,970

The following table shows information relating to our external customer revenues for each product or each group of similar products:



	Net Sales Year Ended December 31,
	2017		2016		2015
	(Millions)
Clean Air Products & Systems
Aftermarket	$	301	$	305	$	318
Original Equipment
OE Value-add	4,029		3,736		3,489
OE Substrate	2,187		2,028		1,888
	6,216		5,764		5,377
	6,517		6,069		5,695
Ride Performance Products & Systems
Aftermarket	950		937		941
Original Equipment	1,807		1,593		1,545
	2,757		2,530		2,486
Total Revenues	$	9,274	$	8,599	$	8,181

The following customers accounted for 10 percent or more of our net sales in the last three years. The net sales to both customers were across segments.



Customer	2017		2016		2015
General Motors Company	14	%	17	%	15	%
Ford Motor Company	13	%	13	%	14	%

The following table shows information relating to the geographic regions in which we operate:



	Geographic Area
	United States		China		Germany		Poland		United Kingdom		Other Foreign (a)		Reclass & Elims			Consolidated
	(Millions)
At December 31, 2017, and for the Year Then Ended
Revenues from external customers(b)	$	3,632	$	1,283	$	798	$	488	$	482	$	2,591	$	—		$	9,274
Long-lived assets(c)	620		279		136		216		46		470		—			$	1,767
Total assets	1,831		988		304		383		205		1,221		(90		)	$	4,842
At December 31, 2016, and for the Year Then Ended
Revenues from external customers(b)	$	3,512	$	1,186	$	764	$	385	$	387	$	2,365	$	—		$	8,599
Long-lived assets(c)	541		217		111		165		38		397		—			$	1,469
Total assets	1,897		795		231		322		130		1,119		(148		)	$	4,346
At December 31, 2015, and for the Year Then Ended
Revenues from external customers(b)	$	3,334	$	1,101	$	807	$	250	$	307	$	2,382	$	—		$	8,181
Long-lived assets(c)	496		203		108		144		32		373		—			1,356
Total assets	1,726		699		258		275		101		1,027		(116		)	3,970


(a)	Revenues from external customers and long-lived assets for individual foreign countries other than China, Germany, Poland, and United Kingdom are not material.


(b)	Revenues are attributed to countries based on location of the shipper.


(c)	Long-lived assets include all long-term assets except goodwill, intangibles and deferred tax assets.