Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Information

The following table summarizes certain Tenneco Inc. segment information:

	Segments
	Clean Air		Ride Performance		Aftermarket		Total		Other			Reclass & Elims			Total
At March 31, 2018 and for the Three Months Ended March 31, 2018
Revenues from external customers	$	1,756	$	513	$	305	$	2,574	$	—		$	—		$	2,574
Intersegment revenues	15		15		10		40		—			(40		)	—
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	119		8		35		162		(45		)	—			117
Total assets	3,095		1,152		861		5,108		—			58			5,166
At March 31, 2017 and for the Three Months Ended March 31, 2017
Revenues from external customers	1,555		428		309		2,292		—			—			2,292
Intersegment revenues	25		15		11		51		—			(51		)	—
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	94		27		42		163		(42		)	—			121
Total assets	2,809		1,013		785		4,607		—			35			4,642