CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income attributable to Tenneco Inc.	$ 58	$ 59
Less: Net income attributable to noncontrolling interests	14	14
Net Income	72	73
Translation of foreign currency statements attributable to Tenneco	19	21
Translation of foreign currency statements attributable to Noncontrolling Interest	8	1
Translation of foreign currency statements	27	22
Additional Liability for Pension and Postretirement Benefits, net of tax attributable to Tenneco	3	7
Additional liability for pension and postretirement benefits, net of tax	3	7
Accumulated Other Comprehensive Income (Loss)
Beginning balance	742
Ending balance	825	691
Other Comprehensive Income (Loss)	30	29
Comprehensive Income attributable to Tenneco	80	87
Comprehensive Income attributable to Noncontrolling Interest	22	15
Comprehensive Income	102	102
Tenneco Inc.
Accumulated Other Comprehensive Income (Loss)
Ending balance	765	637
Other Comprehensive Income (Loss)	22	28
AOCI Tenneco, Inc
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(541)	(665)
Ending balance	(519)	(637)
Other Comprehensive Income (Loss)	22	28
Tenneco, Inc. Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(241)	(338)
Reclassification	19	21
Ending balance	(222)	(317)
Tenneco, Inc. Additional Liability for Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(300)	(327)
Reclassification	3	7
Ending balance	(297)	(320)
Noncontrolling Interests
Accumulated Other Comprehensive Income (Loss)
Beginning balance	46	47
Ending balance	60	54
Other Comprehensive Income (Loss)	8	1
AOCI Noncontrolling Interests
Accumulated Other Comprehensive Income (Loss)
Ending balance	5	(4)
Noncontrolling Interests Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(3)	(5)
Reclassification	8	1
Ending balance	5	(4)
Total
Accumulated Other Comprehensive Income (Loss)
Ending balance	(514)	(641)
Total Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(244)	(343)
Reclassification	27	22
Ending balance	(217)	(321)
Total Additional Liability for Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(300)	(327)
Reclassification	3	7
Ending balance	$ (297)	$ (320)