CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net income (loss) attributable to Tenneco Inc.	$ 50	$ (3)	$ 108	$ 56
Less: Net income attributable to noncontrolling interests	16	18	30	32
Net Income	66	15	138	88
Translation of foreign currency statements attributable to Tenneco	(93)	32	(74)	53
Translation of foreign currency statements attributable to Noncontrolling Interest	(7)	2	1	3
Translation of foreign currency statements	(100)	34	(73)	56
Additional Liability for Pension and Postretirement Benefits, net of tax attributable to Tenneco	4	4	7	11
Additional liability for pension and postretirement benefits, net of tax	4	4	7	11
Accumulated Other Comprehensive Income (Loss)
Beginning balance			742
Ending balance	761	657	761	657
Other Comprehensive Income (Loss)	(96)	38	(66)	67
Comprehensive Income attributable to Tenneco	(39)	33	41	120
Comprehensive Income attributable to Noncontrolling Interest	9	20	31	35
Comprehensive (Loss) Income	(30)	53	72	155
Tenneco Inc.
Accumulated Other Comprehensive Income (Loss)
Ending balance	717	615	717	615
Other Comprehensive Income (Loss)	(89)	36	(67)	64
AOCI Tenneco, Inc
Accumulated Other Comprehensive Income (Loss)
Beginning balance			(541)	(665)
Ending balance	(608)	(601)	(608)	(601)
Other Comprehensive Income (Loss)			(67)	64
Tenneco, Inc. Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(222)	(317)	(241)	(338)
Reclassification	(93)	32	(74)	53
Ending balance	(315)	(285)	(315)	(285)
Tenneco, Inc. Additional Liability for Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(297)	(320)	(300)	(327)
Reclassification	4	4	7	11
Ending balance	(293)	(316)	(293)	(316)
Noncontrolling Interests
Accumulated Other Comprehensive Income (Loss)
Beginning balance			46	47
Ending balance	44	42	44	42
Other Comprehensive Income (Loss)	(7)	2	1	3
AOCI Noncontrolling Interests
Accumulated Other Comprehensive Income (Loss)
Ending balance	(2)	(2)	(2)	(2)
Noncontrolling Interests Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	5	(4)	(3)	(5)
Reclassification	(7)	2	1	3
Ending balance	(2)	(2)	(2)	(2)
Total
Accumulated Other Comprehensive Income (Loss)
Ending balance	(610)	(603)	(610)	(603)
Total Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(217)	(321)	(244)	(343)
Reclassification	(100)	34	(73)	56
Ending balance	(317)	(287)	(317)	(287)
Total Additional Liability for Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(297)	(320)	(300)	(327)
Reclassification	4	4	7	11
Ending balance	$ (293)	$ (316)	$ (293)	$ (316)