CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 91	$ 91	$ 154	$ 145
Translation of foreign currency statements	21	7	(50)	(1)
Additional Liability for Pension and Postretirement Benefits, net of tax	2	3	5	6
Other Comprehensive Income	23	10	(45)	5
Comprehensive Income	114	101	109	150
Cumulative Translation Adjustment
Beginning balance	(234)	(64)	(163)	(56)
Translation of foreign currency statements	21	7	(50)	(1)
Ending balance	(213)	(57)	(213)	(57)
Additional Liability for Pension and Postretirement Benefits
Beginning balance	(376)	(296)	(379)	(299)
Additional Liability for Pension and Postretirement Benefits, net of tax	2	3	5	6
Ending balance	(374)	(293)	(374)	(293)
Balance, Ending	(587)	(350)	(587)	(350)
Tenneco Inc.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	78	81	127	127
Translation of foreign currency statements	22	6	(50)	0
Additional Liability for Pension and Postretirement Benefits, net of tax	2	3	5	6
Other Comprehensive Income	24	9	(45)	6
Comprehensive Income	102	90	82	133
Cumulative Translation Adjustment
Beginning balance	(238)	(67)	(166)	(61)
Translation of foreign currency statements	22	6	(50)	0
Ending balance	(216)	(61)	(216)	(61)
Additional Liability for Pension and Postretirement Benefits
Beginning balance	(376)	(296)	(379)	(299)
Additional Liability for Pension and Postretirement Benefits, net of tax	2	3	5	6
Ending balance	(374)	(293)	(374)	(293)
Balance, Ending	(590)	(354)	(590)	(354)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	13	10	27	18
Translation of foreign currency statements	(1)	1	0	(1)
Other Comprehensive Income	(1)	1	0	(1)
Comprehensive Income	12	11	27	17
Cumulative Translation Adjustment
Beginning balance	4	3	3	5
Translation of foreign currency statements	(1)	1	0	(1)
Ending balance	3	4	3	4
Additional Liability for Pension and Postretirement Benefits
Beginning balance	0	0	0	0
Ending balance	0	0	0	0
Balance, Ending	$ 3	$ 4	$ 3	$ 4