CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Premium on Common Stock and Other Capital Surplus	Accumulated Other Comprehensive Loss	Retained Earnings (Accumulated Deficit)	Less — Common Stock Held as Treasury Stock, at Cost	Tenneco Inc.	Noncontrolling Interests
Treasury Stock, Shares, Acquired						748,000
Treasury Stock, Value, Acquired, Cost Method	$ 44
Beginning balance at Dec. 31, 2014		$ 1	$ 3,059	$ (545)	$ (1,695)	$ 323		$ 41
Beginning balance (in shares) at Dec. 31, 2014		64,454,248				3,244,692
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued pursuant to benefit plans		301,787
Stock options exercised		238,741
Premium on common stock issued pursuant to benefit plans			15
Other comprehensive income (loss)	(45)			(45)			$ (45)	0
Net income attributable to Tenneco Inc.	127				127
Net income								12
Other comprehensive income (loss), noncontrolling interest								0
Ending balance (in shares) at Jun. 30, 2015		64,994,776				3,992,692
Ending balance at Jun. 30, 2015	591	$ 1	3,074	(590)	(1,568)	$ 367	550	41
Treasury Stock, Shares, Acquired						1,132,805
Treasury Stock, Value, Acquired, Cost Method	57
Beginning balance at Dec. 31, 2015	475	$ 1	3,081	(665)	(1,448)	$ 536		42
Beginning balance (in shares) at Dec. 31, 2015		65,067,132				7,473,325
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued pursuant to benefit plans		314,202
Stock options exercised		205,166
Premium on common stock issued pursuant to benefit plans			12
Other comprehensive income (loss)	9			10			10	(1)
Net income attributable to Tenneco Inc.	143				143
Net income								14
Other comprehensive income (loss), noncontrolling interest								(1)
Ending balance (in shares) at Jun. 30, 2016		65,586,500				8,606,130
Ending balance at Jun. 30, 2016	$ 596	$ 1	$ 3,093	$ (655)	$ (1,305)	$ 593	$ 541	$ 55