CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS EQUITY - 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
Beginning balance at Dec. 31, 2013		$ 1	$ 3,014	$ (360)	$ (1,921)	$ 301		$ 39
Beginning balance (in shares) at Dec. 31, 2013		63,714,728				2,844,692
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Premium on common stock issued pursuant to benefit plans			23
Other comprehensive income (loss)				6
Net income attributable to Tenneco Inc.	$ 127				127
Purchase of common stock through stock repurchase program (in shares)						0
Purchase of common stock through stock repurchase program						$ 0
Net income								9
Issued pursuant to benefit plans		77,651
Stock options exercised		57,828
Dividends declared								(12)
Ending balance (in shares) at Jun. 30, 2014		63,850,207				2,844,692
Ending balance at Jun. 30, 2014	625	$ 1	3,037	(354)	(1,794)	$ 301	$ 589	36
Beginning balance at Dec. 31, 2014	538	$ 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]
Premium on common stock issued pursuant to benefit plans			15
Other comprehensive income (loss)				(45)
Net income attributable to Tenneco Inc.	127				127
Purchase of common stock through stock repurchase program (in shares)						748,000
Purchase of common stock through stock repurchase program						$ 44
Net income								12
Issued pursuant to benefit plans		301,787
Stock options exercised		238,741
Dividends declared								(12)
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