Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Summary of Earnings per share of common stock

	Three Months		Three Months		Nine Months		Nine Months
	Ended		Ended		Ended		Ended
	September 30,		September 30,		September 30,		September 30,
	2011		2010		2011		2010
	(Millions Except Share and Per Share Amounts)
Basic earnings per share —
Net income attributable to Tenneco Inc.	$	30	$	10	$	127	$	57
Average shares of common stock outstanding		59,793,866		59,235,282		59,866,717		59,102,041
Earnings per average share of common stock	$	0.51	$	0.17	$	2.12	$	0.97
Diluted earnings per share —
Net income attributable to Tenneco Inc.	$	30	$	10	$	127	$	57
Average shares of common stock outstanding		59,793,866		59,235,282		59,866,717		59,102,041
Effect of dilutive securities:
Restricted stock		227,243		411,115		275,333		417,262
Stock options		1,520,367		1,433,522		1,596,228		1,339,790
Average shares of common stock outstanding including dilutive securities		61,541,476		61,079,919		61,738,278		60,859,093
Earnings per average share of common stock	$	0.49	$	0.17	$	2.06	$	0.94