Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Summary of Earnings per share of common stock

	Three Months		Three Months		Six Months		Six Months
	Ended		Ended		Ended		Ended
	June 30,		June 30,		June 30,		June 30,
	2011		2010		2011		2010
	(Millions Except Share and Per Share Amounts)
Basic earnings per share —
Net income attributable to Tenneco Inc.	$	50	$	40	$	97	$	47
Average shares of common stock outstanding		59,980,866		59,142,946		59,901,929		59,033,416
Earnings per average share of common stock	$	0.84	$	0.68	$	1.62	$	0.79
Diluted earnings per share —
Net income attributable to Tenneco Inc.	$	50	$	40	$	97	$	47
Average shares of common stock outstanding		59,980,866		59,142,946		59,901,929		59,033,416
Effect of dilutive securities:
Restricted stock		211,556		354,974		294,526		414,059
Stock options		1,621,052		1,501,109		1,716,882		1,445,492
Average shares of common stock outstanding including dilutive securities		61,813,474		60,999,029		61,913,337		60,892,967
Earnings per average share of common stock	$	0.81	$	0.66	$	1.56	$	0.77