Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Summary of Earnings Per Share of Common Stock

Earnings per share of common stock outstanding were computed as follows:

	Three Months Ended March 31,
	2013		2012
	(Millions Except Share and Per Share Amounts)
Basic earnings per share —
Net income attributable to Tenneco Inc.	$	54	$	30
Weighted Average shares of common stock outstanding	60,288,997		60,196,428
Earnings per average share of common stock	$	0.90	$	0.50
Diluted earnings per share —
Net income attributable to Tenneco Inc.	$	54	$	30
Weighted Average shares of common stock outstanding	60,288,997		60,196,428
Effect of dilutive securities:
Restricted stock	138,594		160,346
Stock options	1,054,244		1,379,430
Weighted Average shares of common stock outstanding including dilutive securities	61,481,835		61,736,204
Earnings per average share of common stock	$	0.88	$	0.49