Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues
Net sales and operating revenues	$ 1,773	$ 1,542	$ 5,421	$ 4,360
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,492	1,280	4,523	3,575
Goodwill impairment charge	11	0	11	0
Engineering, research, and development	32	30	102	90
Selling, general, and administrative	101	109	328	307
Depreciation and amortization of other intangibles	51	55	156	163
Total costs and expenses	1,687	1,474	5,120	4,135
Other income (expense)
Loss on sale of receivables	(1)	(1)	(4)	(3)
Other income (expense)	(1)	0	(6)	(3)
Total other income (expense)	(2)	(1)	(10)	(6)
Earnings before interest expense, income taxes, and noncontrolling interests	84	67	291	219
Interest expense (net of interest capitalized of $1 million in each of the three months ended September 30, 2011 and 2010, respectively and $3 million in each of the nine months ended September 30, 2011 and 2010, respectively)	27	36	81	100
Income tax expense	21	15	65	45
Net income	36	16	145	74
Less: Net income attributable to noncontrolling interests	6	6	18	17
Net income (loss) attributable to Tenneco Inc.	$ 30	$ 10	$ 127	$ 57
Weighted average shares of common stock outstanding -
Basic	59,793,866	59,235,282	59,866,717	59,102,041
Diluted	61,541,476	61,079,919	61,738,278	60,859,093
Basic earnings per share of common stock	$ 0.51	$ 0.17	$ 2.12	$ 0.97
Diluted earnings per share of common stock	$ 0.49	$ 0.17	$ 2.06	$ 0.94