CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
Net sales and operating revenues	$ 2,130	$ 2,241	$ 4,153	$ 4,335
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,764	1,851	3,450	3,605
Engineering, research, and development	38	42	79	84
Selling, general, and administrative	121	139	246	271
Depreciation and amortization of other intangibles	51	52	101	103
Costs and expenses	1,974	2,084	3,876	4,063
Other expense
Loss on sale of receivables	(1)	(1)	(2)	(2)
Other	0	0	0	(1)
Total other income (expense)	(1)	(1)	(2)	(3)
Earnings before interest expense, income taxes, and noncontrolling interests	155	156	275	269
Interest expense	17	19	33	38
Earnings before income taxes and noncontrolling interests	138	137	242	231
Income tax expense	47	46	88	86
Net income	91	91	154	145
Less: Net income attributable to noncontrolling interests	13	10	27	18
Net income attributable to Tenneco Inc.	$ 78	$ 81	$ 127	$ 127
Weighted average shares of common stock outstanding —
Basic (in shares)	60,829,125	60,736,737	60,929,839	60,631,080
Diluted (in shares)	61,363,702	61,661,896	61,488,915	61,583,725
Basic earnings per share of common stock (in dollars per share)	$ 1.27	$ 1.34	$ 2.08	$ 2.10
Diluted earnings per share of common stock (in dollars per share)	$ 1.26	$ 1.32	$ 2.06	$ 2.06