CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Net sales and operating revenues	$ 2,574,000,000	$ 2,292,000,000
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	2,198,000,000	1,929,000,000
Engineering, research, and development	41,000,000	39,000,000
Selling, general, and administrative	153,000,000	141,000,000
Depreciation and amortization of other intangibles	59,000,000	52,000,000
Costs and expenses	2,451,000,000	2,161,000,000
Other expense
Loss on sale of receivables	(3,000,000)	(1,000,000)
Other expense	(3,000,000)	(9,000,000)
Total other expense	(6,000,000)	(10,000,000)
Earnings before interest expense, income taxes, and noncontrolling interests	117,000,000	121,000,000
Interest expense	20,000,000	15,000,000
Earnings before income taxes and noncontrolling interests	97,000,000	106,000,000
Income tax expense	25,000,000	33,000,000
Net income	72,000,000	73,000,000
Less: Net income attributable to noncontrolling interests	14,000,000	14,000,000
Net income attributable to Tenneco Inc.	$ 58,000,000	$ 59,000,000
Weighted average shares of common stock outstanding —
Basic (in shares)	51,211,643	53,856,352
Diluted (in shares)	51,501,643	54,231,759
Basic earnings per share of common stock (in dollars per share)	$ 1.13	$ 1.10
Diluted earnings per share of common stock (in dollars per share)	$ 1.13	$ 1.09
Cash dividends declared (in dollars per share)	$ 0.25	$ 0.25