CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Net sales and operating revenues	$ 2,372,000,000	$ 2,274,000,000	$ 7,483,000,000	$ 6,883,000,000
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	2,014,000,000	1,911,000,000	6,371,000,000	5,789,000,000
Engineering, research, and development	39,000,000	40,000,000	122,000,000	115,000,000
Selling, general, and administrative	141,000,000	127,000,000	450,000,000	520,000,000
Depreciation and amortization of other intangibles	65,000,000	58,000,000	183,000,000	165,000,000
Costs and expenses	2,259,000,000	2,136,000,000	7,126,000,000	6,589,000,000
Other expense
Loss on sale of receivables	3,000,000	2,000,000	8,000,000	4,000,000
Other expense, net	6,000,000	2,000,000	15,000,000	8,000,000
Total other expense	9,000,000	4,000,000	23,000,000	12,000,000
Earnings before interest expense, income taxes, and noncontrolling interests	104,000,000	134,000,000	334,000,000	282,000,000
Interest expense	21,000,000	19,000,000	61,000,000	54,000,000
Earnings before income taxes and noncontrolling interests	83,000,000	115,000,000	273,000,000	228,000,000
Income tax expense	20,000,000	16,000,000	72,000,000	41,000,000
Net income	63,000,000	99,000,000	201,000,000	187,000,000
Less: Net income attributable to noncontrolling interests	9,000,000	16,000,000	39,000,000	48,000,000
Net income attributable to Tenneco Inc.	$ 54,000,000	$ 83,000,000	$ 162,000,000	$ 139,000,000
Weighted average shares of common stock outstanding —
Basic (in shares)	51,272,618	52,508,078	51,247,664	53,265,149
Diluted (in shares)	51,401,829	52,687,656	51,395,927	53,501,864
Basic earnings per share of common stock (in dollars per share)	$ 1.05	$ 1.57	$ 3.17	$ 2.61
Diluted earnings per share of common stock (in dollars per share)	$ 1.05	$ 1.57	$ 3.16	$ 2.60
Cash dividends declared (in dollars per share)	$ 0.25	$ 0.25	$ 0.75	$ 0.75