CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Net sales and operating revenues	$ 2,537,000,000	$ 2,317,000,000	$ 5,111,000,000	$ 4,609,000,000
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	2,159,000,000	1,949,000,000	4,357,000,000	3,878,000,000
Engineering, research, and development	42,000,000	36,000,000	83,000,000	75,000,000
Selling, general, and administrative	156,000,000	252,000,000	309,000,000	393,000,000
Depreciation and amortization of other intangibles	59,000,000	55,000,000	118,000,000	107,000,000
Costs and expenses	2,416,000,000	2,292,000,000	4,867,000,000	4,453,000,000
Other (expense) income
Loss on sale of receivables	(2,000,000)	(1,000,000)	(5,000,000)	(2,000,000)
Other (expense) income	(6,000,000)	3,000,000	(9,000,000)	(6,000,000)
Total other (expense) income	(8,000,000)	2,000,000	(14,000,000)	(8,000,000)
Earnings before interest expense, income taxes, and noncontrolling interests	113,000,000	27,000,000	230,000,000	148,000,000
Interest expense	20,000,000	20,000,000	40,000,000	35,000,000
Earnings before income taxes and noncontrolling interests	93,000,000	7,000,000	190,000,000	113,000,000
Income tax expense (benefit)	27,000,000	(8,000,000)	52,000,000	25,000,000
Net income	66,000,000	15,000,000	138,000,000	88,000,000
Less: Net income attributable to noncontrolling interests	16,000,000	18,000,000	30,000,000	32,000,000
Net income (loss) attributable to Tenneco Inc.	$ 50,000,000	$ (3,000,000)	$ 108,000,000	$ 56,000,000
Weighted average shares of common stock outstanding —
Basic (in shares)	51,258,668	53,505,341	51,232,639	53,662,375
Diluted (in shares)	51,607,224	53,505,341	51,546,015	53,952,918
Basic earnings (loss) per share of common stock (in dollars per share)	$ 0.98	$ (0.05)	$ 2.12	$ 1.05
Diluted earnings (loss) per share of common stock (in dollars per share)	$ 0.98	$ (0.05)	$ 2.10	$ 1.05
Cash dividends declared (in dollars per share)	$ 0.25	$ 0.25	$ 0.50	$ 0.50