CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Net sales and operating revenues	$ 3,836,000,000	$ 4,484,000,000
Costs and expenses
Cost of sales (exclusive of depreciation and amortization)	3,339,000,000	3,870,000,000
Selling, general, and administrative	249,000,000	318,000,000
Depreciation and amortization	171,000,000	169,000,000
Engineering, research, and development	77,000,000	92,000,000
Restructuring charges, net and asset impairments	484,000,000	16,000,000
Goodwill and intangible impairment charges	383,000,000	60,000,000
Costs and expenses	4,703,000,000	4,525,000,000
Other income (expense)
Non-service pension and other postretirement benefit (costs) credits	1,000,000	(2,000,000)
Equity in earnings (losses) of nonconsolidated affiliates, net of tax	13,000,000	16,000,000
Other income (expense), net	8,000,000	3,000,000
Total other expense (income)	22,000,000	17,000,000
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	(845,000,000)	(24,000,000)
Interest expense	(75,000,000)	(81,000,000)
Earnings (loss) before income taxes and noncontrolling interests	(920,000,000)	(105,000,000)
Income tax (expense) benefit	94,000,000	0
Net income (loss)	(826,000,000)	(105,000,000)
Less: Net income (loss) attributable to noncontrolling interests	13,000,000	12,000,000
Net income (loss) attributable to Tenneco Inc.	$ (839,000,000)	$ (117,000,000)
Basic earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (10.34)	$ (1.44)
Weighted average shares outstanding (in shares)	81,168,562	80,874,637
Diluted earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (10.34)	$ (1.44)
Weighted average shares outstanding (in shares)	81,168,562	80,874,637