CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues
Net sales and operating revenues	$ 4,649	$ 4,731
Costs and expenses
Cost of sales (exclusive of depreciation and amortization)	4,108	4,061
Selling, general, and administrative	252	255
Depreciation and amortization	146	155
Engineering, research, and development	75	72
Restructuring charges, net and asset impairments	13	25
Costs and expenses	4,594	4,568
Other income (expense)
Non-service pension and postretirement benefit (costs) credits	3	3
Equity in earnings (losses) of nonconsolidated affiliates, net of tax	12	22
Gain (loss) on extinguishment of debt	0	8
Other income (expense), net	7	8
Total other expense (income)	22	41
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	77	204
Interest expense	(66)	(70)
Earnings (loss) before income taxes and noncontrolling interests	11	134
Income tax (expense) benefit	(30)	(47)
Net income (loss)	(19)	87
Less: Net income (loss) attributable to noncontrolling interests	19	22
Net income (loss) attributable to Tenneco Inc.	$ (38)	$ 65
Basic earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (0.46)	$ 0.80
Weighted average shares outstanding (in shares)	83,132,797	81,953,133
Diluted earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (0.46)	$ 0.79
Weighted average shares outstanding (in shares)	83,132,797	82,524,129