CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues
Net sales and operating revenues	$ 4,931	$ 4,332	$ 14,245	$ 13,646
Costs and expenses
Cost of sales (exclusive of depreciation and amortization)	4,388	3,776	12,663	11,810
Selling, general, and administrative	219	240	728	764
Depreciation and amortization	140	147	429	447
Engineering, research, and development	71	71	220	216
Restructuring charges, net and asset impairments	3	(4)	45	48
Costs and expenses	4,821	4,230	14,085	13,285
Other income (expense)
Non-service pension and postretirement benefit (costs) credits	3	4	9	10
Equity in earnings (losses) of nonconsolidated affiliates, net of tax	3	10	25	47
Gain (loss) on extinguishment of debt	0	0	0	8
Other income (expense), net	13	9	27	30
Other income (expense)	19	23	61	95
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	129	125	221	456
Interest expense	(90)	(66)	(232)	(205)
Earnings (loss) before income taxes and noncontrolling interests	39	59	(11)	251
Income tax (expense) benefit	(67)	(34)	(140)	(122)
Net income (loss)	(28)	25	(151)	129
Less: Net income (loss) attributable to noncontrolling interests	16	10	52	59
Net income (loss) attributable to Tenneco Inc.	$ (44)	$ 15	$ (203)	$ 70
Basic earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (0.53)	$ 0.17	$ (2.44)	$ 0.85
Weighted average shares outstanding (in shares)	83,697,158	82,310,645	83,484,392	82,171,755
Diluted earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (0.53)	$ 0.17	$ (2.44)	$ 0.83
Weighted average shares outstanding (in shares)	83,697,158	84,103,606	83,484,392	83,475,736