Tenneco (TEN) 10-Q 5 Aug 21 2021 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2021	Aug. 02, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	1-12387
Entity Registrant Name	TENNECO INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0515284
Entity Address, Address Line One	500 North Field Drive
Entity Address, City or Town	Lake Forest
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60045
City Area Code	847
Local Phone Number	482-5000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		81,972,032
Entity Central Index Key	0001024725
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Class A
Document Information [Line Items]
Title of 12(b) Security	Class A Voting Common Stock, par value $0.01 per share
Trading Symbol	TEN
Security Exchange Name	NYSE
Preferred Stock Purchase Rights
Document Information [Line Items]
Title of 12(b) Security	Preferred Stock Purchase Rights
Security Exchange Name	NYSE
No Trading Symbol Flag	true

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Net sales and operating revenues	$ 4,583	$ 2,637	$ 9,314	$ 6,473
Costs and expenses
Cost of sales (exclusive of depreciation and amortization)	3,973	2,498	8,034	5,837
Selling, general, and administrative	269	195	524	444
Depreciation and amortization	145	159	300	330
Engineering, research, and development	73	55	145	132
Restructuring charges, net and asset impairments	27	121	52	605
Goodwill and intangible impairment charges	0	0	0	383
Costs and expenses	4,487	3,028	9,055	7,731
Other income (expense)
Non-service pension and postretirement benefit (costs) credits	3	1	6	2
Equity in earnings (losses) of nonconsolidated affiliates, net of tax	15	4	37	17
Gain (loss) on extinguishment of debt	0	0	8	0
Other income (expense), net	13	11	21	19
Total other expense (income)	31	16	72	38
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	127	(375)	331	(1,220)
Interest expense	(69)	(66)	(139)	(141)
Earnings (loss) before income taxes and noncontrolling interests	58	(441)	192	(1,361)
Income tax (expense) benefit	(41)	101	(88)	195
Net income (loss)	17	(340)	104	(1,166)
Less: Net income (loss) attributable to noncontrolling interests	27	10	49	23
Net income (loss) attributable to Tenneco Inc.	$ (10)	$ (350)	$ 55	$ (1,189)
Basic earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (0.12)	$ (4.30)	$ 0.68	$ (14.64)
Weighted average shares outstanding (in shares)	82,251,559	81,350,773	82,102,310	81,259,667
Diluted earnings (loss) per share:
Earnings (loss) per share (in dollars per share)	$ (0.12)	$ (4.30)	$ 0.67	$ (14.64)
Weighted average shares outstanding (in shares)	82,251,559	81,350,773	83,122,354	81,259,667

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 17	$ (340)	$ 104	$ (1,166)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	62	42	10	(177)
Defined benefit plans	3	(5)	6	(1)
Cash flow hedges	(1)	4	(3)	2
Other comprehensive income (loss), net of tax	64	41	13	(176)
Comprehensive income (loss)	81	(299)	117	(1,342)
Less: Comprehensive income (loss) attributable to noncontrolling interests	31	17	47	10
Comprehensive income (loss) attributable to common shareholders	$ 50	$ (316)	$ 70	$ (1,352)

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 713	$ 798
Restricted cash	6	5
Receivables:
Customer notes and accounts, net	2,636	2,423
Other	111	105
Inventories	1,920	1,743
Prepayments and other current assets	619	619
Total current assets	6,005	5,693
Property, plant, and equipment, net	2,956	3,057
Long-term receivables, net	9	8
Goodwill	508	508
Intangibles, net	1,125	1,194
Investments in nonconsolidated affiliates	547	581
Deferred income taxes	272	285
Other assets	519	526
Total assets	11,941	11,852
Current liabilities:
Short-term debt, including current maturities of long-term debt	126	162
Accounts payable	3,101	2,917
Accrued compensation and employee benefits	456	365
Accrued income taxes	69	54
Accrued expenses and other current liabilities	1,061	1,188
Total current liabilities	4,813	4,686
Long-term debt	5,081	5,171
Deferred income taxes	96	89
Pension and postretirement benefits	1,057	1,101
Deferred credits and other liabilities	514	546
Commitments and contingencies (Note 12)
Total liabilities	11,561	11,593
Redeemable noncontrolling interests	108	78
Tenneco Inc. shareholders’ equity:
Preferred stock - $0.01 par value; none issued	0	0
Additional paid-in capital	4,449	4,442
Accumulated other comprehensive loss	(729)	(744)
Accumulated deficit	(2,833)	(2,888)
Shares held as treasury stock - at cost: (June 30, 2021 and December 31, 2020 - 14,592,888)	(930)	(930)
Total Tenneco Inc. shareholders’ equity (deficit)	(42)	(119)
Noncontrolling interests	314	300
Total equity	272	181
Total liabilities, redeemable noncontrolling interests, and equity	11,941	11,852
Class A
Tenneco Inc. shareholders’ equity:
Common stock	1	1
Class B
Tenneco Inc. shareholders’ equity:
Common stock	$ 0	$ 0

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued (in shares)	0	0
Class A
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	96,564,069	75,714,163
Treasury shares (in shares)	14,592,888	14,592,888
Class B
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	0	20,308,454
Treasury shares (in shares)	0

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net income (loss)	$ 104	$ (1,166)
Adjustments to reconcile net income (loss) to cash (used) provided by operating activities:
Goodwill and intangible impairment charges	0	383
Depreciation and amortization	300	330
Deferred income taxes	12	(242)
Stock-based compensation	9	9
Restructuring charges and asset impairments, net of cash paid	3	540
Change in pension and other postretirement benefit plans	(11)	(26)
Equity in earnings of nonconsolidated affiliates	(37)	(17)
Cash dividends received from nonconsolidated affiliates	58	18
Loss (gain) on sale of assets and other	(7)	(1)
Changes in operating assets and liabilities:
Receivables	(481)	174
Inventories	(193)	292
Payables and accrued expenses	249	(540)
Accrued interest and accrued income taxes	34	(17)
Other assets and liabilities	(17)	(68)
Net cash (used) provided by operating activities	23	(331)
Investing Activities
Proceeds from sale of assets	12	5
Net proceeds from sale of business	1	0
Proceeds from sale of investment in nonconsolidated affiliates	3	0
Cash payments for property, plant, and equipment	(185)	(212)
Proceeds from deferred purchase price of factored receivables	254	91
Other	0	1
Net cash (used) provided by investing activities	85	(115)
Financing Activities
Proceeds from term loans and notes	838	96
Repayments of term loans and notes	(939)	(133)
Debt issuance costs of long-term debt	(12)	(16)
Borrowings on revolving lines of credit	2,876	4,821
Payments on revolving lines of credit	(2,871)	(3,536)
Issuance (repurchase) of common shares	(2)	(1)
Net increase (decrease) in bank overdrafts	0	59
Distributions to noncontrolling interest partners	(8)	(2)
Payments on securitization programs and other	(71)	(1)
Net cash (used) provided by financing activities	(189)	1,287
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	(3)	(36)
Increase (decrease) in cash, cash equivalents, and restricted cash	(84)	805
Cash, cash equivalents, and restricted cash, beginning of period	803	566
Cash, cash equivalents, and restricted cash, end of period	719	1,371
Supplemental Cash Flow Information
Cash paid during the period for interest	100	123
Cash paid during the period for income taxes, net of refunds	62	75
Lease assets obtained in exchange for new operating lease liabilities	26	54
Non-cash inventory charge due to aftermarket product line exit	44	82
Non-cash Investing Activities
Period end balance of accounts payable for property, plant, and equipment	86	86
Deferred purchase price of receivables factored in the period	266	95
Reduction in assets from redeemable noncontrolling interest transaction with owner	$ 0	$ 53

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Total Tenneco Inc. Shareholders’ Equity (Deficit)	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Treasury Stock	Noncontrolling Interests	Total Equity
Beginning balance (in shares) at Dec. 31, 2019			1
Balance at beginning of period at Dec. 31, 2019		$ 1,425		$ 4,432	$ (711)	$ (1,367)	$ (930)	$ 194	$ 1,619
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(839)				(839)		2	(837)
Foreign currency translation adjustments		(199)			(199)			(13)	(212)
Defined benefit plans		4			4				4
Cash flow hedges		(2)			(2)				(2)
Comprehensive income (loss)		(1,036)						(11)	(1,047)
Stock-based compensation, net		2		2					2
Reclassification of redeemable noncontrolling interest to permanent equity								82	82
Distributions declared to noncontrolling interests		(7)		(7)					(7)
Ending balance (in shares) at Mar. 31, 2020			1
Balance at end of period at Mar. 31, 2020		384		4,427	(908)	(2,206)	(930)	265	649
Beginning balance (in shares) at Dec. 31, 2019			1
Balance at beginning of period at Dec. 31, 2019		1,425		4,432	(711)	(1,367)	(930)	194	1,619
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (1,166)
Foreign currency translation adjustments	(177)
Defined benefit plans	(1)
Cash flow hedges	2
Comprehensive income (loss)	(1,342)
Distributions declared to noncontrolling interests	(82)
Ending balance (in shares) at Jun. 30, 2020			1
Balance at end of period at Jun. 30, 2020		74		4,433	(874)	(2,556)	(930)	275	349
Beginning balance (in shares) at Mar. 31, 2020			1
Balance at beginning of period at Mar. 31, 2020		384		4,427	(908)	(2,206)	(930)	265	649
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(340)	(350)				(350)		6	(344)
Foreign currency translation adjustments	42	35			35			4	39
Defined benefit plans	(5)	(5)			(5)				(5)
Cash flow hedges	4	4			4				4
Comprehensive income (loss)	(299)	(316)						10	(306)
Stock-based compensation, net		6		6					6
Ending balance (in shares) at Jun. 30, 2020			1
Balance at end of period at Jun. 30, 2020		74		4,433	(874)	(2,556)	(930)	275	349
Beginning balance (in shares) at Dec. 31, 2020			1
Balance at beginning of period at Dec. 31, 2020	181	(119)		4,442	(744)	(2,888)	(930)	300	181
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		65				65		10	75
Foreign currency translation adjustments		(46)			(46)			(3)	(49)
Defined benefit plans		3			3				3
Cash flow hedges		(2)			(2)				(2)
Comprehensive income (loss)		20						7	27
Stock-based compensation, net		3		3					3
Distributions declared to noncontrolling interests								(2)	(2)
Ending balance (in shares) at Mar. 31, 2021			1
Balance at end of period at Mar. 31, 2021		(96)		4,445	(789)	(2,823)	(930)	305	209
Beginning balance (in shares) at Dec. 31, 2020			1
Balance at beginning of period at Dec. 31, 2020	181	(119)		4,442	(744)	(2,888)	(930)	300	181
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	104
Foreign currency translation adjustments	10
Defined benefit plans	6
Cash flow hedges	(3)
Comprehensive income (loss)	117
Distributions declared to noncontrolling interests	0
Ending balance (in shares) at Jun. 30, 2021			1
Balance at end of period at Jun. 30, 2021	272	(42)		4,449	(729)	(2,833)	(930)	314	272
Beginning balance (in shares) at Mar. 31, 2021			1
Balance at beginning of period at Mar. 31, 2021		(96)		4,445	(789)	(2,823)	(930)	305	209
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	17	(10)				(10)		8	(2)
Foreign currency translation adjustments	62	58			58			2	60
Defined benefit plans	3	3			3				3
Cash flow hedges	(1)	(1)			(1)				(1)
Comprehensive income (loss)	81	50						10	60
Stock-based compensation, net		4		4					4
Distributions declared to noncontrolling interests								(1)	(1)
Ending balance (in shares) at Jun. 30, 2021			1
Balance at end of period at Jun. 30, 2021	$ 272	$ (42)		$ 4,449	$ (729)	$ (2,833)	$ (930)	$ 314	$ 272

Description of Business

Description of Business	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	1. Description of Business Tenneco Inc. (“Tenneco” or “the Company”) was formed under the laws of Delaware in 1996. Tenneco designs, manufactures, markets, and distributes products and services for light vehicle, commercial truck, off-highway, industrial, motorsport, and aftermarket customers. The Company manufactures innovative performance solutions, clean air and powertrain products and systems, and serves both original equipment (“OE”) manufacturers and the repair and replacement markets worldwide.

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	2. Basis of Presentation Basis of Presentation — Interim Financial Statements Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations. These statements include all adjustments (consisting of normal recurring adjustments) management believes are necessary to fairly state the results of operations, comprehensive income, financial position, changes in shareholders’ equity, and cash flows. The Company’s management believes the disclosures are adequate to make the information presented not misleading when read in conjunction with the audited consolidated financial statements and the notes thereto included in its Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the Securities and Exchange Commission on February 24, 2021 (the “2020 Form 10-K”). Operating results for the three and six months ended June 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. There are many uncertainties related to the COVID-19 global pandemic that could negatively affect the Company's results of operations, financial position, and cash flows. Beginning in the first quarter of 2021, the Company made a change to its operating segments. This change consisted of moving a reporting unit within the Powertrain segment to the Ride Performance segment to align with a change in how the Chief Operating Decision Maker (“CODM”) allocates resources and assesses performance against the Company's key growth strategies. In addition, with this change to its segments, Ride Performance was renamed Performance Solutions. As such, prior period operating segment results and related disclosures have been conformed to reflect the Company's current operating segments. Reclassifications Certain amounts in the prior period have been aggregated or disaggregated to conform to current year presentation, as described above for the change in operating segments. Redeemable noncontrolling interests The Company has noncontrolling interests with redemption features. These redemption features could require the Company to make an offer to purchase the noncontrolling interests in the event of a change in control of Tenneco Inc. or certain of its subsidiaries or the passage of time. At June 30, 2021 and December 31, 2020, the Company held redeemable noncontrolling interests of $58 million and $45 million which were not currently redeemable or probable of becoming redeemable. The redemption of these redeemable noncontrolling interests is not solely within the Company’s control, therefore, they are presented in the temporary equity section of the Company’s condensed consolidated balance sheets. The Company does not believe it is probable the redemption features related to these noncontrolling interest securities will be triggered, as a change in control event is generally not probable until it occurs. As such, these noncontrolling interests have not been remeasured to redemption value. In addition, at June 30, 2021 and December 31, 2020, the Company held a redeemable noncontrolling interest of $50 million and $33 million which was probable of becoming redeemable. This noncontrolling interest is also presented in the temporary equity section of the Company’s condensed consolidated balance sheets and has been remeasured to its redemption value. The Company immediately recognizes changes to redemption value as a component of “Net income (loss) attributable to noncontrolling interests” in the condensed consolidated statements of income (loss). This redeemable noncontrolling interest represents a 9.5% ownership interest in Öhlins Intressenter AB (the “KÖ Interest”) retained by K Öhlin Holding AB (“Köhlin”), as a result of the Öhlins acquisition on January 10, 2019. Köhlin has an irrevocable right at any time after the third anniversary of the Öhlins acquisition to sell the KÖ Interest to the Company. During the six months ended June 30, 2021 and 2020, the Company recognized an increase of $18 million and $10 million to the carrying value of this noncontrolling interest. During the first quarter of 2020, the Company completed the process to make a tender offer of the shares it did not own for a subsidiary in India acquired by the Company as part of the Federal-Mogul LLC acquisition on October 1, 2018, in accordance with local regulations. As a result of completing the tender offer, the redeemable noncontrolling interest was no longer redeemable or probable of becoming redeemable and the amount of $82 million was reclassified to permanent equity during the six months ended June 30, 2020. Refer to Note 16, “Related Party Transactions”, for additional information related to the tender offer of this noncontrolling interest. The following is a rollforward of activities in the Company’s redeemable noncontrolling interests: Six Months Ended June 30, 2021 2020 Balance at beginning of period $ 78 $ 196 Net income (loss) attributable to redeemable noncontrolling interests 13 5 Other comprehensive income (loss) (1) (4) Noncontrolling interest tender offer redemption — (46) Redemption value measurement adjustment 18 10 Reclassification of noncontrolling interest to permanent equity — (82) Balance at end of period $ 108 $ 79 Earnings (loss) per share Basic earnings (loss) per share is calculated by dividing net earnings (loss) by the weighted average shares outstanding during the period. Diluted earnings (loss) per share reflects the weighted average effect of all potentially dilutive securities from the date of issuance. Actual weighted average shares outstanding used in calculating earnings (loss) per share were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Weighted average shares of common stock outstanding 82,251,559 81,350,773 82,102,310 81,259,667 Effect of dilutive securities: PSUs and RSUs — — 1,020,044 — Dilutive shares outstanding 82,251,559 81,350,773 83,122,354 81,259,667

Acquisitions and Divestitures

Acquisitions and Divestitures	6 Months Ended
	Jun. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Acquisitions and Divestitures	3. Acquisitions and Divestitures Assets Held for Sale

Restructuring Charges, Net and

Restructuring Charges, Net and Asset Impairments	6 Months Ended
	Jun. 30, 2021
Restructuring and Related Activities [Abstract]
Restructuring Charges, Net and Asset Impairments	4. Restructuring Charges, Net and Asset Impairments The Company’s restructuring activities are undertaken as necessary to execute management’s strategy and streamline operations, consolidate and take advantage of available capacity and resources, and ultimately achieve net cost reductions. Restructuring activities include efforts to integrate and rationalize the Company’s businesses and to relocate operations to best cost locations. The Company’s restructuring charges consist primarily of employee costs (principally severance and/or termination benefits), and facility closure and exit costs. For the three and six months ended June 30, 2021 and 2020, restructuring charges, net and asset impairments by segment are as follows: Three Months Ended June 30, 2021 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 5 $ 8 $ 2 $ 8 $ 1 $ 24 Asset impairments related to restructuring actions 1 — — — — 1 Other non-restructuring asset impairments — — — — 2 2 Total asset impairment charges 1 — — — 2 3 Total restructuring charges, net and asset impairments $ 6 $ 8 $ 2 $ 8 $ 3 $ 27 Three Months Ended June 30, 2020 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 15 $ 18 $ 22 $ 36 $ 1 $ 92 Asset impairments related to restructuring actions 25 — — 3 — 28 Other non-restructuring asset impairments — — — — 1 1 Impairment of assets held for sale (1) — — 1 — — Total asset impairment charges 24 — — 4 1 29 Total restructuring charges, net and asset impairments $ 39 $ 18 $ 22 $ 40 $ 2 $ 121 Six Months Ended June 30, 2021 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 7 $ 12 $ 11 $ 18 $ 1 $ 49 Asset impairments related to restructuring actions 1 — — — — 1 Other non-restructuring asset impairments — — — — 2 2 Total asset impairment charges 1 — — — 2 3 Total restructuring charges, net and asset impairments $ 8 $ 12 $ 11 $ 18 $ 3 $ 52 Six Months Ended June 30, 2020 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 17 $ 24 $ 22 $ 37 $ 5 $ 105 Asset impairments related to restructuring actions 25 — — 3 — 28 Other non-restructuring asset impairments — 455 — — 17 472 Impairment of assets held for sale (1) — — 1 — — Total asset impairment charges 24 455 — 4 17 500 Total restructuring charges, net and asset impairments $ 41 $ 479 $ 22 $ 41 $ 22 $ 605 Severance and other charges, net Three and six months ended June 30, 2021 The Company recognized $15 million and $32 million in severance and other charges expected to be paid for cost reduction initiatives aimed at optimizing the Company’s cost structure across all segments and regions during the three and six months ended June 30, 2021. The Company also recognized severance and other charges of $9 million and $20 million related to plant consolidations, relocations, and closures during the three and six months ended June 30, 2021. In response to the COVID-19 global pandemic, the Company announced Project Accelerate and executed global headcount reductions. The Company began implementing these actions during the second quarter of 2020 and expects to complete them during 2021. The Company recognized a reduction of $3 million in revisions to estimates for the cash severance costs expected to be paid in connection with these actions during the six months ended June 30, 2021. Motorparts recognized severance and other charges, and revisions to estimates as follows: • $1 million and $3 million for the three and six months ended June 30, 2021 in connection with its supply chain rationalization and distribution network initiative to achieve efficiencies and improve throughput to its customers in North America; • $1 million, along with a reduction of $4 million in revisions to estimates, for the three and six months ended June 30, 2021 in connection with cost reduction initiatives primarily in Europe; and • $7 million for the three and six months ended June 30, 2021 related to plant consolidations, relocations, and closures, primarily in Europe. Performance Solutions recognized severance and other charges as follows: • $7 million and $11 million for the three and six months ended June 30, 2021 in connection with cost reduction initiatives primarily in Europe; and • $1 million for the three and six months ended June 30, 2021 related to plant consolidations, relocations, and closures, primarily in North America. Clean Air recognized severance and other charges, and revisions to estimates as follows: • $2 million and $17 million for the three and six months ended June 30, 2021, along with a reduction of $1 million and $6 million in revisions to estimates for the three and six months ended June 30, 2021, in connection with cost reduction initiatives primarily in Europe; • $1 million and $3 million for the three and six months ended June 30, 2021 related to plant consolidations, relocations and closures primarily in North America and Asia Pacific; and • $3 million reduction due to a revision in estimates for the six months ended June 30, 2021 in connection with Project Accelerate. Powertrain recognized severance and other charges, and revisions to estimates as follows: • $9 million for the three and six months ended June 30, 2021 in connection with cost reduction initiatives primarily in Asia Pacific; • $3 million and $4 million reduction as a result of revisions to estimates for the three and six months ended June 30, 2021, in connection with cost reduction initiatives primarily in Europe; • $9 million for the six months ended June 30, 2021 related to plant consolidations, relocations, and closures, primarily in Europe and North America; and • $2 million and $4 million for the three and six months ended June 30, 2021 incurred related to an approved voluntary termination program at one of its European bearings plants aimed at reducing headcount. As of June 30, 2021, total severance related restructuring charges for this program aggregate to $12 million. Total severance related charges are expected to be approximately $31 million, comprised of approximately $10 million of postemployment benefits, including an early retirement program, and $21 million of special termination benefits. In addition, the Company expects to incur additional costs of approximately $2 million for customer validation, equipment transfer, and related expenditures. The Company also incurred $1 million in cash severance costs within its corporate component for the three and six months ended June 30, 2021. Three and six months ended June 30, 2020 The Company recognized $44 million and $51 million in severance and other charges of expected to be paid for cost reduction initiatives during the three and six months ended June 30, 2020. The Company also recognized severance and other charges of $23 million and $29 million related to plant consolidations, relocations, and closures during the three and six months ended June 30, 2020. The Company recognized charges of $25 million for cash severance costs expected to be paid in connection with Project Accelerate during the three and six months ended June 30, 2020. Motorparts recognized severance and other charges, and revisions to estimates as follows: • $4 million for the three and six months ended June 30, 2020 in connection with its supply chain rationalization and distribution network initiative to achieve efficiencies and improve throughput to its customers in North America; • $4 million and $6 million for the three and six months ended June 30, 2020, along with a reduction of $1 million in revisions to estimates for the three and six months ended June 30, 2020, in connection with cost reduction initiatives primarily in Europe; • $3 million and $4 million for the three and six months ended June 30, 2020, along with a reduction of $1 million in revisions to estimates for the six months ended June 30, 2020, related to plant consolidations, relocations, and closures primarily in Europe and Asia Pacific; and • $5 million for the three and six months ended June 30, 2020 in connection with Project Accelerate. Performance Solutions recognized severance and other charges, and revisions to estimates as follows: • $10 million for the three and six months ended June 30, 2020 in connection with cost reduction initiatives primarily in Europe; • $5 million and $12 million for the three and six months ended June 30, 2020, along with a reduction of $1 million in revisions to estimates for the six months ended June 30, 2020 related to plant consolidations, relocations, and closures, primarily in North America; and • $3 million for the three and six months ended June 30, 2020 in connection with Project Accelerate. Clean Air recognized severance and other charges, and revisions to estimates for the three and six months ended June 30, 2020 as follows: • $14 million, along with a reduction of $1 million in revisions to estimates, in connection with cost reduction initiatives primarily in Europe; • $1 million, along with a reduction of $1 million in revisions to estimates, related to plant consolidations, relocations, and closures primarily in Europe; and • $9 million in connection with Project Accelerate. Powertrain recognized severance and other charges, and revisions to estimates as follows: • $12 million and $14 million for the three and six months ended June 30, 2020 in connection with cost reduction initiatives primarily in Europe; • $16 million for the three and six months ended June 30, 2020, along with a reduction of $1 million in revisions to estimates for the six months ended June 30, 2020, related to plant consolidations, relocations, and closures, primarily in North America and Europe; • $7 million for the three and six months ended June 30, 2020 in connection with Project Accelerate; and • $1 million for the three and six months ended June 30, 2020 incurred related to an approved voluntary termination program at one of its European bearings plants aimed at reducing headcount. The Company also incurred $1 million in cash sev erance costs in connection with Project Accelerate for the three and six months ended June 30, 2020, as well as $4 million in cash sev erance costs for the elimination of certain redundant positions within its corporate component for the six months ended June 30, 2020. Restructuring reserve rollforward The following table provides a summary of the Company’s restructuring liabilities and related activity for each type of exit costs: Six Months Ended June 30, 2021 Six Months Ended June 30, 2020 Employee Costs Facility Closure and Other Costs Total Employee Costs Facility Closure and Other Costs Total Balance at beginning of period $ 99 $ 1 $ 100 $ 97 $ 4 $ 101 Provisions 31 3 34 10 5 15 Revisions to estimates (9) — (9) (2) — (2) Payments (21) (4) (25) (23) (7) (30) Foreign currency (1) — (1) (1) — (1) Balance at March 31 99 — 99 81 2 83 Provisions 30 2 32 90 6 96 Revisions to estimates (8) — (8) (4) — (4) Payments (22) (2) (24) (31) (4) (35) Balance at end of period $ 99 $ — $ 99 $ 136 $ 4 $ 140 Asset impairments Asset impairments related to restructuring actions During the three and six months ended June 30, 2021, as a result of the actions in the Motorparts segment, asset impairment charges of $1 million were recognized related to the write-down of property, plant and equipment. During the three and six months ended June 30, 2020, as a result of the actions in the Motorparts segment, asset impairment charges of $25 million were recognized which included $16 million related to the write-down of property, plant, and equipment to its fair value, and $9 million of impairment charge to its operating lease right-of-use assets. Refer to Note 5, “Inventories”, for additional information. During the three and six months ended June 30, 2020, the Powertrain segment incurred $3 million in asset impairment charges in connection with its plant relocation and closure actions . Other non-restructuring asset impairments As a result of changes in the business, during the second quarter of 2021, the Company assessed and concluded an impairment trigger had occurred for certain long-lived asset groups in its corporate component and recognized an impairment charge of $2 million during the three and six months ended June 30, 2021. The Company evaluates its long-lived assets for impairment whenever events or circumstances indicate the value of these long-lived asset groups are not recoverable. During the first quarter of 2020, the Company concluded impairment triggers had occurred for certain long-lived asset groups in the Performance Solutions segment as a result of the effects of the COVID-19 global pandemic on the Company’s projected financial information. Accordingly, the Company tested these long-lived asset groups for recoverability by performing undiscounted cash flow analyses. Based on these analyses, the net carrying values of these asset groups exceeded their undiscounted future cash flows. As such, the Company estimated the fair values of these asset groups at March 31, 2020 and compared them to their carrying values. As the net carrying values of these long-lived asset groups exceeded their fair values, the Company recorded long-lived asset impairment charges for property, plant, and equipment of $455 million during the six months ended June 30, 2020. Refer to Note 8, “Financial Instruments and Fair Value” for additional information on the fair value estimates used in these analyses. As a result of changes in the business, during the first quarter of 2020, the Company assessed and concluded an impairment trigger had occurred for certain long-lived asset groups in its corporate component. Accordingly, the Company tested these long-lived asset groups for recoverability. The Company estimated the fair value of these asset groups and compared it to the carrying value. As the net carrying value exceeded fair value, the Company recorded long-lived asset impairment charges of $1 million and $17 million during the three and six months ended June 30, 2020. Included in the asset impairment charges for the six months ended June 30, 2020 are $11 million of property, plant, and equipment and $6 million of operating lease right-of-use assets, included in “Other assets” within the condensed consolidated balance sheets.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Inventories	5. Inventories At June 30, 2021 and December 31, 2020, inventory by major classification was as follows: June 30, December 31, Finished goods $ 797 $ 758 Work in process 551 449 Raw materials 479 441 Materials and supplies 93 95 Total inventories $ 1,920 $ 1,743 Beginning in the second quarter of 2020, the Motorparts segment initiated a rationalization of its supply chain and distribution network to achieve supply chain efficiencies and improve throughput to its customers. As a result, certain assets including inventory, real estate, and personal property will no longer be utilized. As part of Motorparts' on-going efforts related to this initiative, it recognized an additional non-cash charge of $44 million to write-down inventory to its net realizable value, an additional $1 million impairment charge to write-down property, plant and equipment, and $1 million and $3 million in restructuring charges related to cash severance benefits and other costs during the three and six months ended June 30, 2021. During the three and six months ended June 30, 2020, the Motorparts segment recognized an $82 million non-cash charge to write-down inventory to its net realizable value, a $16 million impairment charge to write-down property, plant, and equipment to its fair value, a $9 million impairment charge to its operating lease right-of-use assets, and $4 million in restructuring charges related to cash severance benefits. Refer to Note 4, “Restructuring Charges, Net and Asset Impairments” for additional information.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	6. Goodwill and Other Intangible Assets As discussed in Note 2, “Basis of Presentation”, beginning in the first quarter of 2021, the Company moved a reporting unit within the Powertrain segment to the Ride Performance segment and Ride Performance was renamed Performance Solutions. Refer to Note 15, “Segment Information” for further information. At June 30, 2021 and December 31, 2020, goodwill consists of the following: Six Months Ended June 30, 2021 Motorparts Performance Solutions Clean Air Powertrain Total Gross carrying amount at December 31, 2020 $ 623 $ 549 $ 23 $ 59 $ 1,254 Foreign exchange — (3) — — (3) Gross carrying amount at March 31, 2021 623 546 23 59 1,251 Foreign exchange — 2 — — 2 Gross carrying amount at June 30, 2021 623 548 23 59 1,253 Accumulated impairment loss at December 31, 2020 (310) (377) — (59) (746) Foreign exchange — 3 — — 3 Accumulated impairment loss at March 31, 2021 (310) (374) — (59) (743) Foreign exchange — (2) — — (2) Accumulated impairment loss at June 30, 2021 (310) (376) — (59) (745) Net carrying value at June 30, 2021 $ 313 $ 172 $ 23 $ — $ 508 The following table shows a summary of the number of reporting units with a net carrying value of goodwill in each segment at June 30, 2021 and whether or not the reporting unit’s fair value exceeds its carrying value by more or less than 25% based on each respective reporting units most recent goodwill impairment analysis: Segments Motorparts Performance Solutions Clean Air Number of reporting units with goodwill 1 2 3 Number of reporting units where fair value exceeds carrying value: Greater than 25% 1 1 3 Less than 25% — 1 — Goodwill for reporting units where fair value exceeds carrying value: Greater than 25% $ 313 $ 7 $ 23 Less than 25% — 165 — $ 313 $ 172 $ 23 During the first quarter of 2020, the Company concluded it was more likely than not that the fair values of certain of its reporting units and its indefinite-lived intangible assets had declined below their carrying values as a result of the effects of the COVID-19 global pandemic on the Company’s projected financial information. The Company completed a goodwill impairment analysis for four of its reporting units with goodwill in the Motorparts, Performance Solutions, and Powertrain segments. The difference between the reporting units’ carrying values and fair values were recognized as impairment charges. The Company recognized $267 million in non-cash impairment charges related to its goodwill during the six months ended June 30, 2020, which represented full impairments of the goodwill in one reporting unit in the Performance Solutions segment and one reporting unit in the Powertrain segment, and partial impairments of goodwill in one reporting unit in the Motorparts segment and one reporting unit in the Performance Solutions segment. During the first quarter of 2020, the Company also completed an analysis to determine the fair value of its trade names and trademarks for its reporting units in the Motorparts and Performance Solutions segments. It was determined that their carrying values exceeded their fair values and the Company recognized $51 million in non-cash impairment charges related to these indefinite-lived intangible assets during the six months ended June 30, 2020, which represented a full impairment of the trade names and trademarks in one of the reporting units in the Motorparts segment, and a partial impairment of the trade names and trademarks in one of the reporting units in the Performance Solutions segment and one of the reporting units in the Motorparts segment. As discussed in more detail in Note 4, “Restructuring Charges, Net and Asset Impairments”, the Company concluded impairment triggers had occurred during the first quarter of 2020 for certain long-lived asset groups within the Performance Solutions segment. As a result, the Company recorded non-cash impairment charges of $65 million related to its definite-lived intangible assets during the six months ended June 30, 2020, which represented full impairments of the definite-lived intangible assets in two reporting units. Impairment charges for goodwill and intangible assets recognized by segment during the six months ended June 30, 2020 consist of the following: Six Months Ended June 30, 2020 Motorparts Performance Solutions Powertrain Total Goodwill impairment charges $ 70 $ 156 $ 41 $ 267 Trade names and trademarks intangible asset impairment charges 40 11 — 51 Definite-lived intangible asset impairment charges — 65 — 65 $ 110 $ 232 $ 41 $ 383 At June 30, 2021 and December 31, 2020, the Company’s intangible assets consist of the following: June 30, 2021 December 31, 2020 Useful Lives Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value Definite-lived intangible assets: Customer relationships and platforms 10 years $ 994 $ (328) $ 666 $ 995 $ (282) $ 713 Customer contracts 10 years 8 (6) 2 8 (6) 2 Patents 10 to 17 years 1 (1) — 1 (1) — Technology rights 10 to 30 years 137 (56) 81 139 (51) 88 Packaged kits know-how 10 years 54 (15) 39 54 (12) 42 Catalogs 10 years 47 (13) 34 47 (11) 36 Licensing agreements 3 to 5 years 65 (42) 23 66 (35) 31 Land use rights 28 to 46 years 50 (5) 45 49 (4) 45 $ 1,356 $ (466) 890 $ 1,359 $ (402) 957 Indefinite-lived intangible assets: Trade names and trademarks 235 237 Total $ 1,125 $ 1,194 The amortization expense associated with definite-lived intangible assets is as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Amortization expense $ 33 $ 32 $ 65 $ 66 The expected future amortization expense for the Company’s definite-lived intangible assets is as follows: 2021 2022 2023 2024 2025 2026 and thereafter Total Expected amortization expense $ 64 $ 125 $ 122 $ 114 $ 114 $ 351 $ 890

Investment in Nonconsolidated A

Investment in Nonconsolidated Affiliates	6 Months Ended
	Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investment in Nonconsolidated Affiliates	7. Investment in Nonconsolidated Affiliates No significant changes occurred in the Company’s ownership interest in nonconsolidated affiliates since December 31, 2020. The carrying amount of the Company’s investments in its nonconsolidated affiliates accounted for under the equity method exceeded its share of the underlying net assets by $278 million and $287 million at June 30, 2021 and December 31, 2020. The following tables present summarized aggregated financial information of the Company’s nonconsolidated affiliates for the three and six months ended June 30, 2021 and 2020. The amounts represent 100% of the interest in the nonconsolidated affiliates and not the Company’s proportionate share: Three Months Ended June 30, 2021 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 94 $ 52 $ 136 $ 282 Gross profit $ 29 $ 14 $ 29 $ 72 Income from continuing operations $ 25 $ 14 $ 15 $ 54 Net income $ 17 $ 13 $ 14 $ 44 Three Months Ended June 30, 2020 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 36 $ 11 $ 41 $ 88 Gross profit $ 6 $ 5 $ 6 $ 17 Income from continuing operations $ 4 $ 4 $ 2 $ 10 Net income $ 5 $ 4 $ 2 $ 11 Six Months Ended June 30, 2021 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 196 $ 101 $ 248 $ 545 Gross profit $ 64 $ 28 $ 51 $ 143 Income from continuing operations $ 57 $ 28 $ 30 $ 115 Net income $ 51 $ 25 $ 24 $ 100 Six Months Ended June 30, 2020 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 120 $ 41 $ 146 $ 307 Gross profit $ 32 $ 11 $ 26 $ 69 Income from continuing operations $ 27 $ 11 $ 11 $ 49 Net income $ 23 $ 10 $ 8 $ 41 Refer to Note 16, “Related Party Transactions”, for additional information on balances and transactions with equity method investments.

Financial Instruments and Fair

Financial Instruments and Fair Value	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments and Fair Value	8. Financial Instruments and Fair Value The Company is exposed to market risk, such as fluctuations in foreign currency exchange rates, commodity prices, equity price risk associated with share-based compensation awards, and changes in interest rates, which may result in cash flow risks. For exposures not offset within its operations, the Company may enter into various derivative or other financial instrument transactions pursuant to its risk management policies, which prohibit holding or issuing derivative financial instruments for speculative purposes. In certain cases, the Company may or may not designate certain derivatives instruments as hedges for accounting purposes. Designation of derivative instruments is performed on a transaction basis to support hedge accounting. The changes in fair value of these hedging instruments are offset in part or in whole by corresponding changes in the fair value or cash flows of the underlying exposures being hedged. The Company assesses the initial and ongoing effectiveness of its hedging relationships in accordance with its documented policy. Market Risks Foreign Currency Exchange Rate Risk The Company manufactures and sells its products globally. As a result, the Company’s financial results could be significantly affected by factors such as changes in foreign currency exchange rates or weak economic conditions in foreign markets in which the Company manufactures and sells its products. The Company generally tries to use natural hedges within its foreign currency activities to minimize foreign currency risk. Where natural hedges are not in place, the Company considers managing certain aspects of its foreign currency activities and larger transactions through the use of foreign currency options or forward contracts. Concentrations of Credit Risk Financial instruments, including cash equivalents and derivative contracts, expose the Company to counterparty credit risk for non-performance. The Company’s counterparties for cash equivalents and derivative contracts are banks and financial institutions that meet the Company’s requirement of high credit standing. The Company’s concentration of credit risk related to derivative contracts at June 30, 2021 and December 31, 2020 is not considered material to the condensed consolidated financial statements. Equity Price Risk The Company has deferred compensation liabilities and certain cash-settled share-based incentive compensation liabilities that are dependent upon the Company’s stock price. These liabilities increase as the stock price increases and decrease as the stock price decreases. The Company has entered into certain financial instruments that move in the opposite direction of these liabilities. The market risk related to the deferred compensation liability and vested portion of the cash-settled share-based incentive compensation awards have been substantially mitigated. Significant market risk still exists with respect to the unvested cash-settled share-based incentive compensation grant awards which have not yet been accrued. Refer to “ Other Financial Instruments ” section below for additional details on these liabilities and the related financial instruments used to reduce the Company's equity price risk. Fair Value A three-level valuation hierarchy, based upon observable and unobservable inputs, is used for fair value measurements. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect market assumptions based on the best evidence available. A financial instrument’s categorization within the hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fair value hierarchy definition prioritizes the inputs used in measuring fair value into the following levels: Level 1 — Quoted prices in active markets for identical assets or liabilities. Level 2 — Inputs, other than quoted prices in active markets, that are observable either directly or indirectly. Level 3 — Unobservable inputs based on the Company's own assumptions. Assets and Liabilities Measured at Fair Value on a Recurring Basis Asset and Liability Instruments The carrying value of cash and cash equivalents, restricted cash, short and long-term receivables, accounts payable, and short-term debt approximates fair value. Derivative Instruments The Company presents its derivative positions and any related material collateral under master netting agreements on a net basis. Derivative gains and losses associated with undesignated hedges are recognized in “Cost of sales (exclusive of depreciation and amortization)” in the condensed consolidated statements of income (loss). Foreign Currency Forward Contracts The Company enters into foreign currency forward purchase and sale contracts to mitigate its exposure to changes in exchange rates on certain intercompany and third-party trade receivables a nd payables. The Company calculates the fair value of its foreign currency contracts using currency forward rates (level 2), to calculate forward values, and then discounts the forward values. The discount rates for all derivative contracts are based on bank deposit rates. The fair value of t hese derivative instrum ents at June 30, 2021 and December 31, 2020 is not considered material to the condensed consolidated financial statements. The following table summarizes by position the notional amounts for foreign currency forward contracts at June 30, 2021, all of which mature in the next twelve months: Notional Amount Long positions $ 277 Short positions $ (282) Other Financial Instruments Cash-Settled Share and Index Swap Transactions The Company has certain employee compensation arrangements, including deferred compensation and cash-settled share-based units granted under its long-term incentive plan, that are valued based on the Company's stock price. As of June 30, 2021 and December 31, 2020, the share equivalents outstanding related to cash-settled share-based awards are as follows: June 30, December 31, Restricted Stock Units (RSUs) 1,758,443 1,878,220 Performance Share Units (PSUs) 2,990,493 — 4,748,936 1,878,220 Deferred compensation arrangements 1,584,039 1,125,605 The Company has entered into financial instruments to mitigate the risk associated with the deferred compensation liability and vested portion of the cash-settled share-based incentive compensation awards. In the second quarter of 2021, the Company entered into an additional agreement to increase the number of common share equivalents from 1,700,000 at December 31, 2020 to 3,200,000 at June 30, 2021 to mitigate additional market risk. These financial instruments use the Company’s stock price as an observable input (level 2) in determining fair value. The estimated fair value of these financial instruments at June 30, 2021 and December 31, 2020 is as follows: Balance sheet classification June 30, December 31, Other financial instruments in asset positions Prepayments and other current assets $ 29 $ 1 Other financial instruments in liability positions (a) Accrued expenses and other current liabilities $ 3 $ — (a) There is cash collateral of $15 million and $7 million at June 30, 2021 and December 31, 2020 associated with this instrument, which is included in “Prepayments and other current assets” in the condensed consolidated balance sheets. The gains and losses associated with these other financial instruments is recognized in “Selling, general, and administrative” in the condensed consolidated statements of income (loss). Hedging Instruments Cash Flow Hedges — Commodity Price Risk The Company’s production processes are dependent upon the supply of certain raw materials that are exposed to price fluctuations on the open market. Commodity rate price forward contracts are executed to offset a portion of the ex posure to potential change in prices for raw materials. The Company monitors its commodity price risk exposures regularly to maximize the overall effectiveness of its commodity forward contracts. The Company has designated these contracts as cash flow hedging instruments. The Company records unrecognized gains and losses in other comprehensive income (loss) (“OCI” or “OCL”) and makes reclassifying adjustments into “Cost of sales (exclusive of depreciation and amortization)” within the condensed consolidated statements of income (loss) when the underlying hedged transaction is recognized in earnings. The Company had commodity derivatives outstanding with an equivalent notional amount of $40 million and $10 million at June 30, 2021 and December 31, 2020. Substantially all of the commodity price hedge contracts mature within one year. The Company calculates the fair value of its commodity contracts using commodity forward rates (level 2), to calculate forward values, and then discounts the forward values. The discount rates for all derivative contracts are based on bank deposit rates. The fair value of these derivative instruments at June 30, 2021 and December 31, 2020 is not considered material to the condensed consolidated financial statements. Net Investment Hedge — Foreign Currency Borrowings At December 31, 2020, the Company had foreign currency denominated debt, of which €344 million or $420 million, was designated as a net investment hedge in certain foreign subsidiaries and affiliates of the Company and was included in “Long-term debt” in the condensed consolidated balance sheets. Changes to its carrying value were included in the condensed consolidated statements of changes in shareholders’ equity in the foreign currency translation component of OCL and offset against the translation adjustments on the underlying net assets of those foreign subsidiaries and affiliates, which are also recorded in OCL. All of the outstanding foreign currency borrowings related to the net investment hedge were discharged on March 17, 2021, as a result, there are no outstanding foreign currency borrowings designated as a net investment hedge at June 30, 2021. The Company’s debt instruments are discussed further in Note 9, “Debt and Other Financing Arrangements”. The following table represents the amount of gain (loss) recognized in accumulated other comprehensive income (loss) before any reclassifications into net income (loss) for derivative and non-derivative instruments designated as hedges for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Commodity price hedge contracts designated as cash flow hedges $ (1) $ 5 $ 1 $ 2 Foreign currency borrowings designated as a net investment hedge $ — $ (16) $ 11 $ (2) The Company estimates approximately $1 million included in accumulated OCI or OCL at June 30, 2021 will be reclassified into net income (loss) within the following twelve months. Refer to Note 14, “Shareholders' Equity” for further information. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Assets may be measured at fair value on a nonrecurring basis. These assets include long-lived assets and intangible assets, which may be written down to fair value as a result of impairment. Long-Lived Assets The Company evaluates its long-lived assets for impairment whenever events or circumstances indicate the value of these long-lived asset groups are not recoverable. During the first quarter of 2020, the Company concluded certain impairment triggers had occurred for certain long-lived asset groups as a result of the effects of the COVID-19 global pandemic on the Company’s projected financial information. After failing the undiscounted cash flow recoverability test, the Company estimated the fair values of these long-lived asset groups and compared them to their net carrying values. The fair value measurements related to these long-lived asset groups rely primarily on Company-specific inputs and the Company’s assumptions about the use of the assets, as observable inputs are not available (level 3). To determine the fair value of the long-lived asset groups, the Company utilized an asset-based approach. The Company believes the assumptions and estimates used to determine the estimated fair values of the long-lived asset groups are reasonable; however, these estimates and assumptions are subject to a high degree of uncertainty. Due to the many variables inherent in estimating fair value, differences in assumptions could have a material effect on the results of the analyses. As the net carrying values of the long-lived asset groups exceeded their fair values, the Company recorded long-lived asset impairment charges consisting of $65 million of definite-lived intangible assets and $455 million of property, plant, and equipment, during the six months ended June 30, 2020. Refer to Note 4, “Restructuring Charges, Net and Asset Impairments” for additional information on asset impairments and refer to Note 6, “Goodwill and Other Intangible Assets”, for additional information on the definite-lived intangible asset impairments. Goodwill and Indefinite-Lived Intangible Assets During the first quarter of 2020, the Company concluded it was more likely than not that the fair values of certain of its reporting units and trade names and trademarks had declined below their carrying values as a result of the effects of the COVID-19 global pandemic on the Company’s projected financial information. The Company completed analyses to estimate the fair values of these reporting units and trade names and trademarks. The Company believes the assumptions and estimates used to determine the estimated fair values are reasonable; however, these estimates and assumptions are subject to a high degree of uncertainty. Due to the many variables inherent in estimating fair value, differences in assumptions could have a material effect on the results of the analyses. The basis of the goodwill impairment and indefinite-lived intangible asset analyses is the Company's current forecast of its annual budget and three-year strategic plan. This includes a projection of future cash flows, which requires the Company to make significant assumptions and estimates about the extent and timing of future cash flows and revenue growth rates. These represent Company-specific inputs and assumptions about the use of the assets, as observable inputs are not available (level 3). Due to the many variables inherent in estimating fair value and the relative size of the goodwill and indefinite-lived intangible assets, differences in assumptions could have a material effect on the results of the analyses. In the goodwill impairment analysis, for reporting units with goodwill, fair values are estimated using a combination of the income approach and market approach. The Company applies a 75% weighting to the income approach and a 25% weighting to the market approach. The most significant inputs in estimating the fair value of the Company's reporting units under the income approach are (i) projected operating margins, (ii) the revenue growth rate, and (iii) the discount rate, which is risk-adjusted based on the aforementioned inputs. For the indefinite-lived asset impairment analysis, the fair value is based upon the prospective stream of hypothetical after-tax royalty cost savings discounted at rates that reflect the rates of return appropriate for these intangible assets. The primary, and most sensitive, inputs utilized in determining fair values of trade names and trademarks are (i) projected branded product sales, (ii) the revenue growth rate, (iii) the royalty rate, and (iv) the discount rate, which is risk-adjusted based on the projected branded sales. Refer to Note 6, “Goodwill and Other Intangible Assets”, for additional information on the goodwill and indefinite-lived intangible asset impairments. Financial Instruments Not Carried at Fair Value The estimated fair value of the Company’s outstanding debt is as follows: June 30, 2021 December 31, 2020 Fair value Carrying Fair Carrying Fair Long-term debt (including current maturities): Term loans and senior notes Level 2 $ 5,061 $ 5,213 $ 5,153 $ 5,138 The fair value of the Company’s public senior notes and private borrowings under its New Credit Facility, as subsequently defined in Note 9, “Debt and Other Financing Arrangements”, is based on observable inputs , and any borrowings on the revolving credit facility approximate fair value

Debt and Other Financing Arrang

Debt and Other Financing Arrangements	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Debt and Other Financing Arrangements	9. Debt and Other Financing Arrangements Long-Term Debt A summary of the Company’s long-term debt obligations at June 30, 2021 and December 31, 2020 is set forth in the following table: June 30, 2021 December 31, 2020 Principal Carrying Amount (a) Principal Carrying Amount (a) Credit Facilities Revolver Borrowings Due 2023 $ — $ — $ — $ — Term Loans LIBOR plus 2.00% Term Loan A due 2019 through 2023 (b) 1,466 1,458 1,530 1,520 LIBOR plus 3.00% Term Loan B due 2019 through 2025 1,658 1,609 1,666 1,612 Senior Unsecured Notes $225 million of 5.375% Senior Notes due 2024 225 223 225 223 $500 million of 5.000% Senior Notes due 2026 500 495 500 494 Senior Secured Notes €300 million of Euribor plus 4.875% Euro Floating Rate Notes due 2024 (c) — — 366 370 €350 million of 5.000% Euro Fixed Rate Notes due 2024 (c) — — 428 445 $500 million of 7.875% Senior Secured Notes due 2029 500 490 500 489 $800 million of 5.125% Senior Secured Notes due 2029 (d) 800 786 — — Other debt, primarily foreign instruments 28 27 24 23 5,088 5,176 Less - maturities classified as current 7 5 Total long-term debt $ 5,081 $ 5,171 (a) Carrying amount is net of unamortized debt issuance costs and debt discounts or premiums. Total unamortized debt issuance costs were $87 million and $82 million at June 30, 2021 and December 31, 2020. Total unamortized debt (premium) discount, net was $1 million and $(20) million at June 30, 2021 and December 31, 2020. (b) The interest rate on Term Loan A at December 31, 2020 was LIBOR plus 2.50%. (c) The Company satisfied and discharged all of its 4.875% Euro Floating Rate Notes due 2024 and 5.000% Euro Fixed Rate Notes due 2024 on March 17, 2021. (d) On March 17, 2021, the Company issued $800 million aggregate principal amount of 5.125% senior secured notes due April 15, 2029. Interest payable semiannually on April 15 and October 15 of each year beginning on October 15, 2021 with principal due at maturity. The Company has a senior credit facility under the credit agreement dated October 1, 2018 (as amended, restated, supplemented or otherwise modified, the “New Credit Facility”) that provides $4.9 billion of total debt financing, consisting of a five-year $1.5 billion revolving credit facility, a five-year $1.7 billion term loan A facility (“Term Loan A”) and a seven-year $1.7 billion term loan B facility (“Term Loan B”). Short-Term Debt The Company’s short-term debt at June 30, 2021 and December 31, 2020 consists of the following: June 30, December 31, Maturities classified as current $ 7 $ 5 Short-term borrowings (a) 119 157 Total short-term debt $ 126 $ 162 (a) Includes borrowings under both committed credit facilities and uncommitted lines of credit and similar arrangements. Credit Facilities Financing Arrangements The table below shows the Company’s borrowing capacity on committed credit facilities at June 30, 2021 (in billions): June 30, 2021 Term Available (b) Tenneco Inc. revolving credit facility (a) 2023 $ 1.5 Tenneco Inc. Term Loan A 2023 — Tenneco Inc. Term Loan B 2025 — Subsidiaries’ credit agreements 2022 - 2028 — $ 1.5 (a) The Company is required to pay commitment fees under the revolving credit facility on the unused portion of the total commitment. (b) At June 30, 2021, the Company had $28 million of outstanding letters of credit under the revolving credit facility, which reduces the available borrowings under the revolving credit facility. The Company also had $77 million of outstanding letters of credit under uncommitted facilities at June 30, 2021. At June 30, 2021, the Company had liquidity of $2.2 billion comprised of $719 million of cash and $1.5 billion undrawn on its revolving credit facility. The Company had no outstanding borrowings on its revolving credit facility at June 30, 2021. At June 30, 2021 and December 31, 2020, the unamortized debt issuance costs related to the revolver of $14 million and $17 million are included in “Other assets” in the condensed consolidated balance sheets. Credit Facility New Credit Facility — Interest Rates At June 30, 2021, the interest rate on borrowings under the revolving credit facility and the Term Loan A facility was LIBOR plus 2.00% and will remain at LIBOR plus 2.00% for each relevant period for which the Company's consolidated net leverage ratio (as defined in the New Credit Facility) is less than 4.5 to 1 and greater than 3.0 to 1. The interest rate on borrowings under the revolving credit facility and the Term Loan A facility are subject to step downs in accordance with the credit agreement. New Credit Facility — Other Terms and Conditions Further information on interest rates, fees, and other terms and conditions of the New Credit Facility is included in the Company's 2020 Form 10-K. At June 30, 2021, the Company was in compliance with all the financial covenants of the New Credit Facility. Senior Notes On March 3, 2021, the Company provided notice of its intention to redeem all of the outstanding 5.000% euro denominated senior secured notes due July 15, 2024 (the “2024 Fixed Rate Secured Notes”) and all of the outstanding floating rate euro denominated senior secured notes due April 15, 2024 (the “2024 Floating Rate Secured Notes” and, together with the 2024 Fixed Rate Secured Notes, the “2024 Secured Notes”). On March 17, 2021, the Company using the net proceeds of the offering of 5.125% Senior Secured Notes, together with cash on hand, satisfied and discharged each of the indentures governing the 2024 Secured Notes in accordance with their terms. As a result, the Company recorded a gain on extinguishment of debt of $8 million for the six months ended June 30, 2021. Further information on the terms and conditions of the Senior Unsecured Notes and Senior Secured Notes is included in the Company's 2020 Form 10-K. At June 30, 2021, the Company was in compliance with all of its financial covenants under the indentures governing the Senior Unsecured Notes and Senior Secured Notes. Other Debt Other debt consists primarily of subsidiary debt. Factoring Arrangements In the Company's accounts receivable factoring programs, accounts receivables are transferred in their entirety to the acquiring entities and are accounted for as a sale. The fair value of assets received as proceeds in exchange for the transfer of accounts receivable under these factoring programs approximates the fair value of such receivables. Some of these programs have deferred purchase price arrangements with the banks. The Company is the servicer of the receivables under some of these arrangements and is responsible for performing all accounts receivable administration functions. Where the Company receives a fee to service and monitor these transferred accounts receivables, such fees are sufficient to offset the costs and as such, a servicing asset or liability is not recorded as a result of such activities. At June 30, 2021 and December 31, 2020, the amount of accounts receivable outstanding and derecognized for factoring arrangements was $1.0 billion and $1.0 billion, of which $0.4 billion and $0.4 billion relate to accounts receivable where the Company has continuing involvement. In addition, the deferred purchase price receivable was $62 million and $51 million at June 30, 2021 and December 31, 2020. For the three months ended June 30, 2021 and 2020, proceeds from the factoring of accounts receivable qualifying as sales were $1.3 billion and $0.7 billion, of which $1.0 billion and $0.5 billion were received on accounts receivable where the Company has continuing involvement. For the six months ended June 30, 2021 and 2020, proceeds from the factoring of accounts receivable qualifying as sales were $2.6 billion and $1.9 billion, of which $2.1 billion and $1.6 billion were received on accounts receivable where the Company has continuing involvement. The Company’s financing charges associated with the factoring of receivables, which are included in “Interest expense” in the condensed consolidated statements of income (loss), was $5 million and $4 million for the three months ended June 30, 2021 an d 2020, and $9 million and $10 million for the six months ended June 30, 2021 and 2020. If the Company were not able to factor receivables under these programs, its borrowings under its revolving credit agreement might increase. These programs provide the Company with access to cash at costs that are generally favorable to alternative sources of financing and allow the Company to reduce borrowings under its revolving credit agreement.

Pension Plans, Postretirement a

Pension Plans, Postretirement and Other Employee Benefits	6 Months Ended
	Jun. 30, 2021
Retirement Benefits [Abstract]
Pension Plans, Postretirement and Other Employee Benefits	10. Pension Plans, Postretirement and Other Employee Benefits The Company sponsors several defined benefit pension plans (“Pension Benefits”) and health care and life insurance benefits (“Other Postretirement Benefits” or “OPEB”) for certain employees and retirees around the world. Components of net periodic benefit costs (credits) for the three and six months ended June 30, 2021 and 2020 are as follows: Three Months Ended June 30, Pension Benefits Other Postretirement Benefits 2021 2020 U.S. Non-U.S. U.S. Non-U.S. 2021 2020 Service cost $ 1 $ 6 $ 1 $ 6 $ — $ — Interest cost 7 5 10 5 2 3 Expected return on plan assets (16) (4) (16) (4) — — Net amortization: Actuarial loss 3 3 1 2 — — Prior service cost (credit) — — — — (3) (2) Net pension and postretirement costs (credits) $ (5) $ 10 $ (4) $ 9 $ (1) $ 1 Six Months Ended June 30, Pension Benefits Other Postretirement Benefits 2021 2020 U.S. Non-U.S. U.S. Non-U.S. 2021 2020 Service cost $ 1 $ 13 $ 1 $ 12 $ — $ — Interest cost 15 9 20 9 3 5 Expected return on plan assets (32) (8) (32) (8) — — Net amortization: Actuarial loss 6 5 3 4 1 1 Prior service cost (credit) — — — — (5) (4) Net pension and postretirement costs (credits) $ (10) $ 19 $ (8) $ 17 $ (1) $ 2

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes For interim tax reporting, the Company estimates its annual effective tax rate and applies it to year-to-date ordinary income. Jurisdictions where no tax benefit can be recognized due to a valuation allowance are excluded from the estimated annual effective tax rate. The effect of including these jurisdictions on the quarterly effective rate calculation could result in a higher or lower effective tax rate during a quarter due to the mix and timing of actual earnings versus annual projections. The tax effects of certain items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are excluded from the estimated annual effective tax rate calculation and recognized in the interim period in which they occur. The Company considers both positive and negative evidence and evaluates its deferred tax assets quarterly to determine if valuation allowances are required or should be adjusted. This assessment considers, among other matters, the nature, frequency and amount of recent losses, the duration of statutory carryforward periods, reversals of existing taxable temporary differences, and tax planning strategies. In making such judgments, significant weight is given to evidence that can be objectively verified. For the three months ended June 30, 2021, the Company recorded an income tax expense of $41 million on income from continuing operations before income taxes of $58 million. This compares to an income tax benefit of $101 million on loss from continuing operations before income taxes of $441 million in the three months ended June 30, 2020. For the six months ended June 30, 2021, the Company recorded an income tax expense of $88 million on income from continuing operations before income taxes of $192 million. This compares to an income tax benefit of $195 million on loss from continuing operations before income taxes of $1,361 million in the six months ended June 30, 2020. Income tax expense for the three months ended June 30, 2021 and 2020 differs from the U.S. statutory rate due primarily to pre-tax income taxed at rates higher than the U.S. statutory rate and pre-tax losses with no tax benefits. Income tax expense for the six months ended June 30, 2021 differs from the U.S. statutory rate due primarily to pre-tax income taxed at rates higher than the U.S. statutory rate and pre-tax losses with no tax benefits. Income tax benefit for the six months ended June 30, 2020 differs from the U.S. statutory rate due primarily to $111 million of tax benefit recognized related to the asset impairment charges of $883 million, pre-tax income taxed at rates higher than the U.S. statutory rate, and pre-tax losses with no tax benefits.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. Commitments and Contingencies Environmental Matters The Company is subject to a variety of environmental and pollution control laws and regulations in all jurisdictions in which it operates. The Company has been notified by the U.S. Environmental Protection Agency, other national environmental agencies, and various provincial and state agencies that it may be a potentially responsible party (“PRP”) under such laws for the cost of remediating hazardous substances pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) and other national and state or provincial environmental laws. PRP designation typically requires the funding of site investigations and subsequent remedial activities. Many of the sites that are likely to be the costliest to remediate are often current or former commercial waste disposal facilities to which numerous companies sent wastes. Despite the potential joint and several liability which might be imposed on the Company under CERCLA and some of the other laws pertaining to these sites, its share of the total waste sent to these sites generally has been small. The Company believes its exposure for liability at these sites is not material. On a global basis, the Company has also identified certain other present and former properties at which it may be responsible for cleaning up or addressing environmental contamination, in some cases, as a result of contractual commitments and/or federal or state environmental laws. The Company is actively seeking to resolve these actual and potential statutory, regulatory, and contractual obligations. The Company expenses or capitalizes, as appropriate, expenditures for ongoing compliance with environmental regulations. At June 30, 2021, the Company has an obligation to remediate or contribute towards the remediation of certain sites, including the sites discussed above at which it may be a PRP. The Company’s estimated share of environmental remediation costs for all these sites is recognized in the condensed consolidated balance sheets at June 30, 2021 and December 31, 2020 as follows: June 30, December 31, Accrued expenses and other current liabilities $ 9 $ 8 Deferred credits and other liabilities 24 26 $ 33 $ 34 Based on information known to the Company from site investigations and the professional judgment of consultants, the Company has established reserves it believes are adequate for these costs. Although the Company believes these estimates of remediation costs are reasonable and are based on the latest available information, the costs are estimates, difficult to quantify based on the complexity of the issues, and are subject to revision as more information becomes available about the extent of remediation required. At some sites, the Company expects other parties will contribute to the remediation costs. In addition, certain environmental statutes provide the Company’s liability could be joint and several, meaning the Company could be required to pay amounts in excess of its share of remediation costs. The financial strength of the other PRPs at these sites has been considered, where appropriate, in the determination of the estimated liability. The Company does not believe any potential costs associated with its current status as a PRP, or as a liable party at the other locations referenced herein, will be material to its annual consolidated financial position, results of operations, or liquidity. Other Legal Proceedings, Claims and Investigations For many years, the Company has been and continues to be subject to lawsuits initiated by claimants alleging health problems as a result of exposure to asbestos. The Company’s current docket of active and inactive cases is approximately 500 cases in the United States and less than 50 in Europe. With respect to the claims filed in the United States, the substantial majority of the claims are related to alleged exposure to asbestos in the Company’s line of Walker® exhaust automotive products although a significant number of those claims appear also to involve occupational exposures sustained in industries other than automotive. A small number of claims have been asserted against one of the Company’s subsidiaries by railroad workers alleging exposure to asbestos products in railroad cars. The Company believes, based on scientific and other evidence, it is unlikely that U.S. claimants were exposed to asbestos by the Company’s former products and that, in any event, they would not be at increased risk of asbestos-related disease based on their work with these products. Further, many of these cases involve numerous defendants. Additionally, in many cases the plaintiffs either do not specify any, or specify the jurisdictional minimum, dollar amount for damages. With respect to the claims filed in Europe, the substantial majority relate to occupational exposure claims brought by current and former employees of Federal-Mogul facilities in France and amounts paid out were not material. A small number of occupational exposure claims have also been asserted against Federal-Mogul entities in Italy and Spain. As major asbestos manufacturers and/or users continue to go out of business or file for bankruptcy, the Company may experience an increased number of these claims. The Company vigorously defends itself against these claims as part of its ordinary course of business. In future periods, the Company could be subject to cash costs or charges to earnings if any of these matters are resolved unfavorably to the Company. To date, with respect to claims that have proceeded sufficiently through the judicial process, the Company has regularly achieved favorable resolutions. Accordingly, the Company presently believes that these asbestos-related claims will not have a material adverse effect on the Company’s annual consolidated financial position, results of operations or liquidity. The Company is also from time to time involved in other legal proceedings, claims or investigations. Some of these matters involve allegations of damages against the Company relating to environmental liabilities (including toxic tort, property damage and remediation), intellectual property matters (including patent, trademark and copyright infringement, and licensing disputes), personal injury claims (including injuries due to product failure, design or warning issues, and other product liability related matters), taxes, unclaimed property, employment matters, advertising matters, and commercial or contractual disputes, sometimes related to acquisitions or divestitures. Additionally, some of these matters involve allegations relating to legal compliance. While the Company vigorously defends itself against all of these legal proceedings, claims and investigations and take other actions to minimize its potential exposure, in future periods, the Company could be subject to cash costs or charges to earnings if any of these matters are resolved on unfavorable terms. Although the ultimate outcome of any legal matter cannot be predicted with certainty, based on current information, including the Company’s assessment of the merits of the particular claim, the Company does not expect the legal proceedings, claims or investigations currently pending against it will have any material adverse effect on its annual consolidated financial position, results of operations or liquidity. Asset Retirement Obligations The Company’s primary asset retirement obligations (“ARO”) activities relate to the removal of hazardous building materials at its facilities. The Company records an ARO at fair value upon initial recognition when the amount is probable and can be reasonably estimated. ARO fair values are determined based on the Company’s determination of what a third party would charge to perform the remediation activities, generally using a present value technique. The Company’s ARO liabilities at June 30, 2021 and December 31, 2020 are as follows: June 30, December 31, Accrued expenses and other current liabilities $ 2 $ 2 Deferred credits and other liabilities 12 12 $ 14 $ 14 Warranty Matters The Company provides warranties on some of its products. The warranty terms vary but range from one year up to limited lifetime warranties on some of its premium aftermarket products. Provisions for estimated expenses related to product warranty are made at the time products are sold or when specific warranty issues are identified with the Company’s products. These estimates are established using historical information about the nature, frequency, and average cost of warranty claims. The Company believes the warranty reserve is appropriate; however, actual claims incurred could differ from the original estimates, requiring adjustments to the reserve. The reserve is included in both current and long-term liabilities on the condensed consolidated balance sheets. The following represents the changes in the Company’s warranty accrual accounts for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Balance at beginning of period $ 67 $ 51 $ 62 $ 54 Accruals and revisions to estimates 18 1 32 4 Settlements (14) (1) (22) (7) Foreign currency 1 (1) — (1) Balance at end of period $ 72 $ 50 $ 72 $ 50

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	13. Share-Based Compensation Share-based compensation expense is included in “Selling, general, and administrative” in the condensed consolidated statements of income (loss). Total share-based compensation expense for the three and six months ended June 30, 2021 and 2020 is as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Cash-settled share-based compensation expense $ 12 $ 1 $ 16 $ 1 Share-settled share-based compensation expense 4 7 9 9 $ 16 $ 8 $ 25 $ 10 Cash-Settled Awards The Company has granted restricted stock units (“RSUs”) and performance share units (“PSUs”) to certain key employees that are payable in cash. These awards are classified as liabilities and remeasured at fair value each reporting date until settlement. Compensation expense for the RSUs is recognized ratably over the requisite service period. Compensation expense for the PSUs is recognized ratably over the requisite service period if it is probable the performance target related to the PSUs will be achieved and subsequently adjusted if this probability assessment changes. The PSUs have the potential to pay out between zero and 200%, based on performance target achievement. The following table reflects the outstanding cash-settled share-based awards as of June 30, 2021, and December 31, 2020: June 30, December 31, RSUs 1,758,443 1,878,220 PSUs 2,990,493 — 4,748,936 1,878,220 At June 30, 2021 and December 31, 2020, the liability of all cash-settled RSUs was $11 million and $3 million. The liability of all cash-settled PSUs at June 30, 2021 was $8 million and there were no outstanding PSUs at December 31, 2020. At June 30, 2021, there is $72 million in unrecognized costs on the cash-settled awards, using the quarter end stock price, that is expected to be recognized over a weighted-average period of approximately two years. Share-Settled Awards The Company has granted restricted stock, restricted stock units (“RSUs”), and performance share units (“PSUs”) that are payable in shares to certain key employees. These awards are classified as equity and are recognized at the grant date fair value. Compensation expense for the restricted stock and RSUs is recognized ratably over the requisite service period. Compensation expense for the PSUs is recognized ratably over the requisite service period if it is probable the performance target will be achieved, and subsequently adjusted if this probability assessment changes. The PSUs have the potential to pay out between zero and 200 percent, based on performance target achievement. The following table reflects the status of all share-settled RSUs and PSUs for the six months ended June 30, 2021: Share-Settled RSUs Share-Settled PSUs Units Weighted Avg. Units Weighted Avg. Nonvested balance at beginning of period 2,118,605 $ 26.00 527,105 $ 36.37 Granted 2,078,409 10.70 — — Vested (635,023) 34.09 (57,794) 49.18 Forfeited (171,384) 19.78 (134,361) 46.61 Nonvested balance at end of period 3,390,607 $ 14.89 334,950 $ 24.60

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Shareholders' Equity	14. Shareholders' Equity Common Stock Common Stock Outstanding The Company has authorized 175,000,000 shares ($0.01 par value) of Class A Common Stock at June 30, 2021 and December 31, 2020. The Company has authorized 25,000,000 shares ($0.01 par value) of Class B Common Stock at June 30, 2021 and December 31, 2020. Total common stock outstanding and changes in common stock issued are as follows: Class A Common Stock Class B Common Stock Six Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Shares issued at beginning of period 75,714,163 71,727,061 20,308,454 23,793,669 Issued pursuant to benefit plans 790,467 458,855 — — Withheld for taxes pursuant to benefit plans (249,015) (124,440) — — Class B common stock converted to Class A common stock 20,308,454 3,485,215 (20,308,454) (3,485,215) Shares issued at end of period 96,564,069 75,546,691 — 20,308,454 Treasury stock 14,592,888 14,592,888 — — Total shares outstanding 81,971,181 60,953,803 — 20,308,454 Class B Common Stock Conversion During the six months ended June 30, 2021, Icahn Enterprises L.P. (“IEP”) and its affiliates converted all of its remaining 20,308,454 shares of the Company’s Class B Common Stock into 20,308,454 shares of Class A Common Stock. Based on information contained in filings with the SEC as of August 4, 2021, IEP and its affiliates hold less than 10% of the Company’s outstanding Class A Common Stock. Shareholder Agreement In connection with the closing of the Federal-Mogul LLC acquisition, on October 1, 2018, the Company, American Entertainment Properties Corporation, IEP, and Icahn Enterprises Holdings L.P. entered into a Shareholders Agreement (the “Shareholders Agreement”). There have been no changes to the Shareholders Agreement during the six months ended June 30, 2021. Preferred Stock The Company had 50,000,000 shares of preferred stock ($0.01 par value) authorized at both June 30, 2021 and December 31, 2020. No shares of preferred stock were issued or outstanding at those dates. Accumulated Other Comprehensive Income (Loss) The following represents the Company’s changes in accumulated other comprehensive income (loss) by component, net of tax for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Foreign currency translation adjustments: Balance at beginning of period $ (441) $ (568) $ (395) $ (369) Other comprehensive income (loss) before reclassifications 58 34 12 (165) Reclassification from other comprehensive income (loss) — — — — Other comprehensive income (loss) 58 34 12 (165) Income tax benefit (provision) — 1 — 1 Balance at end of period (383) (533) (383) (533) Defined benefit plans: Balance at beginning of period (350) (338) (353) (342) Other comprehensive income (loss) before reclassifications — — — — Reclassification from other comprehensive income (loss) 3 1 7 4 Other comprehensive income (loss) 3 1 7 4 Income tax benefit (provision) — (6) (1) (5) Balance at end of period (347) (343) (347) (343) Cash flow hedges: Balance at beginning of period 2 (2) 4 — Other comprehensive income (loss) before reclassifications (1) 5 1 2 Reclassification from other comprehensive income (loss) — — (4) — Other comprehensive income (loss) (1) 5 (3) 2 Income tax benefit (provision) — (1) — — Balance at end of period 1 2 1 2 Accumulated other comprehensive loss at end of period $ (729) $ (874) $ (729) $ (874) Other comprehensive income (loss) attributable to noncontrolling interests $ 4 $ 7 $ (2) $ (13)

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Segment Information	15. Segment Information Tenneco consists of four operating segments, Motorparts, Performance Solutions, Clean Air, and Powertrain. Costs related to other business activities, primarily corporate headquarter functions, are disclosed separately from the four operating segments as “Corporate.” Beginning in the first quarter of 2021, the Company made a change to its operating segments. This change consisted of moving a reporting unit within the Powertrain segment to the Ride Performance segment to align with a change in how the CODM allocates resources and assesses performance against the Company’s key growth strategies. In addition, with this change to its segments, Ride Performance was renamed Performance Solutions. As such, prior period operating segment results and related disclosures have been conformed to reflect the Company's current operating segments. Management uses EBITDA including noncontrolling interests as the key performance measure of segment profitability and uses the measure in its financial and operational decision-making processes, for internal reporting, and for planning and forecasting purposes to effectively allocate resources. EBITDA including noncontrolling interests is defined as earnings before interest expense, income taxes, noncontrolling interests, and depreciation and amortization. Segment assets are not presented as it is not a measure reviewed by the CODM in allocating resources and assessing performance. EBITDA including noncontrolling interests should not be considered a substitute for results prepared in accordance with U.S. GAAP and should not be considered an alternative to net income, which is the most directly comparable financial measure to EBITDA including noncontrolling interests that is in accordance with U.S. GAAP. EBITDA including noncontrolling interests, as determined and measured by the Company, should not be compared to similarly titled measures reported by other companies. Segment results for the three and six months ended June 30, 2021 and 2020 are as follows: Reportable Segments Motorparts Performance Solutions Clean Air Powertrain Total Reclass & Elims Total For the Three Months Ended June 30, 2021 Revenues from external customers $ 794 $ 715 $ 2,024 $ 1,050 $ 4,583 $ — $ 4,583 Intersegment revenues $ 10 $ 23 $ 4 $ 47 $ 84 $ (84) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 4 $ — $ — $ 11 $ 15 $ — $ 15 For the Three Months Ended June 30, 2020 Revenues from external customers $ 559 $ 378 $ 1,140 $ 560 $ 2,637 $ — $ 2,637 Intersegment revenues $ 6 $ 21 $ 3 $ 21 $ 51 $ (51) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 1 $ 1 $ — $ 2 $ 4 $ — $ 4 For the Six Months Ended June 30, 2021 Revenues from external customers $ 1,513 $ 1,502 $ 4,148 $ 2,151 $ 9,314 $ — $ 9,314 Intersegment revenues $ 19 $ 49 $ 10 $ 94 $ 172 $ (172) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 7 $ 1 $ — $ 29 $ 37 $ — $ 37 For the Six Months Ended June 30, 2020 Revenues from external customers $ 1,265 $ 1,047 $ 2,685 $ 1,476 $ 6,473 $ — $ 6,473 Intersegment revenues $ 15 $ 50 $ 9 $ 59 $ 133 $ (133) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 3 $ 1 $ — $ 13 $ 17 $ — $ 17 Segment EBITDA including noncontrolling interests and the reconciliation to earnings (loss) before interest expense, income taxes, and noncontrolling interests are as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 EBITDA including noncontrolling interests by segment: Motorparts $ 67 $ (52) $ 169 $ (92) Performance Solutions 32 (63) 75 (737) Clean Air 143 17 292 116 Powertrain 94 (69) 209 (42) Total reportable segments 336 (167) 745 (755) Corporate (64) (49) (114) (135) Depreciation and amortization (145) (159) (300) (330) Earnings (loss) before interest expense, income taxes, and noncontrolling interests 127 (375) 331 (1,220) Interest expense (69) (66) (139) (141) Income tax (expense) benefit (41) 101 (88) 195 Net income (loss) $ 17 $ (340) $ 104 $ (1,166) Disaggregated Revenue Original Equipment Value-Added Sales OE revenue is generated from providing OE manufacturers and servicers with products for automotive, heavy duty, and industrial applications. Supply relationships typically extend over the life of the related vehicle, subject to interim design and technical specification revisions, and do not require the customer to purchase a minimum quantity. Substrate/Passthrough Sales Generally, in connection with the sale of exhaust systems to certain OE manufacturers, the Company purchases catalytic converters and diesel particulate filters or components thereof including precious metals (“substrates”) on behalf of its customers which are used in the assembled system. These substrates are included in inventory and are “passed through” to the customer at cost, plus a small margin. Since the Company takes title to the substrate inventory and has responsibility for both the delivery and quality of the finished product including the substrates, the revenues and related expenses are recorded at gross amounts. Aftermarket Aftermarket revenue is generated from providing products for the global vehicle aftermarket to a wide range of warehouse distributors, retail parts stores, and mass merchants that distribute these products to customers ranging from professional service providers to “do-it-yourself” consumers. Revenue from contracts with customers is disaggregated by customer type and geography, as it depicts the nature and amount of the Company’s revenue that is aligned with the Company’s key growth strategies. In the following tables, revenue is disaggregated accordingly: Reportable Segments By Customer Type Motorparts Performance Solutions Clean Air Powertrain Total Three Months Ended June 30, 2021 OE - Substrate $ — $ — $ 1,081 $ — $ 1,081 OE - Value add — 697 943 1,050 2,690 Aftermarket 794 18 — — 812 Total $ 794 $ 715 $ 2,024 $ 1,050 $ 4,583 Three Months Ended June 30, 2020 OE - Substrate $ — $ — $ 623 $ — $ 623 OE - Value add — 368 517 560 1,445 Aftermarket 559 10 — — 569 Total $ 559 $ 378 $ 1,140 $ 560 $ 2,637 Six Months Ended June 30, 2021 OE - Substrate $ — $ — $ 2,169 $ — $ 2,169 OE - Value add — 1,465 1,979 2,151 5,595 Aftermarket 1,513 37 — — 1,550 Total $ 1,513 $ 1,502 $ 4,148 $ 2,151 $ 9,314 Six Months Ended June 30, 2020 OE - Substrate $ — $ — $ 1,323 $ — $ 1,323 OE - Value add — 1,022 1,362 1,476 3,860 Aftermarket 1,265 25 — — 1,290 Total $ 1,265 $ 1,047 $ 2,685 $ 1,476 $ 6,473 Reportable Segments By Geography Motorparts Performance Solutions Clean Air Powertrain Total Three Months Ended June 30, 2021 North America $ 501 $ 223 $ 812 $ 316 $ 1,852 Europe, Middle East, Africa and South America 238 324 639 548 1,749 Asia Pacific 55 168 573 186 982 Total $ 794 $ 715 $ 2,024 $ 1,050 $ 4,583 Three Months Ended June 30, 2020 North America $ 389 $ 91 $ 335 $ 158 $ 973 Europe, Middle East, Africa and South America 135 170 248 254 807 Asia Pacific 35 117 557 148 857 Total $ 559 $ 378 $ 1,140 $ 560 $ 2,637 Six Months Ended June 30, 2021 North America $ 955 $ 463 $ 1,663 $ 644 $ 3,725 Europe, Middle East, Africa and South America 450 679 1,321 1,111 3,561 Asia Pacific 108 360 1,164 396 2,028 Total $ 1,513 $ 1,502 $ 4,148 $ 2,151 $ 9,314 Six Months Ended June 30, 2020 North America $ 865 $ 319 $ 1,039 $ 472 $ 2,695 Europe, Middle East, Africa and South America 332 489 813 724 2,358 Asia Pacific 68 239 833 280 1,420 Total $ 1,265 $ 1,047 $ 2,685 $ 1,476 $ 6,473

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	16. Related Party Transactions The following tables summarize the net sales, purchases, and royalty and other income (expense) to and from related parties for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, 2021 2020 Net Sales Purchases Royalty and Other Net Sales Purchases Royalty and Other Otomotiv A.S. $ 11 $ 67 $ — $ 5 $ 17 $ 2 Anqing TP Goetze $ 1 $ 28 $ 2 $ 3 $ 18 $ 1 Other nonconsolidated affiliates $ 8 $ 13 $ 1 $ 4 $ 5 $ — Icahn Automotive Group LLC $ 40 $ — $ — $ 32 $ — $ 1 PSC Metals, Inc. $ — $ — $ — $ 1 $ — $ — Six Months Ended June 30, 2021 2020 Net Sales Purchases Royalty and Other Net Sales Purchases Royalty and Other Otomotiv A.S. $ 21 $ 143 $ 3 $ 17 $ 76 $ 6 Anqing TP Goetze $ 3 $ 55 $ 3 $ 9 $ 31 $ 1 Other nonconsolidated affiliates $ 16 $ 25 $ 1 $ 11 $ 18 $ — Icahn Automotive Group LLC $ 71 $ — $ 1 $ 65 $ — $ 2 PSC Metals, Inc. $ — $ — $ 1 $ 1 $ — $ — The following table is a summary of amounts due to and from the Company's related parties at June 30, 2021 and December 31, 2020: June 30, 2021 December 31, 2020 Receivables Payables and Accruals Receivables Payables and Accruals Otomotiv A.S. $ 6 $ 33 $ 10 $ 49 Anqing TP Goetze $ 4 $ 35 $ 4 $ 30 Other nonconsolidated affiliates $ 3 $ 6 $ 3 $ 7 Icahn Automotive Group LLC $ 47 $ 4 $ 47 $ 9 Refer to Note 7, “Investment in Nonconsolidated Affiliates”, for further information for companies within the tables above that represent equity method investments. Amounts presented as Icahn Automotive Group LLC represent the Company’s activities with IEH Auto Parts LLC and Pep Boys—Manny, Moe & Jack.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation — Interim Financial Statements Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations. These statements include all adjustments (consisting of normal recurring adjustments) management believes are necessary to fairly state the results of operations, comprehensive income, financial position, changes in shareholders’ equity, and cash flows. The Company’s management believes the disclosures are adequate to make the information presented not misleading when read in conjunction with the audited consolidated financial statements and the notes thereto included in its Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the Securities and Exchange Commission on February 24, 2021 (the “2020 Form 10-K”). Operating results for the three and six months ended June 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. There are many uncertainties related to the COVID-19 global pandemic that could negatively affect the Company's results of operations, financial position, and cash flows.
Reclassifications	ReclassificationsCertain amounts in the prior period have been aggregated or disaggregated to conform to current year presentation, as described above for the change in operating segments.
Redeemable noncontrolling interests	Redeemable noncontrolling interestsThe Company has noncontrolling interests with redemption features. These redemption features could require the Company to make an offer to purchase the noncontrolling interests in the event of a change in control of Tenneco Inc. or certain of its subsidiaries or the passage of time.
Earnings (loss) Per Share	Earnings (loss) per shareBasic earnings (loss) per share is calculated by dividing net earnings (loss) by the weighted average shares outstanding during the period. Diluted earnings (loss) per share reflects the weighted average effect of all potentially dilutive securities from the date of issuance.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Redeemable Noncontrolling Interests	The following is a rollforward of activities in the Company’s redeemable noncontrolling interests: Six Months Ended June 30, 2021 2020 Balance at beginning of period $ 78 $ 196 Net income (loss) attributable to redeemable noncontrolling interests 13 5 Other comprehensive income (loss) (1) (4) Noncontrolling interest tender offer redemption — (46) Redemption value measurement adjustment 18 10 Reclassification of noncontrolling interest to permanent equity — (82) Balance at end of period $ 108 $ 79
Schedule of Earnings Per Share, Basic and Diluted	Actual weighted average shares outstanding used in calculating earnings (loss) per share were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Weighted average shares of common stock outstanding 82,251,559 81,350,773 82,102,310 81,259,667 Effect of dilutive securities: PSUs and RSUs — — 1,020,044 — Dilutive shares outstanding 82,251,559 81,350,773 83,122,354 81,259,667

Restructuring Charges, Net an_2

Restructuring Charges, Net and Asset Impairments (Tables)	6 Months Ended
	Jun. 30, 2021
Restructuring and Related Activities [Abstract]
Schedule of Restructuring	For the three and six months ended June 30, 2021 and 2020, restructuring charges, net and asset impairments by segment are as follows: Three Months Ended June 30, 2021 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 5 $ 8 $ 2 $ 8 $ 1 $ 24 Asset impairments related to restructuring actions 1 — — — — 1 Other non-restructuring asset impairments — — — — 2 2 Total asset impairment charges 1 — — — 2 3 Total restructuring charges, net and asset impairments $ 6 $ 8 $ 2 $ 8 $ 3 $ 27 Three Months Ended June 30, 2020 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 15 $ 18 $ 22 $ 36 $ 1 $ 92 Asset impairments related to restructuring actions 25 — — 3 — 28 Other non-restructuring asset impairments — — — — 1 1 Impairment of assets held for sale (1) — — 1 — — Total asset impairment charges 24 — — 4 1 29 Total restructuring charges, net and asset impairments $ 39 $ 18 $ 22 $ 40 $ 2 $ 121 Six Months Ended June 30, 2021 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 7 $ 12 $ 11 $ 18 $ 1 $ 49 Asset impairments related to restructuring actions 1 — — — — 1 Other non-restructuring asset impairments — — — — 2 2 Total asset impairment charges 1 — — — 2 3 Total restructuring charges, net and asset impairments $ 8 $ 12 $ 11 $ 18 $ 3 $ 52 Six Months Ended June 30, 2020 Motorparts Performance Solutions Clean Air Powertrain Corporate Total Severance and other charges, net $ 17 $ 24 $ 22 $ 37 $ 5 $ 105 Asset impairments related to restructuring actions 25 — — 3 — 28 Other non-restructuring asset impairments — 455 — — 17 472 Impairment of assets held for sale (1) — — 1 — — Total asset impairment charges 24 455 — 4 17 500 Total restructuring charges, net and asset impairments $ 41 $ 479 $ 22 $ 41 $ 22 $ 605 The following table provides a summary of the Company’s restructuring liabilities and related activity for each type of exit costs: Six Months Ended June 30, 2021 Six Months Ended June 30, 2020 Employee Costs Facility Closure and Other Costs Total Employee Costs Facility Closure and Other Costs Total Balance at beginning of period $ 99 $ 1 $ 100 $ 97 $ 4 $ 101 Provisions 31 3 34 10 5 15 Revisions to estimates (9) — (9) (2) — (2) Payments (21) (4) (25) (23) (7) (30) Foreign currency (1) — (1) (1) — (1) Balance at March 31 99 — 99 81 2 83 Provisions 30 2 32 90 6 96 Revisions to estimates (8) — (8) (4) — (4) Payments (22) (2) (24) (31) (4) (35) Balance at end of period $ 99 $ — $ 99 $ 136 $ 4 $ 140

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Schedule of Inventory	At June 30, 2021 and December 31, 2020, inventory by major classification was as follows: June 30, December 31, Finished goods $ 797 $ 758 Work in process 551 449 Raw materials 479 441 Materials and supplies 93 95 Total inventories $ 1,920 $ 1,743

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	At June 30, 2021 and December 31, 2020, goodwill consists of the following: Six Months Ended June 30, 2021 Motorparts Performance Solutions Clean Air Powertrain Total Gross carrying amount at December 31, 2020 $ 623 $ 549 $ 23 $ 59 $ 1,254 Foreign exchange — (3) — — (3) Gross carrying amount at March 31, 2021 623 546 23 59 1,251 Foreign exchange — 2 — — 2 Gross carrying amount at June 30, 2021 623 548 23 59 1,253 Accumulated impairment loss at December 31, 2020 (310) (377) — (59) (746) Foreign exchange — 3 — — 3 Accumulated impairment loss at March 31, 2021 (310) (374) — (59) (743) Foreign exchange — (2) — — (2) Accumulated impairment loss at June 30, 2021 (310) (376) — (59) (745) Net carrying value at June 30, 2021 $ 313 $ 172 $ 23 $ — $ 508 The following table shows a summary of the number of reporting units with a net carrying value of goodwill in each segment at June 30, 2021 and whether or not the reporting unit’s fair value exceeds its carrying value by more or less than 25% based on each respective reporting units most recent goodwill impairment analysis: Segments Motorparts Performance Solutions Clean Air Number of reporting units with goodwill 1 2 3 Number of reporting units where fair value exceeds carrying value: Greater than 25% 1 1 3 Less than 25% — 1 — Goodwill for reporting units where fair value exceeds carrying value: Greater than 25% $ 313 $ 7 $ 23 Less than 25% — 165 — $ 313 $ 172 $ 23
Schedule of Intangible Assets and Goodwill	Impairment charges for goodwill and intangible assets recognized by segment during the six months ended June 30, 2020 consist of the following: Six Months Ended June 30, 2020 Motorparts Performance Solutions Powertrain Total Goodwill impairment charges $ 70 $ 156 $ 41 $ 267 Trade names and trademarks intangible asset impairment charges 40 11 — 51 Definite-lived intangible asset impairment charges — 65 — 65 $ 110 $ 232 $ 41 $ 383
Schedule of Indefinite-Lived Intangible Assets	At June 30, 2021 and December 31, 2020, the Company’s intangible assets consist of the following: June 30, 2021 December 31, 2020 Useful Lives Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value Definite-lived intangible assets: Customer relationships and platforms 10 years $ 994 $ (328) $ 666 $ 995 $ (282) $ 713 Customer contracts 10 years 8 (6) 2 8 (6) 2 Patents 10 to 17 years 1 (1) — 1 (1) — Technology rights 10 to 30 years 137 (56) 81 139 (51) 88 Packaged kits know-how 10 years 54 (15) 39 54 (12) 42 Catalogs 10 years 47 (13) 34 47 (11) 36 Licensing agreements 3 to 5 years 65 (42) 23 66 (35) 31 Land use rights 28 to 46 years 50 (5) 45 49 (4) 45 $ 1,356 $ (466) 890 $ 1,359 $ (402) 957 Indefinite-lived intangible assets: Trade names and trademarks 235 237 Total $ 1,125 $ 1,194
Schedule of Finite-Lived Intangible Assets	At June 30, 2021 and December 31, 2020, the Company’s intangible assets consist of the following: June 30, 2021 December 31, 2020 Useful Lives Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value Definite-lived intangible assets: Customer relationships and platforms 10 years $ 994 $ (328) $ 666 $ 995 $ (282) $ 713 Customer contracts 10 years 8 (6) 2 8 (6) 2 Patents 10 to 17 years 1 (1) — 1 (1) — Technology rights 10 to 30 years 137 (56) 81 139 (51) 88 Packaged kits know-how 10 years 54 (15) 39 54 (12) 42 Catalogs 10 years 47 (13) 34 47 (11) 36 Licensing agreements 3 to 5 years 65 (42) 23 66 (35) 31 Land use rights 28 to 46 years 50 (5) 45 49 (4) 45 $ 1,356 $ (466) 890 $ 1,359 $ (402) 957 Indefinite-lived intangible assets: Trade names and trademarks 235 237 Total $ 1,125 $ 1,194
Finite-lived Intangible Assets Amortization Expense	The amortization expense associated with definite-lived intangible assets is as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Amortization expense $ 33 $ 32 $ 65 $ 66 The expected future amortization expense for the Company’s definite-lived intangible assets is as follows: 2021 2022 2023 2024 2025 2026 and thereafter Total Expected amortization expense $ 64 $ 125 $ 122 $ 114 $ 114 $ 351 $ 890

Investment in Nonconsolidated_2

Investment in Nonconsolidated Affiliates (Tables)	6 Months Ended
	Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	The following tables present summarized aggregated financial information of the Company’s nonconsolidated affiliates for the three and six months ended June 30, 2021 and 2020. The amounts represent 100% of the interest in the nonconsolidated affiliates and not the Company’s proportionate share: Three Months Ended June 30, 2021 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 94 $ 52 $ 136 $ 282 Gross profit $ 29 $ 14 $ 29 $ 72 Income from continuing operations $ 25 $ 14 $ 15 $ 54 Net income $ 17 $ 13 $ 14 $ 44 Three Months Ended June 30, 2020 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 36 $ 11 $ 41 $ 88 Gross profit $ 6 $ 5 $ 6 $ 17 Income from continuing operations $ 4 $ 4 $ 2 $ 10 Net income $ 5 $ 4 $ 2 $ 11 Six Months Ended June 30, 2021 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 196 $ 101 $ 248 $ 545 Gross profit $ 64 $ 28 $ 51 $ 143 Income from continuing operations $ 57 $ 28 $ 30 $ 115 Net income $ 51 $ 25 $ 24 $ 100 Six Months Ended June 30, 2020 Statements of Income Otomotiv A.S. Anqing TP Goetze Other Total Sales $ 120 $ 41 $ 146 $ 307 Gross profit $ 32 $ 11 $ 26 $ 69 Income from continuing operations $ 27 $ 11 $ 11 $ 49 Net income $ 23 $ 10 $ 8 $ 41

Financial Instruments and Fai_2

Financial Instruments and Fair Value (Tables)	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summarization for Foreign Currency Forward Purchase and Sale Contracts	The following table summarizes by position the notional amounts for foreign currency forward contracts at June 30, 2021, all of which mature in the next twelve months: Notional Amount Long positions $ 277 Short positions $ (282)
Cash-Settled Awards	As of June 30, 2021 and December 31, 2020, the share equivalents outstanding related to cash-settled share-based awards are as follows: June 30, December 31, Restricted Stock Units (RSUs) 1,758,443 1,878,220 Performance Share Units (PSUs) 2,990,493 — 4,748,936 1,878,220 Deferred compensation arrangements 1,584,039 1,125,605 June 30, December 31, RSUs 1,758,443 1,878,220 PSUs 2,990,493 — 4,748,936 1,878,220
Carrying and Estimated Fair Value	The estimated fair value of these financial instruments at June 30, 2021 and December 31, 2020 is as follows: Balance sheet classification June 30, December 31, Other financial instruments in asset positions Prepayments and other current assets $ 29 $ 1 Other financial instruments in liability positions (a) Accrued expenses and other current liabilities $ 3 $ —
Schedule of Derivative Instruments	The following table represents the amount of gain (loss) recognized in accumulated other comprehensive income (loss) before any reclassifications into net income (loss) for derivative and non-derivative instruments designated as hedges for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Commodity price hedge contracts designated as cash flow hedges $ (1) $ 5 $ 1 $ 2 Foreign currency borrowings designated as a net investment hedge $ — $ (16) $ 11 $ (2)
Carrying and Estimated Fair Value of Debt Instruments	The estimated fair value of the Company’s outstanding debt is as follows: June 30, 2021 December 31, 2020 Fair value Carrying Fair Carrying Fair Long-term debt (including current maturities): Term loans and senior notes Level 2 $ 5,061 $ 5,213 $ 5,153 $ 5,138

Debt and Other Financing Arra_2

Debt and Other Financing Arrangements (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Summary of Long-term Debt Obligations	A summary of the Company’s long-term debt obligations at June 30, 2021 and December 31, 2020 is set forth in the following table: June 30, 2021 December 31, 2020 Principal Carrying Amount (a) Principal Carrying Amount (a) Credit Facilities Revolver Borrowings Due 2023 $ — $ — $ — $ — Term Loans LIBOR plus 2.00% Term Loan A due 2019 through 2023 (b) 1,466 1,458 1,530 1,520 LIBOR plus 3.00% Term Loan B due 2019 through 2025 1,658 1,609 1,666 1,612 Senior Unsecured Notes $225 million of 5.375% Senior Notes due 2024 225 223 225 223 $500 million of 5.000% Senior Notes due 2026 500 495 500 494 Senior Secured Notes €300 million of Euribor plus 4.875% Euro Floating Rate Notes due 2024 (c) — — 366 370 €350 million of 5.000% Euro Fixed Rate Notes due 2024 (c) — — 428 445 $500 million of 7.875% Senior Secured Notes due 2029 500 490 500 489 $800 million of 5.125% Senior Secured Notes due 2029 (d) 800 786 — — Other debt, primarily foreign instruments 28 27 24 23 5,088 5,176 Less - maturities classified as current 7 5 Total long-term debt $ 5,081 $ 5,171 (a) Carrying amount is net of unamortized debt issuance costs and debt discounts or premiums. Total unamortized debt issuance costs were $87 million and $82 million at June 30, 2021 and December 31, 2020. Total unamortized debt (premium) discount, net was $1 million and $(20) million at June 30, 2021 and December 31, 2020. (b) The interest rate on Term Loan A at December 31, 2020 was LIBOR plus 2.50%. (c) The Company satisfied and discharged all of its 4.875% Euro Floating Rate Notes due 2024 and 5.000% Euro Fixed Rate Notes due 2024 on March 17, 2021.
Schedule of Short-term Debt	The Company’s short-term debt at June 30, 2021 and December 31, 2020 consists of the following: June 30, December 31, Maturities classified as current $ 7 $ 5 Short-term borrowings (a) 119 157 Total short-term debt $ 126 $ 162 (a) Includes borrowings under both committed credit facilities and uncommitted lines of credit and similar arrangements.
Financing Arrangements	Financing Arrangements The table below shows the Company’s borrowing capacity on committed credit facilities at June 30, 2021 (in billions): June 30, 2021 Term Available (b) Tenneco Inc. revolving credit facility (a) 2023 $ 1.5 Tenneco Inc. Term Loan A 2023 — Tenneco Inc. Term Loan B 2025 — Subsidiaries’ credit agreements 2022 - 2028 — $ 1.5 (a) The Company is required to pay commitment fees under the revolving credit facility on the unused portion of the total commitment. (b) At June 30, 2021, the Company had $28 million of outstanding letters of credit under the revolving credit facility, which reduces the available borrowings under the revolving credit facility. The Company also had $77 million of outstanding letters of credit under uncommitted facilities at June 30, 2021.

Pension Plans, Postretirement_2

Pension Plans, Postretirement and Other Employee Benefits (Tables)	6 Months Ended
	Jun. 30, 2021
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Cost	Components of net periodic benefit costs (credits) for the three and six months ended June 30, 2021 and 2020 are as follows: Three Months Ended June 30, Pension Benefits Other Postretirement Benefits 2021 2020 U.S. Non-U.S. U.S. Non-U.S. 2021 2020 Service cost $ 1 $ 6 $ 1 $ 6 $ — $ — Interest cost 7 5 10 5 2 3 Expected return on plan assets (16) (4) (16) (4) — — Net amortization: Actuarial loss 3 3 1 2 — — Prior service cost (credit) — — — — (3) (2) Net pension and postretirement costs (credits) $ (5) $ 10 $ (4) $ 9 $ (1) $ 1 Six Months Ended June 30, Pension Benefits Other Postretirement Benefits 2021 2020 U.S. Non-U.S. U.S. Non-U.S. 2021 2020 Service cost $ 1 $ 13 $ 1 $ 12 $ — $ — Interest cost 15 9 20 9 3 5 Expected return on plan assets (32) (8) (32) (8) — — Net amortization: Actuarial loss 6 5 3 4 1 1 Prior service cost (credit) — — — — (5) (4) Net pension and postretirement costs (credits) $ (10) $ 19 $ (8) $ 17 $ (1) $ 2

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Environmental Loss Contingencies	The Company’s estimated share of environmental remediation costs for all these sites is recognized in the condensed consolidated balance sheets at June 30, 2021 and December 31, 2020 as follows: June 30, December 31, Accrued expenses and other current liabilities $ 9 $ 8 Deferred credits and other liabilities 24 26 $ 33 $ 34
Schedule of Asset Retirement Obligations	The Company’s ARO liabilities at June 30, 2021 and December 31, 2020 are as follows: June 30, December 31, Accrued expenses and other current liabilities $ 2 $ 2 Deferred credits and other liabilities 12 12 $ 14 $ 14
Warranty Accrual Table	The following represents the changes in the Company’s warranty accrual accounts for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Balance at beginning of period $ 67 $ 51 $ 62 $ 54 Accruals and revisions to estimates 18 1 32 4 Settlements (14) (1) (22) (7) Foreign currency 1 (1) — (1) Balance at end of period $ 72 $ 50 $ 72 $ 50

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-based Compensation	Total share-based compensation expense for the three and six months ended June 30, 2021 and 2020 is as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Cash-settled share-based compensation expense $ 12 $ 1 $ 16 $ 1 Share-settled share-based compensation expense 4 7 9 9 $ 16 $ 8 $ 25 $ 10
Cash-Settled Awards	As of June 30, 2021 and December 31, 2020, the share equivalents outstanding related to cash-settled share-based awards are as follows: June 30, December 31, Restricted Stock Units (RSUs) 1,758,443 1,878,220 Performance Share Units (PSUs) 2,990,493 — 4,748,936 1,878,220 Deferred compensation arrangements 1,584,039 1,125,605 June 30, December 31, RSUs 1,758,443 1,878,220 PSUs 2,990,493 — 4,748,936 1,878,220
Unvested Restricted Shares	The following table reflects the status of all share-settled RSUs and PSUs for the six months ended June 30, 2021: Share-Settled RSUs Share-Settled PSUs Units Weighted Avg. Units Weighted Avg. Nonvested balance at beginning of period 2,118,605 $ 26.00 527,105 $ 36.37 Granted 2,078,409 10.70 — — Vested (635,023) 34.09 (57,794) 49.18 Forfeited (171,384) 19.78 (134,361) 46.61 Nonvested balance at end of period 3,390,607 $ 14.89 334,950 $ 24.60

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Schedule of Stock by Class	Total common stock outstanding and changes in common stock issued are as follows: Class A Common Stock Class B Common Stock Six Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Shares issued at beginning of period 75,714,163 71,727,061 20,308,454 23,793,669 Issued pursuant to benefit plans 790,467 458,855 — — Withheld for taxes pursuant to benefit plans (249,015) (124,440) — — Class B common stock converted to Class A common stock 20,308,454 3,485,215 (20,308,454) (3,485,215) Shares issued at end of period 96,564,069 75,546,691 — 20,308,454 Treasury stock 14,592,888 14,592,888 — — Total shares outstanding 81,971,181 60,953,803 — 20,308,454
Schedule of AOCI	The following represents the Company’s changes in accumulated other comprehensive income (loss) by component, net of tax for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Foreign currency translation adjustments: Balance at beginning of period $ (441) $ (568) $ (395) $ (369) Other comprehensive income (loss) before reclassifications 58 34 12 (165) Reclassification from other comprehensive income (loss) — — — — Other comprehensive income (loss) 58 34 12 (165) Income tax benefit (provision) — 1 — 1 Balance at end of period (383) (533) (383) (533) Defined benefit plans: Balance at beginning of period (350) (338) (353) (342) Other comprehensive income (loss) before reclassifications — — — — Reclassification from other comprehensive income (loss) 3 1 7 4 Other comprehensive income (loss) 3 1 7 4 Income tax benefit (provision) — (6) (1) (5) Balance at end of period (347) (343) (347) (343) Cash flow hedges: Balance at beginning of period 2 (2) 4 — Other comprehensive income (loss) before reclassifications (1) 5 1 2 Reclassification from other comprehensive income (loss) — — (4) — Other comprehensive income (loss) (1) 5 (3) 2 Income tax benefit (provision) — (1) — — Balance at end of period 1 2 1 2 Accumulated other comprehensive loss at end of period $ (729) $ (874) $ (729) $ (874) Other comprehensive income (loss) attributable to noncontrolling interests $ 4 $ 7 $ (2) $ (13)

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Segment Information	Segment results for the three and six months ended June 30, 2021 and 2020 are as follows: Reportable Segments Motorparts Performance Solutions Clean Air Powertrain Total Reclass & Elims Total For the Three Months Ended June 30, 2021 Revenues from external customers $ 794 $ 715 $ 2,024 $ 1,050 $ 4,583 $ — $ 4,583 Intersegment revenues $ 10 $ 23 $ 4 $ 47 $ 84 $ (84) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 4 $ — $ — $ 11 $ 15 $ — $ 15 For the Three Months Ended June 30, 2020 Revenues from external customers $ 559 $ 378 $ 1,140 $ 560 $ 2,637 $ — $ 2,637 Intersegment revenues $ 6 $ 21 $ 3 $ 21 $ 51 $ (51) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 1 $ 1 $ — $ 2 $ 4 $ — $ 4 For the Six Months Ended June 30, 2021 Revenues from external customers $ 1,513 $ 1,502 $ 4,148 $ 2,151 $ 9,314 $ — $ 9,314 Intersegment revenues $ 19 $ 49 $ 10 $ 94 $ 172 $ (172) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 7 $ 1 $ — $ 29 $ 37 $ — $ 37 For the Six Months Ended June 30, 2020 Revenues from external customers $ 1,265 $ 1,047 $ 2,685 $ 1,476 $ 6,473 $ — $ 6,473 Intersegment revenues $ 15 $ 50 $ 9 $ 59 $ 133 $ (133) $ — Equity in earnings of nonconsolidated affiliates, net of tax $ 3 $ 1 $ — $ 13 $ 17 $ — $ 17 Segment EBITDA including noncontrolling interests and the reconciliation to earnings (loss) before interest expense, income taxes, and noncontrolling interests are as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 EBITDA including noncontrolling interests by segment: Motorparts $ 67 $ (52) $ 169 $ (92) Performance Solutions 32 (63) 75 (737) Clean Air 143 17 292 116 Powertrain 94 (69) 209 (42) Total reportable segments 336 (167) 745 (755) Corporate (64) (49) (114) (135) Depreciation and amortization (145) (159) (300) (330) Earnings (loss) before interest expense, income taxes, and noncontrolling interests 127 (375) 331 (1,220) Interest expense (69) (66) (139) (141) Income tax (expense) benefit (41) 101 (88) 195 Net income (loss) $ 17 $ (340) $ 104 $ (1,166)
Disaggregation of Revenue	Revenue from contracts with customers is disaggregated by customer type and geography, as it depicts the nature and amount of the Company’s revenue that is aligned with the Company’s key growth strategies. In the following tables, revenue is disaggregated accordingly: Reportable Segments By Customer Type Motorparts Performance Solutions Clean Air Powertrain Total Three Months Ended June 30, 2021 OE - Substrate $ — $ — $ 1,081 $ — $ 1,081 OE - Value add — 697 943 1,050 2,690 Aftermarket 794 18 — — 812 Total $ 794 $ 715 $ 2,024 $ 1,050 $ 4,583 Three Months Ended June 30, 2020 OE - Substrate $ — $ — $ 623 $ — $ 623 OE - Value add — 368 517 560 1,445 Aftermarket 559 10 — — 569 Total $ 559 $ 378 $ 1,140 $ 560 $ 2,637 Six Months Ended June 30, 2021 OE - Substrate $ — $ — $ 2,169 $ — $ 2,169 OE - Value add — 1,465 1,979 2,151 5,595 Aftermarket 1,513 37 — — 1,550 Total $ 1,513 $ 1,502 $ 4,148 $ 2,151 $ 9,314 Six Months Ended June 30, 2020 OE - Substrate $ — $ — $ 1,323 $ — $ 1,323 OE - Value add — 1,022 1,362 1,476 3,860 Aftermarket 1,265 25 — — 1,290 Total $ 1,265 $ 1,047 $ 2,685 $ 1,476 $ 6,473 Reportable Segments By Geography Motorparts Performance Solutions Clean Air Powertrain Total Three Months Ended June 30, 2021 North America $ 501 $ 223 $ 812 $ 316 $ 1,852 Europe, Middle East, Africa and South America 238 324 639 548 1,749 Asia Pacific 55 168 573 186 982 Total $ 794 $ 715 $ 2,024 $ 1,050 $ 4,583 Three Months Ended June 30, 2020 North America $ 389 $ 91 $ 335 $ 158 $ 973 Europe, Middle East, Africa and South America 135 170 248 254 807 Asia Pacific 35 117 557 148 857 Total $ 559 $ 378 $ 1,140 $ 560 $ 2,637 Six Months Ended June 30, 2021 North America $ 955 $ 463 $ 1,663 $ 644 $ 3,725 Europe, Middle East, Africa and South America 450 679 1,321 1,111 3,561 Asia Pacific 108 360 1,164 396 2,028 Total $ 1,513 $ 1,502 $ 4,148 $ 2,151 $ 9,314 Six Months Ended June 30, 2020 North America $ 865 $ 319 $ 1,039 $ 472 $ 2,695 Europe, Middle East, Africa and South America 332 489 813 724 2,358 Asia Pacific 68 239 833 280 1,420 Total $ 1,265 $ 1,047 $ 2,685 $ 1,476 $ 6,473

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following tables summarize the net sales, purchases, and royalty and other income (expense) to and from related parties for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, 2021 2020 Net Sales Purchases Royalty and Other Net Sales Purchases Royalty and Other Otomotiv A.S. $ 11 $ 67 $ — $ 5 $ 17 $ 2 Anqing TP Goetze $ 1 $ 28 $ 2 $ 3 $ 18 $ 1 Other nonconsolidated affiliates $ 8 $ 13 $ 1 $ 4 $ 5 $ — Icahn Automotive Group LLC $ 40 $ — $ — $ 32 $ — $ 1 PSC Metals, Inc. $ — $ — $ — $ 1 $ — $ — Six Months Ended June 30, 2021 2020 Net Sales Purchases Royalty and Other Net Sales Purchases Royalty and Other Otomotiv A.S. $ 21 $ 143 $ 3 $ 17 $ 76 $ 6 Anqing TP Goetze $ 3 $ 55 $ 3 $ 9 $ 31 $ 1 Other nonconsolidated affiliates $ 16 $ 25 $ 1 $ 11 $ 18 $ — Icahn Automotive Group LLC $ 71 $ — $ 1 $ 65 $ — $ 2 PSC Metals, Inc. $ — $ — $ 1 $ 1 $ — $ — The following table is a summary of amounts due to and from the Company's related parties at June 30, 2021 and December 31, 2020: June 30, 2021 December 31, 2020 Receivables Payables and Accruals Receivables Payables and Accruals Otomotiv A.S. $ 6 $ 33 $ 10 $ 49 Anqing TP Goetze $ 4 $ 35 $ 4 $ 30 Other nonconsolidated affiliates $ 3 $ 6 $ 3 $ 7 Icahn Automotive Group LLC $ 47 $ 4 $ 47 $ 9

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest, not currently redeemable	$ 58		$ 45
Redeemable noncontrolling interest, redemption value	50		$ 33
Redemption value measurement adjustment	18	$ 10
Reclassification of noncontrolling interest to permanent equity	$ 0	$ (82)
Öhlins Intressenter AB | K Öhlin Holding AB
Redeemable Noncontrolling Interest [Line Items]
Ownership percentage	9.50%

Basis of Presentation - Redeema

Basis of Presentation - Redeemable Non Controlling Interest (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Redeemable Noncontrolling Interest [Roll Forward]
Balance at beginning of period	$ 78	$ 196
Net income (loss) attributable to redeemable noncontrolling interests	13	5
Other comprehensive income (loss)	(1)	(4)
Noncontrolling interest tender offer redemption	0	(46)
Redemption value measurement adjustment	18	10
Reclassification of noncontrolling interest to permanent equity	0	(82)
Balance at end of period	$ 108	$ 79

Basis of Presentation - Earning

Basis of Presentation - Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted average shares of common stock outstanding (in shares)	82,251,559	81,350,773	82,102,310	81,259,667
Dilutive shares outstanding (in shares)	82,251,559	81,350,773	83,122,354	81,259,667
Anti-dilutive shares (in shares)	3,459,155	3,133,035	2,032,790	2,508,565
PSUs and RSUs
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities (in shares)	0	0	1,020,044	0

Acquisitions and Divestitures -

Acquisitions and Divestitures - Assets Held For Sale (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property, plant and equipment	$ 11	$ 15

Restructuring Charges, Net an_3

Restructuring Charges, Net and Asset Impairments - Incurred Costs (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	$ 24		$ 92		$ 49	$ 105
Asset impairments related to restructuring actions	1		28		1	28
Other non-restructuring asset impairments	2		1		2	472
Impairment of assets held for sale			0			0
Total asset impairment charges	3		29		3	500
Total restructuring charges, net and asset impairments	27		121		52	605
Restructuring charges	32	$ 34	96	$ 15
Motorparts
Restructuring Cost and Reserve [Line Items]
Total asset impairment charges	1		16		1	16
Total Reportable Segments | Motorparts
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	5		15		7	17
Asset impairments related to restructuring actions	1		25		1	25
Other non-restructuring asset impairments	0		0		0	0
Impairment of assets held for sale			(1)			(1)
Total asset impairment charges	1		24		1	24
Total restructuring charges, net and asset impairments	6		39		8	41
Total Reportable Segments | Performance Solutions
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	8		18		12	24
Asset impairments related to restructuring actions	0		0		0	0
Other non-restructuring asset impairments	0		0		0	455
Impairment of assets held for sale			0			0
Total asset impairment charges	0		0		0	455
Total restructuring charges, net and asset impairments	8		18		12	479
Total Reportable Segments | Clean Air
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	2		22		11	22
Asset impairments related to restructuring actions	0		0		0	0
Other non-restructuring asset impairments	0		0		0	0
Impairment of assets held for sale			0			0
Total asset impairment charges	0		0		0	0
Total restructuring charges, net and asset impairments	2		22		11	22
Total Reportable Segments | Powertrain
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	8		36		18	37
Asset impairments related to restructuring actions	0		3		0	3
Other non-restructuring asset impairments	0		0		0	0
Impairment of assets held for sale			1			1
Total asset impairment charges	0		4		0	4
Total restructuring charges, net and asset impairments	8		40		18	41
Corporate
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	1		1		1	5
Asset impairments related to restructuring actions	0		0		0	0
Other non-restructuring asset impairments	2		1		2	17
Impairment of assets held for sale			0			0
Total asset impairment charges	2		1		2	17
Total restructuring charges, net and asset impairments	$ 3		$ 2		$ 3	$ 22

Restructuring Charges, Net an_4

Restructuring Charges, Net and Asset Impairments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 32	$ 34	$ 96	$ 15
Revisions to estimates	(8)	(9)	(4)	(2)
Asset impairments related to restructuring actions	1		28		$ 1	$ 28
Total asset impairment charges	3		29		3	500
Other non-restructuring asset impairments	2		1		2	472
Corporate
Restructuring Cost and Reserve [Line Items]
Asset impairments related to restructuring actions	0		0		0	0
Total asset impairment charges	2		1		2	17
Impairment of property, plant and equipment						11
Operating lease impairment						6
Other non-restructuring asset impairments	2		1		2	17
Motorparts
Restructuring Cost and Reserve [Line Items]
Total asset impairment charges	1		16		1	16
Operating lease impairment			9			9
Motorparts | Operating Segments
Restructuring Cost and Reserve [Line Items]
Asset impairments related to restructuring actions	1		25		1	25
Total asset impairment charges	1		24		1	24
Impairment of property, plant and equipment	1		16		1	16
Operating lease impairment			9			9
Other non-restructuring asset impairments	0		0		0	0
Performance Solutions
Restructuring Cost and Reserve [Line Items]
Impairment of property, plant and equipment						455
Performance Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Asset impairments related to restructuring actions	0		0		0	0
Total asset impairment charges	0		0		0	455
Other non-restructuring asset impairments	0		0		0	455
Powertrain | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9				9
Powertrain | Operating Segments
Restructuring Cost and Reserve [Line Items]
Asset impairments related to restructuring actions	0		3		0	3
Total asset impairment charges	0		4		0	4
Other non-restructuring asset impairments	0		0		0	0
Employee Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	30	31	90	10
Revisions to estimates	(8)	(9)	(4)	(2)
Employee Costs | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring costs						4
Employee Costs | Motorparts
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1		4		1	4
Employee Costs | Powertrain
Restructuring Cost and Reserve [Line Items]
Restructuring charges					12
Facility Closure and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	3	6	5
Revisions to estimates	0	$ 0	0	$ 0
Other restructuring | Motorparts
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3				3
Other restructuring | Motorparts | North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1
Cost Reduction Programs | Motorparts | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges			4			6
Cost Reduction Programs | Performance Solutions | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	7		10		11	10
Cost Reduction Programs | Clean Air | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges			14			14
Cost Reduction Programs | Employee Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	15		44		15	44
Cost Reduction Programs | Employee Costs | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1				1
Cost Reduction Programs | Employee Costs | Clean Air | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2				17
Cost Reduction Programs | Employee Costs | Powertrain | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges			12			14
Cost Reduction Programs | Revisions to Estimates Cost | Motorparts | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1
Revisions to estimates			1		4
Cost Reduction Programs | Revisions to Estimates Cost | Motorparts | Europe And Asia Pacific
Restructuring Cost and Reserve [Line Items]
Revisions to estimates						1
Cost Reduction Programs | Revisions to Estimates Cost | Performance Solutions | North America
Restructuring Cost and Reserve [Line Items]
Revisions to estimates						1
Cost Reduction Programs | Revisions to Estimates Cost | Clean Air | Europe
Restructuring Cost and Reserve [Line Items]
Revisions to estimates			1			1
Cost Reduction Programs | Revisions to Estimates Cost | Powertrain | Europe
Restructuring Cost and Reserve [Line Items]
Revisions to estimates	3				4
Cost Reduction Programs | Other restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	32		51		32	51
Cost Reduction Programs | Other restructuring | Clean Air | Europe
Restructuring Cost and Reserve [Line Items]
Revisions to estimates	1				6
Plant Consolidations, Relocations And Closures | Motorparts | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	7				7
Plant Consolidations, Relocations And Closures | Motorparts | Europe And Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring charges			3			4
Plant Consolidations, Relocations And Closures | Performance Solutions | North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1		5		1	12
Plant Consolidations, Relocations And Closures | Clean Air | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1			1
Plant Consolidations, Relocations And Closures | Powertrain | Europe And North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges			16		9	16
Plant Consolidations, Relocations And Closures | Powertrain | Operating Segments
Restructuring Cost and Reserve [Line Items]
Asset impairments related to restructuring actions			3			3
Plant Consolidations, Relocations And Closures | Employee Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9		23		9	23
Plant Consolidations, Relocations And Closures | Employee Costs | Clean Air | North America And Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1				3
Plant Consolidations, Relocations And Closures | Revisions to Estimates Cost | Clean Air | Europe
Restructuring Cost and Reserve [Line Items]
Revisions to estimates			1			1
Plant Consolidations, Relocations And Closures | Revisions to Estimates Cost | Powertrain | Europe And North America
Restructuring Cost and Reserve [Line Items]
Revisions to estimates						1
Plant Consolidations, Relocations And Closures | Other restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	20		29		20	29
Project Accelerate | Motorparts
Restructuring Cost and Reserve [Line Items]
Restructuring charges			5			5
Project Accelerate | Performance Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring charges			3			3
Project Accelerate | Clean Air
Restructuring Cost and Reserve [Line Items]
Restructuring charges			9			9
Project Accelerate | Powertrain
Restructuring Cost and Reserve [Line Items]
Restructuring charges			7			7
Project Accelerate | Employee Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			25		3	25
Project Accelerate | Employee Costs | Clean Air
Restructuring Cost and Reserve [Line Items]
Restructuring charges					3
Voluntary Termination Program | Powertrain | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring costs	2		1		$ 4	1
Voluntary Termination Program | Employee Costs | Powertrain
Restructuring Cost and Reserve [Line Items]
Restructuring costs	10
Voluntary Termination Program | Employee Costs | Powertrain | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring costs			1			1
Voluntary Termination Program | Termination benefits | Powertrain
Restructuring Cost and Reserve [Line Items]
Restructuring costs	31
Voluntary Termination Program | Special termination benefits | Powertrain
Restructuring Cost and Reserve [Line Items]
Restructuring costs	21
Voluntary Termination Program | Other restructuring | Powertrain
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 2
Supply Chain Rationalization | Motorparts | North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges			4			4
Distribution Network | Motorparts | North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 4			$ 4

Restructuring Charges, Net an_5

Restructuring Charges, Net and Asset Impairments - Roll Forward of Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 99	$ 100	$ 83	$ 101	$ 100	$ 101
Provisions	32	34	96	15
Revisions to estimates	(8)	(9)	(4)	(2)
Payments	(24)	(25)	(35)	(30)
Foreign currency		(1)		(1)
Restructuring reserve, ending balance	99	99	140	83	99	140
Employee Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	99	99	81	97	99	97
Provisions	30	31	90	10
Revisions to estimates	(8)	(9)	(4)	(2)
Payments	(22)	(21)	(31)	(23)
Foreign currency		(1)		(1)
Restructuring reserve, ending balance	99	99	136	81	99	136
Facility Closure and Other Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0	1	2	4	1	4
Provisions	2	3	6	5
Revisions to estimates	0	0	0	0
Payments	(2)	(4)	(4)	(7)
Foreign currency		0		0
Restructuring reserve, ending balance	$ 0	$ 0	$ 4	$ 2	$ 0	$ 4

Inventories- Schedule of Invent

Inventories- Schedule of Inventory (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Finished goods	$ 797	$ 758
Work in process	551	449
Raw materials	479	441
Materials and supplies	93	95
Total inventories	$ 1,920	$ 1,743

Inventories- Narrative (Details

Inventories- Narrative (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Inventory [Line Items]
Total asset impairment charges	$ 3		$ 29		$ 3	$ 500
Restructuring charges	32	$ 34	96	$ 15
Employee Costs
Inventory [Line Items]
Restructuring charges	30	$ 31	90	$ 10
Motorparts
Inventory [Line Items]
Inventory write-down	44		82		44	82
Total asset impairment charges	1		16		1	16
Operating lease impairment			9			9
Motorparts | Employee Costs
Inventory [Line Items]
Restructuring charges	1		$ 4		1	$ 4
Motorparts | Other restructuring
Inventory [Line Items]
Restructuring charges	$ 3				$ 3

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Goodwill (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Jun. 30, 2021USD ($)reporting_unit	Jun. 30, 2020reporting_unit	Dec. 31, 2020USD ($)
Goodwill [Roll Forward]
Gross carrying amount at beginning of period	$ 1,251	$ 1,254	$ 1,254
Foreign exchange	2	(3)
Gross carrying amount at end of period	1,253	1,251	1,253
Accumulated impairment loss, beginning balance	(743)	(746)	(746)
Foreign exchange	(2)	3
Accumulated impairment loss, ending balance	(745)	(743)	(745)
Net carrying value at June 30, 2021	508		508		$ 508
Number of reporting units with goodwill | reporting_unit				2
Motorparts
Goodwill [Roll Forward]
Gross carrying amount at beginning of period	623	623	623
Foreign exchange	0	0
Gross carrying amount at end of period	623	623	623
Accumulated impairment loss, beginning balance	(310)	(310)	(310)
Foreign exchange	0	0
Accumulated impairment loss, ending balance	(310)	(310)	(310)
Net carrying value at June 30, 2021	313		$ 313
Number of reporting units with goodwill | reporting_unit			1	1
Performance Solutions
Goodwill [Roll Forward]
Gross carrying amount at beginning of period	546	549	$ 549
Foreign exchange	2	(3)
Gross carrying amount at end of period	548	546	548
Accumulated impairment loss, beginning balance	(374)	(377)	(377)
Foreign exchange	(2)	3
Accumulated impairment loss, ending balance	(376)	(374)	(376)
Net carrying value at June 30, 2021	172		$ 172
Number of reporting units with goodwill | reporting_unit			2	1
Clean Air
Goodwill [Roll Forward]
Gross carrying amount at beginning of period	23	23	$ 23
Foreign exchange	0	0
Gross carrying amount at end of period	23	23	23
Accumulated impairment loss, beginning balance	0	0	0
Foreign exchange	0	0
Accumulated impairment loss, ending balance	0	0	0
Net carrying value at June 30, 2021	23		$ 23
Number of reporting units with goodwill | reporting_unit			3
Powertrain
Goodwill [Roll Forward]
Gross carrying amount at beginning of period	59	59	$ 59
Foreign exchange	0	0
Gross carrying amount at end of period	59	59	59
Accumulated impairment loss, beginning balance	(59)	(59)	(59)
Foreign exchange	0	0
Accumulated impairment loss, ending balance	(59)	$ (59)	(59)
Net carrying value at June 30, 2021	0		$ 0
Number of reporting units with goodwill | reporting_unit				1
Greater than 25% | Motorparts
Goodwill [Roll Forward]
Number of reporting units with goodwill | reporting_unit			1
Goodwill for reporting units where fair value exceeds carrying value	313		$ 313
Greater than 25% | Performance Solutions
Goodwill [Roll Forward]
Number of reporting units with goodwill | reporting_unit			1
Goodwill for reporting units where fair value exceeds carrying value	7		$ 7
Greater than 25% | Clean Air
Goodwill [Roll Forward]
Number of reporting units with goodwill | reporting_unit			3
Goodwill for reporting units where fair value exceeds carrying value	23		$ 23
Less than 25% | Motorparts
Goodwill [Roll Forward]
Number of reporting units with goodwill | reporting_unit			0
Goodwill for reporting units where fair value exceeds carrying value	0		$ 0
Less than 25% | Performance Solutions
Goodwill [Roll Forward]
Number of reporting units with goodwill | reporting_unit			1
Goodwill for reporting units where fair value exceeds carrying value	165		$ 165
Less than 25% | Clean Air
Goodwill [Roll Forward]
Number of reporting units with goodwill | reporting_unit			0
Goodwill for reporting units where fair value exceeds carrying value	$ 0		$ 0

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021reporting_unit	Jun. 30, 2020USD ($)reporting_unit
Goodwill [Line Items]
Goodwill impairment charges		$ 267
Number of reporting units with goodwill | reporting_unit		2
Trade names and trademarks intangible asset impairment charges		$ 51
Definite-lived intangible assets impairment charges		65
Motorparts
Goodwill [Line Items]
Goodwill impairment charges		$ 70
Number of reporting units with goodwill | reporting_unit	1	1
Trade names and trademarks intangible asset impairment charges		$ 40
Definite-lived intangible assets impairment charges		$ 0
Motorparts | Trademarks and Trade Names
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit		1
Performance Solutions
Goodwill [Line Items]
Goodwill impairment charges		$ 156
Number of reporting units with goodwill | reporting_unit	2	1
Trade names and trademarks intangible asset impairment charges		$ 11
Definite-lived intangible assets impairment charges		$ 65
Performance Solutions | Trademarks and Trade Names
Goodwill [Line Items]
Number of reporting units with goodwill | reporting_unit		1
Powertrain
Goodwill [Line Items]
Goodwill impairment charges		$ 41
Number of reporting units with goodwill | reporting_unit		1
Trade names and trademarks intangible asset impairment charges		$ 0
Definite-lived intangible assets impairment charges		$ 0

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Impairment Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Goodwill impairment charges				$ 267
Trade names and trademarks intangible asset impairment charges				51
Definite-lived intangible asset impairment charges				65
Total impairment charges	$ 0	$ 0	$ 0	383
Motorparts
Segment Reporting Information [Line Items]
Goodwill impairment charges				70
Trade names and trademarks intangible asset impairment charges				40
Definite-lived intangible asset impairment charges				0
Total impairment charges				110
Performance Solutions
Segment Reporting Information [Line Items]
Goodwill impairment charges				156
Trade names and trademarks intangible asset impairment charges				11
Definite-lived intangible asset impairment charges				65
Total impairment charges				232
Powertrain
Segment Reporting Information [Line Items]
Goodwill impairment charges				41
Trade names and trademarks intangible asset impairment charges				0
Definite-lived intangible asset impairment charges				0
Total impairment charges				$ 41

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 1,356	$ 1,359
Accumulated Amortization	(466)	(402)
Net Carrying Value	890	957
Trade names and trademarks	235	237
Total	$ 1,125	1,194
Customer relationships and platforms
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years
Gross Carrying Value	$ 994	995
Accumulated Amortization	(328)	(282)
Net Carrying Value	$ 666	713
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years
Gross Carrying Value	$ 8	8
Accumulated Amortization	(6)	(6)
Net Carrying Value	2	2
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1	1
Accumulated Amortization	(1)	(1)
Net Carrying Value	$ 0	0
Patents | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years
Patents | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	17 years
Technology rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 137	139
Accumulated Amortization	(56)	(51)
Net Carrying Value	$ 81	88
Technology rights | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years
Technology rights | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	30 years
Packaged kits know-how
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years
Gross Carrying Value	$ 54	54
Accumulated Amortization	(15)	(12)
Net Carrying Value	$ 39	42
Catalogs
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years
Gross Carrying Value	$ 47	47
Accumulated Amortization	(13)	(11)
Net Carrying Value	34	36
Licensing agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	65	66
Accumulated Amortization	(42)	(35)
Net Carrying Value	$ 23	31
Licensing agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	3 years
Licensing agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	5 years
Land use rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 50	49
Accumulated Amortization	(5)	(4)
Net Carrying Value	$ 45	$ 45
Land use rights | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	28 years
Land use rights | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	46 years

Goodwill and Other Intangible_7

Goodwill and Other Intangible Assets - Amortization (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 33	$ 32	$ 65	$ 66
2021	64		64
2022	125		125
2023	122		122
2024	114		114
2025	114		114
2026 and thereafter	351		351
Net Carrying Value	$ 890		$ 890		$ 957

Investment in Nonconsolidated_3

Investment in Nonconsolidated Affiliates (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]
Difference between carrying amount and underlying net assets	$ 278	$ 287

Investment in Nonconsolidated_4

Investment in Nonconsolidated Affiliates - Summarized Financial Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule of Equity Method Investments [Line Items]
Sales	$ 4,583	$ 2,637	$ 9,314	$ 6,473
Income from continuing operations	58	(441)	192	(1,361)
Net income	17	(340)	104	(1,166)
Equity Method Investment, Nonconsolidated
Schedule of Equity Method Investments [Line Items]
Sales	282	88	545	307
Gross profit	72	17	143	69
Income from continuing operations	54	10	115	49
Net income	44	11	100	41
Equity Method Investment, Nonconsolidated | Otomotiv A.S.
Schedule of Equity Method Investments [Line Items]
Sales	94	36	196	120
Gross profit	29	6	64	32
Income from continuing operations	25	4	57	27
Net income	17	5	51	23
Equity Method Investment, Nonconsolidated | Anqing TP Goetze
Schedule of Equity Method Investments [Line Items]
Sales	52	11	101	41
Gross profit	14	5	28	11
Income from continuing operations	14	4	28	11
Net income	13	4	25	10
Equity Method Investment, Nonconsolidated | Other
Schedule of Equity Method Investments [Line Items]
Sales	136	41	248	146
Gross profit	29	6	51	26
Income from continuing operations	15	2	30	11
Net income	$ 14	$ 2	$ 24	$ 8

Financial Instruments and Fai_3

Financial Instruments and Fair Value - Summarization for Foreign Currency Forward Purchase and Sale Contracts (Details) - Foreign exchange forward $ in Millions	Jun. 30, 2021USD ($)
Long positions
Derivative [Line Items]
Notional amount	$ 277
Short positions
Derivative [Line Items]
Notional amount	$ 282

Financial Instruments and Fai_4

Financial Instruments and Fair Value - Cash-Settled Award (Details) - shares	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	4,748,936	1,878,220
Deferred compensation arrangements (in shares)	1,584,039	1,125,605
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	1,758,443	1,878,220
Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	2,990,493	0

Financial Instruments and Fai_5

Financial Instruments and Fair Value - Additional Information (Details) € in Millions	6 Months Ended
	Jun. 30, 2021USD ($)shares	Jun. 30, 2020USD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)shares	Dec. 31, 2020EUR (€)shares	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Financial Instruments [Line Items]
Collateral amount	$ 15,000,000			$ 7,000,000
Long-term debt	5,081,000,000			5,171,000,000
Stockholders' equity	272,000,000			181,000,000
Definite-lived intangible asset impairment charges		$ 65,000,000
Performance Solutions
Financial Instruments [Line Items]
Definite-lived intangible asset impairment charges		65,000,000
Impairment of property, plant and equipment		455,000,000
Cash flow hedges:
Financial Instruments [Line Items]
Stockholders' equity	1,000,000	$ 2,000,000	$ 2,000,000	4,000,000		$ (2,000,000)	$ 0
Valuation, Income Approach
Financial Instruments [Line Items]
Goodwill measurement input		0.75
Valuation, Market Approach
Financial Instruments [Line Items]
Goodwill measurement input		0.25
Other debt, primarily foreign instruments
Financial Instruments [Line Items]
Fair value of long term debt	$ 146,000,000			180,000,000
Debt term	1 year
Net investment hedging
Financial Instruments [Line Items]
Long-term debt	$ 0			$ 420,000,000	€ 344
Swap Agreements
Financial Instruments [Line Items]
Notional amount (in shares) | shares	3,200,000			1,700,000	1,700,000
Commodity contracts
Financial Instruments [Line Items]
Notional amount	$ 40,000,000			$ 10,000,000
Term of derivative	1 year

Financial Instruments and Fai_6

Financial Instruments and Fair Value - Estimated Fair Value of Financial Instruments (Details) - Level 2 - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Prepayments and other current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other financial instruments in asset positions	$ 29	$ 1
Accrued expenses and other current liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other financial instruments in liability positions	$ 3	$ 0

Financial Instruments and Fai_7

Financial Instruments and Fair Value - Schedule of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Commodity contracts | Commodity price hedge contracts designated as cash flow hedges
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amount of gain (loss) recognized in accumulated OCI or OCL (effective portion)	$ (1)	$ 5		$ 2
Foreign Currency | Foreign currency borrowings designated as a net investment hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amount of gain (loss) recognized in accumulated OCI or OCL (effective portion)	$ 0	$ (16)	$ 11	$ (2)

Financial Instruments and Fai_8

Financial Instruments and Fair Value - Fair Value of Long Term Debt (Details) - Level 2 - Term loans and senior notes - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	$ 5,061	$ 5,153
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	$ 5,213	$ 5,138

Debt and Other Financing Arra_3

Debt and Other Financing Arrangements - Summary of Long-Term Debt Obligations (Details)	Jun. 30, 2021USD ($)	Jun. 30, 2021EUR (€)	Mar. 17, 2021USD ($)	Mar. 03, 2021	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Carrying amount	$ 5,088,000,000				$ 5,176,000,000
Less - maturities classified as current	7,000,000				5,000,000
Total long-term debt	5,081,000,000				5,171,000,000
Unamortized debt issuance costs	87,000,000				82,000,000
Debt discount	1,000,000
Unamortized premium					(20,000,000)
Revolver Borrowings | Due 2023
Debt Instrument [Line Items]
Principal	0				0
Carrying amount	0				0
Term Loans | A2.00 Term Loan A Due 2019 Through 2023
Debt Instrument [Line Items]
Principal	1,466,000,000				1,530,000,000
Carrying amount	$ 1,458,000,000				$ 1,520,000,000
Stated rate	2.00%	2.00%
Term Loans | A2.00 Term Loan A Due 2019 Through 2023 | LIBOR
Debt Instrument [Line Items]
Stated rate					2.50%
Term Loans | 3.00% Term Loan B Due 2019 Through 2025
Debt Instrument [Line Items]
Principal	$ 1,658,000,000				$ 1,666,000,000
Carrying amount	$ 1,609,000,000				1,612,000,000
Stated rate	3.00%	3.00%
Senior Notes | 5.375% Senior Notes due 2024
Debt Instrument [Line Items]
Principal	$ 225,000,000	€ 225,000,000			225,000,000
Carrying amount	$ 223,000,000				223,000,000
Stated rate	5.375%	5.375%
Senior Notes | 5.000% Senior Notes due 2026
Debt Instrument [Line Items]
Principal	$ 500,000,000	€ 500,000,000			500,000,000
Carrying amount	$ 495,000,000				494,000,000
Stated rate	5.00%	5.00%
Senior Notes | Euro Floating Rate Notes due 2024
Debt Instrument [Line Items]
Principal	$ 0	€ 300,000,000			366,000,000
Carrying amount	$ 0				370,000,000
Stated rate	4.875%	4.875%
Senior Notes | 5.000% Euro Fixed Rate Notes due 2024
Debt Instrument [Line Items]
Principal	$ 0	€ 350,000,000			428,000,000
Carrying amount	$ 0				445,000,000
Stated rate	5.00%	5.00%		5.00%
Senior Notes | 7.875% Senior Secured Notes Due 2029
Debt Instrument [Line Items]
Principal	$ 500,000,000				500,000,000
Carrying amount	$ 490,000,000				489,000,000
Stated rate	7.875%	7.875%
Senior Notes | 5.125% Senior Secured Notes Due 2029
Debt Instrument [Line Items]
Principal	$ 800,000,000		$ 800,000,000		0
Carrying amount	$ 786,000,000				0
Stated rate	5.125%	5.125%	5.125%
Other debt, primarily foreign instruments
Debt Instrument [Line Items]
Principal	$ 28,000,000				24,000,000
Carrying amount	$ 27,000,000				$ 23,000,000

Debt and Other Financing Arra_4

Debt and Other Financing Arrangements - Term Loans (Details) $ in Billions	Oct. 01, 2018USD ($)
Revolver Borrowings
Line of Credit Facility [Line Items]
Borrowing capacity	$ 4.9
Revolving Credit Facility | Revolver Borrowings
Line of Credit Facility [Line Items]
Borrowing capacity	$ 1.5
Debt term	5 years
Term Loan A Facility | Term Loans
Line of Credit Facility [Line Items]
Borrowing capacity	$ 1.7
Debt term	5 years
Term Loan B Facility | Term Loans
Line of Credit Facility [Line Items]
Borrowing capacity	$ 1.7
Debt term	7 years

Debt and Other Financing Arra_5

Debt and Other Financing Arrangements - Short Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Maturities classified as current	$ 7	$ 5
Short-term borrowings	119	157
Total short-term debt	$ 126	$ 162

Debt and Other Financing Arra_6

Debt and Other Financing Arrangements - Financing Arrangements (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Available	$ 1,500
Liquidity	2,200
Cash	719
Long-term Debt	5,081	$ 5,171
Unamortized debt issuance costs	87	82
Other assets
Debt Instrument [Line Items]
Unamortized debt issuance costs	14	$ 17
Tenneco Inc. revolving credit agreement
Debt Instrument [Line Items]
Available	1,500
Long-term Debt	0
Tenneco Inc. Term Loan A
Debt Instrument [Line Items]
Available	0
Tenneco Inc. Term Loan B
Debt Instrument [Line Items]
Available	0
Subsidiaries’ credit agreements
Debt Instrument [Line Items]
Available	$ 0

Debt and Other Financing Arra_7

Debt and Other Financing Arrangements - New Credit Facility (Details) - Revolving Credit Facility	6 Months Ended
	Jun. 30, 2021
LIBOR | Term Loan A, New Credit Facility, Third Amendment
Line of Credit Facility [Line Items]
Basis spread	200.00%
Debt Covenant, Term 1 | Minimum | Term Loan A, New Credit Facility, Third Amendment, Scenario 2
Line of Credit Facility [Line Items]
Consolidated net leverage ratio	3
Debt Covenant, Term 1 | Maximum | Term Loan A, New Credit Facility, Third Amendment, Scenario 2
Line of Credit Facility [Line Items]
Consolidated net leverage ratio	4.5

Debt and Other Financing Arra_8

Debt and Other Financing Arrangements - Senior Notes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 17, 2021	Mar. 03, 2021
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt	$ 0	$ 0	$ 8	$ 0
Senior Notes | 5 3/8% Senior Notes due 2024
Debt Instrument [Line Items]
Stated rate	5.375%		5.375%
Senior Notes | 5.000% Senior Notes due 2026
Debt Instrument [Line Items]
Stated rate	5.00%		5.00%
Senior Notes | 5.000% Euro Fixed Rate Notes due 2024
Debt Instrument [Line Items]
Stated rate	5.00%		5.00%			5.00%
Senior Notes | 5.125% Senior Secured Notes Due 2029
Debt Instrument [Line Items]
Stated rate	5.125%		5.125%		5.125%

Debt and Other Financing Arra_9

Debt and Other Financing Arrangements - Accounts Receivable Securitization (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Accounts receivable outstanding and derecognized	$ 1,000		$ 1,000		$ 1,000
Cash proceeds received for assets derecognized, amount	400		400		400
Deferred purchase price receivable	62		62		$ 51
Proceeds from factoring qualifying as sales	1,300	$ 700	2,600	$ 1,900
Proceeds from factoring qualifying as draft amount	1,000	500	2,100	1,600
Interest Expense
Debt Instrument [Line Items]
Loss on sale of receivables	$ 5	$ 4	$ 9	$ 10

Debt and Other Financing Arr_10

Debt and Other Financing Arrangements - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 87	$ 82
Liquidity	2,200
Cash	719
Long-term Debt	5,081	5,171
Letters of credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	28
Uncommitted Letters of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	77
Tenneco Inc. revolving credit agreement
Debt Instrument [Line Items]
Long-term Debt	0
Other assets
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 14	$ 17

Pension Plans, Postretirement_3

Pension Plans, Postretirement and Other Employee Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	2	3	3	5
Expected return on plan assets	0	0	0	0
Net amortization:
Actuarial loss	0	0	1	1
Prior service cost (credit)	(3)	(2)	(5)	(4)
Net pension and postretirement costs (credits)	(1)	1	(1)	2
U.S. | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	1	1
Interest cost	7	10	15	20
Expected return on plan assets	(16)	(16)	(32)	(32)
Net amortization:
Actuarial loss	3	1	6	3
Prior service cost (credit)	0	0	0	0
Net pension and postretirement costs (credits)	(5)	(4)	(10)	(8)
Non-U.S. | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	6	13	12
Interest cost	5	5	9	9
Expected return on plan assets	(4)	(4)	(8)	(8)
Net amortization:
Actuarial loss	3	2	5	4
Prior service cost (credit)	0	0	0	0
Net pension and postretirement costs (credits)	$ 10	$ 9	$ 19	$ 17

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 41	$ (101)	$ 88	$ (195)
Earnings (loss) before income taxes and noncontrolling interests	$ 58	$ (441)	$ 192	(1,361)
Tax beenefit relating to valuation allowance				111
Asset impairments				$ 883
Decrease in UTB that is reasonably possible					$ 43
Unrecognized tax benefits					54
Valuation Allowance					$ 54

Commitments and Contingencies -

Commitments and Contingencies - Environmental Matters (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Accrued expenses and other current liabilities	$ 9	$ 8
Deferred credits and other liabilities	24	26
Environmental remediation accrual, discounted basis	$ 33	$ 34

Commitments and Contingencies_2

Commitments and Contingencies - Other Legal Proceedings, Claims and Investigations (Details)	6 Months Ended
	Jun. 30, 2021case
United states
Loss Contingencies [Line Items]
Current docket of active and inactive cases nationwide relating to alleged exposure to asbestos from our product categories	500
Europe
Loss Contingencies [Line Items]
Current docket of active and inactive cases nationwide relating to alleged exposure to asbestos from our product categories	50
Minimum
Loss Contingencies [Line Items]
Warranty term	1 year

Commitments and Contingencies_3

Commitments and Contingencies - Asset Retirement Obligations (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Asset retirement obligation	$ 14	$ 14
Accrued expenses and other current liabilities
Loss Contingencies [Line Items]
Asset retirement obligation	2	2
Deferred credits and other liabilities
Loss Contingencies [Line Items]
Asset retirement obligation	$ 12	$ 12

Commitments and Contingencies_4

Commitments and Contingencies - Warranty Accrual Table (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of period	$ 67	$ 51	$ 62	$ 54
Accruals and revisions to estimates	18	1	32	4
Settlements	(14)	(1)	(22)	(7)
Foreign currency	1	(1)	0	(1)
Balance at end of period	$ 72	$ 50	$ 72	$ 50

Share-Based Compensation (Detai

Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Compensation expense	$ 16	$ 8	$ 25	$ 10
Cash-Settled Awards
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Compensation expense	12	1	16	1
Share-settled
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Compensation expense	$ 4	$ 7	$ 9	$ 9

Share-Based Compensation - Cash

Share-Based Compensation - Cash-Settled Awards (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	4,748,936		1,878,220
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	1,758,443		1,878,220
Share-based compensation liability	$ 11	$ 3
Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash-settled share based units (in shares)	2,990,493		0
Share-based compensation liability	$ 8
Performance Share Units (PSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential pay out, cash-settled award base on performance	0.00%
Performance Share Units (PSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential pay out, cash-settled award base on performance	200.00%
Cash-Settled Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 72
Unrecognized compensation costs, not yet recognized	2 years

Share-Based Compensation - Unve

Share-Based Compensation - Unvested Restricted Shares (Details)	6 Months Ended
	Jun. 30, 2021$ / sharesshares
Share-Settled RSUs
Nonvested Restricted Shares
Unvested, beginning balance (in shares) | shares	2,118,605
Granted (in shares) | shares	2,078,409
Vested (in shares) | shares	(635,023)
Forfeited (in shares) | shares	(171,384)
Unvested, ending balance (in shares) | shares	3,390,607
Weighted Avg. Grant Date Fair Value
Unvested, beginning balance (in dollars per share) | $ / shares	$ 26
Granted (in dollars per share) | $ / shares	10.70
Vested (in dollars per share) | $ / shares	34.09
Forfeited (in dollars per share) | $ / shares	19.78
Unvested, ending balance (in dollars per share) | $ / shares	$ 14.89
Share-Settled PSUs
Nonvested Restricted Shares
Unvested, beginning balance (in shares) | shares	527,105
Granted (in shares) | shares	0
Vested (in shares) | shares	(57,794)
Forfeited (in shares) | shares	(134,361)
Unvested, ending balance (in shares) | shares	334,950
Weighted Avg. Grant Date Fair Value
Unvested, beginning balance (in dollars per share) | $ / shares	$ 36.37
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	49.18
Forfeited (in dollars per share) | $ / shares	46.61
Unvested, ending balance (in dollars per share) | $ / shares	$ 24.60
Share-Settled PSUs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential pay out, share-settled award base on performance	0.00%
Share-Settled PSUs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential pay out, share-settled award base on performance	200.00%

Shareholders' Equity - Shares O

Shareholders' Equity - Shares Outstanding (Details) - $ / shares	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock, shares authorized (in shares)	50,000,000		50,000,000
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01
Preferred stock, shares issued (in shares)	0		0
Preferred stock, shares outstanding (in shares)	0		0
Class A
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	175,000,000		175,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued at beginning of period (in shares)		71,727,061
Issued pursuant to benefit plans (in shares)	790,467	458,855
Withheld for taxes pursuant to benefit plans (in shares)	(249,015)	(124,440)
Class B common stock converted to Class A common stock (in shares)	20,308,454	3,485,215
Shares issued at end of period (in shares)		75,546,691
Treasury stock (in shares)	14,592,888	14,592,888	14,592,888
Total shares outstanding (in shares)	81,971,181	60,953,803
Class B
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	25,000,000		25,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued at beginning of period (in shares)	20,308,454	23,793,669
Issued pursuant to benefit plans (in shares)	0	0
Withheld for taxes pursuant to benefit plans (in shares)	0	0
Class B common stock converted to Class A common stock (in shares)	(20,308,454)	(3,485,215)
Shares issued at end of period (in shares)		20,308,454
Treasury stock (in shares)	0	0
Total shares outstanding (in shares)	0	20,308,454

Shareholders' Equity - Share Co

Shareholders' Equity - Share Conversion (Details) - shares	6 Months Ended
	Jun. 30, 2021	Aug. 04, 2021
Class A
Conversion of Stock [Line Items]
Shares converted (in shares)	20,308,454
Class B
Conversion of Stock [Line Items]
Shares converted (in shares)	20,308,454
Tenneco | Icahn Enterprises L.P. | Class A | Subsequent Event
Conversion of Stock [Line Items]
Ownership percentage		10.00%

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period			$ 181
Balance at end of period	$ 272		272
Other comprehensive income (loss) attributable to noncontrolling interests	4	$ 7	(2)	$ (13)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(789)	(908)	(744)	(711)
Balance at end of period	(729)	(874)	(729)	(874)
Foreign currency translation adjustments:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(441)	(568)	(395)	(369)
Other comprehensive income (loss) before reclassifications	58	34	12	(165)
Reclassification from other comprehensive income (loss)	0	0	0	0
Other comprehensive income (loss)	58	34	12	(165)
Income tax benefit (provision)	0	1	0	1
Balance at end of period	(383)	(533)	(383)	(533)
Defined benefit plans:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(350)	(338)	(353)	(342)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Reclassification from other comprehensive income (loss)	3	1	7	4
Other comprehensive income (loss)	3	1	7	4
Income tax benefit (provision)	0	(6)	(1)	(5)
Balance at end of period	(347)	(343)	(347)	(343)
Cash flow hedges:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	2	(2)	4	0
Other comprehensive income (loss) before reclassifications	(1)	5	1	2
Reclassification from other comprehensive income (loss)	0	0	(4)	0
Other comprehensive income (loss)	(1)	5	(3)	2
Income tax benefit (provision)	0	(1)	0	0
Balance at end of period	$ 1	$ 2	$ 1	$ 2

Segment Information - Additiona

Segment Information - Additional Information (Details)	6 Months Ended
	Jun. 30, 2021Segment
Segment Reporting [Abstract]
Number of operating segments	4

Segment Information - Segment I

Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting [Line Items]
Net sales and operating revenues	$ 4,583	$ 2,637	$ 9,314	$ 6,473
Equity in earnings of nonconsolidated affiliates, net of tax	15	4	37	17
Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	4,583	2,637	9,314	6,473
Equity in earnings of nonconsolidated affiliates, net of tax	15	4	37	17
Motorparts
Segment Reporting [Line Items]
Net sales and operating revenues	794	559	1,513	1,265
Motorparts | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	794	559	1,513	1,265
Equity in earnings of nonconsolidated affiliates, net of tax	4	1	7	3
Performance Solutions
Segment Reporting [Line Items]
Net sales and operating revenues	715	378	1,502	1,047
Performance Solutions | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	715	378	1,502	1,047
Equity in earnings of nonconsolidated affiliates, net of tax	0	1	1	1
Clean Air
Segment Reporting [Line Items]
Net sales and operating revenues	2,024	1,140	4,148	2,685
Clean Air | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	2,024	1,140	4,148	2,685
Equity in earnings of nonconsolidated affiliates, net of tax	0	0	0	0
Powertrain
Segment Reporting [Line Items]
Net sales and operating revenues	1,050	560	2,151	1,476
Powertrain | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	1,050	560	2,151	1,476
Equity in earnings of nonconsolidated affiliates, net of tax	11	2	29	13
Intersegment Revenues
Segment Reporting [Line Items]
Net sales and operating revenues	0	0	0	0
Intersegment Revenues | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	(84)	(51)	(172)	(133)
Intersegment Revenues | Reclass & Elims
Segment Reporting [Line Items]
Net sales and operating revenues	84	51	172	133
Intersegment Revenues | Motorparts | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	(10)	(6)	(19)	(15)
Intersegment Revenues | Performance Solutions | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	(23)	(21)	(49)	(50)
Intersegment Revenues | Clean Air | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	(4)	(3)	(10)	(9)
Intersegment Revenues | Powertrain | Operating Segments
Segment Reporting [Line Items]
Net sales and operating revenues	$ (47)	$ (21)	$ (94)	$ (59)

Segment Information - Segment A

Segment Information - Segment Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Depreciation and amortization	$ (145)	$ (159)	$ (300)	$ (330)
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	127	(375)	331	(1,220)
Interest expense	(69)	(66)	(139)	(141)
Income tax (expense) benefit	(41)	101	(88)	195
Net income (loss)	17	(340)	104	(1,166)
Total Reportable Segments
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	336	(167)	745	(755)
Total Reportable Segments | Motorparts
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	67	(52)	169	(92)
Total Reportable Segments | Performance Solutions
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	32	(63)	75	(737)
Total Reportable Segments | Clean Air
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	143	17	292	116
Total Reportable Segments | Powertrain
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	94	(69)	209	(42)
Corporate
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	$ (64)	$ (49)	$ (114)	$ (135)

Segment Information - Segment R

Segment Information - Segment Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	$ 4,583	$ 2,637	$ 9,314	$ 6,473
Motorparts
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	794	559	1,513	1,265
Performance Solutions
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	715	378	1,502	1,047
Clean Air
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	2,024	1,140	4,148	2,685
Powertrain
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	1,050	560	2,151	1,476
North America
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	1,852	973	3,725	2,695
North America | Motorparts
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	501	389	955	865
North America | Performance Solutions
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	223	91	463	319
North America | Clean Air
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	812	335	1,663	1,039
North America | Powertrain
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	316	158	644	472
Europe, Middle East, Africa and South America
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	1,749	807	3,561	2,358
Europe, Middle East, Africa and South America | Motorparts
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	238	135	450	332
Europe, Middle East, Africa and South America | Performance Solutions
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	324	170	679	489
Europe, Middle East, Africa and South America | Clean Air
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	639	248	1,321	813
Europe, Middle East, Africa and South America | Powertrain
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	548	254	1,111	724
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	982	857	2,028	1,420
Asia Pacific | Motorparts
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	55	35	108	68
Asia Pacific | Performance Solutions
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	168	117	360	239
Asia Pacific | Clean Air
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	573	557	1,164	833
Asia Pacific | Powertrain
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	186	148	396	280
OE - Substrate
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	1,081	623	2,169	1,323
OE - Substrate | Motorparts
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	0	0	0	0
OE - Substrate | Performance Solutions
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	0	0	0	0
OE - Substrate | Clean Air
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	1,081	623	2,169	1,323
OE - Substrate | Powertrain
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	0	0	0	0
OE - Value add
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	2,690	1,445	5,595	3,860
OE - Value add | Motorparts
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	0	0	0	0
OE - Value add | Performance Solutions
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	697	368	1,465	1,022
OE - Value add | Clean Air
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	943	517	1,979	1,362
OE - Value add | Powertrain
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	1,050	560	2,151	1,476
Aftermarket
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	812	569	1,550	1,290
Aftermarket | Motorparts
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	794	559	1,513	1,265
Aftermarket | Performance Solutions
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	18	10	37	25
Aftermarket | Clean Air
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	0	0	0	0
Aftermarket | Powertrain
Disaggregation of Revenue [Line Items]
Net sales and operating revenues	$ 0	$ 0	$ 0	$ 0

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Otomotiv A.S.
Related Party Transaction [Line Items]
Net Sales	$ 11,000	$ 5,000	$ 21,000	$ 17,000
Purchases	67,000	17,000	143,000	76,000
Royalty and Other	0	2,000	3,000	6,000
Receivables	6,000		6,000		$ 10,000
Payables and Accruals	33,000		33,000		49,000
Anqing TP Goetze
Related Party Transaction [Line Items]
Net Sales	1,000	3,000	3,000	9,000
Purchases	28,000	18,000	55,000	31,000
Royalty and Other	2,000	1,000	3,000	1,000
Receivables	4,000		4,000		4,000
Payables and Accruals	35,000		35,000		30,000
Other nonconsolidated affiliates
Related Party Transaction [Line Items]
Net Sales	8,000	4,000	16,000	11,000
Purchases	13,000	5,000	25,000	18,000
Royalty and Other	1,000	0	1,000	0
Receivables	3,000		3,000		3,000
Payables and Accruals	6,000		6,000		7,000
Icahn Automotive Group LLC
Related Party Transaction [Line Items]
Net Sales	40,000	32,000	71,000	65,000
Purchases	0	0	0	0
Royalty and Other	0	1,000	1,000	2,000
Receivables	47,000		47,000		47,000
Payables and Accruals	4,000		4,000		$ 9,000
PSC Metals, Inc.
Related Party Transaction [Line Items]
Net Sales	0	1,000	0	1,000
Purchases	0	0	0	0
Royalty and Other	$ 0	$ 0	$ 1,000	$ 0