Tenneco (TEN) 10-Q 2 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 27, 2017
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Entity Registrant Name	TENNECO INC
Entity Central Index Key	1,024,725
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		51,588,561

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Net sales and operating revenues	$ 2,274,000,000	$ 2,096,000,000	$ 6,883,000,000	$ 6,444,000,000
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,913,000,000	1,743,000,000	5,790,000,000	5,329,000,000
Engineering, research, and development	40,000,000	41,000,000	115,000,000	117,000,000
Selling, general, and administrative	128,000,000	109,000,000	529,000,000	390,000,000
Depreciation and amortization of other intangibles	58,000,000	53,000,000	165,000,000	159,000,000
Costs and expenses	2,139,000,000	1,946,000,000	6,599,000,000	5,995,000,000
Other expense
Loss on sale of receivables	(2,000,000)	(2,000,000)	(4,000,000)	(4,000,000)
Other income	1,000,000	2,000,000	2,000,000	0
Total other expense	(1,000,000)	0	(2,000,000)	(4,000,000)
Earnings before interest expense, income taxes, and noncontrolling interests	134,000,000	150,000,000	282,000,000	445,000,000
Interest expense	19,000,000	24,000,000	54,000,000	76,000,000
Earnings before income taxes and noncontrolling interests	115,000,000	126,000,000	228,000,000	369,000,000
Income tax expense (benefit)	16,000,000	(70,000,000)	41,000,000	3,000,000
Net income	99,000,000	196,000,000	187,000,000	366,000,000
Less: Net income attributable to noncontrolling interests	16,000,000	17,000,000	48,000,000	48,000,000
Net income attributable to Tenneco Inc.	$ 83,000,000	$ 179,000,000	$ 139,000,000	$ 318,000,000
Weighted average shares of common stock outstanding —
Basic (in shares)	52,508,078	55,679,969	53,265,149	56,511,838
Diluted (in shares)	52,687,656	56,165,709	53,501,864	56,958,447
Basic earnings per share of common stock (in dollars per share)	$ 1.57	$ 3.22	$ 2.61	$ 5.63
Diluted earnings per share of common stock (in dollars per share)	$ 1.57	$ 3.19	$ 2.60	$ 5.58
Cash dividends declared (in dollars per share)	$ 0.25	$ 0	$ 0.75	$ 0

CONDENSED CONSOLIDATED STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income attributable to Tenneco Inc.	$ 83	$ 179	$ 139	$ 318
Less: Net income attributable to noncontrolling interests	16	17	48	48
Net Income	99	196	187	366
Translation of foreign currency statements attributable to Tenneco	28	1	81	4
Translation of foreign currency statements attributable to Noncontrolling Interest	1	0	4	(1)
Translation of foreign currency statements	29	1	85	3
Additional Liability for Pension and Postretirement Benefits, net of tax attributable to Tenneco	3	4	14	11
Additional liability for pension and postretirement benefits, net of tax	3	4	14	11
Accumulated Other Comprehensive Income (Loss)
Beginning balance			620
Ending balance	686	659	686	659
Other Comprehensive Income (Loss)	32	5	99	14
Comprehensive Income attributable to Tenneco	114	184	234	333
Comprehensive Income attributable to Noncontrolling Interest	17	17	52	47
Comprehensive Income	131	201	286	380
Tenneco Inc.
Net income attributable to Tenneco Inc.		179		318
Accumulated Other Comprehensive Income (Loss)
Ending balance	647	622	647	622
Other Comprehensive Income (Loss)	31	5	95	15
Comprehensive Income attributable to Tenneco		184		333
AOCI Tenneco, Inc
Accumulated Other Comprehensive Income (Loss)
Beginning balance			(665)	(665)
Ending balance	(570)	(650)	(570)	(650)
Other Comprehensive Income (Loss)			95	15
Tenneco, Inc. Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(285)	(294)	(338)	(297)
Reclassification	28	1	81	4
Ending balance	(257)	(293)	(257)	(293)
Tenneco, Inc. Additional Liability for Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(316)	(361)	(327)	(368)
Reclassification	3	4	14	11
Ending balance	(313)	(357)	(313)	(357)
Noncontrolling Interests
Less: Net income attributable to noncontrolling interests		17		48
Accumulated Other Comprehensive Income (Loss)
Beginning balance			47	39
Ending balance	39	37	39	37
Other Comprehensive Income (Loss)	1	0	4	(1)
Comprehensive Income attributable to Noncontrolling Interest		17		47
AOCI Noncontrolling Interests
Accumulated Other Comprehensive Income (Loss)
Ending balance	(1)	(2)	(1)	(2)
Noncontrolling Interests Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(2)	(2)	(5)	(1)
Reclassification	1	0	4	(1)
Ending balance	(1)	(2)	(1)	(2)
Total
Accumulated Other Comprehensive Income (Loss)
Ending balance	(571)	(652)	(571)	(652)
Total Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(287)	(296)	(343)	(298)
Reclassification	29	1	85	3
Ending balance	(258)	(295)	(258)	(295)
Total Additional Liability for Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(316)	(361)	(327)	(368)
Reclassification	3	4	14	11
Ending balance	$ (313)	$ (357)	$ (313)	$ (357)

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 277	$ 347
Restricted cash	2	2
Receivables —
Customer notes and accounts, net	1,451	1,272
Other	24	22
Inventories —
Finished goods	335	284
Work in process	289	245
Raw materials	184	137
Materials and supplies	74	64
Prepayments and other	325	229
Total current assets	2,961	2,602
Other assets:
Long-term receivables, net	9	9
Goodwill	59	57
Intangibles, net	17	19
Deferred income taxes	225	199
Other	123	103
Total other assets	433	387
Plant, property, and equipment, at cost	3,967	3,548
Less — Accumulated depreciation and amortization	(2,426)	(2,191)
Plant, property and equipment, net	1,541	1,357
Total Assets	4,935	4,346
Current liabilities:
Short-term debt (including current maturities of long-term debt)	108	90
Accounts payable	1,601	1,501
Accrued taxes	46	39
Accrued interest	10	15
Accrued liabilities	327	285
Other	140	43
Total current liabilities	2,232	1,973
Long-term debt	1,573	1,294
Deferred income taxes	6	7
Postretirement benefits	248	273
Deferred credits and other liabilities	158	139
Commitments and contingencies
Total liabilities	4,217	3,686
Redeemable noncontrolling interests	32	40
Tenneco Inc. Shareholders’ equity:
Common stock	1	1
Premium on common stock and other capital surplus	3,109	3,098
Accumulated other comprehensive loss	(570)	(665)
Retained earnings (accumulated deficit)	(1,001)	(1,100)
Total shareholders equity before treasury stock	1,539	1,334
Less — Shares held as treasury stock, at cost	892	761
Tenneco Inc. shareholders’ equity	647	573
Noncontrolling interests	39	47
Total equity	686	620
Total liabilities, redeemable noncontrolling interests and equity	$ 4,935	$ 4,346

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Operating Activities
Net Income	$ 99	$ 196	$ 187	$ 366
Adjustments to reconcile net income to cash provided by operating activities —
Depreciation and amortization of other intangibles	58	53	165	159
Deferred income taxes	(1)	(86)	(1)	(74)
Stock-based compensation	1	3	12	13
Loss on sale of assets	1	1	2	2
Changes in components of working capital —
(Increase) decrease in receivables	41	(10)	(135)	(189)
(Increase) decrease in inventories	(56)	(12)	(116)	(61)
(Increase) decrease in prepayments and other current assets	(8)	(34)	(76)	(69)
Increase (decrease) in payables	(29)	(5)	57	59
Increase (decrease) in accrued taxes	16	0	(22)	9
Increase (decrease) in accrued interest	(3)	9	(5)	9
Increase (decrease) in other current liabilities	(51)	10	101	(7)
Changes in long-term assets	(10)	1	(10)	5
Changes in long-term liabilities	(6)	11	1	13
Other	1	(7)	3	(2)
Net cash provided by operating activities	53	130	163	233
Investing Activities
Proceeds from sale of assets	0	1	6	4
Proceeds from sale of equity interest	0	0	9	0
Cash payments for plant, property, and equipment	(90)	(74)	(283)	(213)
Cash payments for software related intangible assets	(5)	(6)	(17)	(15)
Changes in restricted cash	0	1	0	(1)
Other	(1)	0	(5)	0
Net cash used by investing activities	(96)	(78)	(290)	(225)
Financing Activities
Issuance (repurchase) of common shares	1	5	(2)	7
Cash dividends	(14)	0	(40)	0
Retirement of long-term debt - net	(1)	(179)	(9)	(527)
Issuance of long-term debt - net	0	2	136	508
Debt issuance cost of long-term debt	0	0	(8)	(8)
Purchase of common stock under the share repurchase program	(71)	(89)	(131)	(146)
Net increase (decrease) in bank overdrafts	(3)	(1)	(12)	4
Net increase in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivable	84	198	144	223
Net increase in short-term borrowings secured by accounts receivable	0	50	20	20
Distributions to noncontrolling interest partners	(12)	(28)	(45)	(55)
Net cash provided (used) by financing activities	(16)	(42)	53	26
Effect of foreign exchange rate changes on cash and cash equivalents	3	3	4	3
Increase (decrease) in cash and cash equivalents	(56)	13	(70)	37
Cash and cash equivalents, July 1 and January 1, respectively	333	311	347	287
Cash and cash equivalents, September 30 (Note)	277	324	277	324
Supplemental Cash Flow Information
Cash paid during the period for interest (net of interest capitalized)	23	14	61	62
Cash paid during the period for income taxes (net of refunds)	31	30	74	88
Non-cash Investing and Financing Activities
Period end balance of trade payables for plant, property, and equipment	$ 53	$ 51	$ 53	$ 51

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS EQUITY (Unaudited) - USD ($)	Total	Common Stock	Premium on Common Stock and Other Capital Surplus	Accumulated Other Comprehensive Loss	Retained Earnings (Accumulated Deficit)	Less — Common Stock Held as Treasury Stock, at Cost	Tenneco Inc.	Noncontrolling Interests
Beginning balance at Dec. 31, 2015		$ 1,000,000	$ 3,081,000,000	$ (665,000,000)	$ (1,456,000,000)	$ 536,000,000		$ 39,000,000
Beginning balance (in shares) at Dec. 31, 2015		65,067,132				7,473,325
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued pursuant to benefit plans (shares)		313,332
Restricted shares forfeited (shares)		0
Stock options exercised (shares)		383,981
Premium on common stock issued pursuant to benefit plans			10,000,000
Other Comprehensive Income (Loss)	$ 14,000,000			15,000,000			$ 15,000,000	(1,000,000)
Net income attributable to Tenneco Inc.	318,000,000				318,000,000		318,000,000
Cash dividends declared	0				0
Purchase of common stock through stock repurchase program (shares)						2,783,064
Purchase of common stock through stock repurchase program						$ 146,000,000
Net income								20,000,000
Other comprehensive income	(1,000,000)							0
Dividends declared								(22,000,000)
Ending balance (in shares) at Sep. 30, 2016		65,764,445				10,256,389
Ending balance at Sep. 30, 2016	659,000,000	$ 1,000,000	3,091,000,000	(650,000,000)	(1,138,000,000)	$ 682,000,000	622,000,000	37,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss)	5,000,000						5,000,000	0
Net income attributable to Tenneco Inc.	179,000,000						179,000,000
Cash dividends declared	0
Ending balance (in shares) at Sep. 30, 2016		65,764,445				10,256,389
Ending balance at Sep. 30, 2016	659,000,000	$ 1,000,000	3,091,000,000	(650,000,000)	(1,138,000,000)	$ 682,000,000	622,000,000	37,000,000
Beginning balance at Dec. 31, 2016	620,000,000	$ 1,000,000	3,098,000,000	(665,000,000)	(1,100,000,000)	$ 761,000,000		47,000,000
Beginning balance (in shares) at Dec. 31, 2016		65,891,930				11,655,938
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued pursuant to benefit plans (shares)		35,843
Restricted shares forfeited (shares)		(126,682)
Stock options exercised (shares)		208,818
Premium on common stock issued pursuant to benefit plans			11,000,000
Other Comprehensive Income (Loss)	99,000,000			95,000,000			95,000,000	4,000,000
Net income attributable to Tenneco Inc.	139,000,000				139,000,000
Cash dividends declared	(0.75)				(40,000,000)
Purchase of common stock through stock repurchase program (shares)						2,310,443
Purchase of common stock through stock repurchase program						$ 131,000,000
Net income								21,000,000
Other comprehensive income	2,000,000							2,000,000
Dividends declared								(31,000,000)
Ending balance (in shares) at Sep. 30, 2017		66,009,909				13,966,381
Ending balance at Sep. 30, 2017	$ 686,000,000	$ 1,000,000	3,109,000,000	(570,000,000)	(1,001,000,000)	$ 892,000,000	647,000,000	39,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (shares)	50,125
Other Comprehensive Income (Loss)	$ 32,000,000						31,000,000	1,000,000
Net income attributable to Tenneco Inc.	83,000,000
Cash dividends declared	(0.25)
Ending balance (in shares) at Sep. 30, 2017		66,009,909				13,966,381
Ending balance at Sep. 30, 2017	$ 686,000,000	$ 1,000,000	$ 3,109,000,000	$ (570,000,000)	$ (1,001,000,000)	$ 892,000,000	$ 647,000,000	$ 39,000,000

Consolidation and Presentation

Consolidation and Presentation	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidation and Presentation	Consolidation and Presentation As you read the accompanying financial statements you should also read our amended Annual Report on Form 10-K/A for the year ended December 31, 2016 . In our opinion, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary for a fair statement of Tenneco Inc.’s results of operations, comprehensive income, financial position, cash flows, and changes in shareholders’ equity for the periods indicated. We have prepared the unaudited condensed consolidated financial statements pursuant to the rules and regulations of the U.S. Securities and Exchange Commission for interim financial information. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (U.S. GAAP) for annual financial statements. Our condensed consolidated financial statements include all majority-owned subsidiaries. We carry investments in 20 percent to 50 percent owned companies in which the Company does not have a controlling interest, as equity method investments, at cost plus equity in undistributed earnings since the date of acquisition and cumulative translation adjustments. We have eliminated all intercompany transactions. Revision of Previously Issued Financial Statements For the periods from April 1, 2013 through March 31, 2017, we identified in the second quarter of 2017 that approximately $34 million in lump sum payments from our suppliers were incorrectly recorded upon receipt as a reduction to cost of sales. The errors resulted from the intentional mischaracterization by certain purchasing and accounting personnel at the Company’s China subsidiaries of the nature of the accounting transactions related to the payments received from suppliers. These payments should have been deferred and amortized over the life of the underlying supplier agreements. The deferred amount related to these payments was $25 million at September 30, 2017 and recorded within deferred credit and other liabilities. In addition, we identified in the second quarter of 2017 an unrelated error of approximately $7 million of substrate liabilities that should have been accrued during the periods from January 1, 2016 through March 31, 2017, understating cost of sales in each of these periods. We evaluated the impact of these items on prior periods under the guidance of SEC Staff Accounting Bulletin (SAB) No. 99, “Materiality” and determined that the amounts were not material to previously issued financial statements. As a result, we will revise for interim periods in future filings, for certain amounts in the consolidated financial statements in order to correct these errors. See Note 14 in our notes to condensed consolidated financial statements located in Part I Item 1 of this Form 10-Q. Prepayments and Other Prepayments and other included $133 million and $97 million at September 30, 2017 and December 31, 2016 , respectively, for in-process tools and dies that we are building for our original equipment customers. Accounts Payable Accounts payable included $109 million and $99 million at September 30, 2017 and December 31, 2016 , respectively, for accrued compensation and $14 million and $26 million at September 30, 2017 and December 31, 2016 , respectively, for bank overdrafts at our European subsidiaries. Redeemable Noncontrolling Interests The following is a rollforward of activities in our redeemable noncontrolling interests for the nine months ended September 30, 2017 and 2016, respectively: Nine Months Ended September 30, 2017 2016 (Millions) Balance January 1 $ 40 $ 41 Net income attributable to redeemable noncontrolling interests 27 27 Other comprehensive loss 2 (1 ) Dividends declared (37 ) (35 ) Balance September 30 $ 32 $ 32

Financial Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Financial Instruments	Financial Instruments The net carrying and estimated fair values of our financial instruments by class at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 December 31, 2016 Net Carrying Amount Fair Value Net Carrying Amount Fair Value (Millions) Long-term debt (including current maturities) $ 1,575 $ 1,612 $ 1,297 $ 1,311 Equity swap agreement and foreign currency forward contracts: Asset derivative contracts (a) 6 6 — — (a) All derivatives are categorized within Level 2 of the fair value hierarchy. Asset and Liability Instruments — The fair value of cash and cash equivalents, short and long-term receivables, accounts payable, and short-term debt was considered to be the same as or was not determined to be materially different from the carrying amount. Long-term Debt — The fair value of our public fixed rate senior notes is based on quoted market prices (level 1). The fair value of our private borrowings under our senior credit facility and other long-term debt instruments is based on the market value of debt with similar maturities, interest rates and risk characteristics (level 2). The fair value of our level 1 debt, as classified in the fair value hierarchy, was $749 million and $725 million at September 30, 2017 and December 31, 2016 , respectively. We have classified $849 million and $571 million as level 2 in the fair value hierarchy at September 30, 2017 and December 31, 2016 , respectively, since we utilize valuation inputs that are observable both directly and indirectly. We classified the remaining $14 million and $15 million , consisting of foreign subsidiary debt, as level 3 in the fair value hierarchy at September 30, 2017 and December 31, 2016 , respectively. 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 our own assumptions. Foreign Exchange Forward Contracts — We use derivative financial instruments, principally foreign currency forward purchase and sales contracts with terms of less than one year , to hedge our exposure to changes in foreign currency exchange rates. Our primary exposure to changes in foreign currency rates results from intercompany loans made between affiliates to minimize the need for borrowings from third parties. Additionally, we enter into foreign currency forward purchase and sale contracts to mitigate our exposure to changes in exchange rates on certain intercompany and third-party trade receivables and payables. We manage counter-party credit risk by entering into derivative financial instruments with major financial institutions that can be expected to fully perform under the terms of such agreements. We do not enter into derivative financial instruments for speculative purposes. The fair value of our foreign currency forward contracts is based on an internally developed model which incorporates observable inputs including quoted spot rates, forward exchange rates and discounted future expected cash flows utilizing market interest rates with similar quality and maturity characteristics. We record the change in fair value of these foreign exchange forward contracts as part of currency gains (losses) within cost of sales in the consolidated statements of income. The fair value of foreign exchange forward contracts are recorded in prepayments and other current assets or other current liabilities in the consolidated balance sheet. The fair value of our foreign currency forward contracts was a net asset position of less than $1 million at September 30, 2017 and a net liability position of less than $1 million at December 31, 2016 , respectively. The following table summarizes by major currency the notional amounts for foreign currency forward purchase and sale contracts as of September 30, 2017 (all of which mature in 2017): Notional Amount in Foreign Currency (Millions) British pounds —Purchase 10 Canadian dollars —Sell (2 ) European euro —Sell (4 ) U.S. dollars —Purchase 7 —Sell (14 ) Cash-settled Share Swap Transactions — In the second quarter of 2017, we entered into an equity swap agreement with a financial institution. We selectively use cash-settled share swaps to reduce market risk associated with our deferred liabilities. These equity compensation liabilities increase as our stock price increases and decrease as our stock price decreases. In contrast, the value of the swap agreement moves in the opposite direction of these liabilities, allowing us to fix a portion of the liabilities at a stated amount. As of September 30, 2017 , we had hedged our deferred liability related to approximately 250,000 common share equivalents. The fair value of the equity swap agreement is recorded in other current assets in the consolidated balance sheet. The fair value of our equity swap agreement was a net asset position of $5 million at September 30, 2017. Guarantees —We have from time to time issued guarantees for the performance of obligations by some of our subsidiaries, and some of our subsidiaries have guaranteed our debt. All of our existing and future material domestic subsidiaries fully and unconditionally guarantee our senior credit facility and our senior notes on a joint and several basis. The arrangement for the senior credit facility is also secured by first-priority liens on substantially all our domestic assets and pledges of up to 66 percent of the stock of certain first-tier foreign subsidiaries. No assets or capital stock secure our senior notes. For additional information, refer to Note 13 of the condensed consolidated financial statements of Tenneco Inc., where we present the Supplemental Guarantor Condensed Consolidating Financial Statements. We have two performance guarantee agreements in the U.K. between Tenneco Management (Europe) Limited (“TMEL”) and the two Walker Group Retirement Plans, the Walker Group Employee Benefit Plan and the Walker Group Executive Retirement Benefit Plan (the “Walker Plans”), whereby TMEL will guarantee the payment of all current and future pension contributions in the event of a payment default by the sponsoring or participating employers of the Walker Plans. The Walker Plans are comprised of employees from Tenneco Walker (U.K.) Limited and Futaba (U.K.) Limited, formerly our Futaba-Tenneco (U.K.) joint venture. Employer contributions are funded by Tenneco Walker (U.K.) Limited, as the sponsoring employer, and were also funded by Futaba (U.K.) Limited prior to its ceasing, on April 28, 2017, to be an entity in which Tenneco has an equity interest. The performance guarantee agreements are expected to remain in effect until all pension obligations for the Walker Plans’ sponsoring and participating employers have been satisfied. We did not record an additional liability for this performance guarantee since Tenneco Walker (U.K.) Limited, as the sponsoring employer of the Walker Plans, already recognizes 100 percent of the pension obligation calculated based on U.S. GAAP, for all of the Walker Plans’ participating employers on its balance sheet, which was $12 million and $19 million at September 30, 2017 and December 31, 2016 , respectively. At September 30, 2017 , all pension contributions under the Walker Plans were current for all of the Walker Plans’ sponsoring and participating employers. In June 2011, we entered into an indemnity agreement between TMEL and Futaba Industrial Co. Ltd. (Futaba) which required Futaba to indemnify TMEL for any cost, loss or liability which TMEL may have incurred under the performance guarantee agreements relating to the Futaba-Tenneco U.K. joint venture. The maximum amount reimbursable by Futaba to TMEL under this indemnity agreement was equal to the amount incurred by TMEL under the performance guarantee agreements multiplied by Futaba’s shareholder ownership percentage of the Futaba-Tenneco U.K. joint venture. On April 28, 2017, Walker Limited sold its equity interest in the Futaba-Tenneco U.K. joint venture entity to Futaba Industrial Co., Ltd. In connection with the closing of that transaction, this indemnity agreement was terminated and accordingly Futaba no longer has any reimbursement obligations thereunder. We have issued guarantees through letters of credit in connection with some obligations of our affiliates. As of September 30, 2017 , we have guaranteed $32 million in letters of credit to support some of our subsidiaries’ insurance arrangements, foreign employee benefit programs, environmental remediation activities and cash management and capital requirements. Financial Instruments — In certain instances, several of our Chinese subsidiaries receive payment from customers through the receipt of financial instruments on the date the customer payments are due. Several of our Chinese subsidiaries also satisfy vendor payments through the delivery of financial instruments on the date the payments are due. Financial instruments issued to satisfy vendor payables and not redeemed totaled $8 million and $12 million at September 30, 2017 and December 31, 2016 , respectively, and were classified as notes payable. Financial instruments received from original equipment (OE) customers and not redeemed totaled $3 million and $5 million at September 30, 2017 and December 31, 2016 , respectively. We classify financial instruments received from our customers as other current assets if issued by a financial institution of our customers or as customer notes and accounts, net if issued by our customer. We classified $3 million and $5 million in other current assets at September 30, 2017 and December 31, 2016 , respectively. The financial instruments received by some of our Chinese subsidiaries are drafts drawn that are payable at a future date and, in some cases, are negotiable and/or are guaranteed by the banks of the customers. The use of these instruments for payment follows local commercial practice. Because certain of such financial instruments are guaranteed by our customers’ banks, we believe they represent a lower financial risk than the outstanding accounts receivable that they satisfy which are not guaranteed by a bank. Supply Chain Financing — Certain of our suppliers participate in supply chain financing programs under which they securitize their accounts receivables from Tenneco. Financial institutions participate in the supply chain financing program on an uncommitted basis and can cease purchasing receivables or drafts from Tenneco's suppliers at any time. If the financial institutions did not continue to purchase receivables or drafts from Tenneco's suppliers under these programs, the participating vendors may have a need to renegotiate their payment terms with Tenneco which in turn would cause our borrowings under our revolving credit facility to increase. Restricted Cash — Some of our Chinese subsidiaries that issue their own financial instruments to pay vendors are required to maintain a cash balance if they exceed credit limits with the financial institution that guarantees the financial instruments. A restricted cash balance was required at those Chinese subsidiaries for $1 million and $2 million at September 30, 2017 and December 31, 2016 , respectively. One of our subsidiaries in Brazil is required by law to maintain a cash deposit with a financial institution to guarantee the maximum estimated loss related to a tax audit until a settlement is reached. The cash deposit required was $1 million which has been classified as restricted cash on the Tenneco Inc. consolidated balance sheet at September 30, 2017 .

Long-Term Debt and Financing Ar

Long-Term Debt and Financing Arrangements	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt and Financing Arrangements	Long-Term Debt and Financing Arrangements Our financing arrangements are primarily provided by a committed senior secured financing arrangement with a syndicate of banks and other financial institutions. The arrangement is secured by substantially all our domestic assets and pledges of up to 66 percent of the stock of certain first-tier foreign subsidiaries, as well as guarantees by our material domestic subsidiaries. On May 12, 2017, we completed a refinancing of our senior credit facility by entering into an amendment and restatement of that facility. The amended and restated credit agreement enhances financial flexibility by increasing the size and extending the term of its revolving credit facility and term loan facility, and by adding Tenneco Automotive Operating Company Inc. as a co-borrower under the revolver credit facility. The amended and restated credit agreement also adds foreign currency borrowing capability and permits the joinder of our foreign and domestic subsidiaries as borrowers under the revolving credit facility in the future. If any foreign subsidiary of Tenneco is added to the revolving credit facility as a borrower, the obligations of such foreign borrower will be secured by the assets of such foreign borrower, and also will be secured by the assets of, and guaranteed by, the domestic borrowers and domestic guarantors as well as certain foreign subsidiaries of Tenneco in the chain of ownership of such foreign borrower. The amended and restated credit facility consists of a $1,600 million revolving credit facility and a $400 million term loan A facility, which replaced our former $1,200 million revolving credit facility and $264 million term loan A facility, respectively. As of September 30, 2017 , the senior credit facility provides us with a total revolving credit facility of $1,600 million and had a $395 million balance outstanding under the term loan A facility, both of which will mature on May 12, 2022 . Net carrying amount for the balance outstanding under the term loan A facility including a $2 million debt issuance cost was $393 million as of September 30, 2017 . Funds may be borrowed, repaid and re-borrowed under the revolving credit facility without premium or penalty (subject to any customary LIBOR breakage fees). The revolving credit facility is reflected as debt on our balance sheet only if we borrow money under this facility or if we use the facility to make payments for letters of credit. Outstanding letters of credit reduce our availability to borrow revolving loans under the facility. We are required to make quarterly principal payments under the term loan A facility of $5 million through June 30, 2019, $7.5 million beginning September 30, 2019 through June 30, 2020, $10 million beginning September 30, 2020 through March 31, 2022 and a final payment of $260 million is due on May 12, 2022. We have excluded the required payments, within the next twelve months, under the term loan A facility totaling $20 million from current liabilities as of September 30, 2017 , because we have the intent and ability to refinance the obligations on a long-term basis by using our revolving credit facility. We recorded $1 million of pre-tax interest charges in May 2017 related to amendment and restatement of the senior credit facility and the write off of deferred debt issuance costs related to the senior credit facility. The financial ratios required under the senior credit facility, and the actual ratios we achieved for the first three quarters of 2017, are as follows: Quarter Ended September 30, 2017 June 30, 2017 March 31, 2017 Required Actual Required Actual Required Actual Leverage Ratio (maximum) 3.50 2.15 3.50 1.97 3.50 1.62 Interest Coverage Ratio (minimum) 2.75 11.48 2.75 12.44 2.75 15.38 The senior credit facility includes a maximum leverage ratio covenant of 3.50 and a minimum interest coverage ratio of 2.75 , in each case through May 12, 2022. The amended and restated senior credit facility provides us with the flexibility not to exclude certain otherwise excludable charges incurred in any relevant period from the calculation of the leverage and interest coverage ratios for such period. At September 30, 2017 , of the $1,600 million available under the revolving credit facility, we had unused borrowing capacity of $1,147 million with $453 million in outstanding borrowings and no outstanding letters of credit. As of September 30, 2017 , our outstanding debt also included (i) $395 million of a term loan which consisted of a $393 million net carrying amount including a $2 million debt issuance cost related to our term loan A facility which is subject to quarterly principal payments as described above through May 12, 2022 , (ii) $225 million of notes which consisted of a $222 million net carrying amount including a $3 million debt issuance cost related to our 5 3 / 8 percent senior notes due December 15, 2024 , (iii) $500 million of notes which consisted of a $492 million net carrying amount including a $8 million debt issuance cost related to our 5 percent senior notes due July 15, 2026 , and (iv) $121 million of other debt.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For interim tax reporting we estimate our annual effective tax rate and apply it to our 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 impact of including these jurisdictions on the quarterly effective rate calculation could result in a higher or lower effective tax rate during a particular quarter due to the mix and timing of actual earnings versus annual projections. The tax effects of certain unusual or infrequently occurring 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. We reported income tax expense of $16 million and income tax benefit of $70 million in the three month periods ended September 30, 2017 and 2016, respectively. The tax expense recorded in the third quarter of 2017 included a net tax benefit of $12 million primarily relating to valuation allowance releases. The tax benefit recorded in the third quarter of 2016 included a net tax benefit of $105 million primarily relating to recognizing a U.S. tax benefit for foreign taxes. During the third quarter of 2016, we completed a detailed analysis of our ability to recognize and utilize foreign tax credits within the carryforward period. As a result, we amended our U.S. federal tax returns for years 2006 to 2012 to claim foreign tax credits in lieu of deducting foreign taxes paid. The U.S. foreign tax credit law provides for a credit against U.S. taxes otherwise payable for foreign taxes paid with regards to dividends, interest and royalties paid to us in the U.S. We reported income tax expense of $41 million and $3 million in the nine month periods ended September 30, 2017 and 2016, respectively. The tax expense recorded in the first nine months of 2017 included a net tax benefit of $12 million primarily relating to valuation allowance releases. In addition, the tax expense included a $50 million reduction related to an antitrust settlement accrual. The tax expense recorded in the first nine months of 2016 included a net tax benefit of $106 million primarily relating to recognizing a U.S. tax benefit for foreign taxes as described above. We believe it is reasonably possible that up to $5 million in unrecognized tax benefits related to the expiration of foreign statute of limitations and the conclusion of income tax examinations may be recognized within the next twelve months.

Accounts Receivable Securitizat

Accounts Receivable Securitization	9 Months Ended
	Sep. 30, 2017
Accounts Receivable Additional Disclosures [Abstract]
Accounts Receivable Securitization	Accounts Receivable Securitization We securitize some of our accounts receivable on a limited recourse basis in the U.S. and Europe. As servicer under these accounts receivable securitization programs, we are responsible for performing all accounts receivable administration functions for these securitized financial assets including collections and processing of customer invoice adjustments. In the U.S., we have an accounts receivable securitization program with three commercial banks comprised of a first priority facility and a second priority facility. We securitize original equipment and aftermarket receivables on a daily basis under the bank program. In April 2017, the U.S. program was amended and extended to April 30, 2019. The first priority facility now provides financing of up to $155 million and the second priority facility, which is subordinated to the first priority facility, now provides up to an additional $25 million of financing. Both facilities monetize accounts receivable generated in the U.S. and Canada that meet certain eligibility requirements, and the second priority facility also monetizes certain accounts receivable generated in the U.S. and Canada that would otherwise be ineligible under the first priority securitization facility. The amount of outstanding third-party investments in our securitized accounts receivable under the U.S. program was $50 million and $30 million at September 30, 2017 and December 31, 2016 , respectively. Each facility contains customary covenants for financings of this type, including restrictions related to liens, payments, mergers or consolidations and amendments to the agreements underlying the receivables pool. Further, each facility may be terminated upon the occurrence of customary events (with customary grace periods, if applicable), including breaches of covenants, failure to maintain certain financial ratios, inaccuracies of representations and warranties, bankruptcy and insolvency events, certain changes in the rate of default or delinquency of the receivables, a change of control and the entry or other enforcement of material judgments. In addition, each facility contains cross-default provisions, where the facility could be terminated in the event of non-payment of other material indebtedness when due and any other event which permits the acceleration of the maturity of material indebtedness. We also securitize receivables in our European operations with regional banks in Europe. The arrangements to securitize receivables in Europe are provided under six separate facilities provided by various financial institutions in each of the foreign jurisdictions. The commitments for these arrangements are generally for one year , but some may be canceled with notice 90 days prior to renewal. In some instances, the arrangement provides for cancellation by the applicable financial institution at any time upon notification. The amount of outstanding third-party investments in our securitized accounts receivable in Europe was $212 million and $160 million at September 30, 2017 and December 31, 2016 , respectively. If we were not able to securitize receivables under either the U.S. or European securitization programs, our borrowings under our revolving credit agreement might increase. These accounts receivable securitization programs provide us with access to cash at costs that are generally favorable to alternative sources of financing, and allow us to reduce borrowings under our revolving credit agreement. In our U.S. accounts receivable securitization program, we transfer a partial interest in a pool of receivables and the interest that we retain is subordinate to the transferred interest. Accordingly, we account for our U.S. securitization program as a secured borrowing. In our European programs, we transfer accounts receivables in their entirety to the acquiring entities and satisfy all of the conditions established under ASC Topic 860, “Transfers and Servicing,” to report the transfer of financial assets in their entirety as a sale. The fair value of assets received as proceeds in exchange for the transfer of accounts receivable under our European securitization programs approximates the fair value of such receivables. We recognized $1 million interest expense in each of the three month periods ended September 30, 2017 and 2016 , and $3 million and $2 million in the nine month periods ended September 30, 2017 and 2016 , respectively, relating to our U.S. securitization program. In addition, we recognized a loss of $2 million in each of the three month periods ended September 30, 2017 and 2016 , and $4 million in each of the nine months periods ended September 30, 2017 and 2016 , on the sale of trade accounts receivable in our European accounts receivable securitization programs, representing the discount from book values at which these receivables were sold to our banks. The discount rate varies based on funding costs incurred by our banks, which averaged approximately one percent and two percent during the first nine months of 2017 and 2016 , respectively.

Restructuring and Other Charges

Restructuring and Other Charges	9 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges Over the past several years, we have adopted plans to restructure portions of our operations. These plans were approved by our Board of Directors and were designed to reduce operational and administrative overhead costs throughout the business. For the full year 2016, we incurred $36 million in restructuring and related costs including asset write-downs of $6 million , primarily related to manufacturing footprint improvements in North America Ride Performance, headcount reduction and cost improvement initiatives in Europe and China Clean Air, South America and Australia, of which $17 million was recorded in cost of sales, $12 million in SG&A, $1 million in engineering expense, $2 million in other expense and $4 million in depreciation and amortization expense. In the third quarter of 2017, we incurred $20 million in restructuring and related costs including asset write-downs of $1 million , primarily related to closing an OE Clean Air manufacturing plant and downsizing Ride Performance operations in Australia and cost improvement initiatives, of which $8 million was recorded in cost of sales, $11 million in SG&A and $1 million in depreciation and amortization expense. In the third quarter of 2016, we incurred $7 million in restructuring and related costs, primarily related to manufacturing footprint improvements in North America Ride Performance as well as headcount reduction and cost improvement initiatives in Europe and China Clean Air, of which $3 million was recorded in cost of sales and $4 million in SG&A. In the first nine months of 2017, we incurred $52 million in restructuring and related costs including asset write-downs of $3 million , primarily related to closing a Clean Air Belgian JIT plant in response to the end of production on a customer platform, closing an OE Clean Air manufacturing plant and downsizing Ride Performance operations in Australia and cost improvement initiatives, of which $31 million was recorded in cost of sales, $18 million in SG&A, and $3 million in depreciation and amortization expense. In the first nine months of 2016, we incurred $26 million in restructuring and related costs including asset write-downs of $5 million primarily related to manufacturing footprint improvements in North America Ride Performance as well as headcount reduction and cost improvement initiatives in Europe and China Clean Air and South America, of which $9 million was recorded in cost of sales, $12 million in SG&A, $2 million in other expense and $3 million in depreciation and amortization expense. Amounts related to activities that are part of our restructuring reserves are as follows: December 31, 2017 2017 Impact of Exchange Rates September 30, 2017 (Millions) Employee Severance, Termination Benefits and Other Related Costs $15 38 (18 ) 2 $37 On June 29, 2017, our Board of Directors approved a restructuring initiative to close our Clean Air manufacturing plant in O'Sullivan Beach, Australia when General Motors and Toyota end vehicle production in the country, which occurred in October 2017. All such restructuring activities related to this initiative are expected to be completed by the first quarter 2018. We recorded total charges related to this initiative of $9 million in the third quarter of 2017 including asset write-downs of $1 million and $21 million in the first nine months of 2017 including asset write-downs of $2 million . The charges included severance payments to employees, the cost of decommissioning equipment, a lease termination payment and other costs associated with this action. Under the terms of our amended and restated senior credit agreement that took effect on May 12, 2017, we are allowed to exclude, at our discretion, (i) up to $35 million in 2017 and $25 million each year thereafter of cash restructuring charges and related expenses, with the ability to carry forward any amount not used in one year to the next following year, and (ii) up to $150 million in the aggregate of all costs, expenses, fees, fines, penalties, judgments, legal settlements and other amounts associated with any restructuring, litigation, claim, proceeding or investigation related to or undertaken by us or any of our subsidiaries, together with any related provision for taxes, incurred for any quarterly period ending after May 12, 2017 in the calculation of the financial covenant ratios required under our senior credit facility. As of September 30, 2017 , we elected not to exclude any of the $181 million of allowable cash charges and related expenses recognized in the first nine months of 2017 for antitrust settlement and restructuring related costs against the $150 million aggregate limit available under the terms of the senior credit facility or the $35 million annual limit for 2017.

Environmental Matters, Litigati

Environmental Matters, Litigation and Product Warranties	9 Months Ended
	Sep. 30, 2017
Environmental Matters, Litigation and Product Warranties [Abstract]
Environmental Matters, Litigation and Product Warranties	Environmental Matters, Legal Proceedings and Product Warranties We are involved in environmental remediation matters, legal proceedings, claims, investigations and warranty obligations. These matters are typically incidental to the conduct of our business and create the potential for contingent losses. We accrue for potential contingent losses when our review of available facts indicates that it is probable a loss has been incurred and the amount of the loss is reasonably estimable. Each quarter we assess our loss contingencies based upon currently available facts, existing technology, presently enacted laws and regulations and taking into consideration the likely effects of inflation and other societal and economic factors and record adjustments to these reserves as required. As an example, we consider all available evidence, including prior experience in remediation of contaminated sites, other companies’ cleanup experiences and data released by the United States Environmental Protection Agency or other organizations when we evaluate our environmental remediation contingencies. All of our loss contingency estimates are subject to revision in future periods based on actual costs or new information. With respect to our environmental liabilities, where future cash flows are fixed or reliably determinable, we have discounted those liabilities. We evaluate recoveries separately from the liability and, when they are assured, recoveries are recorded and reported separately from the associated liability in our consolidated financial statements. Environmental Matters We are subject to a variety of environmental and pollution control laws and regulations in all jurisdictions in which we operate. We expense or capitalize, as appropriate, expenditures for ongoing compliance with environmental regulations that relate to current operations. We expense costs related to an existing condition caused by past operations that do not contribute to current or future revenue generation. As of September 30, 2017 , we have the obligation to remediate or contribute towards the remediation of certain sites, including one Federal Superfund site. At September 30, 2017 , our aggregated estimated share of environmental remediation costs for all these sites on a discounted basis was approximately $14 million , of which $2 million is recorded in other current liabilities and $12 million is recorded in deferred credits and other liabilities in our consolidated balance sheet. For those locations where the liability was discounted, the weighted average discount rate used was 2.3 percent . The undiscounted value of the estimated remediation costs was $17 million . Our expected payments of environmental remediation costs are estimated to be approximately $1 million in 2017, $1 million in each year beginning 2018 through 2021 and $12 million in aggregate thereafter. Based on information known to us, we have established reserves that we believe are adequate for these costs. Although we believe these estimates of remediation costs are reasonable and are based on the latest available information, the costs are estimates and are subject to revision as more information becomes available about the extent of remediation required. At some sites, we expect that other parties will contribute to the remediation costs. In addition, certain environmental statutes provide that our liability could be joint and several, meaning that we could be required to pay in excess of our share of remediation costs. Our understanding of the financial strength of other potentially responsible parties at these sites has been considered, where appropriate, in our determination of our estimated liability. We do not believe that any potential costs associated with our current status as a potentially responsible party in the Federal Superfund site, or as a liable party at the other locations referenced herein, will be material to our consolidated financial position, results of operations, or liquidity. Antitrust Investigations and Litigation On March 25, 2014, representatives of the European Commission were at Tenneco GmbH's Edenkoben, Germany administrative facility to gather information in connection with an ongoing global antitrust investigation concerning multiple automotive suppliers. On March 25, 2014, we also received a related subpoena from the U.S. Department of Justice ("DOJ"). On November 5, 2014, the DOJ granted us conditional leniency pursuant to an agreement we entered into under the Antitrust Division's Corporate Leniency Policy. This agreement provides us with important benefits in exchange for our self-reporting of matters to the DOJ and our continuing full cooperation with the DOJ's resulting investigation. For example, the DOJ will not bring any criminal antitrust prosecution against us, nor seek any criminal fines or penalties, in connection with the matters we reported to the DOJ. Additionally, there are limits on our liability related to any follow-on civil antitrust litigation in the U.S. The limits include single rather than treble damages, as well as relief from joint and several antitrust liability with other relevant civil antitrust action defendants. These limits are subject to our satisfying the DOJ and any court presiding over such follow-on civil litigation. On April 27, 2017, Tenneco received notification from the European Commission (EC) that it has administratively closed its global antitrust inquiry regarding the production, assembly, and supply of complete exhaust systems. No charges against Tenneco or any other competitor were initiated at any time and the EC inquiry is now closed. Certain other competition agencies are also investigating possible violations of antitrust laws relating to products supplied by our company. We have cooperated and continue to cooperate fully with all of these antitrust investigations, and take other actions to minimize our potential exposure. Tenneco and certain of its competitors are also currently defendants in civil putative class action litigation in the United States and Canada. More related lawsuits may be filed, including in other jurisdictions. Plaintiffs in these cases generally allege that defendants have engaged in anticompetitive conduct, in violation of federal and state laws, relating to the sale of automotive exhaust systems or components thereof. Plaintiffs seek to recover, on behalf of themselves and various purported classes of purchasers, injunctive relief, damages and attorneys’ fees. However, as explained above, because we received conditional leniency from the DOJ, our civil liability in the U.S. follow-on actions is limited to single damages and we will not be jointly and severally liable with the other defendants, provided that we have satisfied our obligations under the DOJ leniency agreement and approval is granted by the presiding court. Typically, exposure for follow-on actions in Canada is less than exposure for U.S. follow-on actions. Following the EC’s decision to administratively close its antitrust inquiry into exhaust systems in 2017, Tenneco’s receipt of conditional leniency from the DOJ in 2014 and discussions during the third quarter of 2017 following the appointment of a special settlement master in the civil putative class action cases pending against Tenneco and/or certain of its competitors in the U.S., Tenneco continues to vigorously defend itself and/or take actions to minimize its potential exposure to matters pertaining to the global antitrust investigation, including engaging in settlement discussions when it is in the best interests of the company and its stockholders. For example, in October 2017, Tenneco settled an administrative action brought by Brazil's competition authority for an amount that was not material. Based upon those earlier developments, including settlement discussions, Tenneco established a reserve of $132 million in its second quarter 2017 financial results for settlement costs that are probable, reasonably estimable, and currently expected to be necessary to resolve Tenneco’s antitrust matters globally, which primarily involves the resolution of civil suits and related claims. Of the $132 million reserve that was established, $45 million was paid in the third quarter of 2017 to resolve certain antitrust claims. While Tenneco continues to cooperate with certain competition agencies investigating possible violations of antitrust laws relating to products supplied by Tenneco, and the company may be subject to other civil lawsuits and/or related claims, no amount of this reserve is attributable to matters with the DOJ or the EC, and no such amount is expected based on current information. Rather, Tenneco expects to obtain final leniency from the DOJ in the near future. The above reserve is based upon all currently available information and an assessment of the probability of events for those matters where Tenneco can make a reasonable estimate of the costs to resolve such outstanding matters. Tenneco’s estimate involves significant judgment, given the number, variety and potential outcomes of actual and potential claims, the uncertainty of future rulings and approvals by a court or other authority, the behavior or incentives of adverse parties or regulatory authorities, and other factors outside of the control of Tenneco. As a result, Tenneco’s reserve may change from time to time, and actual costs may vary. Although the ultimate outcome of any legal matter cannot be predicted with certainty, based on current information, we do not expect that any such change in the reserve will have a material adverse impact on our annual consolidated financial position, results of operations or liquidity. Other Legal Proceedings, Claims and Investigations For many years we have been and continue to be subject to lawsuits initiated by claimants alleging health problems as a result of exposure to asbestos. Our current docket of active and inactive cases is less than 500 cases nationwide. A small number of claims have been asserted against one of our subsidiaries by railroad workers alleging exposure to asbestos products in railroad cars. The substantial majority of the remaining claims are related to alleged exposure to asbestos in our automotive products although a significant number of those claims appear also to involve occupational exposures sustained in industries other than automotive. We believe, based on scientific and other evidence, it is unlikely that claimants were exposed to asbestos by our 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, with the number in some cases exceeding 100 defendants from a variety of industries. Additionally, in many cases the plaintiffs either do not specify any, or specify the jurisdictional minimum, dollar amount for damages. As major asbestos manufacturers and/or users continue to go out of business or file for bankruptcy, we may experience an increased number of these claims. We vigorously defend ourselves against these claims as part of our ordinary course of business. In future periods, we could be subject to cash costs or charges to earnings if any of these matters are resolved unfavorably to us. To date, with respect to claims that have proceeded sufficiently through the judicial process, we have regularly achieved favorable resolutions. Accordingly, we presently believe that these asbestos-related claims will not have a material adverse impact on our future consolidated financial position, results of operations or liquidity. We are also from time to time involved in other legal proceedings, claims or investigations. Some of these matters involve allegations of damages against us 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, and commercial or contractual disputes, sometimes related to acquisitions or divestitures. Additionally, some of these matters involve allegations relating to legal compliance. For example, in July 2017 a complaint was filed against us in federal district court in Chicago, Illinois alleging that we misappropriated a third party's trade secrets in connection with certain of our ride control products. While we vigorously defend ourselves against all of these legal proceedings, claims and investigations and take other actions to minimize our potential exposure, in future periods, we 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 our assessment of the merits of the particular claim, except as described above under "Antitrust Investigations" and in this paragraph we do not expect the legal proceedings, claims or investigations currently pending against us will have any material adverse impact on our consolidated financial position, results of operations or liquidity. With respect to the trade secret claim described above, we are in the process of evaluating the claim but, at this stage of the case and given the inherent uncertainly of litigation, we are unable to estimate whether a loss is reasonably possible. While we do not believe that this litigation will have a material adverse effect on our annual consolidated financial position, results of operations or liquidity, we cannot assure you that this will be the case. Warranty Matters We provide warranties on some of our products. The warranty terms vary but range from one year up to limited lifetime warranties on some of our 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 our products. These estimates are established using historical information about the nature, frequency, and average cost of warranty claims. We actively study trends of our warranty claims and take action to improve product quality and minimize warranty claims. We believe that 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 balance sheet. Below is a table that shows the activity in the warranty accrual accounts: Nine Months Ended September 30, 2017 2016 (Millions) Beginning Balance January 1, $ 20 $ 23 Accruals related to product warranties 13 6 Reductions for payments made (8 ) (10 ) Ending Balance September 30, $ 25 $ 19

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Earnings per share of common stock outstanding were computed as follows: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 (Millions Except Share and Per Share Amounts) Basic earnings per share — Net income attributable to Tenneco Inc. $ 83 $ 179 $ 139 $ 318 Weighted Average shares of common stock outstanding 52,508,078 55,679,969 53,265,149 56,511,838 Earnings per share of common stock $ 1.57 $ 3.22 $ 2.61 $ 5.63 Diluted earnings per share — Net income attributable to Tenneco Inc. $ 83 $ 179 $ 139 $ 318 Weighted Average shares of common stock outstanding 52,508,078 55,679,969 53,265,149 56,511,838 Effect of dilutive securities: Restricted stock 89,666 207,707 106,320 144,145 Stock options 89,912 278,033 130,395 302,464 Weighted Average shares of common stock outstanding including dilutive securities 52,687,656 56,165,709 53,501,864 56,958,447 Earnings per share of common stock $ 1.57 $ 3.19 $ 2.60 $ 5.58 Options to purchase 834 and 171,580 shares of common stock were outstanding as of September 30, 2017 and 2016, respectively, but not included in the computation of diluted earnings per share respectively, because the options were anti-dilutive.

Common Stock

Common Stock	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Common Stock	Common Stock Equity Plans — We have granted a variety of awards, including common stock, restricted stock, restricted stock units, performance units, stock appreciation rights (“SARs”), and stock options to our directors, officers, and employees. Accounting Methods — We recorded compensation expense (net of taxes) of less than $1 million in each of the three month periods ended September 30, 2017 and 2016, less than $1 million in compensation expense for the nine month period ended September 30, 2017 and $1 million for the nine month period ended September 30, 2016 related to nonqualified stock options as part of our selling, general and administrative expense. This had no impact on basic or diluted earnings per share for each of the three month periods ended September 30, 2017 and 2016 and a decrease of less than $0.01 and $0.01 in both basic and diluted earnings per share for the nine month periods ended September 30, 2017 and 2016. For employees eligible to retire at grant date, we immediately expense stock options and restricted stock. If an employee becomes retiree eligible during the vesting period, we amortize the expense for stock options and restricted stock over a period starting at the grant date to the date an employee becomes retiree eligible. As of September 30, 2017 , there was no unrecognized compensation cost related to our stock option awards. Compensation expense for restricted stock, restricted stock units, long-term performance units and SARs (net of taxes) was $2 million and $5 million for the three month periods ended September 30, 2017 and 2016, respectively, and $10 million and $14 million for the nine month periods ended September 30, 2017 and 2016, respectively, and was recorded in selling, general, and administrative expense in our condensed consolidated statements of income. Cash received from stock option exercises for the nine month periods ended September 30, 2017 and 2016 was $7 million and $4 million , respectively. Stock options exercised in the first nine months of 2017 and 2016 generated a tax benefit of $2 million and $1 million , respectively. Stock Options — The following table reflects the status and activity for all options to purchase common stock for the period indicated: Nine Months Ended September 30, 2017 Shares Under Option Weighted Avg. Exercise Prices Weighted Avg. Remaining Life in Years Aggregate Intrinsic Value (Millions) Outstanding Stock Options Outstanding, January 1, 2017 606,525 $ 38.54 2.6 $ 12 Canceled (2,214 ) 56.23 — Forfeited (1,107 ) 56.23 — Exercised (164,863 ) 33.70 5 Outstanding, March 31, 2017 438,341 $ 40.22 2.6 $ 11 Forfeited (278 ) 66.54 — Exercised (3,242 ) 45.42 — Outstanding, June 30, 2017 434,821 $ 40.16 2.4 $ 8 Forfeited (41,369 ) 19.53 — Exercised (50,125 ) 34.79 1 Outstanding, September 30, 2017 343,327 $ 43.44 2.4 $ 4 There have been no stock options granted since 2015. The total fair value of shares vested from options that were granted prior to 2015 was $2 million and $4 million for the periods ended September 30, 2017 and 2016, respectively. Restricted Stock — The following table reflects the status for all nonvested restricted shares for the period indicated: Nine Months Ended September 30, 2017 Shares Weighted Avg. Grant Date Fair Value Nonvested Restricted Shares Nonvested balance at January 1, 2017 591,416 $ 44.63 Granted 182,543 68.04 Vested (261,003 ) 50.95 Forfeited (65,354 ) 53.12 Nonvested balance at March 31, 2017 447,602 $ 49.25 Granted 23,295 57.22 Vested (15,336 ) 46.77 Forfeited (6,271 ) 48.10 Nonvested balance at June 30, 2017 449,290 $ 49.79 Granted 2,001 55.80 Vested (4,581 ) 55.52 Forfeited (10,234 ) 44.82 Nonvested balance at September 30, 2017 436,476 $ 49.87 The fair value of restricted stock grants is usually equal to the average of the high and low trading price of our stock on the date of grant. As of September 30, 2017 , approximately $10 million of total unrecognized compensation costs related to restricted stock awards is expected to be recognized over a weighted-average period of approximately 1.9 years. The total fair value of restricted shares vested was $14 million and $9 million at September 30, 2017 and 2016, respectively. Share Repurchase Program — In January 2015, our Board of Directors approved a share repurchase program, authorizing our company to repurchase up to $350 million of our outstanding common stock over a three year period. In October 2015, our Board of Directors expanded this share repurchase program, authorizing the repurchase of an additional $200 million of the Company's outstanding common stock. In February 2017, our Board of Directors authorized the repurchase of up to $400 million of the Company's outstanding common stock over the next three years. This includes $112 million that remained authorized under earlier repurchase programs. The Company anticipates acquiring the shares through open market or privately negotiated transactions, which will be funded through cash from operations. The repurchase program does not obligate the Company to repurchase shares within any specific time or situations, and opportunities in higher priority areas could affect the cadence of this program. We repurchased 2.3 million shares for $131 million through this program in the nine months ended September 30, 2017 . Since we announced the share repurchase program in January 2015, we have repurchased 10.7 million shares for $569 million through September 30, 2017 . Treasury stock shares including repurchased shares were 13,966,381 and 11,655,938 shares at September 30, 2017 and December 31, 2016 , respectively. Dividends — On February 1, 2017, Tenneco announced the reinstatement of a quarterly dividend program. We expect to pay a quarterly dividend of $0.25 per share on our common stock, representing a planned annual dividend of $1.00 per share. In March 2017, we paid an initial quarterly dividend of $0.25 per share, or $13 million . In June 2017, we paid a quarterly dividend of $ 0.25 per share, or $13 million . In September 2017, we paid a quarterly dividend of $0.25 per share, or $14 million . While we currently expect that comparable quarterly cash dividends will continue to be paid in the future, our dividend program and the payment of future cash dividends under the program are subject to continued capital availability, the judgment of our Board of Directors and our continued compliance with the provisions pertaining to the payment of dividends under our debt agreements. Long-Term Performance Units, Restricted Stock Units and SARs — Long-term performance units, restricted stock units and SARs are paid in cash and recognized as a liability based upon their fair value. As of September 30, 2017 , $19 million of total unrecognized compensation costs is expected to be recognized over a weighted-average period of approximately 1.9 years.

Pension Plans, Postretirement a

Pension Plans, Postretirement and Other Employee Benefits	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Pension Plans, Postretirement and Other Employee Benefits	ension Plans, Postretirement and Other Employee Benefits Net periodic pension costs and postretirement benefit costs consist of the following components: Three Months Ended September 30, Pension Postretirement 2017 2016 2017 2016 US Foreign US Foreign US US (Millions) Service cost — benefits earned during the period $ 1 $ 3 $ 1 $ 2 $ — $ — Interest cost 2 4 4 4 1 1 Expected return on plan assets (4 ) (4 ) (6 ) (5 ) — — Net amortization: Actuarial loss 1 1 2 1 2 2 Prior service cost (credit) — 1 — 1 — (1 ) Net pension and postretirement costs $ — $ 5 $ 1 $ 3 $ 3 $ 2 Nine Months Ended September 30, Pension Postretirement 2017 2016 2017 2016 US Foreign US Foreign US US (Millions) Service cost — benefits earned during the period $ 1 $ 7 $ 1 $ 6 $ — $ — Interest cost 7 10 13 11 4 4 Expected return on plan assets (11 ) (19 ) (18 ) (15 ) — — Settlement loss 6 — — — — — Net amortization: Actuarial loss 4 6 6 5 5 4 Prior service cost (credit) — 1 — 1 (1 ) (1 ) Net pension and postretirement costs $ 7 $ 5 $ 2 $ 8 $ 8 $ 7 For the nine months ended September 30, 2017 , we made pension contributions of $12 million and $10 million for our domestic and foreign pension plans, respectively. Based on current actuarial estimates, we believe we will be required to contribute approximately $10 million for the remainder of 2017 . Pension contributions beyond 2017 will be required, but those amounts will vary based upon many factors including, for example, the performance of our pension fund investments during 2017 . In February 2016, the Company launched a voluntary program to buy out active employees and retirees who had earned benefits in the U.S. pension plans. As of June 30, 2017, this program has been substantially completed and all cash payments have been made from pension plan assets to those who elected to take the buyout. In connection with this program the Company contributed $10 million into the pension trust and recognized a non-cash charge of $6 million in the first quarter of 2017. We made postretirement contributions of approximately $8 million during the first nine months of 2017 . Based on current actuarial estimates, we believe we will be required to contribute approximately $2 million for the remainder of 2017 . The assets of some of our pension plans are invested in trusts that permit commingling of the assets of more than one employee benefit plan for investment and administrative purposes. Each of the plans participating in the trust has interests in the net assets of the underlying investment pools of the trusts. The investments for all our pension plans are recorded at estimated fair value, in compliance with the accounting guidance on fair value measurement. Amounts recognized for pension and postretirement benefits in other comprehensive income for the three and nine months ended September 30, 2017 and 2016 include the following components: Three Months Ended September 30, 2017 2016 Before-Tax Amount Tax Benefit Net-of-Tax Amount Before- Tax Amount Tax Benefit Net-of-Tax Amount (Millions) Defined benefit pension and postretirement plans: Amortization of prior service cost included in net periodic pension and postretirement cost $ 1 $ — $ 1 $ — $ — $ — Amortization of actuarial loss included in net periodic pension and postretirement cost 4 (2 ) 2 5 (1 ) 4 Other comprehensive income – pension benefits $ 5 $ (2 ) $ 3 $ 5 $ (1 ) $ 4 Nine Months Ended September 30, 2017 2016 Before-Tax Tax Benefit Net-of-Tax Before- Tax Benefit Net-of-Tax (Millions) Defined benefit pension and postretirement plans: Amortization of actuarial loss included in net periodic pension and postretirement cost $ 15 $ (5 ) $ 10 $ 15 $ (4 ) $ 11 Settlement charge 6 (2 ) 4 — — — Other comprehensive income – pension benefits $ 21 $ (7 ) $ 14 $ 15 $ (4 ) $ 11

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The new guidance improves the presentation of net periodic pension cost and net period postretirement benefit cost. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In November 2016, the FASB issued Accounting Standard Update 2016-18, Statement of Cash Flows - Restricted Cash (Topic 230) to eliminate diversity in practice in the presentation of restricted cash and restricted cash equivalents in the statement of cash flows. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In October 2016, the FASB issued Accounting Standard Update 2016-16, Income Taxes - Intra Entity Transfers of Assets Other Than Inventory (Topic 740). The new standard changes the accounting for income taxes when a company transfers certain tangible and intangible assets, such as equipment or intellectual property, between entities in different tax jurisdictions. The new standard does not change the current accounting for the income taxes related to transfers of inventory. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In March 2016, the FASB issued Accounting Standard Update 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, as part of its initiative to reduce complexity in accounting standards. The areas for simplification in this update involve several aspects of the accounting for employee share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. We adopted this standard for the first quarter of 2017. The impact of the adoption resulted in the following: • We recorded a tax benefit of $2 million within income tax expense for the nine months ended September 30, 2017 related to the excess tax benefit on share-based awards. Prior to adoption, this amount would have been recorded as an addition of additional paid-in capital. • We no longer reclassify the excess tax benefit from operating activities to financing activities in the statement of cash flows. Cash payments made to the taxing authorities on employees' behalf for withheld shares are presented as financing activities. Tenneco elected to apply this change in presentation retrospectively and thus prior periods have been adjusted. • We excluded the excess tax benefits from the assumed proceeds available to repurchase shares in the computation of our diluted earnings per share for the quarter ended September 30, 2017 . The impact was not material. In February 2016, the FASB issued Accounting Standard Update 2016-02, Leases (Topic 842). The amendments in this update create Topic 842, Leases, and supersede the leases requirements in Topic 840, Leases. The objective of Topic 842 is to establish the principles that lessees and lessors shall apply to report useful information to users of financial statements about the amount, timing, and uncertainty of cash flow arising from a lease. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2018, and interim periods within those annual periods. We will adopt this amendment on January 1, 2019. We are currently evaluating the potential impact of this new guidance on our consolidated financial statements. In May 2014, the FASB issued an amendment on revenue recognition. The amendment in this update creates Topic 606, Revenue from Contracts with Customers, and supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, including most industry-specific revenue recognition guidance throughout the Industry Topics of the Codification. In addition, the amendment supersedes the cost guidance in Subtopic 605-35, Revenue Recognition-Construction-Type and Production-Type Contracts, and creates new Subtopic 340-40, Other Assets and Deferred Costs-Contracts with Customers. The core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The FASB approved a one-year deferral of the effective date from January 1, 2017 to January 1, 2018, while allowing for early adoption as of January 1, 2017 for public entities. We will adopt this amendment on January 1, 2018. The guidance permits the use of either the retrospective or modified retrospective (cumulative effect) transition method. We will adopt the guidance effective January 1, 2018 using the modified retrospective method by recognizing the cumulative effect in equity at the date of initial application. We have established a cross-functional coordinated team to implement the guidance related to the recognition of revenue from contracts with customers. We are in the process of assessing our customer contracts, identifying contractual provisions that may result in a change in the timing or the amount of revenue recognized in comparison with current guidance, as well as assessing the enhanced disclosure requirements of the new guidance. Under current guidance, we generally recognize revenue when products are shipped and risk of loss has transferred to the customer. Under the new requirements, the customized nature of some of our products combined with contractual provisions that provide us with an enforceable right to payment will require us to recognize revenue over time during production. Our findings to date indicate only a small number of our customers provide an enforceable right to payment and therefore would be recognized over time. We evaluated how the new guidance may affect our accounting for contractually guaranteed reimbursements related to customer tooling, engineering services and pre-production costs. Under the current applicable guidance, these customer reimbursements are recorded as cost recovery offsets; whereas under the new standard these guaranteed recoveries may represent consideration from contracts with customers and be recorded as revenues. Our findings to date indicate these reimbursements are outside the scope of the new accounting standard and thus accounting for such reimbursements is not expected to be impacted. In addition, we are assessing pricing provisions contained in certain of our customer contracts. Certain price adjustments if they are determined to represent an option to purchase additional product at a reduced price could grant a material right to the customer and require a deferral of revenue. While Tenneco pricing provisions contained in customer contracts are generally reflective of market conditions and customary industry pricing practices, some may provide the customer with a material right. Based on our evaluation to date, no pricing provisions have been considered to represent a material right.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information In connection with the reportable segment changes announced on February 7, 2017, our Clean Air and Ride Performance product lines in India, which have been reported as part of Europe, South America and India segments, will now be reported with their respective product lines in the Asia Pacific segments. Beginning with the first quarter of 2017, we are organized and manage our business along our two major product lines (clean air and ride performance) and three geographic areas (North America; Europe and South America; Asia Pacific), resulting in six operating segments (North America Clean Air, North America Ride Performance, Europe and South America Clean Air, Europe and South America Ride Performance, Asia Pacific Clean Air and Asia Pacific Ride Performance). Within each geographical area, each operating segment manufactures and distributes either clean air or ride performance products primarily for the original equipment and aftermarket industries. Each of the six operating segments constitutes a reportable segment. Costs related to other business activities, primarily corporate headquarter functions, are disclosed separately from the six operating segments as "Other." We evaluate segment performance based primarily on earnings before interest expense, income taxes, and noncontrolling interests. Products are transferred between segments and geographic areas on a basis intended to reflect as nearly as possible the “market value” of the products. Prior period segment information has been revised to reflect our new reporting segments. The following table summarizes certain Tenneco Inc. segment information: Clean Air Division Ride Performance Division North America Europe & South America Asia Pacific North America Europe & South America Asia Pacific Other Reclass & Elims Total (Millions) At September 30, 2017 and for the Three Months Ended September 30, 2017 Revenues from external customers $ 723 $ 536 $ 313 $ 304 $ 279 $ 119 $ — $ — $ 2,274 Intersegment revenues 5 7 — 2 6 16 — (36 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 46 25 36 29 6 11 (19 ) — 134 Total assets 1,504 882 751 761 590 388 — 59 4,935 At September 30, 2016 and for the Three Months Ended September 30, 2016 Revenues from external customers 716 474 270 306 229 101 — — 2,096 Intersegment revenues 4 24 1 2 6 12 — (49 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 42 29 39 37 8 17 (22 ) — 150 Total assets 1,390 810 625 727 478 333 — 47 4,410 At September 30, 2017 and for the Nine Months Ended September 30, 2017 Revenues from external customers $ 2,341 $ 1,620 $ 861 $ 945 $ 786 $ 330 $ — $ — $ 6,883 Intersegment revenues 13 38 3 8 23 44 — (129 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 153 79 91 100 19 45 (205 ) — 282 Total assets 1,504 882 751 761 590 388 — 59 4,935 At September 30, 2016 and for the Nine Months Ended September 30, 2016 Revenues from external customers 2,252 1,462 813 952 689 276 — — 6,444 Intersegment revenues 9 71 2 6 21 37 — (146 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 168 72 110 127 12 43 (87 ) — 445 Total assets 1,390 810 625 727 478 333 — 47 4,410

Supplemental Guarantor Condense

Supplemental Guarantor Condensed Consolidating Financial Statements	9 Months Ended
	Sep. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Supplemental Guarantor Condensed Consolidating Financial Statements	Supplemental Guarantor Condensed Consolidating Financial Statements Basis of Presentation Substantially all of our existing and future material domestic 100% owned subsidiaries (which are referred to as the Guarantor Subsidiaries) fully and unconditionally guarantee our senior notes due in 2024 and 2026 on a joint and several basis. However, a subsidiary’s guarantee may be released in certain customary circumstances such as a sale of the subsidiary or all or substantially all of its assets in accordance with the indenture applicable to the notes. The Guarantor Subsidiaries are combined in the presentation below. These consolidating financial statements are presented on the equity method. Under this method, our investments are recorded at cost and adjusted for our ownership share of a subsidiary’s cumulative results of operations, capital contributions and distributions, and other equity changes. You should read the condensed consolidating financial information of the Guarantor Subsidiaries in connection with our condensed consolidated financial statements and related notes of which this note is an integral part. The accompanying supplemental guarantor condensed consolidating financial statements have been updated to reflect the revision as described in Note 14. Distributions There are no significant restrictions on the ability of the Guarantor Subsidiaries to make distributions to us. STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended September 30, 2017 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Revenues Net sales and operating revenues — External $ 917 $ 1,357 $ — $ — $ 2,274 Affiliated companies 128 143 — (271 ) — 1,045 1,500 — (271 ) 2,274 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 889 1,295 — (271 ) 1,913 Engineering, research, and development 17 23 — — 40 Selling, general, and administrative 51 77 — — 128 Depreciation and amortization of other intangibles 23 35 — — 58 980 1,430 — (271 ) 2,139 Other income (expense) Loss on sale of receivables (1 ) (1 ) — — (2 ) Other income (expense) (9 ) 10 — — 1 (10 ) 9 — — (1 ) Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 55 79 — — 134 Interest expense — External (net of interest capitalized) 7 2 10 — 19 Affiliated companies (net of interest income) (5 ) 3 2 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 53 74 (12 ) — 115 Income tax (benefit) expense (5 ) 21 — — 16 Equity in net income (loss) from affiliated companies 31 — 95 (126 ) — Net income (loss) 89 53 83 (126 ) 99 Less: Net income attributable to noncontrolling interests — 16 — — 16 Net income (loss) attributable to Tenneco Inc. $ 89 $ 37 $ 83 $ (126 ) $ 83 Comprehensive income (loss) attributable to Tenneco Inc. $ 89 $ 31 $ 114 $ (120 ) $ 114 STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended September 30, 2016 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Revenues Net sales and operating revenues — External $ 928 $ 1,168 $ — $ — $ 2,096 Affiliated companies 134 183 — (317 ) — 1,062 1,351 — (317 ) 2,096 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 904 1,156 — (317 ) 1,743 Engineering, research, and development 20 21 — — 41 Selling, general, and administrative 48 61 — — 109 Depreciation and amortization of other intangibles 23 30 — — 53 995 1,268 — (317 ) 1,946 Other income (expense) Loss on sale of receivables (1 ) (1 ) — — (2 ) Other income (expense) (7 ) 9 — — 2 (8 ) 8 — — — Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 59 91 — — 150 Interest expense — External (net of interest capitalized) (1 ) 1 24 — 24 Affiliated companies (net of interest income) (3 ) 2 1 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 63 88 (25 ) — 126 Income tax expense (108 ) 38 — — (70 ) Equity in net income (loss) from affiliated companies 33 — 204 (237 ) — Net income (loss) 204 50 179 (237 ) 196 Less: Net income attributable to noncontrolling interests — 17 — — 17 Net income (loss) attributable to Tenneco Inc. $ 204 $ 33 $ 179 $ (237 ) $ 179 Comprehensive income (loss) attributable to Tenneco Inc. $ 204 $ 33 $ 184 $ (237 ) $ 184 STATEMENT OF COMPREHENSIVE INCOME (LOSS) Nine Months Ended September 30, 2017 Guarantor Nonguarantor Tenneco Inc. Reclass & Consolidated (Millions) Revenues Net sales and operating revenues — External $ 2,958 $ 3,925 $ — $ — $ 6,883 Affiliated companies 413 497 — (910 ) — 3,371 4,422 — (910 ) 6,883 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 2,871 3,829 — (910 ) 5,790 Engineering, research, and development 56 59 — — 115 Selling, general, and administrative 310 219 — — 529 Depreciation and amortization of other intangibles 65 100 — — 165 3,302 4,207 — (910 ) 6,599 Other income (expense) Loss on sale of receivables (2 ) (2 ) — — (4 ) Other income (expense) (9 ) 26 — (15 ) 2 (11 ) 24 — (15 ) (2 ) Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 58 239 — (15 ) 282 Interest expense — External (net of interest capitalized) 10 4 40 — 54 Affiliated companies (net of interest income) (12 ) 6 6 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 60 229 (46 ) (15 ) 228 Income tax expense 6 35 — — 41 Equity in net income (loss) from affiliated companies 119 — 185 (304 ) — Net income (loss) 173 194 139 (319 ) 187 Less: Net income attributable to noncontrolling interests — 48 — — 48 Net income attributable to Tenneco Inc. $ 173 $ 146 $ 139 $ (319 ) $ 139 Comprehensive income (loss) attributable to Tenneco Inc. $ 173 $ 140 $ 234 $ (313 ) $ 234 STATEMENT OF COMPREHENSIVE INCOME (LOSS) Nine Months Ended September 30, 2016 Guarantor Nonguarantor Tenneco Inc. Reclass & Consolidated (Millions) Revenues Net sales and operating revenues — External $ 2,929 $ 3,515 $ — $ — $ 6,444 Affiliated companies 389 569 — (958 ) — 3,318 4,084 — (958 ) 6,444 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 2,800 3,487 — (958 ) 5,329 Engineering, research, and development 59 58 — — 117 Selling, general, and administrative 174 215 1 — 390 Depreciation and amortization of other intangibles 65 94 — — 159 3,098 3,854 1 (958 ) 5,995 Other income (expense) Loss on sale of receivables (2 ) (2 ) — — (4 ) Other income (expense) (6 ) 21 — (15 ) — (8 ) 19 — (15 ) (4 ) Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 212 249 (1 ) (15 ) 445 Interest expense — External (net of interest capitalized) (1 ) 3 74 — 76 Affiliated companies (net of interest income) (9 ) 6 3 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 222 240 (78 ) (15 ) 369 Income tax expense (71 ) 74 — — 3 Equity in net income (loss) from affiliated companies 118 — 396 (514 ) — Net income (loss) 411 166 318 (529 ) 366 Less: Net income attributable to noncontrolling interests — 48 — — 48 Net income (loss) attributable to Tenneco Inc. $ 411 $ 118 $ 318 $ (529 ) $ 318 Comprehensive income (loss) attributable to Tenneco Inc. $ 411 $ 118 $ 333 $ (529 ) $ 333 BALANCE SHEET September 30, 2017 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) ASSETS Current assets: Cash and cash equivalents $ 4 $ 273 $ — $ — $ 277 Restricted cash — 2 — — 2 Receivables, net 619 1,578 — (722 ) 1,475 Inventories 394 488 — — 882 Prepayments and other 104 221 — — 325 Total current assets 1,121 2,562 — (722 ) 2,961 Other assets: Investment in affiliated companies 1,256 — 1,517 (2,773 ) — Notes and advances receivable from affiliates 968 18,572 4,010 (23,550 ) — Long-term receivables, net 8 1 — — 9 Goodwill 22 37 — — 59 Intangibles, net 6 11 — — 17 Deferred income taxes 101 36 88 — 225 Other 62 61 — — 123 2,423 18,718 5,615 (26,323 ) 433 Plant, property, and equipment, at cost 1,463 2,504 — — 3,967 Less — Accumulated depreciation and amortization (937 ) (1,489 ) — — (2,426 ) 526 1,015 — — 1,541 Total assets $ 4,070 $ 22,295 $ 5,615 $ (27,045 ) $ 4,935 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt (including current maturities of long-term debt) Short-term debt — non-affiliated $ — $ 93 $ 15 $ — $ 108 Short-term debt — affiliated 398 151 — (549 ) — Accounts payable 594 1,098 — (91 ) 1,601 Accrued taxes 45 1 — — 46 Other 224 326 9 (82 ) 477 Total current liabilities 1,261 1,669 24 (722 ) 2,232 Long-term debt — non-affiliated 846 13 714 — 1,573 Long-term debt — affiliated 706 18,614 4,230 (23,550 ) — Deferred income taxes — 6 — — 6 Postretirement benefits and other liabilities 275 131 — — 406 Commitments and contingencies Total liabilities 3,088 20,433 4,968 (24,272 ) 4,217 Redeemable noncontrolling interests — 32 — — 32 Tenneco Inc. shareholders’ equity 982 1,791 647 (2,773 ) 647 Noncontrolling interests — 39 — — 39 Total equity 982 1,830 647 (2,773 ) 686 Total liabilities, redeemable noncontrolling interests and equity $ 4,070 $ 22,295 $ 5,615 $ (27,045 ) $ 4,935 BALANCE SHEET December 31, 2016 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) ASSETS Current assets: Cash and cash equivalents $ 9 $ 338 $ — $ — $ 347 Restricted cash — 2 — — 2 Receivables, net 386 1,412 — (504 ) 1,294 Inventories 361 369 — — 730 Prepayments and other 62 167 — — 229 Total current assets 818 2,288 — (504 ) 2,602 Other assets: Investment in affiliated companies 1,213 — 1,207 (2,420 ) — Notes and advances receivable from affiliates 939 16,529 4,781 (22,249 ) — Long-term receivables, net 9 — — — 9 Goodwill 22 35 — — 57 Intangibles, net 7 12 — — 19 Deferred income taxes 47 23 129 — 199 Other 46 49 8 — 103 2,283 16,648 6,125 (24,669 ) 387 Plant, property, and equipment, at cost 1,371 2,177 — — 3,548 Less — Accumulated depreciation and amortization (895 ) (1,296 ) — — (2,191 ) 476 881 — — 1,357 Total assets $ 3,577 $ 19,817 $ 6,125 $ (25,173 ) $ 4,346 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt (including current maturities of long-term debt) Short-term debt — non-affiliated $ — $ 75 $ 15 $ — $ 90 Short-term debt — affiliated 167 187 — (354 ) — Accounts payable 562 1,027 — (88 ) 1,501 Accrued taxes 4 35 — — 39 Other 147 243 15 (62 ) 343 Total current liabilities 880 1,567 30 (504 ) 1,973 Long-term debt — non-affiliated — 12 1,282 — 1,294 Long-term debt — affiliated 1,543 16,466 4,240 (22,249 ) — Deferred income taxes — 7 — — 7 Postretirement benefits and other liabilities 297 115 — — 412 Commitments and contingencies Total liabilities 2,720 18,167 5,552 (22,753 ) 3,686 Redeemable noncontrolling interests — 40 — — 40 Tenneco Inc. shareholders’ equity 857 1,563 573 (2,420 ) 573 Noncontrolling interests — 47 — — 47 Total equity 857 1,610 573 (2,420 ) 620 Total liabilities, redeemable noncontrolling interests and equity $ 3,577 $ 19,817 $ 6,125 $ (25,173 ) $ 4,346 STATEMENT OF CASH FLOWS Three Months Ended September 30, 2017 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 39 $ 26 $ (8 ) $ (4 ) $ 53 Investing Activities Cash payments for plant, property, and equipment (29 ) (61 ) — — (90 ) Cash payments for software related intangible assets (4 ) (1 ) — — (5 ) Other (1 ) — — — (1 ) Net cash used by investing activities (34 ) (62 ) — — (96 ) Financing Activities Issuance of common shares — — 1 — 1 Cash dividends — — (14 ) — (14 ) Retirement of long-term debt - net — (1 ) — — (1 ) Purchase of common stock under the share repurchase program — — (71 ) — (71 ) Net increase in bank overdrafts — (3 ) — — (3 ) Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt 82 2 — — 84 Intercompany dividend payments and net increase (decrease) in intercompany obligations (87 ) (9 ) 92 4 — Distributions to noncontrolling interest partners — (12 ) — — (12 ) Net cash provided (used) by financing activities (5 ) (23 ) 8 4 (16 ) Effect of foreign exchange rate changes on cash and cash equivalents — 3 — — 3 Decrease in cash and cash equivalents — (56 ) — — (56 ) Cash and cash equivalents, July 1 4 329 — — 333 Cash and cash equivalents, September 30 (Note) $ 4 $ 273 $ — $ — $ 277 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase. STATEMENT OF CASH FLOWS Three Months Ended September 30, 2016 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 170 $ (17 ) $ (19 ) $ (4 ) $ 130 Investing Activities Proceeds from sale of assets 1 — — — 1 Cash payments for plant, property, and equipment (29 ) (45 ) — — (74 ) Cash payments for software related intangible assets (6 ) — — — (6 ) Changes in restricted cash — 1 — — 1 Net cash used by investing activities (34 ) (44 ) — — (78 ) Financing Activities Issuance of common shares — — 5 — 5 Retirement of long-term debt - net — — (179 ) — (179 ) Issuance of long-term debt - net — 2 — — 2 Purchase of common stock under the share repurchase program — — (89 ) — (89 ) Net decrease in bank overdrafts — (1 ) — — (1 ) Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivables — 46 152 — 198 Net decrease in short-term borrowings secured by accounts receivable — — 50 — 50 Intercompany dividend payments and net increase (decrease) in intercompany obligations (137 ) 54 79 4 — Distributions to noncontrolling interest partners — (28 ) — — (28 ) Net cash provided (used) by financing activities (137 ) 73 18 4 (42 ) Effect of foreign exchange rate changes on cash and cash equivalents (1 ) 3 1 — 3 Increase (decrease) in cash and cash equivalents (2 ) 15 — — 13 Cash and cash equivalents, July 1 2 309 — — 311 Cash and cash equivalents, September 30 (Note) $ — $ 324 $ — $ — $ 324 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase. STATEMENT OF CASH FLOWS Nine Months Ended September 30, 2017 Guarantor Nonguarantor Tenneco Inc. Reclass Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 102 $ 101 $ (29 ) $ (11 ) $ 163 Investing Activities Proceeds from sale of equity interest — 9 — — 9 Proceeds from sale of assets 3 3 — — 6 Cash payments for plant, property, and equipment (110 ) (173 ) — — (283 ) Cash payments for software related intangible assets (10 ) (7 ) — — (17 ) Other (5 ) — — — (5 ) Net cash used by investing activities (122 ) (168 ) — — (290 ) Financing Activities Repurchase of common shares — — (2 ) — (2 ) Cash dividends — — (40 ) — (40 ) Retirement of long-term debt - net — (3 ) (6 ) — (9 ) Issuance of long-term debt - net 400 — (264 ) — 136 Debt issuance cost of long-term debt (8 ) — — — (8 ) Purchase of common stock under the share repurchase program — — (131 ) — (131 ) Net decrease in bank overdrafts — (12 ) — — (12 ) Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivables 451 16 (323 ) — 144 Net increase in short-term borrowings secured by accounts receivables — — 20 — 20 Intercompany dividend payments and net increase (decrease) in intercompany obligations (828 ) 42 775 11 — Distributions to noncontrolling interest partners — (45 ) — — (45 ) Net cash provided by financing activities 15 (2 ) 29 11 53 Effect of foreign exchange rate changes on cash and cash equivalents — 4 — — 4 Decrease in cash and cash equivalents (5 ) (65 ) — — (70 ) Cash and cash equivalents, January 1 9 338 — — 347 Cash and cash equivalents, June 30 (Note) $ 4 $ 273 $ — $ — $ 277 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase. STATEMENT OF CASH FLOWS Nine Months Ended September 30, 2016 Guarantor Nonguarantor Tenneco Inc. Reclass Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 113 $ 187 $ (52 ) $ (15 ) $ 233 Investing Activities Proceeds from sale of assets 1 3 — — 4 Cash payments for plant, property, and equipment (72 ) (141 ) — — (213 ) Cash payments for software related intangible assets (10 ) (5 ) — — (15 ) Changes in restricted cash — (1 ) — — (1 ) Net cash used by investing activities (81 ) (144 ) — — (225 ) Financing Activities Issuance of common shares — — 7 — 7 Retirement of long-term debt - net — (16 ) (511 ) — (527 ) Issuance of long-term debt - net — 8 500 — 508 Debt issuance cost of long-term debt — — (8 ) — (8 ) Purchase of common stock under the share repurchase program — — (146 ) — (146 ) Net decrease in bank overdrafts — 4 — — 4 Net increase in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivables — 36 187 — 223 Net increase in short-term borrowings secured by accounts receivables — — 20 — 20 Intercompany dividend payments and net increase (decrease) in intercompany obligations (34 ) 16 3 15 — Distributions to noncontrolling interest partners — (55 ) — — (55 ) Net cash provided (used) by financing activities (34 ) (7 ) 52 15 26 Effect of foreign exchange rate changes on cash and cash equivalents — 3 — — 3 Increase (decrease) in cash and cash equivalents (2 ) 39 — — 37 Cash and cash equivalents, January 1 2 285 — — 287 Cash and cash equivalents, June 30 (Note) $ — $ 324 $ — $ — $ 324 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase.

Revision of Previously Issued F

Revision of Previously Issued Financial Statements	9 Months Ended
	Sep. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Revision of Previously Issued Financial Statements	ion of Previously Issued Financial Statements For the periods from April 1, 2013 through March 31, 2017, we identified in the second quarter of 2017 that approximately $34 million in lump sum payments from our suppliers were incorrectly recorded upon receipt as a reduction to cost of sales. These payments should have been deferred and amortized over the life of the underlying supplier agreements. The deferred credit balance related to these payments was $25 million at September 30, 2017. In addition, we identified in the second quarter of 2017 that approximately $7 million in cost of sales should have been accrued in prior periods for substrate liabilities, impacting the periods from January 1, 2016 through March 31, 2017. We evaluated the impact of these items on prior periods under the guidance of SEC Staff Accounting Bulletin (SAB) No. 99, “Materiality” and determined that the amounts were not material to previously issued financial statements. We also evaluated the impact of correcting these items through a cumulative adjustment to our financial statements and concluded that based on the guidance within SEC SAB No. 108, “Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements” it was appropriate to revise our previously issued financial statements to reflect this correction. As a result, we have revised and will revise for annual and interim periods in future filings, for certain amounts in the consolidated financial statements and related notes in order to correct these errors, which are described further below. The following tables present the impact of this revision on our condensed consolidated statements of income, comprehensive income and cash flows for the three months and nine months ended September 30, 2016, and changes in shareholders' equity for the nine months ended September 30, 2016. Three Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions Except Per Share Amounts) Condensed Consolidated Income Statement Cost of sales (exclusive of depreciation and amortization) $ 1,741 $ 2 $ 1,743 Earnings before interest expense, income taxes, and noncontrolling interests 152 (2 ) 150 Earnings before income taxes and noncontrolling interests 128 (2 ) 126 Income tax expense (benefit) (69 ) (1 ) (70 ) Net income 197 (1 ) 196 Net income attributable to Tenneco Inc. $ 180 $ (1 ) $ 179 Earnings per share Basic earnings per share of common stock $ 3.24 $ (0.02 ) $ 3.22 Diluted earnings per share of common stock $ 3.21 $ (0.02 ) $ 3.19 Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions Except Per Share Amounts) Condensed Consolidated Income Statement Cost of sales (exclusive of depreciation and amortization) $ 5,321 $ 8 $ 5,329 Earnings before interest expense, income taxes, and noncontrolling interests 453 (8 ) 445 Earnings before income taxes and noncontrolling interests 377 (8 ) 369 Income tax expense (benefit) 5 (2 ) 3 Net income 372 (6 ) 366 Less: Net income attributable to noncontrolling interests 49 (1 ) 48 Net income attributable to Tenneco Inc. $ 323 $ (5 ) $ 318 Earnings per share Basic earnings per share of common stock $ 5.72 $ (0.09 ) $ 5.63 Diluted earnings per share of common stock $ 5.67 $ (0.09 ) $ 5.58 Three Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Comprehensive Income Tenneco Inc. Net Income $ 180 $ (1 ) $ 179 Other Comprehensive Income 5 — 5 Comprehensive Income $ 185 $ (1 ) $ 184 Noncontrolling Interests Net Income $ 17 $ — $ 17 Other Comprehensive Income — — — Comprehensive Income $ 17 $ — $ 17 Total Net Income $ 197 $ (1 ) $ 196 Other Comprehensive Income 5 — 5 Comprehensive Income $ 202 $ (1 ) $ 201 Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Comprehensive Income Tenneco Inc. Net Income $ 323 $ (5 ) $ 318 Other Comprehensive Income 15 — 15 Comprehensive Income $ 338 $ (5 ) $ 333 Noncontrolling Interests Net Income $ 49 $ (1 ) $ 48 Other Comprehensive Loss (1 ) — (1 ) Comprehensive Income $ 48 $ (1 ) $ 47 Total Net Income $ 372 $ (6 ) $ 366 Other Comprehensive Income 14 — 14 Comprehensive Income $ 386 $ (6 ) $ 380 Three Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Cash Flow * Net income $ 197 $ (1 ) $ 196 Increase (decrease) in payables (7 ) 2 (5 ) Increase (decrease) in accrued taxes 1 (1 ) — Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Cash Flow * Net income $ 372 $ (6 ) $ 366 Deferred income taxes (73 ) (1 ) (74 ) Increase (decrease) in payables 55 4 59 Increase (decrease) in accrued taxes 10 (1 ) 9 Changes in long-term liabilities 9 4 13 * No change to net cash provided by operating activities. Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statements of Changes in Shareholders' Equity Retained earnings (accumulated deficit) Balance January 1 $ (1,448 ) $ (8 ) $ (1,456 ) Net income attributable to Tenneco Inc. 323 (5 ) 318 Balance September 30 $ (1,125 ) $ (13 ) $ (1,138 ) Total Tenneco Inc. shareholders' equity $ 635 $ (13 ) $ 622 Noncontrolling interests: Balance January 1 $ 42 $ (3 ) $ 39 Net income 21 (1 ) 20 Other comprehensive loss (1 ) 1 — Dividends declared (22 ) $ — (22 ) Balance September 30 $ 40 $ (3 ) $ 37 Total Equity $ 675 $ (16 ) $ 659

New Accounting Pronouncements (

New Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The new guidance improves the presentation of net periodic pension cost and net period postretirement benefit cost. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In November 2016, the FASB issued Accounting Standard Update 2016-18, Statement of Cash Flows - Restricted Cash (Topic 230) to eliminate diversity in practice in the presentation of restricted cash and restricted cash equivalents in the statement of cash flows. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In October 2016, the FASB issued Accounting Standard Update 2016-16, Income Taxes - Intra Entity Transfers of Assets Other Than Inventory (Topic 740). The new standard changes the accounting for income taxes when a company transfers certain tangible and intangible assets, such as equipment or intellectual property, between entities in different tax jurisdictions. The new standard does not change the current accounting for the income taxes related to transfers of inventory. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In March 2016, the FASB issued Accounting Standard Update 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, as part of its initiative to reduce complexity in accounting standards. The areas for simplification in this update involve several aspects of the accounting for employee share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. We adopted this standard for the first quarter of 2017. The impact of the adoption resulted in the following: • We recorded a tax benefit of $2 million within income tax expense for the nine months ended September 30, 2017 related to the excess tax benefit on share-based awards. Prior to adoption, this amount would have been recorded as an addition of additional paid-in capital. • We no longer reclassify the excess tax benefit from operating activities to financing activities in the statement of cash flows. Cash payments made to the taxing authorities on employees' behalf for withheld shares are presented as financing activities. Tenneco elected to apply this change in presentation retrospectively and thus prior periods have been adjusted. • We excluded the excess tax benefits from the assumed proceeds available to repurchase shares in the computation of our diluted earnings per share for the quarter ended September 30, 2017 . The impact was not material. In February 2016, the FASB issued Accounting Standard Update 2016-02, Leases (Topic 842). The amendments in this update create Topic 842, Leases, and supersede the leases requirements in Topic 840, Leases. The objective of Topic 842 is to establish the principles that lessees and lessors shall apply to report useful information to users of financial statements about the amount, timing, and uncertainty of cash flow arising from a lease. For public business entities, the standard is effective for financial statements issued for annual periods beginning after December 15, 2018, and interim periods within those annual periods. We will adopt this amendment on January 1, 2019. We are currently evaluating the potential impact of this new guidance on our consolidated financial statements. In May 2014, the FASB issued an amendment on revenue recognition. The amendment in this update creates Topic 606, Revenue from Contracts with Customers, and supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, including most industry-specific revenue recognition guidance throughout the Industry Topics of the Codification. In addition, the amendment supersedes the cost guidance in Subtopic 605-35, Revenue Recognition-Construction-Type and Production-Type Contracts, and creates new Subtopic 340-40, Other Assets and Deferred Costs-Contracts with Customers. The core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The FASB approved a one-year deferral of the effective date from January 1, 2017 to January 1, 2018, while allowing for early adoption as of January 1, 2017 for public entities. We will adopt this amendment on January 1, 2018. The guidance permits the use of either the retrospective or modified retrospective (cumulative effect) transition method. We will adopt the guidance effective January 1, 2018 using the modified retrospective method by recognizing the cumulative effect in equity at the date of initial application. We have established a cross-functional coordinated team to implement the guidance related to the recognition of revenue from contracts with customers. We are in the process of assessing our customer contracts, identifying contractual provisions that may result in a change in the timing or the amount of revenue recognized in comparison with current guidance, as well as assessing the enhanced disclosure requirements of the new guidance. Under current guidance, we generally recognize revenue when products are shipped and risk of loss has transferred to the customer. Under the new requirements, the customized nature of some of our products combined with contractual provisions that provide us with an enforceable right to payment will require us to recognize revenue over time during production. Our findings to date indicate only a small number of our customers provide an enforceable right to payment and therefore would be recognized over time. We evaluated how the new guidance may affect our accounting for contractually guaranteed reimbursements related to customer tooling, engineering services and pre-production costs. Under the current applicable guidance, these customer reimbursements are recorded as cost recovery offsets; whereas under the new standard these guaranteed recoveries may represent consideration from contracts with customers and be recorded as revenues. Our findings to date indicate these reimbursements are outside the scope of the new accounting standard and thus accounting for such reimbursements is not expected to be impacted. In addition, we are assessing pricing provisions contained in certain of our customer contracts. Certain price adjustments if they are determined to represent an option to purchase additional product at a reduced price could grant a material right to the customer and require a deferral of revenue. While Tenneco pricing provisions contained in customer contracts are generally reflective of market conditions and customary industry pricing practices, some may provide the customer with a material right. Based on our evaluation to date, no pricing provisions have been considered to represent a material right.

Consolidation and Presentation

Consolidation and Presentation (Tables)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Redeemable Noncontrolling Interest	The following is a rollforward of activities in our redeemable noncontrolling interests for the nine months ended September 30, 2017 and 2016, respectively: Nine Months Ended September 30, 2017 2016 (Millions) Balance January 1 $ 40 $ 41 Net income attributable to redeemable noncontrolling interests 27 27 Other comprehensive loss 2 (1 ) Dividends declared (37 ) (35 ) Balance September 30 $ 32 $ 32

Financial Instruments (Tables)

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Carrying and Estimated Fair Value	The net carrying and estimated fair values of our financial instruments by class at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 December 31, 2016 Net Carrying Amount Fair Value Net Carrying Amount Fair Value (Millions) Long-term debt (including current maturities) $ 1,575 $ 1,612 $ 1,297 $ 1,311 Equity swap agreement and foreign currency forward contracts: Asset derivative contracts (a) 6 6 — — (a) All derivatives are categorized within Level 2 of the fair value hierarchy.
Summarization for Foreign Currency Forward Purchase and Sale Contracts	The following table summarizes by major currency the notional amounts for foreign currency forward purchase and sale contracts as of September 30, 2017 (all of which mature in 2017): Notional Amount in Foreign Currency (Millions) British pounds —Purchase 10 Canadian dollars —Sell (2 ) European euro —Sell (4 ) U.S. dollars —Purchase 7 —Sell (14 )

Long-Term Debt and Financing 24

Long-Term Debt and Financing Arrangements (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Financial Ratios under Senior Credit Facility	The financial ratios required under the senior credit facility, and the actual ratios we achieved for the first three quarters of 2017, are as follows: Quarter Ended September 30, 2017 June 30, 2017 March 31, 2017 Required Actual Required Actual Required Actual Leverage Ratio (maximum) 3.50 2.15 3.50 1.97 3.50 1.62 Interest Coverage Ratio (minimum) 2.75 11.48 2.75 12.44 2.75 15.38

Restructuring and Other Charg25

Restructuring and Other Charges (Tables)	9 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Roll Forward of Restructuring Reserve	Amounts related to activities that are part of our restructuring reserves are as follows: December 31, 2017 2017 Impact of Exchange Rates September 30, 2017 (Millions) Employee Severance, Termination Benefits and Other Related Costs $15 38 (18 ) 2 $37

Environmental Matters, Litiga26

Environmental Matters, Litigation and Product Warranties (Tables)	9 Months Ended
	Sep. 30, 2017
Environmental Matters, Litigation and Product Warranties [Abstract]
Warranty Accrual Rollforward	Below is a table that shows the activity in the warranty accrual accounts: Nine Months Ended September 30, 2017 2016 (Millions) Beginning Balance January 1, $ 20 $ 23 Accruals related to product warranties 13 6 Reductions for payments made (8 ) (10 ) Ending Balance September 30, $ 25 $ 19

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Summary of Earnings Per Share of Common Stock	Earnings per share of common stock outstanding were computed as follows: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 (Millions Except Share and Per Share Amounts) Basic earnings per share — Net income attributable to Tenneco Inc. $ 83 $ 179 $ 139 $ 318 Weighted Average shares of common stock outstanding 52,508,078 55,679,969 53,265,149 56,511,838 Earnings per share of common stock $ 1.57 $ 3.22 $ 2.61 $ 5.63 Diluted earnings per share — Net income attributable to Tenneco Inc. $ 83 $ 179 $ 139 $ 318 Weighted Average shares of common stock outstanding 52,508,078 55,679,969 53,265,149 56,511,838 Effect of dilutive securities: Restricted stock 89,666 207,707 106,320 144,145 Stock options 89,912 278,033 130,395 302,464 Weighted Average shares of common stock outstanding including dilutive securities 52,687,656 56,165,709 53,501,864 56,958,447 Earnings per share of common stock $ 1.57 $ 3.19 $ 2.60 $ 5.58

Common Stock (Tables)

Common Stock (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Options Status and Activity	Stock Options — The following table reflects the status and activity for all options to purchase common stock for the period indicated: Nine Months Ended September 30, 2017 Shares Under Option Weighted Avg. Exercise Prices Weighted Avg. Remaining Life in Years Aggregate Intrinsic Value (Millions) Outstanding Stock Options Outstanding, January 1, 2017 606,525 $ 38.54 2.6 $ 12 Canceled (2,214 ) 56.23 — Forfeited (1,107 ) 56.23 — Exercised (164,863 ) 33.70 5 Outstanding, March 31, 2017 438,341 $ 40.22 2.6 $ 11 Forfeited (278 ) 66.54 — Exercised (3,242 ) 45.42 — Outstanding, June 30, 2017 434,821 $ 40.16 2.4 $ 8 Forfeited (41,369 ) 19.53 — Exercised (50,125 ) 34.79 1 Outstanding, September 30, 2017 343,327 $ 43.44 2.4 $ 4
Nonvested Restricted Shares	Restricted Stock — The following table reflects the status for all nonvested restricted shares for the period indicated: Nine Months Ended September 30, 2017 Shares Weighted Avg. Grant Date Fair Value Nonvested Restricted Shares Nonvested balance at January 1, 2017 591,416 $ 44.63 Granted 182,543 68.04 Vested (261,003 ) 50.95 Forfeited (65,354 ) 53.12 Nonvested balance at March 31, 2017 447,602 $ 49.25 Granted 23,295 57.22 Vested (15,336 ) 46.77 Forfeited (6,271 ) 48.10 Nonvested balance at June 30, 2017 449,290 $ 49.79 Granted 2,001 55.80 Vested (4,581 ) 55.52 Forfeited (10,234 ) 44.82 Nonvested balance at September 30, 2017 436,476 $ 49.87

Pension Plans, Postretirement29

Pension Plans, Postretirement and Other Employee Benefits (Tables)	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Cost	t periodic pension costs and postretirement benefit costs consist of the following components: Three Months Ended September 30, Pension Postretirement 2017 2016 2017 2016 US Foreign US Foreign US US (Millions) Service cost — benefits earned during the period $ 1 $ 3 $ 1 $ 2 $ — $ — Interest cost 2 4 4 4 1 1 Expected return on plan assets (4 ) (4 ) (6 ) (5 ) — — Net amortization: Actuarial loss 1 1 2 1 2 2 Prior service cost (credit) — 1 — 1 — (1 ) Net pension and postretirement costs $ — $ 5 $ 1 $ 3 $ 3 $ 2 Nine Months Ended September 30, Pension Postretirement 2017 2016 2017 2016 US Foreign US Foreign US US (Millions) Service cost — benefits earned during the period $ 1 $ 7 $ 1 $ 6 $ — $ — Interest cost 7 10 13 11 4 4 Expected return on plan assets (11 ) (19 ) (18 ) (15 ) — — Settlement loss 6 — — — — — Net amortization: Actuarial loss 4 6 6 5 5 4 Prior service cost (credit) — 1 — 1 (1 ) (1 ) Net pension and postretirement costs $ 7 $ 5 $ 2 $ 8 $ 8 $ 7
Amounts Recognized for Pension and Postretirement Benefits in Other Comprehensive Income	mounts recognized for pension and postretirement benefits in other comprehensive income for the three and nine months ended September 30, 2017 and 2016 include the following components: Three Months Ended September 30, 2017 2016 Before-Tax Amount Tax Benefit Net-of-Tax Amount Before- Tax Amount Tax Benefit Net-of-Tax Amount (Millions) Defined benefit pension and postretirement plans: Amortization of prior service cost included in net periodic pension and postretirement cost $ 1 $ — $ 1 $ — $ — $ — Amortization of actuarial loss included in net periodic pension and postretirement cost 4 (2 ) 2 5 (1 ) 4 Other comprehensive income – pension benefits $ 5 $ (2 ) $ 3 $ 5 $ (1 ) $ 4 Nine Months Ended September 30, 2017 2016 Before-Tax Tax Benefit Net-of-Tax Before- Tax Benefit Net-of-Tax (Millions) Defined benefit pension and postretirement plans: Amortization of actuarial loss included in net periodic pension and postretirement cost $ 15 $ (5 ) $ 10 $ 15 $ (4 ) $ 11 Settlement charge 6 (2 ) 4 — — — Other comprehensive income – pension benefits $ 21 $ (7 ) $ 14 $ 15 $ (4 ) $ 11

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Information	The following table summarizes certain Tenneco Inc. segment information: Clean Air Division Ride Performance Division North America Europe & South America Asia Pacific North America Europe & South America Asia Pacific Other Reclass & Elims Total (Millions) At September 30, 2017 and for the Three Months Ended September 30, 2017 Revenues from external customers $ 723 $ 536 $ 313 $ 304 $ 279 $ 119 $ — $ — $ 2,274 Intersegment revenues 5 7 — 2 6 16 — (36 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 46 25 36 29 6 11 (19 ) — 134 Total assets 1,504 882 751 761 590 388 — 59 4,935 At September 30, 2016 and for the Three Months Ended September 30, 2016 Revenues from external customers 716 474 270 306 229 101 — — 2,096 Intersegment revenues 4 24 1 2 6 12 — (49 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 42 29 39 37 8 17 (22 ) — 150 Total assets 1,390 810 625 727 478 333 — 47 4,410 At September 30, 2017 and for the Nine Months Ended September 30, 2017 Revenues from external customers $ 2,341 $ 1,620 $ 861 $ 945 $ 786 $ 330 $ — $ — $ 6,883 Intersegment revenues 13 38 3 8 23 44 — (129 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 153 79 91 100 19 45 (205 ) — 282 Total assets 1,504 882 751 761 590 388 — 59 4,935 At September 30, 2016 and for the Nine Months Ended September 30, 2016 Revenues from external customers 2,252 1,462 813 952 689 276 — — 6,444 Intersegment revenues 9 71 2 6 21 37 — (146 ) — EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests 168 72 110 127 12 43 (87 ) — 445 Total assets 1,390 810 625 727 478 333 — 47 4,410

Supplemental Guarantor Conden31

Supplemental Guarantor Condensed Consolidating Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Statement of Comprehensive Income (Loss)	STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended September 30, 2017 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Revenues Net sales and operating revenues — External $ 917 $ 1,357 $ — $ — $ 2,274 Affiliated companies 128 143 — (271 ) — 1,045 1,500 — (271 ) 2,274 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 889 1,295 — (271 ) 1,913 Engineering, research, and development 17 23 — — 40 Selling, general, and administrative 51 77 — — 128 Depreciation and amortization of other intangibles 23 35 — — 58 980 1,430 — (271 ) 2,139 Other income (expense) Loss on sale of receivables (1 ) (1 ) — — (2 ) Other income (expense) (9 ) 10 — — 1 (10 ) 9 — — (1 ) Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 55 79 — — 134 Interest expense — External (net of interest capitalized) 7 2 10 — 19 Affiliated companies (net of interest income) (5 ) 3 2 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 53 74 (12 ) — 115 Income tax (benefit) expense (5 ) 21 — — 16 Equity in net income (loss) from affiliated companies 31 — 95 (126 ) — Net income (loss) 89 53 83 (126 ) 99 Less: Net income attributable to noncontrolling interests — 16 — — 16 Net income (loss) attributable to Tenneco Inc. $ 89 $ 37 $ 83 $ (126 ) $ 83 Comprehensive income (loss) attributable to Tenneco Inc. $ 89 $ 31 $ 114 $ (120 ) $ 114 STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended September 30, 2016 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Revenues Net sales and operating revenues — External $ 928 $ 1,168 $ — $ — $ 2,096 Affiliated companies 134 183 — (317 ) — 1,062 1,351 — (317 ) 2,096 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 904 1,156 — (317 ) 1,743 Engineering, research, and development 20 21 — — 41 Selling, general, and administrative 48 61 — — 109 Depreciation and amortization of other intangibles 23 30 — — 53 995 1,268 — (317 ) 1,946 Other income (expense) Loss on sale of receivables (1 ) (1 ) — — (2 ) Other income (expense) (7 ) 9 — — 2 (8 ) 8 — — — Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 59 91 — — 150 Interest expense — External (net of interest capitalized) (1 ) 1 24 — 24 Affiliated companies (net of interest income) (3 ) 2 1 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 63 88 (25 ) — 126 Income tax expense (108 ) 38 — — (70 ) Equity in net income (loss) from affiliated companies 33 — 204 (237 ) — Net income (loss) 204 50 179 (237 ) 196 Less: Net income attributable to noncontrolling interests — 17 — — 17 Net income (loss) attributable to Tenneco Inc. $ 204 $ 33 $ 179 $ (237 ) $ 179 Comprehensive income (loss) attributable to Tenneco Inc. $ 204 $ 33 $ 184 $ (237 ) $ 184 STATEMENT OF COMPREHENSIVE INCOME (LOSS) Nine Months Ended September 30, 2017 Guarantor Nonguarantor Tenneco Inc. Reclass & Consolidated (Millions) Revenues Net sales and operating revenues — External $ 2,958 $ 3,925 $ — $ — $ 6,883 Affiliated companies 413 497 — (910 ) — 3,371 4,422 — (910 ) 6,883 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 2,871 3,829 — (910 ) 5,790 Engineering, research, and development 56 59 — — 115 Selling, general, and administrative 310 219 — — 529 Depreciation and amortization of other intangibles 65 100 — — 165 3,302 4,207 — (910 ) 6,599 Other income (expense) Loss on sale of receivables (2 ) (2 ) — — (4 ) Other income (expense) (9 ) 26 — (15 ) 2 (11 ) 24 — (15 ) (2 ) Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 58 239 — (15 ) 282 Interest expense — External (net of interest capitalized) 10 4 40 — 54 Affiliated companies (net of interest income) (12 ) 6 6 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 60 229 (46 ) (15 ) 228 Income tax expense 6 35 — — 41 Equity in net income (loss) from affiliated companies 119 — 185 (304 ) — Net income (loss) 173 194 139 (319 ) 187 Less: Net income attributable to noncontrolling interests — 48 — — 48 Net income attributable to Tenneco Inc. $ 173 $ 146 $ 139 $ (319 ) $ 139 Comprehensive income (loss) attributable to Tenneco Inc. $ 173 $ 140 $ 234 $ (313 ) $ 234 STATEMENT OF COMPREHENSIVE INCOME (LOSS) Nine Months Ended September 30, 2016 Guarantor Nonguarantor Tenneco Inc. Reclass & Consolidated (Millions) Revenues Net sales and operating revenues — External $ 2,929 $ 3,515 $ — $ — $ 6,444 Affiliated companies 389 569 — (958 ) — 3,318 4,084 — (958 ) 6,444 Costs and expenses Cost of sales (exclusive of depreciation and amortization shown below) 2,800 3,487 — (958 ) 5,329 Engineering, research, and development 59 58 — — 117 Selling, general, and administrative 174 215 1 — 390 Depreciation and amortization of other intangibles 65 94 — — 159 3,098 3,854 1 (958 ) 5,995 Other income (expense) Loss on sale of receivables (2 ) (2 ) — — (4 ) Other income (expense) (6 ) 21 — (15 ) — (8 ) 19 — (15 ) (4 ) Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies 212 249 (1 ) (15 ) 445 Interest expense — External (net of interest capitalized) (1 ) 3 74 — 76 Affiliated companies (net of interest income) (9 ) 6 3 — — Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies 222 240 (78 ) (15 ) 369 Income tax expense (71 ) 74 — — 3 Equity in net income (loss) from affiliated companies 118 — 396 (514 ) — Net income (loss) 411 166 318 (529 ) 366 Less: Net income attributable to noncontrolling interests — 48 — — 48 Net income (loss) attributable to Tenneco Inc. $ 411 $ 118 $ 318 $ (529 ) $ 318 Comprehensive income (loss) attributable to Tenneco Inc. $ 411 $ 118 $ 333 $ (529 ) $ 333
Balance Sheet	BALANCE SHEET September 30, 2017 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) ASSETS Current assets: Cash and cash equivalents $ 4 $ 273 $ — $ — $ 277 Restricted cash — 2 — — 2 Receivables, net 619 1,578 — (722 ) 1,475 Inventories 394 488 — — 882 Prepayments and other 104 221 — — 325 Total current assets 1,121 2,562 — (722 ) 2,961 Other assets: Investment in affiliated companies 1,256 — 1,517 (2,773 ) — Notes and advances receivable from affiliates 968 18,572 4,010 (23,550 ) — Long-term receivables, net 8 1 — — 9 Goodwill 22 37 — — 59 Intangibles, net 6 11 — — 17 Deferred income taxes 101 36 88 — 225 Other 62 61 — — 123 2,423 18,718 5,615 (26,323 ) 433 Plant, property, and equipment, at cost 1,463 2,504 — — 3,967 Less — Accumulated depreciation and amortization (937 ) (1,489 ) — — (2,426 ) 526 1,015 — — 1,541 Total assets $ 4,070 $ 22,295 $ 5,615 $ (27,045 ) $ 4,935 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt (including current maturities of long-term debt) Short-term debt — non-affiliated $ — $ 93 $ 15 $ — $ 108 Short-term debt — affiliated 398 151 — (549 ) — Accounts payable 594 1,098 — (91 ) 1,601 Accrued taxes 45 1 — — 46 Other 224 326 9 (82 ) 477 Total current liabilities 1,261 1,669 24 (722 ) 2,232 Long-term debt — non-affiliated 846 13 714 — 1,573 Long-term debt — affiliated 706 18,614 4,230 (23,550 ) — Deferred income taxes — 6 — — 6 Postretirement benefits and other liabilities 275 131 — — 406 Commitments and contingencies Total liabilities 3,088 20,433 4,968 (24,272 ) 4,217 Redeemable noncontrolling interests — 32 — — 32 Tenneco Inc. shareholders’ equity 982 1,791 647 (2,773 ) 647 Noncontrolling interests — 39 — — 39 Total equity 982 1,830 647 (2,773 ) 686 Total liabilities, redeemable noncontrolling interests and equity $ 4,070 $ 22,295 $ 5,615 $ (27,045 ) $ 4,935 BALANCE SHEET December 31, 2016 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) ASSETS Current assets: Cash and cash equivalents $ 9 $ 338 $ — $ — $ 347 Restricted cash — 2 — — 2 Receivables, net 386 1,412 — (504 ) 1,294 Inventories 361 369 — — 730 Prepayments and other 62 167 — — 229 Total current assets 818 2,288 — (504 ) 2,602 Other assets: Investment in affiliated companies 1,213 — 1,207 (2,420 ) — Notes and advances receivable from affiliates 939 16,529 4,781 (22,249 ) — Long-term receivables, net 9 — — — 9 Goodwill 22 35 — — 57 Intangibles, net 7 12 — — 19 Deferred income taxes 47 23 129 — 199 Other 46 49 8 — 103 2,283 16,648 6,125 (24,669 ) 387 Plant, property, and equipment, at cost 1,371 2,177 — — 3,548 Less — Accumulated depreciation and amortization (895 ) (1,296 ) — — (2,191 ) 476 881 — — 1,357 Total assets $ 3,577 $ 19,817 $ 6,125 $ (25,173 ) $ 4,346 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt (including current maturities of long-term debt) Short-term debt — non-affiliated $ — $ 75 $ 15 $ — $ 90 Short-term debt — affiliated 167 187 — (354 ) — Accounts payable 562 1,027 — (88 ) 1,501 Accrued taxes 4 35 — — 39 Other 147 243 15 (62 ) 343 Total current liabilities 880 1,567 30 (504 ) 1,973 Long-term debt — non-affiliated — 12 1,282 — 1,294 Long-term debt — affiliated 1,543 16,466 4,240 (22,249 ) — Deferred income taxes — 7 — — 7 Postretirement benefits and other liabilities 297 115 — — 412 Commitments and contingencies Total liabilities 2,720 18,167 5,552 (22,753 ) 3,686 Redeemable noncontrolling interests — 40 — — 40 Tenneco Inc. shareholders’ equity 857 1,563 573 (2,420 ) 573 Noncontrolling interests — 47 — — 47 Total equity 857 1,610 573 (2,420 ) 620 Total liabilities, redeemable noncontrolling interests and equity $ 3,577 $ 19,817 $ 6,125 $ (25,173 ) $ 4,346
Statement of Cash Flows	STATEMENT OF CASH FLOWS Three Months Ended September 30, 2017 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 39 $ 26 $ (8 ) $ (4 ) $ 53 Investing Activities Cash payments for plant, property, and equipment (29 ) (61 ) — — (90 ) Cash payments for software related intangible assets (4 ) (1 ) — — (5 ) Other (1 ) — — — (1 ) Net cash used by investing activities (34 ) (62 ) — — (96 ) Financing Activities Issuance of common shares — — 1 — 1 Cash dividends — — (14 ) — (14 ) Retirement of long-term debt - net — (1 ) — — (1 ) Purchase of common stock under the share repurchase program — — (71 ) — (71 ) Net increase in bank overdrafts — (3 ) — — (3 ) Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt 82 2 — — 84 Intercompany dividend payments and net increase (decrease) in intercompany obligations (87 ) (9 ) 92 4 — Distributions to noncontrolling interest partners — (12 ) — — (12 ) Net cash provided (used) by financing activities (5 ) (23 ) 8 4 (16 ) Effect of foreign exchange rate changes on cash and cash equivalents — 3 — — 3 Decrease in cash and cash equivalents — (56 ) — — (56 ) Cash and cash equivalents, July 1 4 329 — — 333 Cash and cash equivalents, September 30 (Note) $ 4 $ 273 $ — $ — $ 277 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase. STATEMENT OF CASH FLOWS Three Months Ended September 30, 2016 Guarantor Subsidiaries Nonguarantor Subsidiaries Tenneco Inc. (Parent Company) Reclass & Elims Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 170 $ (17 ) $ (19 ) $ (4 ) $ 130 Investing Activities Proceeds from sale of assets 1 — — — 1 Cash payments for plant, property, and equipment (29 ) (45 ) — — (74 ) Cash payments for software related intangible assets (6 ) — — — (6 ) Changes in restricted cash — 1 — — 1 Net cash used by investing activities (34 ) (44 ) — — (78 ) Financing Activities Issuance of common shares — — 5 — 5 Retirement of long-term debt - net — — (179 ) — (179 ) Issuance of long-term debt - net — 2 — — 2 Purchase of common stock under the share repurchase program — — (89 ) — (89 ) Net decrease in bank overdrafts — (1 ) — — (1 ) Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivables — 46 152 — 198 Net decrease in short-term borrowings secured by accounts receivable — — 50 — 50 Intercompany dividend payments and net increase (decrease) in intercompany obligations (137 ) 54 79 4 — Distributions to noncontrolling interest partners — (28 ) — — (28 ) Net cash provided (used) by financing activities (137 ) 73 18 4 (42 ) Effect of foreign exchange rate changes on cash and cash equivalents (1 ) 3 1 — 3 Increase (decrease) in cash and cash equivalents (2 ) 15 — — 13 Cash and cash equivalents, July 1 2 309 — — 311 Cash and cash equivalents, September 30 (Note) $ — $ 324 $ — $ — $ 324 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase. STATEMENT OF CASH FLOWS Nine Months Ended September 30, 2017 Guarantor Nonguarantor Tenneco Inc. Reclass Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 102 $ 101 $ (29 ) $ (11 ) $ 163 Investing Activities Proceeds from sale of equity interest — 9 — — 9 Proceeds from sale of assets 3 3 — — 6 Cash payments for plant, property, and equipment (110 ) (173 ) — — (283 ) Cash payments for software related intangible assets (10 ) (7 ) — — (17 ) Other (5 ) — — — (5 ) Net cash used by investing activities (122 ) (168 ) — — (290 ) Financing Activities Repurchase of common shares — — (2 ) — (2 ) Cash dividends — — (40 ) — (40 ) Retirement of long-term debt - net — (3 ) (6 ) — (9 ) Issuance of long-term debt - net 400 — (264 ) — 136 Debt issuance cost of long-term debt (8 ) — — — (8 ) Purchase of common stock under the share repurchase program — — (131 ) — (131 ) Net decrease in bank overdrafts — (12 ) — — (12 ) Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivables 451 16 (323 ) — 144 Net increase in short-term borrowings secured by accounts receivables — — 20 — 20 Intercompany dividend payments and net increase (decrease) in intercompany obligations (828 ) 42 775 11 — Distributions to noncontrolling interest partners — (45 ) — — (45 ) Net cash provided by financing activities 15 (2 ) 29 11 53 Effect of foreign exchange rate changes on cash and cash equivalents — 4 — — 4 Decrease in cash and cash equivalents (5 ) (65 ) — — (70 ) Cash and cash equivalents, January 1 9 338 — — 347 Cash and cash equivalents, June 30 (Note) $ 4 $ 273 $ — $ — $ 277 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase. STATEMENT OF CASH FLOWS Nine Months Ended September 30, 2016 Guarantor Nonguarantor Tenneco Inc. Reclass Consolidated (Millions) Operating Activities Net cash provided (used) by operating activities $ 113 $ 187 $ (52 ) $ (15 ) $ 233 Investing Activities Proceeds from sale of assets 1 3 — — 4 Cash payments for plant, property, and equipment (72 ) (141 ) — — (213 ) Cash payments for software related intangible assets (10 ) (5 ) — — (15 ) Changes in restricted cash — (1 ) — — (1 ) Net cash used by investing activities (81 ) (144 ) — — (225 ) Financing Activities Issuance of common shares — — 7 — 7 Retirement of long-term debt - net — (16 ) (511 ) — (527 ) Issuance of long-term debt - net — 8 500 — 508 Debt issuance cost of long-term debt — — (8 ) — (8 ) Purchase of common stock under the share repurchase program — — (146 ) — (146 ) Net decrease in bank overdrafts — 4 — — 4 Net increase in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivables — 36 187 — 223 Net increase in short-term borrowings secured by accounts receivables — — 20 — 20 Intercompany dividend payments and net increase (decrease) in intercompany obligations (34 ) 16 3 15 — Distributions to noncontrolling interest partners — (55 ) — — (55 ) Net cash provided (used) by financing activities (34 ) (7 ) 52 15 26 Effect of foreign exchange rate changes on cash and cash equivalents — 3 — — 3 Increase (decrease) in cash and cash equivalents (2 ) 39 — — 37 Cash and cash equivalents, January 1 2 285 — — 287 Cash and cash equivalents, June 30 (Note) $ — $ 324 $ — $ — $ 324 Note: Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase.

Revision of Previously Issued32

Revision of Previously Issued Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Schedule of Error Corrections and Prior Period Adjustments	The following tables present the impact of this revision on our condensed consolidated statements of income, comprehensive income and cash flows for the three months and nine months ended September 30, 2016, and changes in shareholders' equity for the nine months ended September 30, 2016. Three Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions Except Per Share Amounts) Condensed Consolidated Income Statement Cost of sales (exclusive of depreciation and amortization) $ 1,741 $ 2 $ 1,743 Earnings before interest expense, income taxes, and noncontrolling interests 152 (2 ) 150 Earnings before income taxes and noncontrolling interests 128 (2 ) 126 Income tax expense (benefit) (69 ) (1 ) (70 ) Net income 197 (1 ) 196 Net income attributable to Tenneco Inc. $ 180 $ (1 ) $ 179 Earnings per share Basic earnings per share of common stock $ 3.24 $ (0.02 ) $ 3.22 Diluted earnings per share of common stock $ 3.21 $ (0.02 ) $ 3.19 Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions Except Per Share Amounts) Condensed Consolidated Income Statement Cost of sales (exclusive of depreciation and amortization) $ 5,321 $ 8 $ 5,329 Earnings before interest expense, income taxes, and noncontrolling interests 453 (8 ) 445 Earnings before income taxes and noncontrolling interests 377 (8 ) 369 Income tax expense (benefit) 5 (2 ) 3 Net income 372 (6 ) 366 Less: Net income attributable to noncontrolling interests 49 (1 ) 48 Net income attributable to Tenneco Inc. $ 323 $ (5 ) $ 318 Earnings per share Basic earnings per share of common stock $ 5.72 $ (0.09 ) $ 5.63 Diluted earnings per share of common stock $ 5.67 $ (0.09 ) $ 5.58 Three Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Comprehensive Income Tenneco Inc. Net Income $ 180 $ (1 ) $ 179 Other Comprehensive Income 5 — 5 Comprehensive Income $ 185 $ (1 ) $ 184 Noncontrolling Interests Net Income $ 17 $ — $ 17 Other Comprehensive Income — — — Comprehensive Income $ 17 $ — $ 17 Total Net Income $ 197 $ (1 ) $ 196 Other Comprehensive Income 5 — 5 Comprehensive Income $ 202 $ (1 ) $ 201 Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Comprehensive Income Tenneco Inc. Net Income $ 323 $ (5 ) $ 318 Other Comprehensive Income 15 — 15 Comprehensive Income $ 338 $ (5 ) $ 333 Noncontrolling Interests Net Income $ 49 $ (1 ) $ 48 Other Comprehensive Loss (1 ) — (1 ) Comprehensive Income $ 48 $ (1 ) $ 47 Total Net Income $ 372 $ (6 ) $ 366 Other Comprehensive Income 14 — 14 Comprehensive Income $ 386 $ (6 ) $ 380 Three Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Cash Flow * Net income $ 197 $ (1 ) $ 196 Increase (decrease) in payables (7 ) 2 (5 ) Increase (decrease) in accrued taxes 1 (1 ) — Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statement of Cash Flow * Net income $ 372 $ (6 ) $ 366 Deferred income taxes (73 ) (1 ) (74 ) Increase (decrease) in payables 55 4 59 Increase (decrease) in accrued taxes 10 (1 ) 9 Changes in long-term liabilities 9 4 13 * No change to net cash provided by operating activities. Nine Months Ended September 30, 2016 As Previously Reported Adjustment As Revised (Millions) Condensed Consolidated Statements of Changes in Shareholders' Equity Retained earnings (accumulated deficit) Balance January 1 $ (1,448 ) $ (8 ) $ (1,456 ) Net income attributable to Tenneco Inc. 323 (5 ) 318 Balance September 30 $ (1,125 ) $ (13 ) $ (1,138 ) Total Tenneco Inc. shareholders' equity $ 635 $ (13 ) $ 622 Noncontrolling interests: Balance January 1 $ 42 $ (3 ) $ 39 Net income 21 (1 ) 20 Other comprehensive loss (1 ) 1 — Dividends declared (22 ) $ — (22 ) Balance September 30 $ 40 $ (3 ) $ 37 Total Equity $ 675 $ (16 ) $ 659

Consolidation and Presentatio33

Consolidation and Presentation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Nov. 02, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cost of sales		$ 1,913	$ 1,743	$ 5,790	$ 5,329
In process tools and dies built for original equipment customers		133		133				$ 97
Accrued compensation		109		109				99
Bank overdrafts		14		14				$ 26
Net Income		$ 99	$ 196	$ 187	$ 366
Diluted earnings per share of common stock (in dollars per share)		$ 1.57	$ 3.19	$ 2.60	$ 5.58
Minimum
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Equity method ownership percentage		20.00%		20.00%
Maximum
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Equity method ownership percentage		50.00%		50.00%
Adjustment
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cost of sales			$ 2		$ 8
Net Income			$ (1)		$ (6)
Diluted earnings per share of common stock (in dollars per share)			$ (0.02)		$ (0.09)
Lump Sum Payments Immediately Recognized, Should Have Been Deferred And Amortized | Adjustment
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cost of sales							$ 34
Deferred charges		$ 25		$ 25
AccrualsForSubstrateLiabilitiesAndAssociatedCostOfSales [Member] | Adjustment
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cost of sales						$ 7
Subsequent event | Adjustment
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net Income	$ 6
Diluted earnings per share of common stock (in dollars per share)	$ 0.12

Consolidation and Presentatio34

Consolidation and Presentation - Redeemable Noncontrolling Interest (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Redeemable Noncontrolling Interest [Roll Forward]
Balance January 1	$ 40	$ 41
Net income attributable to redeemable noncontrolling interests	27	27
Other comprehensive loss	2	(1)
Dividends declared	(37)	(35)
Balance September 30	$ 32	$ 32

Financial Instruments - Carryin

Financial Instruments - Carrying and Estimated Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Carrying And Estimated Fair Value [Line Items]
Long-term debt (including current maturities)	$ 1,573	$ 1,294
Net Carrying Amount
Carrying And Estimated Fair Value [Line Items]
Long-term debt (including current maturities)	1,575	1,297
Net Carrying Amount | Equity swap agreement and foreign currency forward contracts
Equity swap agreement and foreign currency forward contracts:
Asset derivative contracts (a)	6	0
Fair Value
Carrying And Estimated Fair Value [Line Items]
Long-term debt (including current maturities)	1,612	1,311
Fair Value | Equity swap agreement and foreign currency forward contracts
Equity swap agreement and foreign currency forward contracts:
Asset derivative contracts (a)	$ 6	$ 0

Financial Instruments - Fair Va

Financial Instruments - Fair Value of Long Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	$ 749	$ 725
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	849	571
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	$ 14	$ 15

Financial Instruments - Additio

Financial Instruments - Additional Information (Details) shares in Thousands, $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)group_retirement_planperformance_agreementshares	Dec. 31, 2016USD ($)
Financial Instruments [Line Items]
Maximum percentage of stock of certain first tier foreign subsidiaries pledged to secure senior credit facility	66.00%
Line of credit facility letters of credit outstanding	$ 32
Financial Instruments not redeemed and used for vendor payment	8	$ 12
Negotiable financial instruments received from OE customer not redeemed	3	5
Other Current Assets
Financial Instruments [Line Items]
Negotiable financial instruments received from OE customer not redeemed	3	5
Subsidiaries | CHINA
Financial Instruments [Line Items]
Restricted cash	1	2
Subsidiaries | BRAZIL
Financial Instruments [Line Items]
Restricted cash	$ 1
TMEL and Walker Plans
Financial Instruments [Line Items]
Number of performance guarantee agreements | performance_agreement	2
Number of group benefit plans under the agreement | group_retirement_plan	2
Percentage of the pension obligation recognized for participating employers	100.00%
Pension obligation of participating employers recognized on the balance sheet	$ 12	19
Foreign Exchange Forward Contracts
Financial Instruments [Line Items]
Term of foreign currency forward contracts (less than one year)	1 year
Net asset position	$ 1
Net liability position		$ 1
Equity Swap
Financial Instruments [Line Items]
Common share equivalents | shares	250
Net asset position fair value	$ 5

Financial Instruments - Summari

Financial Instruments - Summarization for Foreign Currency Forward Purchase and Sale Contracts (Details) - Sep. 30, 2017 - Foreign Exchange Forward Contracts € in Millions, £ in Millions, CAD in Millions, $ in Millions	CAD	GBP (£)	USD ($)	EUR (€)
British, Pounds | Long
Derivative [Line Items]
Notional Amount in Foreign Currency | £		£ 10
Canada, Dollars | Short
Derivative [Line Items]
Notional Amount in Foreign Currency | CAD	CAD 2
European, Euro | Short
Derivative [Line Items]
Notional Amount in Foreign Currency | €				€ 4
U.S., Dollars | Long
Derivative [Line Items]
Notional Amount in Foreign Currency			$ 7
U.S., Dollars | Short
Derivative [Line Items]
Notional Amount in Foreign Currency			$ 14

Long-Term Debt and Financing 39

Long-Term Debt and Financing Arrangements - Additional Information (Details)	1 Months Ended	3 Months Ended					9 Months Ended		18 Months Ended
	May 31, 2017USD ($)	Jun. 30, 2022USD ($)	Jun. 30, 2019USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2020USD ($)	Sep. 30, 2017USD ($)	Mar. 31, 2022USD ($)	May 12, 2017USD ($)	May 11, 2017USD ($)	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Maximum percentage of stock of certain first-tier foreign subsidiaries pledged to secure senior credit facility				66.00%				66.00%
Debt outstanding				$ 1,573,000,000				$ 1,573,000,000				$ 1,294,000,000
Leverage Ratio Required (Maximum) for future quarters								3.50
Interest coverage ratio (minimum)								2.75
5.375% Senior Notes Due 2024
Debt Instrument [Line Items]
Outstanding debt				225,000,000				$ 225,000,000
Debt issuance costs				3,000,000				3,000,000
Debt outstanding				222,000,000				222,000,000
5% Senior Notes Due July 15 2026
Debt Instrument [Line Items]
Outstanding debt				500,000,000				500,000,000
Debt issuance costs				8,000,000				8,000,000
Debt outstanding				492,000,000				492,000,000
Other Debt
Debt Instrument [Line Items]
Unsecured debt				121,000,000				121,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity				1,600,000,000				1,600,000,000		$ 1,600,000,000	$ 1,200,000,000
Outstanding debt				453,000,000				453,000,000
Unused borrowing capacity				1,147,000,000				1,147,000,000
Revolving Credit Facility | Tranche Term Facility
Debt Instrument [Line Items]
Outstanding debt											$ 264,000,000
Debt issuance costs				2,000,000				2,000,000
Debt outstanding				393,000,000				393,000,000		$ 400,000,000
Principal payments excluded from current liabilities				20,000,000				20,000,000
Revolving Credit Facility | Amended and Restated Facility
Debt Instrument [Line Items]
Pre-tax interest charges	$ 1,000,000
Revolving Credit Facility | Term loan
Debt Instrument [Line Items]
Outstanding debt				395,000,000				395,000,000
Letter of Credit
Debt Instrument [Line Items]
Outstanding debt				$ 0				$ 0
Future payment | Revolving Credit Facility | Tranche Term Facility
Debt Instrument [Line Items]
Repayment of term loan		$ 260,000,000	$ 5,000,000				$ 7,500,000		$ 10,000,000
Actual
Debt Instrument [Line Items]
Leverage Ratio (maximum)				2.15	1.97	1.62
Interest Coverage Ratio (minimum)				11.48	12.44	15.38

Long-Term Debt and Financing 40

Long-Term Debt and Financing Arrangements - Financial Ratios under Senior Credit Facility (Details)	3 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Required
Financial Ratios Under Senior Credit Facility [Line Items]
Leverage Ratio (maximum)	3.5	3.5	3.5
Interest Coverage Ratio (minimum)	2.75	2.75	2.75
Actual
Financial Ratios Under Senior Credit Facility [Line Items]
Leverage Ratio (maximum)	2.15	1.97	1.62
Interest Coverage Ratio (minimum)	11.48	12.44	15.38

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ 16	$ (70)	$ 41	$ 3
Income tax benefit related to valuation allowance	12		12
Net tax expense (benefit) for prior year tax adjustments		$ 105		$ (106)
Tax expense reduction related to antitrust settlement accrual			50
Reasonably possible change in unrecognized tax benefits	$ 5		$ 5

Accounts Receivable Securitiz42

Accounts Receivable Securitization - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)bank	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)bank	Sep. 30, 2016USD ($)	Apr. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Transfers of Servicing of Financial Assets [Line Items]
Number of commercial banks with accounts receivable securitization programs | bank	3		3
Term of commitments (in years)			1 year
Term of commitments, cancellation period (in days)			90 days
US
Transfers of Servicing of Financial Assets [Line Items]
Outstanding third party investments in securitized accounts receivable bank program	$ 50		$ 50			$ 30
Securitization interest expense	1	$ 1	3	$ 2
Europe
Transfers of Servicing of Financial Assets [Line Items]
Outstanding third party investments in securitized accounts receivable bank program	212		212			$ 160
Loss on sale of trade accounts receivable	$ 2	$ 2	$ 4	$ 4
Financing cost related to sale of securitized receivables percentage			1.00%	2.00%
Amended and Extended Accounts Receivable Securitization Program
Transfers of Servicing of Financial Assets [Line Items]
North American program maximum facility size					$ 155
Additional Financing from second priority facility					$ 25

Restructuring and Other Charg43

Restructuring and Other Charges - Additional Information (Details) - USD ($) $ in Millions	May 12, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring cost		$ 20	$ 7	$ 52	$ 26	$ 36
Non Cash Charges Related To Restructuring Activity		1		3	5	6
Restructuring and related cost allowed to be excluded from the calculation of financial covenant ratios	$ 35
Charges allowed to be excluded under debt agreement, 2018	25
Charges allowed to be excluded under debt agreement, 2019				25
Charges allowed to be excluded under debt agreement, 2020	25
Charges allowed to be excluded under debt agreement, 2021	25
Charges allowed to be excluded under debt agreement, 2022	25
Restructuring and related cost and litigation costs allowed to be excluded from the calculation of financial covenant ratios	$ 150			181
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Restructuring cost		8	3	31	9	17
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring cost		11	$ 4	18	12	12
Engineering Expense
Restructuring Cost and Reserve [Line Items]
Restructuring cost						1
Other Expense
Restructuring Cost and Reserve [Line Items]
Restructuring cost					2	2
Depreciation and Amortization
Restructuring Cost and Reserve [Line Items]
Restructuring cost		1		3	$ 3	$ 4
Australia
Restructuring Cost and Reserve [Line Items]
Non Cash Charges Related To Restructuring Activity		1		2
Reduction in Structural Costs | Australia
Restructuring Cost and Reserve [Line Items]
Restructuring cost		$ 9		$ 21

Restructuring and Other Charg44

Restructuring and Other Charges - Roll Forward of Restructuring Reserve (Details) - Severance $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Restructuring Reserve [Roll Forward]
Restructuring Reserve	$ 15
Restructuring charges	38
Cash Payments	(18)
Impact of exchange rates	2
Restructuring Reserve	$ 37

Environmental Matters, Litiga45

Environmental Matters, Litigation and Product Warranties - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2017USD ($)defendentcasefederal_superfund_site	Jun. 30, 2017USD ($)
Environmental Matters, Litigation and Product Warranties [Abstract]
Number of Federal Super Fund sites | federal_superfund_site		1
Environmental remediation accrual, discounted basis	$ 14	$ 14
Portion of environmental remediation costs recorded in other current liabilities	2	2
Portion of environmental remediation costs recorded in deferred credits and other liabilities	$ 12	$ 12
Weighted average discount rate	2.30%	2.30%
Environmental remediation accrual, undiscounted basis	$ 17	$ 17
Environmental Remediation, 2017	1	1
Environmental Remediation, 2018	1	1
Environmental Remediation, 2019	1	1
Environmental Remediation, 2020	1	1
Environmental Remediation, 2021	1	1
Environmental Remediation, Thereafter	12	$ 12
Litigation reserve			$ 132
Payments for litigation	$ 45
Number of legal cases (less than) | case		500
Number of defendants in many asbestos related cases | defendent		100

Environmental Matters, Litiga46

Environmental Matters, Litigation and Product Warranties - Warranty Accrual Rollforward (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning Balance	$ 20	$ 23
Accruals related to product warranties	13	6
Reductions for payments made	(8)	(10)
Ending Balance	$ 25	$ 19

Earnings Per Share - Summary of

Earnings Per Share - Summary of Earnings Per Share of Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basic earnings per share —
Net income attributable to Tenneco Inc.	$ 83	$ 179	$ 139	$ 318
Weighted Average shares of common stock outstanding (in shares)	52,508,078	55,679,969	53,265,149	56,511,838
Earnings per share of common stock (in dollars per share)	$ 1.57	$ 3.22	$ 2.61	$ 5.63
Diluted earnings per share —
Net income attributable to Tenneco Inc.	$ 83	$ 179	$ 139	$ 318
Weighted Average shares of common stock outstanding (in shares)	52,508,078	55,679,969	53,265,149	56,511,838
Effect of dilutive securities:
Restricted stock (in shares)	89,666	207,707	106,320	144,145
Stock options (in shares)	89,912	278,033	130,395	302,464
Weighted Average shares of common stock outstanding including dilutive securities (in shares)	52,687,656	56,165,709	53,501,864	56,958,447
Earnings per share of common stock (in dollars per share)	$ 1.57	$ 3.19	$ 2.60	$ 5.58

Earnings Per Share - Additiona

Earnings Per Share - Additional Information (Details) - shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Anti-dilutive stock options	834	171,580

Common Stock - Additional Infor

Common Stock - Additional Information (Details) - USD ($)	Feb. 01, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Feb. 28, 2017	Jan. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016	Oct. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, decrease on earnings per share, basic (in dollars per share)							$ 0	$ 0	$ (0.01)	$ (0.01)
Share-based compensation, Decrease on earnings per share, diluted (in dollars per share)							$ 0	$ 0	$ 0.01	$ 0.01
Share-based Compensation							$ 1,000,000	$ 3,000,000	$ 12,000,000	$ 13,000,000
Tax benefit from options exercised									2,000,000	1,000,000
Total fair value of shares vested									$ 2,000,000	4,000,000
Treasury stock repurchased		13,966,381					13,966,381		13,966,381		13,966,381	11,655,938
Dividend declared (in dollars per share)	$ 0.25
Annual divided declared (in dollars per share)	$ 1
Dividend paid (in dollars per share)		$ 0.25	$ 0.25	$ 0.25
Cash dividends paid		$ 14,000,000	$ 13,000,000	$ 13,000,000			$ 14,000,000	0	$ 40,000,000	0
Equity Option
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Compensation expense							1,000,000	1,000,000	1,000,000	1,000,000
Stock Option
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cash received from stock option exercises									7,000,000	4,000,000
Restricted Stock, Restricted Stock Units, Long Term Performance Units, SARs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation costs		19,000,000					19,000,000		$ 19,000,000		$ 19,000,000
Unrecognized compensation costs, not yet recognized									1 year 11 months 12 days
Share-based Compensation							2,000,000	$ 5,000,000	$ 10,000,000	14,000,000
Restricted Stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation costs		$ 10,000,000					$ 10,000,000		$ 10,000,000		$ 10,000,000
Unrecognized compensation costs, not yet recognized									1 year 11 months 10 days
Total fair value of restricted shares vested									$ 14,000,000	$ 9,000,000
Common Stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Amount authorized to repurchase					$ 400,000,000	$ 350,000,000							$ 200,000,000
Period of time to repurchase common stock					3 years	3 years
Previous authorized amount to repurchase					$ 112,000,000
Number of shares repurchased									2,300,000		10,700,000
Value of shares reprchased									$ 131,000,000		$ 569,000,000

Common Stock - Stock Options St

Common Stock - Stock Options Status and Activity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Shares Under Option
Outstanding, Beginning Balance (in shares)	434,821	438,341	606,525	606,525
Canceled (in shares)			(2,214)
Forfeited (in shares)	(41,369)	(278)	(1,107)
Exercised (in shares)	(50,125)	(3,242)	(164,863)
Outstanding, Ending Balance (in shares)	343,327	434,821	438,341	343,327	606,525
Weighted Avg. Exercise Prices
Outstanding, Beginning Balance (in dollars per share)	$ 40.16	$ 40.22	$ 38.54	$ 38.54
Canceled (in dollars per share)			56.23
Forfeited (in dollars per share)	19.53	66.54	56.23
Exercised (in dollars per share)	34.79	45.42	33.70
Outstanding, Ending Balance (in dollars per share)	$ 43.44	$ 40.16	$ 40.22	$ 43.44	$ 38.54
Weighted Avg. Remaining Life in Years		2 years 5 months 6 days	2 years 7 months 6 days	2 years 5 months 6 days	2 years 7 months 6 days
Aggregate Intrinsic Value, Outstanding, Beginning Balance	$ 8	$ 11	$ 12	$ 12
Aggregate Intrinsic Value, Exercised	1	0	5
Aggregate Intrinsic Value, Outstanding, Ending Balance	$ 4	$ 8	$ 11	$ 4	$ 12

Common Stock - Nonvested Restri

Common Stock - Nonvested Restricted Shares (Details) - Restricted Stock - $ / shares	3 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Nonvested Restricted Shares
Nonvested, Beginning Balance (in shares)	449,290	447,602	591,416
Granted (in shares)	2,001	23,295	182,543
Vested (in shares)	(4,581)	(15,336)	(261,003)
Forfeited (in shares)	(10,234)	(6,271)	(65,354)
Nonvested, Ending Balance (in shares)	436,476	449,290	447,602
Weighted Avg. Grant Date Fair Value
Nonvested, Beginning Balance (in dollars per share)	$ 49.79	$ 49.25	$ 44.63
Granted (in dollars per share)	55.80	57.22	68.04
Vested (in dollars per share)	55.52	46.77	50.95
Forfeited (in dollars per share)	44.82	48.10	53.12
Nonvested, Ending Balance (in dollars per share)	$ 49.87	$ 49.79	$ 49.25

Pension Plans, Postretirement52

Pension Plans, Postretirement and Other Employee Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
US | Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	$ 1	$ 1	$ 1	$ 1
Interest cost	2	4	7	13
Expected return on plan assets	(4)	(6)	(11)	(18)
Settlement loss			6	0
Net amortization:
Actuarial loss	1	2	4	6
Prior service cost (credit)	0	0	0	0
Net pension and postretirement costs	0	1	7	2
US | Postretirement
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	0	0	0	0
Interest cost	1	1	4	4
Expected return on plan assets	0	0	0	0
Settlement loss			0	0
Net amortization:
Actuarial loss	2	2	5	4
Prior service cost (credit)	0	(1)	(1)	(1)
Net pension and postretirement costs	3	2	8	7
Foreign | Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	3	2	7	6
Interest cost	4	4	10	11
Expected return on plan assets	(4)	(5)	(19)	(15)
Settlement loss			0	0
Net amortization:
Actuarial loss	1	1	6	5
Prior service cost (credit)	1	1	1	1
Net pension and postretirement costs	$ 5	$ 3	$ 5	$ 8

Pension Plans, Postretirement53

Pension Plans, Postretirement and Other Employee Benefits - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Pension
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Employer contributions, remainder of fiscal year	$ 10
Other Pension Plan
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Employer contributions	10
Non-cash contribution expense	6
Postretirement
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Employer contributions	8
Employer contributions, remainder of fiscal year	2
US | Pension
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Employer contributions	12
Foreign | Pension
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Employer contributions	$ 10

Pension Plans, Postretirement54

Pension Plans, Postretirement and Other Employee Benefits - Amounts Recognized for Pension and Postretirement Benefits in Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Before-Tax Amount
Amortization of prior service cost included in net periodic pension and postretirement cost	$ 1	$ 0
Amortization of actuarial loss included in net periodic pension and postretirement cost	4	5	$ 15	$ 15
Settlement Charge			6	0
Other comprehensive income – pension benefits	5	5	21	15
Tax Benefit
Amortization of prior service cost included in net periodic pension and postretirement cost	0	0
Amortization of actuarial loss included in net periodic pension and postretirement cost	(2)	(1)	(5)	(4)
Settlement Charge			(2)	0
Other comprehensive income – pension benefits	(2)	(1)	(7)	(4)
Net-of-Tax Amount
Amortization of prior service cost included in net periodic pension and postretirement cost	1	0
Amortization of actuarial loss included in net periodic pension and postretirement cost	2	4	10	11
Settlement Charge			4	0
Other comprehensive income – pension benefits	$ 3	$ 4	$ 14	$ 11

New Accounting Pronouncements55

New Accounting Pronouncements (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Accounting Policies [Abstract]
Excess tax benefit	$ 2

Segment Information - Additiona

Segment Information - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017product_segmentgeographic_segmentSegmentoperating_segment
Segment Reporting [Abstract]
Number of product segments | product_segment	2
Number of geographic areas | geographic_segment	3
Number of operating segments | operating_segment	6
Number of reportable segments | Segment	6

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting [Line Items]
Revenues from external customers	$ 2,274	$ 2,096	$ 6,883	$ 6,444
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	134	150	282	445
Total assets	4,935	4,410	4,935	4,410	$ 4,346
Intersegment Revenues
Segment Reporting [Line Items]
Revenues	0	0	0	0
Reclass and Elims
Segment Reporting [Line Items]
Revenues from external customers	0	0	0	0
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	0	0	0	0
Total assets	59	47	59	47
Reclass and Elims | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	(36)	(49)	(129)	(146)
Clean Air Division | North America
Segment Reporting [Line Items]
Revenues from external customers	723	716	2,341	2,252
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	46	42	153	168
Total assets	1,504	1,390	1,504	1,390
Clean Air Division | North America | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	5	4	13	9
Clean Air Division | Europe South America And India
Segment Reporting [Line Items]
Revenues from external customers	536	474	1,620	1,462
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	25	29	79	72
Total assets	882	810	882	810
Clean Air Division | Europe South America And India | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	7	24	38	71
Clean Air Division | Asia Pacific
Segment Reporting [Line Items]
Revenues from external customers	313	270	861	813
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	36	39	91	110
Total assets	751	625	751	625
Clean Air Division | Asia Pacific | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	0	1	3	2
Ride Performance Division | North America
Segment Reporting [Line Items]
Revenues from external customers	304	306	945	952
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	29	37	100	127
Total assets	761	727	761	727
Ride Performance Division | North America | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	2	2	8	6
Ride Performance Division | Europe South America And India
Segment Reporting [Line Items]
Revenues from external customers	279	229	786	689
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	6	8	19	12
Total assets	590	478	590	478
Ride Performance Division | Europe South America And India | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	6	6	23	21
Ride Performance Division | Asia Pacific
Segment Reporting [Line Items]
Revenues from external customers	119	101	330	276
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	11	17	45	43
Total assets	388	333	388	333
Ride Performance Division | Asia Pacific | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	16	12	44	37
Other
Segment Reporting [Line Items]
Revenues from external customers	0	0	0	0
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	(19)	(22)	(205)	(87)
Total assets	0	0	0	0
Other | Intersegment Revenues
Segment Reporting [Line Items]
Revenues	$ 0	$ 0	$ 0	$ 0

Supplemental Guarantor Conden58

Supplemental Guarantor Condensed Consolidating Financial Statements - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Ownership percentage of existing and future material domestic owned subsidiaries	100.00%

Supplemental Guarantor Conden59

Supplemental Guarantor Condensed Consolidating Financial Statements - Statement of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net sales and operating revenues —
External	$ 2,274	$ 2,096	$ 6,883	$ 6,444
Affiliated companies	0	0	0	0
Net sales and operating revenues	2,274	2,096	6,883	6,444
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,913	1,743	5,790	5,329
Engineering, research, and development	40	41	115	117
Selling, general, and administrative	128	109	529	390
Depreciation and amortization of other intangibles	58	53	165	159
Total costs and expenses	2,139	1,946	6,599	5,995
Other income (expense)
Loss on sale of receivables	(2)	(2)	(4)	(4)
Other income (expense)	1	2	2	0
Total other income (expense)	(1)	0	(2)	(4)
Earnings before interest expense, income taxes, and noncontrolling interests	134	150	282	445
Interest expense —
External (net of interest capitalized)	19	24	54	76
Affiliated companies (net of interest income)	0	0	0	0
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	115	126	228	369
Income tax (benefit) expense	16	(70)	41	3
Equity in net income (loss) from affiliated companies	0	0	0	0
Net income	99	196	187	366
Less: Net income attributable to noncontrolling interests	16	17	48	48
Net income attributable to Tenneco Inc.	83	179	139	318
Comprehensive income (loss) attributable to Tenneco Inc.	114	184	234	333
Reclass and Elims
Net sales and operating revenues —
External	0	0	0	0
Affiliated companies	(271)	(317)	(910)	(958)
Net sales and operating revenues	(271)	(317)	(910)	(958)
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	(271)	(317)	(910)	(958)
Engineering, research, and development	0	0	0	0
Selling, general, and administrative	0	0	0	0
Depreciation and amortization of other intangibles	0	0	0	0
Total costs and expenses	(271)	(317)	(910)	(958)
Other income (expense)
Loss on sale of receivables	0	0	0	0
Other income (expense)	0	0	(15)	(15)
Total other income (expense)	0	0	(15)	(15)
Earnings before interest expense, income taxes, and noncontrolling interests	0	0	(15)	(15)
Interest expense —
External (net of interest capitalized)	0	0	0	0
Affiliated companies (net of interest income)	0	0	0	0
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	0	0	(15)	(15)
Income tax (benefit) expense	0	0	0	0
Equity in net income (loss) from affiliated companies	(126)	(237)	(304)	(514)
Net income	(126)	(237)	(319)	(529)
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Tenneco Inc.	(126)	(237)	(319)	(529)
Comprehensive income (loss) attributable to Tenneco Inc.	(120)	(237)	(313)	(529)
Guarantor Subsidiaries
Net sales and operating revenues —
External	917	928	2,958	2,929
Affiliated companies	128	134	413	389
Net sales and operating revenues	1,045	1,062	3,371	3,318
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	889	904	2,871	2,800
Engineering, research, and development	17	20	56	59
Selling, general, and administrative	51	48	310	174
Depreciation and amortization of other intangibles	23	23	65	65
Total costs and expenses	980	995	3,302	3,098
Other income (expense)
Loss on sale of receivables	(1)	(1)	(2)	(2)
Other income (expense)	(9)	(7)	(9)	(6)
Total other income (expense)	(10)	(8)	(11)	(8)
Earnings before interest expense, income taxes, and noncontrolling interests	55	59	58	212
Interest expense —
External (net of interest capitalized)	7	(1)	10	(1)
Affiliated companies (net of interest income)	(5)	(3)	(12)	(9)
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	53	63	60	222
Income tax (benefit) expense	(5)	(108)	6	(71)
Equity in net income (loss) from affiliated companies	31	33	119	118
Net income	89	204	173	411
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Tenneco Inc.	89	204	173	411
Comprehensive income (loss) attributable to Tenneco Inc.	89	204	173	411
Non-Guarantor Subsidiaries
Net sales and operating revenues —
External	1,357	1,168	3,925	3,515
Affiliated companies	143	183	497	569
Net sales and operating revenues	1,500	1,351	4,422	4,084
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,295	1,156	3,829	3,487
Engineering, research, and development	23	21	59	58
Selling, general, and administrative	77	61	219	215
Depreciation and amortization of other intangibles	35	30	100	94
Total costs and expenses	1,430	1,268	4,207	3,854
Other income (expense)
Loss on sale of receivables	(1)	(1)	(2)	(2)
Other income (expense)	10	9	26	21
Total other income (expense)	9	8	24	19
Earnings before interest expense, income taxes, and noncontrolling interests	79	91	239	249
Interest expense —
External (net of interest capitalized)	2	1	4	3
Affiliated companies (net of interest income)	3	2	6	6
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	74	88	229	240
Income tax (benefit) expense	21	38	35	74
Equity in net income (loss) from affiliated companies	0	0	0	0
Net income	53	50	194	166
Less: Net income attributable to noncontrolling interests	16	17	48	48
Net income attributable to Tenneco Inc.	37	33	146	118
Comprehensive income (loss) attributable to Tenneco Inc.	31	33	140	118
Tenneco Inc
Net sales and operating revenues —
External	0	0	0	0
Affiliated companies	0		0	0
Net sales and operating revenues	0	0	0	0
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	0	0	0	0
Engineering, research, and development	0	0	0	0
Selling, general, and administrative	0	0	0	1
Depreciation and amortization of other intangibles	0	0	0	0
Total costs and expenses	0	0	0	1
Other income (expense)
Loss on sale of receivables	0	0	0	0
Other income (expense)	0	0	0	0
Total other income (expense)	0	0	0	0
Earnings before interest expense, income taxes, and noncontrolling interests	0	0	0	(1)
Interest expense —
External (net of interest capitalized)	10	24	40	74
Affiliated companies (net of interest income)	2	1	6	3
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	(12)	(25)	(46)	(78)
Income tax (benefit) expense	0	0	0	0
Equity in net income (loss) from affiliated companies	95	204	185	396
Net income	83	179	139	318
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Tenneco Inc.	83	179	139	318
Comprehensive income (loss) attributable to Tenneco Inc.	$ 114	$ 184	$ 234	$ 333

Supplemental Guarantor Conden60

Supplemental Guarantor Condensed Consolidating Financial Statements - Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 277	$ 333	$ 347	$ 324	$ 311	$ 287
Restricted cash	2		2
Receivables, net	1,475		1,294
Inventories	882		730
Prepayments and other	325		229
Total current assets	2,961		2,602
Other assets:
Investment in affiliated companies	0		0
Notes and advances receivable from affiliates	0		0
Long-term receivables, net	9		9
Goodwill	59		57
Intangibles, net	17		19
Deferred income taxes	225		199
Other	123		103
Total other assets	433		387
Plant, property, and equipment, at cost	3,967		3,548
Less — Accumulated depreciation and amortization	(2,426)		(2,191)
Plant, property and equipment, net	1,541		1,357
Total Assets	4,935		4,346	4,410
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	108		90
Short-term debt — affiliated	0		0
Accounts payable	1,601		1,501
Accrued taxes	46		39
Other	477		343
Total current liabilities	2,232		1,973
Long-term debt — non-affiliated	1,573		1,294
Long-term debt — affiliated	0		0
Deferred income taxes	6		7
Postretirement benefits and other liabilities	406		412
Commitments and contingencies
Total liabilities	4,217		3,686
Redeemable noncontrolling interests	32		40	32		41
Tenneco Inc. shareholders’ equity	647		573
Noncontrolling interests	39		47
Total equity	686		620	659
Total liabilities, redeemable noncontrolling interests and equity	4,935		4,346
Reclass and Elims
Current assets:
Cash and cash equivalents	0	0	0	0	0	0
Restricted cash	0		0
Receivables, net	(722)		(504)
Inventories	0		0
Prepayments and other	0		0
Total current assets	(722)		(504)
Other assets:
Investment in affiliated companies	(2,773)		(2,420)
Notes and advances receivable from affiliates	(23,550)		(22,249)
Long-term receivables, net	0		0
Goodwill	0		0
Intangibles, net	0		0
Deferred income taxes	0		0
Other	0		0
Total other assets	(26,323)		(24,669)
Plant, property, and equipment, at cost	0		0
Less — Accumulated depreciation and amortization	0		0
Plant, property and equipment, net	0		0
Total Assets	(27,045)		(25,173)
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	0		0
Short-term debt — affiliated	(549)		(354)
Accounts payable	(91)		(88)
Accrued taxes	0		0
Other	(82)		(62)
Total current liabilities	(722)		(504)
Long-term debt — non-affiliated	0		0
Long-term debt — affiliated	(23,550)		(22,249)
Deferred income taxes	0		0
Postretirement benefits and other liabilities	0		0
Commitments and contingencies
Total liabilities	(24,272)		(22,753)
Redeemable noncontrolling interests	0		0
Tenneco Inc. shareholders’ equity	(2,773)		(2,420)
Noncontrolling interests	0		0
Total equity	(2,773)		(2,420)
Total liabilities, redeemable noncontrolling interests and equity	(27,045)		(25,173)
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	4	4	9	0	2	2
Restricted cash	0		0
Receivables, net	619		386
Inventories	394		361
Prepayments and other	104		62
Total current assets	1,121		818
Other assets:
Investment in affiliated companies	1,256		1,213
Notes and advances receivable from affiliates	968		939
Long-term receivables, net	8		9
Goodwill	22		22
Intangibles, net	6		7
Deferred income taxes	101		47
Other	62		46
Total other assets	2,423		2,283
Plant, property, and equipment, at cost	1,463		1,371
Less — Accumulated depreciation and amortization	(937)		(895)
Plant, property and equipment, net	526		476
Total Assets	4,070		3,577
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	0		0
Short-term debt — affiliated	398		167
Accounts payable	594		562
Accrued taxes	45		4
Other	224		147
Total current liabilities	1,261		880
Long-term debt — non-affiliated	846		0
Long-term debt — affiliated	706		1,543
Deferred income taxes	0		0
Postretirement benefits and other liabilities	275		297
Commitments and contingencies
Total liabilities	3,088		2,720
Redeemable noncontrolling interests	0		0
Tenneco Inc. shareholders’ equity	982		857
Noncontrolling interests	0		0
Total equity	982		857
Total liabilities, redeemable noncontrolling interests and equity	4,070		3,577
Nonguarantor Subsidiaries
Current assets:
Cash and cash equivalents	273	329	338	324	309	285
Restricted cash	2		2
Receivables, net	1,578		1,412
Inventories	488		369
Prepayments and other	221		167
Total current assets	2,562		2,288
Other assets:
Investment in affiliated companies	0		0
Notes and advances receivable from affiliates	18,572		16,529
Long-term receivables, net	1		0
Goodwill	37		35
Intangibles, net	11		12
Deferred income taxes	36		23
Other	61		49
Total other assets	18,718		16,648
Plant, property, and equipment, at cost	2,504		2,177
Less — Accumulated depreciation and amortization	(1,489)		(1,296)
Plant, property and equipment, net	1,015		881
Total Assets	22,295		19,817
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	93		75
Short-term debt — affiliated	151		187
Accounts payable	1,098		1,027
Accrued taxes	1		35
Other	326		243
Total current liabilities	1,669		1,567
Long-term debt — non-affiliated	13		12
Long-term debt — affiliated	18,614		16,466
Deferred income taxes	6		7
Postretirement benefits and other liabilities	131		115
Commitments and contingencies
Total liabilities	20,433		18,167
Redeemable noncontrolling interests	32		40
Tenneco Inc. shareholders’ equity	1,791		1,563
Noncontrolling interests	39		47
Total equity	1,830		1,610
Total liabilities, redeemable noncontrolling interests and equity	22,295		19,817
Tenneco Inc
Current assets:
Cash and cash equivalents	0	$ 0	0	$ 0	$ 0	$ 0
Restricted cash	0		0
Receivables, net	0		0
Inventories	0		0
Prepayments and other	0		0
Total current assets	0		0
Other assets:
Investment in affiliated companies	1,517		1,207
Notes and advances receivable from affiliates	4,010		4,781
Long-term receivables, net	0		0
Goodwill	0		0
Intangibles, net	0		0
Deferred income taxes	88		129
Other	0		8
Total other assets	5,615		6,125
Plant, property, and equipment, at cost	0		0
Less — Accumulated depreciation and amortization	0		0
Plant, property and equipment, net	0		0
Total Assets	5,615		6,125
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	15		15
Short-term debt — affiliated	0		0
Accounts payable	0		0
Accrued taxes	0		0
Other	9		15
Total current liabilities	24		30
Long-term debt — non-affiliated	714		1,282
Long-term debt — affiliated	4,230		4,240
Deferred income taxes	0		0
Postretirement benefits and other liabilities	0		0
Commitments and contingencies
Total liabilities	4,968		5,552
Redeemable noncontrolling interests	0		0
Tenneco Inc. shareholders’ equity	647		573
Noncontrolling interests	0		0
Total equity	647		573
Total liabilities, redeemable noncontrolling interests and equity	$ 5,615		$ 6,125

Supplemental Guarantor Conden61

Supplemental Guarantor Condensed Consolidating Financial Statements - Statement of Cash Flows (Details) - USD ($) $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Operating Activities
Net cash provided (used) by operating activities				$ 53	$ 130	$ 163	$ 233
Investing Activities
Proceeds from sale of equity interest				0	0	9	0
Proceeds from sale of assets				0	1	6	4
Cash payments for plant, property, and equipment				(90)	(74)	(283)	(213)
Cash payments for software related intangible assets				(5)	(6)	(17)	(15)
Changes in restricted cash				0	1	0	(1)
Other				(1)	0	(5)	0
Net cash used by investing activities				(96)	(78)	(290)	(225)
Financing Activities
Issuance (repurchase) of common shares				1	5	(2)	7
Cash dividends	$ (14)	$ (13)	$ (13)	(14)	0	(40)	0
Issuance of common shares				1	5		7
Retirement of long-term debt - net				(1)	(179)	(9)	(527)
Issuance of long-term debt - net				0	2	136	508
Debt issuance cost of long-term debt				0	0	(8)	(8)
Purchase of common stock under the share repurchase program				(71)	(89)	(131)	(146)
Net increase (decrease) in bank overdrafts				(3)	(1)	(12)	4
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt				84	198	144	223
Net increase (decrease) in short-term borrowings secured by accounts receivable					50	20	20
Intercompany dividend payments and net increase (decrease) in intercompany obligations				0	0	0	0
Distributions to noncontrolling interest partners				(12)	(28)	(45)	(55)
Net cash provided (used) by financing activities				(16)	(42)	53	26
Effect of foreign exchange rate changes on cash and cash equivalents				3	3	4	3
Increase (decrease) in cash and cash equivalents				(56)	13	(70)	37
Cash and cash equivalents, July 1 and January 1, respectively				333	311	347	287
Cash and cash equivalents, September 30 (Note)	277	333		277	324	277	324
Reclass and Elims
Operating Activities
Net cash provided (used) by operating activities				(4)	(4)	(11)	(15)
Investing Activities
Proceeds from sale of equity interest						0
Proceeds from sale of assets					0	0	0
Cash payments for plant, property, and equipment				0	0	0	0
Cash payments for software related intangible assets				0	0	0	0
Changes in restricted cash					0		0
Other				0		0
Net cash used by investing activities				0	0	0	0
Financing Activities
Issuance (repurchase) of common shares						0
Cash dividends				0		0
Issuance of common shares				0	0		0
Retirement of long-term debt - net				0	0	0	0
Issuance of long-term debt - net					0	0	0
Debt issuance cost of long-term debt						0	0
Purchase of common stock under the share repurchase program				0	0	0	0
Net increase (decrease) in bank overdrafts				0	0	0	0
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt				0	0	0	0
Net increase (decrease) in short-term borrowings secured by accounts receivable					0	0	0
Intercompany dividend payments and net increase (decrease) in intercompany obligations				4	4	11	15
Distributions to noncontrolling interest partners				0	0	0	0
Net cash provided (used) by financing activities				4	4	11	15
Effect of foreign exchange rate changes on cash and cash equivalents				0	0	0	0
Increase (decrease) in cash and cash equivalents				0	0	0	0
Cash and cash equivalents, July 1 and January 1, respectively				0	0	0	0
Cash and cash equivalents, September 30 (Note)	0	0		0	0	0	0
Guarantor Subsidiaries
Operating Activities
Net cash provided (used) by operating activities				39	170	102	113
Investing Activities
Proceeds from sale of equity interest						0
Proceeds from sale of assets					1	3	1
Cash payments for plant, property, and equipment				(29)	(29)	(110)	(72)
Cash payments for software related intangible assets				(4)	(6)	(10)	(10)
Changes in restricted cash					0		0
Other				(1)		(5)
Net cash used by investing activities				(34)	(34)	(122)	(81)
Financing Activities
Issuance (repurchase) of common shares						0
Cash dividends				0		0
Issuance of common shares				0	0		0
Retirement of long-term debt - net				0	0	0	0
Issuance of long-term debt - net					0	400	0
Debt issuance cost of long-term debt						(8)	0
Purchase of common stock under the share repurchase program				0	0	0	0
Net increase (decrease) in bank overdrafts				0	0	0	0
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt				82	0	451	0
Net increase (decrease) in short-term borrowings secured by accounts receivable					0	0	0
Intercompany dividend payments and net increase (decrease) in intercompany obligations				(87)	(137)	(828)	(34)
Distributions to noncontrolling interest partners				0	0	0	0
Net cash provided (used) by financing activities				(5)	(137)	15	(34)
Effect of foreign exchange rate changes on cash and cash equivalents				0	(1)	0	0
Increase (decrease) in cash and cash equivalents				0	(2)	(5)	(2)
Cash and cash equivalents, July 1 and January 1, respectively				4	2	9	2
Cash and cash equivalents, September 30 (Note)	4	4		4	0	4	0
Non-Guarantor Subsidiaries
Operating Activities
Net cash provided (used) by operating activities				26	(17)	101	187
Investing Activities
Proceeds from sale of equity interest						9
Proceeds from sale of assets					0	3	3
Cash payments for plant, property, and equipment				(61)	(45)	(173)	(141)
Cash payments for software related intangible assets				(1)	0	(7)	(5)
Changes in restricted cash					1		(1)
Other				0		0
Net cash used by investing activities				(62)	(44)	(168)	(144)
Financing Activities
Issuance (repurchase) of common shares						0
Cash dividends				0		0
Issuance of common shares				0	0		0
Retirement of long-term debt - net				(1)	0	(3)	(16)
Issuance of long-term debt - net					2	0	8
Debt issuance cost of long-term debt						0	0
Purchase of common stock under the share repurchase program				0	0	0	0
Net increase (decrease) in bank overdrafts				(3)	(1)	(12)	4
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt				2	46	16	36
Net increase (decrease) in short-term borrowings secured by accounts receivable					0	0	0
Intercompany dividend payments and net increase (decrease) in intercompany obligations				(9)	54	42	16
Distributions to noncontrolling interest partners				(12)	(28)	(45)	(55)
Net cash provided (used) by financing activities				(23)	73	(2)	(7)
Effect of foreign exchange rate changes on cash and cash equivalents				3	3	4	3
Increase (decrease) in cash and cash equivalents				(56)	15	(65)	39
Cash and cash equivalents, July 1 and January 1, respectively				329	309	338	285
Cash and cash equivalents, September 30 (Note)	273	329		273	324	273	324
Tenneco Inc
Operating Activities
Net cash provided (used) by operating activities				(8)	(19)	(29)	(52)
Investing Activities
Proceeds from sale of equity interest						0
Proceeds from sale of assets					0	0	0
Cash payments for plant, property, and equipment				0	0	0	0
Cash payments for software related intangible assets				0	0	0	0
Changes in restricted cash					0		0
Other				0		0
Net cash used by investing activities				0	0	0	0
Financing Activities
Issuance (repurchase) of common shares						(2)
Cash dividends				(14)		(40)
Issuance of common shares				1	5		7
Retirement of long-term debt - net				0	(179)	(6)	(511)
Issuance of long-term debt - net					0	(264)	500
Debt issuance cost of long-term debt						0	(8)
Purchase of common stock under the share repurchase program				(71)	(89)	(131)	(146)
Net increase (decrease) in bank overdrafts				0	0	0	0
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt				0	152	(323)	187
Net increase (decrease) in short-term borrowings secured by accounts receivable					50	20	20
Intercompany dividend payments and net increase (decrease) in intercompany obligations				92	79	775	3
Distributions to noncontrolling interest partners				0	0	0	0
Net cash provided (used) by financing activities				8	18	29	52
Effect of foreign exchange rate changes on cash and cash equivalents				0	1	0	0
Increase (decrease) in cash and cash equivalents				0	0	0	0
Cash and cash equivalents, July 1 and January 1, respectively				0	0	0	0
Cash and cash equivalents, September 30 (Note)	$ 0	$ 0		$ 0	$ 0	$ 0	$ 0

Revision of Previously Issued62

Revision of Previously Issued Financial Statements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		15 Months Ended	48 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017	Mar. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Increase (decrease) in accrued taxes	$ 16	$ 0	$ (22)	$ 9
Cost of sales	1,913	1,743	5,790	5,329
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Increase (decrease) in accrued taxes		(1)		(1)
Cost of sales		2		8
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Increase (decrease) in accrued taxes		1		10
Cost of sales		$ 1,741		$ 5,321
Lump Sum Payments Immediately Recognized, Should Have Been Deferred And Amortized | Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales						$ 34
Deferred charges	$ 25		$ 25
AccrualsForSubstrateLiabilitiesAndAssociatedCostOfSales [Member] | Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales					$ 7

Revision of Previously Issued63

Revision of Previously Issued Financial Statements - Income Statement (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales (exclusive of depreciation and amortization shown below)	$ 1,913	$ 1,743	$ 5,790	$ 5,329
Earnings before interest expense, income taxes, and noncontrolling interests	134	150	282	445
Earnings before income taxes and noncontrolling interests	115	126	228	369
Income tax (benefit) expense	16	(70)	41	3
Net income	99	196	187	366
Less: Net income attributable to noncontrolling interests	16	17	48	48
Net income attributable to Tenneco Inc.	$ 83	$ 179	$ 139	$ 318
Basic earnings per share of common stock (in dollars per share)	$ 1.57	$ 3.22	$ 2.61	$ 5.63
Diluted earnings per share of common stock (in dollars per share)	$ 1.57	$ 3.19	$ 2.60	$ 5.58
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales (exclusive of depreciation and amortization shown below)		$ 1,741		$ 5,321
Earnings before interest expense, income taxes, and noncontrolling interests		152		453
Earnings before income taxes and noncontrolling interests		128		377
Income tax (benefit) expense		(69)		5
Net income		197		372
Less: Net income attributable to noncontrolling interests				49
Net income attributable to Tenneco Inc.		$ 180		$ 323
Basic earnings per share of common stock (in dollars per share)		$ 3.24		$ 5.72
Diluted earnings per share of common stock (in dollars per share)		$ 3.21		$ 5.67
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales (exclusive of depreciation and amortization shown below)		$ 2		$ 8
Earnings before interest expense, income taxes, and noncontrolling interests		(2)		(8)
Earnings before income taxes and noncontrolling interests		(2)		(8)
Income tax (benefit) expense		(1)		(2)
Net income		(1)		(6)
Less: Net income attributable to noncontrolling interests				(1)
Net income attributable to Tenneco Inc.		$ (1)		$ (5)
Basic earnings per share of common stock (in dollars per share)		$ (0.02)		$ (0.09)
Diluted earnings per share of common stock (in dollars per share)		$ (0.02)		$ (0.09)

Revision of Previously Issued64

Revision of Previously Issued Financial Statements - Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Tenneco Inc.
Net Income	$ 83	$ 179	$ 139	$ 318
Comprehensive Income	114	184	234	333
Noncontrolling Interests
Net Income	16	17	48	48
Comprehensive Income	17	17	52	47
Total
Net Income	99	196	187	366
Other Comprehensive Income	32	5	99	14
Comprehensive Income	131	201	286	380
As Reported
Tenneco Inc.
Net Income		180		323
Noncontrolling Interests
Net Income				49
Total
Net Income		197		372
Other Comprehensive Income		5		14
Comprehensive Income		202		386
Adjustment
Tenneco Inc.
Net Income		(1)		(5)
Noncontrolling Interests
Net Income				(1)
Total
Net Income		(1)		(6)
Other Comprehensive Income		0		0
Comprehensive Income		(1)		(6)
Tenneco Inc.
Tenneco Inc.
Net Income		179		318
Other Comprehensive Income		5		15
Comprehensive Income		184		333
Total
Other Comprehensive Income	31	5	95	15
Tenneco Inc. | As Reported
Tenneco Inc.
Net Income		180		323
Other Comprehensive Income		5		15
Comprehensive Income		185		338
Tenneco Inc. | Adjustment
Tenneco Inc.
Net Income		(1)		(5)
Other Comprehensive Income		0		0
Comprehensive Income		(1)		(5)
Noncontrolling Interests
Noncontrolling Interests
Net Income		17		48
Other Comprehensive Income		0		(1)
Comprehensive Income		17		47
Total
Other Comprehensive Income	$ 1	0	$ 4	(1)
Noncontrolling Interests | As Reported
Noncontrolling Interests
Net Income		17		49
Other Comprehensive Income		0		(1)
Comprehensive Income		17		48
Noncontrolling Interests | Adjustment
Noncontrolling Interests
Net Income		0		(1)
Other Comprehensive Income		0		0
Comprehensive Income		$ 0		$ (1)

Revision of Previously Issued65

Revision of Previously Issued Financial Statements - Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred income taxes	$ 225	$ 199
Total Assets	4,935	4,346	$ 4,410
Accounts payable	1,601	1,501
Accrued taxes	46	39
Deferred credits and other liabilities	158	139
Redeemable noncontrolling interests	32	40	32	$ 41
Retained earnings (accumulated deficit)	(1,001)	(1,100)
Total Tenneco Inc. shareholders’ equity	647	573
Noncontrolling interests	39	47
Total equity	686	620	659
Total liabilities, redeemable noncontrolling interests and equity	$ 4,935	$ 4,346
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity			675
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity			$ (16)

Revision of Previously Issued66

Revision of Previously Issued Financial Statements - Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income	$ 99	$ 196	$ 187	$ 366
Deferred income taxes	(1)	(86)	(1)	(74)
Increase (decrease) in payables	(29)	(5)	57	59
Increase (decrease) in accrued taxes	16	0	(22)	9
Changes in long-term liabilities	$ (6)	11	$ 1	13
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income		197		372
Deferred income taxes				(73)
Increase (decrease) in payables		(7)		55
Increase (decrease) in accrued taxes		1		10
Changes in long-term liabilities				9
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income		(1)		(6)
Deferred income taxes				(1)
Increase (decrease) in payables		2		4
Increase (decrease) in accrued taxes		$ (1)		(1)
Changes in long-term liabilities				$ 4

Revision of Previously Issued67

Revision of Previously Issued Financial Statements - Shareholders' Equity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 620
Net income attributable to Tenneco Inc.	$ 83	$ 179	139	$ 318
Other comprehensive loss			2	(1)
Ending balance	686	659	686	659
As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Tenneco Inc.		180		323
Ending balance		675		675
Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Tenneco Inc.		(1)		(5)
Ending balance		(16)		(16)
Retained Earnings (Accumulated Deficit)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(1,100)	(1,456)
Net income attributable to Tenneco Inc.			139	318
Ending balance	(1,001)	(1,138)	(1,001)	(1,138)
Retained Earnings (Accumulated Deficit) | As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				(1,448)
Net income attributable to Tenneco Inc.				323
Ending balance		(1,125)		(1,125)
Retained Earnings (Accumulated Deficit) | Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				(8)
Net income attributable to Tenneco Inc.				(5)
Ending balance		(13)		(13)
Tenneco Inc.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Tenneco Inc.		179		318
Ending balance	647	622	647	622
Tenneco Inc. | As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Tenneco Inc.		180		323
Ending balance		635		635
Tenneco Inc. | Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Tenneco Inc.		(1)		(5)
Ending balance		(13)		(13)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			47	39
Net income			21	20
Other comprehensive loss			2	0
Dividends declared			(31)	(22)
Ending balance	$ 39	37	$ 39	37
Noncontrolling Interests | As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				42
Net income				21
Other comprehensive loss				(1)
Dividends declared				(22)
Ending balance		40		40
Noncontrolling Interests | Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				(3)
Net income				(1)
Other comprehensive loss				1
Dividends declared				0
Ending balance		$ (3)		$ (3)