Tenneco (TEN) 10-Q 5 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Aug. 01, 2014
Document and Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Entity Registrant Name	'TENNECO INC	'
Entity Central Index Key	'0001024725	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	61,058,556

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues	'	'	'	'
Net sales and operating revenues	$2,241	$2,067	$4,335	$3,970
Costs and expenses	'	'	'	'
Cost of sales (exclusive of depreciation and amortization shown below)	1,851	1,736	3,605	3,340
Engineering, research, and development	42	33	84	68
Selling, general, and administrative	139	106	271	225
Depreciation and amortization of other intangibles	52	50	103	100
Costs and expenses	2,084	1,925	4,063	3,733
Other expense	'	'	'	'
Loss on sale of receivables	-1	-1	-2	-2
Other	0	0	-1	-1
Total other income (expense)	-1	-1	-3	-3
Earnings before interest expense, income taxes, and noncontrolling interests	156	141	269	234
Interest expense (net of interest capitalized of $1 million in both of the three months ended June 30, 2014 and 2013, and $2 million in both of the six months ended June 30, 2014 and 2013, respectively)	19	20	38	40
Earnings before income taxes and noncontrolling interests	137	121	231	194
Income tax expense	46	47	86	59
Net income	91	74	145	135
Less: Net income attributable to noncontrolling interests	10	11	18	18
Net income attributable to Tenneco Inc.	$81	$63	$127	$117
Weighted average shares of common stock outstanding —	'	'	'	'
Basic (in shares)	60,736,737	60,542,361	60,631,080	60,424,540
Diluted (in shares)	61,661,896	61,724,124	61,583,725	61,532,550
Basic earnings per share of common stock (in dollars per share)	$1.34	$1.04	$2.10	$1.94
Diluted earnings per share of common stock (in dollars per share)	$1.32	$1.02	$2.06	$1.91

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]	'	'	'	'
Capitalized interest	$1	$1	$2	$2

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'
Net Income	$91	$74	$145	$135
Translation of foreign currency statements	7	-24	-1	-50
Additional Liability for Pension and Postretirement Benefits, net of tax	3	6	6	10
Other Comprehensive Loss	10	-18	5	-40
Comprehensive Income	101	56	150	95
Cumulative Translation Adjustment	'	'	'	'
Beginning balance	-64	-45	-56	-19
Translation of foreign currency statements	7	-24	-1	-50
Ending balance	-57	-69	-57	-69
Additional Liability for Pension and Postretirement Benefits	'	'	'	'
Beginning balance	-296	-380	-299	-384
Additional Liability for Pension and Postretirement Benefits, net of tax	3	6	6	10
Ending balance	-293	-374	-293	-374
Balance June 30	-350	-443	-350	-443
Tenneco Inc.	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'
Net Income	81	63	127	117
Translation of foreign currency statements	6	-24	0	-50
Additional Liability for Pension and Postretirement Benefits, net of tax	3	6	6	10
Other Comprehensive Loss	9	-18	6	-40
Comprehensive Income	90	45	133	77
Cumulative Translation Adjustment	'	'	'	'
Beginning balance	-67	-50	-61	-24
Translation of foreign currency statements	6	-24	0	-50
Ending balance	-61	-74	-61	-74
Additional Liability for Pension and Postretirement Benefits	'	'	'	'
Beginning balance	-296	-380	-299	-384
Additional Liability for Pension and Postretirement Benefits, net of tax	3	6	6	10
Ending balance	-293	-374	-293	-374
Balance June 30	-354	-448	-354	-448
Noncontrolling Interests	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'
Net Income	10	11	18	18
Translation of foreign currency statements	1	0	-1	0
Other Comprehensive Loss	1	0	-1	0
Comprehensive Income	11	11	17	18
Cumulative Translation Adjustment	'	'	'	'
Beginning balance	3	5	5	5
Translation of foreign currency statements	1	0	-1	0
Ending balance	4	5	4	5
Additional Liability for Pension and Postretirement Benefits	'	'	'	'
Beginning balance	0	0	0	0
Ending balance	0	0	0	0
Balance June 30	$4	$5	$4	$5

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$260	$275
Restricted cash	5	5
Receivables —	'	'
Customer notes and accounts, net	1,334	1,041
Other	24	19
Inventories —	'	'
Finished goods	315	267
Work in process	238	202
Raw materials	149	130
Materials and supplies	59	57
Deferred income taxes	72	71
Prepayments and other	273	223
Total current assets	2,729	2,290
Other assets:	'	'
Long-term receivables, net	14	14
Goodwill	68	69
Intangibles, net	28	30
Deferred income taxes	121	125
Other	126	127
Total other assets	357	365
Plant, property, and equipment, at cost	3,617	3,498
Less — Accumulated depreciation and amortization	-2,386	-2,323
Plant, property and equipment, net	1,231	1,175
Total Assets	4,317	3,830
Current liabilities:	'	'
Short-term debt (including current maturities of long-term debt)	91	83
Trade payables	1,494	1,359
Accrued taxes	41	40
Accrued interest	10	10
Accrued liabilities	280	252
Other	93	94
Total current liabilities	2,009	1,838
Long-term debt	1,206	1,019
Deferred income taxes	29	28
Postretirement benefits	222	249
Deferred credits and other liabilities	204	204
Commitments and contingencies	'	'
Total liabilities	3,670	3,338
Redeemable noncontrolling interests	22	20
Tenneco Inc. Shareholders’ equity:	'	'
Common stock	1	1
Premium on common stock and other capital surplus	3,037	3,014
Accumulated other comprehensive loss	-354	-360
Retained earnings (accumulated deficit)	-1,794	-1,921
Shareholders Equity Before Deduction Of Treasury Stock, Total	890	734
Less — Shares held as treasury stock, at cost	301	301
Total Tenneco Inc. shareholders’ equity	589	433
Noncontrolling interests	36	39
Total equity	625	472
Total liabilities, redeemable noncontrolling interests and equity	$4,317	$3,830

CONDENSED_CONSOLIDATED_STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating Activities	'	'	'	'
Net Income	$91	$74	$145	$135
Adjustments to reconcile net income to cash provided (used) by operating activities —	'	'	'	'
Depreciation and amortization of other intangibles	52	50	103	100
Deferred income taxes	-3	21	-1	16
Stock-based compensation	3	2	8	7
Loss on sale of assets	1	2	2	2
Changes in components of working capital —	'	'	'	'
(Increase) decrease in receivables	-69	-77	-303	-253
(Increase) decrease in inventories	-23	22	-104	-18
(Increase) decrease in prepayments and other current assets	-14	-32	-52	-81
Increase (decrease) in payables	73	72	160	149
Increase (decrease) in accrued taxes	-5	-8	0	-13
Increase (decrease) in accrued interest	-4	-4	0	0
Increase (decrease) in other current liabilities	11	15	24	7
Changes in long-term assets	0	3	1	3
Changes in long-term liabilities	3	-10	-10	-20
Other	-2	3	1	7
Net cash provided (used) by operating activities	114	133	-26	41
Investing Activities	'	'	'	'
Proceeds from the sale of assets	0	0	0	2
Cash payments for plant, property, and equipment	-84	-54	-167	-124
Cash payments for software related intangible assets	-2	-6	-9	-12
Changes in restricted cash	1	4	0	-5
Net cash (used) by investing activities	-85	-56	-176	-139
Financing Activities	'	'	'	'
Issuance (repurchase) of common shares	1	12	-1	13
Tax benefit from stock-based compensation	5	0	17	0
Retirement of long-term debt	-7	-3	-10	-8
Issuance of long-term debt	45	0	45	0
Purchase of common stock under the share repurchase program	0	-2	0	-2
Increase (decrease) in bank overdrafts	-5	44	-1	35
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt and short-term borrowings secured by accounts receivable	-30	-84	167	107
Net decrease in short-term borrowings secured by accounts receivable	-30	0	-10	0
Capital contribution from noncontrolling interest partner	4	0	5	0
Distributions to noncontrolling interest partners	-23	-23	-23	-23
Net cash provided (used) by financing activities	-40	-56	189	122
Effect of foreign exchange rate changes on cash and cash equivalents	4	-19	-2	-12
Increase (decrease) in cash and cash equivalents	-7	2	-15	12
Cash and cash equivalents, April 1 and January 1, respectively	267	233	275	223
Cash and cash equivalents, June 30 (Note)	260	235	260	235
Supplemental Cash Flow Information	'	'	'	'
Cash paid during the period for interest	24	23	38	39
Cash paid during the period for income taxes (net of refunds)	53	46	74	71
Non-cash Investing and Financing Activities	'	'	'	'
Period end balance of trade payables for plant, property, and equipment	$39	$24	$39	$24

CONDENSED_CONSOLIDATED_STATEME4

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS EQUITY (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
In Millions, except Share data, unless otherwise specified
Beginning balance at Dec. 31, 2012	'	$1	$3,031	($408)	($2,104)	$274	'	$45
Beginning balance at Dec. 31, 2012	'	62,789,382	'	'	'	2,294,692	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Premium on common stock issued pursuant to benefit plans	'	'	18	'	'	'	'	'
Other comprehensive income (loss)	'	'	'	-40	'	'	'	-1
Net income attributable to Tenneco Inc.	117	'	'	'	117	'	'	'
Purchase of common stock through stock repurchase program	'	'	'	'	'	2	'	'
Dividends declared	'	'	'	'	'	'	'	-15
Net income	'	'	'	'	'	'	'	12
Purchase of common stock through stock repurchase program, Shares	'	'	'	'	'	45,000	'	'
Issued pursuant to benefit plans	'	156,357	'	'	'	'	'	'
Stock options exercised	'	491,064	'	'	'	'	'	'
Ending balance at Jun. 30, 2013	380	1	3,049	-448	-1,987	276	339	41
Ending balance at Jun. 30, 2013	'	63,436,803	'	'	'	2,339,692	'	'
Beginning balance at Dec. 31, 2013	472	1	3,014	-360	-1,921	301	'	39
Beginning balance at Dec. 31, 2013	'	63,714,728	'	'	'	2,844,692	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Premium on common stock issued pursuant to benefit plans	'	'	23	'	'	'	'	'
Other comprehensive income (loss)	'	'	'	6	'	'	'	0
Net income attributable to Tenneco Inc.	127	'	'	'	127	'	'	'
Purchase of common stock through stock repurchase program	'	'	'	'	'	0	'	'
Dividends declared	'	'	'	'	'	'	'	-12
Net income	'	'	'	'	'	'	'	9
Purchase of common stock through stock repurchase program, Shares	'	'	'	'	'	0	'	'
Issued pursuant to benefit plans	'	77,651	'	'	'	'	'	'
Stock options exercised	'	57,828	'	'	'	'	'	'
Ending balance at Jun. 30, 2014	$625	$1	$3,037	($354)	($1,794)	$301	$589	$36
Ending balance at Jun. 30, 2014	'	63,850,207	'	'	'	2,844,692	'	'

Consolidation_and_Presentation

Consolidation and Presentation	6 Months Ended
	Jun. 30, 2014
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 Annual Report on Form 10-K for the year ended December 31, 2013.
	In our opinion, the accompanying unaudited financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly 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.

Financial_Instruments

Financial Instruments

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

'

Financial Instruments

'

Financial Instruments

The carrying and estimated fair values of our financial instruments by class at June 30, 2014 and December 31, 2013 were as follows:

30-Jun-14

31-Dec-13

Carrying

Fair

Carrying

Fair

Amount

Value

Amount

Value

(Millions)

Long-term debt (including current maturities)

$

1,207

$

1,262

$

1,021

$

1,089

Instruments with off-balance sheet risk:

Foreign exchange forward contracts:

Asset derivative contracts

—

—

—

—

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 $780 million and $790 million at June 30, 2014 and December 31, 2013, respectively. We have classified $428 million and $287 million as level 2 in the fair value hierarchy at June 30, 2014 and December 31, 2013, respectively, since we utilize valuation inputs that are observable both directly and indirectly. We classified the remaining $54 million and $10 million, consisting of foreign subsidiary debt, as level 3 in the fair value hierarchy at June 30, 2014 and December 31, 2013, respectively.

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 condensed 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 condensed consolidated balance sheet. The fair value of our foreign exchange forward contracts, presented on a gross basis at June 30, 2014 and December 31, 2013, respectively, was as follows:

Fair Value of Derivative Instruments

30-Jun-14

31-Dec-13

Asset

Liability

Total

Asset

Liability

Total

Derivatives

Derivatives

Derivatives

Derivatives

(Millions)

Foreign exchange forward contracts

$—

$—

$—

$

—

$—

$—

The fair value of our recurring financial assets at June 30, 2014 and December 31, 2013, respectively, are as follows:

June 30, 2014

December 31, 2013

Level 1

Level 2

Level 3

Level 1

Level 2

Level 3

(Millions)

Financial Assets:

Foreign exchange forward contracts

n/a

$

—

n/a

n/a

$

—

n/a

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.

The following table summarizes by major currency the notional amounts for foreign currency forward purchase and sale contracts as of June 30, 2014 (all of which mature in 2014):

Notional Amount

in Foreign Currency

(Millions)

Australian dollars

—Purchase

2

—Sell

(1

)

British pounds

—Purchase

34

—Sell

(2

)

Canadian dollars

—Sell

(18

)

European euro

—Purchase

2

—Sell

(9

)

South African rand

—Purchase

127

—Sell

(3

)

Japanese yen

—Purchase

271

—Sell

(531

)

Polish zloty

—Purchase

25

U.S. dollars

—Purchase

29

—Sell

(74

)

Other

—Purchase

1

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 wholly-owned 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 of our direct or indirect subsidiaries secure our senior notes. For additional information, refer to Note 13 of our condensed consolidated financial statements, 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 event of a payment default by the sponsoring or participating employers of the Walker Plans. As a result of our decision to enter into these performance guarantee agreements, the levy due to the U.K. Pension Protection Fund was reduced. The Walker Plans are comprised of employees from Tenneco Walker (U.K.) Limited and our Futaba-Tenneco U.K. joint venture. Employer contributions are funded by both Tenneco Walker (U.K.) Limited, as the sponsoring employer and Futaba-Tenneco U.K., as a participating employer. 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. The maximum amount payable for these pension performance guarantees is approximately $27 million as of June 30, 2014 which is determined by taking 105 percent of the liability of the Walker Plans calculated under section 179 of the U.K. Pension Act of 2004 offset by plan assets. 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 $7 million and $10 million at June 30, 2014 and December 31, 2013, respectively. At June 30, 2014, 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. which requires Futaba to indemnify TMEL for any cost, loss or liability which TMEL may incur 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 is 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. At June 30, 2014, the maximum amount reimbursable by Futaba to TMEL is approximately $5 million.

We have issued letters of credit in connection with some obligations of our affiliates. As of June 30, 2014, we have issued $83 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 — One of our European subsidiaries receives payment from one of its customers whereby the accounts receivable are satisfied through the early delivery of financial instruments. We may collect these financial instruments before their maturity date by either selling them at a discount or using them to satisfy accounts receivable that have previously been sold to a European bank. Any of these financial instruments which are not sold are classified as other current assets. The amount of these financial instruments that was collected before their maturity date and sold at a discount totaled $5 million at both June 30, 2014 and December 31, 2013. No such financial instruments were held by our European subsidiary as of June 30, 2014 or December 31, 2013.

In certain instances, several of our Chinese subsidiaries receive payments 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 $29 million and $13 million at June 30, 2014 and December 31, 2013, respectively, and were classified as notes payable. Financial instruments received from customers and not redeemed totaled $17 million and $12 million at June 30, 2014 and December 31, 2013, 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 $17 million and $12 million in other current assets at June 30, 2014 and December 31, 2013, respectively. Some of our Chinese subsidiaries that issue their own financial instruments to pay vendors are required to maintain a cash balance if they exceed certain credit limits with the financial institution that guarantees those financial instruments. A restricted cash balance was required at those Chinese subsidiaries at June 30, 2014 for $1 million and was not required at December 31, 2013.

The financial instruments received by one of our European subsidiaries and 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 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 — Near the end of the second quarter of 2013 certain of our suppliers in the U.S. extended their payment terms to Tenneco. The liquidity benefit to Tenneco from the extended payment terms totaled $14 million at June 30, 2014. These suppliers also began participating in a supply chain financing program under which they securitize their accounts receivables from Tenneco with two financial institutions. The financial institutions participate in the supply chain financing program on an uncommitted basis and can cease purchasing receivables from Tenneco's suppliers at any time. If the financial institutions did not continue to purchase receivables from Tenneco's suppliers under this program, the participating vendors could reduce their payment terms to Tenneco which in turn would cause our borrowings under our revolving credit facility to increase.

Restricted Cash - Two of our Australian subsidiaries arranged for $4 million in guarantees to be issued by a financial institution to support some of our subsidiaries' property lease arrangements and workers compensation programs. These guarantees were supported by a cash deposit with the financial institution which has been classified as restricted cash on the Tenneco Inc. consolidated balance sheet at June 30, 2014.

Some of our Chinese subsidiaries are required to maintain a cash balance if they exceed certain credit limits with the financial institution that guarantees the financial instruments issued by Tenneco to pay vendors. At the end of the second quarter of 2014, one of our Chinese subsidiaries exceeded their credit limits and was required to maintain a cash balance. The cash balance required was $1 million which has been classified as restricted cash on the Tenneco Inc. consolidated balance sheet at June 30, 2014.

LongTerm_Debt_and_Financing_Ar

Long-Term Debt and Financing Arrangements	6 Months Ended
	Jun. 30, 2014
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 March 22, 2012, we completed an amendment and restatement of our senior credit facility by increasing the amount and extending the maturity date of our revolving credit facility and adding a new $250 million Tranche A Term Facility. As of June 30, 2014, the senior credit facility provides us with a total revolving credit facility size of $850 million and had a $219 million balance outstanding under the Tranche A Term Facility, both of which will mature on March 22, 2017. Funds may be borrowed, repaid and re-borrowed under the revolving credit facility without premium or penalty. 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 enter into revolving loans under the facility. We are required to make quarterly principal payments under the Tranche A Term Facility of $6.3 million through March 31, 2015, $9.4 million beginning June 30, 2015 through March 31, 2016, $12.5 million beginning June 30, 2016 through December 31, 2016 and a final payment of $125 million is due on March 22, 2017. We have excluded the required payments, within the next twelve months, under the Tranche A Term Facility totaling $28 million from current liabilities as of June 30, 2014, because we have the intent and ability to refinance the obligations on a long-term basis by using our revolving credit facility.
	The financial ratios required under the amended and restated senior credit facility, and the actual ratios we achieved for the two quarters of 2014, are as follows:
		Quarter Ended
		June 30, 2014		March 31, 2014
		Required	Actual	Required	Actual
	Leverage Ratio (maximum)	3.5	1.57	3.5	1.63
	Interest Coverage Ratio (minimum)	2.75	10.62	2.75	10.39
	The senior credit facility includes a maximum leverage ratio covenant of 3.50 and a minimum interest coverage ratio of 2.75 through March 22, 2017.
	At June 30, 2014, of the $850 million available under the revolving credit facility, we had unused borrowing capacity of $560 million with $208 million in outstanding borrowings and $82 million in outstanding letters of credit. As of June 30, 2014, our outstanding debt also included $219 million related to our Tranche A Term Facility which is subject to quarterly principal payments as described above through March 22, 2017, $225 million of 7.75 percent senior notes due August 15, 2018, $500 million of 6.875 percent senior notes due December 15, 2020, and $145 million of other debt.

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2014
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 with a projected loss for the year or an actual year-to-date loss 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 $46 million and $47 million in the three month periods ended June 30, 2014 and 2013, respectively. The tax expense recorded in the second quarter of 2014 included $1 million for tax adjustment to prior year estimates.
	We reported income tax expense of $86 million and $59 million in the six month periods ended June 30, 2014 and 2013, respectively. The tax expense recorded in the first six months of 2014 included $1 million for tax adjustments to prior year estimates. The tax expense recorded in the first six months of 2013 included a net tax benefit of $13 million for tax adjustments primarily related to recognizing a U.S. tax benefit for foreign taxes and changes to prior year estimates. U.S. tax benefit for foreign taxes is driven by our ability to claim a U.S. foreign tax credit beginning in 2013. The U.S. foreign tax credit law provides for a credit against U.S. taxes otherwise payable for foreign taxes paid with regard to dividends, interest and royalties paid to us in the U.S.
	In 2012, we reversed the tax valuation allowance against our net deferred tax assets in the U.S. based on operating improvements we had made, the outlook for light and commercial vehicle production in the U.S. and the positive impact this should have on our U.S. operations. We have fully utilized our federal net operating loss ("NOL") as of June 30, 2014. The state NOLs expire in various tax years through 2032.

Accounts_Receivable_Securitiza

Accounts Receivable Securitization	6 Months Ended
	Jun. 30, 2014
Disclosure Accounts Receivables Additional Information [Abstract]	'
Accounts Receivable Securitization	'
	Accounts Receivable Securitization
	We securitize some of our accounts receivable on a limited recourse basis in North America 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 North America, 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 March 2014, the North American program was amended and extended to March 20, 2015. The first priority facility continues to provide financing of up to $110 million and the second priority facility, which is subordinated to the first priority facility, continues to provide up to an additional $40 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 North American program was zero at June 30, 2014 and $10 million at December 31, 2013.
	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 under various separate facilities. 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 15 days, or less, notification. The amount of outstanding third-party investments in our securitized accounts receivable in Europe was $186 million and $134 million at June 30, 2014 and December 31, 2013, respectively.
	If we were not able to securitize receivables under either the North American 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 North American accounts receivable securitization programs, 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 North American 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 Accounting Standards Codification (ASC) Topic 860, “Transfers and Servicing,” to report the transfer of financial assets in their entirety as a sale. The proceeds received in exchange for the transfer of accounts receivable under our European securitization programs approximates the fair value of such receivables. We recognized less than $1 million interest expense in each of the three month periods ended June 30, 2014 and 2013, and $1 million for each of the six month periods ended June 30, 2014 and 2013, relating to our North American securitization program. In addition, we recognized a loss of $1 million in each of the three month periods ended June 30, 2014 and 2013, and $2 million for each of the six month periods ended June 30, 2014, and 2013, 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 two percent during the first half of 2014 and three percent during the first half of 2013, respectively.

Restructuring_and_Other_Charge

Restructuring and Other Charges	6 Months Ended
	Jun. 30, 2014
Restructuring Reserve [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. In 2013, we incurred $78 million in restructuring and related costs, primarily related to European cost reduction efforts including non-cash asset write downs of $3 million, our exit from the distribution of aftermarket exhaust products and ending production of leaf springs in Australia, headcount reductions in various regions and the net impact of freezing our defined benefits plans in the United Kingdom, of which $70 million was recorded in cost of sales and $6 million was recorded in SG&A, $1 million in engineering expense and $1 million in other expense. In the second quarter of 2014, we incurred $10 million in restructuring and related costs, primarily related to European cost reduction efforts and headcount reductions in Australia and South America, of which $5 million was recorded in cost of sales, $3 million in SG&A, $1 million in engineering expense and $1 million in other expense. During the second quarter of 2013, we incurred $7 million in restructuring and related costs, primarily related to European cost reduction efforts, the ending of production of leaf springs in Australia, headcount reductions in various regions, and the net impact of freezing our defined benefit plans in the United Kingdom, of which $4 million was recorded in cost of sales and $3 million in SG&A. For the first six months of 2014, we incurred $20 million in restructuring and related costs, primarily related to European cost reduction efforts including non-cash asset write downs of $1 million and headcount reductions in Australia and South America, of which $15 million was recorded in cost of sales, $3 million in SG&A , $1 million was recorded in engineering expense and $1 million was recorded in other expense. For the first six months of 2013, we incurred $11 million in restructuring and related costs, primarily related to European cost reduction efforts, the costs to exit the distribution of aftermarket exhaust products and the ending of production of leaf springs in Australia, headcount reductions in various regions, and the net impact of freezing our defined benefit plans in the United Kingdom, of which $7 million was recorded in cost of sales and $4 million in SG&A.
	Amounts related to activities that are part of our restructuring reserves are as follows:
		December 31,		2014	2014		30-Jun-14
		2013		Expenses	Cash		Restructuring
		Restructuring			Payments		Reserve
		Reserve
		(Millions)
	Employee Severance, Termination Benefits and Other Related Costs		$44	19	(19	)		$44
	Under the terms of our amended and restated senior credit agreement that took effect on March 22, 2012, we are allowed to exclude $80 million of cash charges and expenses, before taxes, related to cost reduction initiatives incurred after March 22, 2012 from the calculation of the financial covenant ratios required under our senior credit facility. As of December 31, 2013, we had excluded all allowable charges relating to restructuring initiatives against the $80 million available under the terms of the senior credit facility.
	On January 31, 2013, we announced our intent to reduce structural costs in Europe. This initiative includes the closing of the Vittaryd facility in Sweden that we announced in September 2012 and a $7 million charge recorded in the fourth quarter of 2012 related to the impairment of certain assets in the European ride performance business. As part of our European structural cost reduction initiative, on September 5, 2013 we announced our intent to close our ride performance plant in Gijon, Spain and reduce the workforce at our ride performance plant in Sint-Truiden, Belgium. The actions were subject to consultation with the relevant employee representatives. We incurred $78 million in restructuring and related costs in 2013, of which $69 million million was related to this initiative including $3 million non-cash asset write downs. In the second quarter of 2014, we incurred $10 million in restructuring and related costs, of which $4 million was related to this initiative. In the first half of 2014, we incurred $20 million million in restructuring and related costs, of which $14 million was related to this initiative including $1 million for non-cash asset write downs. We concluded the consultation period with employee representatives at Gijon without having reached agreement and on December 17, 2013 notified the Gijon employees' works council that the Company was proceeding with the plant closure. Employee terminations at Gijon were completed by the end of 2013. During the first quarter of 2014, the employees' works council filed suit challenging the decision to close the Gijon plant and local High Court of Justice of Asturias ruled in favor of the employees' works council. On February 25, 2014, we announced the intention of the Company to appeal that decision to the Supreme Court of Spain in Madrid, and at the same time we worked closely with local and European government officials to reach a solution to address the challenge to our restructuring plan by the Gijon plant's employees' works council. In July 2014, we finalized the agreements related to restructuring with employee representatives at Gijon as well as Sint-Truiden. Under the final agreement for Gijon, the plant re-opened in July 2014 with about half of its prior workforce and will continue to be operated by Tenneco until a complete transfer of ownership takes place in approximately two years. We recorded $60 million in 2013, $3 million in the second quarter of 2014 and $5 million in the first half of 2014 related to these actions at Gijon and Sint-Truiden. In the first quarter of 2014, we announced and finalized the closure of the clean air just-in-time plant in Iwuy, France, due to reduced demand for the plant's products. The actions were subject to the required consultation process with the relevant employee representatives.

Environmental_Matters_Litigati

Environmental Matters, Litigation and Product Warranties	6 Months Ended
	Jun. 30, 2014
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 June 30, 2014, we have the obligation to remediate or contribute towards the remediation of certain sites, including one Federal Superfund site. At June 30, 2014, our aggregated estimated share of environmental remediation costs for all these sites on a discounted basis was approximately $15 million, of which $3 million is recorded in other current liabilities and $12 million is recorded in deferred credits and other liabilities in our condensed consolidated balance sheet. For those locations where the liability was discounted, the weighted average discount rate used was 2.30 percent. The undiscounted value of the estimated remediation costs was $18 million. Our expected payments of environmental remediation costs are estimated to be approximately $2 million in 2014, $1 million each year beginning 2015 through 2018 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
	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. We have cooperated and continue to cooperate fully with these antitrust investigations, and take other actions to minimize our potential exposure. Antitrust law investigations and related matters often continue for several years and can result in significant penalties and liability. At this point, we cannot estimate the ultimate impact on our company from investigations into our antitrust compliance and related matters in light of the uncertainties and many variables involved, and there can be no assurance that the ultimate resolution of these matters will not have a material adverse effect on our consolidated financial position, results of operations or liquidity.
	Other Legal Proceedings, Claims and Investigations
	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, 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, one of our Argentine subsidiaries is currently defending against a criminal complaint alleging the failure to comply with laws requiring the proceeds of export transactions to be collected, reported and/or converted to local currency within specified time periods. As another example, in the U.S. we are subject to an audit in 11 states with respect to the payment of unclaimed property to those states, spanning a period as far back as over 30 years. 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," 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.
	In addition, we are subject to lawsuits initiated by a significant number of claimants alleging health problems as a result of exposure to asbestos. In the early 2000's we were named in nearly 20,000 complaints, most of which were filed in Mississippi state court and the vast majority of which made no allegations of exposure to asbestos from our product categories. Most of these claims have been dismissed and our current docket of active and inactive cases is less than 500 cases nationwide. A small number of claims have been asserted by railroad workers alleging exposure to asbestos products in railroad cars manufactured by The Pullman Company, one of our subsidiaries. The substantial majority of the remaining claims are related to alleged exposure to asbestos in our automotive products. Only a small percentage of the claimants allege that they were automobile mechanics and a significant number appear to involve workers in other industries or otherwise do not include sufficient information to determine whether there is any basis for a claim against us. We believe, based on scientific and other evidence, it is unlikely that mechanics 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, 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.
	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 on OE 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:
		Six Months Ended June 30,
		2014			2013
		(Millions)
	Beginning Balance January 1,	$	24		$	23
	Accruals related to product warranties	12			6
	Reductions for payments made	(10		)	(9		)
	Ending Balance June 30,	$	26		$	20

Earnings_Per_Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	Earnings per share of common stock outstanding were computed as follows:
		Three Months Ended June 30, 2014		Three Months Ended June 30, 2013		Six Months Ended June 30, 2014		Six Months Ended June 30, 2013
		(Millions Except Share and Per Share Amounts)
	Basic earnings per share —
	Net income attributable to Tenneco Inc.	$	81	$	63	$	127	$	117
	Weighted Average shares of common stock outstanding	60,736,737		60,542,361		60,631,080		60,424,540
	Earnings per share of common stock	$	1.34	$	1.04	$	2.1	$	1.94
	Diluted earnings per share —
	Net income attributable to Tenneco Inc.	$	81	$	63	$	127	$	117
	Weighted Average shares of common stock outstanding	60,736,737		60,542,361		60,631,080		60,424,540
	Effect of dilutive securities:
	Restricted stock	104,679		170,950		139,024		157,551
	Stock options	820,480		1,010,813		813,621		950,459
	Weighted Average shares of common stock outstanding including dilutive securities	61,661,896		61,724,124		61,583,725		61,532,550
	Earnings per share of common stock	$	1.32	$	1.02	$	2.06	$	1.91
	Options to purchase 523 and 830,486 shares of common stock were outstanding as of June 30, 2014 and 2013, respectively, but not included in the computation of diluted earnings per share respectively, because the options were anti-dilutive.

Common_Stock

Common Stock	6 Months Ended
	Jun. 30, 2014
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 $1 million in compensation expense in each of the three month periods ended June 30, 2014 and 2013 and $3 million in compensation expense for each of the six month periods ended June 30, 2014 and 2013, related to nonqualified stock options as part of our selling, general and administrative expense. This resulted in a decrease of $0.01 and $0.02 in both basic and diluted earnings per share for the three month period ended June 30, 2014 and 2013 and a decrease of $0.04 and $0.05 in both basic and diluted earnings per share for the six month period ended June 30, 2014 and 2013.
	For employees eligible to retire at the grant date, we immediately expense stock options and restricted stock. If employees become eligible to retire during the vesting period, we immediately recognize any remaining expense associated with their stock options and restricted stock.
	As of June 30, 2014, there was approximately $8 million of unrecognized compensation costs related to our stock option awards that we expect to recognize over a weighted average period of 1.4 years.
	Compensation expense for restricted stock, restricted stock units, long-term performance units and SARs was $5 million for both the three month periods ended June 30, 2014 and 2013 and $10 million and $8 million for the six month periods ended June 30, 2014 and 2013, 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 six months ended June 30, 2014 and 2013 was $1 million and $10 million, respectively.
	Stock options exercised in the first six months of 2014 generated a tax benefit of $3 million. We started to record this tax benefit in the third quarter of 2013 when we began utilizing our federal and state NOLs. In the first six months of 2014, we recorded a tax benefit of $17 million, of which $14 million was related to the historic tax benefit on stock options from 2011 through 2013.
	Assumptions — We calculated the fair values of stock option awards using the Black-Scholes option pricing model with the weighted average assumptions listed below. The fair value of share-based awards is determined at the time the awards are granted which is generally in January of each year, and requires judgment in estimating employee and market behavior.
		Six Months Ended June 30,
		2014				2013
	Stock Options Granted
	Weighted average grant date fair value, per share	$	26.46			$	19.84
	Weighted average assumptions used:
	Expected volatility	52.8		%		66.4		%
	Expected lives	5				4.9
	Risk-free interest rates	1.7		%		0.7		%
	Dividend yields	—		%		—		%
	Expected volatility is calculated based on current implied volatility and historical realized volatility for the Company.
	Expected lives of options are based upon the historical and expected time to post-vesting forfeiture and exercise. We believe this method is the best estimate of the future exercise patterns currently available.
	The risk-free interest rates are based upon the Constant Maturity Rates provided by the U.S. Treasury. For our valuations, we used the continuous rate with a term equal to the expected life of the options.
	Stock Options — The following table reflects the status and activity for all options to purchase common stock for the period indicated:
		Six Months Ended June 30, 2014
		Shares			Weighted Avg.				Weighted Avg.	Aggregate
		Under			Exercise				Remaining	Intrinsic
		Option			Prices				Life in Years	Value
										(Millions)
	Outstanding Stock Options
	Outstanding, January 1, 2014	1,983,573			$	22.93			4.5	$	62
	Granted	192,624			56.23
	Canceled	(31,299	)		19.78
	Forfeited	(300	)		22.77
	Exercised	(25,595	)		14.72					1
	Outstanding, March 31, 2014	2,119,003			$	26.1			4.6	$	67
	Granted	—			—
	Forfeited	—			—
	Exercised	(32,233	)		25.49					1
	Outstanding, June 30, 2014	2,086,770			$	26.11			4.3	$	75
	The weighted average grant-date fair value of options granted during the six months ended June 30, 2014 and 2013 was $26.46 and $19.84, respectively. The total fair value of shares vested was $6 million and $5 million for the periods ended June 30, 2014 and 2013, respectively.
	Restricted Stock — The following table reflects the status for all nonvested restricted shares for the period indicated:
		Six Months Ended June 30, 2014
		Shares			Weighted Avg.
					Grant Date
					Fair Value
	Nonvested Restricted Shares
	Nonvested balance at January 1, 2014	368,268			$	34.9
	Granted	131,561			54.9
	Vested	(186,112	)		36.57
	Forfeited	—			—
	Nonvested balance at March 31, 2014	313,717			$	42.3
	Granted	2,838			66.96
	Vested	(2,286	)		31.63
	Forfeited	(575	)		38.52
	Nonvested balance at June 30, 2014	313,694			$	42.6
	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 June 30, 2014, approximately $8 million of total unrecognized compensation costs related to restricted stock awards is expected to be recognized over a weighted-average period of approximately 2.1 years. The total fair value of restricted shares vested was $7 million and $5 million at June 30, 2014 and 2013, respectively.
	In January 2014, our Board of Directors approved a share repurchase program, authorizing our company to repurchase up to 400,000 shares of our outstanding common stock over a 12 month period. This repurchase program does not obligate Tenneco to make repurchases at any specific time or situation and is intended to offset dilution from shares of restricted stock and stock options issued in 2014 to employees. We did not purchase any shares through this program in the six month period ended June 30, 2014.
	Repurchased shares held as part of our treasury stock were at 2,844,692 shares at both June 30, 2014 and December 31, 2013.
	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 June 30, 2014, $25 million of total unrecognized compensation costs is expected to be recognized over a weighted-average period of approximately 2.0 years.

Pension_Plans_Postretirement_a

Pension Plans, Postretirement and Other Employee Benefits	6 Months Ended
	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Pension Plans, Postretirement and Other Employee Benefits	'
	Pension Plans, Postretirement and Other Employee Benefits
	Net periodic pension costs and postretirement benefit costs consist of the following components:
		Three Months Ended June 30,
		Pension												Postretirement
		2014						2013						2014			2013
		US			Foreign			US			Foreign			US			US
		(Millions)
	Service cost — benefits earned during the period	$	—		$	2		$	1		$	3		$	—		$	—
	Interest cost	5			4			4			4			2			2
	Expected return on plan assets	(6		)	(5		)	(6		)	(5		)	—			—
	Net amortization:
	Actuarial loss	2			2			3			3			1			1
	Prior service cost (credit)	—			—			—			1			(2		)	(2		)
	Net pension and postretirement costs	$	1		$	3		$	2		$	6		$	1		$	1
		Six Months Ended June 30,
		Pension												Postretirement
		2014						2013						2014			2013
		US			Foreign			US			Foreign			US			US
		(Millions)
	Service cost — benefits earned during the period	$	—		$	4		$	1		$	5		$	—		$	—
	Interest cost	10			9			9			8			3			3
	Expected return on plan assets	(12		)	(12		)	(11		)	(10		)	—			—
	Net amortization:
	Actuarial loss	4			4			5			6			1			2
	Prior service cost (credit)	—			1			—			1			(3		)	(3		)
	Net pension and postretirement costs	$	2		$	6		$	4		$	10		$	1		$	2
	For the six months ended June 30, 2014, we made pension contributions of $14 million and $9 million for our domestic and foreign pension plans, respectively. Based on current actuarial estimates, we believe we will be required to contribute approximately $24 million for the remainder of 2014. Pension contributions beyond 2014 will be required, but those amounts will vary based upon many factors including, for example, the performance of our pension fund investments during 2014.
	We made postretirement contributions of approximately $3 million during the first six months of 2014. Based on current actuarial estimates, we believe we will be required to contribute approximately $5 million for the remainder of 2014.
	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 six month periods ended June 30, 2014 and 2013 include the following components:
		Three Months Ended June 30,
		2014									2013
		Before-Tax			Tax			Net-of-Tax			Before-			Tax			Net-of-Tax
		Amount			Benefit			Amount			Tax			Benefit			Amount
											Amount
		(Millions)
	Defined benefit pension and postretirement plans:
	Amortization of prior service cost included in net periodic pension and postretirement cost	$	(2	)	$	—		$	(2	)	$	(1	)	$	—		$	(1	)
	Amortization of actuarial loss included in net periodic pension and postretirement cost	5			—			5			7			—			7
	Other comprehensive income – pension benefits	$	3		$	—		$	3		$	6		$	—		$	6
		Six Months Ended June 30,
		2014									2013
		Before-Tax			Tax			Net-of-Tax			Before-			Tax			Net-of-Tax
		Amount			Benefit			Amount			Tax			Benefit			Amount
											Amount
		(Millions)
	Defined benefit pension and postretirement plans:
	Amortization of prior service cost included in net periodic pension and postretirement cost	$	(2	)	$	—		$	(2	)	$	(2	)	$	—		$	(2	)
	Amortization of actuarial loss included in net periodic pension and postretirement cost	9			1			8			13			(1		)	12
	Other comprehensive income – pension benefits	$	7		$	1		$	6		$	11		$	(1	)	$	10

New_Accounting_Pronouncements

New Accounting Pronouncements	6 Months Ended
	Jun. 30, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
New Accounting Pronouncements	'
	New Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (“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 amendment is effective for reporting periods beginning after December 15, 2016 for public entities. We will adopt this amendment on January1, 2017. We are currently evaluating the potential impact of this new guidance on our consolidated financial statements.
	In July 2013, the FASB issued an amendment to provide explicit guidance on financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, similar tax loss, or tax credit carryforward exists. The objective of the amendment is to eliminate the diversity in practice in the presentation of unrecognized tax benefits in those instances. This amendment is effective for reporting periods beginning after December 15, 2013. We adopted this amendment on January 1, 2014. This amendment did not have a material impact on our consolidated financial statements.
	In April 2013, the FASB issued an amendment to clarify when an entity should apply the liquidation basis of accounting and to provide principles for the measurement of assets and liabilities under the liquidation basis of accounting, as well as any required disclosures. The amendment applies to all entities that issue financial statements that are presented in conformity with U.S. GAAP except investment companies that are regulated under the Investment Company Act of 1940. This amendment is effective for reporting periods beginning after December 15, 2013. This amendment did not have any impact on our consolidated financial statements.
	In February 2013, the FASB issued an amendment to resolve the diversity in practice about whether Subtopic 810-10, Consolidation-Overall, or Subtopic 830-30, Foreign Currency Matters-Translation of Financial Statements, applies to the release of the cumulative translation adjustment into net income when a parent either sells a part of all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business (other than a sale of in substance real state or conveyance of oil and gas mineral rights) within a foreign entity. In addition, the amendments resolve the diversity in practice for the treatment of business combinations achieved in stages (sometimes also referred to as step acquisitions) involving a foreign entity. This amendment is effective for reporting periods beginning after December 15, 2013. This amendment did not have any impact on our consolidated financial statements.
	In February 2013, the FASB issued an amendment to the accounting guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, except for obligations addressed within existing guidance in U.S. GAAP. The guidance requires an entity to measure those obligations as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement amount its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. The guidance in this amendment also requires an entity to disclose the nature and amount of the obligation as well as other information about those obligations. This amendment is effective for reporting periods beginning after December 15, 2013. This amendment did not have any impact on our consolidated financial statements.

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	We are managed and organized along our two major product lines (clean air and ride performance) and three geographic areas (North America; Europe, South America and India; and Asia Pacific), resulting in six operating segments (North America Clean Air, North America Ride Performance, Europe, South America and India Clean Air, Europe, South America and India 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.
	The following table summarizes certain Tenneco Inc. segment information:
		Clean Air Division						Ride Performance Division
		North		Europe, South America & India		Asia		North		Europe, South America & India		Asia		Other			Reclass & Elims			Total
		America				Pacific		America				Pacific
		(Millions)
	At June 30, 2014 and for the Three Months Ended June 30, 2014
	Revenues from external customers	$	755	$	523	$	263	$	364	$	280	$	56	$	—		$	—		$	2,241
	Intersegment revenues	7		28		—		3		11		11		—			(60		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	74		18		23		48		14		8		(29		)	—			156
	Total assets	1,238		946		589		718		558		233		—			35			4,317
	At June 30, 2013 and for the Three Months Ended June 30, 2013
	Revenues from external customers	687		516		203		324		281		56		—			—			2,067
	Intersegment revenues	1		26		—		3		9		8		—			(47		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	68		18		21		36		14		6		(22		)	—			141
	Total assets	1,099		869		451		682		593		208		—			37			3,939
	At June 30, 2014 and for the Six Months Ended June 30, 2014
	Revenues from external customers	$	1,453	$	1,029	$	503	$	699	$	543	$	108	$	—		$	—		$	4,335
	Intersegment revenues	14		58		—		6		21		19		—			(118		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	130		27		43		78		30		15		(54		)	—			269
	Total assets	1,238		946		589		718		558		233		—			35			4,317
	At June 30, 2013 and for the Six Months Ended June 30, 2013
	Revenues from external customers	1,333		983		386		631		533		104		—			—			3,970
	Intersegment revenues	2		57		—		5		21		15		—			(100		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	117		29		36		61		24		10		(43		)	—			234
	Total assets	1,099		869		451		682		593		208		—			37			3,939

Supplemental_Guarantor_Condens

Supplemental Guarantor Condensed Consolidating Financial Statements	6 Months Ended
	Jun. 30, 2014
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 2018 and 2020 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.
	We revised the supplemental guarantor statements of comprehensive income and cash flows as a result of a correction to comprehensive income and to the classification of intercompany dividends in the cash flow. These revisions had no impact on any of the company’s current or previously issued consolidated financial statements. The misclassification in the supplemental cash flow statements consisted of including $40 million of intercompany dividend payments by the nonguarantor subsidiaries in operating activities which should have instead been included in financing activities for both the three and six month periods ended on June 30, 2013. Other comprehensive loss of $18 million was excluded in the net comprehensive income of the parent company for the three month period ended on June 30, 2013 and $40 million of other comprehensive loss was excluded for the six month period ended June 30, 2013. The impact of these corrections to the applicable prior periods are reflected in the guarantor financial information herein and will be reflected in future filings.
	Distributions
	There are no significant restrictions on the ability of the Guarantor Subsidiaries to make distributions to us.
	STATEMENT OF COMPREHENSIVE INCOME (LOSS)
		For the Three Months Ended June 30, 2014
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
		Subsidiaries			Subsidiaries			(Parent			Elims
								Company)
		(Millions)
	Revenues
	Net sales and operating revenues —
	External	$	1,007		$	1,234		$	—		$	—		$	2,241
	Affiliated companies	103			157			—			(260		)	—
		1,110			1,391			—			(260		)	2,241
	Costs and expenses
	Cost of sales (exclusive of depreciation and amortization shown below)	975			1,136			—			(260		)	1,851
	Engineering, research, and development	18			24			—			—			42
	Selling, general, and administrative	55			82			2			—			139
	Depreciation and amortization of other intangibles	21			31			—			—			52
		1,069			1,273			2			(260		)	2,084
	Other income (expense)
	Loss on sale of receivables	—			(1		)	—			—			(1		)
	Other income (loss)	27			(1		)	—			(26		)	—
		27			(2		)	—			(26		)	(1		)
	Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	68			116			(2		)	(26		)	156
	Interest expense —
	External (net of interest capitalized)	(1		)	1			19			—			19
	Affiliated companies (net of interest income)	21			(21		)	—			—			—
	Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	48			136			(21		)	(26		)	137
	Income tax expense	6			40									46
	Equity in net income (loss) from affiliated companies	83			—			102			(185		)	—
	Net Income (loss)	125			96			81			(211		)	91
	Less: Net income attributable to noncontrolling interests	—			10			—			—			10
	Net income (loss) attributable to Tenneco Inc.	$	125		$	86		$	81		$	(211	)	$	81
	Comprehensive income (loss) attributable to Tenneco Inc.	$	123		$	97		$	90		$	(220	)	$	90
	STATEMENT OF COMPREHENSIVE INCOME (LOSS)
		For the Three Months Ended June 30, 2013
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
		Subsidiaries			Subsidiaries			(Parent			Elims
								Company)
		(Millions)
	Revenues
	Net sales and operating revenues —
	External	$	904		$	1,163		$	—		$	—		$	2,067
	Affiliated companies	92			141			—			(233		)	—
		996			1,304			—			(233		)	2,067
	Costs and expenses
	Cost of sales (exclusive of depreciation and amortization shown below)	776			1,192			—			(232		)	1,736
	Engineering, research, and development	14			19			—			—			33
	Selling, general, and administrative	45			60			1			—			106
	Depreciation and amortization of other intangibles	19			31			—			—			50
		854			1,302			1			(232		)	1,925
	Other income (expense)
	Loss on sale of receivables	—			(1		)	—			—			(1		)
	Other income (expense)	34			5			—			(39		)	—
		34			4			—			(39		)	(1		)
	Earnings before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	176			6			(1		)	(40		)	141
	Interest expense —
	External (net of interest capitalized)	(1		)	1			20			—			20
Affiliated companies (net of interest income)	18			(18		)	—			—			—
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	159			23			(21		)	(40		)	121
Income tax expense	40			7			—			—			47
Equity in net income (loss) from affiliated companies	2			—			84			(86		)	—
Net income (loss)	121			16			63			(126		)	74
Less: Net income attributable to noncontrolling interests	—			11			—			—			11
Net income (loss) attributable to Tenneco Inc.	$	121		$	5		$	63		$	(126	)	$	63
Comprehensive income (loss) attributable to Tenneco Inc.	$	126		$	(18	)	$	45		$	(108	)	$	45
STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	For the Six Months Ended June 30, 2014
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
	Subsidiaries			Subsidiaries			(Parent			Elims
							Company)
	(Millions)
Revenues
Net sales and operating revenues —
External	$	1,927		$	2,408		$	—		$	—		$	4,335
Affiliated companies	206			305			—			(511		)	—
	2,133			2,713			—			(511		)	4,335
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,777			2,339			—			(511		)	3,605
Engineering, research, and development	40			44			—			—			84
Selling, general, and administrative	106			161			4			—			271
Depreciation and amortization of other intangibles	42			61			—			—			103
	1,965			2,605			4			(511		)	4,063
Other income (expense)
Loss on sale of receivables	—			(2		)	—			—			(2		)
Other income (expense)	25			—			—			(26		)	(1		)
	25			(2		)	—			(26		)	(3		)
Earnings before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	193			106			(4		)	(26		)	269
Interest expense —
External (net of interest capitalized)	(1		)	1			38						38
Affiliated companies (net of interest income)	37			(37		)	—			—			—
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	157			142			(42		)	(26		)	231
Income tax expense	36			50			—			—			86
Equity in net income (loss) from affiliated companies	68			—			169			(237		)	—
Net income (loss)	189			92			127			(263		)	145
Less: Net income attributable to noncontrolling interests	—			18			—			—			18
Net income (loss) attributable to Tenneco Inc.	$	189		$	74		$	127		$	(263	)	$	127
Comprehensive income (loss) attributable to Tenneco Inc.	$	188		$	81		$	133		$	(269	)	$	133
STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	For the Six Months Ended June 30, 2013
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
	Subsidiaries			Subsidiaries			(Parent			Elims
							Company)
	(Millions)
Revenues
Net sales and operating revenues —
External	$	1,756		$	2,214		$	—		$	—		$	3,970
Affiliated companies	171			291			—			(462		)	—
	1,927			2,505			—			(462		)	3,970
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,518			2,283			—			(461		)	3,340
Engineering, research, and development	29			39			—			—			68
Selling, general, and administrative	98			124			3			—			225
Depreciation and amortization of other intangibles	38			62			—			—			100
	1,683			2,508			3			(461		)	3,733
Other income (expense)
Loss on sale of receivables	—			(2		)	—			—			(2		)
Other income (expense)	33			5			—			(39		)	(1		)
	33			3			—			(39		)	(3		)
Earnings before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	277			—			(3		)	(40		)	234
Interest expense —
External (net of interest capitalized)	(1		)	2			39			—			40
Affiliated companies (net of interest income)	36			(37		)	1			—			—
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	242			35			(43		)	(40		)	194
Income (benefit) tax expense	46			13						—			59
Equity in net income (loss) from affiliated companies	(3		)	—			160			(157		)	—
Net income (loss)	193			22			117			(197		)	135
Less: Net income attributable to noncontrolling interests	—			18			—			—			18
Net income (loss) attributable to Tenneco Inc.	$	193		$	4		$	117		$	(197	)	$	117
Comprehensive income (loss) attributable to Tenneco Inc.	$	193		$	(36	)	$	77		$	(157	)	$	77
BALANCE SHEET
	30-Jun-14
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
	Subsidiaries			Subsidiaries			(Parent			Elims
							Company)
	(Millions)
ASSETS
Current assets:
Cash and cash equivalents	$	—		$	260		$	—		$	—		$	260
Restricted cash	—			5			—			—			5
Receivables, net	569			1,505			—			(716		)	1,358
Inventories	321			440			—			—			761
Deferred income taxes	88			—			7			(23		)	72
Prepayments and other	48			225			—			—			273
Total current assets	1,026			2,435			7			(739		)	2,729
Other assets:
Investment in affiliated companies	998			—			907			(1,905		)	—
Notes and advances receivable from affiliates	983			9,010			4,951			(14,944		)	—
Long-term receivables, net	12			2			—			—			14
Goodwill	21			47			—			—			68
Intangibles, net	12			16			—			—			28
Deferred income taxes	60			9			52			—			121
Other	44			61			21			—			126
	2,130			9,145			5,931			(16,849		)	357
Plant, property, and equipment, at cost	1,202			2,415			—			—			3,617
Less — Accumulated depreciation and amortization	(826		)	(1,560		)	—			—			(2,386		)
	376			855			—			—			1,231
Total assets	$	3,532		$	12,435		$	5,938		$	(17,588	)	$	4,317
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	$	—		$	76		$	15		$	—		$	91
Short-term debt — affiliated	205			295			10			(510		)	—
Trade payables	541			1,109			—			(156		)	1,494
Accrued taxes	(12		)	25			28			—			41
Other	144			303			9			(73		)	383
Total current liabilities	878			1,808			62			(739		)	2,009
Long-term debt — non-affiliated	—			53			1,153			—			1,206
Long-term debt — affiliated	1,831			8,978			4,135			(14,944		)	—
Deferred income taxes	—			29			—			—			29
Postretirement benefits and other liabilities	342			81			(1		)	4			426
Commitments and contingencies
Total liabilities	3,051			10,949			5,349			(15,679		)	3,670
Redeemable noncontrolling interests	—			22			—			—			22
Tenneco Inc. shareholders’ equity	481			1,428			589			(1,909		)	589
Noncontrolling interests	—			36			—			—			36
Total equity	481			1,464			589			(1,909		)	625
Total liabilities, redeemable noncontrolling interests and equity	$	3,532		$	12,435		$	5,938		$	(17,588	)	$	4,317
BALANCE SHEET
	31-Dec-13
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
	Subsidiaries			Subsidiaries			(Parent			Elims
							Company)
	(Millions)
ASSETS
Current assets:
Cash and cash equivalents	$	6		$	269		$	—		$	—		$	275
Restricted cash	—			5			—			—			5
Receivables, net	387			1,306			16			(649		)	1,060
Inventories	279			377			—			—			656
Deferred income taxes	87			—			7			(23		)	71
Prepayments and other	35			188			—			—			223
Total current assets	794			2,145			23			(672		)	2,290
Other assets:
Investment in affiliated companies	944			—			696			(1,640		)	—
Notes and advances receivable from affiliates	1,026			7,320			4,826			(13,172		)	—
Long-term receivables, net	12			2			—			—			14
Goodwill	22			47			—			—			69
Intangibles, net	13			17			—			—			30
Deferred income taxes	72			9			44			—			125
Other	44			60			23			—			127
	2,133			7,455			5,589			(14,812		)	365
Plant, property, and equipment, at cost	1,173			2,325			—			—			3,498
Less — Accumulated depreciation and amortization	(807		)	(1,516		)	—			—			(2,323		)
	366			809			—			—			1,175
Total assets	$	3,293		$	10,409		$	5,612		$	(15,484	)	$	3,830
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	$	—		$	68		$	15		$	—		$	83
Short-term debt — affiliated	247			176			10			(433		)	—
Trade payables	521			1,011			—			(173		)	1,359
Accrued taxes	9			31			—			—			40
Other	128			285			9			(66		)	356
Total current liabilities	905			1,571			34			(672		)	1,838
Long-term debt — non-affiliated	—			8			1,011			—			1,019
Long-term debt — affiliated	1,700			7,338			4,134			(13,172		)	—
Deferred income taxes	—			28			—			—			28
Postretirement benefits and other liabilities	357			92			—			4			453
Commitments and contingencies
Total liabilities	2,962			9,037			5,179			(13,840		)	3,338
Redeemable noncontrolling interests	—			20			—			—			20
Tenneco Inc. shareholders’ equity	331			1,313			433			(1,644		)	433
Noncontrolling interests	—			39			—			—			39
Total equity	331			1,352			433			(1,644		)	472
Total liabilities, redeemable noncontrolling interests and equity	$	3,293		$	10,409		$	5,612		$	(15,484	)	$	3,830
STATEMENT OF CASH FLOWS
	Three Months Ended June 30, 2014
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
	Subsidiaries			Subsidiaries			(Parent			Elims
							Company)
	(Millions)
Operating Activities
Net cash provided by operating activities	$	52		$	80		$	8		$	(26	)	$	114
Investing Activities
Cash payments for plant, property, and equipment	(22		)	(62		)	—			—			(84		)
Cash payments for software related intangible assets	(2		)	—			—			—			(2		)
Changes in restricted cash	—			1			—			—			1
Net cash used by investing activities	(24		)	(61		)	—			—			(85		)
Financing Activities
Issuance of common shares	—			—			1			—			1
Tax benefit from stock-based compensation	—			—			5			—			5
Retirement of long-term debt	—			—			(7		)	—			(7		)
Issuance of long-term debt				45						—			45
Increase (decrease) in bank overdrafts	—			(5		)				—			(5		)
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	—			(17		)	(13		)	—			(30		)
Net increase (decrease) in short-term borrowings secured by accounts receivables	—			—			(30		)	—			(30		)
Intercompany dividend payments and net increase (decrease) in intercompany obligations	(30		)	(32		)	36			26			—
Capital contribution from noncontrolling interest partners	—			4			—			—			4
Net cash used by financing activities	(30		)	(28		)	(8		)	26			(40		)
Effect of foreign exchange rate changes on cash and cash equivalents	—			4			—			—			4
Increase (decrease) in cash and cash equivalents	(2		)	(5		)	—			—			(7		)
Cash and cash equivalents, April 1	2			265			—			—			267
Cash and cash equivalents, June 30 (Note)	$	—		$	260		$	—		$	—		$	260
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 June 30, 2013
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass			Consolidated
	Subsidiaries			Subsidiaries			(Parent			&
							Company)			Elims
	(Millions)
Operating Activities
Net cash provided (used) by operating activities	$	87		$	113		$	(27	)	$	(40	)	$	133
Investing Activities
Proceeds from sale of assets	1			(1		)	—			—			—
Cash payments for plant, property, and equipment	(23		)	(31		)	—			—			(54		)
Cash payments for software related intangible assets	(6		)	—			—			—			(6		)
Changes in restricted cash	—			4									4
Net cash used by investing activities	(29		)	(28		)	—			—			(56		)
Financing Activities
Issuance of common shares	—			—			12			—			12
Retirement of long-term debt	—			(1		)	(2		)	—			(3		)
Purchase of common stock under the share repurchase program	—			—			(2		)	—			(2		)
Increase (decrease) in bank overdrafts	40			4			—			—			44
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt	—			7			(91		)	—			(84		)
Intercompany dividend payments and net increase (decrease) in intercompany obligations	(102		)	(48		)	110			40			—
Distributions to noncontrolling interest partners	—			(23		)	—			—			(23		)
Net cash provided (used) by financing activities	(62		)	(61		)	27			40			(56		)
Effect of foreign exchange rate changes on cash and cash equivalents	—			(19		)	—			—			(19		)
Increase (decrease) in cash and cash equivalents	(3		)	5			—			—			2
Cash and cash equivalents, April 1	4			229			—			—			233
Cash and cash equivalents, June 30 (Note)	$	1		$	234		$	—		$	—		$	235
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
	For the Six Months Ended June 30, 2014
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass			Consolidated
	Subsidiaries			Subsidiaries			(Parent			&
							Company)			Elims
	(Millions)
Operating Activities
Net cash provided (used) by operating activities	$	(156	)	$	170		$	(14	)	$	(26	)	$	(26	)
Investing Activities
Proceeds from sale of assets	—			—			—			—			—
Cash payments for plant, property, and equipment	(47		)	(120		)	—			—			(167		)
Cash payments for software related intangible assets	(6		)	(3		)	—			—			(9		)
Changes in restricted cash	—			—			—			—			—
Net cash used by investing activities	(53		)	(123		)	—			—			(176		)
Financing Activities
Issuance (Repurchase) of common and treasury shares	—			—			(1		)	—			(1		)
Tax benefit from stock-based compensation	—			—			17			—			17
Retirement of long-term debt	—			—			(10		)				(10		)
Issuance of long-term debt	—			45			—			—			45
Increase (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	—			7			160			—			167
Net increase (decrease) in short-term borrowings secured by accounts receivables	—			—			(10		)	—			(10		)
Intercompany dividend payments and net increase (decrease) in intercompany obligations	203			(87		)	(142		)	26			—
Capital contribution from noncontrolling interest partners	—			5			—			—			5
Distributions to noncontrolling interest partners	—			(23		)				—			(23		)
Net cash provided (used) by financing activities	203			(54		)	14			26			189
Effect of foreign exchange rate changes on cash and cash equivalents	—			(2		)	—			—			(2		)
Increase (decrease) in cash and cash equivalents	(6		)	(9		)	—			—			(15		)
Cash and cash equivalents, January 1	6			269			—			—			275
Cash and cash equivalents, June 30 (Note)	$	—		$	260		$	—		$	—		$	260
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
	Six Months Ended June 30, 2013
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass			Consolidated
	Subsidiaries			Subsidiaries			(Parent			&
							Company)			Elims
	(Millions)
Operating Activities
Net cash provided (used) by operating activities	$	(15	)	$	128		$	(32	)	$	(40	)	$	41
Investing Activities
Proceeds from sale of assets	1			1			—			—			2
Cash payments for plant, property, and equipment	(55		)	(69		)	—			—			(124		)
Cash payments for software related intangible assets	(9		)	(3		)	—			—			(12		)
Changes in restricted cash	—			(5		)	—			—			(5		)
Net cash used by investing activities	(63		)	(76		)	—			—			(139		)
Financing Activities
Issuance of common and treasury shares	—			—			13			—			13
Retirement of long-term debt	—			(1		)	(7		)	—			(8		)
Purchase of common stock under the share repurchase program	—			—			(2		)	—			(2		)
Increase (decrease) in bank overdrafts	40			(5		)	—			—			35
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt	—			10			97			—			107
Intercompany dividend payments and net increase (decrease) in intercompany obligations	35			(6		)	(69		)	40			—
Capital contribution from noncontrolling interest partners	—			—			—			—			—
Distributions to noncontrolling interest partners	—			(23		)	—			—			(23		)
Net cash provided (used) by financing activities	75			(25		)	32			40			122
Effect of foreign exchange rate changes on cash and cash equivalents	—			(12		)	—			—			(12		)
Increase (decrease) in cash and cash equivalents	(3		)	15			—			—			12
Cash and cash equivalents, January 1	4			219			—			—			223
Cash and cash equivalents, June 30 (Note)	$	1		$	234		$	—		$	—		$	235
Note:	Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase.

Financial_Instruments_Tables

Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

'

Carrying and Estimated Fair Value

'

The carrying and estimated fair values of our financial instruments by class at June 30, 2014 and December 31, 2013 were as follows:

30-Jun-14

31-Dec-13

Carrying

Fair

Carrying

Fair

Amount

Value

Amount

Value

(Millions)

Long-term debt (including current maturities)

$

1,207

$

1,262

$

1,021

$

1,089

Instruments with off-balance sheet risk:

Foreign exchange forward contracts:

Asset derivative contracts

—

—

—

—

Foreign Exchange Forward Contracts Fair Value on Gross Basis

'

The fair value of our foreign exchange forward contracts, presented on a gross basis at June 30, 2014 and December 31, 2013, respectively, was as follows:

Fair Value of Derivative Instruments

30-Jun-14

31-Dec-13

Asset

Liability

Total

Asset

Liability

Total

Derivatives

Derivatives

Derivatives

Derivatives

(Millions)

Foreign exchange forward contracts

$—

$—

$—

$

—

$—

$—

Fair Value of Financial Assets on Recurring Basis

'

The fair value of our recurring financial assets at June 30, 2014 and December 31, 2013, respectively, are as follows:

June 30, 2014

December 31, 2013

Level 1

Level 2

Level 3

Level 1

Level 2

Level 3

(Millions)

Financial Assets:

Foreign exchange forward contracts

n/a

$

—

n/a

n/a

$

—

n/a

Fair Value Hierarchy

'

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.

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 June 30, 2014 (all of which mature in 2014):

Notional Amount

in Foreign Currency

(Millions)

Australian dollars

—Purchase

2

—Sell

(1

)

British pounds

—Purchase

34

—Sell

(2

)

Canadian dollars

—Sell

(18

)

European euro

—Purchase

2

—Sell

(9

)

South African rand

—Purchase

127

—Sell

(3

)

Japanese yen

—Purchase

271

—Sell

(531

)

Polish zloty

—Purchase

25

U.S. dollars

—Purchase

29

—Sell

(74

)

Other

—Purchase

1

LongTerm_Debt_and_Financing_Ar1

Long-Term Debt and Financing Arrangements (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Financial Ratios under Senior Credit Facility	'
	The financial ratios required under the amended and restated senior credit facility, and the actual ratios we achieved for the two quarters of 2014, are as follows:
		Quarter Ended
		June 30, 2014		March 31, 2014
		Required	Actual	Required	Actual
	Leverage Ratio (maximum)	3.5	1.57	3.5	1.63
	Interest Coverage Ratio (minimum)	2.75	10.62	2.75	10.39

Restructuring_and_Other_Charge1

Restructuring and Other Charges (Tables)	6 Months Ended
	Jun. 30, 2014
Restructuring Reserve [Abstract]	'
Roll Forward of Restructuring Reserve	'
	Amounts related to activities that are part of our restructuring reserves are as follows:
		December 31,		2014	2014		30-Jun-14
		2013		Expenses	Cash		Restructuring
		Restructuring			Payments		Reserve
		Reserve
		(Millions)
	Employee Severance, Termination Benefits and Other Related Costs		$44	19	(19	)		$44

Environmental_Matters_Litigati1

Environmental Matters, Litigation and Product Warranties (Tables)	6 Months Ended
	Jun. 30, 2014
Environmental Matters, Litigation and Product Warranties [Abstract]	'
Warranty Accrual Rollforward	'
	Below is a table that shows the activity in the warranty accrual accounts:
		Six Months Ended June 30,
		2014			2013
		(Millions)
	Beginning Balance January 1,	$	24		$	23
	Accruals related to product warranties	12			6
	Reductions for payments made	(10		)	(9		)
	Ending Balance June 30,	$	26		$	20

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2014
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 June 30, 2014		Three Months Ended June 30, 2013		Six Months Ended June 30, 2014		Six Months Ended June 30, 2013
		(Millions Except Share and Per Share Amounts)
	Basic earnings per share —
	Net income attributable to Tenneco Inc.	$	81	$	63	$	127	$	117
	Weighted Average shares of common stock outstanding	60,736,737		60,542,361		60,631,080		60,424,540
	Earnings per share of common stock	$	1.34	$	1.04	$	2.1	$	1.94
	Diluted earnings per share —
	Net income attributable to Tenneco Inc.	$	81	$	63	$	127	$	117
	Weighted Average shares of common stock outstanding	60,736,737		60,542,361		60,631,080		60,424,540
	Effect of dilutive securities:
	Restricted stock	104,679		170,950		139,024		157,551
	Stock options	820,480		1,010,813		813,621		950,459
	Weighted Average shares of common stock outstanding including dilutive securities	61,661,896		61,724,124		61,583,725		61,532,550
	Earnings per share of common stock	$	1.32	$	1.02	$	2.06	$	1.91

Common_Stock_Tables

Common Stock (Tables)	6 Months Ended
	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Assumptions Used for Calculating Fair Values of Stock Option Awards	'
	The fair value of share-based awards is determined at the time the awards are granted which is generally in January of each year, and requires judgment in estimating employee and market behavior.
		Six Months Ended June 30,
		2014				2013
	Stock Options Granted
	Weighted average grant date fair value, per share	$	26.46			$	19.84
	Weighted average assumptions used:
	Expected volatility	52.8		%		66.4		%
	Expected lives	5				4.9
	Risk-free interest rates	1.7		%		0.7		%
	Dividend yields	—		%		—		%
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:
		Six Months Ended June 30, 2014
		Shares			Weighted Avg.				Weighted Avg.	Aggregate
		Under			Exercise				Remaining	Intrinsic
		Option			Prices				Life in Years	Value
										(Millions)
	Outstanding Stock Options
	Outstanding, January 1, 2014	1,983,573			$	22.93			4.5	$	62
	Granted	192,624			56.23
	Canceled	(31,299	)		19.78
	Forfeited	(300	)		22.77
	Exercised	(25,595	)		14.72					1
	Outstanding, March 31, 2014	2,119,003			$	26.1			4.6	$	67
	Granted	—			—
	Forfeited	—			—
	Exercised	(32,233	)		25.49					1
	Outstanding, June 30, 2014	2,086,770			$	26.11			4.3	$	75
Nonvested Restricted Shares	'
	Restricted Stock — The following table reflects the status for all nonvested restricted shares for the period indicated:
		Six Months Ended June 30, 2014
		Shares			Weighted Avg.
					Grant Date
					Fair Value
	Nonvested Restricted Shares
	Nonvested balance at January 1, 2014	368,268			$	34.9
	Granted	131,561			54.9
	Vested	(186,112	)		36.57
	Forfeited	—			—
	Nonvested balance at March 31, 2014	313,717			$	42.3
	Granted	2,838			66.96
	Vested	(2,286	)		31.63
	Forfeited	(575	)		38.52
	Nonvested balance at June 30, 2014	313,694			$	42.6

Pension_Plans_Postretirement_a1

Pension Plans, Postretirement and Other Employee Benefits (Tables)	6 Months Ended
	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Components of Net Periodic Benefit Cost	'
	Net periodic pension costs and postretirement benefit costs consist of the following components:
		Three Months Ended June 30,
		Pension												Postretirement
		2014						2013						2014			2013
		US			Foreign			US			Foreign			US			US
		(Millions)
	Service cost — benefits earned during the period	$	—		$	2		$	1		$	3		$	—		$	—
	Interest cost	5			4			4			4			2			2
	Expected return on plan assets	(6		)	(5		)	(6		)	(5		)	—			—
	Net amortization:
	Actuarial loss	2			2			3			3			1			1
	Prior service cost (credit)	—			—			—			1			(2		)	(2		)
	Net pension and postretirement costs	$	1		$	3		$	2		$	6		$	1		$	1
		Six Months Ended June 30,
		Pension												Postretirement
		2014						2013						2014			2013
		US			Foreign			US			Foreign			US			US
		(Millions)
	Service cost — benefits earned during the period	$	—		$	4		$	1		$	5		$	—		$	—
	Interest cost	10			9			9			8			3			3
	Expected return on plan assets	(12		)	(12		)	(11		)	(10		)	—			—
	Net amortization:
	Actuarial loss	4			4			5			6			1			2
	Prior service cost (credit)	—			1			—			1			(3		)	(3		)
	Net pension and postretirement costs	$	2		$	6		$	4		$	10		$	1		$	2
	For
Amounts Recognized for Pension and Postretirement Benefits in Other Comprehensive Income	'
	Amounts recognized for pension and postretirement benefits in other comprehensive income for the three and six month periods ended June 30, 2014 and 2013 include the following components:
		Three Months Ended June 30,
		2014									2013
		Before-Tax			Tax			Net-of-Tax			Before-			Tax			Net-of-Tax
		Amount			Benefit			Amount			Tax			Benefit			Amount
											Amount
		(Millions)
	Defined benefit pension and postretirement plans:
	Amortization of prior service cost included in net periodic pension and postretirement cost	$	(2	)	$	—		$	(2	)	$	(1	)	$	—		$	(1	)
	Amortization of actuarial loss included in net periodic pension and postretirement cost	5			—			5			7			—			7
	Other comprehensive income – pension benefits	$	3		$	—		$	3		$	6		$	—		$	6
		Six Months Ended June 30,
		2014									2013
		Before-Tax			Tax			Net-of-Tax			Before-			Tax			Net-of-Tax
		Amount			Benefit			Amount			Tax			Benefit			Amount
											Amount
		(Millions)
	Defined benefit pension and postretirement plans:
	Amortization of prior service cost included in net periodic pension and postretirement cost	$	(2	)	$	—		$	(2	)	$	(2	)	$	—		$	(2	)
	Amortization of actuarial loss included in net periodic pension and postretirement cost	9			1			8			13			(1		)	12
	Other comprehensive income – pension benefits	$	7		$	1		$	6		$	11		$	(1	)	$	10

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	The following table summarizes certain Tenneco Inc. segment information:
		Clean Air Division						Ride Performance Division
		North		Europe, South America & India		Asia		North		Europe, South America & India		Asia		Other			Reclass & Elims			Total
		America				Pacific		America				Pacific
		(Millions)
	At June 30, 2014 and for the Three Months Ended June 30, 2014
	Revenues from external customers	$	755	$	523	$	263	$	364	$	280	$	56	$	—		$	—		$	2,241
	Intersegment revenues	7		28		—		3		11		11		—			(60		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	74		18		23		48		14		8		(29		)	—			156
	Total assets	1,238		946		589		718		558		233		—			35			4,317
	At June 30, 2013 and for the Three Months Ended June 30, 2013
	Revenues from external customers	687		516		203		324		281		56		—			—			2,067
	Intersegment revenues	1		26		—		3		9		8		—			(47		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	68		18		21		36		14		6		(22		)	—			141
	Total assets	1,099		869		451		682		593		208		—			37			3,939
	At June 30, 2014 and for the Six Months Ended June 30, 2014
	Revenues from external customers	$	1,453	$	1,029	$	503	$	699	$	543	$	108	$	—		$	—		$	4,335
	Intersegment revenues	14		58		—		6		21		19		—			(118		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	130		27		43		78		30		15		(54		)	—			269
	Total assets	1,238		946		589		718		558		233		—			35			4,317
	At June 30, 2013 and for the Six Months Ended June 30, 2013
	Revenues from external customers	1,333		983		386		631		533		104		—			—			3,970
	Intersegment revenues	2		57		—		5		21		15		—			(100		)	—
	EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	117		29		36		61		24		10		(43		)	—			234
	Total assets	1,099		869		451		682		593		208		—			37			3,939

Supplemental_Guarantor_Condens1

Supplemental Guarantor Condensed Consolidating Financial Statements (Tables)	6 Months Ended
	Jun. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Statement of Comprehensive Income (Loss)	'
	STATEMENT OF COMPREHENSIVE INCOME (LOSS)
		For the Three Months Ended June 30, 2014
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
		Subsidiaries			Subsidiaries			(Parent			Elims
								Company)
		(Millions)
	Revenues
	Net sales and operating revenues —
	External	$	1,007		$	1,234		$	—		$	—		$	2,241
	Affiliated companies	103			157			—			(260		)	—
		1,110			1,391			—			(260		)	2,241
	Costs and expenses
	Cost of sales (exclusive of depreciation and amortization shown below)	975			1,136			—			(260		)	1,851
	Engineering, research, and development	18			24			—			—			42
	Selling, general, and administrative	55			82			2			—			139
	Depreciation and amortization of other intangibles	21			31			—			—			52
		1,069			1,273			2			(260		)	2,084
	Other income (expense)
	Loss on sale of receivables	—			(1		)	—			—			(1		)
	Other income (loss)	27			(1		)	—			(26		)	—
		27			(2		)	—			(26		)	(1		)
	Earnings (loss) before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	68			116			(2		)	(26		)	156
	Interest expense —
	External (net of interest capitalized)	(1		)	1			19			—			19
	Affiliated companies (net of interest income)	21			(21		)	—			—			—
	Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	48			136			(21		)	(26		)	137
	Income tax expense	6			40									46
	Equity in net income (loss) from affiliated companies	83			—			102			(185		)	—
	Net Income (loss)	125			96			81			(211		)	91
	Less: Net income attributable to noncontrolling interests	—			10			—			—			10
	Net income (loss) attributable to Tenneco Inc.	$	125		$	86		$	81		$	(211	)	$	81
	Comprehensive income (loss) attributable to Tenneco Inc.	$	123		$	97		$	90		$	(220	)	$	90
	STATEMENT OF COMPREHENSIVE INCOME (LOSS)
		For the Three Months Ended June 30, 2013
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
		Subsidiaries			Subsidiaries			(Parent			Elims
								Company)
		(Millions)
	Revenues
	Net sales and operating revenues —
	External	$	904		$	1,163		$	—		$	—		$	2,067
	Affiliated companies	92			141			—			(233		)	—
		996			1,304			—			(233		)	2,067
	Costs and expenses
	Cost of sales (exclusive of depreciation and amortization shown below)	776			1,192			—			(232		)	1,736
	Engineering, research, and development	14			19			—			—			33
	Selling, general, and administrative	45			60			1			—			106
	Depreciation and amortization of other intangibles	19			31			—			—			50
		854			1,302			1			(232		)	1,925
	Other income (expense)
	Loss on sale of receivables	—			(1		)	—			—			(1		)
	Other income (expense)	34			5			—			(39		)	—
		34			4			—			(39		)	(1		)
	Earnings before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	176			6			(1		)	(40		)	141
	Interest expense —
	External (net of interest capitalized)	(1		)	1			20			—			20
	Affiliated companies (net of interest income)	18			(18		)	—			—			—
	Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	159			23			(21		)	(40		)	121
	Income tax expense	40			7			—			—			47
	Equity in net income (loss) from affiliated companies	2			—			84			(86		)	—
	Net income (loss)	121			16			63			(126		)	74
	Less: Net income attributable to noncontrolling interests	—			11			—			—			11
	Net income (loss) attributable to Tenneco Inc.	$	121		$	5		$	63		$	(126	)	$	63
Comprehensive income (loss) attributable to Tenneco Inc.	$	126		$	(18	)	$	45		$	(108	)	$	45
STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	For the Six Months Ended June 30, 2014
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
	Subsidiaries			Subsidiaries			(Parent			Elims
							Company)
	(Millions)
Revenues
Net sales and operating revenues —
External	$	1,927		$	2,408		$	—		$	—		$	4,335
Affiliated companies	206			305			—			(511		)	—
	2,133			2,713			—			(511		)	4,335
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,777			2,339			—			(511		)	3,605
Engineering, research, and development	40			44			—			—			84
Selling, general, and administrative	106			161			4			—			271
Depreciation and amortization of other intangibles	42			61			—			—			103
	1,965			2,605			4			(511		)	4,063
Other income (expense)
Loss on sale of receivables	—			(2		)	—			—			(2		)
Other income (expense)	25			—			—			(26		)	(1		)
	25			(2		)	—			(26		)	(3		)
Earnings before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	193			106			(4		)	(26		)	269
Interest expense —
External (net of interest capitalized)	(1		)	1			38						38
Affiliated companies (net of interest income)	37			(37		)	—			—			—
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	157			142			(42		)	(26		)	231
Income tax expense	36			50			—			—			86
Equity in net income (loss) from affiliated companies	68			—			169			(237		)	—
Net income (loss)	189			92			127			(263		)	145
Less: Net income attributable to noncontrolling interests	—			18			—			—			18
Net income (loss) attributable to Tenneco Inc.	$	189		$	74		$	127		$	(263	)	$	127
Comprehensive income (loss) attributable to Tenneco Inc.	$	188		$	81		$	133		$	(269	)	$	133
STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	For the Six Months Ended June 30, 2013
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
	Subsidiaries			Subsidiaries			(Parent			Elims
							Company)
	(Millions)
Revenues
Net sales and operating revenues —
External	$	1,756		$	2,214		$	—		$	—		$	3,970
Affiliated companies	171			291			—			(462		)	—
	1,927			2,505			—			(462		)	3,970
Costs and expenses
Cost of sales (exclusive of depreciation and amortization shown below)	1,518			2,283			—			(461		)	3,340
Engineering, research, and development	29			39			—			—			68
Selling, general, and administrative	98			124			3			—			225
Depreciation and amortization of other intangibles	38			62			—			—			100
	1,683			2,508			3			(461		)	3,733
Other income (expense)
Loss on sale of receivables	—			(2		)	—			—			(2		)
Other income (expense)	33			5			—			(39		)	(1		)
	33			3			—			(39		)	(3		)
Earnings before interest expense, income taxes, noncontrolling interests, and equity in net income from affiliated companies	277			—			(3		)	(40		)	234
Interest expense —
External (net of interest capitalized)	(1		)	2			39			—			40
Affiliated companies (net of interest income)	36			(37		)	1			—			—
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	242			35			(43		)	(40		)	194
Income (benefit) tax expense	46			13						—			59
Equity in net income (loss) from affiliated companies	(3		)	—			160			(157		)	—
Net income (loss)	193			22			117			(197		)	135
Less: Net income attributable to noncontrolling interests	—			18			—			—			18
Net income (loss) attributable to Tenneco Inc.	$	193		$	4		$	117		$	(197	)	$	117
Comprehensive income (loss) attributable to Tenneco Inc.	$	193		$	(36	)	$	77		$	(157	)	$	77
Balance Sheet	'
	BALANCE SHEET
		30-Jun-14
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
		Subsidiaries			Subsidiaries			(Parent			Elims
								Company)
		(Millions)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	—		$	260		$	—		$	—		$	260
	Restricted cash	—			5			—			—			5
	Receivables, net	569			1,505			—			(716		)	1,358
	Inventories	321			440			—			—			761
	Deferred income taxes	88			—			7			(23		)	72
	Prepayments and other	48			225			—			—			273
	Total current assets	1,026			2,435			7			(739		)	2,729
	Other assets:
	Investment in affiliated companies	998			—			907			(1,905		)	—
	Notes and advances receivable from affiliates	983			9,010			4,951			(14,944		)	—
	Long-term receivables, net	12			2			—			—			14
	Goodwill	21			47			—			—			68
	Intangibles, net	12			16			—			—			28
	Deferred income taxes	60			9			52			—			121
	Other	44			61			21			—			126
		2,130			9,145			5,931			(16,849		)	357
	Plant, property, and equipment, at cost	1,202			2,415			—			—			3,617
	Less — Accumulated depreciation and amortization	(826		)	(1,560		)	—			—			(2,386		)
		376			855			—			—			1,231
	Total assets	$	3,532		$	12,435		$	5,938		$	(17,588	)	$	4,317
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Current liabilities:
	Short-term debt (including current maturities of long-term debt)
	Short-term debt — non-affiliated	$	—		$	76		$	15		$	—		$	91
	Short-term debt — affiliated	205			295			10			(510		)	—
	Trade payables	541			1,109			—			(156		)	1,494
	Accrued taxes	(12		)	25			28			—			41
	Other	144			303			9			(73		)	383
	Total current liabilities	878			1,808			62			(739		)	2,009
	Long-term debt — non-affiliated	—			53			1,153			—			1,206
	Long-term debt — affiliated	1,831			8,978			4,135			(14,944		)	—
	Deferred income taxes	—			29			—			—			29
	Postretirement benefits and other liabilities	342			81			(1		)	4			426
	Commitments and contingencies
	Total liabilities	3,051			10,949			5,349			(15,679		)	3,670
	Redeemable noncontrolling interests	—			22			—			—			22
	Tenneco Inc. shareholders’ equity	481			1,428			589			(1,909		)	589
	Noncontrolling interests	—			36			—			—			36
	Total equity	481			1,464			589			(1,909		)	625
	Total liabilities, redeemable noncontrolling interests and equity	$	3,532		$	12,435		$	5,938		$	(17,588	)	$	4,317
	BALANCE SHEET
		31-Dec-13
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
		Subsidiaries			Subsidiaries			(Parent			Elims
								Company)
		(Millions)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	6		$	269		$	—		$	—		$	275
	Restricted cash	—			5			—			—			5
	Receivables, net	387			1,306			16			(649		)	1,060
	Inventories	279			377			—			—			656
	Deferred income taxes	87			—			7			(23		)	71
	Prepayments and other	35			188			—			—			223
	Total current assets	794			2,145			23			(672		)	2,290
Other assets:
Investment in affiliated companies	944			—			696			(1,640		)	—
Notes and advances receivable from affiliates	1,026			7,320			4,826			(13,172		)	—
Long-term receivables, net	12			2			—			—			14
Goodwill	22			47			—			—			69
Intangibles, net	13			17			—			—			30
Deferred income taxes	72			9			44			—			125
Other	44			60			23			—			127
	2,133			7,455			5,589			(14,812		)	365
Plant, property, and equipment, at cost	1,173			2,325			—			—			3,498
Less — Accumulated depreciation and amortization	(807		)	(1,516		)	—			—			(2,323		)
	366			809			—			—			1,175
Total assets	$	3,293		$	10,409		$	5,612		$	(15,484	)	$	3,830
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Short-term debt (including current maturities of long-term debt)
Short-term debt — non-affiliated	$	—		$	68		$	15		$	—		$	83
Short-term debt — affiliated	247			176			10			(433		)	—
Trade payables	521			1,011			—			(173		)	1,359
Accrued taxes	9			31			—			—			40
Other	128			285			9			(66		)	356
Total current liabilities	905			1,571			34			(672		)	1,838
Long-term debt — non-affiliated	—			8			1,011			—			1,019
Long-term debt — affiliated	1,700			7,338			4,134			(13,172		)	—
Deferred income taxes	—			28			—			—			28
Postretirement benefits and other liabilities	357			92			—			4			453
Commitments and contingencies
Total liabilities	2,962			9,037			5,179			(13,840		)	3,338
Redeemable noncontrolling interests	—			20			—			—			20
Tenneco Inc. shareholders’ equity	331			1,313			433			(1,644		)	433
Noncontrolling interests	—			39			—			—			39
Total equity	331			1,352			433			(1,644		)	472
Total liabilities, redeemable noncontrolling interests and equity	$	3,293		$	10,409		$	5,612		$	(15,484	)	$	3,830
Statement of Cash Flows	'
	STATEMENT OF CASH FLOWS
		Three Months Ended June 30, 2014
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass &			Consolidated
		Subsidiaries			Subsidiaries			(Parent			Elims
								Company)
		(Millions)
	Operating Activities
	Net cash provided by operating activities	$	52		$	80		$	8		$	(26	)	$	114
	Investing Activities
	Cash payments for plant, property, and equipment	(22		)	(62		)	—			—			(84		)
	Cash payments for software related intangible assets	(2		)	—			—			—			(2		)
	Changes in restricted cash	—			1			—			—			1
	Net cash used by investing activities	(24		)	(61		)	—			—			(85		)
	Financing Activities
	Issuance of common shares	—			—			1			—			1
	Tax benefit from stock-based compensation	—			—			5			—			5
	Retirement of long-term debt	—			—			(7		)	—			(7		)
	Issuance of long-term debt				45						—			45
	Increase (decrease) in bank overdrafts	—			(5		)				—			(5		)
	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	—			(17		)	(13		)	—			(30		)
	Net increase (decrease) in short-term borrowings secured by accounts receivables	—			—			(30		)	—			(30		)
	Intercompany dividend payments and net increase (decrease) in intercompany obligations	(30		)	(32		)	36			26			—
	Capital contribution from noncontrolling interest partners	—			4			—			—			4
	Net cash used by financing activities	(30		)	(28		)	(8		)	26			(40		)
	Effect of foreign exchange rate changes on cash and cash equivalents	—			4			—			—			4
	Increase (decrease) in cash and cash equivalents	(2		)	(5		)	—			—			(7		)
	Cash and cash equivalents, April 1	2			265			—			—			267
	Cash and cash equivalents, June 30 (Note)	$	—		$	260		$	—		$	—		$	260
	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 June 30, 2013
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass			Consolidated
		Subsidiaries			Subsidiaries			(Parent			&
								Company)			Elims
		(Millions)
	Operating Activities
	Net cash provided (used) by operating activities	$	87		$	113		$	(27	)	$	(40	)	$	133
	Investing Activities
	Proceeds from sale of assets	1			(1		)	—			—			—
	Cash payments for plant, property, and equipment	(23		)	(31		)	—			—			(54		)
	Cash payments for software related intangible assets	(6		)	—			—			—			(6		)
	Changes in restricted cash	—			4									4
	Net cash used by investing activities	(29		)	(28		)	—			—			(56		)
	Financing Activities
	Issuance of common shares	—			—			12			—			12
	Retirement of long-term debt	—			(1		)	(2		)	—			(3		)
	Purchase of common stock under the share repurchase program	—			—			(2		)	—			(2		)
	Increase (decrease) in bank overdrafts	40			4			—			—			44
	Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt	—			7			(91		)	—			(84		)
	Intercompany dividend payments and net increase (decrease) in intercompany obligations	(102		)	(48		)	110			40			—
	Distributions to noncontrolling interest partners	—			(23		)	—			—			(23		)
	Net cash provided (used) by financing activities	(62		)	(61		)	27			40			(56		)
	Effect of foreign exchange rate changes on cash and cash equivalents	—			(19		)	—			—			(19		)
	Increase (decrease) in cash and cash equivalents	(3		)	5			—			—			2
	Cash and cash equivalents, April 1	4			229			—			—			233
	Cash and cash equivalents, June 30 (Note)	$	1		$	234		$	—		$	—		$	235
	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
		For the Six Months Ended June 30, 2014
		Guarantor			Nonguarantor			Tenneco Inc.			Reclass			Consolidated
		Subsidiaries			Subsidiaries			(Parent			&
								Company)			Elims
		(Millions)
Operating Activities
Net cash provided (used) by operating activities	$	(156	)	$	170		$	(14	)	$	(26	)	$	(26	)
Investing Activities
Proceeds from sale of assets	—			—			—			—			—
Cash payments for plant, property, and equipment	(47		)	(120		)	—			—			(167		)
Cash payments for software related intangible assets	(6		)	(3		)	—			—			(9		)
Changes in restricted cash	—			—			—			—			—
Net cash used by investing activities	(53		)	(123		)	—			—			(176		)
Financing Activities
Issuance (Repurchase) of common and treasury shares	—			—			(1		)	—			(1		)
Tax benefit from stock-based compensation	—			—			17			—			17
Retirement of long-term debt	—			—			(10		)				(10		)
Issuance of long-term debt	—			45			—			—			45
Increase (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	—			7			160			—			167
Net increase (decrease) in short-term borrowings secured by accounts receivables	—			—			(10		)	—			(10		)
Intercompany dividend payments and net increase (decrease) in intercompany obligations	203			(87		)	(142		)	26			—
Capital contribution from noncontrolling interest partners	—			5			—			—			5
Distributions to noncontrolling interest partners	—			(23		)				—			(23		)
Net cash provided (used) by financing activities	203			(54		)	14			26			189
Effect of foreign exchange rate changes on cash and cash equivalents	—			(2		)	—			—			(2		)
Increase (decrease) in cash and cash equivalents	(6		)	(9		)	—			—			(15		)
Cash and cash equivalents, January 1	6			269			—			—			275
Cash and cash equivalents, June 30 (Note)	$	—		$	260		$	—		$	—		$	260
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
	Six Months Ended June 30, 2013
	Guarantor			Nonguarantor			Tenneco Inc.			Reclass			Consolidated
	Subsidiaries			Subsidiaries			(Parent			&
							Company)			Elims
	(Millions)
Operating Activities
Net cash provided (used) by operating activities	$	(15	)	$	128		$	(32	)	$	(40	)	$	41
Investing Activities
Proceeds from sale of assets	1			1			—			—			2
Cash payments for plant, property, and equipment	(55		)	(69		)	—			—			(124		)
Cash payments for software related intangible assets	(9		)	(3		)	—			—			(12		)
Changes in restricted cash	—			(5		)	—			—			(5		)
Net cash used by investing activities	(63		)	(76		)	—			—			(139		)
Financing Activities
Issuance of common and treasury shares	—			—			13			—			13
Retirement of long-term debt	—			(1		)	(7		)	—			(8		)
Purchase of common stock under the share repurchase program	—			—			(2		)	—			(2		)
Increase (decrease) in bank overdrafts	40			(5		)	—			—			35
Net increase (decrease) in revolver borrowings and short-term debt excluding current maturities of long-term debt	—			10			97			—			107
Intercompany dividend payments and net increase (decrease) in intercompany obligations	35			(6		)	(69		)	40			—
Capital contribution from noncontrolling interest partners	—			—			—			—			—
Distributions to noncontrolling interest partners	—			(23		)	—			—			(23		)
Net cash provided (used) by financing activities	75			(25		)	32			40			122
Effect of foreign exchange rate changes on cash and cash equivalents	—			(12		)	—			—			(12		)
Increase (decrease) in cash and cash equivalents	(3		)	15			—			—			12
Cash and cash equivalents, January 1	4			219			—			—			223
Cash and cash equivalents, June 30 (Note)	$	1		$	234		$	—		$	—		$	235
Note:	Cash and cash equivalents include highly liquid investments with a maturity of three months or less at the date of purchase.

Consolidation_and_Presentation1

Consolidation and Presentation - Additional Information (Detail)	Jun. 30, 2014
Minimum [Member]	'
Organization Consolidation And Presentation Of Financial Statements [Line Items]	'
Range of percentages of investments, equity method investments	20.00%
Maximum [Member]	'
Organization Consolidation And Presentation Of Financial Statements [Line Items]	'
Range of percentages of investments, equity method investments	50.00%

Carrying_and_Estimated_Fair_Va

Carrying and Estimated Fair Value (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Instruments with off-balance sheet risk:	'	'
Asset derivative contracts	$0	$0
Reported Value Measurement [Member]	'	'
Carrying and estimated fair value	'	'
Long-term debt (including current maturities)	1,207	1,021
Instruments with off-balance sheet risk:	'	'
Asset derivative contracts	0	0
Estimate of Fair Value Measurement [Member]	'	'
Carrying and estimated fair value	'	'
Long-term debt (including current maturities)	1,262	1,089
Instruments with off-balance sheet risk:	'	'
Asset derivative contracts	$0	$0

Fair_Value_of_Long_Term_Debt_A

Fair Value of Long Term Debt - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long term debt	$780	$790
Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long term debt	428	287
Level 3 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long term debt	$54	$10

Foreign_Exchange_Forward_Contr

Foreign Exchange Forward Contracts Fair Value on Gross Basis (Detail) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]	'	'
Fair Value of Derivative Instruments, Asset Derivatives	$0	$0
Fair Value of Derivative Instruments, Liability Derivatives	0	0
Fair Value of Derivative Instruments	$0	$0
Term Of Foreign Currency Forward Purchase And Sales Contacts (less than one year)	'1 year	'

Fair_Value_of_Financial_Assets

Fair Value of Financial Assets on Recurring Basis (Detail) (Level 2 [Member], Foreign Exchange Forward Contracts [Member], Fair Value, Measurements, Recurring [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Level 2 [Member] | Foreign Exchange Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Financial Assets:	'	'
Foreign exchange forward contracts	$0	$0

Summarization_for_Foreign_Curr

Summarization for Foreign Currency Forward Purchase and Sale Contracts (Detail) (Foreign Exchange Forward Contracts [Member])

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

In Millions, unless otherwise specified

Long [Member]

Long [Member]

Long [Member]

Long [Member]

Long [Member]

Long [Member]

Long [Member]

Long [Member]

Short [Member]

Short [Member]

Short [Member]

Short [Member]

Short [Member]

Short [Member]

Short [Member]

Australian dollars [Member]

British pounds [Member]

European euro [Member]

South African Rand [Member]

Japanese yen [Member]

Polish Zloty [Member]

U.S. dollars [Member]

Other Currency [Member]

Australian dollars [Member]

British pounds [Member]

Canada, Dollars

European euro [Member]

South African Rand [Member]

Japanese yen [Member]

U.S. dollars [Member]

AUD

GBP (£)

EUR (€)

ZAR

JPY (¥)

PLN

USD ($)

USD ($)

GBP (£)

GBP (£)

CAD

EUR (€)

EUR (€)

JPY (¥)

USD ($)

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional Amount in Foreign Currency

2

£ 34

€ 2

127

¥ 271

25

$29

$1

£ (1)

£ (2)

-18

-€ 9

-€ 3

¥ (531)

($74)

Financial_Instruments_Addition

Financial Instruments - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
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	$83	'
Negotiable Financial Instruments Collected Before Maturity Date And Sold At Discount	5	'
Financial Instruments Not Redeemed And Used For Vendor Payment	29	13
Financial Instruments Received From One Customer Not Redeemed	17	12
Financial Instruments Received Classified As Other Current Assets	17	12
Extended Payment Term	14	'
Restricted cash	5	5
TMEL and Walker Plans [Member]	'	'
Financial Instruments [Line Items]	'	'
Number of performance guarantee agreements	2	'
Number of group benefit plans under the agreement	2	'
Maximum amount payable for pension performance guarantees	27	'
Percentage of liability considered to determine maximum amount payable for pension performance guarantees	105.00%	'
Percentage of the pension obligation recognized for participating employers	100.00%	'
Pension obligation of participating employers recognized on the balance sheet	7	10
TMEL and Futaba [Member]	'	'
Financial Instruments [Line Items]	'	'
Maximum amount reimbursable under indemnity agreement	5	'
Australia [Member]	'	'
Financial Instruments [Line Items]	'	'
Number of subsidiaries	2	'
Restricted cash	4	'
CHINA	'	'
Financial Instruments [Line Items]	'	'
Restricted cash	$1	'

LongTerm_Debt_and_Financing_Ar2

Long-Term Debt and Financing Arrangements - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Mar. 22, 2012
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Maximum percentage of stock of certain first-tier foreign subsidiaries pledged to secure senior credit facility	66.00%	'
Interest coverage ratio (minimum) effective from March 31, 2014 through March 22, 2017	2.75	'
Leverage Ratio Required (Maximum) for future quarters	3.5	'
Tranche Term Facility [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Line of Credit Facility, Maximum Borrowing Capacity	$219	$250
Line of Credit Facility, Maturity Date	22-Mar-17	'
Tranche Term Facility [Member] | June 30, 2014 through March 31, 2015 [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Repayment of term loan	6.3	'
Tranche Term Facility [Member] | June 30, 2015 through March 31, 2016 [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Repayment of term loan	9.4	'
Tranche Term Facility [Member] | June 30, 2016 through December 31, 2016 [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Repayment of term loan	12.5	'
Tranche Term Facility [Member] | Due on March 22, 2017 [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Repayment of term loan	125	'
Revolving Credit Facility (Member)	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Line of Credit Facility, Maximum Borrowing Capacity	850	'
Line of Credit Facility, Maturity Date	22-Mar-17	'
Unused Borrowing Capacity	560	'
Outstanding borrowings in senior secured credit facility	208	'
Letter of Credit (Member)	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Line of credit facility letters of credit outstanding	82	'
7 3/4 percent senior notes due August 15, 2018 [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Senior notes rate	7.75%	'
Unsecured debt	225	'
6 7/8 percent senior notes due Dec 15, 2020 [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Senior notes rate	6.88%	'
Unsecured debt	500	'
Other Debt [Member]	'	'
Long Term Debt And Other Financing Arrangement [Line Items]	'	'
Unsecured debt	$145	'

Financial_Ratios_under_Senior_

Financial Ratios under Senior Credit Facility (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014
Required [Member]	'	'
Financial Ratios Under Senior Credit Facility [Line Items]	'	'
Leverage Ratio (maximum)	3.5	3.5
Interest Coverage Ratio (minimum)	2.75	2.75
Actual [Member]	'	'
Financial Ratios Under Senior Credit Facility [Line Items]	'	'
Leverage Ratio (maximum)	1.57	1.63
Interest Coverage Ratio (minimum)	10.62	10.39
Tranche Term Facility [Member]	'	'
Financial Ratios Under Senior Credit Facility [Line Items]	'	'
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	28	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Disclosure Income Taxes Additional Information [Abstract]	'	'	'	'
Income tax expense (benefit)	$46	$47	$86	$59
Tax adjustment to prior year estimates	'	'	1	'
Net tax benefits related to US taxable income	'	'	'	$13

Accounts_Receivables_Additiona

Accounts Receivables - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Transfers of Servicing of Financial Assets [Line Items]	'	'	'	'	'
Number of Commercial Banks with Accounts Receivable Securitization Programs	3	'	3	'	'
Term of Commitments	'	'	'1 year	'	'
Term Of Commitments, Cancellation Period	'	'	'90 days	'	'
Term Of Commitments, Financial Institution Cancellation Period	'	'	'15 days	'	'
North America [Member]	'	'	'	'	'
Transfers of Servicing of Financial Assets [Line Items]	'	'	'	'	'
North American program maximum facility size	$110	'	$110	'	'
Additional Financing from second priority facility	40	'	40	'	'
Outstanding third party investments in securitized accounts receivable bank program	0	'	0	'	10
Securitization Interest Expense	1	1	1	1	'
Europe [Member]	'	'	'	'	'
Transfers of Servicing of Financial Assets [Line Items]	'	'	'	'	'
Outstanding third party investments in securitized accounts receivable bank program	186	'	186	'	134
Loss on sale of trade accounts receivable	$1	$1	$2	$2	'
Financing Cost Related To Sale Of Securitized Receivables	'	'	2.00%	3.00%	'

Restructuring_and_Other_Charge2

Restructuring and Other Charges - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	$10	$7	'	$20	$11	$78
Restructuring and related cost allowed to be excluded from the calculation of financial covenant ratios	'	'	'	80	'	'
Asset Impairment Charges	'	'	7	'	'	'
Non- cash charges	'	'	'	1	'	3
Other Expense [Member]	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	1	'	'	1	'	'
Cost of Sales [Member]	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	5	3	'	15	7	70
Noncash asset write downs	'	4	'	'	'	'
Selling, General and Administrative Expenses [Member]	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	3	'	'	3	4	6
Engineering Expense [Member]	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	1	'	'	1	'	'
Europe [Member]	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	4	'	'	14	'	69
Expenses	3	'	'	5	'	60
Other Expense [Member] | Europe [Member]	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	1	'	'	'	'	'
Engineering Expense [Member] | Europe [Member]	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Restructuring cost	$1	'	'	'	'	'

Roll_Forward_of_Restructuring_

Roll Forward of Restructuring Reserve (Detail) (Severance [Member], USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
Severance [Member]	'
Restructuring Reserve [Roll Forward]	'
Restructuring Reserve	$44
Expenses	19
Cash Payments	-19
Restructuring Reserve	$44

Environmental_Matters_Litigati2

Environmental Matters, Litigation and Product Warranties - Additional Information (Detail) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
	LegalMatter
	defendent
	State
	federal_superfund_site
Environmental Matters, Litigation and Product Warranties [Line Items]	'
Number of Federal Super Fund sites	1
Environmental remediation accrual, discounted basis	$15
Portion of environmental remediation costs recorded in other current liabilities	3
Portion of environmental remediation costs recorded in deferred credits and other liabilities	12
Weighted average discount rate	2.30%
Environmental remediation accrual, undiscounted basis	18
Cost of services, environmental remediation, next twelve months	2
Cost of services, environmental remediation, year two	1
Cost of services, environmental remediation, year three	1
Cost of services, environmental remediation, year four	1
Cost of services, environmental remediation, year five	1
Cost of services, environmental remediation, thereafter	$12
Number of states for which we are subject to an audit with respect to payment of unclaimed property	11
Number of years subject to audit with respect to payment of unclaimed property	'30 years
Number of complaints filed alleging exposure to asbestos from our product categories	20,000
Current docket of active and inactive cases nationwide relating to alleged exposure to asbestos from our product categories (less than 500 cases)	500
Number of defendants in many asbestos related cases	100

Warranty_Accrual_Rollforward_D

Warranty Accrual Rollforward (Detail) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]	'	'
Beginning Balance January 1,	$24	$23
Accruals related to product warranties	12	6
Reductions for payments made	-10	-9
Ending Balance June 30,	$26	$20

Summary_of_Earnings_Per_Share_

Summary of Earnings Per Share of Common Stock (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Basic earnings per share —	'	'	'	'
Net income attributable to Tenneco Inc.	$81	$63	$127	$117
Weighted Average shares of common stock outstanding	60,736,737	60,542,361	60,631,080	60,424,540
Earnings per share of common stock	$1.34	$1.04	$2.10	$1.94
Diluted earnings per share —	'	'	'	'
Net income attributable to Tenneco Inc.	$81	$63	$127	$117
Weighted Average shares of common stock outstanding	60,736,737	60,542,361	60,631,080	60,424,540
Effect of dilutive securities:	'	'	'	'
Restricted stock	104,679	170,950	139,024	157,551
Stock options	820,480	1,010,813	813,621	950,459
Weighted Average shares of common stock outstanding including dilutive securities	61,661,896	61,724,124	61,583,725	61,532,550
Earnings per share of common stock	$1.32	$1.02	$2.06	$1.91

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'
Anti-dilutive stock options	523	830,486

Common_Stock_Additional_Inform

Common Stock - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'	'
Share-based Compensation, Effect on Earnings Per Share, Basic	$0.01	$0.02	$0.04	$0.05	'
Share-based compensation, effect on earnings per share, diluted	$0.01	$20,000	$40,000	$50,000	'
Share based compensation	$3	$2	$8	$7	'
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	3	'	'	'	'
Weighted average grant-date fair value of options granted	'	'	$26.46	$19.84	'
Total fair value of shares vested	'	'	6	5	'
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	400,000	'	400,000	'	'
Treasury Stock, Shares, Acquired	2,844,692	'	2,844,692	'	2,844,692,000,000
Stock Option [Member]	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'	'
Unrecognized compensation costs	8	'	8	'	'
Unrecognized compensation costs, weighted average period	'	'	'1 year 4 months 24 days	'	'
Cash received from stock option exercises	'	'	1	10	'
Restricted Stock, Restricted Stock Units, Long Term Performance Units, SARs [Member]	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'	'
Unrecognized compensation costs	25	'	25	'	'
Unrecognized compensation costs, weighted average period	'	'	'2 years 0 months 0 days	'	'
Share based compensation	5	5	10	8	'
Restricted Stock [Member]	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'	'
Unrecognized compensation costs	8	'	8	'	'
Unrecognized compensation costs, weighted average period	'	'	'2 years 1 month 6 days	'	'
Total fair value of restricted shares vested	'	'	7	5	'
Selling, General and Administrative Expenses [Member] | Stock Option [Member]	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'	'
Compensation expense related to nonqualified stock options	1	1	3	3	'
UNITED STATES | Stock Option [Member]	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'	'
Cash received from stock option exercises	'	'	'	17	'
UNITED STATES | Employee Stock Option [Member]	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'	'
Cash received from stock option exercises	'	'	'	$14	'

Assumptions_Used_for_Calculati

Assumptions Used for Calculating Fair Values of Stock Option Awards (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Stock Options Granted	'	'
Weighted average grant date fair value, per share	$26.46	$19.84
Weighted average assumptions used:	'	'
Expected volatility	52.80%	66.40%
Expected lives	'5 years 0 months 0 days	'4 years 10 months 24 days
Risk-free interest rates	1.70%	0.70%
Dividend yields	0.00%	0.00%

Stock_Options_Status_and_Activ

Stock Options Status and Activity (Detail) (USD $)	3 Months Ended		6 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'	'
Outstanding, Beginning Balance	2,119,003	1,983,573	1,983,573	'
Granted	0	192,624	'	'
Canceled	'	-31,299	'	'
Forfeited	0	-300	'	'
Exercised	-32,233	-25,595	'	'
Outstanding, Ending Balance	2,086,770	2,119,003	2,086,770	1,983,573
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'	'
Outstanding, Beginning Balance	$26.10	$22.93	$22.93	'
Granted	$0	$56.23	'	'
Canceled	'	$19.78	'	'
Forfeited	$0	$22.77	'	'
Exercised	$25.49	$14.72	'	'
Outstanding, Ending Balance	$26.11	$26.10	$26.11	$22.93
Weighted Avg. Remaining Life in Years	'	'4 years 7 months 5 days	'4 years 3 months 17 days	'4 years 6 months 0 days
Aggregate Intrinsic Value, Outstanding, Beginning Balance	$67	$62	$62	'
Aggregate Intrinsic Value, Exercised	1	1	'	'
Aggregate Intrinsic Value, Outstanding, Ending Balance	$75	$67	$75	$62

Nonvested_Restricted_Shares_De

Nonvested Restricted Shares (Detail) (Restricted Stock [Member], USD $)	3 Months Ended
	Jun. 30, 2014	Mar. 31, 2014
Restricted Stock [Member]	'	'
Nonvested Restricted Shares	'	'
Nonvested, Beginning Balance	313,717	368,268
Granted	2,838	131,561
Vested	-2,286	-186,112
Forfeited	-575	0
Nonvested, Ending Balance	313,694	313,717
Weighted Avg. Grant Date Fair Value	'	'
Nonvested, Beginning Balance	$42.30	$34.90
Granted	$66.96	$54.90
Vested	$31.63	$36.57
Forfeited	$38.52	$0
Nonvested, Ending Balance	$42.60	$42.30

Components_of_Net_Periodic_Ben

Components of Net Periodic Benefit Cost (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
United States Pension Plans of US Entity, Defined Benefit [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost — benefits earned during the period	$0	$1	$0	$1
Interest cost	5	4	10	9
Expected return on plan assets	-6	-6	-12	-11
Net amortization:	'	'	'	'
Actuarial loss	2	3	4	5
Prior service cost (credit)	0	0	0	0
Net pension and postretirement costs	1	2	2	4
Foreign Pension Plans, Defined Benefit [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost — benefits earned during the period	2	3	4	5
Interest cost	4	4	9	8
Expected return on plan assets	-5	-5	-12	-10
Net amortization:	'	'	'	'
Actuarial loss	2	3	4	6
Prior service cost (credit)	0	1	1	1
Net pension and postretirement costs	3	6	6	10
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost — benefits earned during the period	0	0	0	0
Interest cost	2	2	3	3
Expected return on plan assets	0	0	0	0
Net amortization:	'	'	'	'
Actuarial loss	1	1	1	2
Prior service cost (credit)	-2	-2	-3	-3
Net pension and postretirement costs	$1	$1	$1	$2

Pension_Plans_Postretirement_a2

Pension Plans, Postretirement and Other Employee Benefits - Additional Information (Detail) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
United States Pension Plans of US Entity, Defined Benefit [Member]	'
Pension Plans, Postretirement and Other Employee Benefits [Line Items]	'
Employer contributions	$14
Foreign Pension Plans, Defined Benefit [Member]	'
Pension Plans, Postretirement and Other Employee Benefits [Line Items]	'
Employer contributions	9
Pension Plans, Defined Benefit [Member]	'
Pension Plans, Postretirement and Other Employee Benefits [Line Items]	'
Employer estimated contributions	24
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]	'
Pension Plans, Postretirement and Other Employee Benefits [Line Items]	'
Employer contributions	3
Employer estimated contributions	$5

Amounts_Recognized_for_Pension

Amounts Recognized for Pension and Postretirement Benefits in Other Comprehensive Income (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'	'	'	'
Amortization of prior service cost included in net periodic pension and postretirement cost, Before-tax amount	($2)	($1)	($2)	($2)
Amortization of actuarial loss included in net periodic pension and postretirement cost, Before-tax amount	5	7	9	13
Other comprehensive income - pension benefits, Before-tax amount	3	6	7	11
Amortization of prior service cost included in net periodic pension and postretirement cost, Tax Benefit	0	0	0	0
Amortization of actuarial loss included in net periodic pension and postretirement cost, Tax Benefit	0	0	1	-1
Other comprehensive - pension benefits, Tax Benefit	0	0	1	-1
Amortization of prior service cost included in net periodic pension and postretirement cost, Net-of-tax Amount	-2	-1	-2	-2
Amortization of actuarial loss included in net periodic pension and postretirement cost, Net-of-tax Amount	5	7	8	12
Other comprehensive income - pension benefits, Net-of-tax Amount	$3	$6	$6	$10

Segment_Information_Detail

Segment Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	$2,241	$2,067	$4,335	$3,970	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	156	141	269	234	'
Total assets	4,317	3,939	4,317	3,939	3,830
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	35	37	35	37	'
North America [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Total assets	'	682	'	682	'
Europe South America And India [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	'	281	'	'	'
Total assets	'	593	'	593	'
Asia Pacific	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	'	56	'	'	'
Total assets	'	208	'	208	'
Other Countries [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	'	0	0	0	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	'	-22	-54	-43	'
Total assets	0	0	0	0	'
Clean Air Division [Member] | North America [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	755	687	1,453	1,333	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	74	68	130	117	'
Total assets	1,238	1,099	1,238	1,099	'
Clean Air Division [Member] | Europe South America And India [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	523	516	1,029	983	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	18	18	27	29	'
Total assets	946	869	946	869	'
Clean Air Division [Member] | Asia Pacific	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	263	203	503	386	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	23	21	43	36	'
Total assets	589	451	589	451	'
Ride Performance Division [Member] | North America [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	364	324	699	631	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	48	36	78	61	'
Total assets	718	682	718	682	'
Ride Performance Division [Member] | Europe South America And India [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	280	'	'	'	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	14	'	'	'	'
Total assets	558	'	558	'	'
Ride Performance Division [Member] | Europe [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	'	'	543	533	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	'	14	30	24	'
Total assets	558	593	558	593	'
Ride Performance Division [Member] | Asia Pacific	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	56	'	108	104	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	8	6	15	10	'
Total assets	233	208	233	208	'
Intersegment Revenues [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	0	0	0	0	'
Intersegment Revenues [Member] | Reclass and Elims	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	-60	-47	-118	-100	'
Intersegment Revenues [Member] | Clean Air Division [Member] | North America [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	7	1	14	2	'
Intersegment Revenues [Member] | Clean Air Division [Member] | Europe South America And India [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	28	26	58	57	'
Intersegment Revenues [Member] | Clean Air Division [Member] | Asia Pacific	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	0	0	0	0	'
Intersegment Revenues [Member] | Ride Performance Division [Member] | North America [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	3	3	6	5	'
Intersegment Revenues [Member] | Ride Performance Division [Member] | Europe South America And India [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	11	9	21	21	'
Intersegment Revenues [Member] | Ride Performance Division [Member] | Asia Pacific	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	11	8	19	15	'
Other Segments [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	-29	'	'	'	'
Total assets	0	0	0	0	'
Other Segments [Member] | Other Countries [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	0	'	'	'	'
Other Segments [Member] | Intersegment Revenues [Member] | Other Countries [Member]	'	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'	'
Revenues from external customers	$0	$0	$0	$0	'

Segment_Information_Segment_In

Segment Information Segment Information Textuals (Details)	6 Months Ended
	Jun. 30, 2014
	operating_segment
	product_segment
	geographic_segment
Segment Reporting [Abstract]	'
Number of reportable segments	3
Number of product segments	2
Number of operating segments	6

Supplemental_Guarantor_Condens2

Supplemental Guarantor Condensed Consolidating Financial Statements - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'	'	'	'
Ownership percentage of existing and future material domestic owned subsidiaries	'	'	100.00%	'
Error Corrections and Prior Period Adjustments Restatement [Line Items]	'	'	'	'
Intercompany dividend payments and net increase (decrease) in intercompany obligations	$0	$0	$0	$0
Comprehensive income (loss) attributable to Tenneco Inc.	90	45	133	77
Missclassification Of Intercompany Dividends [Member]	'	'	'	'
Error Corrections and Prior Period Adjustments Restatement [Line Items]	'	'	'	'
Intercompany dividend payments and net increase (decrease) in intercompany obligations	'	40	'	40
Correction To Other Comprehensive Income (Loss) [Member]	'	'	'	'
Error Corrections and Prior Period Adjustments Restatement [Line Items]	'	'	'	'
Comprehensive income (loss) attributable to Tenneco Inc.	'	$18	'	$40

Statement_of_Comprehensive_Inc

Statement of Comprehensive Income (Loss) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net sales and operating revenues —	'	'	'	'
External	$2,241	$2,067	$4,335	$3,970
Affiliated companies	0	0	0	0
Net sales and operating revenues	2,241	2,067	4,335	3,970
Costs and expenses	'	'	'	'
Cost of sales (exclusive of depreciation and amortization shown below)	1,851	1,736	3,605	3,340
Engineering, research, and development	42	33	84	68
Selling, general, and administrative	139	106	271	225
Depreciation and amortization of other intangibles	52	50	103	100
Costs and expenses	2,084	1,925	4,063	3,733
Other income (expense)	'	'	'	'
Loss on sale of receivables	-1	-1	-2	-2
Other	0	0	-1	-1
Total other income (expense)	-1	-1	-3	-3
Earnings before interest expense, income taxes, and noncontrolling interests	156	141	269	234
Interest expense —	'	'	'	'
External (net of interest capitalized)	19	20	38	40
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	137	121	231	194
Income tax expense	46	47	86	59
Equity in net income (loss) from affiliated companies	0	0	0	0
Net Income (loss)	91	74	145	135
Less: Net income attributable to noncontrolling interests	10	11	18	18
Net income attributable to Tenneco Inc.	81	63	127	117
Comprehensive income (loss) attributable to Tenneco Inc.	90	45	133	77
Guarantor Subsidiaries	'	'	'	'
Net sales and operating revenues —	'	'	'	'
External	1,007	904	1,927	1,756
Affiliated companies	103	92	206	171
Net sales and operating revenues	1,110	996	2,133	1,927
Costs and expenses	'	'	'	'
Cost of sales (exclusive of depreciation and amortization shown below)	975	776	1,777	1,518
Engineering, research, and development	18	14	40	29
Selling, general, and administrative	55	45	106	98
Depreciation and amortization of other intangibles	21	19	42	38
Costs and expenses	1,069	854	1,965	1,683
Other income (expense)	'	'	'	'
Loss on sale of receivables	0	0	0	0
Other	27	34	25	33
Total other income (expense)	27	34	25	33
Earnings before interest expense, income taxes, and noncontrolling interests	68	176	193	277
Interest expense —	'	'	'	'
External (net of interest capitalized)	-1	-1	-1	-1
Affiliated companies (net of interest income)	21	18	37	36
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	48	159	157	242
Income tax expense	6	40	36	46
Equity in net income (loss) from affiliated companies	83	2	68	-3
Net Income (loss)	125	121	189	193
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Tenneco Inc.	125	121	189	193
Comprehensive income (loss) attributable to Tenneco Inc.	123	126	188	193
Non-Guarantor Subsidiaries	'	'	'	'
Net sales and operating revenues —	'	'	'	'
External	1,234	1,163	2,408	2,214
Affiliated companies	157	141	305	291
Net sales and operating revenues	1,391	1,304	2,713	2,505
Costs and expenses	'	'	'	'
Cost of sales (exclusive of depreciation and amortization shown below)	1,136	1,192	2,339	2,283
Engineering, research, and development	24	19	44	39
Selling, general, and administrative	82	60	161	124
Depreciation and amortization of other intangibles	31	31	61	62
Costs and expenses	1,273	1,302	2,605	2,508
Other income (expense)	'	'	'	'
Loss on sale of receivables	-1	-1	-2	-2
Other	-1	5	0	5
Total other income (expense)	-2	4	-2	3
Earnings before interest expense, income taxes, and noncontrolling interests	116	6	106	0
Interest expense —	'	'	'	'
External (net of interest capitalized)	1	1	1	2
Affiliated companies (net of interest income)	-21	-18	-37	-37
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	136	23	142	35
Income tax expense	40	7	50	13
Equity in net income (loss) from affiliated companies	0	0	0	0
Net Income (loss)	96	16	92	22
Less: Net income attributable to noncontrolling interests	10	11	18	18
Net income attributable to Tenneco Inc.	86	5	74	4
Comprehensive income (loss) attributable to Tenneco Inc.	97	-18	81	-36
Tenneco Inc	'	'	'	'
Net sales and operating revenues —	'	'	'	'
External	0	0	0	0
Affiliated companies	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	2	1	4	3
Depreciation and amortization of other intangibles	0	0	0	0
Costs and expenses	2	1	4	3
Other income (expense)	'	'	'	'
Loss on sale of receivables	0	0	0	0
Other	0	0	0	0
Total other income (expense)	0	0	0	0
Earnings before interest expense, income taxes, and noncontrolling interests	-2	-1	-4	-3
Interest expense —	'	'	'	'
External (net of interest capitalized)	19	20	38	39
Affiliated companies (net of interest income)	0	0	0	1
Earnings (loss) before income taxes, noncontrolling interests, and equity in net income from affiliated companies	-21	-21	-42	-43
Income tax expense	'	0	0	'
Equity in net income (loss) from affiliated companies	102	84	169	160
Net Income (loss)	81	63	127	117
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Tenneco Inc.	81	63	127	117
Comprehensive income (loss) attributable to Tenneco Inc.	90	45	133	77
Reclass & Elims	'	'	'	'
Net sales and operating revenues —	'	'	'	'
External	0	0	0	0
Affiliated companies	-260	-233	-511	-462
Net sales and operating revenues	-260	-233	-511	-462
Costs and expenses	'	'	'	'
Cost of sales (exclusive of depreciation and amortization shown below)	-260	-232	-511	-461
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
Costs and expenses	-260	-232	-511	-461
Other income (expense)	'	'	'	'
Loss on sale of receivables	0	0	0	0
Other	-26	-39	-26	-39
Total other income (expense)	-26	-39	-26	-39
Earnings before interest expense, income taxes, and noncontrolling interests	-26	-40	-26	-40
Interest expense —	'	'	'	'
External (net of interest capitalized)	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	-26	-40	-26	-40
Income tax expense	'	0	0	0
Equity in net income (loss) from affiliated companies	-185	-86	-237	-157
Net Income (loss)	-211	-126	-263	-197
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Tenneco Inc.	-211	-126	-263	-197
Comprehensive income (loss) attributable to Tenneco Inc.	($220)	($108)	($269)	($157)

Balance_Sheet_Detail

Balance Sheet (Detail) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'	'	'	'	'	'
Cash and cash equivalents	$260	$267	$275	$235	$233	$223
Restricted cash	5	'	5	'	'	'
Receivables, net	1,358	'	1,060	'	'	'
Inventories	761	'	656	'	'	'
Deferred income taxes	72	'	71	'	'	'
Prepayments and other	273	'	223	'	'	'
Total current assets	2,729	'	2,290	'	'	'
Other assets:	'	'	'	'	'	'
Investment in affiliated companies	0	'	0	'	'	'
Notes and advances receivable from affiliates	0	'	0	'	'	'
Long-term receivables, net	14	'	14	'	'	'
Goodwill	68	'	69	'	'	'
Intangibles, net	28	'	30	'	'	'
Deferred income taxes	121	'	125	'	'	'
Other	126	'	127	'	'	'
Total other assets	357	'	365	'	'	'
Plant, property, and equipment, at cost	3,617	'	3,498	'	'	'
Less — Accumulated depreciation and amortization	-2,386	'	-2,323	'	'	'
Plant, property and equipment, net	1,231	'	1,175	'	'	'
Total Assets	4,317	'	3,830	3,939	'	'
Short-term debt (including current maturities of long-term debt)	'	'	'	'	'	'
Short-term debt — non-affiliated	91	'	83	'	'	'
Short-term debt — affiliated	0	'	0	'	'	'
Trade payables	1,494	'	1,359	'	'	'
Accrued taxes	41	'	40	'	'	'
Other	383	'	356	'	'	'
Total current liabilities	2,009	'	1,838	'	'	'
Long-term debt — non-affiliated	1,206	'	1,019	'	'	'
Long-term debt — affiliated	0	'	0	'	'	'
Deferred income taxes	29	'	28	'	'	'
Postretirement benefits and other liabilities	426	'	453	'	'	'
Commitments and contingencies	'	'	'	'	'	'
Total liabilities	3,670	'	3,338	'	'	'
Redeemable noncontrolling interests	22	'	20	'	'	'
Tenneco Inc. shareholders’ equity	589	'	433	'	'	'
Noncontrolling interests	36	'	39	'	'	'
Total equity	625	'	472	380	'	'
Total liabilities, redeemable noncontrolling interests and equity	4,317	'	3,830	'	'	'
Guarantor Subsidiaries	'	'	'	'	'	'
Current assets:	'	'	'	'	'	'
Cash and cash equivalents	0	2	6	1	4	4
Restricted cash	0	'	0	'	'	'
Receivables, net	569	'	387	'	'	'
Inventories	321	'	279	'	'	'
Deferred income taxes	88	'	87	'	'	'
Prepayments and other	48	'	35	'	'	'
Total current assets	1,026	'	794	'	'	'
Other assets:	'	'	'	'	'	'
Investment in affiliated companies	998	'	944	'	'	'
Notes and advances receivable from affiliates	983	'	1,026	'	'	'
Long-term receivables, net	12	'	12	'	'	'
Goodwill	21	'	22	'	'	'
Intangibles, net	12	'	13	'	'	'
Deferred income taxes	60	'	72	'	'	'
Other	44	'	44	'	'	'
Total other assets	2,130	'	2,133	'	'	'
Plant, property, and equipment, at cost	1,202	'	1,173	'	'	'
Less — Accumulated depreciation and amortization	-826	'	-807	'	'	'
Plant, property and equipment, net	376	'	366	'	'	'
Total Assets	3,532	'	3,293	'	'	'
Short-term debt (including current maturities of long-term debt)	'	'	'	'	'	'
Short-term debt — non-affiliated	0	'	0	'	'	'
Short-term debt — affiliated	205	'	247	'	'	'
Trade payables	541	'	521	'	'	'
Accrued taxes	-12	'	9	'	'	'
Other	144	'	128	'	'	'
Total current liabilities	878	'	905	'	'	'
Long-term debt — non-affiliated	0	'	0	'	'	'
Long-term debt — affiliated	1,831	'	1,700	'	'	'
Deferred income taxes	0	'	0	'	'	'
Postretirement benefits and other liabilities	342	'	357	'	'	'
Commitments and contingencies	'	'	'	'	'	'
Total liabilities	3,051	'	2,962	'	'	'
Redeemable noncontrolling interests	0	'	0	'	'	'
Tenneco Inc. shareholders’ equity	481	'	331	'	'	'
Noncontrolling interests	0	'	0	'	'	'
Total equity	481	'	331	'	'	'
Total liabilities, redeemable noncontrolling interests and equity	3,532	'	3,293	'	'	'
Nonguarantor Subsidiaries	'	'	'	'	'	'
Current assets:	'	'	'	'	'	'
Cash and cash equivalents	260	265	269	234	229	219
Restricted cash	5	'	5	'	'	'
Receivables, net	1,505	'	1,306	'	'	'
Inventories	440	'	377	'	'	'
Deferred income taxes	0	'	0	'	'	'
Prepayments and other	225	'	188	'	'	'
Total current assets	2,435	'	2,145	'	'	'
Other assets:	'	'	'	'	'	'
Investment in affiliated companies	0	'	0	'	'	'
Notes and advances receivable from affiliates	9,010	'	7,320	'	'	'
Long-term receivables, net	2	'	2	'	'	'
Goodwill	47	'	47	'	'	'
Intangibles, net	16	'	17	'	'	'
Deferred income taxes	9	'	9	'	'	'
Other	61	'	60	'	'	'
Total other assets	9,145	'	7,455	'	'	'
Plant, property, and equipment, at cost	2,415	'	2,325	'	'	'
Less — Accumulated depreciation and amortization	-1,560	'	-1,516	'	'	'
Plant, property and equipment, net	855	'	809	'	'	'
Total Assets	12,435	'	10,409	'	'	'
Short-term debt (including current maturities of long-term debt)	'	'	'	'	'	'
Short-term debt — non-affiliated	76	'	68	'	'	'
Short-term debt — affiliated	295	'	176	'	'	'
Trade payables	1,109	'	1,011	'	'	'
Accrued taxes	25	'	31	'	'	'
Other	303	'	285	'	'	'
Total current liabilities	1,808	'	1,571	'	'	'
Long-term debt — non-affiliated	53	'	8	'	'	'
Long-term debt — affiliated	8,978	'	7,338	'	'	'
Deferred income taxes	29	'	28	'	'	'
Postretirement benefits and other liabilities	81	'	92	'	'	'
Commitments and contingencies	'	'	'	'	'	'
Total liabilities	10,949	'	9,037	'	'	'
Redeemable noncontrolling interests	22	'	20	'	'	'
Tenneco Inc. shareholders’ equity	1,428	'	1,313	'	'	'
Noncontrolling interests	36	'	39	'	'	'
Total equity	1,464	'	1,352	'	'	'
Total liabilities, redeemable noncontrolling interests and equity	12,435	'	10,409	'	'	'
Tenneco Inc	'	'	'	'	'	'
Current assets:	'	'	'	'	'	'
Cash and cash equivalents	0	0	0	0	0	0
Restricted cash	0	'	0	'	'	'
Receivables, net	0	'	16	'	'	'
Inventories	0	'	0	'	'	'
Deferred income taxes	7	'	7	'	'	'
Prepayments and other	0	'	0	'	'	'
Total current assets	7	'	23	'	'	'
Other assets:	'	'	'	'	'	'
Investment in affiliated companies	907	'	696	'	'	'
Notes and advances receivable from affiliates	4,951	'	4,826	'	'	'
Long-term receivables, net	0	'	0	'	'	'
Goodwill	0	'	0	'	'	'
Intangibles, net	0	'	0	'	'	'
Deferred income taxes	52	'	44	'	'	'
Other	21	'	23	'	'	'
Total other assets	5,931	'	5,589	'	'	'
Plant, property, and equipment, at cost	0	'	0	'	'	'
Less — Accumulated depreciation and amortization	0	'	0	'	'	'
Plant, property and equipment, net	0	'	0	'	'	'
Total Assets	5,938	'	5,612	'	'	'
Short-term debt (including current maturities of long-term debt)	'	'	'	'	'	'
Short-term debt — non-affiliated	15	'	15	'	'	'
Short-term debt — affiliated	10	'	10	'	'	'
Trade payables	0	'	0	'	'	'
Accrued taxes	28	'	0	'	'	'
Other	9	'	9	'	'	'
Total current liabilities	62	'	34	'	'	'
Long-term debt — non-affiliated	1,153	'	1,011	'	'	'
Long-term debt — affiliated	4,135	'	4,134	'	'	'
Deferred income taxes	0	'	0	'	'	'
Postretirement benefits and other liabilities	-1	'	0	'	'	'
Commitments and contingencies	'	'	'	'	'	'
Total liabilities	5,349	'	5,179	'	'	'
Redeemable noncontrolling interests	0	'	0	'	'	'
Tenneco Inc. shareholders’ equity	589	'	433	'	'	'
Noncontrolling interests	0	'	0	'	'	'
Total equity	589	'	433	'	'	'
Total liabilities, redeemable noncontrolling interests and equity	5,938	'	5,612	'	'	'
Reclass & Elims	'	'	'	'	'	'
Current assets:	'	'	'	'	'	'
Cash and cash equivalents	0	'	0	'	'	'
Restricted cash	0	'	0	'	'	'
Receivables, net	-716	'	-649	'	'	'
Inventories	0	'	0	'	'	'
Deferred income taxes	-23	'	-23	'	'	'
Prepayments and other	0	'	0	'	'	'
Total current assets	-739	'	-672	'	'	'
Other assets:	'	'	'	'	'	'
Investment in affiliated companies	-1,905	'	-1,640	'	'	'
Notes and advances receivable from affiliates	-14,944	'	-13,172	'	'	'
Long-term receivables, net	0	'	0	'	'	'
Goodwill	0	'	0	'	'	'
Intangibles, net	0	'	0	'	'	'
Deferred income taxes	0	'	0	'	'	'
Other	0	'	0	'	'	'
Total other assets	-16,849	'	-14,812	'	'	'
Plant, property, and equipment, at cost	0	'	0	'	'	'
Less — Accumulated depreciation and amortization	0	'	0	'	'	'
Plant, property and equipment, net	0	'	0	'	'	'
Total Assets	-17,588	'	-15,484	'	'	'
Short-term debt (including current maturities of long-term debt)	'	'	'	'	'	'
Short-term debt — non-affiliated	0	'	0	'	'	'
Short-term debt — affiliated	-510	'	-433	'	'	'
Trade payables	-156	'	-173	'	'	'
Accrued taxes	0	'	0	'	'	'
Other	-73	'	-66	'	'	'
Total current liabilities	-739	'	-672	'	'	'
Long-term debt — non-affiliated	0	'	0	'	'	'
Long-term debt — affiliated	-14,944	'	-13,172	'	'	'
Deferred income taxes	0	'	0	'	'	'
Postretirement benefits and other liabilities	4	'	4	'	'	'
Commitments and contingencies	'	'	'	'	'	'
Total liabilities	-15,679	'	-13,840	'	'	'
Redeemable noncontrolling interests	0	'	0	'	'	'
Tenneco Inc. shareholders’ equity	-1,909	'	-1,644	'	'	'
Noncontrolling interests	0	'	0	'	'	'
Total equity	-1,909	'	-1,644	'	'	'
Total liabilities, redeemable noncontrolling interests and equity	($17,588)	'	($15,484)	'	'	'

Statement_of_Cash_Flows_Detail

Statement of Cash Flows (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating Activities	'	'	'	'
Net cash provided (used) by operating activities	$114	$133	($26)	$41
Investing Activities	'	'	'	'
Proceeds from sale of assets	0	0	0	2
Cash payments for plant, property, and equipment	-84	-54	-167	-124
Cash payments for software related intangible assets	-2	-6	-9	-12
Changes in restricted cash	1	4	0	-5
Net cash (used) by investing activities	-85	-56	-176	-139
Financing Activities	'	'	'	'
Issuance (repurchase) of common shares	1	12	-1	13
Tax benefit from stock-based compensation	5	0	17	0
Retirement of long-term debt	-7	-3	-10	-8
Purchase of common stock under the share repurchase program	0	-2	0	-2
Issuance of long-term debt	45	0	45	0
Increase (decrease) in bank overdrafts	-5	44	-1	35
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	-30	-84	167	107
Net increase (decrease) in short-term borrowings secured by accounts receivables	-30	'	-10	'
Intercompany dividend payments and net increase (decrease) in intercompany obligations	0	0	0	0
Capital contribution from noncontrolling interest partner	4	0	5	0
Distributions to noncontrolling interest partners	-23	-23	-23	-23
Net cash provided (used) by financing activities	-40	-56	189	122
Effect of foreign exchange rate changes on cash and cash equivalents	4	-19	-2	-12
Increase (decrease) in cash and cash equivalents	-7	2	-15	12
Cash and cash equivalents, April 1 and January 1, respectively	267	233	275	223
Cash and cash equivalents, June 30 (Note)	260	235	260	235
Guarantor Subsidiaries	'	'	'	'
Operating Activities	'	'	'	'
Net cash provided (used) by operating activities	52	87	-156	-15
Investing Activities	'	'	'	'
Proceeds from sale of assets	'	1	0	1
Cash payments for plant, property, and equipment	-22	-23	-47	-55
Cash payments for software related intangible assets	-2	-6	-6	-9
Changes in restricted cash	0	0	0	0
Net cash (used) by investing activities	-24	-29	-53	-63
Financing Activities	'	'	'	'
Issuance (repurchase) of common shares	0	0	0	0
Tax benefit from stock-based compensation	0	'	0	'
Retirement of long-term debt	0	0	0	0
Purchase of common stock under the share repurchase program	'	0	'	0
Issuance of long-term debt	'	'	0	'
Increase (decrease) in bank overdrafts	0	40	0	40
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	0	0	0	0
Net increase (decrease) in short-term borrowings secured by accounts receivables	0	'	0	'
Intercompany dividend payments and net increase (decrease) in intercompany obligations	-30	-102	203	35
Capital contribution from noncontrolling interest partner	0	'	0	0
Distributions to noncontrolling interest partners	'	0	0	0
Net cash provided (used) by financing activities	-30	-62	203	75
Effect of foreign exchange rate changes on cash and cash equivalents	0	0	0	0
Increase (decrease) in cash and cash equivalents	-2	-3	-6	-3
Cash and cash equivalents, April 1 and January 1, respectively	2	4	6	4
Cash and cash equivalents, June 30 (Note)	0	1	0	1
Non-Guarantor Subsidiaries	'	'	'	'
Operating Activities	'	'	'	'
Net cash provided (used) by operating activities	80	113	170	128
Investing Activities	'	'	'	'
Proceeds from sale of assets	'	-1	0	1
Cash payments for plant, property, and equipment	-62	-31	-120	-69
Cash payments for software related intangible assets	0	0	-3	-3
Changes in restricted cash	1	4	0	-5
Net cash (used) by investing activities	-61	-28	-123	-76
Financing Activities	'	'	'	'
Issuance (repurchase) of common shares	0	0	0	0
Tax benefit from stock-based compensation	0	'	0	'
Retirement of long-term debt	0	-1	0	-1
Purchase of common stock under the share repurchase program	'	0	'	0
Issuance of long-term debt	45	'	45	'
Increase (decrease) in bank overdrafts	-5	4	-1	-5
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	-17	7	7	10
Net increase (decrease) in short-term borrowings secured by accounts receivables	0	'	0	'
Intercompany dividend payments and net increase (decrease) in intercompany obligations	-32	-48	-87	-6
Capital contribution from noncontrolling interest partner	4	'	5	0
Distributions to noncontrolling interest partners	'	-23	-23	-23
Net cash provided (used) by financing activities	-28	-61	-54	-25
Effect of foreign exchange rate changes on cash and cash equivalents	4	-19	-2	-12
Increase (decrease) in cash and cash equivalents	-5	5	-9	15
Cash and cash equivalents, April 1 and January 1, respectively	265	229	269	219
Cash and cash equivalents, June 30 (Note)	260	234	260	234
Tenneco Inc	'	'	'	'
Operating Activities	'	'	'	'
Net cash provided (used) by operating activities	8	-27	-14	-32
Investing Activities	'	'	'	'
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	0
Net cash (used) by investing activities	0	0	0	0
Financing Activities	'	'	'	'
Issuance (repurchase) of common shares	1	12	-1	13
Tax benefit from stock-based compensation	5	'	17	'
Retirement of long-term debt	-7	-2	-10	-7
Purchase of common stock under the share repurchase program	'	-2	'	-2
Issuance of long-term debt	'	'	0	'
Increase (decrease) in bank overdrafts	'	0	0	0
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	-13	-91	160	97
Net increase (decrease) in short-term borrowings secured by accounts receivables	-30	'	-10	'
Intercompany dividend payments and net increase (decrease) in intercompany obligations	36	110	-142	-69
Capital contribution from noncontrolling interest partner	0	'	0	0
Distributions to noncontrolling interest partners	'	0	'	0
Net cash provided (used) by financing activities	-8	27	14	32
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, April 1 and January 1, respectively	0	0	0	0
Cash and cash equivalents, June 30 (Note)	0	0	0	0
Reclass and Elims	'	'	'	'
Operating Activities	'	'	'	'
Net cash provided (used) by operating activities	-26	-40	-26	-40
Investing Activities	'	'	'	'
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	0
Net cash (used) by investing activities	0	0	0	0
Financing Activities	'	'	'	'
Issuance (repurchase) of common shares	0	0	0	0
Tax benefit from stock-based compensation	0	'	0	'
Retirement of long-term debt	0	0	'	0
Purchase of common stock under the share repurchase program	'	0	'	0
Issuance of long-term debt	0	'	0	'
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 and short-term borrowings secured by accounts receivables	0	0	0	0
Net increase (decrease) in short-term borrowings secured by accounts receivables	0	'	0	'
Intercompany dividend payments and net increase (decrease) in intercompany obligations	26	40	26	40
Capital contribution from noncontrolling interest partner	0	'	0	0
Distributions to noncontrolling interest partners	'	0	0	0
Net cash provided (used) by financing activities	26	40	26	40
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, April 1 and January 1, respectively	0	0	0	0
Cash and cash equivalents, June 30 (Note)	$0	$0	$0	$0