TRW Automotive (TRW) 10-K 13 Feb 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Billions, except Share data, unless otherwise specified	Dec. 31, 2014	Feb. 09, 2015	Jun. 27, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Central Index Key	1267097
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Trading Symbol	TRW
Entity Registrant Name	TRW Automotive Holdings Corp.
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding		114,972,298
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Entity Common Stock, par value			$0.01
Entity Public Float			$9.80

Consolidated_Statements_of_Ear

Consolidated Statements of Earnings (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Earnings [Abstract]
Sales	$17,539	$17,435	$16,444
Cost of sales	15,473	15,505	14,655
Gross profit	2,066	1,930	1,789
Administrative and selling expenses	669	607	594
Pension and postretirement benefit settlement and curtailment expenses	790	31	52
Restructuring charges and asset impairments	84	66	95
Transaction Costs	20	0	0
Other (income) expense - net	2	-1	-37
Operating income	501	1,227	1,085
Interest expense - net	109	132	111
Loss (gain) on retirement of debt - net	7	20	6
Equity in earnings of affiliates, net of tax	-45	-46	-40
Earnings before income taxes	430	1,121	1,008
Income tax (benefit) expense	96	114	-33
Net earnings	334	1,007	1,041
Less: Net earnings attributable to noncontrolling interest, net of tax	41	37	33
Net earnings attributable to TRW	$293	$970	$1,008
Basic earnings per share:
Earnings per share	$2.62	$8.25	$8.24
Weighted average shares outstanding	111.7	117.6	122.4
Diluted earnings per share:
Earnings per share	$2.54	$7.85	$7.83
Weighted average shares outstanding	118	124.6	129.7

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Earnings (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Consolidated Statement of Comprehensive Earnings
Net earnings	$334		$1,007		$1,041
Other Comprehensive Earnings (Losses)
Foreign currency translation	-277		-37		72
Retirement obligations, net of tax	-96	[1]	154	[1]	-260	[1]
Deferred cash flow hedges, net of tax	3	[2]	-26	[2]	58	[2]
Total other comprehensive earnings (losses)	-370		91		-130
Total comprehensive earnings (losses)	-36		1,098		911
Less: Comprehensive Earnings attributable to noncontrolling interest	30		42		38
Comprehensive earnings attributable to TRW	($66)		$1,056		$873
[1]	Tax on retirement obligations for the years ended December 31, 2014, 2013 and 2012 was $29 million, $(66) million, and $126 million, respectively.
[2]	Tax on deferred cash flow hedges for the years ended December 31, 2014, 2013 and 2012 was $6 million, $7 million, and $(19) million, respectively.

Consolidated_Statement_of_Comp1

Consolidated Statement of Comprehensive Earnings (Parenthetical) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statement of Comprehensive Earnings
Tax on retirement obligations in OCI	$29	($66)	$126
Tax on deferred cash flow hedges in OCI	$6	$7	($19)

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$1,031	$1,729
Accounts receivable - net	2,432	2,478
Inventories	972	1,019
Prepaid expenses and other current assets	187	178
Deferred income taxes	226	224
Assets held-for-sale	252	0
Total current assets	5,100	5,628
Property, plant and equipment - net	2,645	2,718
Goodwill	1,749	1,760
Intangible assets - net	291	292
Pension assets	663	1,059
Deferred income taxes	336	316
Other assets	510	479
Total assets	11,294	12,252
Current liabilities:
Short-term debt	222	159
Current portion of long-term debt	72	482
Trade accounts payable	2,423	2,597
Accrued compensation	253	285
Income taxes	11	27
Other current liabilities	1,259	1,205
Liabilities related to assets held-for-sale	104	0
Total current liabilities	4,344	4,755
Long-term debt	1,284	1,473
Postretirement benefits other than pensions	346	375
Pension benefits	774	676
Deferred income taxes	47	145
Long-term liabilities	461	432
Total liabilities	7,256	7,856
Stockholders' equity:
Capital stock	1	1
Paid-in-capital	1,829	1,715
Retained earnings	2,751	2,858
Accumulated other comprehensive earnings (losses)	-739	-380
Total TRW stockholders' equity	3,842	4,194
Noncontrolling interest	196	202
Total equity	4,038	4,396
Total liabilities and equity	$11,294	$12,252

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Activities
Net earnings	$334	$1,007	$1,041
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	444	430	409
Net pension and other postretirement benefits income and contributions	356	-244	-224
Net gains on sales of assets and divestitures	0	0	-6
Amortization of debt issuance costs	6	6	5
Net (gain) loss on retirement of debt	7	20	6
Asset impairment charges	19	9	4
Deferred income taxes	-94	-47	-204
Share-based compensation expense	36	36	21
Exchangeable bond premium amortization	7	10	7
Other - net	-27	-21	-32
Changes in assets and liabilities:
Accounts receivable - net	-148	-266	76
Inventories	-73	-42	-113
Trade accounts payable	16	153	62
Prepaid expense and other assets	-69	3	-47
Other liabilities	140	72	-49
Net cash provided by (used in) operating activities	954	1,126	956
Investing Activities
Capital expenditures, including other intangible assets	-694	-735	-623
Net proceeds from asset sales and divestitures	3	1	15
Investment in non-consolidated joint venture assets	-17
Net cash provided by (used in) investing activities	-708	-734	-608
Financing Activities
Change in short-term debt	67	90	0
Proceeds from issuance of long-term debt, net of fees	13	881	3
Fees paid to refinance credit facility	0	0	-9
Redemption of long-term debt	-501	-340	-86
Repurchase of capital stock	-400	-520	-268
Proceeds from exercise of stock options	3	30	21
Dividends paid to noncontrolling interest	-36	-31	-46
Net cash provided by (used in) financing activities	-854	110	-385
Effect of exchange rate changes on cash	-80	4	19
Change In Cash Held For Sale	-10	0	0
Increase (decrease) in cash and cash equivalents	-698	506	-18
Cash and cash equivalents at beginning of period	1,729	1,223	1,241
Cash and cash equivalents at end of period	1,031	1,729	1,223
Supplemental Cash Flow Information:
Interest paid	105	112	106
Income tax paid - net	$184	$157	$197

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Stock Including Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Parent [Member]	Noncontrolling Interest [Member]
In Millions, except Share data
Beginning balance at Dec. 31, 2011	$3,139	$1,603	$1,668	($331)	$2,940	$199
Beginning balance at Dec. 31, 2011	123,751,455
Sale of common stock under stock option plans	887,392
Issuance of common stock upon vesting of restricted stock units and exercise of stock-settled stock appreciation rights	345,691
Repurchase of common stock (shares)	-5,612,491
Net earnings	1,041		1,008		1,008	33
Total other comprehensive earnings (losses)	-130			-135	-135	5
Cash dividends paid to noncontrolling interest	-46					-46
Sale of common stock under stock option plans	21	21			21
Issuance of common stock upon vesting of restricted stock units and exercise of stock-settled stock appreciation rights	-10	-10			-10
Share-based compensation expense	21	21			21
Excess tax benefits on share-based compensation	1	1			1
Repurchase of common stock (value)	-268		-268		-268
Ending balance at Dec. 31, 2012	3,769	1,636	2,408	-466	3,578	191
Ending balance at Dec. 31, 2012	119,372,047
Sale of common stock under stock option plans	1,269,207
Issuance of common stock upon vesting of restricted stock units and exercise of stock-settled stock appreciation rights	324,947
Repurchase of common stock (shares)	-7,547,751
Conversion of 3.5% exchangeable notes (shares)	880,350
Net earnings	1,007		970		970	37
Total other comprehensive earnings (losses)	91			86	86	5
Cash dividends paid to noncontrolling interest	-31					-31
Sale of common stock under stock option plans	30	30			30
Issuance of common stock upon vesting of restricted stock units and exercise of stock-settled stock appreciation rights	-13	-13			-13
Share-based compensation expense	36	36			36
Excess tax benefits on share-based compensation	1	1			1
Repurchase of common stock (value)	-520		-520		-520
Conversion of 3.5% exchangeable notes (value)	26	26			26
Ending balance at Dec. 31, 2013	4,396	1,716	2,858	-380	4,194	202
Ending balance at Dec. 31, 2013	114,298,800
Sale of common stock under stock option plans	219,934
Issuance of common stock upon vesting of restricted stock units and exercise of stock-settled stock appreciation rights	632,467
Repurchase of common stock (shares)	-4,541,201
Conversion of 3.5% exchangeable notes (shares)	3,937,079
Net earnings	334		293		293	41
Total other comprehensive earnings (losses)	-370			-359	-359	-11
Cash dividends paid to noncontrolling interest	-36					-36
Sale of common stock under stock option plans	3	3			3
Issuance of common stock upon vesting of restricted stock units and exercise of stock-settled stock appreciation rights	-44	-44			-44
Share-based compensation expense	36	36			36
Excess tax benefits on share-based compensation	2	2			2
Repurchase of common stock (value)	-400		-400		-400
Conversion of 3.5% exchangeable notes (value)	117	117			117
Ending balance at Dec. 31, 2014	$4,038	$1,830	$2,751	($739)	$3,842	$196
Ending balance at Dec. 31, 2014	114,547,079

Description_of_Business

Description of Business	12 Months Ended
	Dec. 31, 2014
Description Of Business [Abstract]
Description of Business	1. Description of Business
	TRW Automotive Holdings Corp. (together with its subsidiaries, referred to herein as the “Company”) is among the world's largest and most diversified suppliers of automotive systems, modules and components to global automotive original equipment manufacturers (“OEMs”) and related aftermarkets. The Company conducts substantially all of its operations through subsidiaries. These operations primarily encompass the design, manufacture and sale of active and passive safety related products and systems. Active safety related products and systems principally refer to vehicle dynamic controls (primarily braking and steering), and passive safety related products and systems principally refer to occupant restraints (primarily airbags and seat belts) and safety electronics (primarily electronic control units and crash and occupant weight sensors). The Company is primarily a “Tier 1” supplier (a supplier that sells to OEMs). In 2014, approximately 82% of the Company's end-customer sales were to major OEMs.

Merger

Merger	12 Months Ended
	Dec. 31, 2014
Merger [Abstract]
Merger [Text Block]	2. Merger
	On September 15, 2014, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with ZF Friedrichshafen AG, a stock corporation organized and existing under the laws of the Federal Republic of Germany (“ZF”), and MSNA, Inc., a Delaware corporation (“Merger Sub”) and a wholly owned subsidiary of ZF held directly by ZF North America, Inc. (“ZNA”), pursuant to which Merger Sub will be merged with and into the Company (the “ZF Merger”) with the Company surviving the ZF Merger as an indirect wholly owned subsidiary of ZF. At a special stockholders meeting held on November 19, 2014, the Company's stockholders adopted the Merger Agreement.
	At the effective time of the ZF Merger, each share of the Company's common stock issued and outstanding (other than any shares of Company common stock held by ZF, ZNA, Merger Sub or any other wholly owned subsidiary of ZF, treasury shares held by the Company and shares owned by stockholders who have properly made and not withdrawn a demand for appraisal rights under Delaware law) will be converted into the right to receive $105.60 in cash, without interest (the “Merger Consideration”). In addition, at the effective time of the ZF Merger, (i) all then-outstanding Company stock options, restricted stock units (“RSUs”), phantom stock units (“PSUs”) and performance share units (“Performance Units,” which will vest at the “maximum level” of performance), whether vested or unvested, will be converted into the right to receive the Merger Consideration, less the exercise price of such awards, if any, and (ii) all then-outstanding Company stock-settled stock appreciation rights (“SSARs”), whether vested or unvested, will be converted into the right to receive an amount in cash equal to the excess of the lesser of the Merger Consideration and the “maximum value” of such stock appreciation right over the fair market value per share at the relevant grant date. The consummation of the ZF Merger is subject to the receipt of antitrust approvals in the United States and certain other jurisdictions and other customary closing conditions. The transaction is expected to close in the first half of 2015. If completed, the ZF Merger will result in the Company becoming a wholly owned subsidiary of ZF and its shares will no longer be listed on any public market.

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Basis of Presentation and Summary of Significant Acconting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	3. Basis of Presentation and Summary of Significant Accounting Policies
	Basis of Presentation
	The consolidated financial statements are prepared in accordance with United States generally accepted accounting principles (“GAAP”).
	Summary of Significant Accounting Policies
	Principles of Consolidation. The consolidated financial statements reflect the financial position and operating results of the Company, including wholly owned subsidiaries and investees that the Company controls. Investments in entities that the Company does not control, but has the ability to exercise significant influence over operating and financial policies, are accounted for under the equity method. Investments in entities in which the Company does not have the ability to exercise significant influence are accounted for under the cost method. Noncontrolling interests in consolidated subsidiaries in the consolidated balance sheets represent minority stockholders' proportionate share of the equity in such subsidiaries. All intercompany transactions and balances are eliminated in consolidation.
	Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities and reported amounts of revenues and expenses in the consolidated statements of earnings. Considerable judgment is often involved in making these determinations; the use of different assumptions could result in significantly different results. Management believes its assumptions and estimates are reasonable and appropriate. However, actual results could differ from those estimates.
	Foreign Currency. The financial statements of foreign subsidiaries are translated to U.S. dollars at end-of-period exchange rates for assets and liabilities and at an average exchange rate for each period for revenues and expenses. Translation adjustments for those subsidiaries whose local currency is their functional currency are recorded as a component of accumulated other comprehensive earnings (losses) in stockholders' equity. Transaction gains and losses arising from fluctuations in foreign currency exchange rates on transactions denominated in currencies other than the functional currency are recognized in earnings as incurred, except for those transactions which hedge purchase commitments and for those intercompany balances which are designated as being of a long-term investment nature.
	Revenue Recognition. Sales are recognized when there is persuasive evidence of a sales agreement, the delivery of goods has occurred, the sales price is fixed or determinable and collection of related billings is reasonably assured. Sales are recorded upon shipment of product to customers and transfer of title and risk of loss under standard commercial terms (typically F.O.B. shipping point). In those limited instances where other terms are negotiated and agreed, revenue is recorded when title and risk of loss are transferred to the customer.
	Earnings per Share. Basic earnings per share are calculated by dividing net earnings by the weighted average shares outstanding during the period. Diluted earnings per share reflect the weighted average impact of all potentially dilutive securities from the date of issuance, including stock options, RSUs, SSARs and Performance Units. Further, if the inclusion of shares potentially issuable for the Company's 3.50% exchangeable senior unsecured notes (see Note 13) is more dilutive than the inclusion of the interest expense for those exchangeable notes, the Company utilizes the “if-converted” method to calculate diluted earnings per share. Under the if-converted method, the Company adjusts net earnings to add back interest expense and amortization of the discount recognized on the exchangeable notes and includes the number of shares potentially issuable related to the exchangeable notes in the weighted average shares outstanding.
	If the average market price of the Company's common stock exceeds the exercise price of stock options outstanding or the grant date fair market value per share of the Company's stock for SSARs, the treasury stock method is used to determine the incremental number of shares to be included in the diluted earnings per share computation.
	Net earnings attributable to TRW and the weighted average shares outstanding used in calculating basic and diluted earnings per share were:
				Years Ended December 31,
				2014			2013				2012
				(In millions, except per share amounts)
		Net earnings attributable to TRW		$	293		$	970		$	1,008
		Interest expense on exchangeable notes, net of tax			3			4			4
		Amortization of discount on exchangeable notes, net of tax			4			4			4
		Net earnings attributable to TRW for purposes of calculating diluted earnings per share		$	300		$	978		$	1,016
		Basic:
			Weighted average shares outstanding		111.7			117.6			122.4
			Basic earnings per share	$	2.62		$	8.25		$	8.24
		Diluted:
			Weighted average shares outstanding		111.7			117.6			122.4
			Effect of dilutive stock options, RSUs and SSARs		1.6			1.3			1.4
			Shares applicable to exchangeable notes		4.7			5.7			5.9
			Diluted weighted average shares outstanding		118			124.6			129.7
			Diluted earnings per share	$	2.54		$	7.85		$	7.83
	For the years ended December 31, 2014, 2013 and 2012, the number of securities excluded from the calculation of diluted earnings per share because the inclusion of such securities in the calculation would have been anti-dilutive was approximately 0.4 million, 0.8 million, and 2.1 million, respectively.
	Cash and Cash Equivalents. Cash and cash equivalents include all highly liquid investments with remaining maturity dates of three months or less at time of purchase.
	Accounts Receivable. Receivables are stated at amounts estimated by management to be the net realizable value. An allowance for doubtful accounts is recorded when it is probable amounts will not be collected based on specific identification of customer circumstances or age of the receivable. The allowance for doubtful accounts was $26 million and $29 million as of December 31, 2014 and 2013, respectively. Accounts receivable are written off when it becomes apparent such amounts will not be collected. Collateral is not typically required, nor is interest charged on accounts receivable balances.
	Inventories. Inventories are stated at the lower of cost or market, with cost determined by the first-in, first-out (FIFO) method. Cost includes the cost of materials, direct labor, in-bound freight and the applicable share of manufacturing overhead.
	Property, Plant and Equipment. Property, plant and equipment are stated at cost less accumulated depreciation. Generally, estimated useful lives are as follows:
				Estimated
				Useful Lives
	Buildings			30 to 40 years
	Machinery and equipment			5 to 10 years
	Computers and capitalized software			3 to 5 years
	Depreciation is computed over the assets' estimated useful lives, using the straight-line method for the majority of depreciable assets. Amortization expense for assets held under capital leases is included in depreciation expense.
	Product Tooling. Product tooling is tooling that is limited to the manufacture of a specific part or parts of the same basic design. Product tooling includes dies, patterns, molds and jigs. Customer-owned tooling for which reimbursement was contractually guaranteed by the customer is classified in other assets on the consolidated balance sheets. When contractually guaranteed charges are approved for billing to the customer, such charges are reclassified into accounts receivable. Tooling owned by the Company is capitalized as property, plant and equipment, and amortized as cost of sales over its estimated economic life, not to exceed five years.
	Pre-production Costs. Pre-production engineering and research and development costs for which the customer does not contractually guarantee reimbursement are expensed as incurred.
	Goodwill and Other Intangible Assets. The Company performs either a quantitative or qualitative assessment of goodwill for impairment on an annual basis or more frequently if an event occurs or circumstances indicate the carrying amount may be impaired. Goodwill impairment testing is performed at the reporting unit level. To quantitatively test goodwill for impairment, the fair value of each reporting unit is determined and compared to the carrying value. If the carrying value exceeds the fair value, then impairment may exist and further evaluation is required. The qualitative assessment considers several factors at the reporting unit level including the excess of fair value over carrying value as of the last quantitative impairment test, the length of time since the last fair value measurement, the current carrying value, market and industry metrics, actual performance compared to forecasted performance, and our current outlook on the business. If the qualitative assessment indicates it is more likely than not that goodwill is impaired, the reporting unit is quantitatively tested for impairment.
	Other indefinite-lived intangible assets are subject to impairment analysis annually. Indefinite-lived intangible assets are tested for impairment by comparing the fair value to the carrying value. If the carrying value exceeds the fair value, the asset is adjusted to fair value. Definite-lived intangible assets are amortized over their estimated useful lives, and tested for impairment in accordance with the methodology discussed in “Asset Impairment Losses.”
	Asset Impairment Losses. Asset impairment losses are recorded on long-lived assets and definite-lived intangible assets when events and circumstances indicate that such assets may be impaired and the projected undiscounted net cash flows to be generated by those assets are less than their carrying amounts. If estimated future undiscounted cash flows are not sufficient to recover the carrying value of the assets, the assets are adjusted to their fair values. Fair value is determined using appraisals or discounted cash flow calculations.
	Environmental Costs. Costs related to environmental assessments and remediation efforts at current operating facilities, previously owned or operated facilities, and U.S. Environmental Protection Agency Superfund or other waste site locations are accrued when it is probable that a liability has been incurred and the amount of that liability can be reasonably estimated. Estimated costs are recorded at undiscounted amounts, based on experience and assessments, and are regularly evaluated. The liabilities are recorded in other current liabilities and long-term liabilities in the consolidated balance sheets.
	Debt Issuance Costs. The costs related to the issuance of long-term debt are deferred and amortized into interest expense over the life of each respective debt issuance. Deferred amounts associated with debt extinguished prior to maturity are expensed upon extinguishment as a loss on retirement of debt.
	Warranties. Product warranty liabilities are recorded based upon management estimates including such factors as the written agreement with the customer, the length of the warranty period, the historical performance of the product and likely changes in performance of newer products and the mix and volume of products sold. Product warranty liabilities are reviewed on a regular basis and adjusted to reflect actual experience.
		The following table presents the movement in the product warranty liability for the periods indicated:
				Years Ended December 31,
				2014			2013
				(Dollars in millions)
		Beginning balance		$	152		$	140
		Current period accruals, net of changes in estimates			53			58
		Liabilities held-for-sale			-2			-
		Used for purposes intended			-40			-47
		Effects of foreign currency translation			-9			1
		Ending balance		$	154		$	152
	Product Recall. Recall costs typically include the cost of the product being replaced, customer cost of the recall and labor to remove and replace the defective part.  Recall costs are recorded based on management estimates developed utilizing actuarially established loss projections based on historical claims data. Based on this actuarial estimation methodology, the Company accrues for expected but unannounced recalls when revenues are recognized upon the shipment of product. In addition, as recalls are announced, the Company reviews the actuarial estimation methodology and makes the appropriate adjustments to the accrual, if necessary.
	Research and Development. Research and development programs include research and development for commercial products. Costs for such programs are expensed as incurred. Any reimbursements received from customers are netted against such expenses. Research and development expenses were $230 million, $193 million, and $164 million for the years ended December 31, 2014, 2013, and 2012, respectively.
	Shipping and Handling. Shipping costs include payments to third-party shippers to move products to customers. Handling costs include costs from the point the products were removed from finished goods inventory to when provided to the shipper. Shipping and handling costs are expensed as incurred as cost of sales.
	Income Taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is recognized to reduce the deferred tax assets to the amount management believes is more likely than not to be realized.
	Financial Instruments. Gains or losses on derivative instruments that have been designated and qualify as hedges of the exposure to changes in the fair value of an asset or a liability, as well as the offsetting gain or loss on the hedged item, are recognized in net earnings during the period of the change in fair values. For derivative instruments that have been designated and qualify as hedges of the exposure to variability in expected future cash flows, the gain or loss on the derivative is initially reported as a component of other comprehensive earnings and reclassified to the consolidated statements of earnings when the underlying hedged transaction affects net earnings. Any gain or loss on the derivative in excess of the cumulative change in the present value of future cash flows of the hedged item is recognized in net earnings during the period of change. Derivatives not designated as hedges are adjusted to fair value through net earnings.
	Share-based Compensation. The Company recognizes compensation expense related to Performance Units subject to cliff vesting and time-vested stock options, SSARs, and RSUs subject to graded vesting using the straight-line method over the applicable service period. Share-based awards that are settled in cash are subject to liability accounting. Accordingly, the fair value for such awards is calculated on a quarterly basis, and the liability is adjusted and expense is recognized, based on changes to the percentage of time vested.
	Accumulated Other Comprehensive Earnings (Losses). The following table presents changes in accumulated other comprehensive earnings (losses) attributable to TRW by component (excluding noncontrolling interest):
						Foreign Currency Translation			Retirement Obligations			Deferred Cash Flow Hedges		Total
					(Dollars in millions)
For the year ended December 31, 2014:
Beginning balance attributable to TRW, net of tax					$	41		$	-405		$	-16	$	-380
		Other comprehensive earnings (losses) before reclassifications, net of tax				-266			-96			-1		-363
		Amounts reclassified from accumulated other comprehensive earnings (losses), net of tax				-			-(a)			4		4
Other comprehensive earnings (losses), net of tax						-266			-96			3		-359
Ending balance attributable to TRW, net of tax					$	-225		$	-501		$	-13	$	-739
For the year ended December 31, 2013:
Beginning balance attributable to TRW, net of tax					$	83		$	-559		$	10	$	-466
		Other comprehensive earnings (losses) before reclassifications, net of tax				-42			134			-25		67
		Amounts reclassified from accumulated other comprehensive earnings (losses), net of tax				-			20(b)			-1		19
Other comprehensive earnings (losses), net of tax						-42			154			-26		86
Ending balance attributable to TRW, net of tax					$	41		$	-405		$	-16	$	-380
(a)		Includes actuarial gains of $12 million, reduced by prior service cost of $12 million, net of de minimis tax.
(b)		Includes actuarial gains of $46 million, reduced by prior service cost of $17 million, net of tax of $9 million.
Recently Adopted or Issued Accounting Pronouncements. In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (''ASU'') No. 2014-08, ''Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity,” which changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. Under the new guidance, discontinued operations and assets held for sale represent a strategic shift that has or will have a major effect on an entity's operations and financial results. The Company adopted this guidance during the second quarter of 2014 and applied it prospectively to new disposals and new classifications of disposal groups as held for sale. The adoption of this guidance had no impact on the Company's financial statements.
In May 2014, the FASB issued ASU No. 2014-09, ''Revenue from Contracts with Customers (Topic 606),'' which provides a single revenue recognition model intended to improve comparability over a range of industries, companies and geographical boundaries and is intended to enhance disclosures. The standard is effective retrospectively for fiscal years (and interim reporting periods within those years) beginning after December 15, 2016. Early adoption is not permitted. The Company continues to assess the potential impact on its operations and financial statements.

Assets_Held_for_Sale

Assets Held for Sale	12 Months Ended
	Dec. 31, 2014
Assets Held for Sale [Abstract]
Assets Held for Sale [Text Block]	4. Assets Held-For-Sale
	On September 10, 2014, the Company entered into a definitive agreement to divest its engine valve business for a purchase price of $385 million in cash, which is subject to adjustment in accordance with the agreement. On February 6, 2015, the Company closed the sale of its wholly-owned engine valve subsidiaries which represented the material portion of the business to be divested. The closing did not include the transfer of several of the Company's joint ventures involved in the business. The engine valve business is reported within the Automotive Components segment (see Note 20).
	This divestiture qualified for held-for-sale accounting treatment, and as such, the assets and liabilities associated with the transaction are separately classified as held-for-sale in the consolidated balance sheet as of December 31, 2014 and depreciation of long-lived assets has ceased. The divestiture did not meet the criteria for presentation as a discontinued operation.
	The major classes of assets and liabilities held-for-sale were as follows:
					As of
					31-Dec-14
					(Dollars in millions)
		Cash			$	10
		Accounts receivable — net				23
		Inventories				44
		Prepaid expenses and other current assets				6
		Property, plant and equipment — net				158
		Other assets				11
			Total assets held-for-sale		$	252
		Trade accounts payable			$	24
		Accrued compensation				15
		Other current liabilities				24
		Pension and defined contribution benefits				41
			Total liabilities related to assets held-for-sale		$	104
	Earnings before income taxes for the engine valve business were as follows:
				Years Ended December 31,
				2014			2013		2012
				(Dollars in millions)
	Earnings before income taxes			$	47		$	39	$	42
	Less: Earnings attributable to noncontrolling interest				4			5		3
		Earnings before income taxes attributable to TRW		$	43		$	34	$	39

Inventories

Inventories	12 Months Ended
	Dec. 31, 2014
Inventories [Abstract]
Inventories	5. Inventories
		The major classes of inventory are as follows:
				As of December 31,
				2014		2013
				(Dollars in millions)
		Finished products and work in process		$	470	$	499
		Raw materials and supplies			502		520
			Total inventories	$	972	$	1,019

Investment_in_Joint_Venture_Af

Investment in Joint Venture Affiliate	12 Months Ended
	Dec. 31, 2014
Investment in Joint Venture Affiliates [Abstract]
Investment in Joint Venture Affiliates [Text Block]	Investment in Joint Venture Affiliate
	During 2014, the Company made equity and working capital contributions of $17 million in a newly-formed joint venture of which the Company owns a 30% share.  This joint venture will construct and operate a casting foundry in order to supply castings to the Company's North American Braking operations through a long-term supply arrangement, which is deemed to contain an embedded lease arrangement. For accounting purposes only, the Company is deemed to be the owner of the casting foundry during the construction period. Therefore, the Company recorded $46 million as construction-in-process and $32 million in long-term liabilities. The liability does not represent a legal obligation to pay cash.

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant And Equipment [Text Block]	7. Property, Plant and Equipment
		The major classes of property, plant and equipment are as follows:
				As of December 31,
				2014		2013
				(Dollars in millions)
		Property, plant and equipment:
			Land and improvements	$	174	$	213
			Buildings		752		831
			Machinery and equipment		5,682		5,985
			Computers and capitalized software		102		109
					6,710		7,138
		Accumulated depreciation and amortization:
			Land and improvements		-27		-33
			Buildings		-377		-416
			Machinery and equipment		-3,583		-3,879
			Computers and capitalized software		-78		-92
					-4,065		-4,420
		Total property, plant and equipment - net		$	2,645	$	2,718
	Depreciation expense was $440 million, $416 million, and $397 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets [Abstract]
Goodwill and Intangible Assets	8. Goodwill and Intangible Assets
	Goodwill
	The changes in goodwill are as follows:
						Occupant
			Chassis			Safety						Automotive
			Systems			Systems			Electronics			Components
			Segment			Segment			Segment			Segment			Total
			(Dollars in millions)
	Balance as of December 31, 2012		$	796		$	537		$	423		$	-		$	1,756
	Allocation of goodwill due to change in segment reporting			275			-			-275			-			-
	Effects of foreign currency translation			-			4			-			-			4
	Balance as of December 31, 2013			1,071			541			148			-			1,760
	Effects of foreign currency translation			-1			-10			-			-			-11
	Balance as of December 31, 2014		$	1,070		$	531		$	148		$	-		$	1,749
	Annual Assessment. The Company performed its annual assessment of goodwill for its Chassis Systems, Occupant Safety Systems and Electronics segments as of October 31, 2014, 2013 and 2012. In 2014 and 2012, the Company performed a qualitative assessment of goodwill, and concluded that it is more likely than not that each reporting unit's fair value exceeded its carrying value, thus further impairment testing was not necessary. In 2013, the Company performed a quantitative impairment analysis of goodwill, which indicated that the estimated fair value of each reporting unit substantially exceeded its corresponding carrying amount, and as such, no reporting unit was at risk for impairment.
	Intangible assets
		The following table reflects intangible assets and related accumulated amortization:
				As of December 31,
				2014									2013
				Gross						Net			Gross					Net
				Carrying			Accumulated			Carrying			Carrying			Accumulated		Carrying
				Amount			Amortization			Amount			Amount			Amortization		Amount
					(Dollars in millions)
	Definite-lived intangible assets:
		Customer relationships		$	67		$	-67		$	-		$	67		$	-67	$	-
		Developed technology and other intangible assets			120			-93			27			119			-91		28
	Total				187		$	-160			27			186		$	-158		28
	Indefinite-lived intangible assets:
		Trademarks			264						264			264					264
	Total			$	451					$	291		$	450				$	292
	Amortization of intangible assets was $4 million, $14 million, and $12 million for the years ended 2014, 2013, and 2012, respectively. The Company performed its annual impairment analysis for its indefinite-lived trademarks as of October 31, 2014, 2013 and 2012 using a quantitative assessment, and concluded that no impairment existed as of the testing dates.
	Customer relationships and developed technology have been fully amortized. The weighted average amortization periods for other intangible assets subject to amortization are as follows:
				Weighted Average
				Amortization Period
		Other intangible assets		9 years
	The Company expects that ongoing amortization expense for other intangibles will approximate the following:
				(Dollars in millions)
		Fiscal year 2015		$	3
		Fiscal year 2016			1
		2017 and beyond			23
	The expected amortization expense for 2017 and beyond primarily relates to land use rights

Other_Income_Expense_Net

Other (Income) Expense - Net	12 Months Ended
	Dec. 31, 2014
Other Expense (Income) - Net [Abstract]
Other (Income) Expense - Net	9. Other Expense (Income) - Net
		The following table provides details of other expense (income) - net:
				Years Ended December 31,
				2014		2013		2012
				(Dollars in millions)
		Net provision for bad debts		$	4	$	4	$	-1
		Net gains on sales of assets and divestitures			-		-		-6
		Foreign currency exchange losses			8		17		2
		Royalty and grant income			-22		-19		-18
		Miscellaneous other expense (income)			12		-3		-14
			Other expense (income) - net	$	2	$	-1	$	-37

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes
		Income tax expense (benefit) for each of the periods presented is as follows:
						Years Ended December 31,
						2014			2013		2012
						(Dollars in millions)
		The components of earnings before income taxes are as follows:
		U.S.				$	195		$	331	$	464
		Non-U.S.					235			790		544
						$	430		$	1,121	$	1,008
		Significant components of the provision for income taxes are as follows:
		Current
			Non-U.S.			$	190		$	161	$	169
			U.S. State and Local				-			-		2
				Total current			190			161		171
		Deferred
			U.S. Federal				30			-39		-98
			Non-U.S.				-127			-1		-97
			U.S. State and Local				3			-7		-9
				Total deferred			-94			-47		-204
		Income tax expense (benefit)				$	96		$	114	$	-33
		The reconciliation of income taxes calculated at the U.S. federal statutory income tax rate of 35% to income tax expense (benefit) is:
		Income taxes at U.S. statutory rate				$	150		$	392	$	353
		U.S. state and local income taxes net of U.S. federal tax benefit					3			-6		-7
		Difference in income tax on foreign earnings, losses and remittances					5			-23		-197
		Tax holidays and incentives					-28			-32		-38
		Valuation allowance					7			17		-63
		Foreign and other tax credits					-47			-196		-82
		Impact of tax legislation					-3			-43		-9
		Nondeductible expenses					9			8		12
		Other					-			-3		-2
						$	96		$	114	$	-33
	For the year ended December 31, 2014, the reconciliation above provides for an incremental tax expense associated with foreign earnings, losses and remittances, which is substantially impacted by the net pension settlement and curtailment loss in the United Kingdom which has a statutory tax rate substantially lower than the U.S. statutory rate. Income tax expense for the year ended December 31, 2013 includes a tax benefit of approximately $196 million related to our ability to utilize U.S. foreign tax credits and various tax legislation enacted during the year. Income tax benefit for the year ended December 31, 2012 includes a tax benefit of approximately $255 million related to various tax planning and legal entity restructuring actions.
	Deferred tax assets and liabilities result from differences in the bases of assets and liabilities for tax and financial statement purposes. The approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of the deferred tax assets and liabilities are as follows:
					As of December 31,
					2014			2013
					(Dollars in millions)
		Deferred tax assets:
		Pensions and postretirement benefits other than pensions			$	274		$	218
		Inventory				40			41
		Reserves and accruals				315			327
		Net operating loss and credit carryforwards				617			682
		Fixed assets and intangibles				65			58
		Other				73			69
			Total deferred tax assets			1,384			1,395
		Valuation allowance for deferred tax assets				-274			-295
		Net deferred tax assets				1,110			1,100
		Deferred tax liabilities:
		Pensions and postretirement benefits other than pensions				-100			-200
		Fixed assets and intangibles				-282			-266
		Undistributed earnings of foreign subsidiaries				-104			-116
		Deferred gain				-56			-59
		Other				-63			-81
			Total deferred tax liabilities			-605			-722
		Net deferred taxes			$	505		$	378
	The Company has separately reflected the current deferred tax asset and the long term deferred tax assets and liabilities on the consolidated balance sheets for December 31, 2014 and 2013. However, the current deferred tax liability of $9 million as of December 31, 2014 and $17 million as of December 31, 2013 is included in other current liabilities on the consolidated balance sheets. The table above includes the applicable deferred tax assets of $2 million and deferred tax liabilities of $4 million related to the Company's engine valve business which is classified as held for sale as of December 31, 2014.
	As of December 31, 2014 and 2013, the Company had deferred tax assets from domestic and foreign net operating loss and tax credit carryforwards of approximately $617 million and $682 million, respectively. Approximately $220 million of the deferred tax assets at December 31, 2014 relate to net operating loss carryforwards or tax credits that can be carried forward indefinitely with the remainder expiring between 2015 and 2034. The deferred tax asset relating to U.S. tax credit carryforwards as of December 31, 2014 is lower than the actual amount reported and expected to be reported on our U.S. tax returns by approximately $147 million. This difference is the result of tax deductions in excess of financial statement amounts for stock based compensation and tax deductible goodwill. When these amounts are realized, the Company will record a credit to additional paid in capital and financial statement goodwill, respectively.
	The Company has provided deferred income taxes for the estimated U.S. federal income tax, foreign income tax, and applicable withholding tax effects of earnings of subsidiaries expected to be distributed to the Company. Deferred income taxes have not been provided on approximately $3.4 billion of undistributed earnings of certain foreign subsidiaries as such amounts are considered to be permanently reinvested. Determination of the amount of unrecognized deferred income tax liability relating to the remittance of such undistributed earnings is not practicable.
	In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or consolidated group recording the net deferred tax asset is considered, along with all other available positive and negative evidence. Concluding that a valuation allowance is not required is difficult when there is significant negative evidence which is objective and verifiable, such as cumulative losses in recent years. However, the three year loss position is not solely determinative and accordingly, we consider all other available positive and negative evidence in our analysis. The Company utilizes a rolling twelve quarters of pre-tax income or loss adjusted for significant permanent book to tax differences as a measure of our cumulative results in recent years. If, based upon the weight of available evidence, it is more likely than not the deferred tax assets will not be realized, a valuation allowance is recorded. Based upon this analysis, we believe it is more likely than not that the net deferred tax asset in certain foreign jurisdictions may not be realized in the future. Accordingly, we maintain a valuation allowance related to those net deferred tax assets.
	During 2014, the Company recorded a net tax expense of $7 million related to increases in our global valuation allowance against net deferred tax assets, which is comprised of two items: 1) a net tax expense of $27 million resulting from net losses in certain foreign jurisdictions with no corresponding tax benefit due to increases in our valuation allowances, and 2) a net tax benefit of $20 million resulting from changes in determinations relating to the potential realization of deferred tax assets and the resulting reversal of a valuation allowance on certain deferred tax assets in Poland partially offset by the generation of a valuation allowance in Italy. During 2013, the Company recorded a net tax expense of $17 million resulting from net losses in certain foreign jurisdictions with no corresponding tax benefit due to increases in our valuation allowances. During 2012, the Company recorded a net tax benefit of $63 million related to reductions in our global valuation allowance against net deferred tax assets, which is comprised of two items: 1) a net tax expense of $37 million resulting from net losses in certain foreign jurisdictions with no corresponding tax benefit due to increases in our valuation allowances, and 2) a net tax benefit of $100 million resulting from changes in determinations relating to the potential realization of deferred tax assets and the resulting reversal of a valuation allowance on net deferred tax assets in Canada and certain other foreign subsidiaries.
	At December 31, 2014, 2013, and 2012, the Company had $168 million, $176 million, and $160 million of gross unrecognized tax benefits, respectively. In addition, at December 31, 2014, 2013, and 2012 the amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate was $129 million, $136 million, and $118 million, respectively. The gross unrecognized tax benefits differ from the amount that would affect the effective tax rate due to the impact of valuation allowances, and foreign country offsets relating to transfer pricing adjustments.
	A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:
						2014			2013		2012
						(Dollars in millions)
		Balance, January 1,				$	176		$	160	$	148
		Additions based on tax positions related to the current year				16			14		12
		Additions for tax positions of prior years				8			32		40
		Reductions for tax positions of prior years				-7			-28		-23
		Reductions for settlements				-7			-1		-17
		Reductions due to lapse in statute of limitations				-8			-3		-3
		Change attributable to foreign currency translation				-10			2		3
	Balance, December 31,				$	168		$	176	$	160
The Company operates globally but considers its more significant tax jurisdictions to include the United States, Germany, China, the Czech Republic, Poland, Spain, and the United Kingdom. Generally, the Company has years open to tax examination in significant tax jurisdictions from 2009 forward. The income tax returns of several subsidiaries in various tax jurisdictions are currently under examination. Although it is not possible to predict the timing of the conclusions of all ongoing tax audits with accuracy, it is possible that some or all of these examinations will conclude within the next 12 months. It is also reasonably possible that certain statute of limitations may expire relating to various foreign jurisdictions within the next 12 months. As such, it is possible that a change in the Company's gross unrecognized tax benefits may occur; however, it is not possible to reasonably estimate the effect this may have upon the gross unrecognized tax benefits.
The Company recognizes interest and penalties with respect to unrecognized tax benefits as a component of income tax expense. At December 31, 2014, 2013, and 2012, accrued interest and penalties related to unrecognized tax benefits was $42 million, $36 million, and $24 million, respectively. Tax expense for the years ended December 31, 2014, 2013, and 2012 includes net interest and penalties of $10 million, $12 million, and $1 million, respectively on unrecognized tax benefits.
On July 17, 2013, the United Kingdom – Finance Bill of 2013 received Royal Assent, thereby becoming law as the Finance Act of 2013 (the “2013 Act”). The 2013 Act provides for a reduction to the corporate income tax rate from 23% to 21% effective April 1, 2014, with a further reduction to 20% effective April 1, 2015. The impact of this tax legislation was a tax benefit of approximately $21 million recorded during 2013.
On January 2, 2013, the American Taxpayer Relief Act of 2012 was enacted, which retroactively reinstated and extended various tax provisions applicable to the Company, including the research and development tax credit and the look through rules for controlling foreign corporations. The impact of this tax legislation was a tax benefit of approximately $15 million recorded during 2013.
On July 17, 2012, the United Kingdom - Finance Bill of 2012 received Royal Assent, thereby becoming law as the Finance Act of 2012 (the “2012 Act”). The 2012 Act provides for a reduction to the corporate income tax rate from 25% to 24% effective April 1, 2012, with a further reduction to 23% effective April 1, 2013. The impact of this tax legislation was a tax benefit of approximately $9 million recorded during 2012.

Retirement_Benefits

Retirement Benefits	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Retirement Benefits	11. Retirement Benefits
	Pension Plans
	A significant number of employees of the Company and its subsidiaries participate in the Company's defined benefit plans or retirement/termination indemnity plans.
	The following table provides a reconciliation of the changes in the plans' benefit obligation and fair value of assets for the years ended December 31, 2014 and 2013 and a statement of the funded status as of December 31, 2014 and 2013:
			2014								2013
								Rest of							Rest of
			U.S.		U.K.			World			U.S.		U.K.		World
			(Dollars in millions)
	Total accumulated benefit obligation at December 31,		$	349	$	1,460		$	754		$	767	$	4,730	$	865
	Change in benefit obligation:
	Benefit obligations at beginning of period		$	769	$	4,729		$	930		$	1,073	$	4,730	$	955
		Service cost		2		-			21			2		-		23
		Interest cost		37		206			34			42		189		36
		Plan amendments		-		7			2			-		-		1
		Actuarial (gain) loss		105		1,384			237			-133		-7		-34
		Foreign currency exchange rate changes		-		-321			-113			-		95		-
		Settlement/Curtailment (gain) loss		-520		-4,283			-224			-153		-		-
		Benefits paid		-43		-262			-46			-62		-278		-51
	Benefit obligations at December 31,			350		1,460			841			769		4,729		930
	Change in plan assets:
	Fair value of plan assets at beginning of period			695		5,763			328			804		5,552		303
		Actual return on plan assets, less plan expense		82		1,022			31			46		320		48
		Foreign currency exchange rate changes		-		-361			-26			-		122		-23
		Company contributions		41		219			61			60		47		51
		Settlements		-520		-4,283			-223			-153		-		-
		Benefits paid		-43		-262			-46			-62		-278		-51
	Fair value of plan assets at December 31,			255		2,098			125			695		5,763		328
	Funded status at December 31,		$	-95	$	638		$	-716		$	-74	$	1,034	$	-602
	During 2014, the Company undertook a number of actions to abate a significant portion of pension obligations in the U.S., U.K. and Canada by offering lump sum payments to certain active and former employees and entering into group annuity contracts with third party carriers to pay and administer future annuity payments related to substantially all retirees. These actions resulted in settlement charges of $117 million, $600 million and $73 million in the U.S., U.K. and Canada, respectively. A significant portion of these actions were financed with plan assets; however, additional cash contributions of $163 million and $12 million in the U.K. and Canada, respectively, were required.
	During 2013 and 2012, the Company undertook a number of similar actions in respect of its U.S. defined benefit plans. Participants who accepted the offers received lump sum payments in the amount of $148 million and $298 million which were paid from plan assets in 2013 and 2012, respectively. The Company recognized settlement losses of $35 million in 2013 and $88 million in 2012.
	The following table provides the amounts recognized in the consolidated balance sheets:
			As of December 31,
			2014								2013
								Rest of							Rest of
			U.S.		U.K.			World			U.S.		U.K.		World
			(Dollars in millions)
		Non-current assets	$	2	$	638		$	23		$	2	$	1,034	$	23
		Current liabilities		-		-			-22			-		-		-25
		Liabilities held-for-sale		-		-			-40			-		-		-
		Long-term liabilities		-97		-			-677			-76		-		-600
		Net amount recognized	$	-95	$	638		$	-716		$	-74	$	1,034	$	-602
	The pre-tax amounts recognized in accumulated other comprehensive earnings (losses) consist of:
			As of December 31,
			2014								2013
								Rest of							Rest of
			U.S.		U.K.			World			U.S.		U.K.		World
			(Dollars in millions)
		Prior service benefit (cost)	$	-	$	-		$	-4		$	-	$	-	$	-3
		Net gain (loss)		-80		-210			-300			-132		-144		-197
		Accumulated other comprehensive earnings (loss)	$	-80	$	-210		$	-304		$	-132	$	-144	$	-200
	Information for pension plans with an accumulated benefit obligation in excess of plan assets is as follows:
			As of December 31,
			2014					2013
					Rest of						Rest of
			U.S.		World			U.S.			World
			(Dollars in millions)
		Projected benefit obligation	$	341	$	752		$	748		$	636
		Accumulated benefit obligation		339		665			746			572
		Fair value of assets		244		13			672			11
	The following table provides the components of net pension cost (income) and other amounts recognized in other comprehensive (earnings) loss for the Company's defined benefit pension plans and defined contribution plans:
			Years Ended December 31,
			2014								2013						2012
								Rest of							Rest of						Rest of
			U.S.		U.K.			World			U.S.		U.K.		World		U.S.		U.K.		World
		(Dollars in millions)
Net pension cost (income)
Defined benefit plans:
Service cost		$	2	$	-		$	21		$	2	$	-	$	23	$	4	$	-	$	19
Interest cost			37		206			34			42		189		36		59		215		38
Expected return on plan assets			-49		-341			-16			-59		-315		-20		-80		-328		-20
Settlement/Curtailment (gain) loss			117		600			72			35		-		-		92		-		2
Amortization of prior service (benefit) cost			-		-			1			-		-		1		2		-		-
Amortization of net (gain) loss			8		-			11			27		-		18		19		-		9
	Defined benefit plans		115		465			123			47		-126		58		96		-113		48
Defined contribution plans cost			23		4			24			22		3		16		22		3		16
	Net pension cost (income)		138		469			147			69		-123		74		118		-110		64
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
Prior service (benefit) cost			-		7			2			-		-		-1		-		-		1
Net (gain) loss			72		703			223			-120		-12		-61		33		295		125
Effect of exchange rates on amounts included in AOCI			-		-45			-36			-		3		-4		-		-2		7
Amortization or curtailment recognition of prior service benefit (cost)			-		-7			-1			-		-		1		-2		-		-1
Amortization or settlement recognition of net gain (loss)			-125		-592			-84			-62		-		-19		-110		-		-11
Total recognized in other comprehensive (earnings) loss			-53		66			104			-182		-9		-84		-79		293		121
Total recognized net pension (income) cost and other comprehensive (earnings) loss		$	85	$	535		$	251		$	-113	$	-132	$	-10	$	39	$	183	$	185
The estimated amounts that will be amortized from accumulated other comprehensive earnings over the next fiscal year are as follows:
		Year Ending
		31-Dec-15
				Rest of
		U.S.		World
		(Dollars in millions)
	Prior service (benefit) cost	$	-	$	1
	Net (gain) loss		7		29
	Total	$	7	$	30
Plan Assumptions. The weighted-average assumptions used to determine net periodic benefit cost were:
		Years Ended December 31,
		2014								2013						2012
							Rest of							Rest of						Rest of
		U.S.		U.K.			World			U.S.		U.K.		World		U.S.		U.K.		World
Discount rate		5	%	4.5	%		4.18	%		4	%	4.25	%	3.9	%	4.75	%	4.75	%	4.82	%
Expected long-term return on plan assets		7.5	%	6.25	%		6.31	%		7.75	%	6.25	%	6.53	%	7.75	%	6.25	%	6.5	%
Rate of increase in compensation levels		3.5	%	N/A			2.9	%		5	%	N/A		2.9	%	4.76	%	N/A		2.92	%
To develop the expected long-term rate of return on asset assumptions, the Company considered the historical returns and the future expectations for returns for each asset class, as well as the target asset allocation of the pension portfolio. The U.K. pension plan and certain of the U.S. pension plans are closed to future benefits, therefore the rate of increase in compensation was not applicable in determining the net period benefit cost for 2014, 2013 and 2012, nor in determining the benefit obligation as of December 31, 2014 and 2013.
The weighted-average assumptions used to calculate the benefit obligations were:
		As of December 31,
		2014								2013
							Rest of							Rest of
		U.S.		U.K.			World			U.S.		U.K.		World
Discount rate		4.25	%	3.75	%		2.41	%		5	%	4.5	%	4.18	%
Rate of increase in compensation levels		5	%	N/A			2.89	%		3.5	%	N/A		2.9	%
Plan Assets. The U.S. and U.K. plan assets represent approximately 95% of the total plan assets of defined benefit plans. All remaining assets are deemed immaterial and not reflected below.
The goals and investment objectives of the asset strategy are to ensure that there is an adequate level of assets to meet benefit obligations to participants and retirees over the life of the participants and maintain liquidity in the plan assets sufficient to cover current benefit obligations. Risk is managed by investing in a broad range of asset classes and the use of liability matching derivative instruments. Within the asset classes, investments are made in a broad range of individual securities. There are no equity securities of the Company in the equity asset category.
The investment policies for the U.K. and U.S. pension plans are based on a low volatility and risk asset allocation that targets a sufficient level of return to meet benefit payments as they become due over the long term. The investment policy includes a significant allocation to a liability driven cash-flow matching strategy which also includes a substantial interest rate hedging program as well as an inflation hedging program in the U.K. The remaining assets are invested mainly in physical and synthetic equities (with a degree of protection from downside risk), a range of U.K., U.S. and other credit opportunities (including asset backed securities) and property to achieve a diversified real return to meet the expected future liability outflows.
As of December 31, 2014, the investment policy resulted in an asset allocation for all plans of 52% in fixed income investments, 5% in equity and structured equity investments, 4% in real estate, and 39% in cash and other investments. Equity investments include investments in large-cap and mid-cap companies and mutual funds located throughout the world. Structured equity investments include equity option “collar” structures which reduce the outright exposure to falls in the levels of underlying equity markets. Fixed income securities include government bonds, corporate bonds of companies from diversified industries, asset backed securities and collateral assets held in government bonds for structured equity holdings. Real estate includes investments in real estate and funds that invest in real estate. Cash and other investments primarily include cash held by the plan, U.K. government treasuries and certain types of derivative instruments including interest rate and inflation swaps that are utilized to manage risks associated with the assets held by the plan.
The fair values of the Company's U.S. and U.K. pension plan assets by asset category using the fair value three-level hierarchy (see Note 12) are as follows:
		As of December 31,
		2014								2013
		Level 1		Level 2			Level 3			Level 1		Level 2		Level 3
		(Dollars in millions)
Cash and cash equivalents		$	943	$	-		$	-		$	656	$	-	$	-
Fixed income investments:
	Corporate bonds		-		109			-			-		1,864		-
	U.K. government guaranteed bonds		359		-			-			1,724		-		-
	Collateral assets for structured equity holdings		86		-			-			80		-		-
	Asset backed securities		-		665			-			-		1,081		-
Equities:
	Common stock		2		-			-			4		-		-
	Structured equity holdings		-		114			-			-		916		-
Real estate			-		99			-			-		148		-
Other			-		-24			-			-		-15		-
	Total assets at fair value	$	1,390	$	963		$	-		$	2,464	$	3,994	$	-
Contributions. In 2015, the Company's minimum expected funding is $7 million for the U.K. pension plan and approximately $29 million for pension plans in the rest of the world. However, the Company may, at its discretion, make additional contributions. The Company does not expect to make any funding contributions to the U.S. plans in 2015.
Expected Future Pension Benefit Payments. The following pension benefit payments, which reflect current obligations and expected future service, as appropriate, are expected to be paid from the underlying plans to the participants:
		U.S.			U.K.				Rest of World
	Years Ending December 31,	(Dollars in millions)
	2015	$	7		$	29			$	24
	2016		36			24				26
	2017		10			26				28
	2018		11			28				30
	2019		12			32				31
	2020 - 2024		76			225				183
Other Benefits. The Company also sponsors qualified defined contribution pension plans covering employees at certain operations and an unfunded non-qualified defined contribution plan for a select group of highly compensated employees. These plans allow participants to defer compensation, and generally provide employer matching contributions.
Postretirement Benefits Other Than Pensions (“OPEB”)
The Company provides health care and life insurance benefits for a substantial number of its retired employees in the United States and Canada, and for certain future retirees. The health care plans provide for the sharing of costs, in the form of retiree contributions, deductibles and coinsurance. Life insurance benefits are generally noncontributory. The Company's policy is to fund the cost of postretirement health care and life insurance benefits as those benefits become payable.
The following table provides a reconciliation of the changes in the plans' benefit obligation and fair value of assets during the years ended December 31, 2014 and December 31, 2013, and a statement of the funded status of the programs as of December 31, 2014 and 2013:
		2014					2013
				Rest of						Rest of
		U.S.		World			U.S.			World
		(Dollars in millions)
Change in benefit obligation:
Benefit obligations at beginning of period		$	323	$	88		$	330		$	103
	Service cost		-		1			1			1
	Interest cost		15		4			14			4
	Actuarial (gain) loss		-23		10			-40			-10
	Foreign currency exchange rate changes		-		-7			-			-6
	Plan amendments		-		-			57			3
	Plan participant contributions		1		-			1			-
	Benefits paid		-28		-6			-40			-7
Benefit obligations at December 31,			288		90			323			88
Change in plan assets:
Fair value of plan assets at beginning of period			-		-			-			-
	Company contributions		27		6			39			7
	Plan participant contributions		1		-			1			-
	Benefits paid		-28		-6			-40			-7
Fair value of plan assets at December 31,			-		-			-			-
Funded status at December 31,		$	-288	$	-90		$	-323		$	-88
The following table provides the amounts recognized in the consolidated balance sheets:
		As of December 31,
		2014					2013
				Rest of						Rest of
		U.S.		World			U.S.			World
		(Dollars in millions)
	Current liabilities	$	-26	$	-6		$	-30		$	-6
	Long-term liabilities		-262		-84			-293			-82
	Total amount recognized	$	-288	$	-90		$	-323		$	-88
The pre-tax amounts recognized in accumulated other comprehensive earnings (losses) consist of:
		As of December 31,
		2014					2013
				Rest of						Rest of
		U.S.		World			U.S.			World
		(Dollars in millions)
	Prior service benefit (cost)	$	50	$	10		$	58		$	17
	Net gain (loss)		19		-7			-2			2
	Accumulated other comprehensive earnings (loss)	$	69	$	3		$	56		$	19
The following table provides the components of net postretirement benefit (income) cost and other amounts recognized in other comprehensive (earnings) loss for the plans.
		Years Ended December 31,
		2014					2013					2012
				Rest of						Rest of				Rest of
		U.S.		World			U.S.			World		U.S.		World
		(Dollars in millions)
Net postretirement benefit (income) cost:
Service cost		$	-	$	1		$	1		$	1	$	1	$	1
Interest cost			15		4			14			4		16		5
Curtailment/Settlement (gain) loss			-		-			-29			-		-36		-
Amortization of prior service (benefit) cost			-8		-5			-13			-5		-22		-7
Amortization of net (gain) loss			-2		-			1			1		-		1
	Net postretirement benefit (income) cost		5		-			-26			1		-41		-
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss:
Prior service (benefit) cost			-		-			57			3		-		3
Net (gain) loss			-23		10			-40			-9		-6		-8
Amortization or curtailment recognition of prior service benefit (cost)			8		5			31			5		51		6
Amortization or settlement recognition of net gain (loss)			2		1			9			-		6		-1
Total recognized in other comprehensive (earnings) loss			-13		16			57			-1		51		-
Total recognized net postretirement benefit (income) cost and other comprehensive (earnings) loss		$	-8	$	16		$	31		$	-	$	10	$	-
Curtailments and Settlements. The Company recorded curtailment/settlement gains during the years ended December 31, 2013 and 2012 of approximately $28 million and $36 million, respectively, related to the termination of retiree medical benefits for certain salaried and hourly employees. In addition, during the year ended December 31, 2013, the Company recorded settlement gains of approximately $1 million related to retiree medical buyouts.
The estimated amounts that will be amortized from accumulated other comprehensive earnings over the next fiscal year are as follows:
		Year Ending
		31-Dec-15
				Rest of
		U.S.		World
		(Dollars in millions)
	Prior service (benefit) cost	$	-7	$	-5
	Net actuarial (gain) loss		-4		-
	Total	$	-11	$	-5
Plan Assumptions. The weighted-average assumptions used to determine net postretirement benefit (income) cost were:
		Years Ended December 31,
		2014					2013					2012
				Rest of						Rest of				Rest of
		U.S.		World			U.S.			World		U.S.		World
Discount rate		5	%	4.75	%		4	%		4	%	4.75	%	4.5	%
The discount rate and assumed health care cost trend rates used in the measurement of the benefit obligation as of the applicable measurement dates were:
		As of December 31,
		2014					2013
				Rest of						Rest of
		U.S.		World			U.S.			World
Discount rate		4	%	3.75	%		5	%		4.75	%
Initial health care cost trend rate at end of year		7	%	4.5	%		6.9	%		4	%
Ultimate health care cost trend rate		4.5	%	5	%		5	%		5	%
Year in which ultimate rate is reached		2022		2017			2018			2017
A one-percentage-point change in the assumed health care cost trend rate would have had the following effects:
		One-Percentage-Point
		Increase							Decrease
					Rest of							Rest of
		U.S.			World				U.S.			World
		(Dollars in millions)
Effect on total of service and interest cost components for the year ended December 31, 2014		$	1		$	-			$	-1		$	-
Effect on postretirement benefit obligation as of measurement date		$	21		$	7			$	-18		$	-7
Contributions. The Company funds its OPEB obligations on a pay-as-you-go basis. In 2015, the Company expects to contribute approximately $32 million to its OPEB plans.
Expected Future Postretirement Benefit Payments. The following postretirement benefit payments, which reflect expected future service, as appropriate, are expected to be paid:
		U.S.			Rest of World
	Years Ending December 31,	(Dollars in millions)
	2015	$	27		$	5
	2016		26			5
	2017		25			5
	2018		24			5
	2019		23			5
	2020 -2024		96			28

Fair_Value_Measurements_and_Fi

Fair Value Measurements and Financial Instruments	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Measurements and Financial Instruments [Text Block]	12. Fair Value Measurements and Financial Instruments
	The inputs to valuation techniques used to measure fair value are prioritized into a three-level hierarchy. This hierarchy gives the highest priority to quoted prices in active markets for identical assets and liabilities and lowest priority to unobservable inputs, as follows:
	Level 1. Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company can access at the measurement date.
	Level 2. Inputs are other than quoted prices that are observable for the asset or liability, either directly or indirectly.
	Level 3. Unobservable inputs are supported by little or no market activity. The unobservable inputs represent the Company's best assumptions of how market participants would price the assets or liabilities.
	Items Measured at Fair Value on a Recurring Basis
	The fair value measurements for assets and liabilities recognized in the Company's consolidated balance sheet are as follows:
			As of December 31,
			2014				2013				Measurement Approach
			(Dollars in millions)
		Foreign currency exchange contracts — current assets	$	7			$	6			Level 2
		Foreign currency exchange contracts — noncurrent assets		2				-			Level 2
		Foreign currency exchange contracts — current liability		13				5			Level 2
		Foreign currency exchange contracts — noncurrent liability		13				9			Level 2
	The Company's foreign currency exchange contracts are recorded at fair value derived principally from or corroborated by observable market data under the market approach. Inputs include quoted prices for similar assets and liabilities (risk adjusted), and market-corroborated inputs, such as market comparables, interest rates, yield curves and other items that allow value to be determined. The Company uses quoted currency forward rates and quoted interest rate curves, respectively, to calculate forward values, and then discounting the forward values. In addition, the Company's calculation of the fair value of its foreign currency option contracts uses quoted currency volatilities.
	The discount rates for all derivative contracts are based on quoted bank deposit or swap interest rates. For contracts which, when aggregated by counterparty, are in a liability position, the rates are adjusted by the credit spread which market participants would apply if buying these contracts from the Company's counterparties.
	There were no changes in the Company's valuation techniques during the year ended December 31, 2014.
	Items Measured at Fair Value on a Nonrecurring Basis
	In addition to items that are measured at fair value on a recurring basis, we also have assets that may be measured at fair value on a nonrecurring basis. These assets include long-lived assets, intangible assets and investments in affiliates which may be written down to fair value as a result of impairment.
	The Company has determined that the fair value measurements related to each of these assets rely primarily on Company-specific inputs and the Company's assumptions about the use of the assets, as observable inputs are not available. As such, the Company has determined that each of these fair value measurements reside within Level 3 of the fair value hierarchy. To determine the fair value of long-lived assets, the Company utilizes the projected cash flows expected to be generated by the long-lived assets, then discounts the future cash flows over the useful life of the long-lived assets by using a risk-adjusted rate for the Company. The Company records asset impairments associated with its determination of the fair value of its long-lived assets that exhibited indicators of impairment (see Note 14).
	Financial Instruments Not Carried at Fair Value
	The carrying value and estimated fair value of financial instruments that are not carried on the Company's balance sheet at fair value are as follows:
			As of December 31,
			2014						2013
				Carrying		Fair			Carrying				Fair	Measurement
				Value		Value			Value				Value	Approach
			(Dollars in millions)
		Short-term debt, fixed and floating rate	$	222		$	222		$	159		$	159	Level 2
		Fixed rate long-term debt	$	1,326		$	1,389		$	1,821		$	1,884	Level 2
		Fixed rate exchangeable notes	$	30		$	109		$	134		$	375	Level 2
	The carrying value of short-term debt approximates fair value because of the short term nature of these instruments. The fair value of long-term debt was determined primarily from quoted market prices, as provided by participants in the secondary marketplace. For long-term debt without a quoted market price, the Company estimates the fair value using discounted cash flow models with market based borrowing rates for similar types of arrangements.
	Derivative Instruments and Hedging Activities
	The Company is exposed to fluctuations in foreign currency exchange rates, interest rates and commodity prices. The Company enters into derivative instruments primarily to hedge portions of its forecasted foreign currency denominated cash flows and designates these derivative instruments as cash flow hedges in order to qualify for hedge accounting. Certain foreign exchange contracts that do not qualify for hedge accounting are entered into hedge recognized foreign currency transactions. All gains or losses on derivative instruments which are not designated for hedge accounting treatment or do not qualify for hedge accounting, or result from hedge ineffectiveness, are reported in earnings immediately.
	In addition, the Company is exposed to credit loss in the event of nonperformance by the counterparty to the derivative financial instruments. The Company attempts to limit this exposure by entering into agreements directly with a number of major financial institutions that meet the Company's credit standards and that are expected to fully satisfy their obligations under the contracts, and by monitoring the Company's credit exposure to each counterparty in light of its current credit quality.
	As of December 31, 2014, the Company had a notional value of $2.6 billion in foreign exchange contracts outstanding. These foreign exchange contracts mature at various dates through December 2017. Foreign currency exposures are reviewed monthly and any natural offsets are considered prior to entering into a derivative financial instrument.
	Cash Flow Hedges. For any derivative instrument that is designated and qualifies as a cash flow hedge, the effective portion of the gain or loss on the derivative is reported as a component of Other Comprehensive Income (“OCI”), and is subsequently reclassified into earnings in the period which the hedged transaction affects earnings. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in earnings. Such amounts were immaterial for the years ended December 31, 2014, 2013 and 2012.
	For the years ended December 31, 2014, 2013 and 2012, the effective portion of gains and losses on derivatives designated as cash flow hedges and recognized in OCI was a loss of $6 million, a loss of $33 million and a gain of $80 million, respectively, which were related to foreign currency exchange contracts. The effective portion of gains and losses on cash flow hedges reclassified from OCI into the statement of earnings for the years ended December 31, 2014, 2013 and 2012 was a loss of $5 million, a gain of $1 million and a gain of $3 million, respectively, and was included in various line items on the statement of earnings. Gains and losses reclassified into earnings include the discontinuance of cash flow hedges, which were immaterial for the years ended December 31, 2014, 2013 and 2012. Approximately $3 million of losses, net of tax, which are included in OCI, are expected to be reclassified into earnings in 2015.
	Fair Value Hedges. For any derivative instrument that is designated and qualifies as a fair value hedge, the gain or loss on the derivative as well as the offsetting loss or gain on the underlying hedged item is recognized in current earnings. As of December 31, 2014 and 2013, the Company had no fair value hedges outstanding.
	Undesignated Derivatives. For the years ended December 31, 2014, 2013 and 2012, the Company recognized a loss of $25 million, a loss of $5 million, and a gain of $14 million, respectively, in other expense (income) – net, for derivative instruments not designated as hedging instruments.
	Credit-Risk-Related Contingent Features. The Company has entered into International Swaps and Derivatives Association (“ISDA”) agreements with each of its significant derivative counterparties. These agreements provide bilateral netting and offsetting of accounts that are in a liability position with those that are in an asset position. These agreements do not require the Company to maintain a minimum credit rating in order to be in compliance with the terms of the agreements and do not contain any margin call provisions or collateral requirements that could be triggered by derivative instruments in a net liability position. As of December 31, 2014, the Company had not posted any collateral to support its derivatives in a liability position.
	Offsetting of Derivative Assets and Liabilities
	The following table reflects the fair value of derivative assets and liabilities; the amounts consist of interest rate contracts and foreign currency exchange contracts, none of which are individually significant:
				As of December 31,
				2014											2013
				Gross Amounts Recognized				Gross Amounts Offset				Net Amounts Reported			Gross Amounts Recognized		Gross Amounts Offset		Net Amounts Reported
					(Dollars in millions)
	Derivative Assets:
		Foreign Currency		$	45			$	-36			$	9		$	42	$	-36	$	6
	Derivative Liabilities:
		Foreign Currency			62				-36				26			50		-36		14

Debt

Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt	13. Debt
	Total outstanding debt of the Company consisted of the following:
						As of December 31,
						2014		2013
						(Dollars in millions)
			Short-term debt			$	222	$	159
			Long-term debt:
			6.375% Senior Notes, due 2014			$	-	$	234
			7.00% Senior Notes, due 2014				-		233
			7.25% Senior Notes, due 2017				444		446
			4.50% Senior Notes, due 2021				400		400
			4.45% Senior Notes, due 2023				400		400
			Exchangeable senior notes, due 2015				30		134
			Revolving credit facility				-		-
			Capitalized leases				14		18
			Other borrowings				68		90
				Total long-term debt			1,356		1,955
			Less current portion				72		482
				Long-term debt, net of current portion		$	1,284	$	1,473
	The weighted average interest rate on the Company's debt as of December 31, 2014 and 2013 was 5.4% and 5.9%, respectively. The maturities of long-term debt outstanding as of December 31, 2014 are:
	Years Ended December 31,			(Dollars in millions)
	2015			$	72
	2016				25
	2017				448
	2018				3
	2019				3
	Thereafter				805
		Total		$	1,356
	Senior Notes
	4.45% Senior Notes. In November 2013, the Company issued $400 million in aggregate principal amount of 4.45% senior unsecured notes due 2023 in a private placement. Interest is payable semi-annually on December 1 and June 1 of each year.
	4.50% Senior Notes. In February 2013, the Company issued $400 million in aggregate principal amount of 4.50% senior unsecured notes due 2021 in a private placement. Interest is payable semi-annually on March 1 and September 1 of each year.
	7.25% Senior Notes. In March 2007, the Company issued $600 million in aggregate principal amount of 7.25% senior unsecured notes due 2017 in a private placement. Interest is payable semi-annually on March 15 and September 15 of each year.
	6.375% Senior Notes and 7.00% Senior Notes Issued in 2007. On March 15, 2014, the 6.375% Senior Notes and 7.00% Senior Notes matured and the Company paid the principal amounts outstanding of €170 million and $233 million, respectively.
	Senior Note Repurchases. During 2013 and 2012, the Company repurchased portions of its senior notes due in 2014 and 2017 totaling approximately $91 million and $48 million, respectively, in principal amount and recorded a loss on retirement of debt of $5 million in each year, including the write-off of a portion of debt issuance costs, discounts and premiums. The repurchased notes were retired upon settlement.
	Exchangeable Senior Notes
	In November 2009, the Company issued approximately $259 million in aggregate principal amount of 3.50% exchangeable senior unsecured notes due 2015 (the “Exchangeable Senior Notes”) in a private placement. Prior to September 1, 2015, the notes are exchangeable only upon specified events or conditions being met and, thereafter, at any time. One condition was met as of December 31, 2014, and as such, the notes are exchangeable in the first quarter of 2015. They will remain exchangeable in subsequent quarters if the condition continues to be met, which occurs if the last reported sale price of the Company's common stock for at least 20 of the last 30 trading days of the immediately preceding quarter is greater than $38.415, subject to adjustment. The initial exchange rate is 33.8392 shares of the Company's common stock per $1,000 principal amount of notes. The Company's exchange obligation may be settled, at its option, in shares of its stock, cash or a combination of cash and shares of its stock. Interest is payable on June 1 and December 1 of each year. The Exchangeable Senior Notes will mature on December 1, 2015, unless earlier exchanged, repurchased by the Company at the holder's option upon a fundamental change, or optionally redeemed by the Company as provided in the indenture.
	The Exchangeable Senior Notes were recorded with a debt discount which decreased debt and increased paid-in-capital in order to separate the liability and embedded equity components. The debt component will accrete up to the principal amount to effectively yield 9.0% over the term of the debt. The debt discount as of December 31, 2014 and December 31, 2013 was $1 million and $14 million, respectively. The total interest expense recognized for the years ended December 31, 2014, 2013 and 2012, was approximately $11 million, $13 million and $13 million, respectively, including $5 million, $6 million and $6 million in each respective period relating to the stated coupon rate.
	Exchangeable Senior Notes—Exchanges. In 2014 and 2013 Exchangeable Senior Note holders exchanged approximately $116 million and $26 million, respectively, in principal amount of notes for 3,937,079 and 880,350 shares, respectively, of Company stock. In conjunction with the exchanges, the Company recorded a loss on retirement of debt of $7 million and $3 million, respectively, including the write-off of a portion of related debt issuance costs and debt discount, as well as a reduction of $289 million and $37 million, respectively, to paid-in-capital relating to the conversion feature of the Exchangeable Senior Notes.
	Senior Credit Facilities
	During the third quarter of 2012, the Company entered into its Eighth Amended and Restated Credit Agreement (the “Eighth Credit Agreement”) with the lenders party thereto. The Eighth Credit Agreement provides for senior credit facilities consisting of (i) a revolving credit facility in the amount of $1.4 billion which matures in September 2017, subject to certain conditions described below (the “Revolving Credit Facility”), and (ii) additional availability which may be used in the future for one or more term loans or additional revolving facilities (together with the Revolving Credit Facility, the “Facilities”). All of the Facilities are undrawn. The Company paid fees and expenses totaling approximately $9 million relating to the transaction. For the year ended December 31, 2012, the Company recorded a loss on retirement of debt of $1 million related to the write-off of a portion of debt issuance costs associated with the prior credit agreement.
	The Revolving Credit Facility will mature on September 28, 2017; provided that if, as of the last fiscal day of October 2016, an aggregate amount of the 7.25% Senior Notes in excess of $100 million remains outstanding and the amount of available liquidity does not exceed the aggregate amount of cash necessary to redeem the 7.25% Senior Notes by at least $500 million, then the maturity date of the Revolving Credit Facility will be 20 business days after such date.
	The commitment fee and the applicable margin for borrowing on the Revolving Credit Facility are subject to a ratings-based grid. The applicable margin in effect as of December 31, 2014 was 0.25% with respect to base rate borrowings, 1.25% with respect to eurocurrency borrowings, and the commitment fee on the undrawn amounts under the Revolving Credit Facility was 0.25%.
	The Company received an investment grade corporate credit rating with a stable outlook from Standard & Poor's Rating Services in the third quarter of 2013. Due to such investment grade rating, under the terms of the Revolving Credit Facility, the Company gave notice which automatically released the collateral securing the obligations under the facility.  The Company may be required to reinstate the released collateral if the Company no longer has an investment grade corporate credit rating with a stable outlook from at least one of the required rating agencies.
	Other Borrowings
	The Company has borrowings under uncommitted credit agreements in several of the countries in which it operates. The borrowings are from various individual banks at quoted market interest rates. As of December 31, 2014, the Company had short-term borrowings under uncommitted credit facilities totaling $221 million.
	Debt Repurchases
	As market conditions warrant, the Company may from time to time repurchase debt securities, including exchangeable debt securities, issued by the Company or its subsidiaries, in privately negotiated or open market transactions, by tender offer, exchange offer, or by other means, or the Company may optionally redeem such debt securities.
	Debt Covenants
	Senior Notes. The indentures governing the 2007 Senior Notes, 4.50% Senior Notes and 4.45% Senior Notes contain covenants that impose significant restrictions on the Company's business. The indentures for the 2007 Senior Notes contain covenants that could restrict, subject to a number of qualifications and limitations, the ability of TRW Automotive Inc., a wholly owned subsidiary of the Company (“TAI”), and its subsidiaries to pay certain dividends and distributions, or repurchase equity interests of the Company and certain of its subsidiaries (unless certain conditions are met). All the indentures contain covenants that, among other things, could restrict, subject to a number of qualifications and limitations, the ability of TAI and its subsidiaries to incur liens, engage in mergers or consolidations, and enter into sale and leaseback transactions. The indentures for each of the Company's outstanding notes also contain customary events of default.
	Senior Credit Facilities. The Company's Eighth Credit Agreement contains various customary covenants that could restrict, subject to certain exceptions, the ability of the Company and its subsidiaries to incur additional indebtedness or issue preferred stock; repurchase or repay other indebtedness; repurchase capital stock; pay dividends; create liens on assets; make investments, loans or advances; make certain acquisitions; engage in mergers or consolidations; enter into sale and leaseback transactions; engage in certain transactions with affiliates; amend certain material agreements; and change the business conducted by the Company.
	As of December 31, 2014, the Company was in compliance with all of its debt covenants.
	Potential Impact of the ZF Merger. The ZF Merger, if consummated, is expected to cause a change of control triggering event as defined in the Company's respective Senior Note indentures and a fundamental change as defined in the Exchangeable Senior Note indenture. In general, upon the occurrence of a change of control triggering event under the Senior Note indentures, the Company is required to offer to repurchase the Senior Notes, for a certain period of time, at a price of 101% of par, plus accrued and unpaid interest. Upon the occurrence of a fundamental change under the Exchangeable Senior Note indenture, the Company is required to offer to repurchase the Exchangeable Senior Notes, for a certain period of time, at a price of 100% of par, plus accrued and unpaid interest. Additionally, if the ZF Merger is consummated, the Company anticipates terminating the Eighth Credit Agreement.

Restructuring_Charges_and_Asse

Restructuring Charges and Asset Impairments	12 Months Ended
	Dec. 31, 2014
Restructuring Charges and Asset Impairments [Abstract]
Restructuring Charges and Asset Impairments	14. Restructuring Charges and Asset Impairments
	On an ongoing basis, the Company evaluates its business and objectives to ensure that it is properly configured and sized based on changing market conditions. Accordingly, the Company implements certain restructuring initiatives, including plant rationalizations and targeted workforce reduction efforts, as it deems appropriate.
	The Company's restructuring charges consist of severance, retention and outplacement services and severance-related postemployment benefits (collectively, “severance and other charges”), curtailment losses (gains) related to reductions of pension and retiree medical benefit obligations due to headcount reductions, and asset impairments related to restructuring activities.
	For the years ended December 31, 2014, 2013, and 2012, restructuring charges and asset impairments include the following:
								Occupant
					Chassis			Safety						Automotive
					Systems			Systems			Electronics			Components
					Segment			Segment			Segment			Segment		Corporate		Total
					(Dollars in millions)
	For the year ended December 31, 2014:
		Severance and other charges - net			$	55		$	7		$	-		$	4	$	-	$	66
		Curtailment gain - net				-1			-			-			-		-		-1
		Asset impairments related to restructuring activities				12			-			-			-		-		12
			Total restructuring charges			66			7			-			4		-		77
		Other asset impairments				7			-			-			-		-		7
		Total restructuring charges and asset impairments			$	73		$	7		$	-		$	4	$	-	$	84
	For the year ended December 31, 2013:
		Severance and other charges			$	22		$	36		$	-		$	-3	$	1	$	56
		Curtailment loss - net				1			-			-			-		-		1
		Asset impairments related to restructuring activities				-			1			-			1		-		2
			Total restructuring charges			23			37			-			-2		1		59
		Other asset impairments				4			-			1			2		-		7
		Total restructuring charges and asset impairments			$	27		$	37		$	1		$	-	$	1	$	66
	For the year ended December 31, 2012:
		Severance and other charges			$	64		$	20		$	-		$	7	$	-	$	91
		Asset impairments related to restructuring activities				2			-			-			-		-		2
			Total restructuring charges			66			20			-			7		-		93
		Other asset impairments				2			-			-			-		-		2
		Total restructuring charges and asset impairments			$	68		$	20		$	-		$	7	$	-	$	95
	During 2014, 2013, and 2012, the Company incurred restructuring charges as part of the Company's ongoing effort to better align the Company's cost structure with global automotive market conditions. Based on such conditions, primarily within the European and North American automotive market for 2014, and the European automotive market for 2013 and 2012, we incurred the following:
						Years Ended December 31,
						2014			2013			2012
						(Dollars in millions)
		Closure or planned closure of various facilities				$	54		$	31		$	35
		Workforce reduction initiatives					23			28			58
				Total restructuring charges		$	77		$	59		$	93
		Asset impairments related to write-downs of:
			Machinery and equipment			$	7		$	6		$	2
			Buildings				-			1			-
				Total asset impairments		$	7		$	7		$	2
	Restructuring Reserves
	The following table illustrates the movement of the restructuring reserves for severance and other charges, including reserves related to severance-related postemployment benefits for both periods presented:
					Years Ended December 31,
					2014			2013
					(Dollars in millions)
		Beginning balance			$	88		$	121
			Current period accruals, net of changes in estimates			66			56
			Liabilities held-for-sale			-2			-
			Used for purposes intended			-69			-95
			Effects of foreign currency translation and transfers			-9			6
		Ending balance			$	74		$	88
	Of the $74 million restructuring reserve accrued as of December 31, 2014, approximately $70 million is expected to be paid in 2015. The remaining balance is expected to be paid in 2016 through 2017 and is comprised primarily of involuntary employee termination arrangements in Europe.

Lease_Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2014
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
Lease Commitments	15. Lease Commitments
	The Company leases certain offices, manufacturing and research buildings, machinery, automobiles and computer and other equipment. Such leases, some of which are noncancelable and in many cases include renewals, are set to expire at various dates. Rental expense for operating leases was $110 million, $111 million, and $112 million for the years ended December 31, 2014, 2013, and 2012, respectively.
	As of December 31, 2014, the future minimum lease payments for noncancelable capital and operating leases with initial terms in excess of one year were as follows:
				Capital		Operating
		Years Ended December 31,		Leases		Leases
				(Dollars in millions)
		2015		$	3	$	60
		2016			3		51
		2017			3		47
		2018			3		43
		2019			2		48
		Thereafter			3		54
		Total minimum payments required		$	17	$	303
			Less amounts representing interest		3
		Present value of net minimum capital lease payments			14
			Less current installments		2
		Obligations under capital leases, excluding current installments		$	12

Transaction_Costs

Transaction Costs	12 Months Ended
	Dec. 31, 2014
Transaction Costs [Abstract]
Transaction Costs [Text Block]	16. Transaction Costs
	The Company incurred transaction and merger-related costs of $20 million for financial advisory and legal fees related to the ZF Merger (see Note 2) and the engine valve divestiture (see Note 4) for the year ended December 31, 2014.

Capital_Stock

Capital Stock	12 Months Ended
	Dec. 31, 2014
Capital Stock [Abstract]
Capital Stock Disclosure [Text Block]	17. Capital Stock
	The Company's authorized capital stock consists of (i) 500 million shares of common stock, par value $.01 per share (the “Common Stock”), of which 114,547,079 shares were issued and outstanding as of December 31, 2014, net of 4,668 shares of treasury stock withheld at cost to satisfy tax obligations for a specific grant under the Company's stock-based compensation plan; and (ii) 250 million shares of preferred stock, par value $.01 per share, including 500,000 shares of Series A junior participating preferred stock, of which no shares are currently issued or outstanding.
	From time to time, capital stock is issued in conjunction with the exercise of stock options and stock-settled stock appreciation rights and the vesting of restricted stock units issued as part of the Company's stock incentive plan (see Note 18).
	Share Repurchase Programs. The Company has two share repurchase programs in place, consisting of a $2 billion program that extends through December 31, 2016 (the “$2 Billion Program”), and a program that is intended to offset, on an ongoing basis, the dilution created by the Company's stock incentive plan for up to 1.5 million shares in 2014 and each subsequent year (the “Anti-Dilution Program”). The Anti-Dilution program does not have an expiration date. The Company is not obligated to repurchase any shares under either program.
	In the first quarter of 2014, the Company entered into an accelerated share repurchase (“ASR”) agreement with a third-party financial institution to repurchase the Company's common stock. Under the ASR agreement, the Company made an up-front payment of $400 million and received an initial delivery of approximately 3.9 million shares in the first quarter of 2014. Upon settlement in the third quarter of 2014, the Company received approximately 0.7 million additional shares, resulting in an overall weighted average price per share of $88.08 under the ASR agreement. Of the total number of shares repurchased, 1.5 million shares were purchased under the Anti-Dilution Program and approximately 3.1 million shares were purchased under the $2 Billion Program.
	Pursuant to the terms of the Merger Agreement with ZF, the Company is restricted from repurchasing additional shares of its common stock under the share repurchase programs without ZF's consent.

ShareBased_Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2014
Share-Based Compensation [Abstract]
Share-Based Compensation	18. Share-Based Compensation
	Equity Awards
	Effective in February 2003, the Company established the TRW Automotive Holdings Corp. 2003 Stock Incentive Plan (as amended, the “2003 Plan”), under which stock options, stock appreciation rights, and restricted stock units remain outstanding. Effective in May 2012, the Company's shareholders approved the TRW Automotive Holdings Corp. 2012 Stock Incentive Plan (the “2012 Plan” and, together with the 2003 Plan, the “Plan”). The 2012 Plan permits the grant of up to 6.15 million stock options, stock appreciation rights, restricted stock units and other stock-based awards to the employees, directors or consultants of the Company or its affiliates. As a result of the shareholders' approval of the 2012 Plan, no new awards will be granted under the 2003 Plan. Further, pursuant to the terms of the Merger Agreement with ZF, the Company is restricted from issuing additional equity awards under the Plan without ZF's consent although alternate non-equity based awards may be awarded.
	As of December 31, 2014, the Company had 3,379,736 shares of Common Stock available for issuance under the 2012 Plan. In addition, 214,663 stock options, 2,320,699 SSARs, 676,131 nonvested RSUs, 12,650 nonvested PSUs, and Performance Units under which up to 70,425 shares may be issued (based on maximum performance thereunder) were outstanding as of December 31, 2014. Under the terms of the respective grants, all of the SSARs and stock options have an 8-year term and vest ratably over three years, substantially all of the RSUs vest ratably over three years, a majority of the PSUs cliff vest after three years and Performance Units cliff vest after their three-year performance period. As a result of changes to retirement provisions in the equity award agreements beginning in 2013, the Company applies a non-substantive vesting period approach for certain of the awards granted in 2014 and 2013 whereby expense is accelerated for those employees who receive awards and are eligible to retire prior to the award vesting.
	The significant equity award grants during 2014, 2013 and 2012 are as follows:
			February 21,				February 22,				February 23,
			2014				2013				2012
			SSARs			RSUs	SSARs		RSUs		SSARs		RSUs
		Number Granted		850,900		284,723		1,199,551	428,169			1,282,518	515,523
		Grant date fair market value	$	82.5			$	58.2			$	45.11
		Maximum value	$	130			$	110			$	95
	The exercise price of the SSARs and stock options is equal to the fair market value under the applicable plan of the Company common stock on the grant date. For awards granted in 2014 and 2013, the fair market value is the closing stock price. For awards granted in 2012, the fair market value is calculated as the average of the high and low stock price.
	The total share-based compensation expense recognized for the Plan was as follows:
				Years Ended December 31,
				2014			2013			2012
				(Dollars in millions)
	SSARs and stock options			$	9		$	10		$	5
	RSUs				24			26			16
	Performance Units				3			-			-
		Total share-based compensation expense		$	36		$	36		$	21
	The Company uses historical data to estimate SSAR and option exercise and employee termination assumptions within the Black-Scholes option pricing valuation model. The expected volatilities are primarily developed using historical data of the Company. The expected life of SSARs and options granted represents the period of time that they are expected to be outstanding. The risk free rate is based on U.S. Treasury zero-coupon yield curves with a remaining term equal to the expected SSAR and option life.
	Fair value for SSARs was estimated at the date of grant using the Black-Scholes option pricing model using the following weighted-average assumptions:
			February 21,				February 22,			February 23,
			2014				2013			2012
		Expected volatility		61.10%				79.30%			79.30%
		Dividend yield		0.00%				0.00%			0.00%
		Expected life		5.0 years				5.0 years			5.0 years
		Risk-free rate		1.53%				0.83%			0.89%
	A summary of SSAR and stock option activity under the Plan and changes for the year ended December 31, 2014 is presented below:
										Weighted-
							Weighted-			Average
				Thousands of			Average			Remaining			Aggregate
				Options			Exercise			Contractual			Intrinsic
				and SSARs			Price			Term			Value
													(Dollars in millions)
		Outstanding as of January 1, 2014			3,572		$	47.88
		Granted			851			82.5
		Exercised			-1,786			45.89
		Forfeited or expired			-102			52.09
		Outstanding as of December 31, 2014			2,535			60.73			6		$	104
		Exercisable as of December 31, 2014			577		$	42.01			4.5		$	35
	The weighted-average grant-date fair value of SSARs granted during the years ended December 31, 2014, 2013 and 2012 was $9.29, $7.23, and $6.58, respectively. The total intrinsic value of SSARs and stock options exercised during the years ended December 31, 2014, 2013 and 2012 was $85 million, $57 million and $26 million, respectively.
	A summary of the status of the Company's nonvested RSUs as of December 31, 2014, and changes during the year ended December 31, 2014, is presented below:
							Weighted-
				Thousands of			Average
				Restricted			Grant-Date
				Stock Units			Fair Value
		Nonvested Units
		Nonvested as of January 1, 2014			805		$	52.96
		Granted			299			82.44
		Vested			-384			52.36
		Forfeited			-44			59.66
		Nonvested as of December 31, 2014			676		$	65.92
	In addition, 142,911 of the outstanding RSUs are applicable to retirement eligible employees as of December 31, 2014.
	The total fair value of RSUs vested and distributed during the years ended December 31, 2014, 2013 and 2012 were $32 million, $26 million and $22 million, respectively.
	As of December 31, 2014, there was $24 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan. Such cost is expected to be recognized over a weighted-average period of approximately two years.
	Potential Impact of the ZF Merger on Equity Awards
	If consummated, at the effective time of the ZF Merger, (i) all then-outstanding Company stock options, RSUs, PSUs and Performance Units (which will vest at the “maximum level” of performance), whether vested or unvested, will be converted into the right to receive the Merger Consideration, less the exercise price of such awards, if any, and (ii) all then-outstanding Company SSARs, whether vested or unvested, will be converted into the right to receive an amount in cash equal to the excess of the lesser of the Merger Consideration and the “maximum value” of such SSAR over the fair market value per share at the relevant grant date.
	Cash Awards
	For the years ended December 31, 2014, 2013 and 2012, the Company recognized compensation expense associated with its cash-settled share-based compensation and retention awards of de minimis, $1 million and $4 million, respectively. During 2014, the final tranche of the cash incentive awards granted in 2011 were paid to fully satisfy the obligation for these awards.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Contingencies	19. Contingencies
	Various claims, lawsuits and administrative proceedings are pending or threatened against the Company or its subsidiaries, covering a wide range of matters that arise in the ordinary course of the Company's business activities with respect to commercial, patent, product liability, environmental and occupational safety and health law matters. In addition, the Company and its subsidiaries are conducting a number of environmental investigations and remedial actions at current and former locations of certain of the Company's subsidiaries. Along with other companies, certain subsidiaries of the Company have been named potentially responsible parties for certain waste management sites. Each of these matters is subject to various uncertainties, and some of these matters may be resolved unfavorably with respect to the Company or the relevant subsidiary. A reserve estimate for each environmental matter is established using standard engineering cost estimating techniques on an undiscounted basis. In the determination of such costs, consideration is given to the professional judgment of Company environmental engineers, in consultation with outside environmental specialists, when necessary. At multi-party sites, the reserve estimate also reflects the expected allocation of total project costs among the various potentially responsible parties.
	As of December 31, 2014, and 2013, the Company had reserves for environmental matters of $71 million and $68 million, respectively. In addition, the Company has established a receivable for a portion of this environmental liability as a result of its right to indemnification for 50% of any environmental liabilities associated with the operation or ownership of the Company's automotive business existing at or prior to March 2003. The Company believes any liability, in excess of amounts accrued in its financial statements, that may result from the resolution of environmental matters for which sufficient information is available to support these cost estimates, will not have a material adverse effect on the Company's financial position, results of operations or cash flows.
	The Company faces an inherent business risk of exposure to product liability, recall and warranty claims in the event that its products actually or allegedly fail to perform as expected or the use of its products results, or is alleged to result, in bodily injury and/or property damage. Accordingly, the Company could experience material warranty, recall or product liability losses in the future. For further information, including quantification of the Company's product warranty liability, see the description of “Warranties” in Note 3.
	While certain of the Company's subsidiaries have been subject in recent years to asbestos-related claims, management believes that such claims will not have a material adverse effect on the Company's financial statements. In general, these claims seek damages for illnesses alleged to have resulted from exposure to asbestos used in certain components sold in the past by the Company's subsidiaries. Management believes that the majority of the claimants were vehicle mechanics. The vast majority of these claims name as defendants numerous manufacturers and suppliers of a variety of products allegedly containing asbestos. Management believes that, to the extent any of the products sold by the Company's subsidiaries and at issue in these cases contained asbestos, the asbestos was encapsulated. Based upon several years of experience with such claims, management believes that only a small proportion of the claimants has or will ever develop any asbestos-related illness.
	Neither settlement costs in connection with asbestos claims nor annual legal fees to defend these claims have been material in the past. These claims are strongly disputed by the Company and it has been its policy to defend against them aggressively. Many of these cases have been dismissed without any payment whatsoever. Moreover, there is significant insurance coverage with solvent carriers with respect to these claims. However, while costs to defend and settle these claims in the past have not been material, there can be no assurances that this will remain so in the future.
	Management believes that the ultimate resolution of the foregoing contingencies will not have a material effect on the Company's financial statements as a whole.
	Antitrust Matters
	Antitrust authorities, including those in the United States and Europe, are investigating possible violations of competition (antitrust) laws by automotive parts suppliers (referred to herein as the “Antitrust Investigations”). The U.S. Department of Justice (“DOJ”) initiated an investigation into the Company's Occupant Safety Systems business in June 2011, which was concluded in 2012 when the court approved a plea agreement between one of the Company's German subsidiaries and the DOJ. Also in June 2011, the European Commission initiated an Antitrust Investigation which includes the Company, among others, and which is ongoing. While the duration and outcome of the European Commission's investigation is uncertain, a determination that the Company has violated European competition (antitrust) laws could result in significant penalties which could have a material adverse effect on its financial condition, results of operations and cash flows, as well as its reputation. While the Company cannot estimate the ultimate financial impact resulting from the European investigation, it will continue to evaluate developments in this matter on a regular basis and will record an accrual as and when appropriate.
	The Company's policy is to comply with all laws and regulations, including all antitrust and competition laws. The Company is cooperating fully with the competition authorities in the context of their ongoing investigations.
	The Company has settled, for amounts that are immaterial to the Company, certain purported class action lawsuits filed on behalf of vehicle purchasers, lessors, dealers, and direct purchasers alleging that the Company and certain of its competitors conspired to fix and raise prices for Occupant Safety Systems products. These lawsuits were filed on various dates from June 2012 through May 2014 in, or were consolidated in, the United States District Court for the Eastern District of Michigan. Once the court approves the settlements, those cases will be dismissed. The Company has also settled, for an amount that is immaterial to the Company, similar cases filed in various courts in Canada on behalf of vehicle purchasers, lessors, dealers and direct purchasers.
	Transaction Litigation
	Following the announcement of the execution of the Merger Agreement on September 15, 2014, the Company, members of our board of directors, ZF, Merger Sub and others have been named as defendants in one or more of the purported class actions filed by purported stockholders of the Company challenging the proposed ZF Merger. The actions seek, among other forms of relief, an order enjoining the ZF Merger, rescinding the Merger Agreement to the extent it has already been implemented, and awarding attorneys' fees and costs. On November 12, 2014, plaintiffs, the Company and other named defendants entered into a memorandum of understanding (the “MOU”) agreeing in principle to settle all pending actions in exchange for the Company's agreement to make certain supplemental disclosures, which were filed on the same date in a supplement to TRW's October 20, 2014 definitive proxy statement.  Pursuant to the MOU, the parties intend to settle, subject to court approval, certain claims, while the other pending litigation will be dismissed.  The Company anticipates the litigation will be resolved and will not interfere with or delay the closing, but until court approval is obtained and the cases are dismissed, some uncertainty remains.  The settlement contemplated by the MOU is not, and should not be construed as, an admission of wrongdoing or liability by any defendant.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Segment Information	20. Segment Information
	The Company is a U.S.-based international business providing advanced technology products and systems for the automotive markets. The Company has four reportable segments: Chassis Systems, Occupant Safety Systems, Electronics and Automotive Components.
	The principal customers for the Company's automotive products are the North American, European and Asian vehicle manufacturers.
	Segment Information. The Company designs, manufactures and sells a broad range of steering, suspension and braking products, seat belts, airbags, steering wheels, safety electronics, engine valves, engineered fasteners, body control systems, and other components and systems for passenger cars, light trucks and commercial vehicles. A description of the products and services provided by each of the segments follows.
	Chassis Systems — Active safety systems and other systems and components in the area of foundation brakes, anti-lock braking systems and other brake control systems (including electronic vehicle stability control), steering gears and systems (including electric power steering), linkage and suspension and modules.
	Occupant Safety Systems — Passive safety systems and components in the areas of airbags, seat belts and steering wheels.
	Electronics — Safety, radio frequency, chassis, and powertrain electronics and camera- and radar-based driver assistance systems.
	Automotive Components — Body controls, engine valves, and engineered fasteners and plastic components (see Note 4).
	The accounting policies of the segments are the same as those described in Note 3 under “Summary of Significant Accounting Policies.” The Company evaluates operating performance based on segment earnings before taxes and segment assets.
	The following income and expense items are not included in segment earnings before taxes:
	•       Corporate expense and other, which primarily represents costs associated with corporate staff and related expenses, including certain litigation and net employee benefits income (expense).
	•       Financing costs, which represents debt-related interest and accounts receivable securitization costs.
	•       Gain (loss) on retirement of debt.
	The following tables present certain financial information by segment:
				Years Ended December 31,
				2014			2013			2012
				(Dollars in millions)
	Sales to external customers:
		Chassis Systems		$	11,354		$	11,492		$	10,685
		Occupant Safety Systems			3,357			3,314			3,287
		Electronics			937			721			654
		Automotive Components			1,891			1,908			1,818
	Total sales to external customers			$	17,539		$	17,435		$	16,444
	Intersegment sales:
		Chassis Systems		$	16		$	14		$	20
		Occupant Safety Systems			139			130			90
		Electronics			609			543			514
		Automotive Components			74			75			80
	Total intersegment sales			$	838		$	762		$	704
	Total segment sales:
		Chassis Systems		$	11,370		$	11,506		$	10,705
		Occupant Safety Systems			3,496			3,444			3,377
		Electronics			1,546			1,264			1,168
		Automotive Components			1,965			1,983			1,898
	Total segment sales			$	18,377		$	18,197		$	17,148
	Earnings before taxes:
		Chassis Systems		$	831		$	841		$	669
		Occupant Safety Systems			282			239			254
		Electronics			144			126			132
		Automotive Components			168			150			115
	Segment earnings before taxes				1,425			1,356			1,170
	Corporate expense and other				-920			-120			-78
	Interest expense — net				-109			-132			-111
	Loss on retirement of debt — net				-7			-20			-6
	Net earnings attributable to noncontrolling interest, net of tax				41			37			33
		Earnings before income taxes		$	430		$	1,121		$	1,008
	Capital expenditures:
		Chassis Systems		$	418		$	461		$	364
		Occupant Safety Systems			118			112			104
		Electronics			70			80			61
		Automotive Components			76			77			86
		Corporate			12			5			8
				$	694		$	735		$	623
	Depreciation and amortization:
		Chassis Systems		$	250		$	243		$	228
		Occupant Safety Systems			83			79			80
		Electronics			51			42			38
		Automotive Components			55			63			60
		Corporate			5			3			3
				$	444		$	430		$	409
	The Company accounts for intersegment sales or transfers at current market prices.
	The following table presents certain balance sheet information by segment:
					December 31,
					2014			2013
				(Dollars in millions)
Segment assets:
	Chassis Systems			$	5,842		$	5,632
	Occupant Safety Systems				2,024			2,162
	Electronics				1,247			1,019
	Automotive Components				803			852
		Segment assets			9,916			9,665
	Corporate assets				812			2,047
		Segment and corporate assets			10,728			11,712
Deferred tax assets					566			540
Total assets				$	11,294		$	12,252
Corporate assets principally consist of cash and cash equivalents and pension assets.
Geographic Information. The following table presents certain information concerning principal geographic areas:
			United									Rest of
			States			China			Germany			World			Total
			(Dollars in millions)
Sales to external customers:
	Year Ended December 31, 2014		$	4,496		$	3,131		$	2,097		$	7,815		$	17,539
	Year Ended December 31, 2013			4,992			2,758			2,199			7,486			17,435
	Year Ended December 31, 2012			4,713			2,201			2,330			7,200			16,444
Property, plant and equipment - net:
	As of December 31, 2014		$	567		$	565		$	394		$	1,119		$	2,645
	As of December 31, 2013			534			478			430			1,276			2,718
	As of December 31, 2012			563			357			403			1,062			2,385
Sales are attributable to geographic areas based on the location of the assets generating the sales. Inter-area sales are not significant to the total sales of any geographic area.
Customer Concentration. Sales to the Company's largest-end-customers (including sales within the vehicle manufacturer's group) on a worldwide basis are as follows:
									Fiat
						Ford			Chrysler					Aggregate
			Volkswagen				Motor		Automobiles		General			Percent of
			AG			Company			N.V.(a)		Motors			Total Sales
			(Dollars in millions)
	Year Ended December 31, 2014		$	4,525		$	3,210		$	2,368	$	1,288			64.90%
	Year Ended December 31, 2013			4,298			3,234			2,359		1,757			66.80%
	Year Ended December 31, 2012			3,863			2,897			2,290		1,649			65.10%
(a)	Effective in 2014, Fiat Chrysler Automobiles N.V. includes FCA US LLC (formerly known as Chrysler Group LLC), which was shown on a standalone basis for the years ended 2013 and 2012.

Unconsolidated_Affiliates

Unconsolidated Affiliates	12 Months Ended
	Dec. 31, 2014
Unconsolidated Affiliates [Abstract]
Unconsolidated Affiliates [Text Block]	21. Unconsolidated Affiliates
	As of December 31, 2014 and 2013, the Company's investment in affiliates was $231 million and $207 million, respectively.
	The Company's beneficial ownership in affiliates accounted for under the equity method follows:
				As of December 31,
				2014		2013		2012
		SM-Sistemas Modulares Ltda. (Brazil)			50%		50%		50%
		ABC Sistemas E Modulos Ltda. (Brazil)			33%		33%		33%
		CSG TRW Chassis Systems Co., Ltd. (China)			50%		50%		50%
		Shanghai TRW Automotive Safety Systems Company Ltd. (China)			50%		50%		50%
		Shin-Han (Beijing) Automobile Parts System Co., Ltd (China)(a)			30%		30%		30%
		Fuji Valve (Guangdong) Co., Ltd. (China)(a)			25%		25%		25%
		TH Braking Company S.A.S. (France)			50%		50%		50%
		Rane TRW Steering Systems Limited (India)			50%		50%		50%
		Brakes India Limited (India)			49%		49%		49%
		TRW Sun Steering Wheels Private Limited (India)			49%		49%		49%
		Evercast, S.A. de C.V. (Mexico)			30%		-		-
		Shin Han Valve Industrial Company, Ltd. (South Korea)(a)			25%		25%		25%
		Componentes Venezolanos de Direccion, S.A. (Venezuela)(a)			40%		40%		40%
		(a)	These affiliates are classified as held-for-sale (see Note 4).

Quarterly_Financial_Informatio

Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information (Unaudited) [Abstract]
Quarterly Financial Information (Unaudited) [Text Block]	22. Quarterly Financial Information (Unaudited)
			For the 2014 Quarter Ended								For the 2013 Quarter Ended
			28-Mar		27-Jun		26-Sep		31-Dec		29-Mar		28-Jun		27-Sep		31-Dec
			(Dollars in millions, except per share amounts)
	Sales		$	4,442	$	4,593	$	4,156	$	4,348	$	4,213	$	4,514	$	4,212	$	4,496
		Gross profit		500		567		475		524		427		531		450		522
	Pension and postretirement benefit settlement and curtailment expenses			-		-		-		790		-		-		-		31
	Restructuring charges and asset impairments			20		6		10		48		37		1		5		23
	Loss on retirement of debt - net			-		-		-		7		-		5		-		15
		Earnings (loss) before income taxes		287		367		278		-502		235		357		268		261
		Net earnings (loss) attributable to TRW		199		265		189		-360		162		248		197		363
	Basic earnings (loss) per share		$	1.76	$	2.39	$	1.7	$	-3.22	$	1.35	$	2.09	$	1.68	$	3.15
	Diluted earnings (loss) per share		$	1.68	$	2.27	$	1.61	$	-3.22	$	1.29	$	1.99	$	1.6	$	3

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	SCHEDULE II
	Valuation and Qualifying Accounts for
	the years ended December 31, 2014, 2013 and 2012
						Charged
		Balance at		Charged to		(Credited)				Balance at
		Beginning		Costs and		to Other				End of
		of Period		Expenses		Accounts		Deductions		Period
		(Dollars in millions)
	Year ended December 31, 2014
	Allowance for doubtful accounts	$	29	$	4	$	-	$	(7)(a)	$	26
	Deferred tax asset valuation allowance		295		7		-28		-		274
	Year ended December 31, 2013
	Allowance for doubtful accounts	$	30	$	4	$	-	$	(5)(a)	$	29
	Deferred tax asset valuation allowance		250		17		28		-		295
	Year ended December 31, 2012
	Allowance for doubtful accounts	$	38	$	-1	$	-	$	(7)(a)	$	30
	Deferred tax asset valuation allowance		273		-63		40		-		250
	____________
	(a) Uncollectible accounts written off, net of recoveries.
	The other schedules have been omitted because they are not applicable or are not required or the information to be set forth therein is included in the Consolidated Financial Statements or notes thereto.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Basis of Presentation and Summary of Significant Acconting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements reflect the financial position and operating results of the Company, including wholly owned subsidiaries and investees that the Company controls. Investments in entities that the Company does not control, but has the ability to exercise significant influence over operating and financial policies, are accounted for under the equity method. Investments in entities in which the Company does not have the ability to exercise significant influence are accounted for under the cost method. Noncontrolling interests in consolidated subsidiaries in the consolidated balance sheets represent minority stockholders' proportionate share of the equity in such subsidiaries. All intercompany transactions and balances are eliminated in consolidation.
Use of Estimates	Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities and reported amounts of revenues and expenses in the consolidated statements of earnings. Considerable judgment is often involved in making these determinations; the use of different assumptions could result in significantly different results. Management believes its assumptions and estimates are reasonable and appropriate. However, actual results could differ from those estimates.
Foreign Currency	Foreign Currency. The financial statements of foreign subsidiaries are translated to U.S. dollars at end-of-period exchange rates for assets and liabilities and at an average exchange rate for each period for revenues and expenses. Translation adjustments for those subsidiaries whose local currency is their functional currency are recorded as a component of accumulated other comprehensive earnings (losses) in stockholders' equity. Transaction gains and losses arising from fluctuations in foreign currency exchange rates on transactions denominated in currencies other than the functional currency are recognized in earnings as incurred, except for those transactions which hedge purchase commitments and for those intercompany balances which are designated as being of a long-term investment nature.
Revenue Recognition	Revenue Recognition. Sales are recognized when there is persuasive evidence of a sales agreement, the delivery of goods has occurred, the sales price is fixed or determinable and collection of related billings is reasonably assured. Sales are recorded upon shipment of product to customers and transfer of title and risk of loss under standard commercial terms (typically F.O.B. shipping point). In those limited instances where other terms are negotiated and agreed, revenue is recorded when title and risk of loss are transferred to the customer.
Earnings per Share	Earnings per Share. Basic earnings per share are calculated by dividing net earnings by the weighted average shares outstanding during the period. Diluted earnings per share reflect the weighted average impact of all potentially dilutive securities from the date of issuance, including stock options, RSUs, SSARs and Performance Units. Further, if the inclusion of shares potentially issuable for the Company's 3.50% exchangeable senior unsecured notes (see Note 13) is more dilutive than the inclusion of the interest expense for those exchangeable notes, the Company utilizes the “if-converted” method to calculate diluted earnings per share. Under the if-converted method, the Company adjusts net earnings to add back interest expense and amortization of the discount recognized on the exchangeable notes and includes the number of shares potentially issuable related to the exchangeable notes in the weighted average shares outstanding.
	If the average market price of the Company's common stock exceeds the exercise price of stock options outstanding or the grant date fair market value per share of the Company's stock for SSARs, the treasury stock method is used to determine the incremental number of shares to be included in the diluted earnings per share computation.
Cash and Cash Equivalents	Cash and Cash Equivalents. Cash and cash equivalents include all highly liquid investments with remaining maturity dates of three months or less at time of purchase.
Accounts Receivable	Accounts Receivable. Receivables are stated at amounts estimated by management to be the net realizable value. An allowance for doubtful accounts is recorded when it is probable amounts will not be collected based on specific identification of customer circumstances or age of the receivable. The allowance for doubtful accounts was $26 million and $29 million as of December 31, 2014 and 2013, respectively. Accounts receivable are written off when it becomes apparent such amounts will not be collected. Collateral is not typically required, nor is interest charged on accounts receivable balances.
Inventories	Inventories. Inventories are stated at the lower of cost or market, with cost determined by the first-in, first-out (FIFO) method. Cost includes the cost of materials, direct labor, in-bound freight and the applicable share of manufacturing overhead.
Property, Plant and Equipment	Property, Plant and Equipment. Property, plant and equipment are stated at cost less accumulated depreciation. Generally, estimated useful lives are as follows:
		Estimated
		Useful Lives
	Buildings	30 to 40 years
	Machinery and equipment	5 to 10 years
	Computers and capitalized software	3 to 5 years
	Depreciation is computed over the assets' estimated useful lives, using the straight-line method for the majority of depreciable assets. Amortization expense for assets held under capital leases is included in depreciation expense.
Product Tooling	Product Tooling. Product tooling is tooling that is limited to the manufacture of a specific part or parts of the same basic design. Product tooling includes dies, patterns, molds and jigs. Customer-owned tooling for which reimbursement was contractually guaranteed by the customer is classified in other assets on the consolidated balance sheets. When contractually guaranteed charges are approved for billing to the customer, such charges are reclassified into accounts receivable. Tooling owned by the Company is capitalized as property, plant and equipment, and amortized as cost of sales over its estimated economic life, not to exceed five years.
Pre-production Costs	Pre-production Costs. Pre-production engineering and research and development costs for which the customer does not contractually guarantee reimbursement are expensed as incurred.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets. The Company performs either a quantitative or qualitative assessment of goodwill for impairment on an annual basis or more frequently if an event occurs or circumstances indicate the carrying amount may be impaired. Goodwill impairment testing is performed at the reporting unit level. To quantitatively test goodwill for impairment, the fair value of each reporting unit is determined and compared to the carrying value. If the carrying value exceeds the fair value, then impairment may exist and further evaluation is required. The qualitative assessment considers several factors at the reporting unit level including the excess of fair value over carrying value as of the last quantitative impairment test, the length of time since the last fair value measurement, the current carrying value, market and industry metrics, actual performance compared to forecasted performance, and our current outlook on the business. If the qualitative assessment indicates it is more likely than not that goodwill is impaired, the reporting unit is quantitatively tested for impairment.
	Other indefinite-lived intangible assets are subject to impairment analysis annually. Indefinite-lived intangible assets are tested for impairment by comparing the fair value to the carrying value. If the carrying value exceeds the fair value, the asset is adjusted to fair value. Definite-lived intangible assets are amortized over their estimated useful lives, and tested for impairment in accordance with the methodology discussed in “Asset Impairment Losses.”
Asset Impairment Losses	Asset Impairment Losses. Asset impairment losses are recorded on long-lived assets and definite-lived intangible assets when events and circumstances indicate that such assets may be impaired and the projected undiscounted net cash flows to be generated by those assets are less than their carrying amounts. If estimated future undiscounted cash flows are not sufficient to recover the carrying value of the assets, the assets are adjusted to their fair values. Fair value is determined using appraisals or discounted cash flow calculations.
Environmental Costs	Environmental Costs. Costs related to environmental assessments and remediation efforts at current operating facilities, previously owned or operated facilities, and U.S. Environmental Protection Agency Superfund or other waste site locations are accrued when it is probable that a liability has been incurred and the amount of that liability can be reasonably estimated. Estimated costs are recorded at undiscounted amounts, based on experience and assessments, and are regularly evaluated. The liabilities are recorded in other current liabilities and long-term liabilities in the consolidated balance sheets.
Debt Issuance Costs	Debt Issuance Costs. The costs related to the issuance of long-term debt are deferred and amortized into interest expense over the life of each respective debt issuance. Deferred amounts associated with debt extinguished prior to maturity are expensed upon extinguishment as a loss on retirement of debt.
Warranties	Warranties. Product warranty liabilities are recorded based upon management estimates including such factors as the written agreement with the customer, the length of the warranty period, the historical performance of the product and likely changes in performance of newer products and the mix and volume of products sold. Product warranty liabilities are reviewed on a regular basis and adjusted to reflect actual experience.
Product Recall	Product Recall. Recall costs typically include the cost of the product being replaced, customer cost of the recall and labor to remove and replace the defective part.  Recall costs are recorded based on management estimates developed utilizing actuarially established loss projections based on historical claims data. Based on this actuarial estimation methodology, the Company accrues for expected but unannounced recalls when revenues are recognized upon the shipment of product. In addition, as recalls are announced, the Company reviews the actuarial estimation methodology and makes the appropriate adjustments to the accrual, if necessary.
Research and Development	Research and Development. Research and development programs include research and development for commercial products. Costs for such programs are expensed as incurred. Any reimbursements received from customers are netted against such expenses. Research and development expenses were $230 million, $193 million, and $164 million for the years ended December 31, 2014, 2013, and 2012, respectively.
Shipping and Handling	Shipping and Handling. Shipping costs include payments to third-party shippers to move products to customers. Handling costs include costs from the point the products were removed from finished goods inventory to when provided to the shipper. Shipping and handling costs are expensed as incurred as cost of sales.
Income Taxes	Income Taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is recognized to reduce the deferred tax assets to the amount management believes is more likely than not to be realized.
Financial Instruments	Financial Instruments. Gains or losses on derivative instruments that have been designated and qualify as hedges of the exposure to changes in the fair value of an asset or a liability, as well as the offsetting gain or loss on the hedged item, are recognized in net earnings during the period of the change in fair values. For derivative instruments that have been designated and qualify as hedges of the exposure to variability in expected future cash flows, the gain or loss on the derivative is initially reported as a component of other comprehensive earnings and reclassified to the consolidated statements of earnings when the underlying hedged transaction affects net earnings. Any gain or loss on the derivative in excess of the cumulative change in the present value of future cash flows of the hedged item is recognized in net earnings during the period of change. Derivatives not designated as hedges are adjusted to fair value through net earnings.
Share-based Compensation	Share-based Compensation. The Company recognizes compensation expense related to Performance Units subject to cliff vesting and time-vested stock options, SSARs, and RSUs subject to graded vesting using the straight-line method over the applicable service period. Share-based awards that are settled in cash are subject to liability accounting. Accordingly, the fair value for such awards is calculated on a quarterly basis, and the liability is adjusted and expense is recognized, based on changes to the percentage of time vested.
Recently Adopted Accounting Pronouncements	Recently Adopted or Issued Accounting Pronouncements. In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (''ASU'') No. 2014-08, ''Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity,” which changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. Under the new guidance, discontinued operations and assets held for sale represent a strategic shift that has or will have a major effect on an entity's operations and financial results. The Company adopted this guidance during the second quarter of 2014 and applied it prospectively to new disposals and new classifications of disposal groups as held for sale. The adoption of this guidance had no impact on the Company's financial statements.
	In May 2014, the FASB issued ASU No. 2014-09, ''Revenue from Contracts with Customers (Topic 606),'' which provides a single revenue recognition model intended to improve comparability over a range of industries, companies and geographical boundaries and is intended to enhance disclosures. The standard is effective retrospectively for fiscal years (and interim reporting periods within those years) beginning after December 15, 2016. Early adoption is not permitted. The Company continues to assess the potential impact on its operations and financial statements.

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Basis of Presentation and Summary of Significant Acconting Policies [Abstract]
Net Earnings (Losses) Attributable to TRW and Weighted Average Shares Outstanding	Net earnings attributable to TRW and the weighted average shares outstanding used in calculating basic and diluted earnings per share were:
				Years Ended December 31,
				2014			2013				2012
				(In millions, except per share amounts)
		Net earnings attributable to TRW		$	293		$	970		$	1,008
		Interest expense on exchangeable notes, net of tax			3			4			4
		Amortization of discount on exchangeable notes, net of tax			4			4			4
		Net earnings attributable to TRW for purposes of calculating diluted earnings per share		$	300		$	978		$	1,016
		Basic:
			Weighted average shares outstanding		111.7			117.6			122.4
			Basic earnings per share	$	2.62		$	8.25		$	8.24
		Diluted:
			Weighted average shares outstanding		111.7			117.6			122.4
			Effect of dilutive stock options, RSUs and SSARs		1.6			1.3			1.4
			Shares applicable to exchangeable notes		4.7			5.7			5.9
			Diluted weighted average shares outstanding		118			124.6			129.7
			Diluted earnings per share	$	2.54		$	7.85		$	7.83
Property, Plant and Equipment Estimated Useful Lives				Estimated
				Useful Lives
	Buildings			30 to 40 years
	Machinery and equipment			5 to 10 years
	Computers and capitalized software			3 to 5 years
Movement in Product Warranty Liability		The following table presents the movement in the product warranty liability for the periods indicated:
				Years Ended December 31,
				2014			2013
				(Dollars in millions)
		Beginning balance		$	152		$	140
		Current period accruals, net of changes in estimates			53			58
		Liabilities held-for-sale			-2			-
		Used for purposes intended			-40			-47
		Effects of foreign currency translation			-9			1
		Ending balance		$	154		$	152
Components of Accumulated Other Comprehensive Earnings (Losses)						Foreign Currency Translation			Retirement Obligations			Deferred Cash Flow Hedges		Total
						(Dollars in millions)
	For the year ended December 31, 2014:
	Beginning balance attributable to TRW, net of tax					$	41		$	-405		$	-16	$	-380
			Other comprehensive earnings (losses) before reclassifications, net of tax				-266			-96			-1		-363
			Amounts reclassified from accumulated other comprehensive earnings (losses), net of tax				-			-(a)			4		4
	Other comprehensive earnings (losses), net of tax						-266			-96			3		-359
	Ending balance attributable to TRW, net of tax					$	-225		$	-501		$	-13	$	-739
	For the year ended December 31, 2013:
	Beginning balance attributable to TRW, net of tax					$	83		$	-559		$	10	$	-466
			Other comprehensive earnings (losses) before reclassifications, net of tax				-42			134			-25		67
			Amounts reclassified from accumulated other comprehensive earnings (losses), net of tax				-			20(b)			-1		19
	Other comprehensive earnings (losses), net of tax						-42			154			-26		86
	Ending balance attributable to TRW, net of tax					$	41		$	-405		$	-16	$	-380
	(a)		Includes actuarial gains of $12 million, reduced by prior service cost of $12 million, net of de minimis tax.
	(b)		Includes actuarial gains of $46 million, reduced by prior service cost of $17 million, net of tax of $9 million.

Assets_Held_for_Sale_Tables

Assets Held for Sale (Tables)	12 Months Ended
	Dec. 31, 2014
Assets Held for Sale [Abstract]
Schedule of Assets and Liabilities Held for Sale [Table Text Block]					As of
					31-Dec-14
					(Dollars in millions)
		Cash			$	10
		Accounts receivable — net				23
		Inventories				44
		Prepaid expenses and other current assets				6
		Property, plant and equipment — net				158
		Other assets				11
			Total assets held-for-sale		$	252
		Trade accounts payable			$	24
		Accrued compensation				15
		Other current liabilities				24
		Pension and defined contribution benefits				41
			Total liabilities related to assets held-for-sale		$	104
	Earnings before income taxes for the engine valve business were as follows:
				Years Ended December 31,
				2014			2013		2012
				(Dollars in millions)
	Earnings before income taxes			$	47		$	39	$	42
	Less: Earnings attributable to noncontrolling interest				4			5		3
		Earnings before income taxes attributable to TRW		$	43		$	34	$	39

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2014
Inventories [Abstract]
Major Classes of Inventory	5. Inventories
		The major classes of inventory are as follows:
				As of December 31,
				2014		2013
				(Dollars in millions)
		Finished products and work in process		$	470	$	499
		Raw materials and supplies			502		520
			Total inventories	$	972	$	1,019

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Major Classes of Property, Plant and Equipment	7. Property, Plant and Equipment
		The major classes of property, plant and equipment are as follows:
				As of December 31,
				2014		2013
				(Dollars in millions)
		Property, plant and equipment:
			Land and improvements	$	174	$	213
			Buildings		752		831
			Machinery and equipment		5,682		5,985
			Computers and capitalized software		102		109
					6,710		7,138
		Accumulated depreciation and amortization:
			Land and improvements		-27		-33
			Buildings		-377		-416
			Machinery and equipment		-3,583		-3,879
			Computers and capitalized software		-78		-92
					-4,065		-4,420
		Total property, plant and equipment - net		$	2,645	$	2,718
	Depreciation expense was $440 million, $416 million, and $397 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets [Abstract]
Changes in Goodwill [Table Text Block]	The changes in goodwill are as follows:
						Occupant
			Chassis			Safety						Automotive
			Systems			Systems			Electronics			Components
			Segment			Segment			Segment			Segment			Total
			(Dollars in millions)
	Balance as of December 31, 2012		$	796		$	537		$	423		$	-		$	1,756
	Allocation of goodwill due to change in segment reporting			275			-			-275			-			-
	Effects of foreign currency translation			-			4			-			-			4
	Balance as of December 31, 2013			1,071			541			148			-			1,760
	Effects of foreign currency translation			-1			-10			-			-			-11
	Balance as of December 31, 2014		$	1,070		$	531		$	148		$	-		$	1,749
Intangible Assets and Related Accumulated Amortization		The following table reflects intangible assets and related accumulated amortization:
				As of December 31,
				2014									2013
				Gross						Net			Gross					Net
				Carrying			Accumulated			Carrying			Carrying			Accumulated		Carrying
				Amount			Amortization			Amount			Amount			Amortization		Amount
					(Dollars in millions)
	Definite-lived intangible assets:
		Customer relationships		$	67		$	-67		$	-		$	67		$	-67	$	-
		Developed technology and other intangible assets			120			-93			27			119			-91		28
	Total				187		$	-160			27			186		$	-158		28
	Indefinite-lived intangible assets:
		Trademarks			264						264			264					264
	Total			$	451					$	291		$	450				$	292
Weighted Average Amortization Periods for Intangible Assets Subject to Amortization	Customer relationships and developed technology have been fully amortized. The weighted average amortization periods for other intangible assets subject to amortization are as follows:
				Weighted Average
				Amortization Period
		Other intangible assets		9 years
Expected Amortization Expense	The Company expects that ongoing amortization expense for other intangibles will approximate the following:
				(Dollars in millions)
		Fiscal year 2015		$	3
		Fiscal year 2016			1
		2017 and beyond			23
	The expected amortization expense for 2017 and beyond primarily relates to land use rights

Other_Income_Expense_Net_Table

Other (Income) Expense - Net (Tables)	12 Months Ended
	Dec. 31, 2014
Other Expense (Income) - Net [Abstract]
Details of Other (Income) Expense, Net	9. Other Expense (Income) - Net
		The following table provides details of other expense (income) - net:
				Years Ended December 31,
				2014		2013		2012
				(Dollars in millions)
		Net provision for bad debts		$	4	$	4	$	-1
		Net gains on sales of assets and divestitures			-		-		-6
		Foreign currency exchange losses			8		17		2
		Royalty and grant income			-22		-19		-18
		Miscellaneous other expense (income)			12		-3		-14
			Other expense (income) - net	$	2	$	-1	$	-37

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Expense	10. Income Taxes
		Income tax expense (benefit) for each of the periods presented is as follows:
						Years Ended December 31,
						2014			2013		2012
						(Dollars in millions)
		The components of earnings before income taxes are as follows:
		U.S.				$	195		$	331	$	464
		Non-U.S.					235			790		544
						$	430		$	1,121	$	1,008
		Significant components of the provision for income taxes are as follows:
		Current
			Non-U.S.			$	190		$	161	$	169
			U.S. State and Local				-			-		2
				Total current			190			161		171
		Deferred
			U.S. Federal				30			-39		-98
			Non-U.S.				-127			-1		-97
			U.S. State and Local				3			-7		-9
				Total deferred			-94			-47		-204
		Income tax expense (benefit)				$	96		$	114	$	-33
		The reconciliation of income taxes calculated at the U.S. federal statutory income tax rate of 35% to income tax expense (benefit) is:
		Income taxes at U.S. statutory rate				$	150		$	392	$	353
		U.S. state and local income taxes net of U.S. federal tax benefit					3			-6		-7
		Difference in income tax on foreign earnings, losses and remittances					5			-23		-197
		Tax holidays and incentives					-28			-32		-38
		Valuation allowance					7			17		-63
		Foreign and other tax credits					-47			-196		-82
		Impact of tax legislation					-3			-43		-9
		Nondeductible expenses					9			8		12
		Other					-			-3		-2
						$	96		$	114	$	-33
Deferred Tax Assets and Liabilities					As of December 31,
					2014			2013
					(Dollars in millions)
		Deferred tax assets:
		Pensions and postretirement benefits other than pensions			$	274		$	218
		Inventory				40			41
		Reserves and accruals				315			327
		Net operating loss and credit carryforwards				617			682
		Fixed assets and intangibles				65			58
		Other				73			69
			Total deferred tax assets			1,384			1,395
		Valuation allowance for deferred tax assets				-274			-295
		Net deferred tax assets				1,110			1,100
		Deferred tax liabilities:
		Pensions and postretirement benefits other than pensions				-100			-200
		Fixed assets and intangibles				-282			-266
		Undistributed earnings of foreign subsidiaries				-104			-116
		Deferred gain				-56			-59
		Other				-63			-81
			Total deferred tax liabilities			-605			-722
		Net deferred taxes			$	505		$	378
Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits						2014			2013		2012
						(Dollars in millions)
		Balance, January 1,				$	176		$	160	$	148
			Additions based on tax positions related to the current year				16			14		12
			Additions for tax positions of prior years				8			32		40
			Reductions for tax positions of prior years				-7			-28		-23
			Reductions for settlements				-7			-1		-17
			Reductions due to lapse in statute of limitations				-8			-3		-3
			Change attributable to foreign currency translation				-10			2		3
		Balance, December 31,				$	168		$	176	$	160

Retirement_Benefits_Tables

Retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2014
Pension Plans Defined Benefit [Member]
Reconciliation of Changes in Plans' Benefit Obligation, Fair Value of Assets and Funded Status			2014								2013
								Rest of							Rest of
			U.S.		U.K.			World			U.S.		U.K.		World
			(Dollars in millions)
	Total accumulated benefit obligation at December 31,		$	349	$	1,460		$	754		$	767	$	4,730	$	865
	Change in benefit obligation:
	Benefit obligations at beginning of period		$	769	$	4,729		$	930		$	1,073	$	4,730	$	955
		Service cost		2		-			21			2		-		23
		Interest cost		37		206			34			42		189		36
		Plan amendments		-		7			2			-		-		1
		Actuarial (gain) loss		105		1,384			237			-133		-7		-34
		Foreign currency exchange rate changes		-		-321			-113			-		95		-
		Settlement/Curtailment (gain) loss		-520		-4,283			-224			-153		-		-
		Benefits paid		-43		-262			-46			-62		-278		-51
	Benefit obligations at December 31,			350		1,460			841			769		4,729		930
	Change in plan assets:
	Fair value of plan assets at beginning of period			695		5,763			328			804		5,552		303
		Actual return on plan assets, less plan expense		82		1,022			31			46		320		48
		Foreign currency exchange rate changes		-		-361			-26			-		122		-23
		Company contributions		41		219			61			60		47		51
		Settlements		-520		-4,283			-223			-153		-		-
		Benefits paid		-43		-262			-46			-62		-278		-51
	Fair value of plan assets at December 31,			255		2,098			125			695		5,763		328
	Funded status at December 31,		$	-95	$	638		$	-716		$	-74	$	1,034	$	-602
Amounts Recognized in Consolidated Balance Sheets	The following table provides the amounts recognized in the consolidated balance sheets:
			As of December 31,
			2014								2013
								Rest of							Rest of
			U.S.		U.K.			World			U.S.		U.K.		World
			(Dollars in millions)
		Non-current assets	$	2	$	638		$	23		$	2	$	1,034	$	23
		Current liabilities		-		-			-22			-		-		-25
		Liabilities held-for-sale		-		-			-40			-		-		-
		Long-term liabilities		-97		-			-677			-76		-		-600
		Net amount recognized	$	-95	$	638		$	-716		$	-74	$	1,034	$	-602
Pre-tax Amounts Recognized in Accumulated Other Comprehensive Earnings (Losses)	The pre-tax amounts recognized in accumulated other comprehensive earnings (losses) consist of:
			As of December 31,
			2014								2013
								Rest of							Rest of
			U.S.		U.K.			World			U.S.		U.K.		World
			(Dollars in millions)
		Prior service benefit (cost)	$	-	$	-		$	-4		$	-	$	-	$	-3
		Net gain (loss)		-80		-210			-300			-132		-144		-197
		Accumulated other comprehensive earnings (loss)	$	-80	$	-210		$	-304		$	-132	$	-144	$	-200
Pension Plans With Accumulated Benefit Obligation in Excess of Plan Assets	Information for pension plans with an accumulated benefit obligation in excess of plan assets is as follows:
			As of December 31,
			2014					2013
					Rest of						Rest of
			U.S.		World			U.S.			World
			(Dollars in millions)
		Projected benefit obligation	$	341	$	752		$	748		$	636
		Accumulated benefit obligation		339		665			746			572
		Fair value of assets		244		13			672			11
Components of Net Benefit Cost (Income) and Other Amounts Recognized in Other Comprehensive (Earnings) Loss	The following table provides the components of net pension cost (income) and other amounts recognized in other comprehensive (earnings) loss for the Company's defined benefit pension plans and defined contribution plans:
			Years Ended December 31,
			2014								2013						2012
								Rest of							Rest of						Rest of
			U.S.		U.K.			World			U.S.		U.K.		World		U.S.		U.K.		World
			(Dollars in millions)
	Net pension cost (income)
	Defined benefit plans:
	Service cost		$	2	$	-		$	21		$	2	$	-	$	23	$	4	$	-	$	19
	Interest cost			37		206			34			42		189		36		59		215		38
	Expected return on plan assets			-49		-341			-16			-59		-315		-20		-80		-328		-20
	Settlement/Curtailment (gain) loss			117		600			72			35		-		-		92		-		2
	Amortization of prior service (benefit) cost			-		-			1			-		-		1		2		-		-
	Amortization of net (gain) loss			8		-			11			27		-		18		19		-		9
		Defined benefit plans		115		465			123			47		-126		58		96		-113		48
	Defined contribution plans cost			23		4			24			22		3		16		22		3		16
		Net pension cost (income)		138		469			147			69		-123		74		118		-110		64
	Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
	Prior service (benefit) cost			-		7			2			-		-		-1		-		-		1
	Net (gain) loss			72		703			223			-120		-12		-61		33		295		125
	Effect of exchange rates on amounts included in AOCI			-		-45			-36			-		3		-4		-		-2		7
	Amortization or curtailment recognition of prior service benefit (cost)			-		-7			-1			-		-		1		-2		-		-1
	Amortization or settlement recognition of net gain (loss)			-125		-592			-84			-62		-		-19		-110		-		-11
	Total recognized in other comprehensive (earnings) loss			-53		66			104			-182		-9		-84		-79		293		121
	Total recognized net pension (income) cost and other comprehensive (earnings) loss		$	85	$	535		$	251		$	-113	$	-132	$	-10	$	39	$	183	$	185
Estimated Amounts to be Amortized from Accumulated Other Comprehensive Earnings Over Next Fiscal Year	The estimated amounts that will be amortized from accumulated other comprehensive earnings over the next fiscal year are as follows:
			Year Ending
			31-Dec-15
					Rest of
			U.S.		World
			(Dollars in millions)
		Prior service (benefit) cost	$	-	$	1
		Net (gain) loss		7		29
		Total	$	7	$	30
Fair Value of Company's United States and United Kingdom Pension Plan Assets, by Asset Category			As of December 31,
			2014								2013
			Level 1		Level 2			Level 3			Level 1		Level 2		Level 3
			(Dollars in millions)
	Cash and cash equivalents		$	943	$	-		$	-		$	656	$	-	$	-
	Fixed income investments:
		Corporate bonds		-		109			-			-		1,864		-
		U.K. government guaranteed bonds		359		-			-			1,724		-		-
		Collateral assets for structured equity holdings		86		-			-			80		-		-
		Asset backed securities		-		665			-			-		1,081		-
	Equities:
		Common stock		2		-			-			4		-		-
		Structured equity holdings		-		114			-			-		916		-
	Real estate			-		99			-			-		148		-
	Other			-		-24			-			-		-15		-
		Total assets at fair value	$	1,390	$	963		$	-		$	2,464	$	3,994	$	-
Expected Future Benefit Payments			U.S.			U.K.				Rest of World
		Years Ending December 31,	(Dollars in millions)
		2015	$	7		$	29			$	24
		2016		36			24				26
		2017		10			26				28
		2018		11			28				30
		2019		12			32				31
		2020 - 2024		76			225				183
Pension Plans Defined Benefit [Member] | Benefit Costs [Member]
Weighted-Average Assumptions Used
			Years Ended December 31,
			2014								2013						2012
								Rest of							Rest of						Rest of
			U.S.		U.K.			World			U.S.		U.K.		World		U.S.		U.K.		World
	Discount rate		5	%	4.5	%		4.18	%		4	%	4.25	%	3.9	%	4.75	%	4.75	%	4.82	%
	Expected long-term return on plan assets		7.5	%	6.25	%		6.31	%		7.75	%	6.25	%	6.53	%	7.75	%	6.25	%	6.5	%
	Rate of increase in compensation levels		3.5	%	N/A			2.9	%		5	%	N/A		2.9	%	4.76	%	N/A		2.92	%
	To develop the expected long-term rate of return on asset assumptions, the Company considered the historical returns and the future expectations for returns for each asset class, as well as the target asset allocation of the pension portfolio. The U.K. pension plan and certain of the U.S. pension plans are closed to future benefits, therefore the rate of increase in compensation was not applicable in determining the net period benefit cost for 2014, 2013 and 2012, nor in determining the benefit obligation as of December 31, 2014 and 2013.
Pension Plans Defined Benefit [Member] | Benefit Obligations [Member]
Weighted-Average Assumptions Used	The weighted-average assumptions used to calculate the benefit obligations were:
			As of December 31,
			2014								2013
								Rest of							Rest of
			U.S.		U.K.			World			U.S.		U.K.		World
	Discount rate		4.25	%	3.75	%		2.41	%		5	%	4.5	%	4.18	%
	Rate of increase in compensation levels		5	%	N/A			2.89	%		3.5	%	N/A		2.9	%
Other Postretirement Benefit Plans Defined Benefit [Member]
Amounts Recognized in Consolidated Balance Sheets	The following table provides the amounts recognized in the consolidated balance sheets:
			As of December 31,
			2014					2013
					Rest of						Rest of
			U.S.		World			U.S.			World
			(Dollars in millions)
		Current liabilities	$	-26	$	-6		$	-30		$	-6
		Long-term liabilities		-262		-84			-293			-82
		Total amount recognized	$	-288	$	-90		$	-323		$	-88
Pre-tax Amounts Recognized in Accumulated Other Comprehensive Earnings (Losses)	The pre-tax amounts recognized in accumulated other comprehensive earnings (losses) consist of:
			As of December 31,
			2014					2013
					Rest of						Rest of
			U.S.		World			U.S.			World
			(Dollars in millions)
		Prior service benefit (cost)	$	50	$	10		$	58		$	17
		Net gain (loss)		19		-7			-2			2
		Accumulated other comprehensive earnings (loss)	$	69	$	3		$	56		$	19
Components of Net Benefit Cost (Income) and Other Amounts Recognized in Other Comprehensive (Earnings) Loss	The following table provides the components of net postretirement benefit (income) cost and other amounts recognized in other comprehensive (earnings) loss for the plans.
			Years Ended December 31,
			2014					2013					2012
					Rest of						Rest of				Rest of
			U.S.		World			U.S.			World		U.S.		World
			(Dollars in millions)
	Net postretirement benefit (income) cost:
	Service cost		$	-	$	1		$	1		$	1	$	1	$	1
	Interest cost			15		4			14			4		16		5
	Curtailment/Settlement (gain) loss			-		-			-29			-		-36		-
	Amortization of prior service (benefit) cost			-8		-5			-13			-5		-22		-7
	Amortization of net (gain) loss			-2		-			1			1		-		1
		Net postretirement benefit (income) cost		5		-			-26			1		-41		-
	Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss:
	Prior service (benefit) cost			-		-			57			3		-		3
	Net (gain) loss			-23		10			-40			-9		-6		-8
	Amortization or curtailment recognition of prior service benefit (cost)			8		5			31			5		51		6
	Amortization or settlement recognition of net gain (loss)			2		1			9			-		6		-1
	Total recognized in other comprehensive (earnings) loss			-13		16			57			-1		51		-
	Total recognized net postretirement benefit (income) cost and other comprehensive (earnings) loss		$	-8	$	16		$	31		$	-	$	10	$	-
Estimated Amounts to be Amortized from Accumulated Other Comprehensive Earnings Over Next Fiscal Year	The estimated amounts that will be amortized from accumulated other comprehensive earnings over the next fiscal year are as follows:
			Year Ending
			31-Dec-15
					Rest of
			U.S.		World
			(Dollars in millions)
		Prior service (benefit) cost	$	-7	$	-5
		Net actuarial (gain) loss		-4		-
		Total	$	-11	$	-5
Expected Future Benefit Payments
			U.S.			Rest of World
		Years Ending December 31,	(Dollars in millions)
		2015	$	27		$	5
		2016		26			5
		2017		25			5
		2018		24			5
		2019		23			5
		2020 -2024		96			28
Reconciliation of Changes in Plans' Benefit Obligation, Fair Value of Assets and Funded Status			2014					2013
					Rest of						Rest of
			U.S.		World			U.S.			World
			(Dollars in millions)
	Change in benefit obligation:
	Benefit obligations at beginning of period		$	323	$	88		$	330		$	103
		Service cost		-		1			1			1
		Interest cost		15		4			14			4
		Actuarial (gain) loss		-23		10			-40			-10
		Foreign currency exchange rate changes		-		-7			-			-6
		Plan amendments		-		-			57			3
		Plan participant contributions		1		-			1			-
		Benefits paid		-28		-6			-40			-7
	Benefit obligations at December 31,			288		90			323			88
	Change in plan assets:
	Fair value of plan assets at beginning of period			-		-			-			-
		Company contributions		27		6			39			7
		Plan participant contributions		1		-			1			-
		Benefits paid		-28		-6			-40			-7
	Fair value of plan assets at December 31,			-		-			-			-
	Funded status at December 31,		$	-288	$	-90		$	-323		$	-88
One-Percentage-Point Change in Assumed Health Care Cost Trend Rate	A one-percentage-point change in the assumed health care cost trend rate would have had the following effects:
			One-Percentage-Point
			Increase							Decrease
						Rest of							Rest of
			U.S.			World				U.S.			World
			(Dollars in millions)
	Effect on total of service and interest cost components for the year ended December 31, 2014		$	1		$	-			$	-1		$	-
	Effect on postretirement benefit obligation as of measurement date		$	21		$	7			$	-18		$	-7
Other Postretirement Benefit Plans Defined Benefit [Member] | Benefit Costs [Member]
Weighted-Average Assumptions Used
			Years Ended December 31,
			2014					2013					2012
					Rest of						Rest of				Rest of
			U.S.		World			U.S.			World		U.S.		World
	Discount rate		5	%	4.75	%		4	%		4	%	4.75	%	4.5	%
Other Postretirement Benefit Plans Defined Benefit [Member] | Benefit Obligations [Member]
Weighted-Average Assumptions Used	The discount rate and assumed health care cost trend rates used in the measurement of the benefit obligation as of the applicable measurement dates were:
			As of December 31,
			2014					2013
					Rest of						Rest of
			U.S.		World			U.S.			World
	Discount rate		4	%	3.75	%		5	%		4.75	%
	Initial health care cost trend rate at end of year		7	%	4.5	%		6.9	%		4	%
	Ultimate health care cost trend rate		4.5	%	5	%		5	%		5	%
	Year in which ultimate rate is reached		2022		2017			2018			2017

Fair_Value_Measurements_and_Fi1

Fair Value Measurements and Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Measurements Recurring Basis [Table Text Block]			As of December 31,
			2014				2013				Measurement Approach
			(Dollars in millions)
		Foreign currency exchange contracts — current assets	$	7			$	6			Level 2
		Foreign currency exchange contracts — noncurrent assets		2				-			Level 2
		Foreign currency exchange contracts — current liability		13				5			Level 2
		Foreign currency exchange contracts — noncurrent liability		13				9			Level 2
Financial Instruments Not Carried at Fair Value [Table Text Block]			As of December 31,
			2014						2013
				Carrying		Fair			Carrying				Fair	Measurement
				Value		Value			Value				Value	Approach
			(Dollars in millions)
		Short-term debt, fixed and floating rate	$	222		$	222		$	159		$	159	Level 2
		Fixed rate long-term debt	$	1,326		$	1,389		$	1,821		$	1,884	Level 2
		Fixed rate exchangeable notes	$	30		$	109		$	134		$	375	Level 2
Offsetting Assets And Liabilites [Table Text Block]	Offsetting of Derivative Assets and Liabilities
	The following table reflects the fair value of derivative assets and liabilities; the amounts consist of interest rate contracts and foreign currency exchange contracts, none of which are individually significant:
				As of December 31,
				2014											2013
				Gross Amounts Recognized				Gross Amounts Offset				Net Amounts Reported			Gross Amounts Recognized		Gross Amounts Offset		Net Amounts Reported
					(Dollars in millions)
	Derivative Assets:
		Foreign Currency		$	45			$	-36			$	9		$	42	$	-36	$	6
	Derivative Liabilities:
		Foreign Currency			62				-36				26			50		-36		14

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Total Outstanding Debt	13. Debt
	Total outstanding debt of the Company consisted of the following:
						As of December 31,
						2014		2013
						(Dollars in millions)
			Short-term debt			$	222	$	159
			Long-term debt:
			6.375% Senior Notes, due 2014			$	-	$	234
			7.00% Senior Notes, due 2014				-		233
			7.25% Senior Notes, due 2017				444		446
			4.50% Senior Notes, due 2021				400		400
			4.45% Senior Notes, due 2023				400		400
			Exchangeable senior notes, due 2015				30		134
			Revolving credit facility				-		-
			Capitalized leases				14		18
			Other borrowings				68		90
				Total long-term debt			1,356		1,955
			Less current portion				72		482
				Long-term debt, net of current portion		$	1,284	$	1,473
Maturities of Long-Term Debt Outstanding	The weighted average interest rate on the Company's debt as of December 31, 2014 and 2013 was 5.4% and 5.9%, respectively. The maturities of long-term debt outstanding as of December 31, 2014 are:
	Years Ended December 31,			(Dollars in millions)
	2015			$	72
	2016				25
	2017				448
	2018				3
	2019				3
	Thereafter				805
		Total		$	1,356

Restructuring_Charges_and_Asse1

Restructuring Charges and Asset Impairments (Tables)	12 Months Ended
	Dec. 31, 2014
Restructuring Charges and Asset Impairments [Abstract]
Restructuring Charges and Asset Impairments								Occupant
					Chassis			Safety						Automotive
					Systems			Systems			Electronics			Components
					Segment			Segment			Segment			Segment		Corporate		Total
					(Dollars in millions)
	For the year ended December 31, 2014:
		Severance and other charges - net			$	55		$	7		$	-		$	4	$	-	$	66
		Curtailment gain - net				-1			-			-			-		-		-1
		Asset impairments related to restructuring activities				12			-			-			-		-		12
			Total restructuring charges			66			7			-			4		-		77
		Other asset impairments				7			-			-			-		-		7
		Total restructuring charges and asset impairments			$	73		$	7		$	-		$	4	$	-	$	84
	For the year ended December 31, 2013:
		Severance and other charges			$	22		$	36		$	-		$	-3	$	1	$	56
		Curtailment loss - net				1			-			-			-		-		1
		Asset impairments related to restructuring activities				-			1			-			1		-		2
			Total restructuring charges			23			37			-			-2		1		59
		Other asset impairments				4			-			1			2		-		7
		Total restructuring charges and asset impairments			$	27		$	37		$	1		$	-	$	1	$	66
	For the year ended December 31, 2012:
		Severance and other charges			$	64		$	20		$	-		$	7	$	-	$	91
		Asset impairments related to restructuring activities				2			-			-			-		-		2
			Total restructuring charges			66			20			-			7		-		93
		Other asset impairments				2			-			-			-		-		2
		Total restructuring charges and asset impairments			$	68		$	20		$	-		$	7	$	-	$	95
						Years Ended December 31,
						2014			2013			2012
						(Dollars in millions)
		Closure or planned closure of various facilities				$	54		$	31		$	35
		Workforce reduction initiatives					23			28			58
				Total restructuring charges		$	77		$	59		$	93
		Asset impairments related to write-downs of:
			Machinery and equipment			$	7		$	6		$	2
			Buildings				-			1			-
				Total asset impairments		$	7		$	7		$	2
Movement of Restructuring Reserves for Severance and Other Charges Including Reserves Related to Severance-Related Postemployment Benefits	Restructuring Reserves
	The following table illustrates the movement of the restructuring reserves for severance and other charges, including reserves related to severance-related postemployment benefits for both periods presented:
					Years Ended December 31,
					2014			2013
					(Dollars in millions)
		Beginning balance			$	88		$	121
			Current period accruals, net of changes in estimates			66			56
			Liabilities held-for-sale			-2			-
			Used for purposes intended			-69			-95
			Effects of foreign currency translation and transfers			-9			6
		Ending balance			$	74		$	88

Lease_Commitments_Tables

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2014
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
Future Minimum Lease Payments for Noncancelable Capital and Operating Leases	As of December 31, 2014, the future minimum lease payments for noncancelable capital and operating leases with initial terms in excess of one year were as follows:
				Capital		Operating
		Years Ended December 31,		Leases		Leases
				(Dollars in millions)
		2015		$	3	$	60
		2016			3		51
		2017			3		47
		2018			3		43
		2019			2		48
		Thereafter			3		54
		Total minimum payments required		$	17	$	303
			Less amounts representing interest		3
		Present value of net minimum capital lease payments			14
			Less current installments		2
		Obligations under capital leases, excluding current installments		$	12

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Share-Based Compensation [Abstract]
Significant Equity Award Grants	The significant equity award grants during 2014, 2013 and 2012 are as follows:
			February 21,				February 22,				February 23,
			2014				2013				2012
			SSARs			RSUs	SSARs		RSUs		SSARs		RSUs
		Number Granted		850,900		284,723		1,199,551	428,169			1,282,518	515,523
		Grant date fair market value	$	82.5			$	58.2			$	45.11
		Maximum value	$	130			$	110			$	95
	The exercise price of the SSARs and stock options is equal to the fair market value under the applicable plan of the Company common stock on the grant date. For awards granted in 2014 and 2013, the fair market value is the closing stock price. For awards granted in 2012, the fair market value is calculated as the average of the high and low stock price.
Share-based Compensation Expense Recognized for Plan	The total share-based compensation expense recognized for the Plan was as follows:
				Years Ended December 31,
				2014			2013			2012
				(Dollars in millions)
	SSARs and stock options			$	9		$	10		$	5
	RSUs				24			26			16
	Performance Units				3			-			-
		Total share-based compensation expense		$	36		$	36		$	21
Fair Value SSARs and Stock Options Estimated Using the Black-Scholes Option Pricing	Fair value for SSARs was estimated at the date of grant using the Black-Scholes option pricing model using the following weighted-average assumptions:
			February 21,				February 22,			February 23,
			2014				2013			2012
		Expected volatility		61.10%				79.30%			79.30%
		Dividend yield		0.00%				0.00%			0.00%
		Expected life		5.0 years				5.0 years			5.0 years
		Risk-free rate		1.53%				0.83%			0.89%
Summary of SSAR and Stock Option Activity Under Plan	A summary of SSAR and stock option activity under the Plan and changes for the year ended December 31, 2014 is presented below:
										Weighted-
							Weighted-			Average
				Thousands of			Average			Remaining			Aggregate
				Options			Exercise			Contractual			Intrinsic
				and SSARs			Price			Term			Value
													(Dollars in millions)
		Outstanding as of January 1, 2014			3,572		$	47.88
		Granted			851			82.5
		Exercised			-1,786			45.89
		Forfeited or expired			-102			52.09
		Outstanding as of December 31, 2014			2,535			60.73			6		$	104
		Exercisable as of December 31, 2014			577		$	42.01			4.5		$	35
Summary of Nonvested Restricted Stock Units	A summary of the status of the Company's nonvested RSUs as of December 31, 2014, and changes during the year ended December 31, 2014, is presented below:
							Weighted-
				Thousands of			Average
				Restricted			Grant-Date
				Stock Units			Fair Value
		Nonvested Units
		Nonvested as of January 1, 2014			805		$	52.96
		Granted			299			82.44
		Vested			-384			52.36
		Forfeited			-44			59.66
		Nonvested as of December 31, 2014			676		$	65.92

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Certain Financial Information by Segment [Table Text Block]	The following tables present certain financial information by segment:
				Years Ended December 31,
				2014			2013			2012
				(Dollars in millions)
	Sales to external customers:
		Chassis Systems		$	11,354		$	11,492		$	10,685
		Occupant Safety Systems			3,357			3,314			3,287
		Electronics			937			721			654
		Automotive Components			1,891			1,908			1,818
	Total sales to external customers			$	17,539		$	17,435		$	16,444
	Intersegment sales:
		Chassis Systems		$	16		$	14		$	20
		Occupant Safety Systems			139			130			90
		Electronics			609			543			514
		Automotive Components			74			75			80
	Total intersegment sales			$	838		$	762		$	704
	Total segment sales:
		Chassis Systems		$	11,370		$	11,506		$	10,705
		Occupant Safety Systems			3,496			3,444			3,377
		Electronics			1,546			1,264			1,168
		Automotive Components			1,965			1,983			1,898
	Total segment sales			$	18,377		$	18,197		$	17,148
	Earnings before taxes:
		Chassis Systems		$	831		$	841		$	669
		Occupant Safety Systems			282			239			254
		Electronics			144			126			132
		Automotive Components			168			150			115
	Segment earnings before taxes				1,425			1,356			1,170
	Corporate expense and other				-920			-120			-78
	Interest expense — net				-109			-132			-111
	Loss on retirement of debt — net				-7			-20			-6
	Net earnings attributable to noncontrolling interest, net of tax				41			37			33
		Earnings before income taxes		$	430		$	1,121		$	1,008
	Capital expenditures:
		Chassis Systems		$	418		$	461		$	364
		Occupant Safety Systems			118			112			104
		Electronics			70			80			61
		Automotive Components			76			77			86
		Corporate			12			5			8
				$	694		$	735		$	623
	Depreciation and amortization:
		Chassis Systems		$	250		$	243		$	228
		Occupant Safety Systems			83			79			80
		Electronics			51			42			38
		Automotive Components			55			63			60
		Corporate			5			3			3
				$	444		$	430		$	409
	The Company accounts for intersegment sales or transfers at current market prices.
Certain Balance Sheet Information by Segment	The following table presents certain balance sheet information by segment:
					December 31,
					2014			2013
					(Dollars in millions)
	Segment assets:
		Chassis Systems			$	5,842		$	5,632
		Occupant Safety Systems				2,024			2,162
		Electronics				1,247			1,019
		Automotive Components				803			852
			Segment assets			9,916			9,665
		Corporate assets				812			2,047
			Segment and corporate assets			10,728			11,712
	Deferred tax assets					566			540
	Total assets				$	11,294		$	12,252
	Corporate assets principally consist of cash and cash equivalents and pension assets.
Certain Information Concerning Principal Geographic Areas
				United									Rest of
				States			China			Germany			World			Total
				(Dollars in millions)
	Sales to external customers:
		Year Ended December 31, 2014		$	4,496		$	3,131		$	2,097		$	7,815		$	17,539
		Year Ended December 31, 2013			4,992			2,758			2,199			7,486			17,435
		Year Ended December 31, 2012			4,713			2,201			2,330			7,200			16,444
	Property, plant and equipment - net:
		As of December 31, 2014		$	567		$	565		$	394		$	1,119		$	2,645
		As of December 31, 2013			534			478			430			1,276			2,718
		As of December 31, 2012			563			357			403			1,062			2,385
Sales to Company's Largest-End-Customers
										Fiat
							Ford			Chrysler					Aggregate
				Volkswagen				Motor		Automobiles		General			Percent of
				AG			Company			N.V.(a)		Motors			Total Sales
				(Dollars in millions)
		Year Ended December 31, 2014		$	4,525		$	3,210		$	2,368	$	1,288			64.90%
		Year Ended December 31, 2013			4,298			3,234			2,359		1,757			66.80%
		Year Ended December 31, 2012			3,863			2,897			2,290		1,649			65.10%
	(a)	Effective in 2014, Fiat Chrysler Automobiles N.V. includes FCA US LLC (formerly known as Chrysler Group LLC), which was shown on a standalone basis for the years ended 2013 and 2012.

Unconsolidated_Affiliates_Tabl

Unconsolidated Affiliates (Tables)	12 Months Ended
	Dec. 31, 2014
Unconsolidated Affiliates [Abstract]
Company's Beneficial Ownership in Affiliates Accounted for Under Equity Method	21. Unconsolidated Affiliates
	As of December 31, 2014 and 2013, the Company's investment in affiliates was $231 million and $207 million, respectively.
	The Company's beneficial ownership in affiliates accounted for under the equity method follows:
				As of December 31,
				2014		2013		2012
		SM-Sistemas Modulares Ltda. (Brazil)			50%		50%		50%
		ABC Sistemas E Modulos Ltda. (Brazil)			33%		33%		33%
		CSG TRW Chassis Systems Co., Ltd. (China)			50%		50%		50%
		Shanghai TRW Automotive Safety Systems Company Ltd. (China)			50%		50%		50%
		Shin-Han (Beijing) Automobile Parts System Co., Ltd (China)(a)			30%		30%		30%
		Fuji Valve (Guangdong) Co., Ltd. (China)(a)			25%		25%		25%
		TH Braking Company S.A.S. (France)			50%		50%		50%
		Rane TRW Steering Systems Limited (India)			50%		50%		50%
		Brakes India Limited (India)			49%		49%		49%
		TRW Sun Steering Wheels Private Limited (India)			49%		49%		49%
		Evercast, S.A. de C.V. (Mexico)			30%		-		-
		Shin Han Valve Industrial Company, Ltd. (South Korea)(a)			25%		25%		25%
		Componentes Venezolanos de Direccion, S.A. (Venezuela)(a)			40%		40%		40%
		(a)	These affiliates are classified as held-for-sale (see Note 4).

Quarterly_Financial_Informatio1

Quarterly Financial Information (Unaudited) (Tables)	3 Months Ended
	Mar. 28, 2014
Quarterly Financial Information (Unaudited) [Abstract]
Quarterly Financial Information (Unaudited) [Table Text Block]	22. Quarterly Financial Information (Unaudited)
			For the 2014 Quarter Ended								For the 2013 Quarter Ended
			28-Mar		27-Jun		26-Sep		31-Dec		29-Mar		28-Jun		27-Sep		31-Dec
			(Dollars in millions, except per share amounts)
	Sales		$	4,442	$	4,593	$	4,156	$	4,348	$	4,213	$	4,514	$	4,212	$	4,496
		Gross profit		500		567		475		524		427		531		450		522
	Pension and postretirement benefit settlement and curtailment expenses			-		-		-		790		-		-		-		31
	Restructuring charges and asset impairments			20		6		10		48		37		1		5		23
	Loss on retirement of debt - net			-		-		-		7		-		5		-		15
		Earnings (loss) before income taxes		287		367		278		-502		235		357		268		261
		Net earnings (loss) attributable to TRW		199		265		189		-360		162		248		197		363
	Basic earnings (loss) per share		$	1.76	$	2.39	$	1.7	$	-3.22	$	1.35	$	2.09	$	1.68	$	3.15
	Diluted earnings (loss) per share		$	1.68	$	2.27	$	1.61	$	-3.22	$	1.29	$	1.99	$	1.6	$	3

Description_of_Business_Additi

Description of Business - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
Description Of Business [Abstract]
Sales to major OEM	82.00%

Merger_Detail

Merger (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014
Merger [Abstract]
Merger Consideration	$105.60

Basis_of_Presentation_and_Summ3

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Affiliates not required to be consolidated, investments owned under equity method	30.00%
Securites excluded from diluted earnings per share calculation	0.8	2.1	1
Research and development expenses	$230	$193	$164
Allowance for doubtful accounts	$26	$29
Tools Dies And Molds [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Property Plant And Equipment Useful Life	5 years

Basis_of_Presentation_and_Summ4

Basis of Presentation and Summary of Significant Accounting Policies - Net Earnings (Losses) Attributable to TRW and Weighted Average Shares Outstanding (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share Disclosure [Line Items]
Net earnings attributable to TRW	($360)	$189	$265	$199	$363	$197	$248	$162	$293	$970	$1,008
Net earnings attributable to TRW for purposes of calculating diluted earnings per share									300	978	1,016
Interest expense on exchangeable notes, net of tax									3	4	4
Amortization of discount on exchangeable notes, net of tax									$4	$4	$4
Basic:
Weighted average shares outstanding									111.7	117.6	122.4
Basic earnings per share	($3.22)	$1.70	$2.39	$1.76	$3.15	$1.68	$2.09	$1.35	$2.62	$8.25	$8.24
Diluted:
Weighted average shares outstanding									111.7	117.6	122.4
Effect of dilutive stock options, RSUs and SSARs									1.6	1.3	1.4
Shares applicable to exchangeable notes									4.7	5.7	5.9
Diluted weighted average shares outstanding									118	124.6	129.7
Diluted earnings per share	($3.22)	$1.61	$2.27	$1.68	$3	$1.60	$1.99	$1.29	$2.54	$7.85	$7.83

Basis_of_Presentation_and_Summ5

Basis of Presentation and Summary of Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2014
Building [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property Plant And Equipment Useful Life	30 years
Building [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property Plant And Equipment Useful Life	40 years
Machinery And Equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property Plant And Equipment Useful Life	5 years
Machinery And Equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property Plant And Equipment Useful Life	10 years
Computer Equipment And Capitalized Software [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property Plant And Equipment Useful Life	3 years
Computer Equipment And Capitalized Software [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property Plant And Equipment Useful Life	5 years

Basis_of_Presentation_and_Summ6

Basis of Presentation and Summary of Significant Accounting Policies - Movement in Product Warranty Liability (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Basis of Presentation and Summary of Significant Acconting Policies [Abstract]
Beginning balance	$152	$140
Current period accruals, net of changes in estimates	53	58
Liabilitites held-for-sale	-2	0
Used for purposes intended	-40	-47
Effects of foreign currency translation	-9	1
Ending balance	$154	$152

Basis_of_Presentation_and_Summ7

Basis of Presentation and Summary of Significant Accounting Policies - Components of Accumulated Other Comprehensive Earnings (Losses) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Basis of Presentation and Summary of Significant Acconting Policies [Abstract]
Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax	($13)	($16)	$10
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax	-501	-405	-559
Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax	-225	41	83
Total accumulated other comprehensive earnings (losses)	-739	-380	-466
OCI before reclassifications, cash flow hedges	-1	-25
OCI before reclassifications, retirement obligations	-96	134
OCI before reclassifications, foreign currency translation	-266	-42
OCI before reclassifications, total	-363	67
Amounts reclassified from AOCI, cash flow hedges	4	-1
Amounts reclassified from AOCI, retirement obligations	0	20
Amounts reclassified from AOCI, total	4	19
Current period OCI, cash flow hedges	3	-26
Current period OCI, Retirement obligations	-96	154
Current Period OCI, foreign currency translation	-266	-42
Current period OCI, total	-359	86
Actuarial gains or losses reclassified from AOCI	12	46
Prior service costs reclassified from AOCI	12	17
Tax amount of retirement obligations reclassified from AOCI	$0	$9

Assets_Held_for_Sale_Detail

Assets Held for Sale (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets Held for Sale [Abstract]
Cash, held-for-sale	$10
Accounts receivable - net, held-for sale	23
Inventories, held-for sale	44
Prepaid expenses and other current assets, held-for sale	6
Property, plant and equipment - net, held-for sale	158
Other assets, held-for-sale	11
Total assets held-for-sale	252	0
Trade accounts payable, held-for-sale	24
Accrued compensation, held-for sale	15
Other current liabilities, held-for-sale	24
Pension and defined contribution benefits held-for-sale	41
Total liabilities related to assets held-for-sale	104	0
Purchase Price of Engine Valve Divestiture	$385

Assets_Held_for_Sale_Earnings_

Assets Held for Sale- Earnings Before Income Taxes (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Earnings before Income Taxes, Engine Valve [Line Items]
Earnings (losses) before income taxes	($502)	$278	$367	$287	$261	$268	$357	$235	$430	$1,121	$1,008
Less: Net earnings attributable to noncontrolling interest, net of tax									41	37	33
Engine Valve [Member]
Schedule of Earnings before Income Taxes, Engine Valve [Line Items]
Earnings (losses) before income taxes									47	39	42
Less: Net earnings attributable to noncontrolling interest, net of tax									4	5	3
Earnings before income taxes attributable to TRW									$43	$34	$39

Inventories_Major_Classes_of_I

Inventories - Major Classes of Inventory (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Inventories [Abstract]
Finished products and work in process	$470	$499
Raw materials and supplies	502	520
Total inventories	$972	$1,019

Investment_in_Joint_Venture_Af1

Investment in Joint Venture Affiliates (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Investment in Joint Venture Affiliates [Abstract]
Investment in non-consolidated joint venture assets	$17
Equity Method Investment Ownership Percentage	30.00%
Joint venture affiliate construction in process	46
Joint venture affiliates long-term liabilities	$32

Property_Plant_and_Equipment_A

Property, Plant and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense	$440	$416	$397

Property_Plant_and_Equipment_M

Property, Plant and Equipment - Major Classes of Property, Plant and Equipment (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Property Plant And Equipment [Line Items]
Property, plant and equipment	$6,710	$7,138
Accumulated depreciation and amortization	-4,065	-4,420
Total property, plant and equipment - net	2,645	2,718	2,385
Land And Land Improvements [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment	174	213
Accumulated depreciation and amortization	-27	-33
Building [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment	752	831
Accumulated depreciation and amortization	-377	-416
Machinery And Equipment [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment	5,682	5,985
Accumulated depreciation and amortization	-3,583	-3,879
Computer Equipment And Capitalized Software [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment	102	109
Accumulated depreciation and amortization	($78)	($92)

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Changes in Goodwill (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Beginning Balance	$1,760	$1,756
Allocation of goodwill due to change in segment reporting		0
Effects of foreign currency translation	-11	4
Ending Balance	1,749	1,760
Chassis Systems [Member]
Goodwill [Line Items]
Beginning Balance	1,071	796
Allocation of goodwill due to change in segment reporting		275
Effects of foreign currency translation	-1	0
Ending Balance	1,070	1,071
Occupant Safety Systems [Member]
Goodwill [Line Items]
Beginning Balance	541	537
Effects of foreign currency translation	-10	4
Ending Balance	531	541
Electronics [Member]
Goodwill [Line Items]
Beginning Balance	148	423
Allocation of goodwill due to change in segment reporting		-275
Effects of foreign currency translation	0	0
Ending Balance	$148	$148

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets [Abstract]
Amortization Of Intangible Assets	($4)	($14)	($12)

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Intangible Assets By Major Class [Line Items]
Intangible Assets Gross Excluding Goodwill	$451	$450
Intangible Assets Net Excluding Goodwill	291	292
Definite-lived intangible assets:
Definite-lived intangibles Gross Carrying amount	187	186
Definite-lived intangibles Accumulated Amortization	-160	-158
Definite-lived intangibles Net Carrying Amount	27	28
Indefinite-lived intangible:
Trademarks	264	264
Customer Relationships [Member]
Definite-lived intangible assets:
Definite-lived intangibles Gross Carrying amount	67	67
Definite-lived intangibles Accumulated Amortization	-67	-67
Definite-lived intangibles Net Carrying Amount	0	0
Developed technology and other intangible assets [Member]
Definite-lived intangible assets:
Definite-lived intangibles Gross Carrying amount	120	119
Definite-lived intangibles Accumulated Amortization	-93	-91
Definite-lived intangibles Net Carrying Amount	$27	$28

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets - Weighted Average Amortization Periods for Intangible Assets Subject to Amortization (Detail) (Other Intangible Assets Member)	12 Months Ended
	Dec. 31, 2014
Other Intangible Assets Member
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	9 years

Goodwill_and_Intangible_Assets6

Goodwill and Intangible Assets - Expected Amortization Expense (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Goodwill and Intangible Assets [Abstract]
Fiscal year 2015	$3
Fiscal year 2016	1
2017 and beyond	$23

Other_Income_Expense_Net_Detai

Other (Income) Expense, Net (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Expense (Income) - Net [Abstract]
Net provision for bad debts	$4	$4	($1)
Net gains on sales of assets and divestitures	0	0	-6
Foreign currency exchange losses	8	17	2
Royalty and grant income	-22	-19	-18
Miscellaneous other expense (income)	12	-3	-14
Other expense (income) - net	$2	($1)	($37)

Income_Taxes_Income_Tax_Expens

Income Taxes - Income Tax Expense (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
The components of earnings before income taxes are as follows:
Earnings before income taxes	($502)	$278	$367	$287	$261	$268	$357	$235	$430	$1,121	$1,008
Current
U.S. Federal									0	0	0
Non-U.S.									190	161	169
U.S. State and Local									0	0	2
Total current									190	161	171
Deferred
U.S. Federal									30	-39	-98
Non-U.S.									-127	-1	-97
U.S. State and Local									3	-7	-9
Total deferred									-94	-47	-204
Income tax expense (benefit)									96	114	-33
The reconciliation of income taxes calculated at the U.S. federal statutory income tax rate of 35% to income tax expense is:
Income taxes at U.S. statutory rate									150	392	353
U.S. state and local income taxes net of U.S. federal tax benefit									3	-6	-7
Difference in income tax on foreign earnings, losses and remittances									5	-23	-197
Tax holidays and incentives									-28	-32	-38
Valuation allowance									7	17	-63
Foreign and other tax credits									-47	-196	-82
Tax benefit related to the enactment of tax legislation									-3	-43	-9
Nondeductible expenses									9	8	12
Other									0	-3	-2
Income tax expense (benefit)									96	114	-33
Income tax benefit related to various tax planning and restructuring actions											-255
United States [Member]
The components of earnings before income taxes are as follows:
Earnings before income taxes									195	331	464
The reconciliation of income taxes calculated at the U.S. federal statutory income tax rate of 35% to income tax expense is:
Foreign and other tax credits										-196
Tax benefit related to the enactment of tax legislation										15
Foreign Country [Member]
The components of earnings before income taxes are as follows:
Earnings before income taxes									$235	$790	$544

Income_Taxes_Income_Tax_Expens1

Income Taxes - Income Tax Expense (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax reconciliation	35.00%

Income_Taxes_Deferred_Tax_Asse

Income Taxes - Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Deferred tax assets:
Pensions and postretirement benefits other than pensions	$274	$218
Inventory	40	41
Reserves and accruals	315	327
Net operating loss and credit carryforwards	617	682
Fixed assets and intangibles	65	58
Other	73	69
Total deferred tax assets	1,384	1,395
Valuation allowance for deferred tax assets	-274	-295
Total deferred tax assets net	1,110	1,100
Deferred tax liabilities:
Pensions and postretirement benefits other than pensions	-100	-200
Fixed assets and intangibles	-282	-266
Undistributed earnings of foreign subsidiaries	-104	-116
Deferred gain	-56	-59
Other	-63	-81
Total deferred tax liabilities	-605	-722
Net deferred taxes	$505	$378

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Current deferred tax liability	$9	$17
Net operating loss and credit carryforwards	617	682
Deferred tax assets, net operating loss or tax credit carryforwards not subject to expiration	220
Tax deductions in excess of financial statement amounts for stock based compensation and tax deductible goodwill	147
Unrecognized tax benefit	168	176	160	148
Unrecognized tax benefit that would affect effective tax rate	129	136	118
Deferred income tax, undistributed earnings of foreign subsidiaries not recognized	3,400
Tax benefit (expense), change in valuation allowance on net deferred tax assets	-7	-17	63
Unrecognized tax benefits, accrued interest and penalties	42	36	24
Unrecognized tax benefits, interest and penalties expense	10	12	1
Tax (benefit) expense	96	114	-33
Tax benefit related to the enactment of tax legislation	-3	-43	-9
Deferred tax assets held-for-sale	2
Deferred tax liabilities held-for-sale	4
Utilization Of Valuation Allowance [Member]
Income Taxes [Line Items]
Tax benefit (expense), change in valuation allowance on net deferred tax assets	-27		-37
Reversal Of Valuation Allowance [Member]
Income Taxes [Line Items]
Tax benefit (expense), change in valuation allowance on net deferred tax assets	20		100
United Kingdom [Member]
Income Taxes [Line Items]
Tax benefit related to the enactment of tax legislation		21	9
United Kingdom [Member] | Effective Prior To April First Twenty Twelve [Member]
Income Taxes [Line Items]
Corporate Income Tax Rate	25.00%
United Kingdom [Member] | Effective April First Twenty Twelve [Member]
Income Taxes [Line Items]
Corporate Income Tax Rate	24.00%
United Kingdom [Member] | Effective April First Twenty Thirteen [Member]
Income Taxes [Line Items]
Corporate Income Tax Rate	23.00%
United Kingdom [Member] | Effective April First Twenty Fourteen [Member]
Income Taxes [Line Items]
Corporate Income Tax Rate	21.00%
United Kingdom [Member] | Effective April First Twenty Fifteen [Member]
Income Taxes [Line Items]
Corporate Income Tax Rate	20.00%
United States [Member]
Income Taxes [Line Items]
Tax benefit related to the enactment of tax legislation		$15

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Beginning balance	$176	$160	$148
Additions based on tax positions related to the current year	16	14	12
Additions for tax positions of prior years	8	32	40
Reductions for tax positions of prior years	-7	-28	-23
Reductions for settlements	-7	-1	-17
Reductions due to lapse in statute of limitations	-8	-3	-3
Change attributable to foreign currency translation	-10	2	3
Ending balance	$168	$176	$160

Retirement_Benefits_Reconcilia

Retirement Benefits - Reconciliation of Changes in Plans' Benefit Obligation, Fair Value of Assets and Funded Status (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in benefit obligation:
Curtailment / settlement (gain) loss	$790	$0	$0	$0	$31	$0	$0	$0	$790	$31	$52
Pension Plans - U.S.
Schedule Of Pension And Other Postretirment Benefits Changes In Benefit Obligation And Fair Value Of Plan Assets [Line Items]
Total accumulated benefit obligation at end of period	349				767				349	767
Change in benefit obligation:
Benefit obligations at beginning of period				769				1,073	769	1,073
Service cost									2	2	4
Interest cost									37	42	59
Plan amendments									0	0
Actuarial (gain) loss									105	-133
Foreign currency exchange rate changes										0
Curtailment / settlement (gain) loss									-520	-153
Net transfer in / (out)									0	0
Benefits paid									-43	-62
Benefit obligations at end of period	350				769				350	769	1,073
Change in plan assets:
Fair value of plan assets at beginning of period				695				804	695	804
Actual return on plan assets, less plan expense									82	46
Foreign currency exchange rate changes									0	0
Company contributions									41	60
Settlements									-520	-153
Benefits paid									-43	-62
Fair value of plan assets at end of period	255				695				255	695	804
Funded status at end of period	-95				-74				-95	-74
United Kingdom Foreign Pension Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Changes In Benefit Obligation And Fair Value Of Plan Assets [Line Items]
Total accumulated benefit obligation at end of period	1,460				4,730				1,460	4,730
Change in benefit obligation:
Benefit obligations at beginning of period				4,729				4,730	4,729	4,730
Service cost									0	0	0
Interest cost									206	189	215
Plan amendments									7	0
Actuarial (gain) loss									1,384	-7
Foreign currency exchange rate changes									-321	95
Curtailment / settlement (gain) loss									-4,283	0
Net transfer in / (out)									0	0
Benefits paid									-262	-278
Benefit obligations at end of period	1,460				4,729				1,460	4,729	4,730
Change in plan assets:
Fair value of plan assets at beginning of period				5,763				5,552	5,763	5,552
Actual return on plan assets, less plan expense									1,022	320
Foreign currency exchange rate changes									-361	122
Company contributions									219	47
Settlements									-4,283	0
Benefits paid									-262	-278
Fair value of plan assets at end of period	2,098				5,763				2,098	5,763	5,552
Funded status at end of period	638				1,034				638	1,034
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Changes In Benefit Obligation And Fair Value Of Plan Assets [Line Items]
Total accumulated benefit obligation at end of period	754				865				754	865
Change in benefit obligation:
Benefit obligations at beginning of period				930				955	930	955
Service cost									21	23	19
Interest cost									34	36	38
Plan amendments									2	1
Actuarial (gain) loss									237	-34
Foreign currency exchange rate changes									-113	0
Curtailment / settlement (gain) loss									-224	0
Net transfer in / (out)										0
Benefits paid									-46	-51
Benefit obligations at end of period	841				930				841	930	955
Change in plan assets:
Fair value of plan assets at beginning of period				328				303	328	303
Actual return on plan assets, less plan expense									31	48
Foreign currency exchange rate changes									-26	-23
Company contributions									61	51
Settlements									-223	0
Benefits paid									-46	-51
Fair value of plan assets at end of period	125				328				125	328	303
Funded status at end of period	-716				-602				-716	-602
Postretirement Benefits Other than Pension - U.S.
Change in benefit obligation:
Benefit obligations at beginning of period				323				330	323	330
Service cost									0	1	1
Interest cost									15	14	16
Plan amendments									0	57
Actuarial (gain) loss									-23	-40
Foreign currency exchange rate changes									0	0
Plan participant contributions									1	1
Benefits paid									-28	-40
Benefit obligations at end of period	288				323				288	323	330
Change in plan assets:
Fair value of plan assets at beginning of period				0				0	0	0
Company contributions									27	39
Plan participant contributions									1	1
Benefits paid									-28	-40
Fair value of plan assets at end of period	0				0				0	0	0
Funded status at end of period	-288				-323				-288	-323
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Change in benefit obligation:
Benefit obligations at beginning of period				88				103	88	103
Service cost									1	1	1
Interest cost									4	4	5
Plan amendments									0	3
Actuarial (gain) loss									10	-10
Foreign currency exchange rate changes									-7	-6
Plan participant contributions									0	0
Benefits paid									-6	-7
Benefit obligations at end of period	90				88				90	88	103
Change in plan assets:
Fair value of plan assets at beginning of period				0				0	0	0
Company contributions									6	7
Plan participant contributions									0	0
Benefits paid									-6	-7
Fair value of plan assets at end of period	0				0				0	0	0
Funded status at end of period	($90)				($88)				($90)	($88)

Retirement_Benefits_Additional

Retirement Benefits - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans, curtailment (gain) loss	$1	($1)
EquitySecuritiesMember
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets	5.00%
DebtSecuritiesMember
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets	52.00%
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets	4.00%
Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage of assets	39.00%
Pension Plans - U.S.
Defined Benefit Plan Disclosure [Line Items]
Settlements of certain retirement plans	117	148	298
Defined benefit plans, settlement (gain) loss		35	88
Expected contribution by employer to its plans	0
United Kingdom Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlements of certain retirement plans	600
Expected contribution by employer to its plans	7
Cash Contribution for Pension Settlement	163
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of the U.S. and U.K plan assets of the total defined benefit plans	95.00%
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contribution by employer to its plans	29
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans, settlement (gain) loss		-1
Defined benefit plans, curtailment (gain) loss		-28	-36
Expected contribution by employer to its plans	32
Expected funding plans description	The Company funds its OPEB obligations on a pay-as-you-go basis. In 2015, the Company expects to contribute approximately $32 million to its OPEB plans.
Canada Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlements of certain retirement plans	73
Cash Contribution for Pension Settlement	$12

Retirement_Benefits_Amounts_Re

Retirement Benefits - Amounts Recognized in Consolidated Balance Sheets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]
Non-current assets	$663	$1,059
Pension Plans - U.S.
Defined Benefit Plan Disclosure [Line Items]
Non-current assets	2	2
Liabilities, held-for-sale	0	0
Current liabilities	0	0
Long-term liabilities	-97	-76
Net amount recognized	-95	-74
United Kingdom Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Non-current assets	638	1,034
Liabilities, held-for-sale	0	0
Current liabilities	0	0
Long-term liabilities	0	0
Net amount recognized	638	1,034
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Non-current assets	23	23
Liabilities, held-for-sale	-40	0
Current liabilities	-22	-25
Long-term liabilities	-677	-600
Net amount recognized	-716	-602
Postretirement Benefits Other than Pension - U.S.
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	-26	-30
Long-term liabilities	-262	-293
Net amount recognized	-288	-323
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	-6	-6
Long-term liabilities	-84	-82
Net amount recognized	($90)	($88)

Retirement_Benefits_Pretax_Amo

Retirement Benefits - Pre-tax Amounts Recognized in Accumulated Other Comprehensive Earnings (Losses) (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Pension Plans - U.S.
Schedule Of Pension And Other Postretirment Benefits Recgonized In Accumulated Other Comprehensive Income Loss [Line Items]
Prior service benefit (cost)	$0	$0
Net gain (loss)	-80	-132
Accumulated other comprehensive earnings (loss)	-80	-132
United Kingdom Foreign Pension Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Recgonized In Accumulated Other Comprehensive Income Loss [Line Items]
Prior service benefit (cost)	0	0
Net gain (loss)	-210	-144
Accumulated other comprehensive earnings (loss)	-210	-144
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Recgonized In Accumulated Other Comprehensive Income Loss [Line Items]
Prior service benefit (cost)	-4	-3
Net gain (loss)	-300	-197
Accumulated other comprehensive earnings (loss)	-304	-200
Postretirement Benefits Other than Pension - U.S.
Schedule Of Pension And Other Postretirment Benefits Recgonized In Accumulated Other Comprehensive Income Loss [Line Items]
Prior service benefit (cost)	50	58
Net gain (loss)	19	-2
Accumulated other comprehensive earnings (loss)	69	56
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Recgonized In Accumulated Other Comprehensive Income Loss [Line Items]
Prior service benefit (cost)	10	17
Net gain (loss)	-7	2
Accumulated other comprehensive earnings (loss)	$3	$19

Retirement_Benefits_Pension_Pl

Retirement Benefits - Pension Plans With Accumulated Benefit Obligation in Excess of Plan Assets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Pension Plans - U.S.
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$341	$748
Accumulated benefit obligation	339	746
Fair value of assets	244	672
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	752	636
Accumulated benefit obligation	665	572
Fair value of assets	$13	$11

Retirement_Benefits_Components

Retirement Benefits - Components of Net Benefit Cost (Income) and Other Amounts Recognized in Other Comprehensive (Earnings) Loss (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
Amortization or curtailment recognition of prior service benefit (cost)	($12)	($17)
Pension Plans - U.S.
Net pension cost (income) and Net postretirement benefit (income) cost:
Service cost	2	2	4
Interest cost	37	42	59
Expected return on plan assets	-49	-59	-80
Curtailment/Settlement (gain) loss	117	35	92
Amortization of prior service (benefit) cost	0	0	2
Amortization of net (gain) loss	8	27	19
Defined benefit plans	115	47	96
Defined contribution plans cost	23	22	22
Net defined benefit plan cost (income)	138	69	118
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
Prior service (benefit) cost	0	0	0
Net (gain) loss	72	-120	33
Amortization or curtailment recognition of prior service benefit (cost)	0	0	-2
Amortization or settlement recognition of net gain (loss)	-125	-62	-110
Total recognized in other comprehensive (earnings) loss	-53	-182	-79
Total recognized net defined benefit plan (income) cost and other comprehensive (earnings) loss	85	-113	39
United Kingdom Foreign Pension Plans Defined Benefit [Member]
Net pension cost (income) and Net postretirement benefit (income) cost:
Service cost	0	0	0
Interest cost	206	189	215
Expected return on plan assets	-341	-315	-328
Curtailment/Settlement (gain) loss	600	0	0
Amortization of prior service (benefit) cost	0	0	0
Amortization of net (gain) loss	0	0	0
Defined benefit plans	465	-126	-113
Defined contribution plans cost	4	3	3
Net defined benefit plan cost (income)	469	-123	-110
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
Prior service (benefit) cost	7	0	0
Net (gain) loss	703	-12	295
Amortization or curtailment recognition of prior service benefit (cost)	-7	0	0
Amortization or settlement recognition of net gain (loss)	-592	0	0
Total recognized in other comprehensive (earnings) loss	66	-9	293
Total recognized net defined benefit plan (income) cost and other comprehensive (earnings) loss	535	-132	183
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Net pension cost (income) and Net postretirement benefit (income) cost:
Service cost	21	23	19
Interest cost	34	36	38
Expected return on plan assets	-16	-20	-20
Curtailment/Settlement (gain) loss	72	0	2
Amortization of prior service (benefit) cost	1	1	0
Amortization of net (gain) loss	11	18	9
Defined benefit plans	123	58	48
Defined contribution plans cost	24	16	16
Net defined benefit plan cost (income)	147	74	64
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
Prior service (benefit) cost	2	-1	1
Net (gain) loss	223	-61	125
Amortization or curtailment recognition of prior service benefit (cost)	-1	1	-1
Amortization or settlement recognition of net gain (loss)	-84	-19	-11
Total recognized in other comprehensive (earnings) loss	104	-84	121
Total recognized net defined benefit plan (income) cost and other comprehensive (earnings) loss	251	-10	185
Postretirement Benefits Other than Pension - U.S.
Net pension cost (income) and Net postretirement benefit (income) cost:
Service cost	0	1	1
Interest cost	15	14	16
Curtailment/Settlement (gain) loss	0	-29	-36
Amortization of prior service (benefit) cost	-8	-13	-22
Amortization of net (gain) loss	-2	1	0
Net defined benefit plan cost (income)	5	-26	-41
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
Prior service (benefit) cost	0	57	0
Net (gain) loss	-23	-40	-6
Amortization or curtailment recognition of prior service benefit (cost)	8	31	51
Amortization or settlement recognition of net gain (loss)	2	9	6
Total recognized in other comprehensive (earnings) loss	-13	57	51
Total recognized net defined benefit plan (income) cost and other comprehensive (earnings) loss	-8	31	10
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Net pension cost (income) and Net postretirement benefit (income) cost:
Service cost	1	1	1
Interest cost	4	4	5
Curtailment/Settlement (gain) loss	0	0	0
Amortization of prior service (benefit) cost	-5	-5	-7
Amortization of net (gain) loss	0	1	1
Net defined benefit plan cost (income)	0	1	0
Other changes in plan assets and benefit obligations recognized in other comprehensive (earnings) loss
Prior service (benefit) cost	0	3	3
Net (gain) loss	10	-9	-8
Amortization or curtailment recognition of prior service benefit (cost)	5	5	6
Amortization or settlement recognition of net gain (loss)	1	0	-1
Total recognized in other comprehensive (earnings) loss	16	-1	0
Total recognized net defined benefit plan (income) cost and other comprehensive (earnings) loss	$16	$0	$0

Estimated_amounts_to_be_amorti

Estimated amounts to be amortized from Accumulated other Comprehensive Earnings Over Next Fiscal Year (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Pension Plans - U.S.
Defined Benefit Plan Disclosure [Line Items]
Prior service (benefit) cost	$0
Net (gain) loss	7
Total	7
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service (benefit) cost	1
Net (gain) loss	29
Total	30
Postretirement Benefits Other than Pension - U.S.
Defined Benefit Plan Disclosure [Line Items]
Prior service (benefit) cost	-7
Net (gain) loss	-4
Total	-11
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service (benefit) cost	-5
Net (gain) loss	0
Total	($5)

Retirement_Benefits_WeightedAv

Retirement Benefits - Weighted-Average Assumptions Used (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plans - U.S.
Schedule Of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	5.00%	4.00%	4.75%
Expected long-term return on plan assets	7.50%	7.75%	7.75%
Rate of increase in compensation levels	3.50%	5.00%	4.76%
Discount rate	4.25%	5.00%
Rate of increase in compensation levels	5.00%	3.50%
United Kingdom Foreign Pension Plans Defined Benefit [Member]
Schedule Of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	4.50%	4.25%	4.75%
Expected long-term return on plan assets	6.25%	6.25%	6.25%
Discount rate	3.75%	4.50%
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Schedule Of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	4.18%	3.90%	4.82%
Expected long-term return on plan assets	6.31%	6.53%	6.50%
Rate of increase in compensation levels	2.90%	2.90%	2.92%
Discount rate	2.41%	4.18%
Rate of increase in compensation levels	2.89%	2.90%
Postretirement Benefits Other than Pension - U.S.
Schedule Of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	5.00%	4.00%	4.75%
Discount rate	4.00%	5.00%
Initial health care cost trend rate at end of year	7.00%	6.90%
Ultimate health care cost trend rate	4.50%	5.00%
Year in which ultimate rate is reached	2022	2018
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Schedule Of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	4.75%	4.00%	4.50%
Discount rate	3.75%	4.75%
Initial health care cost trend rate at end of year	4.50%	4.00%
Ultimate health care cost trend rate	5.00%	5.00%
Year in which ultimate rate is reached	2017	2017

Retirement_Benefits_Fair_Value

Retirement Benefits - Fair Value of Company's United States and United Kingdom Pension Plan Assets, by Asset Category (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$1,390	$2,464
Fair Value Inputs Level 1 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	943	656
Fair Value Inputs Level 1 [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 1 [Member] | U.K. government guaranteed bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	359	1,724
Fair Value Inputs Level 1 [Member] | Equity Warrant Asset [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	86	80
Fair Value Inputs Level 1 [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	2	4
Fair Value Inputs Level 1 [Member] | Structured equity holdings [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 1 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 1 [Member] | All Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 1 [Member] | Asset-backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0
Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	963	3,994
Fair Value Inputs Level 2 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 2 [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	109	1,864
Fair Value Inputs Level 2 [Member] | U.K. government guaranteed bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 2 [Member] | Equity Warrant Asset [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 2 [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	0	0
Fair Value Inputs Level 2 [Member] | Structured equity holdings [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	114	916
Fair Value Inputs Level 2 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	99	148
Fair Value Inputs Level 2 [Member] | All Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	-24	-15
Fair Value Inputs Level 2 [Member] | Asset-backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$665	$1,081

Retirement_Benefits_Expected_F

Retirement Benefits - Expected Future Benefit Payments (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Pension Plans - U.S.
Schedule Of Pension And Other Postretirment Benefits Expected Benefit Payments [Line Items]
2015	$7
2016	36
2017	10
2018	11
2019	12
2020 - 2024	76
United Kingdom Foreign Pension Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Expected Benefit Payments [Line Items]
2015	29
2016	24
2017	26
2018	28
2019	32
2020 - 2024	225
Rest Of World Foreign Pension Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Expected Benefit Payments [Line Items]
2015	24
2016	26
2017	28
2018	30
2019	31
2020 - 2024	183
Postretirement Benefits Other than Pension - U.S.
Schedule Of Pension And Other Postretirment Benefits Expected Benefit Payments [Line Items]
2015	27
2016	26
2017	25
2018	24
2019	23
2020 - 2024	96
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Schedule Of Pension And Other Postretirment Benefits Expected Benefit Payments [Line Items]
2015	5
2016	5
2017	5
2018	5
2019	5
2020 - 2024	$28

Retirement_Benefits_OnePercent

Retirement Benefits - One-Percentage-Point Change in Assumed Health Care Cost Trend Rate (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Postretirement Benefits Other than Pension - U.S.
Assumed Health Care Cost Trend Rates Effect Of One Percentage Point Change [Line Items]
Effect on total of service and interest cost components for the year ended December 31, 2011, One-Percentage-Point increase	$1
Effect on postretirement benefit obligation as of measurement date, One-Percentage-Point increase	21
Effect on total of service and interest cost components for the year ended December 31, 2011, One-Percentage-Point decrease	-1
Effect on postretirement benefit obligation as of measurement date, One-Percentage-Point decrease	-18
Foreign Postretirement Benefit Plans Defined Benefit [Member]
Assumed Health Care Cost Trend Rates Effect Of One Percentage Point Change [Line Items]
Effect on total of service and interest cost components for the year ended December 31, 2011, One-Percentage-Point increase	0
Effect on postretirement benefit obligation as of measurement date, One-Percentage-Point increase	7
Effect on total of service and interest cost components for the year ended December 31, 2011, One-Percentage-Point decrease	0
Effect on postretirement benefit obligation as of measurement date, One-Percentage-Point decrease	($7)

Fair_Value_Measurements_Recurr

Fair Value Measurements - Recurring and Nonrecurring Basis (Detail) (Fair Value Measurements Recurring [Member], Fair Value Inputs Level 2 [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency contracts assets	$7	$6
Noncurrent Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency contracts assets	2	0
Current Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency contracts liabilities	13	5
Noncurrent Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency contracts liabilities	$13	$9

Financial_Instruments_Not_Carr

Financial Instruments - Not Carried at Fair Value (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	$222	$159
Exchangeable Notes	30	134
Carrying Reported Amount Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	222	159
Long-term debt	1,326	1,821
Exchangeable Notes	30	134
Portion At Fair Value Fair Value Disclosure [Member] | Fair Value Inputs Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	222	159
Long-term debt	1,389	1,884
Exchangeable Notes	$109	$375

Financial_Instruments_Addition

Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Foreign Exchange Forward [Member]
Derivative [Line Items]
Notional value	$2,600,000,000
Foreign Exchange Contract [Member]
Derivative [Line Items]
Effective portion of the gain (loss) on derivatives designated as cash flow hedges that was recognized in OCI	-6,000,000	-33,000,000	80,000,000
Cash Flow Hedging [Member]
Derivative [Line Items]
Gains (losses) included in OCI expected to be reclassified into earnings in the next twelve months, net of tax	-3,000,000
Effective portion of gain (loss) on hedges reclassified from OCI into the statements of earnings	-5,000,000	1,000,000	3,000,000
Effective portion of the gain (loss) on derivatives designated as cash flow hedges that was recognized in OCI	-6,000,000	-33,000,000	80,000,000
Nondesignated [Member] | Other Income And Expense [Member]
Derivative [Line Items]
Gain (loss) recognized in current earnings	($25,000,000)	($5,000,000)	$14,000,000

Financial_Instruments_Offsetti

Financial Instruments- Offsetting of Derivative Assets and Liabilities (Detail) (Foreign Exchange Contract [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Foreign Exchange Contract [Member]
Offsetting Assets [Line Items]
Derivative assets, gross amount recognized	$45	$42
Derivative assets, gross amounts offset	-36	-36
Derivative asets, net amounts reported	9	6
Derivative liabilities, gross amounts recognized	62	50
Derivative liabilities, gross amounts offset	-36	-36
Derivative liabilities, net amounts reported	$26	$14

Debt_Total_Outstanding_Debt_De

Debt- Total Outstanding Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Disclosure [Line Items]
Short-term debt	$222	$159
Long-term debt:
Exchangeable Notes	30	134
Revolving credit facility	0	0
Capitalized leases	14	18
Other borrowings	68	90
Total long-term debt	1,356	1,955
Less current portion	72	482
Long-term debt, net of current portion	1,284	1,473
Senior Notes 6.375% Due 2014 [Member]
Long-term debt:
Senior Notes	0	234
Senior Notes 4.50% Due 2021 [Member]
Long-term debt:
Senior Notes	400	400
Senior Notes 7.00% Due 2014 [Member]
Long-term debt:
Senior Notes	0	233
Senior Notes 7.25% Due 2017 [Member]
Long-term debt:
Senior Notes	444	446
Senior Notes 4.45% Due 2023 [Member]
Long-term debt:
Senior Notes	$400	$400

Debt_Total_Outstanding_Additio

Debt - Total Outstanding - Additional Information (Detail)	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Debt, Weighted Average Interest Rate	5.40%	5.90%

Debt_Maturities_of_LongTerm_De

Debt - Maturities of Long-Term Debt Outstanding (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Disclosure [Abstract]
2015	$72
2016	25
2017	448
2018	3
2019	3
Thereafter	805
Total long-term debt	$1,356	$1,955

Debt_Senior_Notes_Additional_I

Debt - Senior Notes - Additional Information (Detail)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2014

Sep. 26, 2014

Jun. 27, 2014

Mar. 28, 2014

Dec. 31, 2013

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2007

Feb. 28, 2013

Mar. 31, 2007

Mar. 31, 2007

Nov. 30, 2013

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Senior Notes [Member]

Senior Notes [Member]

Senior Notes 6.375% Due 2014 [Member]

Senior Notes 4.50% Due 2021 [Member]

Senior Notes 7.00% Due 2014 [Member]

Senior Notes 7.25% Due 2017 [Member]

Senior Notes 4.45% Due 2023 [Member]

USD ($)

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

Debt Disclosure [Line Items]

Face amount

€ 170

$400

$233

$600

$400

Interest rate

6.38%

4.50%

7.00%

7.25%

4.45%

Amount of debt repurchased

91

48

Loss (gain) on retirement of debt - net

7

0

0

0

15

0

5

0

7

20

6

5

5

Proceeds from issuance of long-term debt, net of fees

$13

$881

$3

Debt_Exchangeable_Senior_Notes

Debt - Exchangeable Senior Notes - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended			1 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 30, 2009
Debt Disclosure [Line Items]
Exchangeable Senior Notes pricipal amount exchanged for shares of company stock									$117	$26
Number of shares of Company stock issued in exchange for notes being converted									3,937,079	880,350
Gain (loss) on retirement of debt - net	-7	0	0	0	-15	0	-5	0	-7	-20	-6
Exchangeable Senior Unsecured Notes Three Point Five Zero Percent Due Twenty Fifteen [Member]
Debt Disclosure [Line Items]
Face amount												259
Interest rate												3.50%
Exchange rate of shares of the Company's common stock per $1,000 principal amount of notes												33.8392
Effective yield												9.00%
Debt discount	1				14				1	14
Interest expense recognized									11	13	13
Interest expense on exchangeable notes, excluding amortization									5	6	6
Exchangeable notes sales price condition												$38.41
Exchangeable Senior Notes pricipal amount exchanged for shares of company stock									116	26
Number of shares of Company stock issued in exchange for notes being converted									3,937,079	880,350
Gain (loss) on retirement of debt - net									-7	-3
Equity component of 3.5% exchangeable note repurchase									$289	$37

Debt_Senior_Credit_Facilities_

Debt - Senior Credit Facilities - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Debt Disclosure [Line Items]
Revolving credit facility, facility size	$1,400,000,000								$1,400,000,000
Gain (loss) on retirement of debt - net	-7,000,000	0	0	0	-15,000,000	0	-5,000,000	0	-7,000,000	-20,000,000	-6,000,000
Fees paid to refinance credit facility									0	0	9,000,000
Revolving Credit Facility [Member]
Debt Disclosure [Line Items]
Line of Credit Facility, Description									The Revolving Credit Facility will mature on September 28, 2017; provided that if, as of the last fiscal day of October 2016, an aggregate amount of the 7.25% Senior Notes in excess of $100 million remains outstanding and the amount of available liquidity does not exceed the aggregate amount of cash necessary to redeem the 7.25% Senior Notes by at least $500 million, then the maturity date of the Revolving Credit Facility will be 20 business days after such date.
Gain (loss) on retirement of debt - net											($1,000,000)
Commitment fee									0.25%
Revolving Credit Facility [Member] | Base Rate [Member]
Debt Disclosure [Line Items]
Applicable margin	0.25%								0.25%
Revolving Credit Facility [Member] | Euro Denominated [Member]
Debt Disclosure [Line Items]
Applicable margin	1.25%								1.25%

Debt_Other_Borrowings_Detail

Debt- Other Borrowings (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Debt Disclosure [Abstract]
Short-term borrowings under uncommited credit agreements	$221

Restructuring_Charges_and_Asse2

Restructuring Charges and Asset Impairments (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost And Reserve [Line Items]
Severance and other charges	$66	$56	$91
Curtailment losses (gains) - net	-1	1
Asset impairments related to restructuring activities	12	2	2
Total restructuring charges	77	59	93
Other asset impairments	7	7	2
Total restructuring charges and asset impairments	84	66	95
Chassis Systems [Member]
Restructuring Cost And Reserve [Line Items]
Severance and other charges	55	22	64
Curtailment losses (gains) - net	-1	1
Asset impairments related to restructuring activities	12	0	2
Total restructuring charges	66	23	66
Other asset impairments	7	4	2
Total restructuring charges and asset impairments	73	27	68
Occupant Safety Systems [Member]
Restructuring Cost And Reserve [Line Items]
Severance and other charges	7	36	20
Curtailment losses (gains) - net	0	0
Asset impairments related to restructuring activities	0	1	0
Total restructuring charges	7	37	20
Other asset impairments	0	0	0
Total restructuring charges and asset impairments	7	37	20
Electronics [Member]
Restructuring Cost And Reserve [Line Items]
Severance and other charges	0	0	0
Curtailment losses (gains) - net	0	0
Asset impairments related to restructuring activities	0	0	0
Total restructuring charges	0	0	0
Other asset impairments	0	1	0
Total restructuring charges and asset impairments	0	1	0
Automotive Components [Member]
Restructuring Cost And Reserve [Line Items]
Severance and other charges	4	-3	7
Curtailment losses (gains) - net	0	0
Asset impairments related to restructuring activities	0	1	0
Total restructuring charges	4	-2	7
Other asset impairments	0	2	0
Total restructuring charges and asset impairments	4	0	7
Corporate [Member]
Restructuring Cost And Reserve [Line Items]
Severance and other charges	0	1	0
Curtailment losses (gains) - net	0	0
Asset impairments related to restructuring activities	0	0	0
Total restructuring charges	0	1	0
Other asset impairments	0	0	0
Total restructuring charges and asset impairments	$0	$1	$0

Restructuring_Charges_and_Asse3

Restructuring Charges and Asset Impairments - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	$77	$59	$93
Restructuring charges related global workforce reduction	23	28	58
Restructuring charges related the closure or announced closure of various facilities	54	31	35
Asset impairments related to restructuring activities	12	2	2
Write-down of investments	0	0	0
Other fixed asset impairments	7	7	2
Restructuring reserve	74	88	121
Restructuring reserve expected to be paid within one year	70
Machinery And Equipment [Member]
Restructuring Cost And Reserve [Line Items]
Other fixed asset impairments	7	6	2
Building [Member]
Restructuring Cost And Reserve [Line Items]
Other fixed asset impairments	$0	$1	$0

Restructuring_Charges_and_Asse4

Restructuring Charges and Asset Impairments - Movement of Restructuring Reserves for Severance and Other Charges Including Reserves Related to Severance-Related Postemployment Benefits (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Restructuring Charges and Asset Impairments [Abstract]
Beginning balance	$88	$121
Current period accruals, net of changes in estimates	66	56
Liabilities held-for-sale	-2	0
Used for purposes intended	-69	-95
Effects of foreign currency translation	-9	6
Ending balance	$74	$88

Lease_Commitments_Additional_I

Lease Commitments - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
Rental expense for operating leases	$110	$111	$112

Lease_Commitments_Future_Minim

Lease Commitments - Future Minimum Lease Payments for Noncancelable Capital and Operating Leases (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Capital Leases
2015	$3
2016	3
2017	3
2018	3
2019	2
Thereafter	3
Total minimum payments required	17
Less amounts representing interest	3
Present value of net minimum capital lease payments	14
Less current installments	2
Obligations under capital leases, excluding current installments	12
Operating Leases
2015	60
2016	51
2017	47
2018	43
2019	48
Thereafter	54
Total minimum payments required	$303

Transaction_Costs_Detail

Transaction Costs (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Transaction Costs [Abstract]
Transaction Costs	$20	$0	$0

Capital_Stock_Additional_Infor

Capital Stock - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended	3 Months Ended
	Sep. 26, 2014	Dec. 31, 2014	Mar. 28, 2014
Stockholders Equity Note [Line Items]
Common stock, shares authorized		500,000,000
Common stock, par value		$0.01
Common stock, shares outstanding		114,547,079
Treasury stock, shares		4,668
Preferred stock, shares authorized		250,000,000
Preferred stock, par value		$0.01
Average cost of shares repurchased	$88.08
$2 Billion Share Repurchase Program [Member]
Stockholders Equity Note [Line Items]
Number of shares repurchased		3,100,000
Stock Repurchase Program Authorized Amount		$2,000,000,000
Anti Dilution Program [Member]
Stockholders Equity Note [Line Items]
Number of shares repurchased		1,500,000
Stock Repurchase Program Authorized Shares		1,500,000
ASR March 2014 [Member]
Stockholders Equity Note [Line Items]
Number of shares repurchased	700,000		3,900,000
Value of capital stock repurchased			$400,000,000
Series A Preferred Stock [Member]
Stockholders Equity Note [Line Items]
Preferred stock, shares authorized		500,000
Preferred stock, shares issued		0
Preferred stock, shares outstanding		0

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Maximum number of shares authorized under stock incentive plan	6,150,000
Common stock available for issuance under the Plan	3,379,736
Options outstanding	214,663
Equity instruments other than options outstanding	676,000	805,000
Weighted-average grant-date fair value of SSARs and stock options granted	$9.29	$7.23	$6.58
Total intrinsic value of SSARs and stock options exercised	$85	$57	$26
Total fair value of restricted stock units vested	32	26	22
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan	24
Unrecognized compensation cost related to nonvested share-based compensation weighted-average period of recognition	2 years
Share based compensation expense	36	36	21
Stock Appreciation Rights S A R S [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Equity instruments other than options outstanding	2,320,699
Contractual term	8 years
Vesting period	3 years
Restricted Stock Units RSUs [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Equity instruments other than options outstanding	676,131
Vesting period	3 years
Share based compensation expense	24	26	16
Restricted Stock Units RSUs [Member] | Retirement Eligible Employees [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Equity instruments other than options outstanding	142,911
Stock Options [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Contractual term	8 years
Vesting period	3 years
Incentive Compensation Cash Award [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share based compensation expense	0	1	4
Phantom Stock Units [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Equity instruments other than options outstanding	12,650
Vesting period	3 years
Performance Units
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Equity instruments other than options outstanding	70,425
Vesting period	3 years
Share based compensation expense	$3	$0	$0

ShareBased_Compensation_Signif

Share-Based Compensation - Significant Equity Award Grants (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Feb. 21, 2014	Feb. 22, 2013	Feb. 23, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number Granted	299,000
Exercise price	$82.44
Stock Appreciation Rights S A R S [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number Granted		850,900	1,199,551	1,282,518
Exercise price		$82.50	$58.20	$45.11
Maximum value		$130	$110	$95
Restricted Stock Units RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number Granted		284,723	428,169	515,523

ShareBased_Compensation_ShareB

Share-Based Compensation - Share-Based Compensation Expense (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share based compensation expense	$36	$36	$21
Stock Settled Stock Appreciation Rights And Employee Stock Options [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share based compensation expense	9	10	5
Restricted Stock Units RSUs [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share based compensation expense	24	26	16
Performance Units
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share based compensation expense	$3	$0	$0

ShareBased_Compensation_Fair_V

Share-Based Compensation - Fair Value SSARs and Stock Options Estimated Using Black-Scholes Option Pricing (Detail) (Stock Settled Stock Appreciation Rights And Employee Stock Options [Member])	0 Months Ended
	Feb. 21, 2014	Feb. 22, 2013	Feb. 23, 2012
Stock Settled Stock Appreciation Rights And Employee Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Method Used [Line Items]
Expected volatility	61.10%	79.30%	79.30%
Dividend yield	0.00%	0.00%	0.00%
Expected life	5 years	5 years	5 years
Risk-free rate	1.53%	0.83%	0.89%

ShareBased_Compensation_Summar

Share-Based Compensation - Summary of SSAR and Stock Option Activity Under Plan and Changes During Year (Detail) (USD $)	12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2014
	y
Options and SSARs
Outstanding at beginning of period	3,572
Granted	851
Exercised	1,786
Forfeited or expired	102
Outstanding at end of period	2,535
Exercisable at end of period	577
Weighted- Average Exercise Price
Outstanding at beginning of period	$47.88
Granted	$82.50
Exercised	$45.89
Forfeited or expired	$52.09
Outstanding at end of period	$60.73
Exercisable at end of period	$42.01
Weighted- Average Remaining Contractual Term
Outstanding at end of period	6
Exercisable at end of period	4.5
Aggregate Intrinsic Value
Outstanding at end of period	$104
Exercisable at end of period	$35

ShareBased_Compensation_Summar1

Share-Based Compensation - Summary of Nonvested Restricted Stock Units (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014
Restricted Stock Units
Nonvested at beginning of period	805
Granted	299
Vested	384
Forfeited	44
Nonvested at end of period	676
Weighted-Average Grant-Date Fair Value
Nonvested at beginning of period	$52.96
Granted	$82.44
Vested	$52.36
Forfeited	$59.66
Nonvested at end of period	$65.92

Contingencies_Additional_Infor

Contingencies - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
Reserves for environmental matters	$71	$68
Northrop indemnification percentage	50.00%

Segment_Information_Additional

Segment Information - Additional Information (Detail)	Dec. 31, 2014
	segment
Segment Information [Abstract]
Number of reportable segments	4

Segment_Information_Financial_

Segment Information - Financial Information by Segment (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Sales	$4,348	$4,156	$4,593	$4,442	$4,496	$4,212	$4,514	$4,213	$17,539	$17,435	$16,444
Intersegment and Segment Sales									18,377	18,197	17,148
Interest expense - net									-109	-132	-111
Gain (loss) on retirement of debt - net	-7	0	0	0	-15	0	-5	0	-7	-20	-6
Net earnings attributable to noncontrolling interest, net of tax									41	37	33
Earnings before income taxes	-502	278	367	287	261	268	357	235	430	1,121	1,008
Capital expenditures									694	735	623
Depreciation and amortization									444	430	409
Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Intersegment and Segment Sales									838	762	704
Corporate [Member]
Segment Reporting Information [Line Items]
Earnings before taxes									-920	-120	-78
Capital expenditures									12	5	8
Depreciation and amortization									5	3	3
Chassis Systems [Member]
Segment Reporting Information [Line Items]
Sales									11,354	11,492	10,685
Intersegment and Segment Sales									11,370	11,506	10,705
Earnings before taxes									831	841	669
Capital expenditures									418	461	364
Depreciation and amortization									250	243	228
Chassis Systems [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Intersegment and Segment Sales									16	14	20
Occupant Safety Systems [Member]
Segment Reporting Information [Line Items]
Sales									3,357	3,314	3,287
Intersegment and Segment Sales									3,496	3,444	3,377
Earnings before taxes									282	239	254
Capital expenditures									118	112	104
Depreciation and amortization									83	79	80
Occupant Safety Systems [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Intersegment and Segment Sales									139	130	90
Electronics [Member]
Segment Reporting Information [Line Items]
Sales									937	721	654
Intersegment and Segment Sales									1,546	1,264	1,168
Earnings before taxes									144	126	132
Capital expenditures									70	80	61
Depreciation and amortization									51	42	38
Electronics [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Intersegment and Segment Sales									609	543	514
Automotive Components [Member]
Segment Reporting Information [Line Items]
Sales									1,891	1,908	1,818
Intersegment and Segment Sales									1,965	1,983	1,898
Earnings before taxes									168	150	115
Capital expenditures									76	77	86
Depreciation and amortization									55	63	60
Automotive Components [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Intersegment and Segment Sales									74	75	80
Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings before taxes									$1,425	$1,356	$1,170

Segment_Information_Certain_Ba

Segment Information - Certain Balance Sheet Information by Segment (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Segment Reporting Information [Line Items]
Segment assets	$10,728	$11,712
Net deferred tax assets	566	540
Total assets	11,294	12,252
Corporate [Member]
Segment Reporting Information [Line Items]
Segment assets	812	2,047
Chassis Systems [Member]
Segment Reporting Information [Line Items]
Segment assets	5,842	5,632
Occupant Safety Systems [Member]
Segment Reporting Information [Line Items]
Segment assets	2,024	2,162
Electronics [Member]
Segment Reporting Information [Line Items]
Segment assets	1,247	1,019
Automotive Components [Member]
Segment Reporting Information [Line Items]
Segment assets	803	852
Operating Segments [Member]
Segment Reporting Information [Line Items]
Segment assets	$9,916	$9,665

Segment_Information_Certain_In

Segment Information - Certain Information Concerning Principal Geographic Areas (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Sales	$4,348	$4,156	$4,593	$4,442	$4,496	$4,212	$4,514	$4,213	$17,539	$17,435	$16,444
Property, plant and equipment, net	2,645				2,718				2,645	2,718	2,385
United States [Member]
Segment Reporting Information [Line Items]
Sales									4,496	4,992	4,713
Property, plant and equipment, net	567				534				567	534	563
Germany [Member]
Segment Reporting Information [Line Items]
Sales									2,097	2,199	2,330
Property, plant and equipment, net	394				430				394	430	403
Rest Of World [Member]
Segment Reporting Information [Line Items]
Sales									7,815	7,486	7,200
Property, plant and equipment, net	1,119				1,276				1,119	1,276	1,062
China [Member]
Segment Reporting Information [Line Items]
Sales									3,131	2,758	2,201
Property, plant and equipment, net	$565				$478				$565	$478	$357

Segment_Information_Sales_to_C

Segment Information - Sales to Company's Largest-End-Customers on Worldwide Basis (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Entity Wide Revenue Major Customer [Line Items]
Sales	$4,348	$4,156	$4,593	$4,442	$4,496	$4,212	$4,514	$4,213	$17,539	$17,435	$16,444
Aggregate Percent of Total Sales									64.90%	66.80%	65.10%
Volkswagen Aktiengesellschaft [Member]
Entity Wide Revenue Major Customer [Line Items]
Sales									4,525	4,298	3,863
Ford Motor Company [Member]
Entity Wide Revenue Major Customer [Line Items]
Sales									3,210	3,234	2,897
General Motors [Member]
Entity Wide Revenue Major Customer [Line Items]
Sales									1,288	1,757	1,649
Fiat Chrysler Automobiles NV [Member]
Entity Wide Revenue Major Customer [Line Items]
Sales									$2,368	$2,359	$2,290

Unconsolidated_Affiliates_Comp

Unconsolidated Affiliates - Company's Beneficial Ownership in Affiliates Under Equity Method (Detail)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	30.00%
Sm Sistemas Modulares Limited Brazil [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%
Abc Sistemas E Modulos Limited Brazil [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	33.00%	33.00%	33.00%
Csg Trw Chassis Systems Company Limited China [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%
Shanghai Trw Automotive Safety Systems Company Limited China [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%
Shin Han Beijing Automobile Parts System Company Limited China [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	30.00%	30.00%	30.00%
Fuji Valve Guangdong Company Limited China [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	25.00%	25.00%	25.00%
Th Braking Co Sas France [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%
Rane Trw Steering Systems Ltd India [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%
Brakes India Limited India [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.00%	49.00%	49.00%
Trw Sun Steering Wheels Private Ltd India [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.00%	49.00%	49.00%
Shin Han Valve Industrial Company Limited Korea [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	25.00%	25.00%	25.00%
Components Venezolanos De Direccion Sociedad Anonima Venezuela [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	40.00%	40.00%	40.00%
Evercast SA de CV Mexico [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	30.00%	0.00%	0.00%

Unconsolidated_Affiliates_Inve

Unconsolidated Affiliates - Investment in affiliate (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Unconsolidated Affiliates [Abstract]
Investment in affiliates	$231	$207

Quarterly_Financial_Informatio2

Quarterly Financial Information (Unaudited) (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information (Unaudited) [Abstract]
Sales	$4,348	$4,156	$4,593	$4,442	$4,496	$4,212	$4,514	$4,213	$17,539	$17,435	$16,444
Gross profit	524	475	567	500	522	450	531	427	2,066	1,930	1,789
Pension and postretirement benefit settlement and curtailment expenses	790	0	0	0	31	0	0	0	790	31	52
Restructuring charges and asset impairments	48	10	6	20	23	5	1	37	84	66	95
Loss (gain) on retirement of debt - net	7	0	0	0	15	0	5	0	7	20	6
Earnings (losses) before income taxes	-502	278	367	287	261	268	357	235	430	1,121	1,008
Net earnings (losses) attributable to TRW	($360)	$189	$265	$199	$363	$197	$248	$162	$293	$970	$1,008
Basic earnings (losses) per share	($3.22)	$1.70	$2.39	$1.76	$3.15	$1.68	$2.09	$1.35	$2.62	$8.25	$8.24
Diluted earnings (losses) per share	($3.22)	$1.61	$2.27	$1.68	$3	$1.60	$1.99	$1.29	$2.54	$7.85	$7.83

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance For Doubtful Accounts [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$29	$30	$38
Charged to Costs and Expenses	4	4	-1
Charged (Credited) to Other Accounts	0	0	0
Deductions	7	5	7
Balance at End of Period	26	29	30
Valuation Allowance Of Deferred Tax Assets [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	295	250	273
Charged to Costs and Expenses	7	17	-63
Charged (Credited) to Other Accounts	-28	28	40
Deductions	0	0	0
Balance at End of Period	$274	$295	$250