Celanese (CE) 10-Q 21 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 16, 2014
Document And Entity Information [Abstract]	'	'
Entity Registrant Name	'CELANESE CORPORATION	'
Entity Central Index Key	'0001306830	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	153,632,466
Entity Current Reporting Status	'Yes	'

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net sales	$1,769	$1,636	$5,243	$4,894
Cost of sales	-1,333	-1,290	-4,021	-3,896
Gross profit	436	346	1,222	998
Selling, general and administrative expenses	-118	-97	-341	-316
Amortization of intangible assets	-5	-6	-16	-26
Research and development expenses	-22	-24	-68	-73
Other (charges) gains, net	20	-4	21	-11
Foreign exchange gain (loss), net	1	-2	-1	-5
Gain (loss) on disposition of businesses and assets, net	-2	-2	-5	-3
Operating profit (loss)	310	211	812	564
Equity in net earnings (loss) of affiliates	52	41	193	150
Interest expense	-41	-43	-120	-130
Refinancing expense	-4	-1	-4	-1
Interest income	3	0	5	1
Dividend income - cost investments	29	22	87	69
Other income (expense), net	-2	-2	-1	1
Earnings (loss) from continuing operations before tax	347	228	972	654
Income tax (provision) benefit	-90	-57	-262	-209
Earnings (loss) from continuing operations	257	171	710	445
Earnings (loss) from operation of discontinued operations	-7	1	-8	3
Gain (loss) on disposition of discontinued operations	0	0	0	0
Income tax (provision) benefit from discontinued operations	2	0	3	-1
Earnings (loss) from discontinued operations	-5	1	-5	2
Net earnings (loss)	252	172	705	447
Net (earnings) loss attributable to noncontrolling interests	1	0	3	0
Net earnings (loss) attributable to Celanese Corporation	253	172	708	447
Amounts attributable to Celanese Corporation	'	'	'	'
Earnings (loss) from continuing operations	258	171	713	445
Earnings (loss) from discontinued operations	-5	1	-5	2
Net earnings (loss)	$253	$172	$708	$447
Earnings (loss) per common share - basic	'	'	'	'
Continuing operations	$1.67	$1.08	$4.58	$2.80
Discontinued operations	($0.03)	$0.01	($0.03)	$0.01
Net earnings (loss) - basic	$1.64	$1.09	$4.55	$2.81
Earnings (loss) per common share - diluted	'	'	'	'
Continuing operations	$1.66	$1.07	$4.56	$2.79
Discontinued operations	($0.03)	$0.01	($0.03)	$0.01
Net earnings (loss) - diluted	$1.63	$1.08	$4.53	$2.80
Weighted average shares - basic	154,427,554	158,501,075	155,552,777	159,282,314
Weighted average shares - diluted	155,174,528	159,095,531	156,325,511	159,846,593

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net earnings (loss)	$252	$172	$705	$447
Other comprehensive income (loss), net of tax	'	'	'	'
Unrealized gain (loss) on marketable securities	0	1	0	1
Foreign currency translation	-124	42	-141	37
Gain (loss) from cash flow hedges	-5	1	-11	4
Pension and postretirement benefits	-8	0	-34	0
Total other comprehensive income (loss), net of tax	-137	44	-186	42
Total comprehensive income (loss), net of tax	115	216	519	489
Comprehensive (income) loss attributable to noncontrolling interests	1	0	3	0
Comprehensive income (loss) attributable to Celanese Corporation	$116	$216	$522	$489

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current Assets	'	'
Cash and cash equivalents (variable interest entity restricted - 2014: $6)	$1,510	$984
Trade receivables - third party and affiliates (net of allowance for doubtful accounts - 2014: $9; 2013: $9)	1,016	867
Non-trade receivables, net	200	343
Inventories	771	804
Deferred income taxes	111	115
Marketable securities, at fair value	36	41
Other assets	43	28
Total current assets	3,687	3,182
Investments in affiliates	857	841
Property, plant and equipment (net of accumulated depreciation - 2014: $1,785; 2013: $1,672; variable interest entity restricted - 2014: $388)	3,618	3,425
Deferred income taxes	296	289
Other assets (variable interest entity restricted - 2014: $24)	365	341
Goodwill	756	798
Intangible assets (net of accumulated amortization - 2014: $567; 2013: $588)	131	142
Total assets	9,710	9,018
Current Liabilities	'	'
Short-term borrowings and current installments of long-term debt - third party and affiliates	765	177
Trade payables - third party and affiliates	816	799
Other liabilities	483	541
Deferred income taxes	10	10
Income taxes payable	115	18
Total current liabilities	2,189	1,545
Long-term debt	2,639	2,887
Deferred income taxes	225	225
Uncertain tax positions	150	200
Benefit obligations	1,077	1,175
Other liabilities	295	287
Commitments and Contingencies	'	'
Stockholders' Equity	'	'
Preferred stock, $0.01 par value, 100,000,000 shares authorized (2014 and 2013: 0 issued and outstanding)	0	0
Treasury stock, at cost (2014: 12,443,438 shares; 2013: 8,928,137 shares)	-562	-361
Additional paid-in capital	83	53
Retained earnings	3,613	3,011
Accumulated other comprehensive income (loss), net	-190	-4
Total Celanese Corporation stockholders' equity	2,944	2,699
Noncontrolling interests	191	0
Total equity	3,135	2,699
Total liabilities and equity	9,710	9,018
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2014: 166,075,904 issued and 153,632,466 outstanding; 2013: 165,867,965 issued and 156,939,828 outstanding)	'	'
Stockholders' Equity	'	'
Common stock	0	0
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2014 and 2013: 0 issued and outstanding)	'	'
Stockholders' Equity	'	'
Common stock	$0	$0

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Current Assets	'		'
Cash and cash equivalents	$1,510		$984
Allowance for doubtful accounts - trade receivables	9		9
Accumulated depreciation	1,785		1,672
Property, plant and equipment	3,618		3,425
Other assets	365		341
Finite-Lived Intangible Assets, Accumulated Amortization	567		588
Stockholders' Equity	'		'
Preferred stock, par value	$0.01		$0.01
Preferred stock, shares authorized	100,000,000		100,000,000
Preferred stock, shares issued	0		0
Preferred stock, shares outstanding	0		0
Treasury stock, shares	12,443,438		8,928,137
Common stock, par value	$0.00		'
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2014: 166,075,904 issued and 153,632,466 outstanding; 2013: 165,867,965 issued and 156,939,828 outstanding)	'		'
Stockholders' Equity	'		'
Common stock, par value	$0.00		$0.00
Common stock, shares authorized	400,000,000		400,000,000
Common stock, shares issued	166,075,904		165,867,965
Common stock, shares outstanding	153,632,466		156,939,828
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2014 and 2013: 0 issued and outstanding)	'		'
Stockholders' Equity	'		'
Common stock, par value	$0.00		$0.00
Common stock, shares authorized	100,000,000		100,000,000
Common stock, shares issued	0		0
Common stock, shares outstanding	0		0
Variable Interest Entity, Primary Beneficiary [Member]	'		'
Current Assets	'		'
Cash and cash equivalents	6		'
Property, plant and equipment	388		'
Other assets	$24	[1]	'
[1]	Includes prepaid intangible assets with a weighted average amortization period of 28 years.

Consolidated_Statement_Equity

Consolidated Statement Equity (USD $)	Total	Total Celanese Corporation Stockholders' Equity [Member]	Series A Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
In Millions, except Share data
Balance as of the beginning of the period at Dec. 31, 2013	$2,699	'	$0	($361)	$53	$3,011	($4)	$0
Balance as of the beginning of the period, shares at Dec. 31, 2013	'	'	156,939,828	8,928,137	'	'	'	'
Stock option exercises, shares	'	'	177,499	'	'	'	'	'
Stock option exercises, net of tax	'	'	0	'	4	'	'	'
Purchases of treasury stock, shares	'	'	-3,515,301	'	'	'	'	'
Purchases of treasury stock, including related fees	'	'	0	'	'	'	'	'
Stock awards, shares	'	'	30,440	'	'	'	'	'
Stock awards	'	'	0	'	'	'	'	'
Purchases of treasury stock, shares	3,515,301	'	'	3,515,301	'	'	'	'
Purchases of treasury stock, including related fees	-201	'	'	-201	'	'	'	'
Stock-based compensation, net of tax	'	'	'	'	26	'	'	'
Net earnings (loss) attributable to Celanese Corporation	708	'	'	'	'	708	'	'
Series A common stock dividends	'	'	'	'	'	-106	'	'
Other comprehensive income (loss), net of tax	-186	'	'	'	'	'	-186	'
Net earnings (loss) attributable to noncontrolling interests	-3	'	'	'	'	'	'	-3
Contributions from noncontrolling interests	'	'	'	'	'	'	'	194
Balance as of the end of the period at Sep. 30, 2014	3,135	'	0	-562	83	3,613	-190	191
Total Celanese Corporation stockholders' equity at Sep. 30, 2014	$2,944	$2,944	'	'	'	'	'	'
Balance as of the end of the period, shares at Sep. 30, 2014	'	'	153,632,466	12,443,438	'	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Operating Activities	'	'
Net earnings (loss)	$705	$447
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities	'	'
Asset impairments	0	2
Depreciation, amortization and accretion	226	238
Pension and postretirement net periodic benefit cost	-85	-16
Pension and postretirement contributions	-83	-49
Deferred income taxes, net	-8	7
(Gain) loss on disposition of businesses and assets, net	5	2
Stock-based compensation	26	18
Undistributed earnings in unconsolidated affiliates	-51	-47
Other, net	15	7
Operating cash provided by (used in) discontinued operations	5	-5
Changes in operating assets and liabilities	'	'
Trade receivables - third party and affiliates, net	-175	-113
Inventories	7	-34
Other assets	22	-82
Trade payables - third party and affiliates	45	100
Other liabilities	142	133
Net cash provided by (used in) operating activities	796	608
Investing Activities	'	'
Capital expenditures on property, plant and equipment	-189	-199
Acquisitions, net of cash acquired	0	0
Capital expenditures related to Kelsterbach plant relocation	0	-6
Capital expenditures related to Fairway Methanol LLC	-275	-60
Other, net	-13	-38
Net cash provided by (used in) investing activities	-477	-290
Financing Activities	'	'
Short-term borrowings (repayments), net	12	-12
Proceeds from short-term debt	47	154
Repayments of short-term debt	-70	-51
Proceeds from long-term debt	387	74
Repayments of long-term debt	-19	-192
Purchases of treasury stock, including related fees	-201	-102
Stock option exercises	4	3
Series A common stock dividends	-106	-55
Contributions from noncontrolling interests	194	0
Other, net	-11	-2
Net cash provided by (used in) financing activities	237	-183
Exchange rate effects on cash and cash equivalents	-30	6
Net increase (decrease) in cash and cash equivalents	526	141
Cash and cash equivalents as of beginning of period	984	959
Cash and cash equivalents as of end of period	$1,510	$1,100

Description_of_the_Company_and

Description of the Company and Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Description of the Company and Basis of Presentation	'
	Description of the Company and Basis of Presentation
	Description of the Company
	Celanese Corporation and its subsidiaries (collectively, the "Company") is a global technology and specialty materials company. The Company's business involves processing chemical raw materials, such as methanol, carbon monoxide and ethylene, and natural products, including wood pulp, into value-added chemicals, thermoplastic polymers and other chemical-based products.
	Definitions
	In this Quarterly Report on Form 10-Q ("Quarterly Report"), the term "Celanese" refers to Celanese Corporation, a Delaware corporation, and not its subsidiaries. The term "Celanese US" refers to the Company's subsidiary, Celanese US Holdings LLC, a Delaware limited liability company, and not its subsidiaries.
	Basis of Presentation
	The unaudited interim consolidated financial statements for the three and nine months ended September 30, 2014 and 2013 contained in this Quarterly Report were prepared in accordance with accounting principles generally accepted in the United States of America ("US GAAP") for all periods presented and include the accounts of the Company, its majority owned subsidiaries over which the Company exercises control and, when applicable, variable interest entities in which the Company is the primary beneficiary. The unaudited interim consolidated financial statements and other financial information included in this Quarterly Report, unless otherwise specified, have been presented to separately show the effects of discontinued operations.
	In the opinion of management, the accompanying unaudited consolidated balance sheets and related unaudited interim consolidated statements of operations, comprehensive income (loss), cash flows and equity include all adjustments, consisting only of normal recurring items necessary for their fair presentation in conformity with US GAAP. Certain information and footnote disclosures normally included in financial statements prepared in accordance with US GAAP may have been condensed or omitted in accordance with rules and regulations of the Securities and Exchange Commission ("SEC"). These unaudited interim consolidated financial statements should be read in conjunction with the Company's consolidated financial statements as of and for the year ended December 31, 2013, filed on February 7, 2014 with the SEC as part of the Company's Annual Report on Form 10-K.
	Operating results for the three and nine months ended September 30, 2014 are not necessarily indicative of the results to be expected for the entire year.
	In the ordinary course of business, the Company enters into contracts and agreements relative to a number of topics, including acquisitions, dispositions, joint ventures, supply agreements, product sales and other arrangements. The Company endeavors to describe those contracts or agreements that are material to its business, results of operations or financial position. The Company may also describe some arrangements that are not material but in which the Company believes investors may have an interest or which may have been included in a Form 8-K filing. Investors should not assume the Company has described all contracts and agreements relative to the Company's business in this Quarterly Report.
	For those consolidated ventures in which the Company owns or is exposed to less than 100% of the economics, the outside stockholders' interests are shown as noncontrolling interests.
	The Company has reclassified certain prior period amounts to conform to the current period's presentation.
	Estimates and Assumptions
	The preparation of unaudited interim consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the unaudited interim consolidated financial statements and the reported amounts of revenues, expenses and allocated charges during the reporting period. Significant estimates pertain to impairments of goodwill, intangible assets and other long-lived assets, purchase price allocations, restructuring costs and other (charges) gains, net, income taxes, pension and other postretirement benefits, asset retirement obligations, environmental liabilities and loss contingencies, among others. Actual results could differ from those estimates.
	Goodwill and Other Intangible Assets
	The Company assesses the recoverability of the carrying amount of its reporting unit goodwill either qualitatively or quantitatively annually during the third quarter of its fiscal year using June 30 balances or whenever events or changes in circumstances indicate that the carrying amount of the asset may not be fully recoverable. In connection with the Company's annual goodwill impairment assessment, the Company did not record an impairment loss to goodwill during the nine months ended September 30, 2014 as the estimated fair value for each of the Company's reporting units exceeded the carrying amount of the underlying assets by a substantial margin.
	The Company assesses the recoverability of the carrying amount of its indefinite-lived intangible assets either qualitatively or by utilizing the relief from royalty method under the income approach annually during the third quarter of its fiscal year using June 30 balances or whenever events or changes in circumstances indicate that the carrying amount of the assets may not be fully recoverable. In connection with the Company's annual indefinite-lived intangible assets impairment assessment, the Company did not record an impairment loss to indefinite-lived intangible assets during the nine months ended September 30, 2014 as the estimated fair value of each of the Company's indefinite-lived intangible assets exceeded the carrying value of the underlying assets by a substantial margin.
	The Company's trademarks and trade names have an indefinite life. For the nine months ended September 30, 2014, the Company did not renew or extend any intangible assets.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In August 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern ("ASU 2014-15"), an amendment to FASB Accounting Standards Codification ("ASC") Topic 205, Presentation of Financial Statements. This update provides guidance on management's responsibility in evaluating whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. This ASU is effective for the annual period ending after December 15, 2016, and for annual and interim periods thereafter. Early adoption is permitted. The Company does not expect the adoption of this ASU to have a material impact on its financial statement disclosures.
	In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). ASU 2014-09 supersedes the revenue recognition requirements of FASB ASC Topic 605, Revenue Recognition and most industry-specific guidance throughout the Accounting Standards Codification, resulting in the creation of FASB ASC Topic 606, Revenue from Contracts with Customers. ASU 2014-09 requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. This ASU provides alternative methods of adoption and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. Early adoption is not permitted. The Company is currently assessing the potential impact of adopting this ASU on its financial statements and related disclosures.
	In April 2014, the FASB issued ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, an amendment to FASB ASC Topic 205, Presentation of Financial Statements and FASB ASC Topic 360, Property, Plant and Equipment. The update revises the definition of discontinued operations by limiting discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have (or will have) a major effect on an entity's operations and financial results, removing the lack of continuing involvement criteria and requiring discontinued operations reporting for the disposal of an equity method investment that meets the definition of discontinued operations. The update also requires expanded disclosures for discontinued operations, including disclosure of pretax profit or loss of an individually significant component of an entity that does not qualify for discontinued operations reporting. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2014. The Company will apply the guidance prospectively to disposal activity occurring after the effective date of this ASU.

Acquisitions_Dispositions_and_

Acquisitions, Dispositions and Plant Closures	9 Months Ended
	Sep. 30, 2014
Acquisitions, Dispositions and Plant Closures [Abstract]	'
Acquisitions, Dispositions and Plant Closures	'
	Acquisitions, Dispositions and Plant Closures
	Plant Closures
	In November 2013, the Company announced its intent to initiate an information and consultation process on the contemplated closure of its acetic anhydride facility in Roussillon, France. In December 2013, the Company announced it had completed the consultation process pursuant to which the Company ceased all manufacturing operations in December 2013. The Roussillon, France acetic anhydride operations are included in the Company's Acetyl Intermediates segment.
	In November 2013, the Company announced its intent to initiate an information and consultation process on the contemplated closure of its vinyl acetate monomer ("VAM") facility in Tarragona, Spain. In December 2013, the Company announced it had completed the consultation process pursuant to which the Company ceased all manufacturing operations in December 2013. The Tarragona, Spain VAM operations are included in the Company's Acetyl Intermediates segment.
	Exit costs related to the closure of the Company's Roussillon acetic anhydride operations and Tarragona VAM operations are included in Other (charges) gains, net in the unaudited interim consolidated statements of operations (Note 13).

Ventures_and_Variable_Interest

Ventures and Variable Interest Entities	9 Months Ended
	Sep. 30, 2014
Ventures and Variable Interest Entities [Abstract]	'
Ventures and Variable Interest Entities	'
	Ventures and Variable Interest Entities
	Ventures
	The Company's equity method investment, InfraServ GmbH & Co. Hoechst KG, is owned primarily by an entity included in Other Activities. The Company's Consumer Specialties and Acetyl Intermediates segments also each hold an ownership percentage. During the three months ended June 30, 2014, InfraServ GmbH & Co. Hoechst KG restructured the debt of a subsidiary resulting in additional equity in net earnings of affiliates of $29 million attributable to Other Activities and $6 million and $13 million attributable to the Company's Consumer Specialties and Acetyl Intermediates segments, respectively (Note 18).
	Consolidated Variable Interest Entities
	On February 4, 2014, the Company and Mitsui & Co., Ltd., of Tokyo, Japan ("Mitsui") formed a 50%-owned joint venture, Fairway Methanol LLC ("Fairway"), for the production of methanol at the Company's integrated chemical plant in Clear Lake, Texas. The planned methanol unit will utilize natural gas in the US Gulf Coast region as a feedstock and will benefit from the existing infrastructure at the Company's Clear Lake facility. Both Mitsui and the Company will supply their own natural gas to Fairway in exchange for methanol tolling under a cost-plus off-take arrangement. The planned methanol facility will have an annual capacity of 1.3 million tons and is expected to be operational in the second half of 2015. In exchange for ownership in the venture, the Company contributed net cash of $6 million and pre-formation costs, including costs for long lead time materials, of $103 million of which $70 million was subject to reimbursement from Mitsui should the venture not form and was included in Non-trade receivables at December 31, 2013. Upon consolidation of the venture, the non-trade receivable was settled. Mitsui contributed cash in exchange for ownership in the venture.
	The Company determined that Fairway is a variable interest entity ("VIE") in which the Company is the primary beneficiary. Under the terms of the joint venture agreements, the Company provides site services and day-to-day operations for the methanol facility. In addition, the joint venture agreements provide that the Company indemnifies Mitsui for environmental obligations that exceed a specified threshold, as well as an equity option between the partners. Accordingly, the Company consolidates the venture and records a noncontrolling interest for the share of the venture owned by Mitsui. Fairway is included in the Company's Acetyl Intermediates segment.
	The carrying amount of the assets and liabilities associated with Fairway included in the unaudited consolidated balance sheet are as follows:
		As of
		September 30,
		2014
		(In $ millions)
	Cash and cash equivalents	6
	Property, plant and equipment	388
	Other assets(1)	24
	Total assets(2)	418
	Current liabilities	37
	Total liabilities(3)	37
	______________________________
	(1)	Includes prepaid intangible assets with a weighted average amortization period of 28 years.
	(2)	Assets can only be used to settle the obligations of Fairway.
	(3)	Represents amounts owed by Fairway for reimbursement of expenditures.
	Nonconsolidated Variable Interest Entities
	The Company holds variable interests in entities that supply certain raw materials and services to the Company. The variable interests primarily relate to cost-plus contractual arrangements with the suppliers and recovery of capital expenditures for certain plant assets plus a rate of return on such assets. Liabilities for such supplier recoveries of capital expenditures have been recorded as capital lease obligations. The entities are not consolidated because the Company is not the primary beneficiary of the entities as it does not have the power to direct the activities of the entities that most significantly impact the entities' economic performance. The Company's maximum exposure to loss as a result of its involvement with these VIEs as of September 30, 2014 relates primarily to the recovery of capital expenditures for certain property, plant and equipment.
	The carrying amount of the assets and liabilities associated with the obligations to nonconsolidated VIEs, as well as the maximum exposure to loss relating to these nonconsolidated VIEs are as follows:
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Property, plant and equipment, net	101	111
	Trade payables	45	56
	Current installments of long-term debt	9	8
	Long-term debt	128	136
	Total liabilities	182	200
	Maximum exposure to loss	300	318
	The difference between the total liabilities associated with obligations to unconsolidated VIEs and the maximum exposure to loss primarily represents take-or-pay obligations for services included in the Company's unconditional purchase obligations (Note 17).

Marketable_Securities_at_Fair_

Marketable Securities, at Fair Value	9 Months Ended
	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Marketable Securities, at Fair Value	'
	Marketable Securities, at Fair Value
	The Company's nonqualified trusts hold available-for-sale securities for funding requirements of the Company's nonqualified pension plans (Note 10).
	The amortized cost, gross unrealized gain, gross unrealized loss and fair values for available-for-sale securities by major security type are as follows:
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Mutual Funds
	Amortized cost	36	41
	Gross unrealized gain	—	—
	Gross unrealized loss	—	—
	Fair value	36	41
	See Note 16 - Fair Value Measurements for additional information regarding the fair value of the Company's marketable securities.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Finished goods	570	571
	Work-in-process	49	59
	Raw materials and supplies	152	174
	Total	771	804

Current_Other_Liabilities

Current Other Liabilities	9 Months Ended
	Sep. 30, 2014
Other Liabilities, Current [Abstract]	'
Current Other Liabilities	'
	Current Other Liabilities
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Asset retirement obligations	8	29
	Current portion of benefit obligations	46	78
	Customer rebates	45	48
	Derivatives (Note 15)	11	12
	Environmental (Note 11)	20	30
	Insurance	12	14
	Interest	31	24
	Restructuring (Note 13)	29	60
	Salaries and benefits	122	96
	Sales and use tax/foreign withholding tax payable	14	12
	Uncertain tax positions	58	64
	Other	87	74
	Total	483	541

Noncurrent_Other_Liabilities

Noncurrent Other Liabilities	9 Months Ended
	Sep. 30, 2014
Other Liabilities, Noncurrent [Abstract]	'
Noncurrent Other Liabilities	'
	Noncurrent Other Liabilities
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Asset retirement obligations	26	18
	Deferred proceeds	48	53
	Deferred revenue	24	28
	Derivatives (Note 15)	13	3
	Environmental (Note 11)	71	67
	Income taxes payable	20	20
	Insurance	50	50
	Restructuring (Note 13)	—	2
	Other	43	46
	Total	295	287

Debt

Debt	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt	'
	Debt
		As of		As of
		September 30,		December 31,
		2014		2013
		(In $ millions)
	Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
	Current installments of long-term debt	625		24
	Short-term borrowings, including amounts due to affiliates(1)	105		103
	Accounts receivable securitization facility(2)	35		50
	Total	765		177
	______________________________
	(1)	The weighted average interest rate was 3.9% and 4.4% as of September 30, 2014 and December 31, 2013, respectively.
	(2)	The weighted average interest rate was 0.7% as of September 30, 2014 and December 31, 2013.
		As of		As of
		September 30,		December 31,
		2014		2013
		(In $ millions)
	Long-Term Debt
	Senior credit facilities - Term C-2 loan due 2016	35		978
	Senior credit facilities - Term C-3 loan due 2018	914		—
	Senior unsecured notes due 2018, interest rate of 6.625%	600		600
	Senior unsecured notes due 2019, interest rate of 3.250%	378		—
	Senior unsecured notes due 2021, interest rate of 5.875%	400		400
	Senior unsecured notes due 2022, interest rate of 4.625%	500		500
	Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 5.7% to 6.7%	169		169
	Obligations under capital leases due at various dates through 2054	268		264
	Subtotal	3,264		2,911
	Current installments of long-term debt	(625	)	(24	)
	Total	2,639		2,887
	Senior Notes
	On September 24, 2014, Celanese US completed an offering of €300 million in principal amount of 3.250% senior unsecured notes due 2019 ("3.250% Notes") in a public offering registered under the Securities Act of 1933, as amended ("Securities Act"). In connection with the 3.250% Notes offering, the Company recorded deferred financing costs of $6 million during the three months ended September 30, 2014, which are being amortized over the term of the 3.250% Notes. Deferred financing costs are included in noncurrent Other assets in the unaudited consolidated balance sheets.
	The 3.250% Notes were issued under a base indenture dated May 6, 2011 and a third supplemental indenture dated September 24, 2014 ("Third Supplemental Indenture") among Celanese US, Celanese, each of the domestic subsidiaries of Celanese US that guarantee its obligations under its senior secured credit facilities ("Subsidiary Guarantors") and Wells Fargo Bank, National Association, as trustee. Celanese US will pay interest on the 3.250% Notes on April 15 and October 15 of each year commencing on April 15, 2015. Prior to October 15, 2019, Celanese US may redeem some or all of the 3.250% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the Third Supplemental Indenture, plus accrued and unpaid interest, if any, to the redemption date.
	On September 15, 2014, Celanese US issued an irrevocable notice of redemption of the $600 million principal amount of 6.625% senior unsecured notes due 2018 registered under the Securities Act ("6.625% Notes") under the terms of the indenture dated September 24, 2010. On October 15, 2014, Celanese US redeemed the 6.625% Notes at a redemption price of 103.313% of the face amount for a total principal and premium payment of $620 million plus accrued interest of $20 million. Proceeds from the issuance of the 3.250% Notes were used to partially fund the redemption of the 6.625% Notes, as well as cash on hand. The Company will accelerate amortization of deferred financing costs of $5 million, which will be included in Refinancing expense in the unaudited interim consolidated statements of operations during the three months ended December 31, 2014. The 6.625% Notes are included in Short-term borrowings and current installments of long-term debt - third party and affiliates in the unaudited consolidated balance sheet as of September 30, 2014.
	In November 2012, Celanese US completed an offering of $500 million in principal amount of 4.625% senior unsecured notes due 2022 ("4.625% Notes") in a public offering registered under the Securities Act.
	In May 2011, Celanese US completed an offering of $400 million in principal amount of 5.875% senior unsecured notes due 2021 ("5.875% Notes" and, together with the 6.625% Notes, the 4.625% Notes and the 3.250% Notes, collectively the "Senior Notes") in a public offering registered under the Securities Act.
	The Senior Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US. The Senior Notes are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors. The indentures under which the Senior Notes were issued contain covenants, including, but not limited to, restrictions on the Company's ability to incur indebtedness; grant liens on assets; merge, consolidate, or sell assets; pay dividends or make other restricted payments; engage in transactions with affiliates; or engage in other businesses.
	Senior Credit Facilities
	On September 24, 2014, Celanese US, Celanese and the Subsidiary Guarantors entered into an amendment agreement with the lenders under Celanese US's existing senior secured credit facilities in order to amend and restate the amended credit agreement dated September 16, 2013 (as amended and restated by the 2014 amendment agreement, the "Amended Credit Agreement"). Under the Amended Credit Agreement, all of the US dollar-denominated Term C-2 term loans and all but €28 million of the Euro-denominated Term C-2 term loans under the 2013 amended credit agreement were converted into, or refinanced by, the Term C-3 loan facility with an extended maturity date of October 2018. The non-extended portions of the Term C-2 loan facility continue to have a maturity date of October 2016. In addition, the maturity date of the Company's revolving credit facility was extended to October 2018 and the facility was increased to $900 million. Accordingly, the Amended Credit Agreement consists of the Term C-2 loan facility, the Term C-3 loan facility and a $900 million revolving credit facility.
	As a result of the Amended Credit Agreement, the Company recorded $4 million of Refinancing expense in the unaudited interim consolidated statements of operations during the three months ended September 30, 2014, which includes accelerated amortization of deferred financing costs and other refinancing expenses. In addition, the Company recorded deferred financing costs of $4 million during the three months ended September 30, 2014, which are being amortized over the term of the Term C-3 loans and revolving credit facility.
	As of September 30, 2014, the margin for borrowings under the Term C-2 loan facility was 2.0% above the Euro Interbank Offered Rate ("EURIBOR") and the margin for borrowings under the Term C-3 loan facility was 2.25% above LIBOR (for US dollars) and 2.25% above EURIBOR (for Euros), as applicable. As of September 30, 2014, the margin for borrowings under the revolving credit facility was 1.5% above LIBOR. The margin for borrowings under the revolving credit facility is subject to increase or decrease in certain circumstances based on changes in the corporate credit ratings of Celanese or Celanese US.
	Term loan borrowings under the Amended Credit Agreement are subject to amortization at 1% of the initial principal amount per annum, payable quarterly. In addition, the Company pays quarterly commitment fees on the unused portions of the revolving credit facility of 0.25% per annum.
	The Amended Credit Agreement is guaranteed by Celanese and certain domestic subsidiaries of Celanese US and is secured by a lien on substantially all assets of Celanese US and such guarantors, subject to certain agreed exceptions (including for certain real property and certain shares of foreign subsidiaries), pursuant to the Guarantee and Collateral Agreement dated April 2, 2007.
	As a condition to borrowing funds or requesting letters of credit be issued under the revolving credit facility, the Company's first lien senior secured leverage ratio (as calculated as of the last day of the most recent fiscal quarter for which financial statements have been delivered under the revolving facility) cannot exceed the threshold as specified below. Further, the Company's first lien senior secured leverage ratio must be maintained at or below that threshold while any amounts are outstanding under the revolving credit facility.
	The Company's amended first lien senior secured leverage ratios under the revolving credit facility are as follows:
	As of September 30, 2014
	Maximum		Estimate	Estimate, If Fully Drawn
	3.9		0.67	1.27
	The Amended Credit Agreement contains covenants including, but not limited to, restrictions on the Company's ability to incur indebtedness; grant liens on assets; merge, consolidate, or sell assets; pay dividends or make other restricted payments; make investments; prepay or modify certain indebtedness; engage in transactions with affiliates; enter into sale-leaseback transactions or hedge transactions; or engage in other businesses.
	The Amended Credit Agreement also maintains a number of events of default, including a cross default to other debt of Celanese, Celanese US, or their subsidiaries, including the Senior Notes, in an aggregate amount equal to more than $50 million and the occurrence of a change of control. Failure to comply with these covenants, or the occurrence of any other event of default, could result in acceleration of the borrowings and other financial obligations under the Amended Credit Agreement.
	The Company is in compliance with all of the covenants related to its debt agreements as of September 30, 2014.
	Accounts Receivable Securitization Facility
	In August 2013, the Company entered into a $135 million US accounts receivable securitization facility pursuant to (i) a Purchase and Sale Agreement ("Sale Agreement") among certain US subsidiaries of the Company (each an "Originator"), Celanese International Corporation ("CIC") and CE Receivables LLC, a wholly-owned, "bankruptcy remote" special purpose subsidiary of an Originator ("Transferor") and (ii) a Receivables Purchase Agreement ("Purchase Agreement"), among CIC, as servicer, the Transferor, various third-party purchasers (collectively, "Purchasers") and The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch, as administrator ("Administrator").
	As of September 30, 2014, the borrowing base was $135 million. The Purchase Agreement expires in 2016, but may be extended for successive one year terms by agreement of the parties. All of the Transferor's assets have been pledged to the Administrator in support of its obligations under the Purchase Agreement. During the nine months ended September 30, 2014, the Company repaid $15 million of borrowings outstanding under the accounts receivable securitization facility using cash on hand. As of September 30, 2014, the outstanding amount of accounts receivable transferred by the Originators to the Transferor was $239 million.
	The Company's balances available for borrowing are as follows:
		As of
		September 30,
		2014
		(In $ millions)
	Revolving Credit Facility
	Borrowings outstanding	—
	Letters of credit issued	—
	Available for borrowing	900
	Accounts Receivable Securitization Facility
Borrowings outstanding	35
Letters of credit issued	79
Available for borrowing	21

Benefit_Obligations

Benefit Obligations	9 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Benefit Obligations	'
	Benefit Obligations
	In November 2013, the Company announced it would amend its US postretirement health care plan to (a) eliminate eligibility for all current and future US non-union employees; (b) terminate its US postretirement health care plan on December 31, 2014 for all US participants; and (c) offer certain eligible US participants a lump-sum buyout payment if they irrevocably waive all future benefits under the US postretirement health care plan and end their participation before December 31, 2014. These actions generated a prior service credit of $92 million, which is included in Pension and postretirement benefits within Accumulated other comprehensive income (loss), net in the unaudited consolidated balance sheets.
	Effective March 27, 2014, the Company eliminated eligibility for all current and future union employees at the Company's Narrows, Virginia facility in its US postretirement health care plan. These actions generated a prior service credit of $5 million, which is included in Pension and postretirement benefits within Accumulated other comprehensive income (loss), net in the unaudited consolidated balance sheets.
	The prior service credits attributable to the Company's US postretirement health care plan are being amortized ratably into the consolidated statements of operations through December 31, 2014. The Company recognized $21 million and $62 million of prior service credit amortization during the three and nine months ended September 30, 2014, respectively, and made $1 million and $32 million in lump-sum buyout payments during the three and nine months ended September 30, 2014, respectively.
	The components of net periodic benefit cost are as follows:
		Three Months Ended September 30,							Nine Months Ended September 30,
		2014				2013			2014				2013
		Pension		Post-retirement		Pension		Post-retirement	Pension		Post-retirement		Pension		Post-retirement
		Benefits		Benefits		Benefits		Benefits	Benefits		Benefits		Benefits		Benefits
		(In $ millions)							(In $ millions)
	Service cost	3		—		9		—	9		1		26		2
	Interest cost	41		1		39		3	126		3		116		8
	Expected return on plan assets	(54	)	—		(57	)	—	(162	)	—		(169	)	—
	Amortization of prior service cost (credit), net	—		(21	)	—		—	—		(62	)	1		—
	Total	(10	)	(20	)	(9	)	3	(27	)	(58	)	(26	)	10
	Benefit obligation funding is as follows:
		As of		Total
		September 30,		Expected
		2014		2014
		(In $ millions)
	Cash contributions to defined benefit pension plans	24		47
	Benefit payments to nonqualified pension plans	17		22
	Benefit payments to other postretirement benefit plans	42		54
	The Company's estimates of its US defined benefit pension plan contributions reflect the provisions of the Pension Protection Act of 2006.
	The Company participates in a multiemployer defined benefit plan in Germany covering certain employees. The Company's contributions to the multiemployer defined benefit plan are based on specified percentages of employee contributions and totaled $5 million for the nine months ended September 30, 2014.

Environmental

Environmental	9 Months Ended
	Sep. 30, 2014
Environmental Remediation Obligations [Abstract]	'
Environmental	'
	Environmental
	General
	The Company is subject to environmental laws and regulations worldwide that impose limitations on the discharge of pollutants into the air and water and establish standards for the treatment, storage and disposal of solid and hazardous wastes. The Company believes that it is in substantial compliance with all applicable environmental laws and regulations. The Company is also subject to retained environmental obligations specified in various contractual agreements arising from the divestiture of certain businesses by the Company or one of its predecessor companies.
	The components of environmental remediation reserves are as follows:
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Demerger obligations (Note 17)	27	27
	Divestiture obligations (Note 17)	22	21
	Active sites	27	32
	US Superfund sites	12	13
	Other environmental remediation reserves	3	4
	Total	91	97
	Remediation
	Due to its industrial history and through retained contractual and legal obligations, the Company has the obligation to remediate specific areas on its own sites as well as on divested, demerger, orphan or US Superfund sites (as defined below). In addition, as part of the demerger agreement between the Company and Hoechst AG ("Hoechst"), a specified portion of the responsibility for environmental liabilities from a number of Hoechst divestitures was transferred to the Company (Note 17). The Company provides for such obligations when the event of loss is probable and reasonably estimable. The Company believes that environmental remediation costs will not have a material adverse effect on the financial position of the Company, but may have a material adverse effect on the results of operations or cash flows in any given period.
	US Superfund Sites
	In the US, the Company may be subject to substantial claims brought by US federal or state regulatory agencies or private individuals pursuant to statutory authority or common law. In particular, the Company has a potential liability under the US Federal Comprehensive Environmental Response, Compensation and Liability Act of 1980, as amended, and related state laws (collectively referred to as "Superfund") for investigation and cleanup costs at certain sites. At most of these sites, numerous companies, including the Company, or one of its predecessor companies, have been notified that the US Environmental Protection Agency ("EPA"), state governing bodies or private individuals consider such companies to be potentially responsible parties ("PRP") under Superfund or related laws. The proceedings relating to these sites are in various stages. The cleanup process has not been completed at most sites, and the status of the insurance coverage for some of these proceedings is uncertain. Consequently, the Company cannot accurately determine its ultimate liability for investigation or cleanup costs at these sites.
	As events progress at each site for which it has been named a PRP, the Company accrues, as appropriate, a liability for site cleanup. Such liabilities include all costs that are probable and can be reasonably estimated. In establishing these liabilities, the Company considers its shipment of waste to a site, its percentage of total waste shipped to the site, the types of wastes involved, the conclusions of any studies, the magnitude of any remedial actions that may be necessary and the number and viability of other PRPs. Often the Company joins with other PRPs to sign joint defense agreements that settle, among PRPs, each party's percentage allocation of costs at the site. Although the ultimate liability may differ from the estimate, the Company routinely reviews the liabilities and revises the estimate, as appropriate, based on the most current information available.
	One such site is the Lower Passaic River Study Area. The Company and 70 other companies are parties to a May 2007 Administrative Order on Consent with the EPA to perform a Remedial Investigation/Feasibility Study ("RI/FS") in the lower 17-mile stretch of the Passaic River in order to identify the levels of contaminants and potential cleanup actions. The parties are still working on the RI/FS with a goal to complete it in 2015. On April 11, 2014, the EPA issued its proposed evaluation of remediation alternatives for the lower 8-mile stretch of the Passaic River. The EPA estimates the cost for the various alternatives will range from $365 million to $3.2 billion. The EPA's preferred plan would involve dredging the Passaic River bank to bank and installing an engineered cap at an estimated cost of $1.7 billion.
	The parties involved have submitted comments to the EPA challenging the science, scope, necessity and viability of the EPA's proposed plan as the EPA's preferred remedy for the lower 8-mile stretch is inconsistent with the remedy being developed in the RI/FS for the full 17-mile stretch of the river. The EPA will evaluate all the input and is expected to issue a final decision concerning the lower 8-mile stretch of the river in 2015. Any subsequent order from the EPA requiring clean-up actions could be judicially challenged.
	As the cost of the final remedy remains uncertain and the Company has found no evidence that it contributed any of the primary contaminants of concern to the Passaic River, the Company cannot reliably estimate its portion of the final costs for this matter at this time. The Company is vigorously defending these and all related matters and believes its ultimate allocable share of the cleanup costs will not be material.
	Environmental Proceedings
	In January 2013, following self-disclosures by the Company, the Company's Meredosia, Illinois site received a Notice of Violation/Finding of Violation from the EPA Region 5 alleging Clean Air Act violations. On September 22, 2014, the Company and the EPA entered into an administrative settlement agreement, which included a penalty payment of $380,000 and funding of $175,000 for a specific supplemental environmental project. The Meredosia, Illinois site is included in the Company's Industrial Specialties segment.

Stockholders_Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity	'
	Stockholders' Equity
	Common Stock
	The Company's Board of Directors follows a policy of declaring, subject to legally available funds, a quarterly cash dividend on each share of the Company's Series A Common Stock, par value $0.0001 per share ("Common Stock"), unless the Company's Board of Directors, in its sole discretion, determines otherwise. The amount available to pay cash dividends is restricted by the Company's Amended Credit Agreement and the Senior Notes.
	The Company's Board of Directors approved increases in the Company's Common Stock cash dividend rates as follows:
		Increase		Quarterly Common		Annual Common		Effective Date
				Stock Cash Dividend		Stock Cash Dividend
		(In percentages)		(In $ per share)
	Apr-13	20		0.09		0.36		May-13
	Jul-13	100		0.18		0.72		Aug-13
	Apr-14	39		0.25		1		May-14
	Treasury Stock
	The Company's Board of Directors authorized the repurchase of Common Stock as follows:
		Authorized Amount
		(In $ millions)
	Feb-08	400
	Oct-08	100
	Apr-11	129
	Oct-12	264
	Feb-14	172
	As of September 30, 2014	1,065
	These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. This repurchase program does not have an expiration date.
	The share repurchase activity pursuant to this authorization is as follows:
		Nine Months Ended								Total From
		September 30,								Feb-08
										Through
		2014				2013				30-Sep-14
	Shares repurchased	3,515,301				2,096,320			(1)	19,844,008			(2)
	Average purchase price per share	$	57.19			$	48.58			$	43.64
	Amount spent on repurchased shares (in millions)	$	201			$	102			$	866
	______________________________
	(1)	Excludes 6,021 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.
	(2)	Excludes 11,844 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.
	The purchase of treasury stock reduces the number of shares outstanding, and the repurchased shares may be used by the Company for compensation programs utilizing the Company's stock and other corporate purposes. The Company accounts for treasury stock using the cost method and includes treasury stock as a component of stockholders' equity.
	Other Comprehensive Income (Loss), Net
		Three Months Ended September 30,
		2014									2013
		Gross			Income			Net			Gross			Income		Net
		Amount			Tax			Amount			Amount			Tax		Amount
					(Provision)									(Provision)
					Benefit									Benefit
		(In $ millions)
	Unrealized gain (loss) on marketable securities	—			—			—			1		(1)	—		1
	Foreign currency translation	(127	)		3			(124	)		44			(2	)	42
	Gain (loss) from cash flow hedges	(8	)		3			(5	)		2		(2)	(1	)	1
	Pension and postretirement benefits	(16	)		8			(8	)		—			—		—
	Total	(151	)		14			(137	)		47			(3	)	44
	______________________________
	(1)	Amount includes $1 million of unrealized gains related to the Company's equity method investments.
	(2)	Amount includes $1 million of gains associated with the Company's equity method investments.
		Nine Months Ended September 30,
		2014									2013
		Gross			Income			Net			Gross			Income		Net
		Amount			Tax			Amount			Amount			Tax		Amount
					(Provision)									(Provision)
					Benefit									Benefit
		(In $ millions)
	Unrealized gain (loss) on marketable securities	—			—			—			1		(1)	—		1
	Foreign currency translation	(142	)		1			(141	)		41			(4	)	37
	Gain (loss) from cash flow hedges	(11	)		—			(11	)		7			(3	)	4
	Pension and postretirement benefits	(57	)		23			(34	)		—		(2)	—		—
	Total	(210	)		24			(186	)		49			(7	)	42
	______________________________
	(1)	Amount includes $1 million of unrealized gains related to the Company's equity method investments.
(2)	Amount includes amortization of actuarial gains of $1 million related to the Company's equity method investments.
Adjustments to Accumulated other comprehensive income (loss), net, are as follows:
	Unrealized			Foreign			Gain (Loss)			Pension			Accumulated
	Gain (Loss)			Currency			from Cash			and			Other
	on			Translation			Flow			Postretire-			Comprehensive
	Marketable						Hedges			ment			Income
	Securities						(Note 15)			Benefits			(Loss), Net
	(Note 5)									(Note 10)
	(In $ millions)
As of December 31, 2013	—			(3	)		(44	)		43			(4	)
Other comprehensive income before reclassifications	—			(142	)		(14	)		—			(156	)
Amounts reclassified from accumulated other comprehensive income (loss)	—			—			3			(57	)		(54	)
Income tax (provision) benefit	—			1			—			23			24
As of September 30, 2014	—			(144	)		(55	)		9			(190	)

Other_Charges_Gains_Net

Other (Charges) Gains, Net	9 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
Other (Charges) Gains, Net	'
	Other (Charges) Gains, Net
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
		(In $ millions)
	Employee termination benefits	(3	)	—		(6	)	(3	)
	Kelsterbach plant relocation	—		(2	)	—		(6	)
	Asset impairments	—		(2	)	—		(2	)
	Plant/office closures	1		—		2		—
	Commercial disputes	21		—		21		—
	Other	1		—		4		—
	Total	20		(4	)	21		(11	)
	2014
	During the three months ended September 30, 2014, the Company received consideration of $6 million in connection with the settlement of a claim against a bankrupt supplier. The resolution of this commercial dispute is included in the Acetyl Intermediates segment. In addition, the Company recovered $15 million from an arbitration award against a former utility operator at its cellulose derivatives manufacturing facility in Narrows, Virginia, which is included in the Consumer Specialties segment.
	During the nine months ended September 30, 2014 the Company recorded a $3 million adjustment to its initial estimate for asset retirement obligations related to the closure of its acetic anhydride facility in Roussillon, France and its VAM facility in Tarragona, Spain (Note 3). Also, during the nine months ended September 30, 2014, the Company recorded $4 million of employee termination benefits related to the closure of its acetic anhydride facility in Roussillon, France and its VAM facility in Tarragona, Spain (Note 3).
	2013
	During the nine months ended September 30, 2013, the Company recorded $3 million of employee termination benefits related to a business optimization project which is included in the Company's Industrial Specialties and Acetyl Intermediates segments. In addition, during the nine months ended September 30, 2013, the Company recorded $6 million of costs related to the relocation of the Company's polyacetal ("POM") operations from Kelsterbach, Germany to Frankfurt Hoechst Industrial Park, Germany, which is included in the Company's Advanced Engineered Materials segment.
	The changes in the restructuring reserves by business segment are as follows:
		Advanced		Consumer		Industrial		Acetyl			Other		Total
		Engineered		Specialties		Specialties		Intermediates
		Materials
		(In $ millions)
	Employee Termination Benefits
	As of December 31, 2013	4		3		2		16			4		29
	Additions	1		—		1		4			—		6
	Cash payments	(1	)	(1	)	(2	)	(13	)		(1	)	(18	)
	Other changes			—		—		—			—		—
	Exchange rate changes	—		—		—		—			—		—
	As of September 30, 2014	4		2		1		7			3		17
	Plant/Office Closures
	As of December 31, 2013	—		—		—		33			—		33
	Additions	—		—		—		—			—		—
	Cash payments	—		—		—		(7	)		—		(7	)
	Other changes	—		—		—		(12	)	(1)	—		(12	)
	Exchange rate changes	—		—		—		(2	)		—		(2	)
	As of September 30, 2014	—		—		—		12			—		12
	Total	4		2		1		19			3		29
	______________________________
	(1)	Includes a $10 million non-cash reduction to take-or-pay contract termination penalties resulting from the closure of the Company's VAM facility in Tarragona, Spain (Note 3).

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
		Three Months Ended September 30,		Nine Months Ended September 30,
		2014	2013	2014	2013
		(In percentages)
	Effective income tax rate	26	25	27	32
	The effective income tax rate for the three months ended September 30, 2014 was comparable to the rate for the three months ended September 30, 2013. The decrease in the effective income tax rate for the nine months ended September 30, 2014 was primarily due to decreased earnings in high income tax jurisdictions combined with decreases in losses in jurisdictions without income tax benefit.
	For the nine months ended September 30, 2014, the Company's uncertain tax positions decreased $55 million primarily as a result of a $42 million decrease for the reclassification of uncertain tax positions for net operating loss carryforwards in certain jurisdictions to deferred income tax assets in accordance with ASU 2013-11, Presentation of Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists, which was effective January 1, 2014, and a decrease of $16 million due to exchange rate changes.
	The Company's US tax returns for the years 2009 through 2012 are currently under audit by the US Internal Revenue Service and certain of the Company's subsidiaries are under audit in jurisdictions outside of the US. In addition, certain statutes of limitations are scheduled to expire in the near future. It is reasonably possible that a further change in the unrecognized tax benefits may occur within the next twelve months related to the settlement of one or more of these audits or the lapse of applicable statutes of limitations. Such amounts have been reflected in the current portion of uncertain tax positions (Note 7).

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments
	Interest Rate Risk Management
	To reduce the interest rate risk inherent in the Company's variable rate debt, the Company utilizes interest rate swap agreements to convert a portion of its variable rate borrowings into a fixed rate obligation. These interest rate swap agreements are designated as cash flow hedges and fix the LIBOR portion of the Company's US-dollar denominated variable rate borrowings (Note 9). Accordingly, to the extent the cash flow hedge is effective, changes in the fair value of interest rate swaps are included in Gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the unaudited consolidated balance sheets. Hedge accounting is discontinued when the interest rate swap is no longer effective in offsetting cash flows attributable to the hedged risk, the interest rate swap expires or the cash flow hedge is dedesignated because it is probable that the forecasted transaction will not occur according to the original strategy. When a cash flow hedge is dedesignated, any related amounts previously included in Accumulated other comprehensive income (loss), net would be reclassified to earnings immediately.
	US-dollar interest rate swap derivative arrangements are as follows:
	As of September 30, 2014
	Notional Value		Effective Date		Expiration Date		Fixed Rate (1)
	(In $ millions)						(In percentages)
	500		January 2, 2014		January 2, 2016		1.02
	______________________________
	(1)	Fixes the LIBOR portion of the Company's US-dollar denominated variable rate borrowings (Note 9).
	As of December 31, 2013
	Notional Value		Effective Date		Expiration Date		Fixed Rate (1)
	(In $ millions)						(In percentages)
	1,100		January 2, 2012		January 2, 2014		1.71
	500		January 2, 2014		January 2, 2016		1.02
	______________________________
	(1)	Fixes the LIBOR portion of the Company's US-dollar denominated variable rate borrowings (Note 9).
	Foreign Exchange Risk Management
	Certain subsidiaries have assets and liabilities denominated in currencies other than their respective functional currencies, which creates foreign exchange risk. The Company also is exposed to foreign currency fluctuations on transactions with third-party entities as well as intercompany transactions. The Company minimizes its exposure to foreign currency fluctuations by entering into foreign currency forwards and swaps. These foreign currency forwards and swaps are not designated as hedges. Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on intercompany balances are included in Other income (expense), net in the unaudited interim consolidated statements of operations. Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on all other assets and liabilities are included in Foreign exchange gain (loss), net in the unaudited interim consolidated statements of operations.
	Gross notional values of the foreign currency forwards and swaps are as follows:
		As of			As of
		September 30,			December 31,
		2014			2013
		(In $ millions)
	Total	608			869
	The Company uses non-derivative financial instruments that may give rise to foreign currency transaction gains or losses to hedge the foreign currency exposure of net investments in foreign operations. During the three months ended September 30, 2014, the Company designated the €300 million of the principal amount of its 3.250% Notes as a net investment hedge of its investment in a wholly-owned international subsidiary whose functional currency is the Euro to mitigate the volatility caused by the changes in foreign currency exchange rates of the Euro with respect to the US dollar. Accordingly, the effective portion of gains and losses from remeasurement of the 3.250% Notes is included in foreign currency translation within Accumulated other comprehensive income (loss), net in the unaudited consolidated balance sheets. Gains and losses are reclassified to earnings in the period the hedged investment is sold or liquidated.
	The Company uses cross-currency swap contracts to hedge its exposure to foreign currency exchange rate risk associated with certain intercompany loans. Under the terms of the contracts, the Company makes interest payments in Euros and receives interest in US dollars based on a notional amount at fixed rates over the life of the contracts. In addition, the Company pays Euros to and receives US dollars from the counterparty on the notional amount at the maturity of the contract. The terms of the contracts correspond to the related hedged intercompany loans. The cross-currency swap contracts have been designated as cash flow hedges. Accordingly, the effective portion of the unrealized gains and losses on the contracts is included in gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the unaudited consolidated balance sheets. Gains and losses are reclassified to earnings over the period that the hedged loans affect earnings. The Euro notional values are marked-to-market based on the current spot rate and gains and losses are included in Other income (expense), net in the unaudited interim consolidated statements of operations.
	The cross-currency swap agreements are as follows:
	As of September 30, 2014
	Notional Value		Effective Date		Expiration Date		Fixed Rate
	(In millions)						(In percentages)
	$250	(1)	September 11, 2014		September 11, 2020		4.27
	€ 193	(2)	September 11, 2014		September 11, 2020		2.63
	$225	(1)	April 17, 2014		April 17, 2019		3.62
	€ 162	(2)	April 17, 2014		April 17, 2019		2.77
	______________________________
	(1)	Represents the notional amount due from the counterparty at the maturity of the contract.
	(2)	Represents the notional amount due to the counterparty at the maturity of the contract.
	Commodity Risk Management
	The Company has exposure to the prices of commodities in its procurement of certain raw materials. The Company manages its exposure to commodity risk primarily through the use of long-term supply agreements, multi-year purchasing and sales agreements and forward purchase contracts. The Company regularly assesses its practice of using forward purchase contracts and other raw material hedging instruments in accordance with changes in economic conditions. Forward purchases and swap contracts for raw materials are principally settled through physical delivery of the commodity. For qualifying contracts, the Company has elected to apply the normal purchases and normal sales exception based on the probability at the inception and throughout the term of the contract that the Company would not net settle and the transaction would result in the physical delivery of the commodity. Accordingly, realized gains and losses on these contracts are included in the cost of the commodity upon the settlement of the contract.
	Information regarding changes in the fair value of the Company's derivative and non-derivative instruments is as follows:
		Three Months Ended September 30,
		2014						2013
		Gain (Loss)			Gain (Loss)			Gain (Loss)			Gain (Loss)
		Recognized in			Recognized in			Recognized in			Recognized in
		Other			Earnings			Other			Earnings
		Comprehensive			(Loss)			Comprehensive			(Loss)
		Income (Loss)						Income (Loss)
		(In $ millions)
	Designated as Cash Flow Hedges
	Interest rate swaps	—			(1	)	(2)	(2	)	(5)	(3	)	(2)
	Cross-currency swaps	(9	)	(1)	25		(3)	—			—
	Total	(9	)		24			(2	)		(3	)
	Designated as a Net Investment Hedge
	3.250% Notes	9			—			—			—
	Not Designated as Hedges
	Foreign currency forwards and swaps	—			(4	)	(4)	—			(10	)	(4)
	______________________________
	(1)	Excludes $3 million of tax benefit recognized in Other comprehensive income (loss).
	(2)	Reclassified from Accumulated other comprehensive income (loss), net to Interest income (expense) in the unaudited interim consolidated statements of operations.
	(3)	Included in Other income (expense), net for non-operating activity or Interest income (expense) for coupon interest in the unaudited interim consolidated statements of operations.
	(4)	Included in Foreign exchange gain (loss), net for operating activity or Other income (expense), net for non-operating activity in the unaudited interim consolidated statements of operations.
	(5)	Excludes $1 million of gains associated with the Company's equity method investments' derivative activity and $1 million of tax expense recognized in Other comprehensive income (loss).
	Nine Months Ended September 30,
	2014						2013
	Gain (Loss)			Gain (Loss)			Gain (Loss)			Gain (Loss)
	Recognized in			Recognized in			Recognized in			Recognized in
	Other			Earnings			Other			Earnings
	Comprehensive			(Loss)			Comprehensive			(Loss)
	Income (Loss)						Income (Loss)
	(In $ millions)
Designated as Cash Flow Hedges
Interest rate swaps	(1	)	(1)	(3	)	(3)	(1	)	(6)	(8	)	(3)
Cross-currency swaps	(13	)	(2)	28		(4)	—			—
Total	(14	)		25			(1	)		(8	)
Designated as a Net Investment Hedge
3.250% Notes	9			—			—			—
Not Designated as Hedges
Foreign currency forwards and swaps	—			(9	)	(5)	—			(14	)	(5)
______________________________
-1	Excludes $4 million of tax expense recognized in Other comprehensive income (loss).
(2)	Excludes $4 million of tax benefit recognized in Other comprehensive income (loss).
(3)	Reclassified from Accumulated other comprehensive income (loss), net to Interest income (expense) in the unaudited interim consolidated statements of operations.
(4)	Included in Other income (expense), net for non-operating activity or Interest income (expense) for coupon interest in the unaudited interim consolidated statements of operations.
(5)	Included in Foreign exchange gain (loss), net for operating activity or Other income (expense), net for non-operating activity in the unaudited interim consolidated statements of operations.
(6)	Excludes $3 million of tax expense recognized in Other comprehensive income (loss).
See Note 16 - Fair Value Measurements for additional information regarding the fair value of the Company's derivative and non-derivative instruments.
Certain of the Company's foreign currency forwards and swaps, interest rate swaps and cross-currency swap arrangements permit the Company to net settle all contracts with the counterparty through a single payment in an agreed upon currency in the event of default or early termination of the contract, similar to a master netting arrangement. The Company's interest rate swap agreements are subject to cross collateralization under the Guarantee and Collateral Agreement entered into in conjunction with the Term loan borrowings (Note 9).
	As of			As of
	September 30,			December 31,
	2014			2013
	(In $ millions)
Derivative Assets
Gross amount recognized	33			1
Gross amount offset in the consolidated balance sheets	—			—
Net amount presented in the consolidated balance sheets	33			1
Gross amount not offset in the consolidated balance sheets	5			1
Net amount	28			—
	As of			As of
	September 30,			December 31,
	2014			2013
	(In $ millions)
Derivative Liabilities
Gross amount recognized	24			16
Gross amount offset in the consolidated balance sheets	—			1
Net amount presented in the consolidated balance sheets	24			15
Gross amount not offset in the consolidated balance sheets	5			1
Net amount	19			14

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	The Company determines fair value based on the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers assumptions that market participants would use when pricing the asset or liability. Market participant assumptions are categorized by a three-tiered fair value hierarchy which prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. If a financial instrument uses inputs that fall in different levels of the hierarchy, the instrument will be categorized based upon the lowest level of input that is significant to the fair value calculation.
	The three levels of inputs are defined as follows:
	Level 1 - unadjusted quoted prices for identical assets or liabilities in active markets accessible by the Company
	Level 2 - inputs that are observable in the marketplace other than those inputs classified as Level 1
	Level 3 - inputs that are unobservable in the marketplace and significant to the valuation
	The Company's financial assets and liabilities are measured at fair value on a recurring basis and include securities available for sale and derivative financial instruments. Securities available for sale include mutual funds. Derivative financial instruments include interest rate swaps, cross-currency swaps and foreign currency forwards and swaps.
	Marketable Securities. Where possible, the Company utilizes quoted prices in active markets to measure debt and equity securities; such items are classified as Level 1 in the hierarchy and include equity securities. When quoted market prices for identical assets are unavailable, varying valuation techniques are used. Common inputs in valuing these assets include, among others, benchmark yields, issuer spreads and recently reported trades. Such assets are classified as Level 2 in the hierarchy and typically include corporate bonds. Mutual funds are valued at the net asset value per share or unit multiplied by the number of shares or units held as of the measurement date. Valuations for fund investments such as common/collective trusts and registered investment companies, which do not have readily determinable fair values, are typically estimated using a net asset value provided by a third party as a practical expedient.
	Derivatives. Derivative financial instruments are valued in the market using discounted cash flow techniques. These techniques incorporate Level 1 and Level 2 inputs such as interest rates and foreign currency exchange rates. These market inputs are utilized in the discounted cash flow calculation considering the instrument's term, notional amount, discount rate and credit risk. Significant inputs to the derivative valuation for interest rate swaps, cross-currency swaps and foreign currency forwards and swaps are observable in the active markets and are classified as Level 2 in the hierarchy.
	Assets and liabilities measured at fair value on a recurring basis are as follows:
			Fair Value Measurement
		Balance Sheet Classification	Quoted Prices		Significant		Total
			in Active		Other
			Markets for		Observable
			Identical		Inputs
			Assets		(Level 2)
			(Level 1)
			(In $ millions)
	As of September 30, 2014
	Mutual funds	Marketable securities, at fair value	36		—		36
	Derivatives Designated as Cash Flow Hedges
	Cross-currency swaps	Current Other assets	—		2		2
	Cross-currency swaps	Noncurrent Other assets	—		27		27
	Derivatives Not Designated as Hedges
	Foreign currency forwards and swaps	Current Other assets	—		4		4
	Total assets		36		33		69
	Derivatives Designated as Cash Flow Hedges
	Interest rate swaps	Current Other liabilities	—		(4	)	(4	)
	Interest rate swaps	Noncurrent Other liabilities	—		(1	)	(1	)
	Cross-currency swaps	Current Other liabilities	—		(2	)	(2	)
	Cross-currency swaps	Noncurrent Other liabilities	—		(12	)	(12	)
	Designated as a Net Investment Hedge
	3.250% Notes(1)	Long-term Debt	—		—		—
	Derivatives Not Designated as Hedges
	Foreign currency forwards and swaps	Current Other liabilities	—		(5	)	(5	)
	Total liabilities		—		(24	)	(24	)
	As of December 31, 2013
	Mutual funds	Marketable securities, at fair value	41		—		41
	Derivatives Not Designated as Hedges
	Foreign currency forwards and swaps	Current Other assets	—		1		1
	Total assets		41		1		42
	Derivatives Designated as Cash Flow Hedges
	Interest rate swaps	Current Other liabilities	—		(5	)	(5	)
	Interest rate swaps	Noncurrent Other liabilities	—		(3	)	(3	)
	Derivatives Not Designated as Hedges
	Interest rate swaps	Current Other liabilities	—		(2	)	(2	)
	Foreign currency forwards and swaps	Current Other liabilities	—		(5	)	(5	)
	Total liabilities		—		(15	)	(15	)
	______________________________
	(1)	Included in the unaudited consolidated balance sheets at carrying amount.
	Carrying values and fair values of financial instruments that are not carried at fair value are as follows:
				Fair Value Measurement
		Carrying		Significant Other		Unobservable		Total
		Amount		Observable		Inputs
				Inputs		(Level 3)
				(Level 2)
				(In $ millions)
	As of September 30, 2014
	Cost investments	145		—		—		—
	Insurance contracts in nonqualified trusts	57		57		—		57
	Long-term debt, including current installments of long-term debt	3,264		3,028		268		3,296
	As of December 31, 2013
	Cost investments	145		—		—		—
Insurance contracts in nonqualified trusts	62		62		—		62
Long-term debt, including current installments of long-term debt	2,911		2,696		264		2,960
In general, the cost investments included in the table above are not publicly traded and their fair values are not readily determinable; however, the Company believes the carrying values approximate or are less than the fair values. Insurance contracts in nonqualified trusts consist of long-term fixed income securities, which are valued using independent vendor pricing models with observable inputs in the active market and therefore represent a Level 2 measurement. The fair value of long-term debt is based on valuations from third-party banks and market quotations and is classified as Level 2 in the hierarchy. The fair value of obligations under capital leases is based on lease payments and discount rates, which are not observable in the market and therefore represents a Level 3 measurement.
As of September 30, 2014 and December 31, 2013, the fair values of cash and cash equivalents, receivables, trade payables, short-term borrowings and the current installments of long-term debt approximate carrying values due to the short-term nature of these instruments. These items have been excluded from the table with the exception of the current installments of long-term debt.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	The Company is involved in legal and regulatory proceedings, lawsuits, claims and investigations incidental to the normal conduct of business, relating to such matters as product liability, land disputes, commercial contracts, employment, antitrust, intellectual property, workers' compensation, chemical exposure, asbestos exposure, trade compliance, prior acquisitions and divestitures, claims of legacy stockholders, past waste disposal practices and release of chemicals into the environment. The Company is actively defending those matters where the Company is named as a defendant. Due to the inherent subjectivity of assessments and unpredictability of outcomes of legal proceedings, the Company's litigation accruals and estimates of possible loss or range of possible loss ("Possible Loss") may not represent the ultimate loss to the Company from legal proceedings. For reasonably possible loss contingencies that may be material, the Company estimates its Possible Loss when determinable, considering that the Company could incur no loss in certain matters. Thus, the Company's exposure and ultimate losses may be higher or lower, and possibly materially so, than the Company's litigation accruals and estimates of Possible Loss. For some matters, the Company is unable, at this time, to estimate its Possible Loss that is reasonably possible of occurring. Generally, the less progress that has been made in the proceedings or the broader the range of potential results, the more difficult for the Company to estimate the Possible Loss that it is reasonably possible the Company could incur. The Company may disclose certain information related to a plaintiff's claim against the Company alleged in the plaintiff's pleadings or otherwise publicly available. While information of this type may provide insight into the potential magnitude of a matter, it does not necessarily represent the Company's estimate of reasonably possible or probable loss. Some of the Company's exposure in legal matters may be offset by applicable insurance coverage. The Company does not consider the possible availability of insurance coverage in determining the amounts of any accruals or any estimates of Possible Loss.
	Commercial Actions
	In June 2012, Linde Gas Singapore Pte. Ltd. ("Linde Gas"), a raw materials supplier based in Singapore, initiated arbitration proceedings in New York against the Company's subsidiary, Celanese Singapore Pte. Ltd. ("Singapore Ltd."), alleging that Singapore Ltd. had breached a certain requirements contract for carbon monoxide by temporarily idling Singapore Ltd.'s acetic acid facility in Jurong Island, Singapore. In December 2013, the arbitral panel ruled that Singapore Ltd. was not required to purchase minimum quantities under the express terms of the contract but, under the circumstances in 2012, had breached its implied duty of good faith. Linde Gas was initially seeking $38 million in damages. It is now seeking damages of $68 million plus legal fees, of which the incremental amount relates to operations in 2012 and 2013 that the Company contends were not part of the liability phase of the arbitration, together with injunctive relief. A hearing on damages was held in May 2014 and a decision is expected in 2014. Based on the Company's evaluation of currently available information, the Company does not believe any Possible Loss, including any Possible Loss in excess of reserves, would have a significant adverse effect on the financial position of the Company, but could have a significant adverse effect on the results of operations or cash flows in any given period.
	Guarantees
	The Company has agreed to guarantee or indemnify third parties for environmental and other liabilities pursuant to a variety of agreements, including asset and business divestiture agreements, leases, settlement agreements and various agreements with affiliated companies. Although many of these obligations contain monetary and/or time limitations, others do not provide such limitations.
	As indemnification obligations often depend on the occurrence of unpredictable future events, the future costs associated with them cannot be determined at this time.
	The Company has accrued for all probable and reasonably estimable losses associated with all known matters or claims that have been brought to its attention. These known obligations include the following:
	•	Demerger Obligations
	In connection with the Hoechst demerger, the Company agreed to indemnify Hoechst, and its legal successors, for various liabilities under the demerger agreement, including for environmental liabilities associated with contamination arising either from environmental damage in general ("Category A") or under 19 divestiture agreements entered into by Hoechst prior to the demerger ("Category B") (Note 11).
	The Company's obligation to indemnify Hoechst, and its legal successors, is capped under Category B at €250 million. If and to the extent the environmental damage should exceed €750 million in aggregate, the Company's obligation to indemnify Hoechst and its legal successors applies, but is then limited to 33.33% of the remediation cost without further limitations. Cumulative payments under the divestiture agreements as of September 30, 2014 are $67 million. Most of the divestiture agreements have become time barred and/or any notified environmental damage claims have been partially settled.
	The Company has also undertaken in the demerger agreement to indemnify Hoechst and its legal successors for (i) 33.33% of any and all Category A liabilities that result from Hoechst being held as the responsible party pursuant to public law or current or future environmental law or by third parties pursuant to private or public law related to contamination and (ii) liabilities that Hoechst is required to discharge, including tax liabilities, which are associated with businesses that were included in the demerger but were not demerged due to legal restrictions on the transfers of such items. These indemnities do not provide for any monetary or time limitations. The Company has not been requested by Hoechst to make any payments in connection with this indemnification. Accordingly, the Company has not made any payments to Hoechst and its legal successors.
	Based on the Company's evaluation of currently available information, including the lack of requests for indemnification, the Company cannot estimate the Possible Loss for the remaining demerger obligations, if any, in excess of amounts accrued.
	•	Divestiture Obligations
	The Company and its predecessor companies agreed to indemnify third-party purchasers of former businesses and assets for various pre-closing conditions, as well as for breaches of representations, warranties and covenants. Such liabilities also include environmental liability, product liability, antitrust and other liabilities. These indemnifications and guarantees represent standard contractual terms associated with typical divestiture agreements and, other than environmental liabilities, the Company does not believe that they expose the Company to any significant risk (Note 11).
	The Company has divested numerous businesses, investments and facilities through agreements containing indemnifications or guarantees to the purchasers. Many of the obligations contain monetary and/or time limitations, which extend through 2037. The aggregate amount of outstanding indemnifications and guarantees provided for under these agreements is $132 million as of September 30, 2014. Other agreements do not provide for any monetary or time limitations.
	Based on the Company's evaluation of currently available information, including the number of requests for indemnification or other payment received by the Company, the Company cannot estimate the Possible Loss for the remaining divestiture obligations, if any, in excess of amounts accrued.
	Purchase Obligations
	In the normal course of business, the Company enters into various purchase commitments for goods and services. The Company maintains a number of "take-or-pay" contracts for purchases of raw materials, utilities and other services. Certain of the contracts contain a contract termination buy-out provision that allows for the Company to exit the contracts for amounts less than the remaining take-or-pay obligations. The Company does not expect to incur any material losses under take-or-pay contractual arrangements. Additionally, the Company has other outstanding commitments representing maintenance and service agreements, energy and utility agreements, consulting contracts and software agreements. As of September 30, 2014, the Company had unconditional purchase obligations of $3.4 billion, which extend through 2036.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
		Advanced		Consumer		Industrial		Acetyl			Other		Eliminations		Consolidated
		Engineered		Specialties		Specialties		Intermediates			Activities
		Materials
		(In $ millions)
		Three Months Ended September 30, 2014
	Net sales	366		291	(1)	314		937		(1)	—		(139	)	1,769
	Other (charges) gains, net	—		16		(1	)	5			—		—		20
	Operating profit (loss)	51		105		16		174			(36	)	—		310
	Equity in net earnings (loss) of affiliates	43		—		—		2			7		—		52
	Depreciation and amortization	27		11		12		21			2		—		73
	Capital expenditures	23		22		7		150			1		—		203		(2)
		Three Months Ended September 30, 2013
	Net sales	346		310	(1)	299		795		(1)	—		(114	)	1,636
	Other (charges) gains, net	(2	)	—		(1	)	(1	)		—		—		(4	)
	Operating profit (loss)	48		85		24		67			(13	)	—		211
	Equity in net earnings (loss) of affiliates	30		—		—		3			8		—		41
	Depreciation and amortization	27		10		13		22			4		—		76
	Capital expenditures	14		33		8		45			2		—		102		(3)
	______________________________
	(1)	Net sales for Acetyl Intermediates and Consumer Specialties include intersegment sales of $137 million and $2 million, respectively, for the three months ended September 30, 2014 and $114 million and $0 million, respectively, for the three months ended September 30, 2013.
	(2)	Includes an increase in accrued capital expenditures of $12 million for the three months ended September 30, 2014.
	(3)	Excludes expenditures related to the relocation of the Company's POM operations in Germany and includes a decrease in accrued capital expenditures of $8 million for the three months ended September 30, 2013.
		Advanced		Consumer		Industrial		Acetyl			Other		Eliminations		Consolidated
		Engineered		Specialties		Specialties		Intermediates			Activities
		Materials
		(In $ millions)
		Nine Months Ended September 30, 2014
	Net sales	1,128		882	(1)	959		2,679		(1)	—		(405	)	5,243
	Other (charges) gains, net	(1	)	16		(1	)	7			—		—		21
	Operating profit (loss)	164		284		60		413			(109	)	—		812
	Equity in net earnings (loss) of affiliates	121		8		—		17			47		—		193
	Depreciation and amortization	80		32		38		61			9		—		220
	Capital expenditures	43		72		17		316			4		—		452		(2)
		As of September 30, 2014
	Goodwill and intangibles, net	350		266		54		217			—		—		887
	Total assets	2,544		1,498		951		2,488			2,229		—		9,710
		Nine Months Ended September 30, 2013
	Net sales	1,027		919	(1)	882		2,412		(1)	—		(346	)	4,894
	Other (charges) gains, net	(6	)	—		(3	)	(2	)		—		—		(11	)
	Operating profit (loss)	123		246		57		197			(59	)	—		564
	Equity in net earnings (loss) of affiliates	115		3		—		7			25		—		150
	Depreciation and amortization	83		30		37		65			12		—		227
	Capital expenditures	35		76		19		116			6		—		252		(3)
		As of December 31, 2013
	Goodwill and intangibles, net	368		278		60		234			—		—		940
	Total assets	2,643		1,478		1,002		2,333			1,562		—		9,018
	______________________________
	(1)	Net sales for Acetyl Intermediates and Consumer Specialties include intersegment sales of $403 million and $2 million, respectively, for the nine months ended September 30, 2014 and $342 million and $4 million, respectively, for the nine months ended September 30, 2013.
	(2)	Includes a decrease in accrued capital expenditures of $12 million for the nine months ended September 30, 2014.
	(3)	Excludes expenditures related to the relocation of the Company's POM operations in Germany and includes a decrease in accrued capital expenditures of $7 million for the nine months ended September 30, 2013.

Earnings_Loss_Per_Share

Earnings (Loss) Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings (Loss) Per Share	'
	Earnings (Loss) Per Share
		Three Months Ended September 30,			Nine Months Ended September 30,
		2014		2013	2014		2013
		(In $ millions, except share data)
	Amounts Attributable to Celanese Corporation
	Earnings (loss) from continuing operations	258		171	713		445
	Earnings (loss) from discontinued operations	(5	)	1	(5	)	2
	Net earnings (loss)	253		172	708		447
	Weighted average shares - basic	154,427,554		158,501,075	155,552,777		159,282,314
	Dilutive stock options	125,259		230,110	150,099		229,920
	Dilutive restricted stock units	621,715		364,346	622,635		334,359
	Weighted average shares - diluted	155,174,528		159,095,531	156,325,511		159,846,593
	Securities not included in the computation of diluted net earnings per share as their effect would have been antidilutive are as follows:
		Three Months Ended September 30,			Nine Months Ended September 30,
		2014		2013	2014		2013
	Stock options	—		38,140	—		94,631
	Restricted stock units	—		—	—		—
	Total	—		38,140	—		94,631

Consolidating_Guarantor_Financ

Consolidating Guarantor Financial Information	9 Months Ended
	Sep. 30, 2014
Consolidating Guarantor Financial Information [Abstract]	'
Consolidating Guarantor Financial Information	'
	Consolidating Guarantor Financial Information
	The Senior Notes were issued by Celanese US ("Issuer") and are guaranteed by Celanese Corporation ("Parent Guarantor") and the Subsidiary Guarantors (Note 9). The Issuer and Subsidiary Guarantors are 100% owned subsidiaries of the Parent Guarantor. The Parent Guarantor and Subsidiary Guarantors have guaranteed the Notes fully and unconditionally and jointly and severally.
	For cash management purposes, the Company transfers cash between the Parent Guarantor, Issuer, Subsidiary Guarantors and non-guarantors through intercompany financing arrangements, contributions or declaration of dividends between the respective parent and its subsidiaries. The transfer of cash under these activities facilitates the ability of the recipient to make specified third-party payments for principal and interest on the Company's outstanding debt, Common Stock dividends and Common Stock repurchases. The consolidating statements of cash flow for the nine months ended September 30, 2014 and 2013 present such intercompany financing activities, contributions and dividends consistent with how such activity would be presented in a stand-alone statement of cash flows.
	The Company has not presented separate financial information and other disclosures for each of its Subsidiary Guarantors because it believes such financial information and other disclosures would not provide investors with any additional information that would be material in evaluating the sufficiency of the guarantees.
	The unaudited interim consolidating financial statements for the Parent Guarantor, the Issuer, the Subsidiary Guarantors and the non-guarantors are as follows:
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
		Three Months Ended September 30, 2014
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net sales	—		—		749		1,340		(320	)	1,769
	Cost of sales	—		—		(492	)	(1,133	)	292		(1,333	)
	Gross profit	—		—		257		207		(28	)	436
	Selling, general and administrative expenses	—		—		(18	)	(100	)	—		(118	)
	Amortization of intangible assets	—		—		(1	)	(4	)	—		(5	)
	Research and development expenses	—		—		(12	)	(10	)	—		(22	)
	Other (charges) gains, net	—		—		21		(1	)	—		20
	Foreign exchange gain (loss), net	—		—		—		1		—		1
	Gain (loss) on disposition of businesses and assets, net	—		—		(3	)	1		—		(2	)
	Operating profit (loss)	—		—		244		94		(28	)	310
	Equity in net earnings (loss) of affiliates	252		291		49		40		(580	)	52
	Interest expense	—		(52	)	(6	)	(20	)	37		(41	)
	Refinancing expense	—		(4	)	—		—		—		(4	)
	Interest income	—		18		18		4		(37	)	3
	Dividend income - cost investments	—		—		—		29		—		29
	Other income (expense), net	—		—		—		(2	)	—		(2	)
	Earnings (loss) from continuing operations before tax	252		253		305		145		(608	)	347
	Income tax (provision) benefit	1		(1	)	(82	)	(16	)	8		(90	)
	Earnings (loss) from continuing operations	253		252		223		129		(600	)	257
	Earnings (loss) from operation of discontinued operations	—		—		(7	)	—		—		(7	)
	Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
	Income tax (provision) benefit from discontinued operations	—		—		2		—		—		2
	Earnings (loss) from discontinued operations	—		—		(5	)	—		—		(5	)
	Net earnings (loss)	253		252		218		129		(600	)	252
	Net (earnings) loss attributable to noncontrolling interests	—		—		—		1		—		1
	Net earnings (loss) attributable to Celanese Corporation	253		252		218		130		(600	)	253
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
		Three Months Ended September 30, 2013
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net sales	—		—		709		1,250		(323	)	1,636
	Cost of sales	—		—		(477	)	(1,136	)	323		(1,290	)
	Gross profit	—		—		232		114		—		346
	Selling, general and administrative expenses	—		—		(18	)	(79	)	—		(97	)
	Amortization of intangible assets	—		—		(2	)	(4	)	—		(6	)
	Research and development expenses	—		—		(17	)	(7	)	—		(24	)
	Other (charges) gains, net	—		—		(1	)	(3	)	—		(4	)
	Foreign exchange gain (loss), net	—		—		—		(2	)	—		(2	)
	Gain (loss) on disposition of businesses and assets, net	—		—		—		(2	)	—		(2	)
	Operating profit (loss)	—		—		194		17		—		211
	Equity in net earnings (loss) of affiliates	172		200		35		30		(396	)	41
	Interest expense	—		(48	)	(8	)	(19	)	32		(43	)
	Refinancing expense	—		(1	)	—		—		—		(1	)
	Interest income	—		14		17		1		(32	)	—
	Dividend income - cost investments	—		—		—		22		—		22
	Other income (expense), net	—		—		—		(2	)	—		(2	)
	Earnings (loss) from continuing operations before tax	172		165		238		49		(396	)	228
	Income tax (provision) benefit	—		7		(63	)	(1	)	—		(57	)
	Earnings (loss) from continuing operations	172		172		175		48		(396	)	171
	Earnings (loss) from operation of discontinued operations	—		—		1		—		—		1
Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—		—		—		—		—		—
Earnings (loss) from discontinued operations	—		—		1		—		—		1
Net earnings (loss)	172		172		176		48		(396	)	172
Net (earnings) loss attributable to noncontrolling interests	—		—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	172		172		176		48		(396	)	172
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
	Nine Months Ended September 30, 2014
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net sales	—		—		2,135		3,997		(889	)	5,243
Cost of sales	—		—		(1,454	)	(3,433	)	866		(4,021	)
Gross profit	—		—		681		564		(23	)	1,222
Selling, general and administrative expenses	—		—		(45	)	(296	)	—		(341	)
Amortization of intangible assets	—		—		(5	)	(11	)	—		(16	)
Research and development expenses	—		—		(38	)	(30	)	—		(68	)
Other (charges) gains, net	—		—		21		—		—		21
Foreign exchange gain (loss), net	—		—		—		(1	)	—		(1	)
Gain (loss) on disposition of businesses and assets, net	—		—		(8	)	3		—		(5	)
Operating profit (loss)	—		—		606		229		(23	)	812
Equity in net earnings (loss) of affiliates	706		801		127		165		(1,606	)	193
Interest expense	—		(147	)	(18	)	(60	)	105		(120	)
Refinancing expense	—		(4	)	—		—		—		(4	)
Interest income	—		49		53		8		(105	)	5
Dividend income - cost investments	—		—		—		87		—		87
Other income (expense), net	—		—		4		(5	)	—		(1	)
Earnings (loss) from continuing operations before tax	706		699		772		424		(1,629	)	972
Income tax (provision) benefit	2		7		(204	)	(73	)	6		(262	)
Earnings (loss) from continuing operations	708		706		568		351		(1,623	)	710
Earnings (loss) from operation of discontinued operations	—		—		(8	)	—		—		(8	)
Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—		—		3		—		—		3
Earnings (loss) from discontinued operations	—		—		(5	)	—		—		(5	)
Net earnings (loss)	708		706		563		351		(1,623	)	705
Net (earnings) loss attributable to noncontrolling interests	—		—		—		3		—		3
Net earnings (loss) attributable to Celanese Corporation	708		706		563		354		(1,623	)	708
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
	Nine Months Ended September 30, 2013
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net sales	—		—		2,121		3,699		(926	)	4,894
Cost of sales	—		—		(1,455	)	(3,369	)	928		(3,896	)
Gross profit	—		—		666		330		2		998
Selling, general and administrative expenses	—		—		(65	)	(251	)	—		(316	)
Amortization of intangible assets	—		—		(9	)	(17	)	—		(26	)
Research and development expenses	—		—		(48	)	(25	)	—		(73	)
Other (charges) gains, net	—		—		3		(10	)	(4	)	(11	)
Foreign exchange gain (loss), net	—		—		—		(5	)	—		(5	)
Gain (loss) on disposition of businesses and assets, net	—		—		—		(3	)	—		(3	)
Operating profit (loss)	—		—		547		19		(2	)	564
Equity in net earnings (loss) of affiliates	443		528		117		124		(1,062	)	150
Interest expense	—		(144	)	(27	)	(51	)	92		(130	)
Refinancing expense	—		(1	)	—		—		—		(1	)
Interest income	—		41		48		4		(92	)	1
Dividend income - cost investments	—		—		—		69		—		69
Other income (expense), net	—		—		—		1		—		1
Earnings (loss) from continuing operations before tax	443		424		685		166		(1,064	)	654
Income tax (provision) benefit	4		19		(176	)	(56	)	—		(209	)
Earnings (loss) from continuing operations	447		443		509		110		(1,064	)	445
Earnings (loss) from operation of discontinued operations	—		—		3		—		—		3
Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—		—		(1	)	—		—		(1	)
Earnings (loss) from discontinued operations	—		—		2		—		—		2
Net earnings (loss)	447		443		511		110		(1,064	)	447
Net (earnings) loss attributable to noncontrolling interests	—		—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	447		443		511		110		(1,064	)	447
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
	Three Months Ended September 30, 2014
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net earnings (loss)	253		252		218		129		(600	)	252
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—		—		—		—
Foreign currency translation	(124	)	(124	)	(4	)	(16	)	144		(124	)
Gain (loss) from cash flow hedges	(5	)	(5	)	—		(6	)	11		(5	)
Pension and postretirement benefits	(8	)	(8	)	(8	)	—		16		(8	)
Total other comprehensive income (loss), net of tax	(137	)	(137	)	(12	)	(22	)	171		(137	)
Total comprehensive income (loss), net of tax	116		115		206		107		(429	)	115
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		1		—		1
Comprehensive income (loss) attributable to Celanese Corporation	116		115		206		108		(429	)	116
	Three Months Ended September 30, 2013
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net earnings (loss)	172		172		176		48		(396	)	172
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	1		1		1		—		(2	)	1
Foreign currency translation	42		42		1		(4	)	(39	)	42
Gain (loss) from cash flow hedges	1		1		1		—		(2	)	1
Pension and postretirement benefits	—		—		—		—		—		—
Total other comprehensive income (loss), net of tax	44		44		3		(4	)	(43	)	44
Total comprehensive income (loss), net of tax	216		216		179		44		(439	)	216
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		—		—		—
Comprehensive income (loss) attributable to Celanese Corporation	216		216		179		44		(439	)	216
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
	Nine Months Ended September 30, 2014
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net earnings (loss)	708		706		563		351		(1,623	)	705
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—		—		—		—
Foreign currency translation	(141	)	(141	)	3		(30	)	168		(141	)
Gain (loss) from cash flow hedges	(11	)	(11	)	—		(9	)	20		(11	)
Pension and postretirement benefits	(34	)	(34	)	(34	)	—		68		(34	)
Total other comprehensive income (loss), net of tax	(186	)	(186	)	(31	)	(39	)	256		(186	)
Total comprehensive income (loss), net of tax	522		520		532		312		(1,367	)	519
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		3		—		3
Comprehensive income (loss) attributable to Celanese Corporation	522		520		532		315		(1,367	)	522
	Nine Months Ended September 30, 2013
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net earnings (loss)	447		443		511		110		(1,064	)	447
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	1		1		1		—		(2	)	1
Foreign currency translation	37		37		4		(2	)	(39	)	37
Gain (loss) from cash flow hedges	4		4		—		—		(4	)	4
Pension and postretirement benefits	—		—		—		—		—		—
Total other comprehensive income (loss), net of tax	42		42		5		(2	)	(45	)	42
Total comprehensive income (loss), net of tax	489		485		516		108		(1,109	)	489
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		—		—		—
Comprehensive income (loss) attributable to Celanese Corporation	489		485		516		108		(1,109	)	489
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED CONSOLIDATING BALANCE SHEET
	As of September 30, 2014
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	—		—		824		686		—		1,510
Trade receivables - third party and affiliates	—		—		147		1,043		(174	)	1,016
Non-trade receivables, net	35		1,113		2,215		490		(3,653	)	200
Inventories, net	—		—		251		604		(84	)	771
Deferred income taxes	—		—		75		53		(17	)	111
Marketable securities, at fair value	—		—		36		—		—		36
Other assets	—		—		19		43		(19	)	43
Total current assets	35		1,113		3,567		2,919		(3,947	)	3,687
Investments in affiliates	2,910		4,664		1,987		592		(9,296	)	857
Property, plant and equipment, net	—		—		998		2,620		—		3,618
Deferred income taxes	—		—		270		27		(1	)	296
Other assets	—		1,915		145		314		(2,009	)	365
Goodwill	—		—		305		451		—		756
Intangible assets, net	—		—		68		63		—		131
Total assets	2,945		7,692		7,340		6,986		(15,253	)	9,710
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—		2,429		827		356		(2,847	)	765
Trade payables - third party and affiliates	—		2		399		589		(174	)	816
Other liabilities	1		62		324		445		(349	)	483
Deferred income taxes	—		17		—		10		(17	)	10
Income taxes payable	—		—		552		52		(489	)	115
Total current liabilities	1		2,510		2,102		1,452		(3,876	)	2,189
Noncurrent Liabilities
Long-term debt	—		2,217		830		1,539		(1,947	)	2,639
Deferred income taxes	—		9		11		206		(1	)	225
Uncertain tax positions	—		6		8		136		—		150
Benefit obligations	—		—		870		207		—		1,077
Other liabilities	—		40		115		209		(69	)	295
Total noncurrent liabilities	—		2,272		1,834		2,297		(2,017	)	4,386
Total Celanese Corporation stockholders' equity	2,944		2,910		3,404		3,046		(9,360	)	2,944
Noncontrolling interests	—		—		—		191		—		191
Total equity	2,944		2,910		3,404		3,237		(9,360	)	3,135
Total liabilities and equity	2,945		7,692		7,340		6,986		(15,253	)	9,710
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED CONSOLIDATING BALANCE SHEET
	As of December 31, 2013
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	—		—		284		700		—		984
Trade receivables - third party and affiliates	—		—		131		877		(141	)	867
Non-trade receivables, net	33		482		2,166		586		(2,924	)	343
Inventories, net	—		—		243		622		(61	)	804
Deferred income taxes	—		—		74		58		(17	)	115
Marketable securities, at fair value	—		—		41		—		—		41
Other assets	—		5		15		24		(16	)	28
Total current assets	33		487		2,954		2,867		(3,159	)	3,182
Investments in affiliates	2,667		4,458		1,677		594		(8,555	)	841
Property, plant and equipment, net	—		—		969		2,456		—		3,425
Deferred income taxes	—		—		248		49		(8	)	289
Other assets	—		1,965		144		285		(2,053	)	341
Goodwill	—		—		305		493		—		798
Intangible assets, net	—		—		64		78		—		142
Total assets	2,700		6,910		6,361		6,822		(13,775	)	9,018
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—		1,713		122		373		(2,031	)	177
Trade payables - third party and affiliates	—		—		312		628		(141	)	799
Other liabilities	1		28		441		513		(442	)	541
Deferred income taxes	—		17		—		10		(17	)	10
Income taxes payable	—		—		460		32		(474	)	18
Total current liabilities	1		1,758		1,335		1,556		(3,105	)	1,545
Noncurrent Liabilities
Long-term debt	—		2,468		825		1,646		(2,052	)	2,887
Deferred income taxes	—		8		—		225		(8	)	225
Uncertain tax positions	—		6		16		178		—		200
Benefit obligations	—		—		943		232		—		1,175
Other liabilities	—		3		91		202		(9	)	287
Total noncurrent liabilities	—		2,485		1,875		2,483		(2,069	)	4,774
Total Celanese Corporation stockholders' equity	2,699		2,667		3,151		2,783		(8,601	)	2,699
Noncontrolling interests	—		—		—		—		—		—
Total equity	2,699		2,667		3,151		2,783		(8,601	)	2,699
Total liabilities and equity	2,700		6,910		6,361		6,822		(13,775	)	9,018
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS
	Nine Months Ended September 30, 2014
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net cash provided by (used in) operating activities	303		444		573		304		(828	)	796
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(142	)	(47	)	—		(189	)
Acquisitions, net of cash acquired	—		—		—		—		—		—
Proceeds from sale of businesses and assets, net	—		—		—		—		—		—
Deferred proceeds from Kelsterbach plant relocation	—		—		—		—		—		—
Capital expenditures related to Kelsterbach plant relocation	—		—		—		—		—		—
Capital expenditures related to Fairway Methanol LLC	—		—		(39	)	(236	)	—		(275	)
Return of capital from subsidiary	—		28		51		—		(79	)	—
Contributions to subsidiary	—		—		(143	)	—		143		—
Intercompany loan receipts (disbursements)	—		4		543		—		(547	)	—
Other, net	—		—		(8	)	(5	)	—		(13	)
Net cash provided by (used in) investing activities	—		32		262		(288	)	(483	)	(477	)
Financing Activities
Short-term borrowings (repayments), net	—		(543	)	13		(1	)	543		12
Proceeds from short-term borrowings	—		—		—		47		—		47
Repayments of short-term borrowings	—		—		—		(70	)	—		(70	)
Proceeds from long-term debt	—		387		—		—		—		387
Repayments of long-term debt	—		(7	)	(4	)	(12	)	4		(19	)
Purchases of treasury stock, including related fees	(201	)	—		—		—		—		(201	)
Dividends to parent	—		(303	)	(303	)	(222	)	828		—
Contributions from parent	—		—		—		143		(143	)	—
Stock option exercises	4		—		—		—		—		4
Series A common stock dividends	(106	)	—		—		—		—		(106	)
Return of capital to parent	—		—		—		(79	)	79		—
Contribution from noncontrolling interest	—		—		—		194		—		194
Other, net	—		(10	)	(1	)	—		—		(11	)
Net cash provided by (used in) financing activities	(303	)	(476	)	(295	)	—		1,311		237
Exchange rate effects on cash and cash equivalents	—		—		—		(30	)	—		(30	)
Net increase (decrease) in cash and cash equivalents	—		—		540		(14	)	—		526
Cash and cash equivalents as of beginning of period	—		—		284		700		—		984
Cash and cash equivalents as of end of period	—		—		824		686		—		1,510
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS
	Nine Months Ended September 30, 2013
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net cash provided by (used in) operating activities	144		58		650		44		(288	)	608
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(112	)	(87	)	—		(199	)
Acquisitions, net of cash acquired	—		—		—		—		—		—
Proceeds from sale of businesses and assets, net	—		—		—		13		—		13
Deferred proceeds from Kelsterbach plant relocation	—		—		—		—		—		—
Capital expenditures related to Kelsterbach plant relocation	—		—		—		(6	)	—		(6	)
Capital expenditures related to Fairway Methanol LLC	—		—		(60	)	—		—		(60	)
Return of capital from subsidiary	—		—		—		—		—		—
Contributions to subsidiary	—		—		(20	)	—		20		—
Intercompany loan receipts (disbursements)	—		4		(92	)	—		88		—
Other, net	—		—		(26	)	(12	)	—		(38	)
Net cash provided by (used in) investing activities	—		4		(310	)	(92	)	108		(290	)
Financing Activities
Short-term borrowings (repayments), net	—		92		(4	)	(8	)	(92	)	(12	)
Proceeds from short-term borrowings	—		—		—		154		—		154
Repayments of short-term borrowings	—		—		—		(51	)	—		(51	)
Proceeds from long-term debt	—		24		50		—		—		74
Repayments of long-term debt	—		(32	)	(119	)	(45	)	4		(192	)
Purchases of treasury stock, including related fees	(102	)	—		—		—		—		(102	)
Dividends to parent	—		(144	)	(144	)	—		288		—
Contributions from parent	—		—		—		20		(20	)	—
Stock option exercises	3		—		—		—		—		3
Series A common stock dividends	(55	)	—		—		—		—		(55	)
Return of capital to parent	—		—		—		—		—		—
Contribution from noncontrolling interest	—		—		—		—		—		—
Other, net	—		(2	)	—		—		—		(2	)
Net cash provided by (used in) financing activities	(154	)	(62	)	(217	)	70		180		(183	)
Exchange rate effects on cash and cash equivalents	—		—		—		6		—		6
Net increase (decrease) in cash and cash equivalents	(10	)	—		123		28		—		141
Cash and cash equivalents as of beginning of period	10		—		275		674		—		959
Cash and cash equivalents as of end of period	—		—		398		702		—		1,100

Description_of_the_Company_and1

Description of the Company and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Estimates and Assumptions	'
	Estimates and Assumptions
	The preparation of unaudited interim consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the unaudited interim consolidated financial statements and the reported amounts of revenues, expenses and allocated charges during the reporting period. Significant estimates pertain to impairments of goodwill, intangible assets and other long-lived assets, purchase price allocations, restructuring costs and other (charges) gains, net, income taxes, pension and other postretirement benefits, asset retirement obligations, environmental liabilities and loss contingencies, among others. Actual results could differ from those estimates.
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets
	The Company assesses the recoverability of the carrying amount of its reporting unit goodwill either qualitatively or quantitatively annually during the third quarter of its fiscal year using June 30 balances or whenever events or changes in circumstances indicate that the carrying amount of the asset may not be fully recoverable. In connection with the Company's annual goodwill impairment assessment, the Company did not record an impairment loss to goodwill during the nine months ended September 30, 2014 as the estimated fair value for each of the Company's reporting units exceeded the carrying amount of the underlying assets by a substantial margin.
	The Company assesses the recoverability of the carrying amount of its indefinite-lived intangible assets either qualitatively or by utilizing the relief from royalty method under the income approach annually during the third quarter of its fiscal year using June 30 balances or whenever events or changes in circumstances indicate that the carrying amount of the assets may not be fully recoverable. In connection with the Company's annual indefinite-lived intangible assets impairment assessment, the Company did not record an impairment loss to indefinite-lived intangible assets during the nine months ended September 30, 2014 as the estimated fair value of each of the Company's indefinite-lived intangible assets exceeded the carrying value of the underlying assets by a substantial margin.
	The Company's trademarks and trade names have an indefinite life. For the nine months ended September 30, 2014, the Company did not renew or extend any intangible assets.

Ventures_and_Variable_Interest1

Ventures and Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2014
Variable Interest Entity, Primary Beneficiary [Member]	'
Variable Interest Entity [Line Items]	'
Schedule of Variable Interest Entities	'
	The carrying amount of the assets and liabilities associated with Fairway included in the unaudited consolidated balance sheet are as follows:
		As of
		September 30,
		2014
		(In $ millions)
	Cash and cash equivalents	6
	Property, plant and equipment	388
	Other assets(1)	24
	Total assets(2)	418
	Current liabilities	37
	Total liabilities(3)	37
	______________________________
	(1)	Includes prepaid intangible assets with a weighted average amortization period of 28 years.
	(2)	Assets can only be used to settle the obligations of Fairway.
	(3)	Represents amounts owed by Fairway for reimbursement of expenditures.
Variable Interest Entity, Not Primary Beneficiary [Member]	'
Variable Interest Entity [Line Items]	'
Schedule of Variable Interest Entities	'
	The carrying amount of the assets and liabilities associated with the obligations to nonconsolidated VIEs, as well as the maximum exposure to loss relating to these nonconsolidated VIEs are as follows:
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Property, plant and equipment, net	101	111
	Trade payables	45	56
	Current installments of long-term debt	9	8
	Long-term debt	128	136
	Total liabilities	182	200
	Maximum exposure to loss	300	318

Marketable_Securities_at_Fair_1

Marketable Securities, at Fair Value (Tables)	9 Months Ended
	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Schedule of Available-for-sale Securities	'
	The amortized cost, gross unrealized gain, gross unrealized loss and fair values for available-for-sale securities by major security type are as follows:
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Mutual Funds
	Amortized cost	36	41
	Gross unrealized gain	—	—
	Gross unrealized loss	—	—
	Fair value	36	41

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Schedule of Inventories	'
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Finished goods	570	571
	Work-in-process	49	59
	Raw materials and supplies	152	174
	Total	771	804

Current_Other_Liabilities_Tabl

Current Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Other Liabilities, Current [Abstract]	'
Schedule of Current Other Liabilities	'
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Asset retirement obligations	8	29
	Current portion of benefit obligations	46	78
	Customer rebates	45	48
	Derivatives (Note 15)	11	12
	Environmental (Note 11)	20	30
	Insurance	12	14
	Interest	31	24
	Restructuring (Note 13)	29	60
	Salaries and benefits	122	96
	Sales and use tax/foreign withholding tax payable	14	12
	Uncertain tax positions	58	64
	Other	87	74
	Total	483	541

Noncurrent_Other_Liabilities_T

Noncurrent Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Other Liabilities, Noncurrent [Abstract]	'
Schedule of Noncurrent Other Liabilities	'
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Asset retirement obligations	26	18
	Deferred proceeds	48	53
	Deferred revenue	24	28
	Derivatives (Note 15)	13	3
	Environmental (Note 11)	71	67
	Income taxes payable	20	20
	Insurance	50	50
	Restructuring (Note 13)	—	2
	Other	43	46
	Total	295	287

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of Short-term Debt	'
		As of		As of
		September 30,		December 31,
		2014		2013
		(In $ millions)
	Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
	Current installments of long-term debt	625		24
	Short-term borrowings, including amounts due to affiliates(1)	105		103
	Accounts receivable securitization facility(2)	35		50
	Total	765		177
	______________________________
	(1)	The weighted average interest rate was 3.9% and 4.4% as of September 30, 2014 and December 31, 2013, respectively.
	(2)	The weighted average interest rate was 0.7% as of September 30, 2014 and December 31, 2013.
Schedule of Long-term Debt	'
		As of		As of
		September 30,		December 31,
		2014		2013
		(In $ millions)
	Long-Term Debt
	Senior credit facilities - Term C-2 loan due 2016	35		978
	Senior credit facilities - Term C-3 loan due 2018	914		—
	Senior unsecured notes due 2018, interest rate of 6.625%	600		600
	Senior unsecured notes due 2019, interest rate of 3.250%	378		—
	Senior unsecured notes due 2021, interest rate of 5.875%	400		400
	Senior unsecured notes due 2022, interest rate of 4.625%	500		500
	Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 5.7% to 6.7%	169		169
	Obligations under capital leases due at various dates through 2054	268		264
	Subtotal	3,264		2,911
	Current installments of long-term debt	(625	)	(24	)
	Total	2,639		2,887
Schedule of First Lien Senior Secured Leverage Ratios	'
	The Company's amended first lien senior secured leverage ratios under the revolving credit facility are as follows:
	As of September 30, 2014
	Maximum		Estimate	Estimate, If Fully Drawn
	3.9		0.67	1.27
Schedule of Balances Available for Borrowing	'
	The Company's balances available for borrowing are as follows:
		As of
		September 30,
		2014
		(In $ millions)
	Revolving Credit Facility
	Borrowings outstanding	—
	Letters of credit issued	—
	Available for borrowing	900
	Accounts Receivable Securitization Facility
	Borrowings outstanding	35
	Letters of credit issued	79
	Available for borrowing	21

Benefit_Obligations_Tables

Benefit Obligations (Tables)	9 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Schedule of Net Periodic Benefit Costs Recognized	'
	The components of net periodic benefit cost are as follows:
		Three Months Ended September 30,							Nine Months Ended September 30,
		2014				2013			2014				2013
		Pension		Post-retirement		Pension		Post-retirement	Pension		Post-retirement		Pension		Post-retirement
		Benefits		Benefits		Benefits		Benefits	Benefits		Benefits		Benefits		Benefits
		(In $ millions)							(In $ millions)
	Service cost	3		—		9		—	9		1		26		2
	Interest cost	41		1		39		3	126		3		116		8
	Expected return on plan assets	(54	)	—		(57	)	—	(162	)	—		(169	)	—
	Amortization of prior service cost (credit), net	—		(21	)	—		—	—		(62	)	1		—
	Total	(10	)	(20	)	(9	)	3	(27	)	(58	)	(26	)	10
Schedule of Company Commitments to Fund Benefit Obligations	'
	Benefit obligation funding is as follows:
		As of		Total
		September 30,		Expected
		2014		2014
		(In $ millions)
	Cash contributions to defined benefit pension plans	24		47
	Benefit payments to nonqualified pension plans	17		22
	Benefit payments to other postretirement benefit plans	42		54

Environmental_Tables

Environmental (Tables)	9 Months Ended
	Sep. 30, 2014
Environmental Remediation Obligations [Abstract]	'
Schedule of Environmental Remediation Reserves	'
	The components of environmental remediation reserves are as follows:
		As of	As of
		September 30,	December 31,
		2014	2013
		(In $ millions)
	Demerger obligations (Note 17)	27	27
	Divestiture obligations (Note 17)	22	21
	Active sites	27	32
	US Superfund sites	12	13
	Other environmental remediation reserves	3	4
	Total	91	97

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Schedule of Dividend Increases	'
	The Company's Board of Directors approved increases in the Company's Common Stock cash dividend rates as follows:
		Increase		Quarterly Common		Annual Common		Effective Date
				Stock Cash Dividend		Stock Cash Dividend
		(In percentages)		(In $ per share)
	Apr-13	20		0.09		0.36		May-13
	Jul-13	100		0.18		0.72		Aug-13
	Apr-14	39		0.25		1		May-14
Schedule of Treasury Stock	'
	Treasury Stock
	The Company's Board of Directors authorized the repurchase of Common Stock as follows:
		Authorized Amount
		(In $ millions)
	Feb-08	400
	Oct-08	100
	Apr-11	129
	Oct-12	264
	Feb-14	172
	As of September 30, 2014	1,065
	These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. This repurchase program does not have an expiration date.
	The share repurchase activity pursuant to this authorization is as follows:
		Nine Months Ended								Total From
		September 30,								Feb-08
										Through
		2014				2013				30-Sep-14
	Shares repurchased	3,515,301				2,096,320			(1)	19,844,008			(2)
	Average purchase price per share	$	57.19			$	48.58			$	43.64
	Amount spent on repurchased shares (in millions)	$	201			$	102			$	866
	______________________________
	(1)	Excludes 6,021 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.
	(2)	Excludes 11,844 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.
Schedule of Components of Other Comprehensive Income (Loss), Net	'
	Other Comprehensive Income (Loss), Net
		Three Months Ended September 30,
		2014									2013
		Gross			Income			Net			Gross			Income		Net
		Amount			Tax			Amount			Amount			Tax		Amount
					(Provision)									(Provision)
					Benefit									Benefit
		(In $ millions)
	Unrealized gain (loss) on marketable securities	—			—			—			1		(1)	—		1
	Foreign currency translation	(127	)		3			(124	)		44			(2	)	42
	Gain (loss) from cash flow hedges	(8	)		3			(5	)		2		(2)	(1	)	1
	Pension and postretirement benefits	(16	)		8			(8	)		—			—		—
	Total	(151	)		14			(137	)		47			(3	)	44
	______________________________
	(1)	Amount includes $1 million of unrealized gains related to the Company's equity method investments.
	(2)	Amount includes $1 million of gains associated with the Company's equity method investments.
		Nine Months Ended September 30,
		2014									2013
		Gross			Income			Net			Gross			Income		Net
		Amount			Tax			Amount			Amount			Tax		Amount
					(Provision)									(Provision)
					Benefit									Benefit
		(In $ millions)
	Unrealized gain (loss) on marketable securities	—			—			—			1		(1)	—		1
	Foreign currency translation	(142	)		1			(141	)		41			(4	)	37
	Gain (loss) from cash flow hedges	(11	)		—			(11	)		7			(3	)	4
	Pension and postretirement benefits	(57	)		23			(34	)		—		(2)	—		—
	Total	(210	)		24			(186	)		49			(7	)	42
	______________________________
	(1)	Amount includes $1 million of unrealized gains related to the Company's equity method investments.
	(2)	Amount includes amortization of actuarial gains of $1 million related to the Company's equity method investments.
Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss), Net	'
	Adjustments to Accumulated other comprehensive income (loss), net, are as follows:
		Unrealized			Foreign			Gain (Loss)			Pension			Accumulated
		Gain (Loss)			Currency			from Cash			and			Other
		on			Translation			Flow			Postretire-			Comprehensive
		Marketable						Hedges			ment			Income
		Securities						(Note 15)			Benefits			(Loss), Net
		(Note 5)									(Note 10)
		(In $ millions)
	As of December 31, 2013	—			(3	)		(44	)		43			(4	)
	Other comprehensive income before reclassifications	—			(142	)		(14	)		—			(156	)
	Amounts reclassified from accumulated other comprehensive income (loss)	—			—			3			(57	)		(54	)
	Income tax (provision) benefit	—			1			—			23			24
	As of September 30, 2014	—			(144	)		(55	)		9			(190	)

Other_Charges_Gains_Net_Tables

Other (Charges) Gains, Net (Tables)	9 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
Schedule of Other (Charges) Gains, Net	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
		(In $ millions)
	Employee termination benefits	(3	)	—		(6	)	(3	)
	Kelsterbach plant relocation	—		(2	)	—		(6	)
	Asset impairments	—		(2	)	—		(2	)
	Plant/office closures	1		—		2		—
	Commercial disputes	21		—		21		—
	Other	1		—		4		—
	Total	20		(4	)	21		(11	)
Schedule of Restructuring Reserves	'
	The changes in the restructuring reserves by business segment are as follows:
		Advanced		Consumer		Industrial		Acetyl			Other		Total
		Engineered		Specialties		Specialties		Intermediates
		Materials
		(In $ millions)
	Employee Termination Benefits
	As of December 31, 2013	4		3		2		16			4		29
	Additions	1		—		1		4			—		6
	Cash payments	(1	)	(1	)	(2	)	(13	)		(1	)	(18	)
	Other changes			—		—		—			—		—
	Exchange rate changes	—		—		—		—			—		—
	As of September 30, 2014	4		2		1		7			3		17
	Plant/Office Closures
	As of December 31, 2013	—		—		—		33			—		33
	Additions	—		—		—		—			—		—
	Cash payments	—		—		—		(7	)		—		(7	)
	Other changes	—		—		—		(12	)	(1)	—		(12	)
	Exchange rate changes	—		—		—		(2	)		—		(2	)
	As of September 30, 2014	—		—		—		12			—		12
	Total	4		2		1		19			3		29
	______________________________
	(1)	Includes a $10 million non-cash reduction to take-or-pay contract termination penalties resulting from the closure of the Company's VAM facility in Tarragona, Spain (Note 3).

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Schedule of Effective Tax Rate	'
		Three Months Ended September 30,		Nine Months Ended September 30,
		2014	2013	2014	2013
		(In percentages)
	Effective income tax rate	26	25	27	32

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Interest Rate Swap Derivatives	'
	US-dollar interest rate swap derivative arrangements are as follows:
	As of September 30, 2014
	Notional Value		Effective Date		Expiration Date		Fixed Rate (1)
	(In $ millions)						(In percentages)
	500		January 2, 2014		January 2, 2016		1.02
	______________________________
	(1)	Fixes the LIBOR portion of the Company's US-dollar denominated variable rate borrowings (Note 9).
	As of December 31, 2013
	Notional Value		Effective Date		Expiration Date		Fixed Rate (1)
	(In $ millions)						(In percentages)
	1,100		January 2, 2012		January 2, 2014		1.71
	500		January 2, 2014		January 2, 2016		1.02
	______________________________
	(1)	Fixes the LIBOR portion of the Company's US-dollar denominated variable rate borrowings (Note 9).
Schedule of Notional Amounts of Foreign Currency Derivatives	'
	Gross notional values of the foreign currency forwards and swaps are as follows:
		As of			As of
		September 30,			December 31,
		2014			2013
		(In $ millions)
	Total	608			869
Schedule of Cross Currency Swap Derivatives [Table Text Block]	'
	The cross-currency swap agreements are as follows:
	As of September 30, 2014
	Notional Value		Effective Date		Expiration Date		Fixed Rate
	(In millions)						(In percentages)
	$250	(1)	September 11, 2014		September 11, 2020		4.27
	€ 193	(2)	September 11, 2014		September 11, 2020		2.63
	$225	(1)	April 17, 2014		April 17, 2019		3.62
	€ 162	(2)	April 17, 2014		April 17, 2019		2.77
	______________________________
	(1)	Represents the notional amount due from the counterparty at the maturity of the contract.
	(2)	Represents the notional amount due to the counterparty at the maturity of the contract.
Schedule of Changes in Fair Value of Derivatives	'
	Information regarding changes in the fair value of the Company's derivative and non-derivative instruments is as follows:
		Three Months Ended September 30,
		2014						2013
		Gain (Loss)			Gain (Loss)			Gain (Loss)			Gain (Loss)
		Recognized in			Recognized in			Recognized in			Recognized in
		Other			Earnings			Other			Earnings
		Comprehensive			(Loss)			Comprehensive			(Loss)
		Income (Loss)						Income (Loss)
		(In $ millions)
	Designated as Cash Flow Hedges
	Interest rate swaps	—			(1	)	(2)	(2	)	(5)	(3	)	(2)
	Cross-currency swaps	(9	)	(1)	25		(3)	—			—
	Total	(9	)		24			(2	)		(3	)
	Designated as a Net Investment Hedge
	3.250% Notes	9			—			—			—
	Not Designated as Hedges
	Foreign currency forwards and swaps	—			(4	)	(4)	—			(10	)	(4)
	______________________________
	(1)	Excludes $3 million of tax benefit recognized in Other comprehensive income (loss).
	(2)	Reclassified from Accumulated other comprehensive income (loss), net to Interest income (expense) in the unaudited interim consolidated statements of operations.
	(3)	Included in Other income (expense), net for non-operating activity or Interest income (expense) for coupon interest in the unaudited interim consolidated statements of operations.
	(4)	Included in Foreign exchange gain (loss), net for operating activity or Other income (expense), net for non-operating activity in the unaudited interim consolidated statements of operations.
	(5)	Excludes $1 million of gains associated with the Company's equity method investments' derivative activity and $1 million of tax expense recognized in Other comprehensive income (loss).
		Nine Months Ended September 30,
		2014						2013
		Gain (Loss)			Gain (Loss)			Gain (Loss)			Gain (Loss)
		Recognized in			Recognized in			Recognized in			Recognized in
		Other			Earnings			Other			Earnings
		Comprehensive			(Loss)			Comprehensive			(Loss)
		Income (Loss)						Income (Loss)
		(In $ millions)
	Designated as Cash Flow Hedges
	Interest rate swaps	(1	)	(1)	(3	)	(3)	(1	)	(6)	(8	)	(3)
	Cross-currency swaps	(13	)	(2)	28		(4)	—			—
	Total	(14	)		25			(1	)		(8	)
	Designated as a Net Investment Hedge
	3.250% Notes	9			—			—			—
	Not Designated as Hedges
	Foreign currency forwards and swaps	—			(9	)	(5)	—			(14	)	(5)
	______________________________
	-1	Excludes $4 million of tax expense recognized in Other comprehensive income (loss).
	(2)	Excludes $4 million of tax benefit recognized in Other comprehensive income (loss).
	(3)	Reclassified from Accumulated other comprehensive income (loss), net to Interest income (expense) in the unaudited interim consolidated statements of operations.
	(4)	Included in Other income (expense), net for non-operating activity or Interest income (expense) for coupon interest in the unaudited interim consolidated statements of operations.
	(5)	Included in Foreign exchange gain (loss), net for operating activity or Other income (expense), net for non-operating activity in the unaudited interim consolidated statements of operations.
	(6)	Excludes $3 million of tax expense recognized in Other comprehensive income (loss).
Offsetting Assets	'
		As of			As of
		September 30,			December 31,
		2014			2013
		(In $ millions)
	Derivative Assets
	Gross amount recognized	33			1
	Gross amount offset in the consolidated balance sheets	—			—
	Net amount presented in the consolidated balance sheets	33			1
	Gross amount not offset in the consolidated balance sheets	5			1
	Net amount	28			—
Offsetting Liabilities	'
		As of			As of
		September 30,			December 31,
		2014			2013
		(In $ millions)
	Derivative Liabilities
	Gross amount recognized	24			16
	Gross amount offset in the consolidated balance sheets	—			1
	Net amount presented in the consolidated balance sheets	24			15
	Gross amount not offset in the consolidated balance sheets	5			1
	Net amount	19			14

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis	'
	Assets and liabilities measured at fair value on a recurring basis are as follows:
			Fair Value Measurement
		Balance Sheet Classification	Quoted Prices		Significant		Total
			in Active		Other
			Markets for		Observable
			Identical		Inputs
			Assets		(Level 2)
			(Level 1)
			(In $ millions)
	As of September 30, 2014
	Mutual funds	Marketable securities, at fair value	36		—		36
	Derivatives Designated as Cash Flow Hedges
	Cross-currency swaps	Current Other assets	—		2		2
	Cross-currency swaps	Noncurrent Other assets	—		27		27
	Derivatives Not Designated as Hedges
	Foreign currency forwards and swaps	Current Other assets	—		4		4
	Total assets		36		33		69
	Derivatives Designated as Cash Flow Hedges
	Interest rate swaps	Current Other liabilities	—		(4	)	(4	)
	Interest rate swaps	Noncurrent Other liabilities	—		(1	)	(1	)
	Cross-currency swaps	Current Other liabilities	—		(2	)	(2	)
	Cross-currency swaps	Noncurrent Other liabilities	—		(12	)	(12	)
	Designated as a Net Investment Hedge
	3.250% Notes(1)	Long-term Debt	—		—		—
	Derivatives Not Designated as Hedges
	Foreign currency forwards and swaps	Current Other liabilities	—		(5	)	(5	)
	Total liabilities		—		(24	)	(24	)
	As of December 31, 2013
	Mutual funds	Marketable securities, at fair value	41		—		41
	Derivatives Not Designated as Hedges
	Foreign currency forwards and swaps	Current Other assets	—		1		1
	Total assets		41		1		42
	Derivatives Designated as Cash Flow Hedges
	Interest rate swaps	Current Other liabilities	—		(5	)	(5	)
	Interest rate swaps	Noncurrent Other liabilities	—		(3	)	(3	)
	Derivatives Not Designated as Hedges
	Interest rate swaps	Current Other liabilities	—		(2	)	(2	)
	Foreign currency forwards and swaps	Current Other liabilities	—		(5	)	(5	)
	Total liabilities		—		(15	)	(15	)
	______________________________
	(1)	Included in the unaudited consolidated balance sheets at carrying amount.
Schedule of Carrying Values and Fair Values of Financial Instruments	'
	Carrying values and fair values of financial instruments that are not carried at fair value are as follows:
				Fair Value Measurement
		Carrying		Significant Other		Unobservable		Total
		Amount		Observable		Inputs
				Inputs		(Level 3)
				(Level 2)
				(In $ millions)
	As of September 30, 2014
	Cost investments	145		—		—		—
	Insurance contracts in nonqualified trusts	57		57		—		57
	Long-term debt, including current installments of long-term debt	3,264		3,028		268		3,296
	As of December 31, 2013
	Cost investments	145		—		—		—
	Insurance contracts in nonqualified trusts	62		62		—		62
	Long-term debt, including current installments of long-term debt	2,911		2,696		264		2,960

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Schedule of Business Segments	'
		Advanced		Consumer		Industrial		Acetyl			Other		Eliminations		Consolidated
		Engineered		Specialties		Specialties		Intermediates			Activities
		Materials
		(In $ millions)
		Three Months Ended September 30, 2014
	Net sales	366		291	(1)	314		937		(1)	—		(139	)	1,769
	Other (charges) gains, net	—		16		(1	)	5			—		—		20
	Operating profit (loss)	51		105		16		174			(36	)	—		310
	Equity in net earnings (loss) of affiliates	43		—		—		2			7		—		52
	Depreciation and amortization	27		11		12		21			2		—		73
	Capital expenditures	23		22		7		150			1		—		203		(2)
		Three Months Ended September 30, 2013
	Net sales	346		310	(1)	299		795		(1)	—		(114	)	1,636
	Other (charges) gains, net	(2	)	—		(1	)	(1	)		—		—		(4	)
	Operating profit (loss)	48		85		24		67			(13	)	—		211
	Equity in net earnings (loss) of affiliates	30		—		—		3			8		—		41
	Depreciation and amortization	27		10		13		22			4		—		76
	Capital expenditures	14		33		8		45			2		—		102		(3)
	______________________________
	(1)	Net sales for Acetyl Intermediates and Consumer Specialties include intersegment sales of $137 million and $2 million, respectively, for the three months ended September 30, 2014 and $114 million and $0 million, respectively, for the three months ended September 30, 2013.
	(2)	Includes an increase in accrued capital expenditures of $12 million for the three months ended September 30, 2014.
	(3)	Excludes expenditures related to the relocation of the Company's POM operations in Germany and includes a decrease in accrued capital expenditures of $8 million for the three months ended September 30, 2013.
		Advanced		Consumer		Industrial		Acetyl			Other		Eliminations		Consolidated
		Engineered		Specialties		Specialties		Intermediates			Activities
		Materials
		(In $ millions)
		Nine Months Ended September 30, 2014
	Net sales	1,128		882	(1)	959		2,679		(1)	—		(405	)	5,243
	Other (charges) gains, net	(1	)	16		(1	)	7			—		—		21
	Operating profit (loss)	164		284		60		413			(109	)	—		812
	Equity in net earnings (loss) of affiliates	121		8		—		17			47		—		193
	Depreciation and amortization	80		32		38		61			9		—		220
	Capital expenditures	43		72		17		316			4		—		452		(2)
		As of September 30, 2014
	Goodwill and intangibles, net	350		266		54		217			—		—		887
	Total assets	2,544		1,498		951		2,488			2,229		—		9,710
		Nine Months Ended September 30, 2013
	Net sales	1,027		919	(1)	882		2,412		(1)	—		(346	)	4,894
	Other (charges) gains, net	(6	)	—		(3	)	(2	)		—		—		(11	)
	Operating profit (loss)	123		246		57		197			(59	)	—		564
	Equity in net earnings (loss) of affiliates	115		3		—		7			25		—		150
	Depreciation and amortization	83		30		37		65			12		—		227
	Capital expenditures	35		76		19		116			6		—		252		(3)
		As of December 31, 2013
	Goodwill and intangibles, net	368		278		60		234			—		—		940
	Total assets	2,643		1,478		1,002		2,333			1,562		—		9,018
	______________________________
	(1)	Net sales for Acetyl Intermediates and Consumer Specialties include intersegment sales of $403 million and $2 million, respectively, for the nine months ended September 30, 2014 and $342 million and $4 million, respectively, for the nine months ended September 30, 2013.
	(2)	Includes a decrease in accrued capital expenditures of $12 million for the nine months ended September 30, 2014.
	(3)	Excludes expenditures related to the relocation of the Company's POM operations in Germany and includes a decrease in accrued capital expenditures of $7 million for the nine months ended September 30, 2013.

Earnings_Loss_Per_Share_Tables

Earnings (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings (Loss) Per Share	'
		Three Months Ended September 30,			Nine Months Ended September 30,
		2014		2013	2014		2013
		(In $ millions, except share data)
	Amounts Attributable to Celanese Corporation
	Earnings (loss) from continuing operations	258		171	713		445
	Earnings (loss) from discontinued operations	(5	)	1	(5	)	2
	Net earnings (loss)	253		172	708		447
	Weighted average shares - basic	154,427,554		158,501,075	155,552,777		159,282,314
	Dilutive stock options	125,259		230,110	150,099		229,920
	Dilutive restricted stock units	621,715		364,346	622,635		334,359
	Weighted average shares - diluted	155,174,528		159,095,531	156,325,511		159,846,593
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	'
	Securities not included in the computation of diluted net earnings per share as their effect would have been antidilutive are as follows:
		Three Months Ended September 30,			Nine Months Ended September 30,
		2014		2013	2014		2013
	Stock options	—		38,140	—		94,631
	Restricted stock units	—		—	—		—
	Total	—		38,140	—		94,631

Consolidating_Guarantor_Financ1

Consolidating Guarantor Financial Information (Tables)	9 Months Ended
	Sep. 30, 2014
Consolidating Guarantor Financial Information [Abstract]	'
Schedule of Consolidating Statement of Operations	'
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
		Three Months Ended September 30, 2014
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net sales	—		—		749		1,340		(320	)	1,769
	Cost of sales	—		—		(492	)	(1,133	)	292		(1,333	)
	Gross profit	—		—		257		207		(28	)	436
	Selling, general and administrative expenses	—		—		(18	)	(100	)	—		(118	)
	Amortization of intangible assets	—		—		(1	)	(4	)	—		(5	)
	Research and development expenses	—		—		(12	)	(10	)	—		(22	)
	Other (charges) gains, net	—		—		21		(1	)	—		20
	Foreign exchange gain (loss), net	—		—		—		1		—		1
	Gain (loss) on disposition of businesses and assets, net	—		—		(3	)	1		—		(2	)
	Operating profit (loss)	—		—		244		94		(28	)	310
	Equity in net earnings (loss) of affiliates	252		291		49		40		(580	)	52
	Interest expense	—		(52	)	(6	)	(20	)	37		(41	)
	Refinancing expense	—		(4	)	—		—		—		(4	)
	Interest income	—		18		18		4		(37	)	3
	Dividend income - cost investments	—		—		—		29		—		29
	Other income (expense), net	—		—		—		(2	)	—		(2	)
	Earnings (loss) from continuing operations before tax	252		253		305		145		(608	)	347
	Income tax (provision) benefit	1		(1	)	(82	)	(16	)	8		(90	)
	Earnings (loss) from continuing operations	253		252		223		129		(600	)	257
	Earnings (loss) from operation of discontinued operations	—		—		(7	)	—		—		(7	)
	Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
	Income tax (provision) benefit from discontinued operations	—		—		2		—		—		2
	Earnings (loss) from discontinued operations	—		—		(5	)	—		—		(5	)
	Net earnings (loss)	253		252		218		129		(600	)	252
	Net (earnings) loss attributable to noncontrolling interests	—		—		—		1		—		1
	Net earnings (loss) attributable to Celanese Corporation	253		252		218		130		(600	)	253
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
		Three Months Ended September 30, 2013
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net sales	—		—		709		1,250		(323	)	1,636
	Cost of sales	—		—		(477	)	(1,136	)	323		(1,290	)
	Gross profit	—		—		232		114		—		346
	Selling, general and administrative expenses	—		—		(18	)	(79	)	—		(97	)
	Amortization of intangible assets	—		—		(2	)	(4	)	—		(6	)
	Research and development expenses	—		—		(17	)	(7	)	—		(24	)
	Other (charges) gains, net	—		—		(1	)	(3	)	—		(4	)
	Foreign exchange gain (loss), net	—		—		—		(2	)	—		(2	)
	Gain (loss) on disposition of businesses and assets, net	—		—		—		(2	)	—		(2	)
	Operating profit (loss)	—		—		194		17		—		211
	Equity in net earnings (loss) of affiliates	172		200		35		30		(396	)	41
	Interest expense	—		(48	)	(8	)	(19	)	32		(43	)
	Refinancing expense	—		(1	)	—		—		—		(1	)
	Interest income	—		14		17		1		(32	)	—
	Dividend income - cost investments	—		—		—		22		—		22
	Other income (expense), net	—		—		—		(2	)	—		(2	)
	Earnings (loss) from continuing operations before tax	172		165		238		49		(396	)	228
	Income tax (provision) benefit	—		7		(63	)	(1	)	—		(57	)
	Earnings (loss) from continuing operations	172		172		175		48		(396	)	171
	Earnings (loss) from operation of discontinued operations	—		—		1		—		—		1
	Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
	Income tax (provision) benefit from discontinued operations	—		—		—		—		—		—
	Earnings (loss) from discontinued operations	—		—		1		—		—		1
	Net earnings (loss)	172		172		176		48		(396	)	172
	Net (earnings) loss attributable to noncontrolling interests	—		—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	172		172		176		48		(396	)	172
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
	Nine Months Ended September 30, 2014
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net sales	—		—		2,135		3,997		(889	)	5,243
Cost of sales	—		—		(1,454	)	(3,433	)	866		(4,021	)
Gross profit	—		—		681		564		(23	)	1,222
Selling, general and administrative expenses	—		—		(45	)	(296	)	—		(341	)
Amortization of intangible assets	—		—		(5	)	(11	)	—		(16	)
Research and development expenses	—		—		(38	)	(30	)	—		(68	)
Other (charges) gains, net	—		—		21		—		—		21
Foreign exchange gain (loss), net	—		—		—		(1	)	—		(1	)
Gain (loss) on disposition of businesses and assets, net	—		—		(8	)	3		—		(5	)
Operating profit (loss)	—		—		606		229		(23	)	812
Equity in net earnings (loss) of affiliates	706		801		127		165		(1,606	)	193
Interest expense	—		(147	)	(18	)	(60	)	105		(120	)
Refinancing expense	—		(4	)	—		—		—		(4	)
Interest income	—		49		53		8		(105	)	5
Dividend income - cost investments	—		—		—		87		—		87
Other income (expense), net	—		—		4		(5	)	—		(1	)
Earnings (loss) from continuing operations before tax	706		699		772		424		(1,629	)	972
Income tax (provision) benefit	2		7		(204	)	(73	)	6		(262	)
Earnings (loss) from continuing operations	708		706		568		351		(1,623	)	710
Earnings (loss) from operation of discontinued operations	—		—		(8	)	—		—		(8	)
Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—		—		3		—		—		3
Earnings (loss) from discontinued operations	—		—		(5	)	—		—		(5	)
Net earnings (loss)	708		706		563		351		(1,623	)	705
Net (earnings) loss attributable to noncontrolling interests	—		—		—		3		—		3
Net earnings (loss) attributable to Celanese Corporation	708		706		563		354		(1,623	)	708
CELANESE CORPORATION AND SUBSIDIARIES
UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS
	Nine Months Ended September 30, 2013
	Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
	Guarantor				Guarantors		Guarantors
	(In $ millions)
Net sales	—		—		2,121		3,699		(926	)	4,894
Cost of sales	—		—		(1,455	)	(3,369	)	928		(3,896	)
Gross profit	—		—		666		330		2		998
Selling, general and administrative expenses	—		—		(65	)	(251	)	—		(316	)
Amortization of intangible assets	—		—		(9	)	(17	)	—		(26	)
Research and development expenses	—		—		(48	)	(25	)	—		(73	)
Other (charges) gains, net	—		—		3		(10	)	(4	)	(11	)
Foreign exchange gain (loss), net	—		—		—		(5	)	—		(5	)
Gain (loss) on disposition of businesses and assets, net	—		—		—		(3	)	—		(3	)
Operating profit (loss)	—		—		547		19		(2	)	564
Equity in net earnings (loss) of affiliates	443		528		117		124		(1,062	)	150
Interest expense	—		(144	)	(27	)	(51	)	92		(130	)
Refinancing expense	—		(1	)	—		—		—		(1	)
Interest income	—		41		48		4		(92	)	1
Dividend income - cost investments	—		—		—		69		—		69
Other income (expense), net	—		—		—		1		—		1
Earnings (loss) from continuing operations before tax	443		424		685		166		(1,064	)	654
Income tax (provision) benefit	4		19		(176	)	(56	)	—		(209	)
Earnings (loss) from continuing operations	447		443		509		110		(1,064	)	445
Earnings (loss) from operation of discontinued operations	—		—		3		—		—		3
Gain (loss) on disposition of discontinued operations	—		—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—		—		(1	)	—		—		(1	)
Earnings (loss) from discontinued operations	—		—		2		—		—		2
Net earnings (loss)	447		443		511		110		(1,064	)	447
Net (earnings) loss attributable to noncontrolling interests	—		—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	447		443		511		110		(1,064	)	447
Schedule of Consolidating Statements of Comprehensive Income (Loss)	'
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
		Three Months Ended September 30, 2014
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net earnings (loss)	253		252		218		129		(600	)	252
	Other comprehensive income (loss), net of tax
	Unrealized gain (loss) on marketable securities	—		—		—		—		—		—
	Foreign currency translation	(124	)	(124	)	(4	)	(16	)	144		(124	)
	Gain (loss) from cash flow hedges	(5	)	(5	)	—		(6	)	11		(5	)
	Pension and postretirement benefits	(8	)	(8	)	(8	)	—		16		(8	)
	Total other comprehensive income (loss), net of tax	(137	)	(137	)	(12	)	(22	)	171		(137	)
	Total comprehensive income (loss), net of tax	116		115		206		107		(429	)	115
	Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		1		—		1
	Comprehensive income (loss) attributable to Celanese Corporation	116		115		206		108		(429	)	116
		Three Months Ended September 30, 2013
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net earnings (loss)	172		172		176		48		(396	)	172
	Other comprehensive income (loss), net of tax
	Unrealized gain (loss) on marketable securities	1		1		1		—		(2	)	1
	Foreign currency translation	42		42		1		(4	)	(39	)	42
	Gain (loss) from cash flow hedges	1		1		1		—		(2	)	1
	Pension and postretirement benefits	—		—		—		—		—		—
	Total other comprehensive income (loss), net of tax	44		44		3		(4	)	(43	)	44
	Total comprehensive income (loss), net of tax	216		216		179		44		(439	)	216
	Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		—		—		—
	Comprehensive income (loss) attributable to Celanese Corporation	216		216		179		44		(439	)	216
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
		Nine Months Ended September 30, 2014
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net earnings (loss)	708		706		563		351		(1,623	)	705
	Other comprehensive income (loss), net of tax
	Unrealized gain (loss) on marketable securities	—		—		—		—		—		—
	Foreign currency translation	(141	)	(141	)	3		(30	)	168		(141	)
	Gain (loss) from cash flow hedges	(11	)	(11	)	—		(9	)	20		(11	)
	Pension and postretirement benefits	(34	)	(34	)	(34	)	—		68		(34	)
	Total other comprehensive income (loss), net of tax	(186	)	(186	)	(31	)	(39	)	256		(186	)
	Total comprehensive income (loss), net of tax	522		520		532		312		(1,367	)	519
	Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		3		—		3
	Comprehensive income (loss) attributable to Celanese Corporation	522		520		532		315		(1,367	)	522
		Nine Months Ended September 30, 2013
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net earnings (loss)	447		443		511		110		(1,064	)	447
	Other comprehensive income (loss), net of tax
	Unrealized gain (loss) on marketable securities	1		1		1		—		(2	)	1
	Foreign currency translation	37		37		4		(2	)	(39	)	37
	Gain (loss) from cash flow hedges	4		4		—		—		(4	)	4
	Pension and postretirement benefits	—		—		—		—		—		—
	Total other comprehensive income (loss), net of tax	42		42		5		(2	)	(45	)	42
	Total comprehensive income (loss), net of tax	489		485		516		108		(1,109	)	489
	Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		—		—		—
	Comprehensive income (loss) attributable to Celanese Corporation	489		485		516		108		(1,109	)	489
Schedule of Consolidating Balance Sheet	'
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED CONSOLIDATING BALANCE SHEET
		As of September 30, 2014
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	ASSETS
	Current Assets
	Cash and cash equivalents	—		—		824		686		—		1,510
	Trade receivables - third party and affiliates	—		—		147		1,043		(174	)	1,016
	Non-trade receivables, net	35		1,113		2,215		490		(3,653	)	200
	Inventories, net	—		—		251		604		(84	)	771
	Deferred income taxes	—		—		75		53		(17	)	111
	Marketable securities, at fair value	—		—		36		—		—		36
	Other assets	—		—		19		43		(19	)	43
	Total current assets	35		1,113		3,567		2,919		(3,947	)	3,687
	Investments in affiliates	2,910		4,664		1,987		592		(9,296	)	857
	Property, plant and equipment, net	—		—		998		2,620		—		3,618
	Deferred income taxes	—		—		270		27		(1	)	296
	Other assets	—		1,915		145		314		(2,009	)	365
	Goodwill	—		—		305		451		—		756
	Intangible assets, net	—		—		68		63		—		131
	Total assets	2,945		7,692		7,340		6,986		(15,253	)	9,710
	LIABILITIES AND EQUITY
	Current Liabilities
	Short-term borrowings and current installments of long-term debt - third party and affiliates	—		2,429		827		356		(2,847	)	765
	Trade payables - third party and affiliates	—		2		399		589		(174	)	816
	Other liabilities	1		62		324		445		(349	)	483
	Deferred income taxes	—		17		—		10		(17	)	10
	Income taxes payable	—		—		552		52		(489	)	115
	Total current liabilities	1		2,510		2,102		1,452		(3,876	)	2,189
	Noncurrent Liabilities
	Long-term debt	—		2,217		830		1,539		(1,947	)	2,639
	Deferred income taxes	—		9		11		206		(1	)	225
	Uncertain tax positions	—		6		8		136		—		150
	Benefit obligations	—		—		870		207		—		1,077
	Other liabilities	—		40		115		209		(69	)	295
	Total noncurrent liabilities	—		2,272		1,834		2,297		(2,017	)	4,386
	Total Celanese Corporation stockholders' equity	2,944		2,910		3,404		3,046		(9,360	)	2,944
	Noncontrolling interests	—		—		—		191		—		191
	Total equity	2,944		2,910		3,404		3,237		(9,360	)	3,135
	Total liabilities and equity	2,945		7,692		7,340		6,986		(15,253	)	9,710
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED CONSOLIDATING BALANCE SHEET
		As of December 31, 2013
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	ASSETS
	Current Assets
	Cash and cash equivalents	—		—		284		700		—		984
	Trade receivables - third party and affiliates	—		—		131		877		(141	)	867
	Non-trade receivables, net	33		482		2,166		586		(2,924	)	343
	Inventories, net	—		—		243		622		(61	)	804
	Deferred income taxes	—		—		74		58		(17	)	115
	Marketable securities, at fair value	—		—		41		—		—		41
	Other assets	—		5		15		24		(16	)	28
	Total current assets	33		487		2,954		2,867		(3,159	)	3,182
	Investments in affiliates	2,667		4,458		1,677		594		(8,555	)	841
	Property, plant and equipment, net	—		—		969		2,456		—		3,425
	Deferred income taxes	—		—		248		49		(8	)	289
	Other assets	—		1,965		144		285		(2,053	)	341
	Goodwill	—		—		305		493		—		798
Intangible assets, net	—		—		64		78		—		142
Total assets	2,700		6,910		6,361		6,822		(13,775	)	9,018
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—		1,713		122		373		(2,031	)	177
Trade payables - third party and affiliates	—		—		312		628		(141	)	799
Other liabilities	1		28		441		513		(442	)	541
Deferred income taxes	—		17		—		10		(17	)	10
Income taxes payable	—		—		460		32		(474	)	18
Total current liabilities	1		1,758		1,335		1,556		(3,105	)	1,545
Noncurrent Liabilities
Long-term debt	—		2,468		825		1,646		(2,052	)	2,887
Deferred income taxes	—		8		—		225		(8	)	225
Uncertain tax positions	—		6		16		178		—		200
Benefit obligations	—		—		943		232		—		1,175
Other liabilities	—		3		91		202		(9	)	287
Total noncurrent liabilities	—		2,485		1,875		2,483		(2,069	)	4,774
Total Celanese Corporation stockholders' equity	2,699		2,667		3,151		2,783		(8,601	)	2,699
Noncontrolling interests	—		—		—		—		—		—
Total equity	2,699		2,667		3,151		2,783		(8,601	)	2,699
Total liabilities and equity	2,700		6,910		6,361		6,822		(13,775	)	9,018
Schedule of Consolidating Statement of Cash Flows	'
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS
		Nine Months Ended September 30, 2014
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net cash provided by (used in) operating activities	303		444		573		304		(828	)	796
	Investing Activities
	Capital expenditures on property, plant and equipment	—		—		(142	)	(47	)	—		(189	)
	Acquisitions, net of cash acquired	—		—		—		—		—		—
	Proceeds from sale of businesses and assets, net	—		—		—		—		—		—
	Deferred proceeds from Kelsterbach plant relocation	—		—		—		—		—		—
	Capital expenditures related to Kelsterbach plant relocation	—		—		—		—		—		—
	Capital expenditures related to Fairway Methanol LLC	—		—		(39	)	(236	)	—		(275	)
	Return of capital from subsidiary	—		28		51		—		(79	)	—
	Contributions to subsidiary	—		—		(143	)	—		143		—
	Intercompany loan receipts (disbursements)	—		4		543		—		(547	)	—
	Other, net	—		—		(8	)	(5	)	—		(13	)
	Net cash provided by (used in) investing activities	—		32		262		(288	)	(483	)	(477	)
	Financing Activities
	Short-term borrowings (repayments), net	—		(543	)	13		(1	)	543		12
	Proceeds from short-term borrowings	—		—		—		47		—		47
	Repayments of short-term borrowings	—		—		—		(70	)	—		(70	)
	Proceeds from long-term debt	—		387		—		—		—		387
	Repayments of long-term debt	—		(7	)	(4	)	(12	)	4		(19	)
	Purchases of treasury stock, including related fees	(201	)	—		—		—		—		(201	)
	Dividends to parent	—		(303	)	(303	)	(222	)	828		—
	Contributions from parent	—		—		—		143		(143	)	—
	Stock option exercises	4		—		—		—		—		4
	Series A common stock dividends	(106	)	—		—		—		—		(106	)
	Return of capital to parent	—		—		—		(79	)	79		—
	Contribution from noncontrolling interest	—		—		—		194		—		194
	Other, net	—		(10	)	(1	)	—		—		(11	)
	Net cash provided by (used in) financing activities	(303	)	(476	)	(295	)	—		1,311		237
	Exchange rate effects on cash and cash equivalents	—		—		—		(30	)	—		(30	)
	Net increase (decrease) in cash and cash equivalents	—		—		540		(14	)	—		526
	Cash and cash equivalents as of beginning of period	—		—		284		700		—		984
	Cash and cash equivalents as of end of period	—		—		824		686		—		1,510
	CELANESE CORPORATION AND SUBSIDIARIES
	UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS
		Nine Months Ended September 30, 2013
		Parent		Issuer		Subsidiary		Non-		Eliminations		Consolidated
		Guarantor				Guarantors		Guarantors
		(In $ millions)
	Net cash provided by (used in) operating activities	144		58		650		44		(288	)	608
	Investing Activities
	Capital expenditures on property, plant and equipment	—		—		(112	)	(87	)	—		(199	)
	Acquisitions, net of cash acquired	—		—		—		—		—		—
	Proceeds from sale of businesses and assets, net	—		—		—		13		—		13
	Deferred proceeds from Kelsterbach plant relocation	—		—		—		—		—		—
	Capital expenditures related to Kelsterbach plant relocation	—		—		—		(6	)	—		(6	)
	Capital expenditures related to Fairway Methanol LLC	—		—		(60	)	—		—		(60	)
	Return of capital from subsidiary	—		—		—		—		—		—
	Contributions to subsidiary	—		—		(20	)	—		20		—
	Intercompany loan receipts (disbursements)	—		4		(92	)	—		88		—
	Other, net	—		—		(26	)	(12	)	—		(38	)
	Net cash provided by (used in) investing activities	—		4		(310	)	(92	)	108		(290	)
	Financing Activities
	Short-term borrowings (repayments), net	—		92		(4	)	(8	)	(92	)	(12	)
	Proceeds from short-term borrowings	—		—		—		154		—		154
	Repayments of short-term borrowings	—		—		—		(51	)	—		(51	)
	Proceeds from long-term debt	—		24		50		—		—		74
	Repayments of long-term debt	—		(32	)	(119	)	(45	)	4		(192	)
Purchases of treasury stock, including related fees	(102	)	—		—		—		—		(102	)
Dividends to parent	—		(144	)	(144	)	—		288		—
Contributions from parent	—		—		—		20		(20	)	—
Stock option exercises	3		—		—		—		—		3
Series A common stock dividends	(55	)	—		—		—		—		(55	)
Return of capital to parent	—		—		—		—		—		—
Contribution from noncontrolling interest	—		—		—		—		—		—
Other, net	—		(2	)	—		—		—		(2	)
Net cash provided by (used in) financing activities	(154	)	(62	)	(217	)	70		180		(183	)
Exchange rate effects on cash and cash equivalents	—		—		—		6		—		6
Net increase (decrease) in cash and cash equivalents	(10	)	—		123		28		—		141
Cash and cash equivalents as of beginning of period	10		—		275		674		—		959
Cash and cash equivalents as of end of period	—		—		398		702		—		1,100

Description_of_the_Company_and2

Description of the Company and Basis of Presentation (Narrative) (Details)	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Consolidated subsidiaries ownership percentage	100.00%

Ventures_and_Variable_Interest2

Ventures and Variable Interest Entities (Schedule of Variable Interest Entities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2014		Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified					Variable Interest Entity, Primary Beneficiary [Member]		Variable Interest Entity, Not Primary Beneficiary [Member]	Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]	'	'	'	'	'		'	'
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	'	'	'	'	'28 years		'	'
Cash and cash equivalents	$1,510	$984	$1,100	$959	$6		'	'
Property, plant and equipment	3,618	3,425	'	'	388		101	111
Other assets	365	341	'	'	24	[1]	'	'
Total assets	9,710	9,018	'	'	418	[2]	'	'
Trade payables	816	799	'	'	'		45	56
Current installments of long-term debt	'	'	'	'	'		9	8
Current liabilities	2,189	1,545	'	'	37		'	'
Long-term debt	'	'	'	'	'		128	136
Total liabilities	'	'	'	'	37	[3]	182	200
Maximum exposure to loss	'	'	'	'	'		$300	$318
[1]	Includes prepaid intangible assets with a weighted average amortization period of 28 years.
[2]	Assets can only be used to settle the obligations of Fairway.
[3]	Represents amounts owed by Fairway for reimbursement of expenditures.

Ventures_and_Variable_Interest3

Ventures and Variable Interest Entities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended				12 Months Ended		3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
					Variable Interest Entity, Primary Beneficiary [Member]	Variable Interest Entity, Primary Beneficiary [Member]	Variable Interest Entity, Primary Beneficiary [Member]	Variable Interest Entity, Primary Beneficiary [Member]	InfraServ Gmbh & Co. Hoechst KG [Member]	InfraServ Gmbh & Co. Hoechst KG [Member]	InfraServ Gmbh & Co. Hoechst KG [Member]
					T		Cash [Member]	Property, Plant and Equipment [Member]	Other Activities [Member]	Consumer Specialties [Member]	Acetyl Intermediates [Member]
Variable Interest Entity [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Gains (Losses) on Restructuring of Debt	'	'	'	'	'	'	'	'	$29	'	'
Equity in net earnings (loss) of affiliates	52	41	193	150	'	'	'	'	'	6	13
Ownership percentage	'	'	'	'	50.00%	'	'	'	'	'	'
Contributions from noncontrolling interests	'	'	'	'	'	'	6	103	'	'	'
Expected production capacity per year	'	'	'	'	1,300,000	'	'	'	'	'	'
Pre-formation costs	'	'	'	'	'	$70	'	'	'	'	'

Marketable_Securities_at_Fair_2

Marketable Securities, at Fair Value (Schedule of Available-for-sale Securities) (Details) (Investments [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Investments [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	$36	$41
Gross unrealized gain	0	0
Gross unrealized loss	0	0
Fair value	$36	$41

Inventories_Details

Inventories (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Finished goods	$570	$571
Work-in-process	49	59
Raw materials and supplies	152	174
Total	$771	$804

Current_Other_Liabilities_Deta

Current Other Liabilities (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Other Liabilities, Current [Abstract]	'	'
Asset retirement obligations	$8	$29
Current portion of benefit obligations	46	78
Customer rebates	45	48
Derivatives (Note 15)	11	12
Environmental (Note 11)	20	30
Insurance	12	14
Interest	31	24
Restructuring (Note 13)	29	60
Salaries and benefits	122	96
Sales and use tax/foreign withholding tax payable	14	12
Uncertain tax positions	58	64
Other	87	74
Total	$483	$541

Noncurrent_Other_Liabilities_D

Noncurrent Other Liabilities (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Other Liabilities, Noncurrent [Abstract]	'	'
Asset retirement obligations	$26	$18
Deferred proceeds	48	53
Deferred revenue	24	28
Derivatives (Note 15)	13	3
Environmental (Note 11)	71	67
Income taxes payable	20	20
Insurance	50	50
Restructuring (Note 13)	0	2
Other	43	46
Total	$295	$287

Debt_Schedule_of_Shortterm_Deb

Debt (Schedule of Short-term Debt) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates	'		'
Current installments of long-term debt	$625		$24
Short-term borrowings, including amounts due to affiliates(1)	105	[1]	103	[1]
Total	765		177
Weighted average interest rate, short-term borrowings	3.90%		4.40%
Accounts Receivable Securitization Facility [Member]	'		'
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates	'		'
Accounts receivable securitization facility(2)	$35	[2]	$50	[2]
Weighted average interest rate, credit facility	0.70%		0.70%
[1]	The weighted average interest rate was 3.9% and 4.4% as of SeptemberB 30, 2014 and DecemberB 31, 2013, respectively.
[2]	The weighted average interest rate was 0.7% as of SeptemberB 30, 2014 and DecemberB 31, 2013.

Debt_Schedule_of_Longterm_Debt

Debt (Schedule of Long-term Debt) (Details)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2010

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

31-May-11

Sep. 30, 2014

Dec. 31, 2013

Nov. 30, 2012

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

In Millions, unless otherwise specified

USD ($)

USD ($)

Term C-2 Loan Facility [Member]

Term C-2 Loan Facility [Member]

Term C-2 Loan Facility [Member]

Term C-2 Loan Facility [Member]

Term C-3 Loan Facility [Member]

Term C-3 Loan Facility [Member]

Term C-3 Loan Facility [Member]

Senior Unsecured Notes Due 2018 [Member]

Senior Unsecured Notes Due 2018 [Member]

Senior Unsecured Notes Due 2018 [Member]

Senior Unsecured Notes Due 2019 [Member]

Senior Unsecured Notes Due 2019 [Member]

Senior Unsecured Notes Due 2019 [Member]

Senior Unsecured Notes Due 2021 [Member]

Senior Unsecured Notes Due 2021 [Member]

Senior Unsecured Notes Due 2021 [Member]

Senior Unsecured Notes Due 2022 [Member]

Senior Unsecured Notes Due 2022 [Member]

Senior Unsecured Notes Due 2022 [Member]

Pollution Control and Industrial Revenue Bonds [Member]

Pollution Control and Industrial Revenue Bonds [Member]

Obligations Under Capital Leases [Member]

Obligations Under Capital Leases [Member]

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Long-Term Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior credit facilities - Term loans

'

'

'

$35

€ 28

$978

$914

$914

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior unsecured notes

'

'

'

'

'

'

'

'

'

'

600

600

378

378

0

'

400

400

'

500

500

'

'

'

'

Date of maturity

'

'

'

'

'

'

'

'

'

15-Oct-18

15-Oct-18

15-Oct-18

15-Oct-19

15-Oct-19

15-Oct-19

15-Jun-21

15-Jun-21

15-Jun-21

15-Nov-22

15-Nov-22

15-Nov-22

'

'

'

'

Interest rate, stated percentage

'

'

'

'

'

'

'

'

'

6.63%

6.63%

6.63%

3.25%

3.25%

3.25%

5.88%

5.88%

5.88%

4.63%

4.63%

4.63%

'

'

'

'

Credit facility, expiration date

'

'

15-Oct-16

15-Oct-16

15-Oct-16

15-Oct-16

15-Oct-18

15-Oct-18

15-Oct-18

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other long-term debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

169

169

'

'

Interest rate, stated percentage range, minimum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.70%

'

'

'

Interest rate, stated percentage range, maximum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.70%

'

'

'

Year of maturity, range end

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-Nov-30

'

31-Mar-54

'

Capital lease obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

268

264

Subtotal

3,264

2,911

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current installments of long-term debt

-625

-24

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total

$2,639

$2,887

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Senior_Notes_and_Senior_C

Debt (Senior Notes and Senior Credit Facilities Narrative) (Details)

3 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 24, 2014

Nov. 30, 2012

Sep. 30, 2014

Dec. 31, 2013

31-May-11

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2010

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Oct. 15, 2014

Oct. 15, 2014

USD ($)

USD ($)

USD ($)

USD ($)

Senior Unsecured Notes Due 2019 [Member]

Senior Unsecured Notes Due 2019 [Member]

Senior Unsecured Notes Due 2019 [Member]

Senior Unsecured Notes Due 2019 [Member]

Senior Unsecured Notes Due 2022 [Member]

Senior Unsecured Notes Due 2022 [Member]

Senior Unsecured Notes Due 2022 [Member]

Senior Unsecured Notes Due 2021 [Member]

Senior Unsecured Notes Due 2021 [Member]

Senior Unsecured Notes Due 2021 [Member]

Senior Unsecured Notes Due 2018 [Member]

Senior Unsecured Notes Due 2018 [Member]

Senior Unsecured Notes Due 2018 [Member]

Term C-3 Loan Facility [Member]

Term C-3 Loan Facility [Member]

Term C-3 Loan Facility [Member]

Term C-3 Loan Facility [Member]

Term C-3 Loan Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Term C-2 Loan Facility [Member]

Term C-2 Loan Facility [Member]

Term C-2 Loan Facility [Member]

Term C-2 Loan Facility [Member]

Term C-2 Loan Facility [Member]

Amended Credit Agreement [Member]

Subsequent Event [Member]

Subsequent Event [Member]

USD ($)

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

London Interbank Offered Rate (LIBOR) [Member]

European Interbank Offered Rate (EURIBOR) [Member]

USD ($)

London Interbank Offered Rate (LIBOR) [Member]

USD ($)

EUR (€)

USD ($)

European Interbank Offered Rate (EURIBOR) [Member]

USD ($)

Senior Unsecured Notes Due 2018 [Member]

Senior Unsecured Notes Due 2018 [Member]

USD ($)

USD ($)

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior notes

'

'

'

'

'

'

'

€ 300,000,000

$500,000,000

'

'

$400,000,000

'

'

$600,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate, stated percentage

'

'

'

'

3.25%

3.25%

3.25%

'

4.63%

4.63%

4.63%

5.88%

5.88%

5.88%

6.63%

6.63%

6.63%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Repurchase Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Oct-14

'

Secured Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

914,000,000

914,000,000

0

'

'

'

'

'

35,000,000

28,000,000

978,000,000

'

'

'

'

Debt Instrument, Redemption Price, Percentage

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Refinancing expense

4,000,000

1,000,000

4,000,000

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

Deferred Finance Costs, Gross

'

'

'

'

6,000,000

6,000,000

'

'

'

'

'

'

'

'

'

'

'

4,000,000

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

103.31%

'

Debt Instrument, Repurchase Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

620,000,000

Interest paid for called senior notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

'

Date of maturity

'

'

'

'

15-Oct-19

15-Oct-19

15-Oct-19

'

15-Nov-22

15-Nov-22

15-Nov-22

15-Jun-21

15-Jun-21

15-Jun-21

15-Oct-18

15-Oct-18

15-Oct-18

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

900,000,000

'

'

'

'

'

'

'

'

'

Cross default covenant to other debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$50,000,000

'

'

Credit facility, expiration date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Oct-18

15-Oct-18

15-Oct-18

'

'

'

'

15-Oct-16

15-Oct-16

15-Oct-16

15-Oct-16

'

'

'

'

Estimated margin

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.25%

2.25%

'

1.50%

'

'

'

'

2.00%

'

'

'

Amortization rate of initial principal amount per annum payable quarterly

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

Line of credit facility, unused capacity, commitment fee percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

Debt_Schedule_of_First_Lien_Se

Debt (Schedule of First Lien Senior Secured Leverage Ratios) (Details) (Revolving Credit Facility [Member])	Sep. 30, 2014
Ratio Maximum [Member]	'
Debt Instrument [Line Items]	'
First lien secured leverage ratio	3.9
Ratio Estimate [Member]	'
Debt Instrument [Line Items]	'
First lien secured leverage ratio	0.67
Ratio Estimate If Fully Drawn [Member]	'
Debt Instrument [Line Items]	'
First lien secured leverage ratio	1.27

Debt_Accounts_Receivable_Secur

Debt (Accounts Receivable Securitization Facility Narrative) (Details) (USD $)	1 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Aug. 31, 2013	Sep. 30, 2014
Debt Instrument [Line Items]	'	'
Outstanding amount of accounts receivable transferred by the Originators to the Transferror	'	$239
Accounts Receivable Securitization Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Maximum borrowing capacity	135	'
Current borrowing capacity	'	135
Credit facility, expiration date	28-Aug-16	'
Line of credit facility, prepayment	'	$15

Debt_Schedule_of_Balances_Avai

Debt (Schedule of Balances Available for Borrowings)(Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Revolving Credit Facility [Member]	'		'
Debt Instrument [Line Items]	'		'
Borrowings outstanding	$0		'
Letters of credit issued	0		'
Available for borrowing	900		'
Accounts Receivable Securitization Facility [Member]	'		'
Debt Instrument [Line Items]	'		'
Borrowings outstanding	35	[1]	50	[1]
Letters of credit issued	79		'
Available for borrowing	$21		'
[1]	The weighted average interest rate was 0.7% as of SeptemberB 30, 2014 and DecemberB 31, 2013.

Benefit_Obligations_Schedule_o

Benefit Obligations (Schedule of Net Periodic Benefit Costs Recognized) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Benefits [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost	$3	$9	$9	$26
Interest cost	41	39	126	116
Expected return on plan assets	-54	-57	-162	-169
Amortization of prior service cost (credit), net	0	0	0	1
Total	-10	-9	-27	-26
Postretirement Benefits [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost	0	0	1	2
Interest cost	1	3	3	8
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit), net	-21	0	-62	0
Total	($20)	$3	($58)	$10

Benefit_Obligations_Schedule_o1

Benefit Obligations (Schedule of Company Commitments to Fund Benefit Obligations) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Cash Contributions to Defined Benefit Pension Plans [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Total contributions year-to-date	$24
Total expected contributions in current fiscal year	47
Other Pension Plan [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Total contributions year-to-date	17
Total expected contributions in current fiscal year	22
Benefit Payments to Other Postretirement Benefit Plans [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Total contributions year-to-date	42
Total expected contributions in current fiscal year	$54

Benefit_Obligations_Narrative_

Benefit Obligations (Narrative) (Details) (USD $)	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Mar. 27, 2014
		Postretirement Benefits [Member]	Postretirement Benefits [Member]	Postretirement Benefits [Member]	Postretirement Benefits [Member]	Postretirement Benefits [Member]	Postretirement Benefits [Member]	Postretirement Benefits [Member]	Narrows Union Employees [Member]
						UNITED STATES	UNITED STATES	UNITED STATES	Postretirement Benefits [Member]
									UNITED STATES
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'	'	'	'
Prior service cost credit	'	'	'	'	'	'	'	$92	$5
Amortization of prior service cost (credit), net	'	-21	0	-62	0	21	62	'	'
Lump-sum buyout payments	'	'	'	'	'	1	32	'	'
Contributions to multiemployer defined benefit plan	$5	'	'	'	'	'	'	'	'

Environmental_Schedule_of_Envi

Environmental (Schedule of Environmental Remediation Reserves) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Environmental Remediation Obligations [Abstract]	'	'
Demerger obligations (Note 17)	$27	$27
Divestiture obligations (Note 17)	22	21
Active sites	27	32
US Superfund sites	12	13
Other environmental remediation reserves	3	4
Total	$91	$97

Environmental_US_Superfund_Sit

Environmental (US Superfund Sites Narrative) (Details) (Passaic River, New Jersey [Member], USD $)	0 Months Ended	9 Months Ended
	Apr. 11, 2014	Sep. 30, 2014
Passaic River, New Jersey [Member]	'	'
Site Contingency [Line Items]	'	'
Number of parties included in USEPA order	'	70
EPA proposed remedial alternative, low estimate	$365,000,000	'
EPA proposed remedial alternative, high estimate	3,200,000,000	'
EPA preferred remedial alternative	$1,700,000,000	'

Environmental_Environmental_Pr

Environmental (Environmental Proceedings Narrative) (Details) (Meredosia, Illinios [Member], USD $)	1 Months Ended
	Sep. 30, 2014
Meredosia, Illinios [Member]	'
Site Contingency [Line Items]	'
EPA settlement agreement	$380,000
Supplemental Environmental Funding	$175,000

Stockholders_Equity_Schedule_o

Stockholders' Equity (Schedule of Dividend Increases) (Details) (USD $)	1 Months Ended
	Apr. 30, 2014	Jul. 31, 2013	Apr. 30, 2013
Schedule of Dividend Increases [Line Items]	'	'	'
Common stock, dividends, rate increase, percent	39.00%	100.00%	20.00%
Quarterly [Member]	'	'	'
Schedule of Dividend Increases [Line Items]	'	'	'
Common stock, dividends, per share, declared	0.25	0.18	0.09
Annual [Member]	'	'	'
Schedule of Dividend Increases [Line Items]	'	'	'
Common stock, dividends, per share, declared	1	0.72	0.36

Stockholders_Equity_Schedule_o1

Stockholders' Equity (Schedule of Treasury Stock) (Details) (USD $)	9 Months Ended			80 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2014		Feb. 06, 2014	Oct. 18, 2012	Apr. 25, 2011	Oct. 23, 2008	Feb. 08, 2008
Class of Stock [Line Items]	'	'		'		'	'	'	'	'
Share repurchase plan, authorized repurchase amount	$1,065	'		$1,065		$172	$264	$129	$100	$400
Shares repurchased	3,515,301	2,096,320	[1]	19,844,008	[2]	'	'	'	'	'
Average purchase price per share	$57.19	$48.58		$43.64		'	'	'	'	'
Amount spent on repurchased shares (in millions)	$201	$102		$866		'	'	'	'	'
Restricted Stock [Member]	'	'		'		'	'	'	'	'
Class of Stock [Line Items]	'	'		'		'	'	'	'	'
Shares withheld, tax withholding	'	6,021		11,844		'	'	'	'	'
[1]	Excludes 6,021 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.
[2]	Excludes 11,844 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.

Stockholders_Equity_Schedule_o2

Stockholders' Equity (Schedule of Components of Other Comprehensive Income (Loss), Net) (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013
Stockholders' Equity Note [Abstract]	'	'		'	'
Unrealized gain (loss) on marketable securities, gross amount	$0	$1	[1]	$0	$1	[2]
Unrealized gain (loss) on marketable securities, income tax (provision) benefit	0	0		0	0
Unrealized gain (loss) on marketable securities, net amount	0	1		0	1
Foreign currency translation, gross amount	-127	44		-142	41
Foreign currency translation, income tax (provision) benefit	3	-2		1	-4
Foreign currency translation, net amount	-124	42		-141	37
Gain (loss) from cash flow hedges, gross amount	-8	2	[3]	-11	7
Gain (loss) from cash flow hedges, income tax (provision) benefit	3	-1		0	-3
Gain (loss) from cash flow hedges, net amount	-5	1		-11	4
Pension and postretirement benefits, gross amount	-16	0		-57	0	[4]
Pension and postretirement benefits, income tax (provision) benefit	8	0		23	0
Pension and postretirement benefits, net amount	-8	0		-34	0
Total other comprehensive income (loss), gross amount	-151	47		-210	49
Total other comprehensive income (loss), income tax (provision) benefit	14	-3		24	-7
Total other comprehensive income (loss), net of tax	($137)	$44		($186)	$42
[1]	Amount includes $1 million of unrealized gains related to the Company's equity method investments
[2]	Amount includes $1 million of unrealized gains related to the Company's equity method investments.
[3]	Amount includes $1 million of gains associated with the Company's equity method investment
[4]	Amount includes amortization of actuarial gains of $1 million related to the Company's equity method investments

Stockholders_Equity_Schedule_o3

Stockholders' Equity (Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss), Net) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
As of December 31, 2013	'	'	($4)	'
Other comprehensive income before reclassifications	'	'	-156	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	-54	'
Income tax (provision) benefit	14	-3	24	-7
As of September 30, 2014	-190	'	-190	'
Other Comprehensive Income (Loss), Net of Tax Portion Attributable To Equity Method Investee	'	1	'	1
Unrealized Gain (Loss) on Marketable Securities [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
As of December 31, 2013	'	'	0	'
Other comprehensive income before reclassifications	'	'	0	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	0	'
Income tax (provision) benefit	'	'	0	'
As of September 30, 2014	0	'	0	'
Foreign Currency Translation [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
As of December 31, 2013	'	'	-3	'
Other comprehensive income before reclassifications	'	'	-142	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	0	'
Income tax (provision) benefit	'	'	1	'
As of September 30, 2014	-144	'	-144	'
Gain (Loss) from Cash Flow Hedges [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
As of December 31, 2013	'	'	-44	'
Other comprehensive income before reclassifications	'	'	-14	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	3	'
Income tax (provision) benefit	'	'	0	'
As of September 30, 2014	-55	'	-55	'
Pension and Postretirement Benefits [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
As of December 31, 2013	'	'	43	'
Other comprehensive income before reclassifications	'	'	0	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	-57	'
Income tax (provision) benefit	'	'	23	'
As of September 30, 2014	$9	'	$9	'

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	Sep. 30, 2014
Class of Stock [Line Items]	'
Common stock, par value	$0.00

Other_Charges_Gains_Net_Schedu

Other (Charges) Gains, Net (Schedule of Other (Charges) Gains, Net) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring and Related Activities [Abstract]	'	'	'	'
Employee termination benefits	($3)	$0	($6)	($3)
Kelsterbach plant relocation	0	-2	0	-6
Asset impairments	0	-2	0	-2
Plant/office closures	1	0	2	0
Commercial disputes	21	0	21	0
Other	1	0	4	0
Total	$20	($4)	$21	($11)

Other_Charges_Gains_Net_Schedu1

Other (Charges) Gains, Net (Schedule of Restructuring Reserves) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]	'
As of September 30, 2014	$29
Total	29
Employee Termination Benefits [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	29
Additions	6
Cash payments	-18
Other changes	0
Exchange rate changes	0
As of September 30, 2014	17
Total	17
Plant/Office Closures [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	33
Additions	0
Cash payments	-7
Other changes	-12
Exchange rate changes	-2
As of September 30, 2014	12
Total	12
Advanced Engineered Materials [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of September 30, 2014	4
Total	4
Advanced Engineered Materials [Member] | Employee Termination Benefits [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	4
Additions	1
Cash payments	-1
Other changes	'
Exchange rate changes	0
As of September 30, 2014	4
Total	4
Advanced Engineered Materials [Member] | Plant/Office Closures [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	0
Additions	0
Cash payments	0
Other changes	0
Exchange rate changes	0
As of September 30, 2014	0
Total	0
Consumer Specialties [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of September 30, 2014	2
Total	2
Consumer Specialties [Member] | Employee Termination Benefits [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	3
Additions	0
Cash payments	-1
Other changes	0
Exchange rate changes	0
As of September 30, 2014	2
Total	2
Consumer Specialties [Member] | Plant/Office Closures [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	0
Additions	0
Cash payments	0
Other changes	0
Exchange rate changes	0
As of September 30, 2014	0
Total	0
Industrial Specialties [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of September 30, 2014	1
Total	1
Industrial Specialties [Member] | Employee Termination Benefits [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	2
Additions	1
Cash payments	-2
Other changes	0
Exchange rate changes	0
As of September 30, 2014	1
Total	1
Industrial Specialties [Member] | Plant/Office Closures [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	0
Additions	0
Cash payments	0
Other changes	0
Exchange rate changes	0
As of September 30, 2014	0
Total	0
Acetyl Intermediates [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of September 30, 2014	19
Total	19
Acetyl Intermediates [Member] | Contract Termination [Member]	'
Restructuring Cost and Reserve [Line Items]	'
Other changes	-10
Acetyl Intermediates [Member] | Employee Termination Benefits [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	16
Additions	4
Cash payments	-13
Other changes	0
Exchange rate changes	0
As of September 30, 2014	7
Total	7
Acetyl Intermediates [Member] | Plant/Office Closures [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	33
Additions	0
Cash payments	-7
Other changes	-12	[1]
Exchange rate changes	-2
As of September 30, 2014	12
Total	12
Other [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of September 30, 2014	3
Total	3
Other [Member] | Employee Termination Benefits [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	4
Additions	0
Cash payments	-1
Other changes	0
Exchange rate changes	0
As of September 30, 2014	3
Total	3
Other [Member] | Plant/Office Closures [Member]	'
Restructuring Cost and Reserve [Line Items]	'
As of December 31, 2013	0
Additions	0
Cash payments	0
Other changes	0
Exchange rate changes	0
As of September 30, 2014	0
Total	$0
[1]	Includes a $10 million non-cash reduction to take-or-pay contract termination penalties resulting from the closure of the Company's VAM facility in Tarragona, Spain (Note 3).

Other_Charges_Gains_Net_Narrat

Other (Charges) Gains, Net (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other (Charges) Gains, Net [Line Items]	'	'	'	'
Commercial disputes	$21	$0	$21	$0
ARO adjustment	1	0	4	0
Employee termination benefits	-3	0	-6	-3
Kelsterbach plant relocation	0	-2	0	-6
Consumer Specialties [Member]	'	'	'	'
Other (Charges) Gains, Net [Line Items]	'	'	'	'
Commercial disputes	15	'	'	'
Acetyl Intermediates [Member]	'	'	'	'
Other (Charges) Gains, Net [Line Items]	'	'	'	'
Commercial disputes	6	'	'	'
Acetyl Intermediates and Industrial Specialties [Member] | Business Optimization [Member]	'	'	'	'
Other (Charges) Gains, Net [Line Items]	'	'	'	'
Employee termination benefits	'	'	'	-3
Roussillon, France and Tarragona, Spain [Member] | Acetyl Intermediates [Member]	'	'	'	'
Other (Charges) Gains, Net [Line Items]	'	'	'	'
ARO adjustment	'	'	3	'
Employee termination benefits	'	'	-4	'
Kelsterbach, Germany [Member] | Advanced Engineered Materials [Member]	'	'	'	'
Other (Charges) Gains, Net [Line Items]	'	'	'	'
Kelsterbach plant relocation	'	'	'	($6)

Income_Taxes_Schedule_of_Effec

Income Taxes (Schedule of Effective Tax Rate) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Effective income tax rate	26.00%	25.00%	27.00%	32.00%

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Unrecognized Tax Benefits, Period Increase (Decrease)	($55)
Decrease in uncertain tax positions	42
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	$16

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Schedule of Interest Rate Swap Derivatives) (Details) (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Swap Derivative 1 Point 71 Percent Maturing January 2, 2014 [Member]	'		'
Derivative [Line Items]	'		'
Effective Date	'		2-Jan-12
Expiration Date	'		2-Jan-14
Fixed Rate	'		1.71%	[1]
Notional Value	'		$1,100
Swap Derivative 1 Point 02 Percent Maturing January 2, 2016 [Member]	'		'
Derivative [Line Items]	'		'
Effective Date	2-Jan-14		2-Jan-14
Expiration Date	2-Jan-16		2-Jan-16
Fixed Rate	1.02%	[1]	1.02%	[1]
Notional Value	$500		$500
[1]	Fixes the LIBOR portion of the Company's US-dollar denominated variable rate borrowings (Note 9).

Derivative_Financial_Instrumen3

Derivative Financial Instruments Derivative Financial Instruments (Schedule of Cross Currency Swap Derivatives) (Details)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2014		Sep. 30, 2014		Sep. 30, 2014
	Swap Derivative 4 Point 27 Percent Maturing September 11, 2020 [Member]		Swap Derivative 2 Point 63 Percent Maturing September 11, 2020 [Member]		Swap Derivative 3 Point 62 Percent Maturing April 17, 2019 [Member]		Swap Derivative 2 Point 77 Percent Maturing April 17, 2019 [Member]
	USD ($)		EUR (€)		USD ($)		EUR (€)
Derivative [Line Items]	'		'		'		'
Notional Value	$250	[1]	€ 193	[2]	$225	[1]	€ 162	[2]
Effective Date	11-Sep-14		11-Sep-14		17-Apr-14		17-Apr-14
Expiration Date	11-Sep-20		11-Sep-20		17-Apr-19		17-Apr-19
Fixed Rate	4.27%		2.63%		3.62%		2.77%
[1]	Represents the notional amount due from the counterparty at the maturity of the contract.
[2]	Represents the notional amount due to the counterparty at the maturity of the contract.

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Schedule of Notional Amounts of Foreign Currency Derivatives) (Details) (Foreign Exchange Contract [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Foreign Exchange Contract [Member]	'	'
Derivative [Line Items]	'	'
Notional Value	$608	$869

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Schedule of Changes in Fair Value of Derivatives) (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Derivative [Line Items]	'		'		'		'
Tax expense recognized in Other comprehensive income (loss)	($14)		$3		($24)		$7
Designated as Hedging Instrument [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	-9		-2		-14		-1
Gain (Loss) Recognized in Earnings (Loss)	24		-3		25		-8
Equity Method Investments' Derivative [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	'		1		'		'
Gain (Loss) Recognized in Earnings (Loss)	'		1		'		1
Interest Rate Swap [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Tax expense recognized in Other comprehensive income (loss)	'		1		4		3
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	0		-2	[1]	-1	[2]	-1	[3]
Cross Currency Interest Rate Contract [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Tax expense recognized in Other comprehensive income (loss)	3		'		4		'
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	-9	[4]	0		-13	[5]	0
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	0		0		0		0
Interest Expense [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Earnings (Loss)	-1	[6]	-3	[6]	-3	[6]	-8	[6]
Other Income [Member] | Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Earnings (Loss)	25	[7]	0		28	[7]	0
Foreign Currency Gain (Loss) [Member] | Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Earnings (Loss)	-4	[8]	-10	[8]	-9	[8]	-14	[8]
Net Investment Hedging [Member]	'		'		'		'
Derivative [Line Items]	'		'		'		'
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	9		0		9		0
Gain (Loss) Recognized in Earnings (Loss)	$0		$0		$0		$0
[1]	Excludes $1 million of gains associated with the Company's equity method investments' derivative activity and $1B million of tax expense recognized in Other comprehensive income (loss).
[2]	Excludes $4 million of tax expense recognized in Other comprehensive income (loss).
[3]	Excludes $3 million of tax expense recognized in Other comprehensive income (loss).
[4]	Excludes $3 million of tax benefit recognized in Other comprehensive income (loss).
[5]	Excludes $4 million of tax benefit recognized in Other comprehensive income (loss).
[6]	Reclassified from Accumulated other comprehensive income (loss), net to Interest income (expense) in the unaudited interim consolidated statements of operations.
[7]	Included in Other income (expense), net for non-operating activity or Interest income (expense) for coupon interest in the unaudited interim consolidated statements of operations.
[8]	Included in Foreign exchange gain (loss), net for operating activity or Other income (expense), net for non-operating activity in the unaudited interim consolidated statements of operations.

Derivative_Financial_Instrumen6

Derivative Financial Instruments (Schedule of Offsetting Assets) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivative Assets [Abstract]	'	'
Gross amount recognized	$33	$1
Gross amount offset in the consolidated balance sheets	0	0
Net amount presented in the consolidated balance sheets	33	1
Gross amount not offset in the consolidated balance sheets	5	1
Net amount	$28	$0

Derivative_Financial_Instrumen7

Derivative Financial Instruments (Schedule of Offsetting Liabilities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivative Liabilities [Abstract]	'	'
Gross amount recognized	$24	$16
Gross amount offset in the consolidated balance sheets	0	1
Net amount presented in the consolidated balance sheets	24	15
Gross amount not offset in the consolidated balance sheets	5	1
Net amount	$19	$14

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Measurements, Recurring [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total assets	$69		$42
Total liabilities	-24		-15
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total assets	36		41
Total liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total assets	33		1
Total liabilities	-24		-15
Marketable securities, at fair value [Member] | Fair Value, Measurements, Recurring [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Mutual funds	36		41
Marketable securities, at fair value [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Mutual funds	36		41
Marketable securities, at fair value [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Mutual funds	0		0
Noncurrent Other assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cross-currency swaps	27		'
Noncurrent Other assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cross-currency swaps	0		'
Noncurrent Other assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cross-currency swaps	27		'
Current Other Assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cross-currency swaps	2		'
Current Other Assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cross-currency swaps	0		'
Current Other Assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cross-currency swaps	2		'
Current Other Assets [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency forwards and swaps	4		1
Current Other Assets [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency forwards and swaps	0		0
Current Other Assets [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency forwards and swaps	4		1
Noncurrent Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Interest rate swaps	-1		-3
Cross-currency swaps	-12		'
Noncurrent Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Interest rate swaps	0		0
Cross-currency swaps	0		'
Noncurrent Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Interest rate swaps	-1		-3
Cross-currency swaps	-12		'
Current Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Interest rate swaps	-4		-5
Cross-currency swaps	-2		'
Current Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Interest rate swaps	0		0
Cross-currency swaps	0		'
Current Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Interest rate swaps	-4		-5
Cross-currency swaps	-2		'
Current Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency forwards and swaps	-5		-5
Interest rate swaps	'		-2
Current Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency forwards and swaps	0		0
Interest rate swaps	'		0
Current Other liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency forwards and swaps	-5		-5
Interest rate swaps	'		-2
Net Investment Hedging [Member] | Long-term Debt [Member] | Fair Value, Measurements, Recurring [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
3.250% Notes	0	[1]	'
Net Investment Hedging [Member] | Long-term Debt [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
3.250% Notes	0	[1]	'
Net Investment Hedging [Member] | Long-term Debt [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
3.250% Notes	$0	[1]	'
Senior Unsecured Notes Due 2019 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Interest rate, stated percentage	3.25%		3.25%
[1]	Included in the unaudited consolidated balance sheets at carrying amount.

Fair_Value_Measurements_Schedu1

Fair Value Measurements (Schedule of Carrying Values and Fair Values of Financial Instruments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cost investments, carrying amount	$145	$145
Cost investments, fair value	0	0
Insurance contracts in nonqualified trusts, carrying amount	57	62
Insurance contracts in nonqualified trusts, fair value	57	62
Long-term debt, including current installments of long-term debt, carrying amount	3,264	2,911
Long-term debt, including current installments of long-term debt, fair value	3,296	2,960
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cost investments, fair value	0	0
Insurance contracts in nonqualified trusts, fair value	57	62
Long-term debt, including current installments of long-term debt, fair value	3,028	2,696
Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cost investments, fair value	0	0
Insurance contracts in nonqualified trusts, fair value	0	0
Long-term debt, including current installments of long-term debt, fair value	$268	$264

Commitments_and_Contingencies_

Commitments and Contingencies (Commercial Actions Narrative) (Details) (Commercial Actions [Member], USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Commercial Actions [Member]	'	'
Loss Contingencies [Line Items]	'	'
Damages sought, amount	$68	$38

Commitments_and_Contingencies_1

Commitments and Contingencies (Guarantees - Demerger and Divesture Obligations Narrative) (Details)	179 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
	Indemnification Agreements Hoechst [Member]	Indemnification Agreements Hoechst [Member]	Divestiture Agreements [Member]
	USD ($)	EUR (€)	USD ($)
Loss Contingencies [Line Items]	'	'	'
Number of divestiture agreements	'	19	'
Indemnification floor amount	'	€ 250	'
Indemnification ceiling amount	'	750	'
Indemnification percentage exceeding ceiling amount	'	33.33%	'
Loss contingency accrual, carrying value, payments	67	'	'
Indemnification percentage, other	'	33.33%	'
Term of divestiture obligations	'	'	'2037
Guarantor obligations, maximum exposure	'	'	$132

Commitments_and_Contingencies_2

Commitments and Contingencies Commitments and Contingencies (Purchase Obligations Narrative) (Details) (USD $)	9 Months Ended
In Billions, unless otherwise specified	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Unrecorded unconditional purchase obligations	$3.40
Term of unrecorded unconditional purchase obligations	'2036

Segment_Information_Schedule_o

Segment Information (Schedule of Business Segments) (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	$1,769		$1,636		$5,243		$4,894		'
Other (charges) gains, net	20		-4		21		-11		'
Operating profit (loss)	310		211		812		564		'
Equity in net earnings (loss) of affiliates	52		41		193		150		'
Depreciation and amortization	73		76		220		227		'
Capital expenditures	203	[1]	102	[2]	452	[3]	252	[4]	'
Goodwill and intangibles, net	887		'		887		'		940
Total assets	9,710		'		9,710		'		9,018
Increase (decrease) in accrued capital expenditures	12		-8		-12		-7		'
Operating Segments [Member] | Advanced Engineered Materials [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	366		346		1,128		1,027		'
Other (charges) gains, net	0		-2		-1		-6		'
Operating profit (loss)	51		48		164		123		'
Equity in net earnings (loss) of affiliates	43		30		121		115		'
Depreciation and amortization	27		27		80		83		'
Capital expenditures	23		14		43		35		'
Goodwill and intangibles, net	350		'		350		'		368
Total assets	2,544		'		2,544		'		2,643
Operating Segments [Member] | Consumer Specialties [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	291	[5]	310	[5]	882	[6]	919	[6]	'
Other (charges) gains, net	16		0		16		0		'
Operating profit (loss)	105		85		284		246		'
Equity in net earnings (loss) of affiliates	0		0		8		3		'
Depreciation and amortization	11		10		32		30		'
Capital expenditures	22		33		72		76		'
Goodwill and intangibles, net	266		'		266		'		278
Total assets	1,498		'		1,498		'		1,478
Operating Segments [Member] | Industrial Specialties [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	314		299		959		882		'
Other (charges) gains, net	-1		-1		-1		-3		'
Operating profit (loss)	16		24		60		57		'
Equity in net earnings (loss) of affiliates	0		0		0		0		'
Depreciation and amortization	12		13		38		37		'
Capital expenditures	7		8		17		19		'
Goodwill and intangibles, net	54		'		54		'		60
Total assets	951		'		951		'		1,002
Operating Segments [Member] | Acetyl Intermediates [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	937	[5]	795	[5]	2,679	[6]	2,412	[6]	'
Other (charges) gains, net	5		-1		7		-2		'
Operating profit (loss)	174		67		413		197		'
Equity in net earnings (loss) of affiliates	2		3		17		7		'
Depreciation and amortization	21		22		61		65		'
Capital expenditures	150		45		316		116		'
Goodwill and intangibles, net	217		'		217		'		234
Total assets	2,488		'		2,488		'		2,333
Corporate, Non-Segment [Member] | Other Activities [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	0		0		0		0		'
Other (charges) gains, net	0		0		0		0		'
Operating profit (loss)	-36		-13		-109		-59		'
Equity in net earnings (loss) of affiliates	7		8		47		25		'
Depreciation and amortization	2		4		9		12		'
Capital expenditures	1		2		4		6		'
Goodwill and intangibles, net	0		'		0		'		0
Total assets	2,229		'		2,229		'		1,562
Eliminations [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	-139		-114		-405		-346		'
Other (charges) gains, net	0		0		0		0		'
Operating profit (loss)	0		0		0		0		'
Equity in net earnings (loss) of affiliates	0		0		0		0		'
Depreciation and amortization	0		0		0		0		'
Capital expenditures	0		0		0		0		'
Goodwill and intangibles, net	0		'		0		'		0
Total assets	0		'		0		'		0
Eliminations [Member] | Consumer Specialties [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	2		0		2		4		'
Eliminations [Member] | Acetyl Intermediates [Member]	'		'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'		'
Net sales	$137		$114		$403		$342		'
[1]	Includes an increase in accrued capital expenditures of $12B million for the three months ended SeptemberB 30, 2014.
[2]	Excludes expenditures related to the relocation of the Company's POM operations in Germany and includes a decrease in accrued capital expenditures of $8 million for the three months ended SeptemberB 30, 2013.
[3]	Includes a decrease in accrued capital expenditures of $12B million for the nine months ended SeptemberB 30, 2014.
[4]	Excludes expenditures related to the relocation of the Company's POM operations in GermanyB and includes a decrease in accrued capital expenditures of $7 million for the nine months ended SeptemberB 30, 2013.
[5]	Net sales for Acetyl Intermediates and Consumer Specialties include intersegment sales of $137 million and $2 million, respectively, for the three months ended SeptemberB 30, 2014 and $114 million and $0 million, respectively, for the three months ended SeptemberB 30, 2013.
[6]	Net sales for Acetyl Intermediates and Consumer Specialties include intersegment sales of $403 million and $2 million, respectively, for the nine months ended SeptemberB 30, 2014 and $342 million and $4 million, respectively, for the nine months ended SeptemberB 30, 2013.

Earnings_Loss_Per_Share_Schedu

Earnings (Loss) Per Share (Schedule of Earnings (Loss) Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Amounts attributable to Celanese Corporation	'	'	'	'
Earnings (loss) from continuing operations	$258	$171	$713	$445
Earnings (loss) from discontinued operations	-5	1	-5	2
Net earnings (loss)	$253	$172	$708	$447
Weighted average shares - basic	154,427,554	158,501,075	155,552,777	159,282,314
Dilutive stock options	125,259	230,110	150,099	229,920
Dilutive restricted stock units	621,715	364,346	622,635	334,359
Weighted average shares - diluted	155,174,528	159,095,531	156,325,511	159,846,593

Earnings_Loss_Per_Share_Schedu1

Earnings (Loss) Per Share (Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Securities excluded from computation of diluted earnings per share, amount	0	38,140	0	94,631
Stock Options [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Securities excluded from computation of diluted earnings per share, amount	0	38,140	0	94,631
Restricted Stock Units (RSUs) [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Securities excluded from computation of diluted earnings per share, amount	0	0	0	0

Consolidating_Guarantor_Financ2

Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Operations) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net sales	$1,769	$1,636	$5,243	$4,894
Cost of sales	-1,333	-1,290	-4,021	-3,896
Gross profit	436	346	1,222	998
Selling, general and administrative expenses	-118	-97	-341	-316
Amortization of intangible assets	-5	-6	-16	-26
Research and development expenses	-22	-24	-68	-73
Other (charges) gains, net	20	-4	21	-11
Foreign exchange gain (loss), net	1	-2	-1	-5
Gain (loss) on disposition of businesses and assets, net	-2	-2	-5	-3
Operating profit (loss)	310	211	812	564
Equity in net earnings (loss) of affiliates	52	41	193	150
Interest expense	-41	-43	-120	-130
Refinancing expense	-4	-1	-4	-1
Interest income	3	0	5	1
Dividend income - cost investments	29	22	87	69
Other income (expense), net	-2	-2	-1	1
Earnings (loss) from continuing operations before tax	347	228	972	654
Income tax (provision) benefit	-90	-57	-262	-209
Earnings (loss) from continuing operations	257	171	710	445
Earnings (loss) from operation of discontinued operations	-7	1	-8	3
Gain (loss) on disposition of discontinued operations	0	0	0	0
Income tax (provision) benefit from discontinued operations	2	0	3	-1
Earnings (loss) from discontinued operations	-5	1	-5	2
Net earnings (loss)	252	172	705	447
Net (earnings) loss attributable to noncontrolling interests	1	0	3	0
Net earnings (loss) attributable to Celanese Corporation	253	172	708	447
Parent Guarantor [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Amortization of intangible assets	0	0	0	0
Research and development expenses	0	0	0	0
Other (charges) gains, net	0	0	0	0
Foreign exchange gain (loss), net	0	0	0	0
Gain (loss) on disposition of businesses and assets, net	0	0	0	0
Operating profit (loss)	0	0	0	0
Equity in net earnings (loss) of affiliates	252	172	706	443
Interest expense	0	0	0	0
Refinancing expense	0	0	0	0
Interest income	0	0	0	0
Dividend income - cost investments	0	0	0	0
Other income (expense), net	0	0	0	0
Earnings (loss) from continuing operations before tax	252	172	706	443
Income tax (provision) benefit	1	0	2	4
Earnings (loss) from continuing operations	253	172	708	447
Earnings (loss) from operation of discontinued operations	0	0	0	0
Gain (loss) on disposition of discontinued operations	0	0	0	0
Income tax (provision) benefit from discontinued operations	0	0	0	0
Earnings (loss) from discontinued operations	0	0	0	0
Net earnings (loss)	253	172	708	447
Net (earnings) loss attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Celanese Corporation	253	172	708	447
Issuer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Amortization of intangible assets	0	0	0	0
Research and development expenses	0	0	0	0
Other (charges) gains, net	0	0	0	0
Foreign exchange gain (loss), net	0	0	0	0
Gain (loss) on disposition of businesses and assets, net	0	0	0	0
Operating profit (loss)	0	0	0	0
Equity in net earnings (loss) of affiliates	291	200	801	528
Interest expense	-52	-48	-147	-144
Refinancing expense	-4	-1	-4	-1
Interest income	18	14	49	41
Dividend income - cost investments	0	0	0	0
Other income (expense), net	0	0	0	0
Earnings (loss) from continuing operations before tax	253	165	699	424
Income tax (provision) benefit	-1	7	7	19
Earnings (loss) from continuing operations	252	172	706	443
Earnings (loss) from operation of discontinued operations	0	0	0	0
Gain (loss) on disposition of discontinued operations	0	0	0	0
Income tax (provision) benefit from discontinued operations	0	0	0	0
Earnings (loss) from discontinued operations	0	0	0	0
Net earnings (loss)	252	172	706	443
Net (earnings) loss attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Celanese Corporation	252	172	706	443
Subsidiary Guarantors [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net sales	749	709	2,135	2,121
Cost of sales	-492	-477	-1,454	-1,455
Gross profit	257	232	681	666
Selling, general and administrative expenses	-18	-18	-45	-65
Amortization of intangible assets	-1	-2	-5	-9
Research and development expenses	-12	-17	-38	-48
Other (charges) gains, net	21	-1	21	3
Foreign exchange gain (loss), net	0	0	0	0
Gain (loss) on disposition of businesses and assets, net	-3	0	-8	0
Operating profit (loss)	244	194	606	547
Equity in net earnings (loss) of affiliates	49	35	127	117
Interest expense	-6	-8	-18	-27
Refinancing expense	0	0	0	0
Interest income	18	17	53	48
Dividend income - cost investments	0	0	0	0
Other income (expense), net	0	0	4	0
Earnings (loss) from continuing operations before tax	305	238	772	685
Income tax (provision) benefit	-82	-63	-204	-176
Earnings (loss) from continuing operations	223	175	568	509
Earnings (loss) from operation of discontinued operations	-7	1	-8	3
Gain (loss) on disposition of discontinued operations	0	0	0	0
Income tax (provision) benefit from discontinued operations	2	0	3	-1
Earnings (loss) from discontinued operations	-5	1	-5	2
Net earnings (loss)	218	176	563	511
Net (earnings) loss attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Celanese Corporation	218	176	563	511
Non-Guarantors [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net sales	1,340	1,250	3,997	3,699
Cost of sales	-1,133	-1,136	-3,433	-3,369
Gross profit	207	114	564	330
Selling, general and administrative expenses	-100	-79	-296	-251
Amortization of intangible assets	-4	-4	-11	-17
Research and development expenses	-10	-7	-30	-25
Other (charges) gains, net	-1	-3	0	-10
Foreign exchange gain (loss), net	1	-2	-1	-5
Gain (loss) on disposition of businesses and assets, net	1	-2	3	-3
Operating profit (loss)	94	17	229	19
Equity in net earnings (loss) of affiliates	40	30	165	124
Interest expense	-20	-19	-60	-51
Refinancing expense	0	0	0	0
Interest income	4	1	8	4
Dividend income - cost investments	29	22	87	69
Other income (expense), net	-2	-2	-5	1
Earnings (loss) from continuing operations before tax	145	49	424	166
Income tax (provision) benefit	-16	-1	-73	-56
Earnings (loss) from continuing operations	129	48	351	110
Earnings (loss) from operation of discontinued operations	0	0	0	0
Gain (loss) on disposition of discontinued operations	0	0	0	0
Income tax (provision) benefit from discontinued operations	0	0	0	0
Earnings (loss) from discontinued operations	0	0	0	0
Net earnings (loss)	129	48	351	110
Net (earnings) loss attributable to noncontrolling interests	1	0	3	0
Net earnings (loss) attributable to Celanese Corporation	130	48	354	110
Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net sales	-320	-323	-889	-926
Cost of sales	292	323	866	928
Gross profit	-28	0	-23	2
Selling, general and administrative expenses	0	0	0	0
Amortization of intangible assets	0	0	0	0
Research and development expenses	0	0	0	0
Other (charges) gains, net	0	0	0	-4
Foreign exchange gain (loss), net	0	0	0	0
Gain (loss) on disposition of businesses and assets, net	0	0	0	0
Operating profit (loss)	-28	0	-23	-2
Equity in net earnings (loss) of affiliates	-580	-396	-1,606	-1,062
Interest expense	37	32	105	92
Refinancing expense	0	0	0	0
Interest income	-37	-32	-105	-92
Dividend income - cost investments	0	0	0	0
Other income (expense), net	0	0	0	0
Earnings (loss) from continuing operations before tax	-608	-396	-1,629	-1,064
Income tax (provision) benefit	8	0	6	0
Earnings (loss) from continuing operations	-600	-396	-1,623	-1,064
Earnings (loss) from operation of discontinued operations	0	0	0	0
Gain (loss) on disposition of discontinued operations	0	0	0	0
Income tax (provision) benefit from discontinued operations	0	0	0	0
Earnings (loss) from discontinued operations	0	0	0	0
Net earnings (loss)	-600	-396	-1,623	-1,064
Net (earnings) loss attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Celanese Corporation	($600)	($396)	($1,623)	($1,064)

Consolidating_Guarantor_Financ3

Consolidating Guarantor Financial Information (Schedule of Consolidating Statements of Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net earnings (loss)	$252	$172	$705	$447
Other comprehensive income (loss), net of tax	'	'	'	'
Unrealized gain (loss) on marketable securities	0	1	0	1
Foreign currency translation	-124	42	-141	37
Gain (loss) from cash flow hedges	-5	1	-11	4
Pension and postretirement benefits	-8	0	-34	0
Total other comprehensive income (loss), net of tax	-137	44	-186	42
Total comprehensive income (loss), net of tax	115	216	519	489
Comprehensive (income) loss attributable to noncontrolling interests	1	0	3	0
Comprehensive income (loss) attributable to Celanese Corporation	116	216	522	489
Parent Guarantor [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net earnings (loss)	253	172	708	447
Other comprehensive income (loss), net of tax	'	'	'	'
Unrealized gain (loss) on marketable securities	0	1	0	1
Foreign currency translation	-124	42	-141	37
Gain (loss) from cash flow hedges	-5	1	-11	4
Pension and postretirement benefits	-8	0	-34	0
Total other comprehensive income (loss), net of tax	-137	44	-186	42
Total comprehensive income (loss), net of tax	116	216	522	489
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	116	216	522	489
Issuer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net earnings (loss)	252	172	706	443
Other comprehensive income (loss), net of tax	'	'	'	'
Unrealized gain (loss) on marketable securities	0	1	0	1
Foreign currency translation	-124	42	-141	37
Gain (loss) from cash flow hedges	-5	1	-11	4
Pension and postretirement benefits	-8	0	-34	0
Total other comprehensive income (loss), net of tax	-137	44	-186	42
Total comprehensive income (loss), net of tax	115	216	520	485
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	115	216	520	485
Subsidiary Guarantors [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net earnings (loss)	218	176	563	511
Other comprehensive income (loss), net of tax	'	'	'	'
Unrealized gain (loss) on marketable securities	0	1	0	1
Foreign currency translation	-4	1	3	4
Gain (loss) from cash flow hedges	0	1	0	0
Pension and postretirement benefits	-8	0	-34	0
Total other comprehensive income (loss), net of tax	-12	3	-31	5
Total comprehensive income (loss), net of tax	206	179	532	516
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	206	179	532	516
Non-Guarantors [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net earnings (loss)	129	48	351	110
Other comprehensive income (loss), net of tax	'	'	'	'
Unrealized gain (loss) on marketable securities	0	0	0	0
Foreign currency translation	-16	-4	-30	-2
Gain (loss) from cash flow hedges	-6	0	-9	0
Pension and postretirement benefits	0	0	0	0
Total other comprehensive income (loss), net of tax	-22	-4	-39	-2
Total comprehensive income (loss), net of tax	107	44	312	108
Comprehensive (income) loss attributable to noncontrolling interests	1	0	3	0
Comprehensive income (loss) attributable to Celanese Corporation	108	44	315	108
Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net earnings (loss)	-600	-396	-1,623	-1,064
Other comprehensive income (loss), net of tax	'	'	'	'
Unrealized gain (loss) on marketable securities	0	-2	0	-2
Foreign currency translation	144	-39	168	-39
Gain (loss) from cash flow hedges	11	-2	20	-4
Pension and postretirement benefits	16	0	68	0
Total other comprehensive income (loss), net of tax	171	-43	256	-45
Total comprehensive income (loss), net of tax	-429	-439	-1,367	-1,109
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	($429)	($439)	($1,367)	($1,109)

Consolidating_Guarantor_Financ4

Consolidating Guarantor Financial Information (Schedule of Consolidating Balance Sheet) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current Assets	'	'	'	'
Cash and cash equivalents	$1,510	$984	$1,100	$959
Trade receivables - third party and affiliates	1,016	867	'	'
Non-trade receivables, net	200	343	'	'
Inventories, net	771	804	'	'
Deferred income taxes	111	115	'	'
Marketable securities, at fair value	36	41	'	'
Other assets	43	28	'	'
Total current assets	3,687	3,182	'	'
Investments in affiliates	857	841	'	'
Property, plant and equipment	3,618	3,425	'	'
Deferred income taxes	296	289	'	'
Other assets	365	341	'	'
Goodwill	756	798	'	'
Intangible assets, net	131	142	'	'
Total assets	9,710	9,018	'	'
Current Liabilities	'	'	'	'
Short-term borrowings and current installments of long-term debt - third party and affiliates	765	177	'	'
Trade payables - third party and affiliates	816	799	'	'
Other liabilities	483	541	'	'
Deferred income taxes	10	10	'	'
Income taxes payable	115	18	'	'
Total current liabilities	2,189	1,545	'	'
Noncurrent Liabilities	'	'	'	'
Long-term debt	2,639	2,887	'	'
Deferred income taxes	225	225	'	'
Uncertain tax positions	150	200	'	'
Benefit obligations	1,077	1,175	'	'
Other liabilities	295	287	'	'
Total noncurrent liabilities	4,386	4,774	'	'
Total Celanese Corporation stockholders' equity	2,944	2,699	'	'
Noncontrolling interests	191	0	'	'
Total equity	3,135	2,699	'	'
Total liabilities and equity	9,710	9,018	'	'
Parent Guarantor [Member]	'	'	'	'
Current Assets	'	'	'	'
Cash and cash equivalents	0	0	0	10
Trade receivables - third party and affiliates	0	0	'	'
Non-trade receivables, net	35	33	'	'
Inventories, net	0	0	'	'
Deferred income taxes	0	0	'	'
Marketable securities, at fair value	0	0	'	'
Other assets	0	0	'	'
Total current assets	35	33	'	'
Investments in affiliates	2,910	2,667	'	'
Property, plant and equipment	0	0	'	'
Deferred income taxes	0	0	'	'
Other assets	0	0	'	'
Goodwill	0	0	'	'
Intangible assets, net	0	0	'	'
Total assets	2,945	2,700	'	'
Current Liabilities	'	'	'	'
Short-term borrowings and current installments of long-term debt - third party and affiliates	0	0	'	'
Trade payables - third party and affiliates	0	0	'	'
Other liabilities	1	1	'	'
Deferred income taxes	0	0	'	'
Income taxes payable	0	0	'	'
Total current liabilities	1	1	'	'
Noncurrent Liabilities	'	'	'	'
Long-term debt	0	0	'	'
Deferred income taxes	0	0	'	'
Uncertain tax positions	0	0	'	'
Benefit obligations	0	0	'	'
Other liabilities	0	0	'	'
Total noncurrent liabilities	0	0	'	'
Total Celanese Corporation stockholders' equity	2,944	2,699	'	'
Noncontrolling interests	0	0	'	'
Total equity	2,944	2,699	'	'
Total liabilities and equity	2,945	2,700	'	'
Issuer [Member]	'	'	'	'
Current Assets	'	'	'	'
Cash and cash equivalents	0	0	0	0
Trade receivables - third party and affiliates	0	0	'	'
Non-trade receivables, net	1,113	482	'	'
Inventories, net	0	0	'	'
Deferred income taxes	0	0	'	'
Marketable securities, at fair value	0	0	'	'
Other assets	0	5	'	'
Total current assets	1,113	487	'	'
Investments in affiliates	4,664	4,458	'	'
Property, plant and equipment	0	0	'	'
Deferred income taxes	0	0	'	'
Other assets	1,915	1,965	'	'
Goodwill	0	0	'	'
Intangible assets, net	0	0	'	'
Total assets	7,692	6,910	'	'
Current Liabilities	'	'	'	'
Short-term borrowings and current installments of long-term debt - third party and affiliates	2,429	1,713	'	'
Trade payables - third party and affiliates	2	0	'	'
Other liabilities	62	28	'	'
Deferred income taxes	17	17	'	'
Income taxes payable	0	0	'	'
Total current liabilities	2,510	1,758	'	'
Noncurrent Liabilities	'	'	'	'
Long-term debt	2,217	2,468	'	'
Deferred income taxes	9	8	'	'
Uncertain tax positions	6	6	'	'
Benefit obligations	0	0	'	'
Other liabilities	40	3	'	'
Total noncurrent liabilities	2,272	2,485	'	'
Total Celanese Corporation stockholders' equity	2,910	2,667	'	'
Noncontrolling interests	0	0	'	'
Total equity	2,910	2,667	'	'
Total liabilities and equity	7,692	6,910	'	'
Subsidiary Guarantors [Member]	'	'	'	'
Current Assets	'	'	'	'
Cash and cash equivalents	824	284	398	275
Trade receivables - third party and affiliates	147	131	'	'
Non-trade receivables, net	2,215	2,166	'	'
Inventories, net	251	243	'	'
Deferred income taxes	75	74	'	'
Marketable securities, at fair value	36	41	'	'
Other assets	19	15	'	'
Total current assets	3,567	2,954	'	'
Investments in affiliates	1,987	1,677	'	'
Property, plant and equipment	998	969	'	'
Deferred income taxes	270	248	'	'
Other assets	145	144	'	'
Goodwill	305	305	'	'
Intangible assets, net	68	64	'	'
Total assets	7,340	6,361	'	'
Current Liabilities	'	'	'	'
Short-term borrowings and current installments of long-term debt - third party and affiliates	827	122	'	'
Trade payables - third party and affiliates	399	312	'	'
Other liabilities	324	441	'	'
Deferred income taxes	0	0	'	'
Income taxes payable	552	460	'	'
Total current liabilities	2,102	1,335	'	'
Noncurrent Liabilities	'	'	'	'
Long-term debt	830	825	'	'
Deferred income taxes	11	0	'	'
Uncertain tax positions	8	16	'	'
Benefit obligations	870	943	'	'
Other liabilities	115	91	'	'
Total noncurrent liabilities	1,834	1,875	'	'
Total Celanese Corporation stockholders' equity	3,404	3,151	'	'
Noncontrolling interests	0	0	'	'
Total equity	3,404	3,151	'	'
Total liabilities and equity	7,340	6,361	'	'
Non-Guarantors [Member]	'	'	'	'
Current Assets	'	'	'	'
Cash and cash equivalents	686	700	702	674
Trade receivables - third party and affiliates	1,043	877	'	'
Non-trade receivables, net	490	586	'	'
Inventories, net	604	622	'	'
Deferred income taxes	53	58	'	'
Marketable securities, at fair value	0	0	'	'
Other assets	43	24	'	'
Total current assets	2,919	2,867	'	'
Investments in affiliates	592	594	'	'
Property, plant and equipment	2,620	2,456	'	'
Deferred income taxes	27	49	'	'
Other assets	314	285	'	'
Goodwill	451	493	'	'
Intangible assets, net	63	78	'	'
Total assets	6,986	6,822	'	'
Current Liabilities	'	'	'	'
Short-term borrowings and current installments of long-term debt - third party and affiliates	356	373	'	'
Trade payables - third party and affiliates	589	628	'	'
Other liabilities	445	513	'	'
Deferred income taxes	10	10	'	'
Income taxes payable	52	32	'	'
Total current liabilities	1,452	1,556	'	'
Noncurrent Liabilities	'	'	'	'
Long-term debt	1,539	1,646	'	'
Deferred income taxes	206	225	'	'
Uncertain tax positions	136	178	'	'
Benefit obligations	207	232	'	'
Other liabilities	209	202	'	'
Total noncurrent liabilities	2,297	2,483	'	'
Total Celanese Corporation stockholders' equity	3,046	2,783	'	'
Noncontrolling interests	191	0	'	'
Total equity	3,237	2,783	'	'
Total liabilities and equity	6,986	6,822	'	'
Eliminations [Member]	'	'	'	'
Current Assets	'	'	'	'
Cash and cash equivalents	0	0	0	0
Trade receivables - third party and affiliates	-174	-141	'	'
Non-trade receivables, net	-3,653	-2,924	'	'
Inventories, net	-84	-61	'	'
Deferred income taxes	-17	-17	'	'
Marketable securities, at fair value	0	0	'	'
Other assets	-19	-16	'	'
Total current assets	-3,947	-3,159	'	'
Investments in affiliates	-9,296	-8,555	'	'
Property, plant and equipment	0	0	'	'
Deferred income taxes	-1	-8	'	'
Other assets	-2,009	-2,053	'	'
Goodwill	0	0	'	'
Intangible assets, net	0	0	'	'
Total assets	-15,253	-13,775	'	'
Current Liabilities	'	'	'	'
Short-term borrowings and current installments of long-term debt - third party and affiliates	-2,847	-2,031	'	'
Trade payables - third party and affiliates	-174	-141	'	'
Other liabilities	-349	-442	'	'
Deferred income taxes	-17	-17	'	'
Income taxes payable	-489	-474	'	'
Total current liabilities	-3,876	-3,105	'	'
Noncurrent Liabilities	'	'	'	'
Long-term debt	-1,947	-2,052	'	'
Deferred income taxes	-1	-8	'	'
Uncertain tax positions	0	0	'	'
Benefit obligations	0	0	'	'
Other liabilities	-69	-9	'	'
Total noncurrent liabilities	-2,017	-2,069	'	'
Total Celanese Corporation stockholders' equity	-9,360	-8,601	'	'
Noncontrolling interests	0	0	'	'
Total equity	-9,360	-8,601	'	'
Total liabilities and equity	($15,253)	($13,775)	'	'

Consolidating_Guarantor_Financ5

Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Cash Flows) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	$796	$608
Investing Activities	'	'
Capital expenditures on property, plant and equipment	-189	-199
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	13
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	-6
Capital expenditures related to Fairway Methanol LLC	-275	-60
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	-13	-38
Net cash provided by (used in) investing activities	-477	-290
Financing Activities	'	'
Short-term borrowings (repayments), net	12	-12
Proceeds from short-term borrowings	47	154
Repayments of short-term borrowings	-70	-51
Proceeds from long-term debt	387	74
Repayments of long-term debt	-19	-192
Purchases of treasury stock, including related fees	-201	-102
Dividends to parent	0	0
Contributions from parent	0	0
Stock option exercises	4	3
Series A common stock dividends	-106	-55
Return of capital to parent	0	0
Contributions from noncontrolling interests	194	0
Other, net	-11	-2
Net cash provided by (used in) financing activities	237	-183
Exchange rate effects on cash and cash equivalents	-30	6
Net increase (decrease) in cash and cash equivalents	526	141
Cash and cash equivalents as of beginning of period	984	959
Cash and cash equivalents as of end of period	1,510	1,100
Parent Guarantor [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	303	144
Investing Activities	'	'
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Capital expenditures related to Fairway Methanol LLC	0	0
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	0	0
Financing Activities	'	'
Short-term borrowings (repayments), net	0	0
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	0	0
Repayments of long-term debt	0	0
Purchases of treasury stock, including related fees	-201	-102
Dividends to parent	0	0
Contributions from parent	0	0
Stock option exercises	4	3
Series A common stock dividends	-106	-55
Return of capital to parent	0	0
Contributions from noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	-303	-154
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	-10
Cash and cash equivalents as of beginning of period	0	10
Cash and cash equivalents as of end of period	0	0
Issuer [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	444	58
Investing Activities	'	'
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Capital expenditures related to Fairway Methanol LLC	0	0
Return of capital from subsidiary	28	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	4	4
Other, net	0	0
Net cash provided by (used in) investing activities	32	4
Financing Activities	'	'
Short-term borrowings (repayments), net	-543	92
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	387	24
Repayments of long-term debt	-7	-32
Purchases of treasury stock, including related fees	0	0
Dividends to parent	-303	-144
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
Contributions from noncontrolling interests	0	0
Other, net	-10	-2
Net cash provided by (used in) financing activities	-476	-62
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	0	0
Subsidiary Guarantors [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	573	650
Investing Activities	'	'
Capital expenditures on property, plant and equipment	-142	-112
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Capital expenditures related to Fairway Methanol LLC	-39	-60
Return of capital from subsidiary	51	0
Contributions to subsidiary	-143	-20
Intercompany loan receipts (disbursements)	543	-92
Other, net	-8	-26
Net cash provided by (used in) investing activities	262	-310
Financing Activities	'	'
Short-term borrowings (repayments), net	13	-4
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	0	50
Repayments of long-term debt	-4	-119
Purchases of treasury stock, including related fees	0	0
Dividends to parent	-303	-144
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
Contributions from noncontrolling interests	0	0
Other, net	-1	0
Net cash provided by (used in) financing activities	-295	-217
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	540	123
Cash and cash equivalents as of beginning of period	284	275
Cash and cash equivalents as of end of period	824	398
Non-Guarantors [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	304	44
Investing Activities	'	'
Capital expenditures on property, plant and equipment	-47	-87
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	13
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	-6
Capital expenditures related to Fairway Methanol LLC	-236	0
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	-5	-12
Net cash provided by (used in) investing activities	-288	-92
Financing Activities	'	'
Short-term borrowings (repayments), net	-1	-8
Proceeds from short-term borrowings	47	154
Repayments of short-term borrowings	-70	-51
Proceeds from long-term debt	0	0
Repayments of long-term debt	-12	-45
Purchases of treasury stock, including related fees	0	0
Dividends to parent	-222	0
Contributions from parent	143	20
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	-79	0
Contributions from noncontrolling interests	194	0
Other, net	0	0
Net cash provided by (used in) financing activities	0	70
Exchange rate effects on cash and cash equivalents	-30	6
Net increase (decrease) in cash and cash equivalents	-14	28
Cash and cash equivalents as of beginning of period	700	674
Cash and cash equivalents as of end of period	686	702
Eliminations [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	-828	-288
Investing Activities	'	'
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Capital expenditures related to Fairway Methanol LLC	0	0
Return of capital from subsidiary	-79	0
Contributions to subsidiary	143	20
Intercompany loan receipts (disbursements)	-547	88
Other, net	0	0
Net cash provided by (used in) investing activities	-483	108
Financing Activities	'	'
Short-term borrowings (repayments), net	543	-92
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	0	0
Repayments of long-term debt	4	4
Purchases of treasury stock, including related fees	0	0
Dividends to parent	828	288
Contributions from parent	-143	-20
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	79	0
Contributions from noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	1,311	180
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	$0	$0

Consolidating_Guarantor_Financ6

Consolidating Guarantor Financial Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2014
Consolidating Guarantor Financial Information [Abstract]	'
Issuer and subsidiary guarantors, ownership percentage	100.00%