10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_______________________________________________________

Form 10-Q

þ	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended March 31, 2013
	Or
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

(Commission File Number) 001-32410

CELANESE CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware (State or Other Jurisdiction of Incorporation or Organization)	98-0420726 (I.R.S. Employer Identification No.)
222 W. Las Colinas Blvd., Suite 900N Irving, TX (Address of Principal Executive Offices)	75039-5421 (Zip Code)

(972) 443-4000

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ  No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ  No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer þ

Accelerated filer o

Non-accelerated filer o (Do not check if a smaller reporting company)

Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o  No þ

The number of outstanding shares of the registrant’s Series A common stock, $0.0001 par value, as of April 15, 2013 was 159,651,273.

CELANESE CORPORATION AND SUBSIDIARIES

Form 10-Q

For the Quarterly Period Ended March 31, 2013

TABLE OF CONTENTS

		Page
	PART I - FINANCIAL INFORMATION
Item 1.	Financial Statements	3
	a) Unaudited Interim Consolidated Statements of Operations for the three months ended March 31, 2013 and 2012	3
	b) Unaudited Interim Consolidated Statements of Comprehensive Income (Loss) for the three months ended March 31, 2013 and 2012	4
	c) Unaudited Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012	5
	d) Unaudited Interim Consolidated Statement of Equity for the three months ended March 31, 2013	6
	e) Unaudited Interim Consolidated Statements of Cash Flows for the three months ended March 31, 2013 and 2012	7
	f) Notes to the Unaudited Interim Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	41
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	57
Item 4.	Controls and Procedures	57
	PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	58
Item 1A.	Risk Factors	58
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	58
Item 3.	Defaults Upon Senior Securities	58
Item 4.	Mine Safety Disclosures	58
Item 5.	Other Information	58
Item 6.	Exhibits	59
Signatures		60

2

Item 1. Financial Statements 

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATED STATEMENTS OF OPERATIONS

	Three Months Ended
	March 31,
	2013		2012
			As Adjusted (Note 1)
	(In $ millions, except share and per share data)
Net sales	1,605		1,633
Cost of sales	(1,272	)	(1,359	)
Gross profit	333		274
Selling, general and administrative expenses	(106	)	(126	)
Amortization of intangible assets	(11	)	(13	)
Research and development expenses	(26	)	(25	)
Other (charges) gains, net	(4	)	—
Foreign exchange gain (loss), net	(1	)	1
Gain (loss) on disposition of businesses and assets, net	(1	)	—
Operating profit (loss)	184		111
Equity in net earnings (loss) of affiliates	54		51
Interest expense	(43	)	(45	)
Refinancing expense	—		—
Interest income	—		1
Dividend income - cost investments	24		—
Other income (expense), net	(1	)	2
Earnings (loss) from continuing operations before tax	218		120
Income tax (provision) benefit	(77	)	73
Earnings (loss) from continuing operations	141		193
Earnings (loss) from operation of discontinued operations	2		—
Gain (loss) on disposition of discontinued operations	—		—
Income tax (provision) benefit from discontinued operations	(1	)	—
Earnings (loss) from discontinued operations	1		—
Net earnings (loss)	142		193
Net (earnings) loss attributable to noncontrolling interests	—		—
Net earnings (loss) attributable to Celanese Corporation	142		193
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	141		193
Earnings (loss) from discontinued operations	1		—
Net earnings (loss)	142		193
Earnings (loss) per common share - basic
Continuing operations	0.88		1.23
Discontinued operations	0.01		—
Net earnings (loss) - basic	0.89		1.23
Earnings (loss) per common share - diluted
Continuing operations	0.88		1.21
Discontinued operations	0.01		—
Net earnings (loss) - diluted	0.89		1.21
Weighted average shares - basic	159,682,386		156,576,896
Weighted average shares - diluted	160,201,636		159,115,232

See the accompanying notes to the unaudited interim consolidated financial statements.

3

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATED STATEMENTS OF

COMPREHENSIVE INCOME (LOSS)

	Three Months Ended
	March 31,
	2013		2012
			As Adjusted (Note 1)
	(In $ millions)
Net earnings (loss)	142		193
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—
Foreign currency translation	(31	)	26
Gain (loss) on interest rate swaps	1		1
Pension and postretirement benefits	—		(4	)
Total other comprehensive income (loss), net of tax	(30	)	23
Total comprehensive income (loss), net of tax	112		216
Comprehensive (income) loss attributable to noncontrolling interests	—		—
Comprehensive income (loss) attributable to Celanese Corporation	112		216

See the accompanying notes to the unaudited interim consolidated financial statements.

4

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED CONSOLIDATED BALANCE SHEETS

	As of March 31, 2013		As of December 31, 2012
			As Adjusted (Note 1)
	(In $ millions, except share data)
ASSETS
Current Assets
Cash and cash equivalents	978		959
Trade receivables - third party and affiliates (net of allowance for doubtful accounts - 2013: $10; 2012: $9)	916		827
Non-trade receivables, net	197		209
Inventories	758		711
Deferred income taxes	50		49
Marketable securities, at fair value	49		53
Other assets	38		31
Total current assets	2,986		2,839
Investments in affiliates	796		800
Property, plant and equipment (net of accumulated depreciation - 2013: $1,536; 2012: $1,506)	3,286		3,350
Deferred income taxes	603		606
Other assets	480		463
Goodwill	762		777
Intangible assets, net	155		165
Total assets	9,068		9,000
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	112		168
Trade payables - third party and affiliates	659		649
Other liabilities	459		475
Deferred income taxes	25		25
Income taxes payable	96		38
Total current liabilities	1,351		1,355
Long-term debt	2,959		2,930
Deferred income taxes	44		50
Uncertain tax positions	180		181
Benefit obligations	1,576		1,602
Other liabilities	1,123		1,152
Commitments and Contingencies
Stockholders’ Equity
Preferred stock, $0.01 par value, 100,000,000 shares authorized (2013 and 2012: 0 issued and outstanding)	—		—
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2013: 183,666,930 issued and 159,680,094 outstanding; 2012: 183,629,237 issued and 159,642,401 outstanding)	—		—
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2013 and 2012: 0 issued and outstanding)	—		—
Treasury stock, at cost (2013: 23,986,836 shares; 2012: 23,986,836 shares)	(905	)	(905	)
Additional paid-in capital	736		731
Retained earnings	2,123		1,993
Accumulated other comprehensive income (loss), net	(119	)	(89	)
Total Celanese Corporation stockholders’ equity	1,835		1,730
Noncontrolling interests	—		—
Total equity	1,835		1,730
Total liabilities and equity	9,068		9,000

See the accompanying notes to the unaudited interim consolidated financial statements.

5

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATED STATEMENT OF EQUITY

	Three Months Ended
	March 31, 2013
	Shares	Amount
		As Adjusted (Note 1)
	(In $ millions, except share data)
Series A Common Stock
Balance as of the beginning of the period	159,642,401	—
Stock option exercises	36,900	—
Purchases of treasury stock	—	—
Stock awards	793	—
Balance as of the end of the period	159,680,094	—
Treasury Stock
Balance as of the beginning of the period	23,986,836	(905	)
Purchases of treasury stock, including related fees	—	—
Balance as of the end of the period	23,986,836	(905	)
Additional Paid-In Capital
Balance as of the beginning of the period		731
Stock-based compensation, net of tax		4
Stock option exercises, net of tax		1
Balance as of the end of the period		736
Retained Earnings
Balance as of the beginning of the period		1,993
Net earnings (loss) attributable to Celanese Corporation		142
Series A common stock dividends		(12	)
Balance as of the end of the period		2,123
Accumulated Other Comprehensive Income (Loss), Net
Balance as of the beginning of the period		(89	)
Other comprehensive income (loss), net of tax		(30	)
Balance as of the end of the period		(119	)
Total Celanese Corporation stockholders’ equity		1,835
Noncontrolling Interests
Balance as of the beginning of the period		—
Net earnings (loss) attributable to noncontrolling interests		—
Balance as of the end of the period		—
Total equity		1,835

See the accompanying notes to the unaudited interim consolidated financial statements.

6

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended
	March 31,
	2013		2012
			As Adjusted (Note 1)
	(In $ millions)
Operating Activities
Net earnings (loss)	142		193
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities
Other charges (gains), net of amounts used	(4	)	(4	)
Depreciation, amortization and accretion	80		77
Pension and postretirement benefit expense	(5	)	3
Pension and postretirement contributions	(19	)	(66	)
Deferred income taxes, net	(8	)	(91	)
(Gain) loss on disposition of businesses and assets, net	1		—
Refinancing expense	—		—
Other, net	2		72
Operating cash provided by (used in) discontinued operations	1		—
Changes in operating assets and liabilities
Trade receivables - third party and affiliates, net	(100	)	(47	)
Inventories	(55	)	(32	)
Other assets	(7	)	19
Trade payables - third party and affiliates	36		123
Other liabilities	83		(32	)
Net cash provided by (used in) operating activities	147		215
Investing Activities
Capital expenditures on property, plant and equipment	(74	)	(106	)
Acquisitions, net of cash acquired	—		(23	)
Proceeds from sale of businesses and assets, net	—		—
Capital expenditures related to Kelsterbach plant relocation	(3	)	(21	)
Other, net	(10	)	(5	)
Net cash provided by (used in) investing activities	(87	)	(155	)
Financing Activities
Short-term borrowings (repayments), net	(19	)	10
Proceeds from short-term debt	24		24
Repayments of short-term debt	(24	)	(24	)
Proceeds from long-term debt	50		—
Repayments of long-term debt	(55	)	(8	)
Purchases of treasury stock, including related fees	—		(20	)
Stock option exercises	1		7
Series A common stock dividends	(12	)	(10	)
Other, net	—		—
Net cash provided by (used in) financing activities	(35	)	(21	)
Exchange rate effects on cash and cash equivalents	(6	)	6
Net increase (decrease) in cash and cash equivalents	19		45
Cash and cash equivalents as of beginning of period	959		682
Cash and cash equivalents as of end of period	978		727

See the accompanying notes to the unaudited interim consolidated financial statements.

7

CELANESE CORPORATION AND SUBSIDIARIES

NOTES TO THE UNAUDITED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

1. 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, 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 months endedMarch 31, 2013 and 2012 contained in this Quarterly Report on Form 10-Q ("Quarterly Report") were prepared in accordance with accounting principles generally accepted in the United States of America ("US GAAP") for all periods presented. 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 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, 2012, filed on February 8, 2013 with the SEC as part of the Company’s Annual Report on Form 10-K.

Operating results for the three months endedMarch 31, 2013 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 subsidiaries in which the Company's ownership is less than 100%, 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.

8

Change in accounting policy regarding pension and other postretirement benefits

Effective January 1, 2013, the Company elected to change its accounting policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for its defined benefit pension plans and other postretirement benefit plans. Previously, the Company recognized the actuarial gains and losses as a component of Accumulated other comprehensive income (loss), net within the consolidated balance sheets on an annual basis and amortized the gains and losses into operating results over the average remaining service period to retirement date for active plan participants or, for retired participants, the average remaining life expectancy. For defined benefit pension plans, the unrecognized gains and losses were amortized when the net gains and losses exceeded 10% of the greater of the market-related value of plan assets or the projected benefit obligation at the beginning of the year. For other postretirement benefits, amortization occurred when the net gains and losses exceeded 10% of the accumulated postretirement benefit obligation at the beginning of the year.

Previously, differences between the actual rate of return on plan assets and the long-term expected rate of return on plan assets were not generally recognized in net periodic benefit cost in the year that the difference occurred. These differences were deferred and amortized into net periodic benefit cost over the average remaining future service period of employees. The asset gains and losses subject to amortization and the long-term expected return on plan assets were previously calculated using a five-year smoothing of asset gains and losses referred to as the market-related value to stabilize variability in the plan asset values.

The Company now applies the long-term expected rate of return to the fair value of plan assets and immediately recognizes the change in fair value of plan assets and net actuarial gains and losses annually in the fourth quarter of each fiscal year and whenever a plan is required to be remeasured. Events requiring a plan remeasurement will be recognized in the quarter in which such remeasurement event occurs. The remaining components of the Company's net periodic benefit cost are recorded on a quarterly basis. While the Company's historical policy of recognizing the change in fair value of plan assets and net actuarial gains and losses is considered acceptable under US GAAP, the Company believes the new policy is preferable as it eliminates the delay in recognizing gains and losses within operating results. This change improves transparency within the Company's operating results by immediately recognizing the effects of economic and interest rate trends on plan investments and assumptions in the year these gains and losses are actually incurred. The policy changes have no impact on future pension and postretirement benefit plan funding or pension and postretirement benefits paid to participants. Financial information for all periods presented has been retrospectively adjusted.

In connection with the changes in accounting policy for pension and other postretirement benefits and in an attempt to properly match the actual operational expenses each business segment is incurring, the Company changed its allocation of net periodic benefit cost. Previously, the Company allocated all components of net periodic benefit cost to each business segment on a ratable basis. The Company now allocates only the service cost and amortization of prior service cost components of its pension and postretirement plans to its business segments. All other components of net periodic benefit cost are recorded to Other Activities. The components of net periodic benefit cost that are no longer allocated to each business segment include interest cost, expected return on assets and net actuarial gains and losses as these components are considered financing activities managed at the corporate level. The Company believes the revised expense allocation more appropriately matches the cost incurred for active employees to the respective business segment. Business segment information for prior periods has been retrospectively adjusted (Note 18).

9

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of operations is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions, except per share data)
Cost of sales	(1,363	)	4		(1,359	)
Gross profit	270		4		274
Selling, general and administrative expenses	(134	)	8		(126	)
Research and development expenses	(26	)	1		(25	)
Operating profit (loss)	98		13		111
Earnings (loss) from continuing operations before tax	107		13		120
Income tax (provision) benefit	76		(3	)	73
Earnings (loss) from continuing operations	183		10		193
Net earnings (loss)	183		10		193
Net earnings (loss) attributable to Celanese Corporation	183		10		193
Earnings (loss) per common share - basic
Continuing operations	1.17		0.06		1.23
Discontinued operations	—		—		—
Net earnings (loss) - basic	1.17		0.06		1.23
Earnings (loss) per common share - diluted
Continuing operations	1.15		0.06		1.21
Discontinued operations	—		—		—
Net earnings (loss) - diluted	1.15		0.06		1.21

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of comprehensive income (loss) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported	Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183	10		193
Pension and postretirement benefits	6	(10	)	(4	)
Total other comprehensive income (loss), net of tax	33	(10	)	23
Total comprehensive income (loss), net of tax	216	—		216
Comprehensive (income) loss attributable to Celanese Corporation	216	—		216

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated balance sheet is as follows:

	As of December 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Retained earnings	2,986		(993	)	1,993
Accumulated other comprehensive income (loss), net	(1,082	)	993		(89	)

The cumulative effect of the change in accounting policy for pension and other postretirement benefits on Retained earnings as of December 31, 2011 was a decrease of $760 million, with an equivalent increase to Accumulated other comprehensive income.

10

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of cash flows is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183		10		193
Pension and postretirement benefit expense	—		3		3
Pension and postretirement contributions	—		(66	)	(66	)
Deferred income taxes, net	(94	)	3		(91	)
Other liabilities	(82	)	50		(32	)

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the business segment financial information (Note 18) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change	As Adjusted
	(In $ millions)
Operating Profit (Loss)
Advanced Engineered Materials	21		3	24
Consumer Specialties	39		1	40
Industrial Specialties	19		1	20
Acetyl Intermediates	60		2	62
Other Activities	(41	)	6	(35	)
Total	98		13	111

2. Recent Accounting Pronouncements

In March 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2013-05, Parent's Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity, an amendment to FASB Accounting Standards Codification ("ASC") Topic 830, Foreign Currency Matters ("FASB ASC Topic 830"). The update clarifies that complete or substantially complete liquidation of a foreign entity is required to release the cumulative translation adjustment ("CTA") for transactions occurring within a foreign entity. However, transactions impacting investments in a foreign entity may result in a full or partial release of CTA even though complete or substantially complete liquidation of the foreign entity has not occurred. Furthermore, for transactions involving step acquisitions, the CTA associated with the previous equity-method investment will be fully released when control is obtained and consolidation occurs. This ASU is effective for fiscal years beginning after December 15, 2013. The Company will apply the guidance prospectively to derecognition events occurring after the effective date.

In February 2013, the FASB issued ASU 2013-04, Obligations Resulting From Joint and Several Liability Arrangements for Which the Total Amount of the Obligation is Fixed at the Reporting Date, an amendment to FASB ASC Topic 405, Liabilities ("FASB ASC Topic 405"). The update requires an entity to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed as of the reporting date as the sum of the obligation the entity agreed to pay among its co-obligors and any additional amount the entity expects to pay on behalf of its co-obligors. This ASU is effective for annual and interim periods beginning after December 15, 2013 and is required to be applied retrospectively to all prior periods presented for those obligations that existed upon adoption of the ASU. The Company is still assessing the potential impact of adopting this guidance.

11

3. Acquisitions, Dispositions, Ventures and Plant Closures

Acquisitions

In January 2012, the Company completed the acquisition of certain assets from Ashland Inc., including two product lines, Vinac^® and Flexbond^®, to support the strategic growth of the Company's Emulsions business (Note 6). The acquired operations are included in the Industrial Specialties segment. Pro forma financial information since the acquisition date has not been provided as the acquisition did not have a material impact on the Company’s financial information.

The Company allocated the purchase price of the acquisitions to identifiable intangible assets acquired based on their estimated fair values. The excess of purchase price over the aggregate fair values was recorded as goodwill. Intangible assets were valued using the relief from royalty and discounted cash flow methodologies which are considered Level 3 measurements under FASB ASC Topic 820, Fair Value Measurement ("FASB ASC Topic 820"). The relief from royalty method estimates the Company’s theoretical royalty savings from ownership of the intangible asset. Key assumptions used in this model include discount rates, royalty rates, growth rates, sales projections and terminal value rates, all of which require significant management judgment and, therefore, are susceptible to change. The key assumptions used in the discounted cash flow valuation model include discount rates, growth rates, cash flow projections and terminal value rates. Discount rates, growth rates and cash flow projections are the most sensitive and susceptible to change as they require significant management judgment. The Company, with the assistance of third-party valuation consultants, calculated the fair value of the intangible assets acquired to allocate the purchase price at the acquisition date.

4. Marketable Securities, at Fair Value

The Company’s captive insurance companies and nonqualified trusts hold available-for-sale securities for capitalization and funding requirements, respectively.

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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Mutual Funds
Amortized cost	49	53
Gross unrealized gain	—	—
Gross unrealized loss	—	—
Fair value	49	53

See Note 16, Fair Value Measurements, for additional information regarding the fair value of the Company's marketable securities.

5. Inventories

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Finished goods	560	514
Work-in-process	52	42
Raw materials and supplies	146	155
Total	758	711

12

6. Goodwill and Intangible Assets, Net

Goodwill

	Advanced Engineered Materials		Consumer Specialties		Industrial Specialties		Acetyl Intermediates		Total
	(In $ millions)
As of December 31, 2012
Goodwill	297		249		42		189		777
Accumulated impairment losses	—		—		—		—		—
Net book value	297		249		42		189		777
Exchange rate changes	(4	)	(4	)	(1	)	(6	)	(15	)
As of March 31, 2013
Goodwill	293		245		41		183		762
Accumulated impairment losses	—		—		—		—		—
Net book value	293		245		41		183		762

Intangible Assets, Net

Finite-lived intangibles are as follows:

	Licenses		Customer- Related Intangible Assets		Developed Technology		Covenants Not to Compete and Other		Total
	(In $ millions)
Gross Asset Value
As of December 31, 2012	32		525		30		32		619
Acquisitions	—		—		—		4		4		(1)
Exchange rate changes	—		(11	)	—		—		(11	)
As of March 31, 2013	32		514		30		36		612
Accumulated Amortization
As of December 31, 2012	(16	)	(480	)	(17	)	(23	)	(536	)
Amortization	(1	)	(9	)	(1	)	—		(11	)
Exchange rate changes	—		10		—		—		10
As of March 31, 2013	(17	)	(479	)	(18	)	(23	)	(537	)
Net book value	15		35		12		13		75

______________________________

⁽¹⁾   Weighted average amortization period is 20 years.

Indefinite-lived intangibles are as follows:

	Trademarks and Trade Names
	(In $ millions)
As of December 31, 2012	82
Acquisitions	—
Exchange rate changes	(2	)
As of March 31, 2013	80

The Company’s trademarks and trade names have an indefinite life. For the three months endedMarch 31, 2013, the Company did not renew or extend any intangible assets.

13

Estimated amortization expense for the succeeding five fiscal years is as follows:

	(In $ millions)
2014	21
2015	10
2016	7
2017	6
2018	3

7. Current Other Liabilities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Salaries and benefits	74	74
Environmental (Note 11)	21	21
Restructuring (Note 13)	25	30
Insurance	14	15
Asset retirement obligations	31	38
Derivatives (Note 15)	18	23
Current portion of benefit obligations	47	47
Interest	37	23
Sales and use tax/foreign withholding tax payable	18	17
Uncertain tax positions	60	65
Customer rebates	38	44
Other	76	78
Total	459	475

8. Noncurrent Other Liabilities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Environmental (Note 11)	73	78
Insurance	61	58
Deferred revenue	34	36
Deferred proceeds(1)	882	909
Asset retirement obligations	25	26
Derivatives (Note 15)	4	8
Income taxes payable	3	2
Other	41	35
Total	1,123	1,152

______________________________

⁽¹⁾  Primarily relates to proceeds received from the Frankfurt, Germany Airport as part of a settlement for the Company to cease operations and sell its Kelsterbach, Germany manufacturing site, included in the Advanced Engineered Materials segment (Note 20). Such proceeds will be deferred until title transfers to the Frankfurt, Germany Airport.

14

9. Debt

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Short-Term Borrowings and Current Installments of Long-term Debt - Third Party and Affiliates
Current installments of long-term debt	23	60
Short-term borrowings, including amounts due to affiliates	89	108
Total	112	168

The Company's weighted average interest rate on short-term borrowings, including amounts due to affiliates, was 4.6% as of March 31, 2013 compared to 4.0% as of December 31, 2012.

	As of March 31, 2013		As of December 31, 2012
	(In $ millions)
Long-Term Debt
Senior credit facilities - Term C loan due 2016	967		977
Senior unsecured notes due 2018, interest rate of 6.625%	600		600
Senior unsecured notes due 2021, interest rate of 5.875%	400		400
Senior unsecured notes due 2022, interest rate of 4.625%	500		500
Credit-linked revolving facility due 2014, interest rate of 1.7%	100		50
Pollution control and industrial revenue bonds, interest rates ranging from 5.7% to 6.7%, due at various dates through 2030	169		182
Obligations under capital leases due at various dates through 2054	246		244
Other bank obligations	—		37
Subtotal	2,982		2,990
Current installments of long-term debt	(23	)	(60	)
Total	2,959		2,930

Senior Notes

In November 2012, Celanese US completed an offering of $500 million in aggregate principal amount of 4.625% senior unsecured notes due 2022 (the "4.625% Notes") in a public offering registered under the Securities Act of 1933, as amended (the "Securities Act"). The 4.625% Notes are guaranteed on a senior unsecured basis by Celanese and each of the domestic subsidiaries of Celanese US that guarantee its obligations under its senior secured credit facilities (the "Subsidiary Guarantors").

The 4.625% Notes were issued under an indenture, dated May 6, 2011, as amended by a second supplemental indenture, dated November 13, 2012 (the "Second Supplemental Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. Celanese US will pay interest on the 4.625% Notes on March 15 and September 15 of each year which commenced on March 15, 2013. Prior to November 15, 2022, Celanese US may redeem some or all of the 4.625% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the Second Supplemental Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 4.625% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US.

In May 2011, Celanese US completed an offering of $400 million in aggregate principal amount of 5.875% senior unsecured notes due 2021 (the "5.875% Notes") in a public offering registered under the Securities Act. The 5.875% Notes are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors.

15

The 5.875% Notes were issued under an indenture and a first supplemental indenture, each dated May 6, 2011 (the "First Supplemental Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. Celanese US pays interest on the 5.875% Notes on June 15 and December 15 of each year which commenced on December 15, 2011. Prior to June 15, 2021, Celanese US may redeem some or all of the 5.875% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the First Supplemental Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 5.875% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US.

In September 2010, Celanese US completed the private placement of $600 million in aggregate principal amount of 6.625% senior unsecured notes due 2018 (the "6.625% Notes" and, together with the 4.625% Notes and the 5.875% Notes, collectively the "Senior Notes") under an indenture dated September 24, 2010 (the "Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. In April 2011, Celanese US registered the 6.625% Notes under the Securities Act. Celanese US pays interest on the 6.625% Notes on April 15 and October 15 of each year which commenced on April 15, 2011. The 6.625% Notes are redeemable, in whole or in part, at any time on or after October 15, 2014 at the redemption prices specified in the Indenture. Prior to October 15, 2014, Celanese US may redeem some or all of the 6.625% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 6.625% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US. The 6.625% Notes are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors.

The Indenture and the First and Second Supplemental Indentures 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

In September 2010, Celanese US, Celanese, and certain of the domestic subsidiaries of Celanese US entered into an amendment agreement with the lenders under Celanese US’s existing senior secured credit facilities in order to amend and restate the corresponding Credit Agreement, dated as of April 2, 2007 (as previously amended, the "Existing Credit Agreement", and as amended and restated by the amendment agreement, the "Amended Credit Agreement"). The Amended Credit Agreement consists of the Term C loan facility due 2016, the Term B loan facility due 2014, a $600 million revolving credit facility terminating in 2015 and a $228 million credit-linked revolving facility terminating in 2014.

In May 2011, Celanese US prepaid its outstanding Term B loan facility under the Amended Credit Agreement set to mature in 2014 with an aggregate principal amount of $516 million using proceeds from the 5.875% Notes and cash on hand.

In November 2012, Celanese US prepaid $400 million of its outstanding Term C loan facility under the Amended Credit Agreement set to mature in 2016 using proceeds from the 4.625% Notes.

The margin for borrowings under the revolving credit facility is currently 2.5% above LIBOR or EURIBOR, as applicable, subject to increase or reduction in certain circumstances based on changes in the Company’s corporate credit ratings. Borrowings under the credit-linked revolving facility and the Term C loan facility bear interest at a variable interest rate based on LIBOR (for US dollars) or EURIBOR (for Euros), plus a margin which varies based on the Company's net leverage ratio.

The estimated net leverage ratio and margin are as follows:

	As of March 31, 2013
	Estimated Total Net Leverage Ratio	Estimated Margin
Credit-linked revolving facility	1.56	1.50	%
Term C	1.56	2.75	%

16

The margin on each facility may increase or decrease 0.25% based on the following:

Credit-Linked Revolving Facility		Term C Loan Facility
Total Net Leverage Ratio	Margin over LIBOR or EURIBOR	Total Net Leverage Ratio	Margin over LIBOR or EURIBOR
< = 2.25	1.50%	< = 1.75	2.75%
> 2.25	1.75%	> 1.75 and < = 2.25	3.00%
		> 2.25	3.25%

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 and credit-linked revolving facility of 0.25% and 1.50% per annum, respectively.

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 as of April 2, 2007.

As a condition to borrowing funds or requesting letters of credit be issued under the revolving 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 first lien senior secured leverage ratios and the borrowing capacity under the revolving credit facility are as follows:

	As of March 31, 2013
	First Lien Senior Secured Leverage Ratio
			Estimate, if Fully Drawn	Borrowing Capacity
	Maximum	Estimate
				(In $ millions)
Revolving credit facility	3.90	0.91	1.41	600

The balances available for borrowing are as follows:

	As of March 31, 2013
	(In $ millions)
Revolving Credit Facility
Borrowings outstanding	—
Letters of credit issued	—
Available for borrowing	600
Credit-Linked Revolving Facility
Borrowings outstanding	100
Letters of credit issued	78
Available for borrowing	50

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 $40 million and the occurrence of a change of control. Failure to comply with these covenants, or the occurrence of any other

17

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 March 31, 2013.

In anticipation of a possible change in pension accounting policy, in January 2013, the Company entered into a non-material amendment to the Amended Credit Agreement with the effect that certain computations for covenant compliance purposes will be evaluated as if the change in pension accounting policy had not occurred. The amendment also modified the Amended Credit Agreement in other, non-material respects.

10. Benefit Obligations

As discussed in Note 1, effective January 1, 2013 the Company elected to change its policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for its defined benefit pension plans and other postretirement benefit plans.  This accounting change has been applied retrospectively to all periods presented.

The components of net periodic benefit costs are as follows:

	Pension Benefits				Postretirement Benefits
	Three Months Ended March 31,
	2013		2012		2013	2012
			As Adjusted (Note 1)			As Adjusted (Note 1)
	(In $ millions)
Service cost	9		7		1	—
Interest cost	39		43		2	3
Expected return on plan assets	(56	)	(51	)	—	—
Recognized actuarial (gain) loss	—		—		—	—
Amortization of prior service cost (credit)	—		1		—	—
Curtailment (gain) loss	—		—		—	—
Total	(8	)	—		3	3

Commitments to fund benefit obligations during 2013 are as follows:

	As of March 31, 2013	Expected for 2013
	(In $ millions)
Cash contributions to defined benefit pension plans	9	30
Benefit payments to nonqualified pension plans	6	22
Benefit payments to other postretirement benefit plans	4	24

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 $2 million for the three months endedMarch 31, 2013.

11. 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.

18

The components of environmental remediation reserves are as follows:

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Demerger obligations (Note 17)	28	31
Divestiture obligations (Note 17)	21	21
Active sites	26	28
US Superfund sites	15	15
Other environmental remediation reserves	4	4
Total	94	99

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, 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 Environmental Protection Agency, 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 US Environmental Protection Agency ("EPA") to perform a Remedial Investigation/Feasibility Study ("RI/FS") of the contaminants in the lower 17-mile stretch known as the Lower Passaic River Study Area. The RI/FS is ongoing and may take several more years to complete. The Company is among a group of settling parties to a June 2012 Administrative Order on Consent with the EPA to perform a removal action on a small section of the river. The Company has also been named as a third-party defendant along with more than 200 other entities in an action initially brought by the New Jersey Department of Environmental Protection ("NJDEP") in the Supreme Court of New Jersey against Occidental Chemical Corporation and several other companies. This suit by the NJDEP seeks recovery of past and future clean-up costs, as well as unspecified economic damages, punitive damages, penalties and a variety of other forms of relief arising from alleged discharges into the Lower Passaic River.

In 2007, the EPA issued a draft study that evaluated alternatives for early remedial action of a portion of the Passaic River at an estimated cost of $900 million to $2.3 billion. Several parties commented on the draft study, and the EPA has announced its intention to issue a proposed plan in 2013. Although the Company's assessment that the contamination allegedly released by the Company is likely an insignificant aspect of the final remedy, because the RI/FS is still ongoing, and the EPA has not finalized

19

its study or the scope of requested cleanup the Company cannot reliably estimate its portion of the final remedial costs for this matter at this time. However, the Company currently believes that its portion of the costs would be less than approximately 1% to 2%. The Company is vigorously defending these and all related matters.

Environmental Proceedings

On January 7, 2013, following self-disclosures by the Company, the Company's Meredosia, Illinois site received a Notice of Violation/Finding of Violation from the US Environmental Protection Agency Region 5 ("EPA") alleging Clean Air Act violations. The Company is working with the EPA and with the state agency to reach a resolution of this matter. Based on currently available information and the Company's past experience, we do not believe that resolution of this matter will have a significant impact on the Company, even though the Company cannot conclude that a penalty will be less than $100,000. The Meredosia, Illinois site is included in the Industrial Specialties segment.

12. 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.

Treasury Stock

The Company’s Board of Directors authorized the repurchase of Common Stock as follows:

	Authorized Amount
	(In $ millions)
February 2008	400
October 2008	100
April 2011	129
October 2012	264
As of March 31, 2013	893

The authorization gives management discretion in determining the timing and conditions under which shares may be repurchased. The repurchase program does not have an expiration date.

The share repurchase activity pursuant to this authorization is as follows:

	Three Months Ended March 31,				Total From February 2008 Through March 31, 2013
	2013		2012
Shares repurchased	—		444,901		13,142,527		(1)
Average purchase price per share	$	—	$	46.34	$	38.14
Amount spent on repurchased shares (in millions)	$	—	$	20	$	501

______________________________

⁽¹⁾  Excludes 5,823 shares withheld from employee to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock is considered outstanding at the time of issuance and therefore, 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.

20

Other Comprehensive Income (Loss), Net

	Three Months Ended March 31,
	2013						2012
	Gross Amount		Income Tax (Provision) Benefit		Net Amount		Gross Amount			Income Tax (Provision) Benefit		Net Amount
							As Adjusted (Note 1)
	(In $ millions)
Unrealized gain (loss) on marketable securities	—		—		—		—			—		—
Foreign currency translation	(31	)	—		(31	)	26			—		26
Gain (loss) on interest rate swaps	2		(1	)	1		2			(1	)	1
Pension and postretirement benefits	—		—		—		(1	)	(1)	(3	)	(4	)
Total	(29	)	(1	)	(30	)	27			(4	)	23

______________________________

⁽¹⁾  Amount includes amortization of actuarial losses of $2 million related to the Company's equity method investments' pension plans.

Adjustments to Accumulated other comprehensive income (loss) are as follows:

	Unrealized Gain (Loss) on Marketable Securities		Foreign Currency Translation		Gain (Loss) on Interest Rate Swaps			Pension and Postretire- ment Benefits			Accumulated Other Comprehensive Income (Loss), Net
	(In $ millions)
As of December 31, 2012 - As Adjusted (Note 1)	(1	)	(23	)	(50	)		(15	)		(89	)
Other comprehensive income before reclassifications	—		(31	)	—			—			(31	)
Amounts reclassified from accumulated other comprehensive income	—		—		2		(1)	—		(2)	2
Income tax (provision) benefit	—		—		(1	)		—			(1	)
As of March 31, 2013	(1	)	(54	)	(49	)		(15	)		(119	)

______________________________

⁽¹⁾  This accumulated other comprehensive income component is related to interest rate swaps and is included in interest expense (Note 15).

⁽²⁾  This accumulated other comprehensive income component is the amortization of prior service cost included in net periodic benefit cost (Note 10).

13. Other (Charges) Gains, Net

	Three Months Ended
	March 31,
	2013		2012
	(In $ millions)
Employee termination benefits	(2	)	—
Kelsterbach plant relocation (Note 20)	(2	)	—
Total	(4	)	—

During the three months endedMarch 31, 2013, the Company recorded $2 million of employee termination benefits related to a business optimization project which is included in the Industrial Specialties and Acetyl Intermediates segments.

21

The changes in the restructuring reserves by business segment are as follows:

	Advanced Engineered Materials		Consumer Specialties		Industrial Specialties	Acetyl Intermediates		Other		Total
	(In $ millions)
Employee Termination Benefits
As of December 31, 2012	6		13		—	3		7		29
Additions	—		—		1	1		—		2
Cash payments	(1	)	(3	)	—	—		(2	)	(6	)
Other changes	—		—		—	—		—		—
Exchange rate changes	—		—		—	—		—		—
As of March 31, 2013	5		10		1	4		5		25
Plant/Office Closures
As of December 31, 2012	—		—		—	1		—		1
Additions	—		—		—	—		—		—
Cash payments	—		—		—	—		—		—
Other changes	—		—		—	—		—		—
Exchange rate changes	—		—		—	(1	)	—		(1	)
As of March 31, 2013	—		—		—	—		—		—
Total	5		10		1	4		5		25

14. Income Taxes

	Three Months Ended
	March 31,
	2013		2012
			As Adjusted (Note 1)
Effective income tax rate	35	%	(61	)%

The effective income tax rate for the three months endedMarch 31, 2012 would have been 19% excluding the recognition of foreign tax credit carryforwards, partially offset by the reassessment of certain permanently reinvested foreign earnings. As compared to the three months endedMarch 31, 2012, absent the effect of these events, the increase in the effective income tax rate for the three months endedMarch 31, 2013 was primarily due to losses in jurisdictions without income tax benefit, increased earnings in high income tax jurisdictions and reassessment of the recoverability of deferred tax assets in certain jurisdictions.

During the three months ended March 31, 2012, the Company amended certain prior year income tax returns to recognize the benefit of available foreign tax credit carryforwards. As a result, the Company recognized a tax benefit of $142 million. The available foreign tax credits are subject to a ten year carryforward period and expire beginning 2014 through 2021. The Company expects to fully utilize the credits within the prescribed carryforward period.

In February 2012, the Company amended its existing joint venture and other related agreements with its venture partner in Polyplastics Company, Ltd ("Polyplastics"). The amended agreements ("Agreements"), among other items, modified certain dividend rights, resulting in a cash dividend payment to the Company of $72 million during the three months ended March 31, 2012. In addition, as a result of the Agreements, Polyplastics is required to pay certain annual dividends to the venture partners. Consequently, Polyplastics' undistributed earnings will no longer be invested indefinitely. Accordingly, the Company recognized a deferred tax liability of $38 million that was recorded to Income tax provision (benefit) in the unaudited interim consolidated statement of operations during the three months ended March 31, 2012, related to the taxable outside basis difference of its investment in Polyplastics.

On January 2, 2013, the US enacted the American Taxpayer Relief Act of 2012 (the “2012 Tax Relief Act”). The 2012 Tax Relief Act extends many expired corporate income tax provisions through 2013, including the research and development credit, the look-through treatment of payments between related controlled foreign corporations, the active financing exception and

22

bonus depreciation, including retroactive application to January 1, 2012. These provisions did not have a significant impact on the Company.

Liabilities for uncertain tax positions and related interest and penalties are recorded in Uncertain tax positions and current Other liabilities in the unaudited consolidated balance sheets. For the three months endedMarch 31, 2013, the Company's uncertain tax positions increased $4 million due to interest and changes in uncertain tax positions in certain jurisdictions, and decreased $6 million due to exchange rate changes.

The Company's US tax returns for the years 2009 through 2011 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).

15. 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). If an interest rate swap agreement is terminated prior to its maturity, the amount previously recorded in Accumulated other comprehensive income (loss), net is recognized into earnings over the period that the hedged transaction impacts earnings. If the hedging relationship is discontinued because it is probable that the forecasted transaction will not occur according to the original strategy, any related amounts previously recorded in Accumulated other comprehensive income (loss), net are recognized into earnings immediately.

US-dollar interest rate swap derivative arrangements are as follows:

As of March 31, 2013
Notional Value	Effective Date	Expiration Date	Fixed Rate (1)
(In $ millions)
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).

As of December 31, 2012
Notional Value	Effective Date	Expiration Date	Fixed Rate (1)
(In $ millions)
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 enters into foreign currency forwards and swaps to minimize its exposure to foreign currency fluctuations. Through these instruments, the Company mitigates its foreign currency exposure on transactions with third party entities as well as intercompany transactions. The foreign currency forwards and swaps are not designated as hedges under FASB ASC Topic 815, Derivatives and Hedging ("FASB ASC Topic 815"). Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on intercompany balances are classified as 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 classified as Foreign exchange gain (loss), net, in the unaudited interim consolidated statements of operations.

23

Gross notional values of the foreign currency forwards and swaps are as follows:

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Total	802	902

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 of FASB ASC Topic 815 based on the probability at the inception and throughout the term of the contract that the Company would not settle net and the transaction would result in the physical delivery of the commodity. As such, realized gains and losses on these contracts are included in the cost of the commodity upon the settlement of the contract.

In addition, the Company occasionally enters into financial derivatives to hedge a component of a raw material or energy source. Typically, these types of transactions do not qualify for hedge accounting. These instruments are marked to market at each reporting period and gains (losses) are included in Cost of sales in the unaudited interim consolidated statements of operations. During the three months endedMarch 31, 2013 and 2012, the Company did not have any open financial derivative contracts for commodities.

Information regarding changes in the fair value of the Company’s derivative arrangements is as follows:

	Three Months Ended					Three Months Ended
	March 31, 2013					March 31, 2012
	Gain (Loss) Recognized in Other Comprehensive Income (Loss)		Gain (Loss) Recognized in Earnings (Loss)			Gain (Loss) Recognized in Other Comprehensive Income (Loss)			Gain (Loss) Recognized in Earnings (Loss)
	(In $ millions)
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	—	(1)	(4	)	(2)	(1	)	(3)	(3	)	(2)
Derivatives Not Designated as Hedges
Interest rate swaps	—		2		(4)	—			—		(4)
Foreign currency forwards and swaps	—		3		(5)	—			(4	)	(5)
Total	—		1			(1	)		(7	)

______________________________

⁽¹⁾  Amount excludes $1 million of tax expense recognized in Other comprehensive income (loss).

⁽²⁾  Amount represents reclassification from Accumulated other comprehensive income (loss), net and is included in Interest expense in the unaudited interim consolidated statements of operations.

⁽³⁾  Amount excludes $1 million of tax expense recognized in Other comprehensive income (loss).

⁽⁴⁾  Included in Interest expense 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.

See Note 16, Fair Value Measurements, for additional information regarding the fair value of the Company’s derivative arrangements.

Certain of the Company's foreign currency forwards and swaps and interest rate 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

24

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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Derivative Assets
Gross amount recognized	5	2
Gross amount offset in the consolidated balance sheets	—	—
Net amount presented in the consolidated balance sheets	5	2
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	4	—

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Derivative Liabilities
Gross amount recognized	23	32
Gross amount offset in the consolidated balance sheets	1	1
Net amount presented in the consolidated balance sheets	22	31
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	21	29

16. Fair Value Measurements

The Company follows the provisions of FASB ASC Topic 820 for financial assets and liabilities. FASB ASC Topic 820 establishes a three-tiered fair value hierarchy that 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. 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.

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 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.

25

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 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 Using
	Balance Sheet Classification	Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)		Total
		(In $ millions)
Mutual funds	Marketable securities, at fair value	49	—		49
Derivatives Not Designated as Hedges
Foreign currency forwards and swaps	Current Other assets	—	5		5
Total assets as of March 31, 2013		49	5		54
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	Current Other liabilities	—	(10	)	(10	)
Interest rate swaps	Noncurrent Other liabilities	—	(4	)	(4	)
Derivatives Not Designated as Hedges
Interest rate swaps	Current Other liabilities	—	(5	)	(5	)
Foreign currency forwards and swaps	Current Other liabilities	—	(3	)	(3	)
Total liabilities as of March 31, 2013		—	(22	)	(22	)
Mutual funds	Marketable securities, at fair value	53	—		53
Derivatives Not Designated as Hedges
Foreign currency forwards and swaps	Current Other assets	—	2		2
Total assets as of December 31, 2012		53	2		55
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	Current Other liabilities	—	(10	)	(10	)
Interest rate swaps	Noncurrent Other liabilities	—	(7	)	(7	)
Derivatives Not Designated as Hedges
Interest rate swaps	Current Other liabilities	—	(5	)	(5	)
Interest rate swaps	Noncurrent Other liabilities	—	(1	)	(1	)
Foreign currency forwards and swaps	Current Other liabilities	—	(8	)	(8	)
Total liabilities as of December 31, 2012		—	(31	)	(31	)

26

Carrying values and fair values of financial instruments that are not carried at fair value are as follows:

		Fair Value Measurement Using
	Carrying Amount	Significant Other Observable Inputs (Level 2)	Unobservable Inputs (Level 3)	Total
		(In $ millions)
As of March 31, 2013
Cost investments	155	—	—	—
Insurance contracts in nonqualified trusts	65	65	—	65
Long-term debt, including current installments of long-term debt	2,982	2,850	245	3,095
As of December 31, 2012
Cost investments	156	—	—	—
Insurance contracts in nonqualified trusts	66	66	—	66
Long-term debt, including current installments of long-term debt	2,990	2,886	244	3,130

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 March 31, 2013 and December 31, 2012, 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.

17. 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, prior acquisitions and divestitures, 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 and when determinable, the Company estimates its Possible Loss, 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.

Plumbing Actions

CNA Holdings LLC ("CNA Holdings"), a US subsidiary of the Company, which included the US business now in the Advanced Engineered Materials segment, along with Shell Oil Company ("Shell"), E.I. DuPont de Nemours and Company ("DuPont") and others, has been a defendant in a series of lawsuits, including a number of class actions, alleging that plastic

27

resins manufactured by these companies that were utilized by others in the production of plumbing systems for residential property were defective for this use and/or contributed to the failure of such plumbing. Based on, among other things, the findings of outside experts and the successful use of the Company's acetal copolymer in similar applications, CNA Holdings does not believe the Company's acetal copolymer was defective for this use or contributed to the failure of the plumbing. In addition, in many cases CNA Holdings' potential future exposure may be limited by, among other things, statutes of limitations and repose.

In November 1995, CNA Holdings, DuPont and Shell entered into national class action settlements in the Cox, et al. v. Hoechst Celanese Corporation, et al., No. 94-0047 (Chancery Ct., Obion County, Tennessee) matter. The time to file claims against the class has expired and the entity established by the court to administer the claims was dissolved in September 2010. In addition between 1995 and 2001, CNA Holdings was named as a defendant in various putative class actions. The majority of these actions have now been dismissed. The dismissal of the remaining US case (St. Croix, Ltd., et al. v. Shell Oil Company d/b/a Shell Chemical Company, Case No. XC-97-CR-467, Virgin Islands Superior Court) was appealed in 2011. Oral argument for the appeal took place on December 13, 2012 and a decision on the appeal is expected in 2013.

As of March 31, 2013, the class actions in Canada are subject to a pending class settlement that would result in a dismissal of those cases. The Company does not believe the Possible Loss associated with the remaining matters is material. During the three months ended March 31, 2013, the Company did not record any recoveries or reductions in legal reserves related to plumbing actions to Other (charges) gains, net (Note 13) in the unaudited interim consolidated statements of operations.

Polyester Staple Antitrust Litigation

CNA Holdings, the successor in interest to Hoechst Celanese Corporation ("HCC"), Celanese Americas Corporation and Celanese GmbH (collectively, the "Celanese Entities") and Hoechst, the former parent of HCC, were named as defendants in two actions (involving multiple individual participants) filed in September 2006 by US purchasers of polyester staple fibers manufactured and sold by HCC. The actions alleged that the defendants participated in a conspiracy to fix prices, rig bids and allocate customers of polyester staple sold in the US. These actions were consolidated in a proceeding by a Multi-District Litigation Panel in the US District Court for the Western District of North Carolina styled In re Polyester Staple AntitrustLitigation, MDL 1516. On June 12, 2008 the court dismissed these actions with prejudice against all Celanese Entities in consideration of a payment by the Company. This proceeding related to sales by the polyester staple fibers business which Hoechst sold to KoSa B.V., f/k/a Arteva B.V., a subsidiary of Koch Industries, Inc. ("KoSa") in 1998. In November 2003, KoSa sought recovery from the Company (Koch Industries, Inc. et al. v. Hoechst Aktiengesellschaft et al., No. 03-cv-8679 Southern District NY) alleging a variety of claims, including indemnification and breach of representations, arising out of the 1998 sale. During the fourth quarter of 2010, the parties settled the case pursuant to a confidential agreement and the case was dismissed with prejudice.

Prior to December 31, 2008, the Company had entered into tolling arrangements with four other alleged US purchasers of polyester staple fibers manufactured and sold by the Celanese Entities. These purchasers were not included in the settlement and one such company filed suit against the Company in December 2008 (Milliken & Company v.CNA Holdings, Inc., Celanese Americas Corporation and Hoechst AG (No. 8-SV-00578 W.D.N.C.)). On September 15, 2011, the case was dismissed with prejudice based on a stipulation and proposed order of voluntary dismissal. One of the alleged US purchasers made a demand to Celanese in February 2013 but has not filed a formal claim. The Company is evaluating its options, but does not believe a Possible Loss for this matter would be material.

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. The Company filed its answer on August 8, 2012. Linde is seeking damages in the amount of $38 million for the period ended December 31, 2012, in addition to other unspecified damages. The Company believes that Linde Gas' claims lack merit and that the Company has complied with the contract terms and is vigorously defending the matter. Based on the Company's evaluation of currently available information, the Company does not believe the Possible Loss is material. The arbitral panel has bifurcated the case into a liability and damages phase and set hearing dates for all liability issues in June 2013 and for all damages issues, if necessary, in December 2013.

28

Award Proceedings in Relation to Domination Agreement and Squeeze-Out

The Company's subsidiary, BCP Holdings GmbH ("BCP Holdings"), a German limited liability company, is a defendant in two special award proceedings initiated by minority stockholders of Celanese GmbH seeking the court's review of the amounts (i) of the fair cash compensation and of the guaranteed dividend offered in the purchaser offer under the 2004 Domination Agreement (the "Domination Agreement") and (ii) the fair cash compensation paid for the 2006 squeeze-out ("Squeeze-Out") of all remaining stockholders of Celanese GmbH.

Pursuant to a settlement agreement between BCP Holdings and certain former Celanese GmbH stockholders, if the court sets a higher value for the fair cash compensation or the guaranteed payment under the Domination Agreement or the Squeeze-Out compensation, former Celanese GmbH stockholders who ceased to be stockholders of Celanese GmbH due to the Squeeze-Out will be entitled to claim for their shares the higher of the compensation amounts determined by the court in these different proceedings related to the Domination Agreement and the Squeeze-Out. If the fair cash compensation determined by the court is higher than the Squeeze-Out compensation of €66.99, then 1,069,465 shares will be entitled to an adjustment. If the court determines the value of the fair cash compensation under the Domination Agreement to be lower than the original Squeeze-Out compensation, but determines a higher value for the Squeeze-Out compensation, 924,078 shares would be entitled to an adjustment. Payments already received by these stockholders as compensation for their shares will be offset so that persons who ceased to be stockholders of Celanese GmbH due to the Squeeze-Out are not entitled to more than the higher of the amount set in the two court proceedings.

In September 2011, the share valuation expert appointed by the court rendered an opinion. The expert opined that the fair cash compensation for these stockholders (145,387 shares) should be increased from €41.92 to €51.86. This non-binding opinion recommends a total increase in share value of €2 million for those claims under the Domination Agreement. The opinion has no effect on the Squeeze-Out proceeding because the share price recommended is lower than the price those stockholders already received in the Squeeze-Out. However, the opinion also advocates that the guaranteed dividend should be increased from €2.89 to €3.79, aggregating an increase in total guaranteed dividends of €1 million to the Squeeze-Out claimants. The Company and plaintiffs submitted written responses arguing for alternative valuations during the three months ended December 31, 2011. On March 27, 2013, the expert issued his supplementary opinion affirming his previous calculations. The Company anticipates the court setting a hearing date to take place in the second half of 2013. No hearing date has been set. Separately, no expert has yet been appointed in the Squeeze-Out proceedings.

For those claims brought under the Domination Agreement, based on the Company's evaluation of currently available information, including the non-binding expert opinions, and the fact that the court has not yet determined the applicable valuation method, which could increase or decrease the Company's potential exposure, the Company does not believe that the Possible Loss is material.

For those remaining claims brought by the Squeeze-Out claimants, based on the Company's evaluation of currently available information, including that damages sought are unspecified, unsupported or uncertain, the matter presents meaningful legal uncertainties (including novel issues of law and the applicable valuation method), there are significant facts in dispute and the court has not yet appointed an expert, the Company cannot estimate the Possible Loss, if any, at this time.

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).

29

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 March 31, 2013 are $62 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, ranging from one year to thirty years. The aggregate amount of outstanding indemnifications and guarantees provided for under these agreements is $132 million as of March 31, 2013. 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 March 31, 2013, the Company had unconditional purchase obligations of $3.3 billion which extend through 2034.

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 variable interest entities ("VIEs") as of March 31, 2013 relates primarily to early contract termination fees.

30

The Company's carrying value of assets and liabilities associated with its obligations to VIEs, as well as the maximum exposure to loss relating to these VIEs are as follows:

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Property, plant and equipment, net	116	118
Trade payables	43	41
Current installments of long-term debt	7	7
Long-term debt	139	140
Total	189	188
Maximum exposure to loss	273	273

The difference between the total obligations to VIEs and the maximum exposure to loss, primarily represents take-or-pay obligations for services included within the unconditional obligations discussed above.

18. Segment Information

	Advanced Engineered Materials		Consumer Specialties			Industrial Specialties		Acetyl Intermediates			Other Activities		Eliminations		Consolidated
	(In $ millions)
	Three Months Ended March 31, 2013
Net sales	329		295		(1)	288		808		(1)	—		(115	)	1,605
Other (charges) gains, net	(2	)	—			(1	)	(1	)		—		—		(4	)
Operating profit (loss)	36		78			15		75			(20	)	—		184
Equity in net earnings (loss) of affiliates	40		2			—		3			9		—		54
Depreciation and amortization	29		10			12		21			4		—		76
Capital expenditures	8		14			5		29			1		—		57		(2)
	As of March 31, 2013
Goodwill and intangibles, net	361		271			62		223			—		—		917
Total assets	2,670		1,338			998		2,265			1,797		—		9,068
	Three Months Ended March 31, 2012 - As Adjusted (Note 1)
Net sales	317		264		(1)	309		852		(1)	—		(109	)	1,633
Other (charges) gains, net	—		(1	)		—		—			1		—		—
Operating profit (loss)	24		40			20		62			(35	)	—		111
Equity in net earnings (loss) of affiliates	43		1			—		1			6		—		51
Depreciation and amortization	27		9			15		20			3		—		74
Capital expenditures	7		16			8		31			8		—		70		(2)
	As of December 31, 2012
Goodwill and intangibles, net	372		276			65		229			—		—		942
Total assets	2,703		1,296			963		2,238			1,800		—		9,000

______________________________

⁽¹⁾  Net sales for Acetyl Intermediates and Consumer Specialties include inter-segment sales of $112 million and $3 million, respectively, for the three months endedMarch 31, 2013 and $108 million and $1 million, respectively, for the three months endedMarch 31, 2012.

⁽²⁾  Excludes expenditures related to the relocation of the Company’s POM operations in Germany (Note 20) and includes a decrease in accrued capital expenditures of $17 million and $36 million for the three months endedMarch 31, 2013 and 2012, respectively.

31

19. Earnings (Loss) Per Share

	Three Months Ended March 31,
	2013	2012
		As Adjusted (Note 1)
	(In $ millions, except share and per share data)
Amounts Attributable to Celanese Corporation
Earnings (loss) from continuing operations	141	193
Earnings (loss) from discontinued operations	1	—
Net earnings (loss) available to common stockholders	142	193
Weighted average shares - basic	159,682,386	156,576,896
Dilutive stock options	240,507	1,855,015
Dilutive restricted stock units	278,743	683,321
Weighted average shares - diluted	160,201,636	159,115,232

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 March 31,
	2013	2012
Stock options	93,423	—
Restricted stock units	—	—
Total	93,423	—

20. Plant Relocation

In November 2006, the Company finalized a settlement agreement with the Frankfurt, Germany Airport ("Fraport") that required the Company to cease operations at its Kelsterbach, Germany POM site and sell the site, including land and buildings, to Fraport, resolving several years of legal disputes related to the planned Fraport expansion. Under the original agreement, Fraport agreed to pay the Company a total of €670 million. The agreement requires the Company to complete certain activities no later than December 31, 2013 at which time title to the land and buildings will transfer to Fraport. The agreement did not require the proceeds from the settlement be used to build or relocate the existing POM operations; however, based on a number of factors, the Company built a new expanded production facility in the Frankfurt Hoechst Industrial Park in the Rhine Main area in Germany.

The Company received its final payment from Fraport of €110 million during the three months endedJune 30, 2011 and ceased POM operations at the Kelsterbach, Germany site prior to July 31, 2011. In September 2011, the Company announced the opening of its new POM production facility in Frankfurt Hoechst Industrial Park, Germany.

32

A summary of the financial statement impact associated with the Kelsterbach plant relocation is as follows:

	Three Months Ended March 31,		Total from inception through March 31, 2013
	2013	2012
	(In $ millions)
Deferred proceeds (1)	—	—	907
Costs expensed	2	—	115
Costs capitalized (2)	2	13	1,129
Lease buyout	—	—	22
Employee termination benefits	—	—	8

_____________________________

⁽¹⁾  Included in noncurrent Other liabilities in the consolidated balance sheets. Amounts reflect the US dollar equivalent at the time of receipt. Upon transfer of title to Fraport, the deferred proceeds will be recognized in the consolidated statements of operations. Such proceeds will be reduced by assets of €7 million included in Property, plant and equipment, net and €102 million included in noncurrent Other assets in the consolidated balance sheets, to be transferred to Fraport or otherwise disposed.

⁽²⁾  Includes a decrease in accrued capital expenditures of $1 million and $8 million for the three months endedMarch 31, 2013 and 2012, respectively.

21. Consolidating Guarantor Financial Information

The Senior Notes were issued by Celanese US (the "Issuer") and are guaranteed by Celanese Corporation (the "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 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 three months endedMarch 31, 2013 and 2012 present such intercompany financing activities, contributions and dividends consistent with how such activity would be presented in a stand-alone statement of cash flows. Previously, the Company presented such activity within the category where the ultimate use of cash to third parties was presented in the consolidated statements of cash flow. Prior amounts have been revised to conform to the current presentation.

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.

33

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 March 31, 2013
	Parent Guarantor	Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net sales	—	—		680		1,207		(282	)	1,605
Cost of sales	—	—		(475	)	(1,094	)	297		(1,272	)
Gross profit	—	—		205		113		15		333
Selling, general and administrative expenses	—	—		(21	)	(85	)	—		(106	)
Amortization of intangible assets	—	—		(4	)	(7	)	—		(11	)
Research and development expenses	—	—		(16	)	(10	)	—		(26	)
Other (charges) gains, net	—	—		4		(4	)	(4	)	(4	)
Foreign exchange gain (loss), net	—	—		—		(1	)	—		(1	)
Gain (loss) on disposition of businesses and assets, net	—	—		(1	)	—		—		(1	)
Operating profit (loss)	—	—		167		6		11		184
Equity in net earnings (loss) of affiliates	141	167		37		49		(340	)	54
Interest expense	—	(47	)	(10	)	(16	)	30		(43	)
Refinancing expense	—	—		—		—		—		—
Interest income	—	14		15		1		(30	)	—
Dividend income - cost investments	—	—		—		24		—		24
Other income (expense), net	—	—		—		(1	)	—		(1	)
Earnings (loss) from continuing operations before tax	141	134		209		63		(329	)	218
Income tax (provision) benefit	1	7		(44	)	(37	)	(4	)	(77	)
Earnings (loss) from continuing operations	142	141		165		26		(333	)	141
Earnings (loss) from operation of discontinued operations	—	—		2		—		—		2
Gain (loss) on disposition of discontinued operations	—	—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—	—		(1	)	—		—		(1	)
Earnings (loss) from discontinued operations	—	—		1		—		—		1
Net earnings (loss)	142	141		166		26		(333	)	142
Net (earnings) loss attributable to noncontrolling interests	—	—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	142	141		166		26		(333	)	142

34

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS

	Three Months Ended March 31, 2012
	Parent Guarantor	Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	As Adjusted (Note 1)
	(In $ millions)
Net sales	—	—		640		1,249		(256	)	1,633
Cost of sales	—	—		(478	)	(1,148	)	267		(1,359	)
Gross profit	—	—		162		101		11		274
Selling, general and administrative expenses	—	—		(39	)	(87	)	—		(126	)
Amortization of intangible assets	—	—		(5	)	(8	)	—		(13	)
Research and development expenses	—	—		(15	)	(10	)	—		(25	)
Other (charges) gains, net	—	—		1		(1	)	—		—
Foreign exchange gain (loss), net	—	—		—		1		—		1
Gain (loss) on disposition of businesses and assets, net	—	—		—		—		—		—
Operating profit (loss)	—	—		104		(4	)	11		111
Equity in net earnings (loss) of affiliates	193	207		40		42		(431	)	51
Interest expense	—	(48	)	(11	)	(18	)	32		(45	)
Refinancing expense	—	—		—		—		—		—
Interest income	—	15		16		2		(32	)	1
Dividend income - cost investments	—	—		—		—		—		—
Other income (expense), net	—	1		—		1		—		2
Earnings (loss) from continuing operations before tax	193	175		149		23		(420	)	120
Income tax (provision) benefit	—	18		59		(1	)	(3	)	73
Earnings (loss) from continuing operations	193	193		208		22		(423	)	193
Earnings (loss) from operation of discontinued operations	—	—		—		—		—		—
Gain (loss) on disposition of discontinued operations	—	—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—	—		—		—		—		—
Earnings (loss) from discontinued operations	—	—		—		—		—		—
Net earnings (loss)	193	193		208		22		(423	)	193
Net (earnings) loss attributable to noncontrolling interests	—	—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	193	193		208		22		(423	)	193

35

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2013
	Parent Guarantor		Issuer		Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
Net earnings (loss)	142		141		166	26	(333	)	142
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—	—	—		—
Foreign currency translation	(31	)	(31	)	5	5	21		(31	)
Gain (loss) on interest rate swaps	1		1		—	—	(1	)	1
Pension and postretirement benefits	—		—		—	—	—		—
Total other comprehensive income (loss), net of tax	(30	)	(30	)	5	5	20		(30	)
Total comprehensive income (loss), net of tax	112		111		171	31	(313	)	112
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—	—	—		—
Comprehensive income (loss) attributable to Celanese Corporation	112		111		171	31	(313	)	112

	Three Months Ended March 31, 2012
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	As Adjusted (Note 1)
	(In $ millions)
Net earnings (loss)	193		193		208		22		(423	)	193
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—		—		—		—
Foreign currency translation	26		26		(11	)	(6	)	(9	)	26
Gain (loss) on interest rate swaps	1		1		—		—		(1	)	1
Pension and postretirement benefits	(4	)	(4	)	(3	)	(3	)	10		(4	)
Total other comprehensive income (loss), net of tax	23		23		(14	)	(9	)	—		23
Total comprehensive income (loss), net of tax	216		216		194		13		(423	)	216
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		—		—		—
Comprehensive income (loss) attributable to Celanese Corporation	216		216		194		13		(423	)	216

36

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED CONSOLIDATING BALANCE SHEET

	As of March 31, 2013
	Parent Guarantor	Issuer	Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	—	—	325	653	—		978
Trade receivables - third party and affiliates	—	—	352	720	(156	)	916
Non-trade receivables, net	31	425	1,745	388	(2,392	)	197
Inventories, net	—	—	208	609	(59	)	758
Deferred income taxes	—	—	64	7	(21	)	50
Marketable securities, at fair value	—	—	49	—	—		49
Other assets	—	5	13	36	(16	)	38
Total current assets	31	430	2,756	2,413	(2,644	)	2,986
Investments in affiliates	1,806	3,618	1,616	560	(6,804	)	796
Property, plant and equipment, net	—	—	824	2,462	—		3,286
Deferred income taxes	—	4	515	90	(6	)	603
Other assets	—	1,870	131	429	(1,950	)	480
Goodwill	—	—	305	457	—		762
Intangible assets, net	—	—	68	87	—		155
Total assets	1,837	5,922	6,215	6,498	(11,404	)	9,068
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—	1,570	122	112	(1,692	)	112
Trade payables - third party and affiliates	—	—	231	584	(156	)	659
Other liabilities	—	58	268	408	(275	)	459
Deferred income taxes	—	21	—	25	(21	)	25
Income taxes payable	—	—	471	82	(457	)	96
Total current liabilities	—	1,649	1,092	1,211	(2,601	)	1,351
Noncurrent Liabilities
Long-term debt	—	2,457	904	1,545	(1,947	)	2,959
Deferred income taxes	—	—	—	50	(6	)	44
Uncertain tax positions	2	6	21	151	—		180
Benefit obligations	—	—	1,345	231	—		1,576
Other liabilities	—	4	99	1,031	(11	)	1,123
Total noncurrent liabilities	2	2,467	2,369	3,008	(1,964	)	5,882
Total Celanese Corporation stockholders’ equity	1,835	1,806	2,754	2,279	(6,839	)	1,835
Noncontrolling interests	—	—	—	—	—		—
Total equity	1,835	1,806	2,754	2,279	(6,839	)	1,835
Total liabilities and equity	1,837	5,922	6,215	6,498	(11,404	)	9,068

37

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED CONSOLIDATING BALANCE SHEET

	As of December 31, 2012
	Parent Guarantor	Issuer	Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	10	—	275	674	—		959
Trade receivables - third party and affiliates	—	—	340	653	(166	)	827
Non-trade receivables, net	31	444	1,754	484	(2,504	)	209
Inventories, net	—	—	196	589	(74	)	711
Deferred income taxes	—	—	62	8	(21	)	49
Marketable securities, at fair value	—	—	52	1	—		53
Other assets	—	5	15	27	(16	)	31
Total current assets	41	449	2,694	2,436	(2,781	)	2,839
Investments in affiliates	1,692	3,437	1,579	570	(6,478	)	800
Property, plant and equipment, net	—	—	813	2,537	—		3,350
Deferred income taxes	—	5	509	92	—		606
Other assets	—	1,927	132	414	(2,010	)	463
Goodwill	—	—	305	472	—		777
Intangible assets, net	—	—	69	96	—		165
Total assets	1,733	5,818	6,101	6,617	(11,269	)	9,000
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—	1,584	208	159	(1,783	)	168
Trade payables - third party and affiliates	—	—	269	546	(166	)	649
Other liabilities	—	40	267	475	(307	)	475
Deferred income taxes	—	21	—	25	(21	)	25
Income taxes payable	—	—	419	73	(454	)	38
Total current liabilities	—	1,645	1,163	1,278	(2,731	)	1,355
Noncurrent Liabilities
Long-term debt	—	2,467	872	1,597	(2,006	)	2,930
Deferred income taxes	—	—	—	50	—		50
Uncertain tax positions	3	6	23	149	—		181
Benefit obligations	—	—	1,362	240	—		1,602
Other liabilities	—	8	101	1,055	(12	)	1,152
Total noncurrent liabilities	3	2,481	2,358	3,091	(2,018	)	5,915
Total Celanese Corporation stockholders’ equity	1,730	1,692	2,580	2,248	(6,520	)	1,730
Noncontrolling interests	—	—	—	—	—		—
Total equity	1,730	1,692	2,580	2,248	(6,520	)	1,730
Total liabilities and equity	1,733	5,818	6,101	6,617	(11,269	)	9,000

38

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS

	Three Months Ended March 31, 2013
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net cash provided by (used in) operating activities	1		(18	)	90		76		(2	)	147
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(41	)	(33	)	—		(74	)
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	—		—		—		(3	)	—		(3	)
Return of capital from subsidiary	—		—		—		—		—		—
Contributions to subsidiary	—		—		—		—		—		—
Intercompany loan receipts (disbursements)	—		1		(20	)	—		19		—
Other, net	—		—		(4	)	(6	)	—		(10	)
Net cash provided by (used in) investing activities	—		1		(65	)	(42	)	19		(87	)
Financing Activities
Short-term borrowings (repayments), net	—		20		(9	)	(10	)	(20	)	(19	)
Proceeds from short-term borrowings	—		—		—		24		—		24
Repayments of short-term borrowings	—		—		—		(24	)	—		(24	)
Proceeds from long-term debt	—		—		50		—		—		50
Repayments of long-term debt	—		(2	)	(15	)	(39	)	1		(55	)
Refinancing costs	—		—		—		—		—		—
Purchases of treasury stock, including related fees	—		—		—		—		—		—
Dividends to parent	—		(1	)	(1	)	—		2		—
Contributions from parent	—		—		—		—		—		—
Stock option exercises	1		—		—		—		—		1
Series A common stock dividends	(12	)	—		—		—		—		(12	)
Return of capital to parent	—		—		—		—		—		—
Other, net	—		—		—		—		—		—
Net cash provided by (used in) financing activities	(11	)	17		25		(49	)	(17	)	(35	)
Exchange rate effects on cash and cash equivalents	—		—		—		(6	)	—		(6	)
Net increase (decrease) in cash and cash equivalents	(10	)	—		50		(21	)	—		19
Cash and cash equivalents as of beginning of period	10		—		275		674		—		959
Cash and cash equivalents as of end of period	—		—		325		653		—		978

39

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS

	Three Months Ended March 31, 2012
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net cash provided by (used in) operating activities	23		(3	)	135		106		(46	)	215
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(54	)	(52	)	—		(106	)
Acquisitions, net of cash acquired	—		—		(23	)	—		—		(23	)
Proceeds from sale of businesses and assets, net	—		—		—		—		—		—
Deferred proceeds from Kelsterbach plant relocation	—		—		—		—		—		—
Capital expenditures related to Kelsterbach plant relocation	—		—		—		(21	)	—		(21	)
Return of capital from subsidiary	—		—		—		—		—		—
Contributions to subsidiary	—		—		(3	)	—		3		—
Intercompany loan receipts (disbursements)	—		1		(28	)	—		27		—
Other, net	—		—		(3	)	(2	)	—		(5	)
Net cash provided by (used in) investing activities	—		1		(111	)	(75	)	30		(155	)
Financing Activities
Short-term borrowings (repayments), net	—		28		2		7		(27	)	10
Proceeds from short-term borrowings	—		—		—		24		—		24
Repayments of short-term borrowings	—		—		—		(24	)	—		(24	)
Proceeds from long-term debt	—		—		—		—		—		—
Repayments of long-term debt	—		(3	)	(1	)	(4	)	—		(8	)
Refinancing costs	—		—		—		—		—		—
Purchases of treasury stock, including related fees	(20	)	—		—		—		—		(20	)
Dividends to parent	—		(23	)	(23	)	—		46		—
Contributions from parent	—		—		—		3		(3	)	—
Stock option exercises	7		—		—		—		—		7
Series A common stock dividends	(10	)	—		—		—		—		(10	)
Return of capital to parent	—		—		—		—		—		—
Other, net	—		—		—		—		—		—
Net cash provided by (used in) financing activities	(23	)	2		(22	)	6		16		(21	)
Exchange rate effects on cash and cash equivalents	—		—		—		6		—		6
Net increase (decrease) in cash and cash equivalents	—		—		2		43		—		45
Cash and cash equivalents as of beginning of period	—		—		133		549		—		682
Cash and cash equivalents as of end of period	—		—		135		592		—		727

40

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

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 terms the "Company," "we," "our" and "us," refer to Celanese and its subsidiaries on a consolidated basis. The term "Celanese US" refers to the Company’s subsidiary, Celanese US Holdings LLC, a Delaware limited liability company, and not its subsidiaries.

The following discussion should be read in conjunction with the Celanese Corporation and Subsidiaries consolidated financial statements as of and for the year ended December 31, 2012, filed on February 8, 2013 with the Securities and Exchange Commission ("SEC") as part of the Company’s Annual Report on Form 10-K (the "2012 Form 10-K") and the unaudited interim consolidated financial statements and notes thereto included elsewhere in this Quarterly Report.

Investors are cautioned that the forward-looking statements contained within this Quarterly Report involve both risk and uncertainty. Several important factors could cause actual results to differ materially from those anticipated by these statements. Many of these statements are macroeconomic in nature and are, therefore, beyond the control of management. See "Special Note Regarding Forward-Looking Statements" below and at the beginning of our 2012 Form 10-K.

Special Note Regarding Forward-Looking Statements

Management’s Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") and other parts of this Quarterly Report contain certain forward-looking statements and information relating to us that are based on the beliefs of our management as well as assumptions made by, and information currently available to, us. You can identify these statements by the fact that they do not relate to matters of a strictly factual or historical nature and generally discuss or relate to forecasts, estimates or other expectations regarding future events. Generally, words such as "anticipate," "believe," "estimate," "expect," "intend," "plan," "project," "may," "can," "could," "might," "will" and similar expressions, as they relate to us, are intended to identify forward-looking statements. These statements reflect our current views and beliefs with respect to future events at the time that the statements are made, are not historical facts or guarantees of future performance and are subject to significant risks, uncertainties and other factors that are difficult to predict and many of which are outside of our control. Further, certain forward-looking statements are based upon assumptions as to future events that may not prove to be accurate and, accordingly, should not have undue reliance placed upon them. All forward-looking statements made in this Quarterly Report are made as of the date hereof, and the risk that actual results will differ materially from expectations expressed in this Quarterly Report will increase with the passage of time. We undertake no obligation, and disclaim any duty, to publicly update or revise any forward-looking statements, whether as a result of new information, future events, changes in our expectations or otherwise.

See Part I - Item 1A. Risk Factors of our 2012 Form 10-K and subsequent periodic filings we make with the SEC for a description of risk factors that could significantly affect our financial results. In addition, the following factors could cause our actual results to differ materially from those results, performance or achievements that may be expressed or implied by such forward-looking statements. These factors include, among other things:

• changes in general economic, business, political and regulatory conditions in the countries or regions in which we operate;

• the length and depth of product and industry business cycles particularly in the automotive, electrical, textiles, electronics and construction industries;

• changes in the price and availability of raw materials, particularly changes in the demand for, supply of, and market prices of ethylene, methanol, natural gas, wood pulp and fuel oil and the prices for electricity and other energy sources;

• the ability to pass increases in raw material prices on to customers or otherwise improve margins through price increases;

• the ability to maintain plant utilization rates and to implement planned capacity additions and expansions;

• the ability to reduce or maintain at their current levels production costs and improve productivity by implementing technological improvements to existing plants;

• increased price competition and the introduction of competing products by other companies;

• changes in the degree of intellectual property and other legal protection afforded to our products or technologies, or the theft of such intellectual property;

41

• costs and potential disruption or interruption of production or operations due to accidents, cyber security incidents, terrorism or political unrest, or other unforeseen events or delays in construction of facilities;

• potential liability for remedial actions and increased costs under existing or future environmental regulations, including those relating to climate change;

• potential liability resulting from pending or future litigation, or from changes in the laws, regulations or policies of governments or other governmental activities in the countries in which we operate;

• changes in currency exchange rates and interest rates;

• our level of indebtedness, which could diminish our ability to raise additional capital to fund operations or limit our ability to react to changes in the economy or the chemicals industry; and

• various other factors, both referenced and not referenced in this Quarterly Report.

Many of these factors are macroeconomic in nature and are, therefore, beyond our control. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, our actual results, performance or achievements may vary materially from those described in this Quarterly Report as anticipated, believed, estimated, expected, intended, planned or projected.

Overview

We are a global technology and specialty materials company. We are one of the world’s largest producers of acetyl products, which are intermediate chemicals, for nearly all major industries, as well as a leading global producer of high performance engineered polymers that are used in a variety of high-value applications. As a recognized innovator in the chemicals industry, we engineer and manufacture a wide variety of products essential to everyday living. Our broad product portfolio serves a diverse set of end-use applications including paints and coatings, textiles, automotive applications, consumer and medical applications, performance industrial applications, filter media, paper and packaging, chemical additives, construction, consumer and industrial adhesives, and food and beverage applications. Our products enjoy leading global positions due to our large global production capacity, operating efficiencies, proprietary production technology and competitive cost structures.

Our large and diverse global customer base primarily consists of major companies in a broad array of industries. We hold geographically balanced global positions and participate in diversified end-use applications. We combine a demonstrated track record of execution, strong performance built on shared principles and objectives, and a clear focus on growth and value creation. Known for operational excellence and execution of our business strategies, we deliver value to customers around the globe with best-in-class technologies and solutions.

2013 Highlights:

• We signed a Memorandum of Understanding ("MOU") with Pertamina, the state-owned energy company of the Republic of Indonesia, to begin the detailed project planning phase for the development of fuel ethanol projects in Indonesia. The MOU outlines the parties' intentions to establish a joint venture under which we would own a majority share and would license our leading TCX^® technology to the joint venture under a separate technology licensing agreement. Under the detailed project planning phase of the MOU, we and Pertamina will select the first production location, initiate project permitting and negotiate coal supply and other industrial partner agreements. This phase of the MOU is expected to be completed by the end of 2013.

• We received the JEC Innovation Award for the first thermoplastic composite tailplane for a helicopter. The new composite tailplane of the Agusta Westland AW 169 helicopter results in 15 percent weight reduction from conventional composites and contributes considerably to fuel savings and lower emissions.

• We introduced a new generation of Thermx^® PCT grades that deliver outstanding initial reflectance and reflectance stability under heat and light as required in light-emitting diode ("LED") lighting packages found in display backlight and general lighting.

• We elected Edward G. Galante to our board of directors. Mr. Galante is a former senior vice president of Exxon Mobil Corporation.

42

Results of Operations

Change in accounting policy regarding pension and other postretirement benefits

Effective January 1, 2013, we elected to change our accounting policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for our defined benefit pension plans and other postretirement benefit plans. We now immediately recognize changes in fair value of plan assets and net actuarial gains and losses annually in the fourth quarter of each fiscal year and whenever a plan is determined to qualify for a remeasurement during a fiscal year. The remaining components of net periodic benefit cost are recorded on a quarterly basis. For further discussion, see Note 1 - Description of the Company and Basis of Presentation in the accompanying unaudited interim consolidated financial statements.

In connection with the changes in accounting policy for pension and other postretirement benefits and to properly match the actual operational expenses each business segment is incurring, we changed our allocation of net periodic benefit cost. We now allocate only the service cost and amortization of prior service cost components of our pension and postretirement plans to each business segment on a ratable basis. All other components of net periodic benefit cost (interest cost, estimated return on assets and net actuarial gains and losses) are recorded to Other Activities as these components are considered financing activities managed at the corporate level. Financial information for prior periods has been retrospectively adjusted.

Financial Highlights

	Three Months Ended
	March 31,
	2013		2012		Change
			As Adjusted
	(unaudited)
	(In $ millions)
Statement of Operations Data
Net sales	1,605		1,633		(28	)
Gross profit	333		274		59
Selling, general and administrative expenses	(106	)	(126	)	20
Other (charges) gains, net	(4	)	—		(4	)
Operating profit (loss)	184		111		73
Equity in net earnings of affiliates	54		51		3
Interest expense	(43	)	(45	)	2
Dividend income - cost investments	24		—		24
Earnings (loss) from continuing operations before tax	218		120		98
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	141		193		(52	)
Earnings (loss) from discontinued operations	1		—		1
Net earnings (loss)	142		193		(51	)
Other Data
Depreciation and amortization	76		74		2
Operating margin(1)	11.5	%	6.8	%
Other (charges) gains, net
Employee termination benefits	(2	)	—		(2	)
Kelsterbach plant relocation	(2	)	—		(2	)
Total other (charges) gains, net	(4	)	—		(4	)

______________________________

⁽¹⁾ Defined as operating profit (loss) divided by net sales.

43

	As of March 31, 2013	As of December 31, 2012
	(unaudited)
	(In $ millions)
Balance Sheet Data
Cash and cash equivalents	978	959
Short-term borrowings and current installments of long-term debt - third party and affiliates	112	168
Long-term debt	2,959	2,930
Total debt	3,071	3,098

44

Selected Data by Business Segment

	Three Months Ended
	March 31,
	2013		2012		Change
			As Adjusted
	(unaudited)
	(In $ millions, except percentages)
Net Sales
Advanced Engineered Materials	329		317		12
Consumer Specialties	295		264		31
Industrial Specialties	288		309		(21	)
Acetyl Intermediates	808		852		(44	)
Other Activities	—		—		—
Inter-segment eliminations	(115	)	(109	)	(6	)
Total	1,605		1,633		(28	)
Other (Charges) Gains, Net
Advanced Engineered Materials	(2	)	—		(2	)
Consumer Specialties	—		(1	)	1
Industrial Specialties	(1	)	—		(1	)
Acetyl Intermediates	(1	)	—		(1	)
Other Activities	—		1		(1	)
Total	(4	)	—		(4	)
Operating Profit (Loss)
Advanced Engineered Materials	36		24		12
Consumer Specialties	78		40		38
Industrial Specialties	15		20		(5	)
Acetyl Intermediates	75		62		13
Other Activities	(20	)	(35	)	15
Total	184		111		73
Earnings (Loss) From Continuing Operations Before Tax
Advanced Engineered Materials	76		67		9
Consumer Specialties	104		41		63
Industrial Specialties	15		20		(5	)
Acetyl Intermediates	78		63		15
Other Activities	(55	)	(71	)	16
Total	218		120		98
Depreciation and Amortization
Advanced Engineered Materials	29		27		2
Consumer Specialties	10		9		1
Industrial Specialties	12		15		(3	)
Acetyl Intermediates	21		20		1
Other Activities	4		3		1
Total	76		74		2
Operating Margin
Advanced Engineered Materials	10.9	%	7.6	%
Consumer Specialties	26.4	%	15.2	%
Industrial Specialties	5.2	%	6.5	%
Acetyl Intermediates	9.3	%	7.3	%
Total	11.5	%	6.8	%

45

Factors Affecting Business Segment Net Sales

The percentage increase (decrease) in net sales attributable to each of the factors indicated for each of our business segments is as follows:

Three Months Ended March 31, 2013 Compared to Three Months Ended March 31, 2012

	Volume		Price		Currency	Other	Total
	(unaudited)
	(In percentages)
Advanced Engineered Materials	—		4		—	—	4
Consumer Specialties	5		7		—	—	12
Industrial Specialties	(3	)	(4	)	—	—	(7	)
Acetyl Intermediates	(4	)	(1	)	—	—	(5	)
Total Company	(2	)	—		—	—	(2	)

Consolidated Results – Three Months EndedMarch 31, 2013 Compared with Three Months EndedMarch 31, 2012

Net sales decreased$28 million during the three months endedMarch 31, 2013 compared to the same period in 2012 primarily due to lower volumes and lower pricing in our Acetyl Intermediates and Industrial Specialties segments, partially offset by higher pricing and volumes in our Consumer Specialties segment and higher pricing in our Advanced Engineered Materials segment. Consumer Specialties' net sales increased compared to the prior year period, reflecting higher pricing across all regions for Acetate Products due to continued strong demand and the absence of the temporary production outage that occurred in 2012 at our Narrows, Virginia site that shifted sales later into the year. Our Acetyl Intermediates and Industrial Specialties businesses' volumes decreased as a result of lower global demand and continued weak economic conditions in Europe.

Operating profit increased$73 million, or 66%. Lower raw material costs were a key factor, with ethylene, methanol and carbon monoxide being the key drivers. The increase in operating profit was also a result of lower plant expenses reflecting the cessation of acetate flake and tow production at our Spondon, Derby, United Kingdom facility in November 2012, the absence of the temporary production outage that occurred in 2012 at our Narrows, Virginia site and the benefits of productivity and efficiency initiatives. Selling, general and administrative expenses were also down $20 million primarily due to an $8 million decrease in costs associated with business optimization initiatives and executive compensation and lower pension and other postretirement benefit expenses of $11 million, which are included in Other Activities. As a percentage of net sales, selling, general and administrative expenses decreased from 7.7% to 6.6% for the three months ended March 31, 2013 as compared to the same period in 2012.

Other (charges) gains, net changed $4 million during the three months endedMarch 31, 2013 compared to the same period in 2012 primarily due to $2 million in costs associated with the relocation of our polyoxymethylene, also commonly known as polyacetal ("POM"), operations in Germany, which is included in our Advanced Engineered Materials segment, as well as $2 million of employee termination benefits related to a business optimization project, which is included in our Industrial Specialties and Acetyl Intermediates segments.

Dividend income from cost investments increased $24 million over the same period in 2012 due to the timing of the dividend payments from our China Acetate ventures. Historically, our China Acetate ventures paid a lump sum cash dividend during the three months ended June 30 each year, while in 2013 dividends are expected to be paid quarterly.

Our effective income tax rate for the three months ended March 31, 2013 was 35% compared to (61)% for the three months ended March 31, 2012. The higher effective tax rate for the three months ended March 31, 2013 is attributable to losses in jurisdictions without tax benefit, increased earnings in high income tax jurisdictions and changes regarding the recoverability of deferred tax assets in certain jurisdictions. In 2012 the lower effective tax rate is primarily due to foreign tax credit carryforwards partially offset by deferred tax charges related to changes in assessment regarding permanent reinvestment of certain foreign earnings.

46

Business Segments – Three Months EndedMarch 31, 2013 Compared with Three Months EndedMarch 31, 2012

Advanced Engineered Materials

	Three Months Ended
	March 31,
	2013		2012		Change
			As Adjusted
	(unaudited)
	(In $ millions, except percentages)
Net sales	329		317		12
Net sales variance
Volume	—	%
Price	4	%
Currency	—	%
Other	—	%
Other (charges) gains, net	(2	)	—		(2	)
Operating profit (loss)	36		24		12
Operating margin	10.9	%	7.6	%
Equity in net earnings (loss) of affiliates	40		43		(3	)
Earnings (loss) from continuing operations before tax	76		67		9
Depreciation and amortization	29		27		2

Our Advanced Engineered Materials segment develops, produces and supplies a broad offering of high performance specialty polymers for application in automotive, medical and electronics products, as well as other consumer and industrial applications. Together with our strategic affiliates, our Advanced Engineered Materials segment is a leading participant in the global specialty polymers industry.

Advanced Engineered Materials’ net sales increased$12 million for the three months endedMarch 31, 2013 compared to the same period in 2012 primarily due to higher pricing across all product lines with global product mix, mainly medical applications, being a key factor. Overall volumes remained flat, with volumes increasing slightly in the Americas driven by improvements in the auto industry and in Asia in line with growth in the region, offset by lower volumes in Europe due to the continued weak economic conditions and lower year-over-year automotive builds.

Operating profit increased$12 million for the three months endedMarch 31, 2013 compared to the same period in 2012 primarily due to higher pricing, lower raw material costs, mainly ethylene, methanol and polypropylene, and other expenses, partially offset by higher energy costs.

Earnings (loss) from continuing operations before tax increased$9 million for the three months endedMarch 31, 2013 compared to the same period in 2012, reflecting the increase in operating profit, partially offset by a decrease in equity in net earnings of affiliates of $3 million. Net earnings of affiliates decreased primarily due to lower earnings from our Polyplastics Company Ltd. strategic affiliate.

47

Consumer Specialties

	Three Months Ended
	March 31,
	2013		2012		Change
			As Adjusted
	(unaudited)
	(In $ millions, except percentages)
Net sales	295		264		31
Net sales variance
Volume	5	%
Price	7	%
Currency	—	%
Other	—	%
Other (charges) gains, net	—		(1	)	1
Operating profit (loss)	78		40		38
Operating margin	26.4	%	15.2	%
Equity in net earnings (loss) of affiliates	2		1		1
Dividend income - cost investments	24		—		24
Earnings (loss) from continuing operations before tax	104		41		63
Depreciation and amortization	10		9		1

Our Consumer Specialties segment consists of our Acetate Products and Nutrinova businesses, which serve consumer-driven applications. Our Acetate Products business is a leading producer and supplier of cellulose acetate flake, film and tow, primarily used in filter products applications. Our Nutrinova business is a leading international supplier of premium quality ingredients for the food, beverage and pharmaceuticals industries.

Net sales for Consumer Specialties increased$31 million for the three months endedMarch 31, 2013 as compared to the same period in 2012 primarily due to higher pricing and volumes in our Acetate Products business. With continued strong demand, pricing increased 8% across all regions for Acetate Products while volumes increased 6%, primarily due to the timing of sales in 2013 compared to 2012, with the largest impact in Europe. Acetate Products volumes for the three months endedMarch 31, 2012 were impacted by a temporary production interruption at our Narrows, Virginia Acetate Products facility, shifting volume to later in the year.

Operating profit increased$38 million for the three months endedMarch 31, 2013 primarily due to the increase in pricing and lower spending on plant costs of $16 million, with the absence of the temporary production outage that occurred in 2012 at our Narrows, Virginia site and the cessation of production of acetate flake and tow at our Spondon, Derby, United Kingdom facility in November 2012.

Dividend income from cost investments increased $24 million over the same period in 2012 due to the timing of the dividend payments from our China Acetate ventures. In the prior year, our China Acetate ventures paid a lump sum $83 million dividend during the three months ended June 30, 2012, while in 2013 dividends are expected to be paid quarterly.

48

Industrial Specialties

	Three Months Ended
	March 31,
	2013		2012		Change
			As Adjusted
	(unaudited)
	(In $ millions, except percentages)
Net sales	288		309		(21	)
Net sales variance
Volume	(3	)%
Price	(4	)%
Currency	—	%
Other	—	%
Other (charges) gains, net	(1	)	—		(1	)
Operating profit (loss)	15		20		(5	)
Operating margin	5.2	%	6.5	%
Earnings (loss) from continuing operations before tax	15		20		(5	)
Depreciation and amortization	12		15		(3	)

Our Industrial Specialties segment includes our Emulsions and EVA Performance Polymers businesses. Our Emulsions business is a leading global producer of vinyl acetate-based emulsions and develops products and application technologies to improve performance, create value and drive innovation in applications such as paints and coatings, adhesives, construction, glass fiber, textiles and paper. EVA Performance Polymers is a leading North American manufacturer of a full range of low-density polyethylene and specialty EVA resins and compounds. EVA Performance Polymers products are used in many applications, including flexible packaging films, lamination film products, hot melt adhesives, medical products, automotive, carpeting and photovoltaic cells.

Net sales decreased$21 million for the three months endedMarch 31, 2013 compared to the same period in 2012 reflecting both lower volumes and lower pricing. Volumes were down primarily in our Emulsions business driven by lower demand in North America and Europe, particularly for paper, paint and coating products, as a result of both weak economic conditions and the prolonged winter season in Europe. Pricing declined in our Emulsions business as a result of lower raw material costs, primarily ethylene, while pricing declined in our EVA Performance Polymers business with lower demand being the key driver.

Operating profit decreased$5 million for the three months endedMarch 31, 2013 compared to the same period in 2012 primarily due to lower volumes in our Emulsions business. Lower pricing in both our Emulsions products and our EVA Performance Polymers products was partially offset by lower raw materials of $5 million, primarily ethylene.

49

Acetyl Intermediates

	Three Months Ended
	March 31,
	2013		2012		Change
			As Adjusted
	(unaudited)
	(In $ millions, except percentages)
Net sales	808		852		(44	)
Net sales variance
Volume	(4	)%
Price	(1	)%
Currency	—	%
Other	—	%
Other (charges) gains, net	(1	)	—		(1	)
Operating profit (loss)	75		62		13
Operating margin	9.3	%	7.3	%
Equity in net earnings (loss) of affiliates	3		1		2
Earnings (loss) from continuing operations before tax	78		63		15
Depreciation and amortization	21		20		1

Our Acetyl Intermediates segment produces and supplies acetyl products, including acetic acid, vinyl acetate monomer ("VAM"), acetic anhydride and acetate esters. These products are generally used as starting materials for colorants, paints, adhesives, coatings and medicines. This business segment also produces organic solvents and intermediates for pharmaceutical, agricultural and chemical products.

Acetyl Intermediates’ net sales decreased$44 million during the three months endedMarch 31, 2013 compared to the same period in 2012 as continued challenging economic conditions resulted in lower overall volumes, with volumes down in VAM and other downstream derivatives, and slightly lower pricing across all product lines.

Operating profit increased$13 million during the three months endedMarch 31, 2013 compared to the same period in 2012. The increase in operating profit is primarily due to lower raw material costs of $25 million, mainly carbon monoxide, ethylene and methanol, and lower fixed costs of $6 million, more than offsetting the impact of lower volumes and pricing.

Other Activities

Other Activities primarily consists of corporate center costs, including financing and administrative activities such as legal, accounting and treasury functions, interest income and expense associated with our financing and our captive insurance companies. Other Activities also includes the components of our net periodic benefit cost (interest cost, expected return on assets and net actuarial gains and losses) for our defined benefit pension plans and other post retirement plans not allocated to our business segments. For further discussion see Note 1 - Description of the Company and Basis of Presentation.

Operating loss of $20 million for Other Activities decreased$15 million for the three months endedMarch 31, 2013 compared to the same period in 2012 primarily due to an $8 million decrease in costs associated with business optimization initiatives and executive compensation and lower pension and other postretirement benefit expenses of $11 million, reflecting a favorable change in interest cost and expected return on plan assets.

Liquidity and Capital Resources

Our primary source of liquidity is cash generated from operations, available cash and cash equivalents and dividends from our portfolio of strategic investments. In addition, as of March 31, 2013 we have $50 million available for borrowing under our credit-linked revolving facility and $600 million available under our revolving credit facility to assist, if required, in meeting our working capital needs and other contractual obligations.

While our contractual obligations, commitments and debt service requirements over the next several years are significant, we continue to believe we will have available resources to meet our liquidity requirements, including debt service, for the next twelve months. If our cash flow from operations is insufficient to fund our debt service and other obligations, we may be

50

required to use other means available to us such as increasing our borrowings, reducing or delaying capital expenditures, seeking additional capital or seeking to restructure or refinance our indebtedness. There can be no assurance, however, that we will continue to generate cash flows at or above current levels.

As a result of the National Emission Standard for Hazardous Air Pollutants for Industrial, Commercial, and Institutional Boilers and Process Heaters ("Boiler MACT") regulations discussed in Item 1A. Risk Factors in our 2012 Form 10-K, we will be required to make significant capital expenditures to comply with stricter emissions requirements for industrial boilers and process heaters at our facilities in the next three to four years. In October 2012, we received approval to proceed with replacing the coal-fired boilers at our Narrows, Virginia site with new, natural gas-fired boilers. Our total investment is estimated at over $150 million. We anticipate construction will begin in the first half of 2013 with completion approximately two years later.

In June 2012, we announced our intent to build a new 1.3 million ton per year methanol plant in Clear Lake, Texas. The unit is expected to start up in mid-2015. We are currently evaluating various strategic alternatives that would allow us to share the off-take and minimize our portion of the capital expenditures of this planned facility.

In June 2011, we announced our plans to modify and enhance our existing integrated acetyl facility at the Nanjing Chemical Industrial Park with our TCX^® advanced technology. The unit is expected to startup in mid-2013 with a capacity of approximately 275,000 tons per year. We also intend to construct one, and possibly two, additional industrial ethanol complexes in China, following necessary approvals, utilizing Celanese TCX^® ethanol process technology to help supply applications for the growing Asia region.

In April 2010, we announced that, through our strategic affiliate Ibn Sina, we will construct a 50,000 ton POM production facility in Saudi Arabia. Our pro rata share of invested capital in the POM expansion is expected to total approximately $165 million over a five year period which began in late 2010.

Total cash outflows for capital expenditures, including the specific projects above, are expected to be in the range of $375 million to $400 million in 2013.

On a stand-alone basis, Celanese and its immediate 100% owned subsidiary, Celanese US Holdings LLC ("Celanese US"), have no material assets other than the stock of their subsidiaries and no independent external operations of their own. Accordingly, they generally depend on the cash flow of their subsidiaries and their ability to pay dividends and make other distributions to Celanese and Celanese US in order to meet their obligations, including their obligations under senior credit facilities and senior notes and to pay dividends on Celanese Series A common stock.

Cash Flows

Cash and cash equivalents increased$19 million to $978 million as of March 31, 2013 as compared to December 31, 2012. As of March 31, 2013, $652 million of the $978 million of cash and cash equivalents was held by our foreign subsidiaries. If these funds are needed for our operations in the US, we may be required to accrue and pay US taxes to repatriate these funds. Our intent is to permanently reinvest these funds outside of the US, with the possible exception of funds that have been previously subject to US federal and state taxation. Our current plans do not demonstrate a need to repatriate cash held by our foreign subsidiaries in a taxable transaction to fund our US operations.

• Net Cash Provided by Operating Activities

Cash flow provided by operations decreased$68 million for the three months endedMarch 31, 2013 as compared to the same period in 2012, with operating cash inflows decreasing from $215 million to $147 million. Cash flow provided by operations in 2013 decreased primarily as a result of the absence of a one-time cash dividend received from one of our Asian affiliates during the three months endedMarch 31, 2012 and by a change in trade working capital. The change in trade working capital was primarily impacted by greater increases in trade receivables and inventories than in the prior period. Trade payables also increased during the three months ended March 31, 2013 but not as much as in the same period in 2012. Trade receivables increased primarily due to increases in net sales and timing of collections. Inventories increased primarily due to increases in production and in-transit inventories. Trade payables increased primarily due to increases in raw material purchases, partially offset by the timing of payments. The increase in cash provided by operations was positively impacted by lower pension plan and other postretirement benefit plan contributions of $47 million made during the three months endedMarch 31, 2013 as compared to the same period in the prior year.

51

Trade working capital is calculated as follows:

	As of March 31, 2013		As of December 31, 2012		As of March 31, 2012		As of December 31, 2011
	(unaudited)
	(In $ millions)
Trade receivables, net	916		827		928		871
Inventories	758		711		753		712
Trade payables - third party and affiliates	(659	)	(649	)	(758	)	(673	)
Trade working capital	1,015		889		923		910

• Net Cash Provided by (Used in) Investing Activities

Net cash used in investing activities decreased$68 million for the three months endedMarch 31, 2013 as compared to the same period in 2012, with cash outflows decreasing from $155 million to $87 million. During the three months endedMarch 31, 2013, capital expenditures relating to the relocation and expansion of our POM production facility in Frankfurt Hoechst Industrial Park, Germany amounted to $3 million, $18 million less than in the same period in 2012.

Cash outflows for capital expenditures, excluding capital expenditures relating to our German POM facility, were $74 million for the three months ended March 31, 2013, $32 million lower than during the same period in 2012. Capital expenditures for the three months ended March 31, 2013 are primarily related to capacity expansions, major investments to reduce future operating costs and environmental and health and safety initiatives. Acquisitions, net of cash acquired, decreased by $23 million with no acquisitions in the three months endedMarch 31, 2013. In 2012, we acquired certain assets from Ashland Inc.

• Net Cash Provided by (Used in) Financing Activities

Net cash used in financing activities increased$14 million for the three months endedMarch 31, 2013. The change in cash used in financing activities is primarily due to $26 million higher net repayments of short-term borrowings and long-term debt, $6 million lower proceeds from stock option exercises, offset by the absence of $20 million in stock repurchase transactions when compared to the same period in 2012.

Debt and Other Obligations

• Senior Notes

In November 2012, Celanese US completed an offering of $500 million in aggregate principal amount of 4.625% senior unsecured notes due 2022 (the "4.625% Notes") in a public offering registered under the Securities Act of 1933, as amended (the "Securities Act"). The 4.625% Notes are guaranteed on a senior unsecured basis by Celanese and each of the domestic subsidiaries of Celanese US that guarantee its obligations under its senior secured credit facilities (the "Subsidiary Guarantors").

The 4.625% Notes were issued under an indenture, dated May 6, 2011, as amended by a second supplemental indenture, dated November 13, 2012 (the "Second Supplemental Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. Celanese US will pay interest on the 4.625% Notes on March 15 and September 15 of each which commenced on March 15, 2013. Prior to November 15, 2022, Celanese US may redeem some or all of the 4.625% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the Second Supplemental Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 4.625% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US.

In May 2011, Celanese US completed an offering of $400 million in aggregate principal amount of 5.875% senior unsecured notes due 2021 (the "5.875% Notes") in a public offering registered under the Securities Act. The 5.875% Notes are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors.

The 5.875% Notes were issued under an indenture and a first supplemental indenture, each dated May 6, 2011 (the "First Supplemental Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. Celanese US pays interest on the 5.875% Notes on June 15 and December 15 of each which commenced on December 15, 2011. Prior to June 15, 2021, Celanese US may redeem some or all of the 5.875% Notes at a

52

redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the First Supplemental Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 5.875% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US.

In September 2010, Celanese US completed the private placement of $600 million in aggregate principal amount of 6.625% senior unsecured notes due 2018 (the "6.625% Notes" and, together with the 4.625% Notes and the 5.875% Notes, collectively the "Senior Notes") under an indenture dated September 24, 2010 (the "Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. In April 2011, Celanese US registered the 6.625% Notes under the Securities Act. Celanese US pays interest on the 6.625% Notes on April 15 and October 15 of each year which commenced on April 15, 2011. The 6.625% Notes are redeemable, in whole or in part, at any time on or after October 15, 2014 at the redemption prices specified in the Indenture. Prior to October 15, 2014, Celanese US may redeem some or all of the 6.625% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 6.625% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US. The 6.625% Notes are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors.

The Indenture and the First and Second Supplemental Indentures 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

In September 2010, Celanese US, Celanese, and certain of the domestic subsidiaries of Celanese US entered into an amendment agreement with the lenders under Celanese US’s existing senior secured credit facilities in order to amend and restate the corresponding Credit Agreement, dated as of April 2, 2007 (as previously amended, the "Existing Credit Agreement", and as amended and restated by the amendment agreement, the "Amended Credit Agreement"). The Amended Credit Agreement consists of the Term C loan facility due 2016, the Term B loan facility due 2014, a $600 million revolving credit facility terminating in 2015 and a $228 million credit-linked revolving facility terminating in 2014.

In May 2011, Celanese US prepaid its outstanding Term B loan facility under the Amended Credit Agreement set to mature in 2014 with an aggregate principal amount of $516 million using proceeds from the 5.875% Notes and cash on hand.

In November 2012, Celanese US prepaid $400 million of its outstanding Term C loan facility under the Amended Credit Agreement set to mature in 2016 using proceeds from the 4.625% Notes.

The balances available for borrowing under the revolving credit facility and the credit-linked revolving facility are as follows:

	As of March 31, 2013
	(unaudited)
	(In $ millions)
Revolving Credit Facility
Borrowings outstanding	—
Letters of credit issued	—
Available for borrowing	600
Credit-Linked Revolving Facility
Borrowings outstanding	100
Letters of credit issued	78
Available for borrowing	50

As a condition to borrowing funds or requesting that letters of credit be issued under the revolving credit facility, our 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, our first lien senior secured leverage ratio must be maintained at or below that threshold while any amounts are outstanding under the revolving credit facility.

53

Our amended first lien senior secured leverage ratios and the borrowing capacity under the revolving credit facility are as follows:

	As of March 31, 2013
	First Lien Senior Secured Leverage Ratio
	Maximum	Estimate	Estimate, If Fully Drawn	Borrowing Capacity
	(unaudited)
				(In $ millions)
First Lien Senior Secured Leverage Ratios	3.90	0.91	1.41	600

The Amended Credit Agreement contains covenants including, but not limited to, restrictions on our 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 $40 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.

We are in compliance with all of the covenants related to our debt agreements as of March 31, 2013.

In anticipation of a possible change in pension accounting policy, in January 2013, the Company entered into a non-material amendment to the Amended Credit Agreement with the effect that certain computations for covenant compliance purposes will be evaluated as if the change in pension accounting policy had not occurred. The amendment also modified the Amended Credit Agreement in other, non-material respects.

Share Capital

Our Board of Directors follows a policy of declaring, subject to legally available funds, a quarterly cash dividend on each share of our Series A Common Stock, par value $0.0001 per share ("Common Stock") unless the Board of Directors, in its sole discretion, determines otherwise. The amount available to pay cash dividends is restricted by our Amended Credit Agreement and the Senior Notes.

Our Board of Directors authorized the repurchase of our Common Stock as follows:

	Authorized Amount
	(unaudited)
	(In $ millions)
February 2008	400
October 2008	100
April 2011	129
October 2012	264
As of March 31, 2013	893

These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. The repurchase program does not have an expiration date.

54

The share repurchase activity pursuant to this authorization is as follows:

	Three Months Ended March 31,				Total From February 2008 Through March 31, 2013
	2013		2012
	(unaudited)
Shares repurchased	—		444,901		13,142,527		(1)
Average purchase price per share	$	—	$	46.34	$	38.14
Amount spent on repurchased shares (in millions)	$	—	$	20	$	501

______________________________

⁽¹⁾  Excludes 5,823 shares withheld from employee to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock is considered outstanding at the time of issuance and therefore, 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 us for compensation programs utilizing our stock and other corporate purposes. We account for treasury stock using the cost method and include treasury stock as a component of stockholders’ equity.

Contractual Obligations

Except as otherwise described in this report, there have been no material revisions outside the ordinary course of business to our contractual obligations as described in our 2012 Form 10-K.

Off-Balance Sheet Arrangements

We have not entered into any material off-balance sheet arrangements.

Critical Accounting Policies and Estimates

Our unaudited interim consolidated financial statements are based on the selection and application of significant accounting policies. The preparation of unaudited interim consolidated financial statements in conformity with US Generally Accepted Accounting Principles ("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. Actual results could differ from those estimates. However, we are not currently aware of any reasonably likely events or circumstances that would result in materially different results.

We describe our significant accounting policies in Note 2, Summary of Accounting Policies, of the Notes to Consolidated Financial Statements included in our 2012 Form 10-K. We discuss our critical accounting policies and estimates in MD&A in our 2012 Form 10-K.

Effective January 1, 2013, we elected to change our policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for our defined benefit pension plans and other postretirement benefit plans. We now immediately recognize changes in the fair value of plan assets and net actuarial gains and losses annually in the fourth quarter of each fiscal year and whenever a plan is determined to qualify for a remeasurement during a fiscal year. The remaining components of our net periodic benefit cost are recorded on a quarterly basis. Our critical accounting policy related to pension accounting is revised as follows. 

• Benefit Obligations

We have pension and other postretirement benefit plans covering substantially all employees who meet eligibility requirements. With respect to its US qualified defined benefit pension plan, minimum funding requirements are determined by the Pension Protection Act of 2006. Various assumptions are used in the calculation of the actuarial valuation of the employee benefit plans. These assumptions include the discount rate, compensation levels, expected long-term rates of return on plan assets and trends in health care costs. In addition to the above mentioned assumptions, actuarial consultants use factors such as withdrawal and mortality rates to estimate the projected benefit obligation. The actuarial assumptions used may differ materially from actual results due to changing market and economic conditions, higher or lower withdrawal rates or longer or shorter life spans of

55

participants. These differences may result in a significant impact to the amount of net periodic benefit cost recorded in future periods.

The amounts recognized in the consolidated financial statements related to pension and other postretirement benefits are determined on an actuarial basis. A significant assumption used in determining our net periodic benefit cost is the expected long-term rate of return on plan assets. As of December 31, 2012, we assumed an expected long-term rate of return on plan assets of 8.5% for the US defined benefit pension plans, which represent approximately 83% and 84% of our fair value of pension plan assets and projected benefit obligation, respectively. On average, the actual return on the US qualified defined pension plans' assets over the long-term (20 years) has exceeded 8.5%.

Another estimate that affects our pension and other postretirement net periodic benefit cost is the discount rate used in the annual actuarial valuations of pension and other postretirement benefit plan obligations. At the end of each year, we determine the appropriate discount rate, used to determine the present value of future cash flows currently expected to be required to settle the pension and other postretirement benefit obligations. The discount rate is generally based on the yield on high-quality corporate fixed-income securities. As of December 31, 2012, we decreased the discount rate to 3.8% from 4.6% as of December 31, 2011 for the US plans.

Other postretirement benefit plans provide medical and life insurance benefits to retirees who meet minimum age and service requirements. The key determinants of the accumulated postretirement benefit obligation ("APBO") are the discount rate and the health care cost trend rate. The health care cost trend rate has a significant effect on the reported amounts of APBO and related expense.

Pension assumptions are reviewed annually on a plan and country-specific basis by third-party actuaries and senior management. Such assumptions are adjusted as appropriate to reflect changes in market rates and outlook. Actuarial gains and losses generated by changes in actuarial assumptions are recognized in net periodic benefit cost annually in the fourth quarter of each fiscal year and whenever a plan is required to be remeasured.

We determine the long-term expected rate of return on plan assets by considering the current target asset allocation, as well as the historical and expected rates of return on various asset categories in which the plans are invested. A single long-term expected rate of return on plan assets is then calculated for each plan as the weighted average of the target asset allocation and the long-term expected rate of return assumptions for each asset category within each plan. Differences between actual rates of return of plan assets and the long-term expected rate of return on plan assets are recognized in net periodic benefit cost annually in the fourth quarter of each fiscal year and whenever a plan is required to be remeasured.

The estimated change in pension and postretirement net periodic benefit costs that would occur in 2013 from a change in the indicated assumptions are as follows:

	Change in Rate		Net Periodic Benefit Costs
			(In $ millions)
US Pension Benefits
Decrease in the discount rate	0.50	%	(8	)
Decrease in the long-term expected rate of return on plan assets(1)	0.50	%	12
US Postretirement Benefits
Decrease in the discount rate	0.50	%	(1	)
Increase in the annual health care cost trend rates	1.00	%	—
Non-US Pension Benefits
Decrease in the discount rate	0.50	%	(1	)
Decrease in the long-term expected rate of return on plan assets	0.50	%	2
Non-US Postretirement Benefits
Decrease in the discount rate	0.50	%	—
Increase in the annual health care cost trend rates	1.00	%	—

______________________________

⁽¹⁾  Excludes nonqualified pension plans.

56

Recent Accounting Pronouncements

See Note 2, Recent Accounting Pronouncements, in the accompanying unaudited interim consolidated financial statements included in this Quarterly Report on Form 10-Q for a discussion of recent accounting pronouncements.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

Market risk for our Company has not changed materially from the foreign exchange, interest rate and commodity risks disclosed in Item 7A. Quantitative and Qualitative Disclosures about Market Risk in our 2012 Form 10-K. See also Note 15, Derivative Financial Instruments, in the accompanying unaudited interim consolidated financial statements for further discussion of our market risk management and the related impact on our financial position and results of operations.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including the Chief Executive Officer and Chief Financial Officer, we have evaluated the effectiveness of our disclosure controls and procedures pursuant to Exchange Act Rule 13a-15(b) as of the end of the period covered by this report. Based on that evaluation, as of March 31, 2013, the Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures are effective.

Changes in Internal Control Over Financial Reporting

During the period covered by this report, there were no changes in our internal control over financial reporting that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

57

PART II — OTHER INFORMATION

Item 1. Legal Proceedings

We are involved in a number of legal and regulatory proceedings, lawsuits and claims incidental to the normal conduct of our business, relating to such matters as product liability, land disputes, contracts, antitrust, intellectual property, workers' compensation, chemical exposure, asbestos exposure, prior acquisitions and divestitures, past waste disposal practices and release of chemicals into the environment. The Company is actively defending those matters where it 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 may not represent the ultimate loss to the Company from legal proceedings. See Note 11, Environmental, and Note 17, Commitments and Contingencies, in the accompanying unaudited interim consolidated financial statements for a discussion of material environmental matters and commitments and contingencies related to legal and regulatory proceedings. There have been no significant developments in the "Legal Proceedings" described in our 2012 Form 10-K other than those disclosed in Note 11, Environmental, and Note 17, Commitments and Contingencies, in the accompanying unaudited interim consolidated financial statements.

Item 1A. Risk Factors

There have been no material changes to the risk factors under Part I, Item 1A of our 2012 Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The table below sets forth information regarding repurchases of our Common Stock during the three months ended March 31, 2013:

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Program	Approximate Dollar Value of Shares Remaining that may be Purchased Under the Program(2)
(unaudited)
January 1-31, 2013	—		$	—	—	$	392,000,000
February 1-28, 2013	—		$	—	—	$	392,000,000
March 1-31, 2013	371	(1)	$	47.15	—	$	392,000,000
Total	371				—

______________________________

⁽¹⁾  Shares withheld from employees to cover their statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock units.

⁽²⁾  Our Board of Directors authorized the repurchase of our Common Stock as follows:

	Authorized Amount
	(In $ millions)
February 2008	400
October 2008	100
April 2011	129
October 2012	264
As of March 31, 2013	893

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

None.

58

Item 6. Exhibits

Exhibit Number
	Description
3.1	Second Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the Annual Report on Form 10-K filed with the SEC on February 11, 2011).
3.2	Third Amended and Restated By-laws, effective as of October 23, 2008 (incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K filed with the SEC on October 29, 2008).
10.1	Amendment No. 1, dated January 23, 2013 among Celanese Corporation, Celanese US Holdings LLC, Celanese Americas LLC, the lenders party thereto, and Deutsche Bank AG, New York Branch, as administrative agent and as collateral agent (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed with the SEC on April 2, 2013).
10.2‡	Form of 2013 Performance-Based Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed with the SEC on February 12, 2013).
10.3‡	Executive Severance Benefits Plan, amended effective February 6, 2013 (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K filed with the SEC on February 12, 2013).
10.4*‡	Agreement and Amendment, dated March 18, 2013, between Celanese Corporation and Douglas M. Madden.
18.1*	Preferability Letter of Independent Registered Public Accounting Firm.
31.1*	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	XBRL Instance Document.
101.SCH*	XBRL Taxonomy Extension Schema Document.
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF*	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB*	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase Document.

*     Filed herewith

‡ Indicates a management contract or compensatory plan or arrangement

59

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

CELANESE CORPORATION
	By:	/s/ MARK C. ROHR
		Mark C. Rohr
		Chairman of the Board of Directors and
		Chief Executive Officer
		Date:	April 19, 2013

By:	/s/ STEVEN M. STERIN
	Steven M. Sterin
	Senior Vice President and
	Chief Financial Officer
	Date:	April 19, 2013

60

EX-10.4

Exhibit 10.4

Agreement and Amendment

Celanese Corporation, its Subsidiaries and its Affiliates (“Employer”), and Douglas M. Madden, his/her heirs, executors, administrators, successors, and assigns (“Executive”), agree that:

1. Last Day of Employment (“Departure Date”). Executive is retiring and the last day of employment with Celanese is: March 31, 2013.

2. Non-competition/Non-solicitation. Executive acknowledges and recognizes the highly competitive nature of the business of Employer. Without the express written permission of Employer, for a period of two (2) years following the Departure Date (the “Restricted Period”), Executive acknowledges and agrees that he/she will not: (i) directly or indirectly solicit sales of like products similar to those produced or sold by Employer; (ii) directly engage or become employed in a function with like responsibilities as at Employer with, or serve on the Board of Directors of, any business that competes with the business of Employer, or has a direct conflict of interest with Employer, including but not limited to: direct sales, marketing, or manufacturing, research and development or product development for a producer of products similar to those produced or licensed by Employer; or (iii) for a period of two (2) years from the Departure Date, directly or indirectly solicit or hire employees of Employer for employment. Provided however, that nothing in this provision shall restrict Executive from owning solely as an investment, publicly traded securities of any company which is engaged in the business of Employer, if Executive (i) is not a controlling person of, or a member of a group which controls; and (ii) does not, directly or indirectly, own 5% or more of any class of securities of any such company.

3. Confidentiality. Executive agrees and recognizes that any knowledge or information of any type whatsoever of a confidential nature relating to the business of Employer or any of its subsidiaries, divisions or affiliates, including, without limitation, all types of trade secrets, client lists or information, Executive lists or information, information regarding product development, marketing plans, management organization, operating policies or manuals, performance results, business plans, financial records, or other financial, commercial, business or technical information (collectively, “Confidential Information”), must be protected as confidential, not copied, disclosed or used other than for the benefit of Employer at any time unless and until such knowledge or information is in the public domain through no wrongful act by Executive. Executive further agrees not to divulge to anyone (other than Employer or any persons employed or designated by Employer), publish or make use of any such Confidential Information without the prior written consent of Employer, except by an order of a court having competent jurisdiction or under subpoena from an appropriate government agency.

4. Future Cooperation after Departure Date. After departure,Executive agrees to make reasonable efforts to assist Employer including but not limited to: assisting with transition duties, assisting with issues that arise after departure of employment and assisting with the defense or prosecution of any lawsuit or claim. This includes but is not limited to responding to telephone calls, providing deposition testimony, attending hearings and testifying on behalf of Employer. Employer will reimburse Executive for reasonable time and expenses in connection with any future cooperation after the Departure Date. Time and expenses can include loss of pay or using vacation time at a future employer. Employer shall reimburse Executive within 30 days of remittance by Executive

1

to Employer of such time and expenses incurred, but in no event later than the end of Executive’s tax year following the tax year in which Executive incurs such time and expenses and the amount of expenses eligible for reimbursement hereunder during Executive’s tax year will not affect the expenses eligible for reimbursement in any other tax year.

5. Consideration. Each separate installment under this Agreement and Amendment (this “Agreement”) shall be treated as a separate payment for purposes of determining whether such payment is subject to or exempt from compliance with the requirements of Section 409A of the Internal Revenue Service Code. In consideration for signing this Agreement and compliance with the promises made herein, Employer and Executive agree:

a. Long Term Equity Awards. Employer will fulfill its obligations to Executive pursuant to the terms of outstanding equity award agreements held by Executive (the “Equity Agreements”), including Employer’s obligations under the Equity Agreements in the event of a change in control. In accordance with the terms of the Equity Agreement, Employer agrees that certain equity awards contained in Executive’s Equity Agreements will receive continued vesting as of the Departure Date by reason of Executive’s qualifying retirement under the retirement provisions included in such awards; certain other awards will be forfeited as a result of Executive’s retirement. In addition, Employer expressly agrees that Executive’s December 20, 2011 time-vesting restricted stock unit award is being amended by this Agreement to allow continued vesting on the applicable vesting dates, notwithstanding Executive’s retirement, as set forth on Exhibit A. Employer has provided a schedule of Executive’s awards and the impact of retirement.

b. Company Benefit Plans. Healthcare & dental coverage and all other normal company programs (e.g., life insurance, LTD, 401K contributions, etc.) will continue until the last day of the month in which Executive departs, according to their current health & dental plan elections, and thereafter at Executive’s expense for the periods, and in accordance with, applicable COBRA provisions.

c. Pension & Retiree Health Care Plan. If Executive is eligible, Employer will fulfill its obligations according to the terms of the respective Plans.

d. Voluntary Resignation. Executive agrees to voluntarily resign from Employer effective on the Departure Date. Effective as of the close of business on such Departure Date, Executive will resign from all positions he holds as a corporate officer of Employer and subsidiaries and Affiliates (including without limitation any positions as an officer, executive and/or director), and from all positions held on behalf of Employer (e.g., external board memberships, joint venture boards, internal committee positions).

e. Return of Company Property. Executive will surrender to Employer on the Departure Date, all company materials, including, if applicable, but not limited to his/her company car, laptop computer, phone, credit card, calling cards, etc. Executive will be responsible for resolving any outstanding balances on the company credit card.

6. No Consideration Absent Execution of this Agreement. Executive understands and agrees that he/she would not receive the consideration specified in Paragraph “5” above, except for the execution of this Agreement and the fulfillment of the promises contained herein.

7. General Release of Claims. Executive knowingly and voluntarily releases and forever discharges, to the full extent permitted by law, Employer of and from any and all claims, known and unknown,

2

asserted and unasserted, Executive has or may have against Employer as of the date of execution of this Agreement, including, but not limited to, any alleged violation of:

• Title VII of the Civil Rights Act of 1964, as amended;

• The Civil Rights Act of 1991;

• Sections 1981 through 1988 of Title 42 of the United States Code, as amended;

• The Employee Retirement Income Security Act of 1974, as amended;

• The Immigration Reform and Control Act, as amended;

• The Americans with Disabilities Act of 1990, as amended;

• The Age Discrimination in Employment Act of 1967, as amended;

• The Workers Adjustment and Retraining Notification Act, as amended;

• The Occupational Safety and Health Act, as amended;

• The Wall Street Reform Act of 2010 (Dodd-Frank);

• The Family Medical Leave Act of 1993;

• The Sarbanes-Oxley Act of 2002;

• The Texas Civil Rights Act, as amended;

• The Texas Minimum Wage Law, as amended;

• Equal Pay Law for Texas, as amended;

• Any other federal, state or local civil or human rights law, including but not limited to any other local, state or federal law, regulation or ordinance in Texas, or any law, regulation or ordinance of a foreign country, including but not limited to the People’s Republic of China, Federal Republic of Germany and the United Kingdom;

• Any public policy, contract, tort, or common law; or

• Any claim for costs, fees, or other expenses including attorneys’ fees incurred in these matters.

8. Affirmations. Executive affirms that he has not filed, caused to be filed, or presently is a party to any claim, complaint, or action against Employer in any forum or form. Provided, however, that the foregoing does not affect any right to file an administrative charge with the Equal Employment Opportunity Commission (“EEOC”), or a charge or complaint under the Wall Street Reform Act of 2010 subject to the restriction, that if any such charge or complaint is filed, Executive agrees not to violate the confidentiality provisions of this Agreement and Executive further agrees and covenants that should he/she or any other person, organization, or other entity file, charge, claim, sue or cause or permit to be filed any charge or claim with the EEOC, the Securities and Exchange Commission (“SEC”), any other governmental body, civil action, suit or legal proceeding against Employer involving any matter occurring at any time in the past, Executive will not seek or accept any personal relief (including, but not limited to, monetary award, recovery, relief or settlement) in such charge, civil action, suit or proceeding.

Executive further affirms that he has reported all hours worked as of the date of this Agreement and has been paid and/or has received all leave (paid or unpaid), compensation, wages, bonuses, commissions, and/or benefits to which he may be entitled and that no other leave (paid or unpaid), compensation, wages, bonuses, commissions and/or benefits are due to him, except as provided in this Agreement. Executive furthermore affirms that he has no known workplace injuries or occupational diseases.

9. Governing Law and Interpretation. This Agreement shall be governed and conformed in accordance with the laws of the state in which Executive was employed on the Departure Date without regard to its conflict of laws provision. In the event Executive or Employer breaches any provision of this Agreement, Executive and Employer affirm that either may institute an action to specifically enforce any term or terms of this Agreement. Should any provision of this Agreement be declared illegal or unenforceable by any court of competent jurisdiction and cannot be modified

3

to be enforceable, excluding the general release language, such provision shall immediately become null and void, leaving the remainder of this Agreement in full force and effect.

10. Nonadmission of Wrongdoing. The parties agree that neither this Agreement nor the furnishing of the consideration for this Release shall be deemed or construed at anytime for any purpose as an admission by Employer of any liability or unlawful conduct of any kind.

11. Non-Disparagement. Executive agrees not to disparage, or make disparaging remarks or send any disparaging communications concerning, Employer, its reputation, its business, and/or its directors, officers, managers. Likewise Employer’s senior management agrees not to disparage, or make any disparaging remark or send any disparaging communication concerning Executive, his/ her reputation and/or business.

12. Injunctive Relief. Executive agrees and acknowledges that Employer will be irreparably harmed by any breach, or threatened breach by him of this Agreement and that monetary damages would be grossly inadequate. Accordingly, he agrees that in the event of a breach, or threatened breach by him of this Agreement, Employer shall be entitled to apply for immediate injunctive or other preliminary or equitable relief, as appropriate, in addition to all other remedies at law or equity.

13. Review Period. Executive is hereby advised that he has up to forty-five (45) calendar days to review this Agreement and to consult with an attorney prior to execution of this Agreement. Executive agrees that any modifications, material or otherwise, made to this Agreement do not restart or affect in any manner the original forty-five (45) calendar day consideration period.

14. Revocation Period. In the event that Executive elects to sign and return to Employer a copy of their Agreement, he/she has a period of seven (7) days (the “Revocation Period”) following the date of such return to revoke this Agreement, which revocation must be in writing and delivered to Employer within the Revocation Period. This Agreement will not be effective or enforceable until the expiration of the Revocation Period.

15. Amendment. This Agreement may not be modified, altered or changed except upon express written consent of both parties wherein specific reference is made to this Agreement.

16. Entire Agreement. This Agreement sets forth the entire agreement between the parties hereto, and fully supersedes any prior obligation of Employer to Executive. Executive acknowledges that he/she has not relied on any representations, promises, or agreements of any kind made to him/her in connection with the decision to accept this Agreement, except for those set forth in this Agreement. Notwithstanding the foregoing, it is expressly understood and agreed that the Equity Agreements and the Long Term Incentive Award Claw Back Agreement executed by Executive shall remain in full force and effect, except as such Equity Agreements are modified and amended by this Agreement.

17. HAVING ELECTED TO EXECUTE THIS AGREEMENT, TO FULFILL THE PROMISES AND TO RECEIVE THE SUMS AND BENEFITS IN PARAGRAPH “5” ABOVE, EXECUTIVE FREELY AND KNOWINGLY, AND AFTER DUE CONSIDERATION, ENTERS INTO THIS AGREEMENT INTENDING TO WAIVE, SETTLE AND RELEASE ALL CLAIMS HE/SHE HAS OR MIGHT HAVE AGAINST EMPLOYER.

4

IN WITNESS WHEREOF, the parties hereto knowingly and voluntarily executed this Agreement as of the date set forth below:

		Celanese Corporation
By:	/s/ Douglas M. Madden	By:	/s/  Joseph J. Fox
	Douglas M. Madden		Name: Joseph Fox
			Title: VP HR & Employment Law
Date:	March 18, 2013	Date:	March 18, 2013

5

Exhibit A

Off-cycle Time RSU Awards
Vesting Period	Target Award	Forfeited RSUs	Remaining Amount (1)	Timing of Payment
Retention Time RSU Awards:
12/20/2011 – 12/20/2013 (2)	8,509	0	8,509	Dec. 2013
12/20/2011 – 12/20/2014 (2)	8,511	0	8,511	Dec. 2014

⁽¹⁾  Actual number of shares to be delivered will be reduced by number of shares withheld for payment of taxes.

⁽²⁾  2011 Off-cycle award – continued vesting by virtue of amendment under this Agreement.

6

EX-18.1

Exhibit 18.1

April 19, 2013

The Board of Directors and Stockholders

Celanese Corporation

Irving, Texas

Ladies and Gentlemen:

We have been furnished with a copy of the quarterly report on Form 10-Q of Celanese Corporation (the Company) for the three months ended March 31, 2013, and have read the Company’s statements contained in Note 1 to the consolidated financial statements included therein. As stated in Note 1, the Company changed its accounting policy for recognizing actuarial gains and losses and changes in the fair value of plan assets and for calculating the expected return on plan assets for its defined benefit pension plans and other postretirement benefit plans and states that the newly adopted accounting policy is preferable in the circumstances because it eliminates the delay in recognizing gains and losses within operating results. In accordance with your request, we have reviewed and discussed with Company officials the circumstances and business judgment and planning upon which the decision to make this change in the method of accounting was based.

We have not audited any financial statements of the Company as of any date or for any period subsequent to December 31, 2012, nor have we audited the information set forth in the aforementioned Note 1 to the consolidated financial statements; accordingly, we do not express an opinion concerning the factual information contained therein.

With regard to the aforementioned accounting change, authoritative criteria have not been established for evaluating the preferability of one acceptable method of accounting over another acceptable method. However, for purposes of the Company’s compliance with the requirements of the Securities and Exchange Commission, we are furnishing this letter.

Based on our review and discussion, with reliance on management’s business judgment and planning, we concur that the newly adopted method of accounting is preferable in the Company’s circumstances.

Very truly yours,

/s/ KPMG LLP

EX-31.1

Exhibit 31.1

CERTIFICATION

PURSUANT TO 17 CFR 240.13a-14

PROMULGATED UNDER

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark C. Rohr, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Celanese Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

/s/  MARK C. ROHR

Mark C. Rohr

Chairman of the Board of Directors and

Chief Executive Officer

Date: April 19, 2013

EX-31.2

Exhibit 31.2

CERTIFICATION

PURSUANT TO 17 CFR 240.13a-14

PROMULGATED UNDER

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven M. Sterin, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Celanese Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

/s/  STEVEN M. STERIN

Steven M. Sterin

Senior Vice President and

Chief Financial Officer

Date: April 19, 2013

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Celanese Corporation (the “Company”) on Form 10-Q for the period ending March 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Mark C. Rohr, Chairman of the Board of Directors and Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  MARK C. ROHR

Mark C. Rohr

Chairman of the Board of Directors and

Chief Executive Officer

Date: April 19, 2013

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Celanese Corporation (the “Company”) on Form 10-Q for the period ending March 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven M. Sterin, Senior Vice President and Chief Financial Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  STEVEN M. STERIN

Steven M. Sterin

Senior Vice President and

Chief Financial Officer

Date: April 19, 2013

XML

Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2013

Stockholders' Equity Note [Abstract]

Schedule of Treasury Stock

Treasury Stock

The Company’s Board of Directors authorized the repurchase of Common Stock as follows:

	Authorized Amount
	(In $ millions)
February 2008	400
October 2008	100
April 2011	129
October 2012	264
As of March 31, 2013	893

The authorization gives management discretion in determining the timing and conditions under which shares may be repurchased. The repurchase program does not have an expiration date.

The share repurchase activity pursuant to this authorization is as follows:

	Three Months Ended March 31,				Total From February 2008 Through March 31, 2013
	2013		2012
Shares repurchased	—		444,901		13,142,527		(1)
Average purchase price per share	$	—	$	46.34	$	38.14
Amount spent on repurchased shares (in millions)	$	—	$	20	$	501

Schedule of Components of Other Comprehensive Income (Loss), Net

Other Comprehensive Income (Loss), Net

	Three Months Ended March 31,
	2013						2012
	Gross Amount		Income Tax (Provision) Benefit		Net Amount		Gross Amount			Income Tax (Provision) Benefit		Net Amount
							As Adjusted (Note 1)
	(In $ millions)
Unrealized gain (loss) on marketable securities	—		—		—		—			—		—
Foreign currency translation	(31	)	—		(31	)	26			—		26
Gain (loss) on interest rate swaps	2		(1	)	1		2			(1	)	1
Pension and postretirement benefits	—		—		—		(1	)	(1)	(3	)	(4	)
Total	(29	)	(1	)	(30	)	27			(4	)	23

______________________________

⁽¹⁾  Amount includes amortization of actuarial losses of $2 million related to the Company's equity method investments' pension plans.

Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss), Net

Adjustments to Accumulated other comprehensive income (loss) are as follows:

	Unrealized Gain (Loss) on Marketable Securities		Foreign Currency Translation		Gain (Loss) on Interest Rate Swaps			Pension and Postretire- ment Benefits			Accumulated Other Comprehensive Income (Loss), Net
	(In $ millions)
As of December 31, 2012 - As Adjusted (Note 1)	(1	)	(23	)	(50	)		(15	)		(89	)
Other comprehensive income before reclassifications	—		(31	)	—			—			(31	)
Amounts reclassified from accumulated other comprehensive income	—		—		2		(1)	—		(2)	2
Income tax (provision) benefit	—		—		(1	)		—			(1	)
As of March 31, 2013	(1	)	(54	)	(49	)		(15	)		(119	)

XML

Description of the Company and Basis of Presentation (Narrative) (Details)	Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidated subsidiaries ownership percentage	100.00%

XML

Consolidating Guarantor Financial Information (Tables)

3 Months Ended

Mar. 31, 2013

Consolidating Guarantor Financial Information [Abstract]

Schedule of Consolidating Statement of Operations

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS

	Three Months Ended March 31, 2013
	Parent Guarantor	Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net sales	—	—		680		1,207		(282	)	1,605
Cost of sales	—	—		(475	)	(1,094	)	297		(1,272	)
Gross profit	—	—		205		113		15		333
Selling, general and administrative expenses	—	—		(21	)	(85	)	—		(106	)
Amortization of intangible assets	—	—		(4	)	(7	)	—		(11	)
Research and development expenses	—	—		(16	)	(10	)	—		(26	)
Other (charges) gains, net	—	—		4		(4	)	(4	)	(4	)
Foreign exchange gain (loss), net	—	—		—		(1	)	—		(1	)
Gain (loss) on disposition of businesses and assets, net	—	—		(1	)	—		—		(1	)
Operating profit (loss)	—	—		167		6		11		184
Equity in net earnings (loss) of affiliates	141	167		37		49		(340	)	54
Interest expense	—	(47	)	(10	)	(16	)	30		(43	)
Refinancing expense	—	—		—		—		—		—
Interest income	—	14		15		1		(30	)	—
Dividend income - cost investments	—	—		—		24		—		24
Other income (expense), net	—	—		—		(1	)	—		(1	)
Earnings (loss) from continuing operations before tax	141	134		209		63		(329	)	218
Income tax (provision) benefit	1	7		(44	)	(37	)	(4	)	(77	)
Earnings (loss) from continuing operations	142	141		165		26		(333	)	141
Earnings (loss) from operation of discontinued operations	—	—		2		—		—		2
Gain (loss) on disposition of discontinued operations	—	—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—	—		(1	)	—		—		(1	)
Earnings (loss) from discontinued operations	—	—		1		—		—		1
Net earnings (loss)	142	141		166		26		(333	)	142
Net (earnings) loss attributable to noncontrolling interests	—	—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	142	141		166		26		(333	)	142

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS

	Three Months Ended March 31, 2012
	Parent Guarantor	Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	As Adjusted (Note 1)
	(In $ millions)
Net sales	—	—		640		1,249		(256	)	1,633
Cost of sales	—	—		(478	)	(1,148	)	267		(1,359	)
Gross profit	—	—		162		101		11		274
Selling, general and administrative expenses	—	—		(39	)	(87	)	—		(126	)
Amortization of intangible assets	—	—		(5	)	(8	)	—		(13	)
Research and development expenses	—	—		(15	)	(10	)	—		(25	)
Other (charges) gains, net	—	—		1		(1	)	—		—
Foreign exchange gain (loss), net	—	—		—		1		—		1
Gain (loss) on disposition of businesses and assets, net	—	—		—		—		—		—
Operating profit (loss)	—	—		104		(4	)	11		111
Equity in net earnings (loss) of affiliates	193	207		40		42		(431	)	51
Interest expense	—	(48	)	(11	)	(18	)	32		(45	)
Refinancing expense	—	—		—		—		—		—
Interest income	—	15		16		2		(32	)	1
Dividend income - cost investments	—	—		—		—		—		—
Other income (expense), net	—	1		—		1		—		2
Earnings (loss) from continuing operations before tax	193	175		149		23		(420	)	120
Income tax (provision) benefit	—	18		59		(1	)	(3	)	73
Earnings (loss) from continuing operations	193	193		208		22		(423	)	193
Earnings (loss) from operation of discontinued operations	—	—		—		—		—		—
Gain (loss) on disposition of discontinued operations	—	—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—	—		—		—		—		—
Earnings (loss) from discontinued operations	—	—		—		—		—		—
Net earnings (loss)	193	193		208		22		(423	)	193
Net (earnings) loss attributable to noncontrolling interests	—	—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	193	193		208		22		(423	)	193

Schedule of Consolidating Statements of Comprehensive Income (Loss)

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2013
	Parent Guarantor		Issuer		Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
Net earnings (loss)	142		141		166	26	(333	)	142
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—	—	—		—
Foreign currency translation	(31	)	(31	)	5	5	21		(31	)
Gain (loss) on interest rate swaps	1		1		—	—	(1	)	1
Pension and postretirement benefits	—		—		—	—	—		—
Total other comprehensive income (loss), net of tax	(30	)	(30	)	5	5	20		(30	)
Total comprehensive income (loss), net of tax	112		111		171	31	(313	)	112
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—	—	—		—
Comprehensive income (loss) attributable to Celanese Corporation	112		111		171	31	(313	)	112

	Three Months Ended March 31, 2012
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	As Adjusted (Note 1)
	(In $ millions)
Net earnings (loss)	193		193		208		22		(423	)	193
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—		—		—		—
Foreign currency translation	26		26		(11	)	(6	)	(9	)	26
Gain (loss) on interest rate swaps	1		1		—		—		(1	)	1
Pension and postretirement benefits	(4	)	(4	)	(3	)	(3	)	10		(4	)
Total other comprehensive income (loss), net of tax	23		23		(14	)	(9	)	—		23
Total comprehensive income (loss), net of tax	216		216		194		13		(423	)	216
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		—		—		—
Comprehensive income (loss) attributable to Celanese Corporation	216		216		194		13		(423	)	216

Schedule of Consolidating Balance Sheet

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED CONSOLIDATING BALANCE SHEET

	As of March 31, 2013
	Parent Guarantor	Issuer	Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	—	—	325	653	—		978
Trade receivables - third party and affiliates	—	—	352	720	(156	)	916
Non-trade receivables, net	31	425	1,745	388	(2,392	)	197
Inventories, net	—	—	208	609	(59	)	758
Deferred income taxes	—	—	64	7	(21	)	50
Marketable securities, at fair value	—	—	49	—	—		49
Other assets	—	5	13	36	(16	)	38
Total current assets	31	430	2,756	2,413	(2,644	)	2,986
Investments in affiliates	1,806	3,618	1,616	560	(6,804	)	796
Property, plant and equipment, net	—	—	824	2,462	—		3,286
Deferred income taxes	—	4	515	90	(6	)	603
Other assets	—	1,870	131	429	(1,950	)	480
Goodwill	—	—	305	457	—		762
Intangible assets, net	—	—	68	87	—		155
Total assets	1,837	5,922	6,215	6,498	(11,404	)	9,068
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—	1,570	122	112	(1,692	)	112
Trade payables - third party and affiliates	—	—	231	584	(156	)	659
Other liabilities	—	58	268	408	(275	)	459
Deferred income taxes	—	21	—	25	(21	)	25
Income taxes payable	—	—	471	82	(457	)	96
Total current liabilities	—	1,649	1,092	1,211	(2,601	)	1,351
Noncurrent Liabilities
Long-term debt	—	2,457	904	1,545	(1,947	)	2,959
Deferred income taxes	—	—	—	50	(6	)	44
Uncertain tax positions	2	6	21	151	—		180
Benefit obligations	—	—	1,345	231	—		1,576
Other liabilities	—	4	99	1,031	(11	)	1,123
Total noncurrent liabilities	2	2,467	2,369	3,008	(1,964	)	5,882
Total Celanese Corporation stockholders’ equity	1,835	1,806	2,754	2,279	(6,839	)	1,835
Noncontrolling interests	—	—	—	—	—		—
Total equity	1,835	1,806	2,754	2,279	(6,839	)	1,835
Total liabilities and equity	1,837	5,922	6,215	6,498	(11,404	)	9,068

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED CONSOLIDATING BALANCE SHEET

	As of December 31, 2012
	Parent Guarantor	Issuer	Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	10	—	275	674	—		959
Trade receivables - third party and affiliates	—	—	340	653	(166	)	827
Non-trade receivables, net	31	444	1,754	484	(2,504	)	209
Inventories, net	—	—	196	589	(74	)	711
Deferred income taxes	—	—	62	8	(21	)	49
Marketable securities, at fair value	—	—	52	1	—		53
Other assets	—	5	15	27	(16	)	31
Total current assets	41	449	2,694	2,436	(2,781	)	2,839
Investments in affiliates	1,692	3,437	1,579	570	(6,478	)	800
Property, plant and equipment, net	—	—	813	2,537	—		3,350
Deferred income taxes	—	5	509	92	—		606
Other assets	—	1,927	132	414	(2,010	)	463
Goodwill	—	—	305	472	—		777
Intangible assets, net	—	—	69	96	—		165
Total assets	1,733	5,818	6,101	6,617	(11,269	)	9,000
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—	1,584	208	159	(1,783	)	168
Trade payables - third party and affiliates	—	—	269	546	(166	)	649
Other liabilities	—	40	267	475	(307	)	475
Deferred income taxes	—	21	—	25	(21	)	25
Income taxes payable	—	—	419	73	(454	)	38
Total current liabilities	—	1,645	1,163	1,278	(2,731	)	1,355
Noncurrent Liabilities
Long-term debt	—	2,467	872	1,597	(2,006	)	2,930
Deferred income taxes	—	—	—	50	—		50
Uncertain tax positions	3	6	23	149	—		181
Benefit obligations	—	—	1,362	240	—		1,602
Other liabilities	—	8	101	1,055	(12	)	1,152
Total noncurrent liabilities	3	2,481	2,358	3,091	(2,018	)	5,915
Total Celanese Corporation stockholders’ equity	1,730	1,692	2,580	2,248	(6,520	)	1,730
Noncontrolling interests	—	—	—	—	—		—
Total equity	1,730	1,692	2,580	2,248	(6,520	)	1,730
Total liabilities and equity	1,733	5,818	6,101	6,617	(11,269	)	9,000

Schedule of Consolidating Statement of Cash Flows

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS

	Three Months Ended March 31, 2013
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net cash provided by (used in) operating activities	1		(18	)	90		76		(2	)	147
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(41	)	(33	)	—		(74	)
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	—		—		—		(3	)	—		(3	)
Return of capital from subsidiary	—		—		—		—		—		—
Contributions to subsidiary	—		—		—		—		—		—
Intercompany loan receipts (disbursements)	—		1		(20	)	—		19		—
Other, net	—		—		(4	)	(6	)	—		(10	)
Net cash provided by (used in) investing activities	—		1		(65	)	(42	)	19		(87	)
Financing Activities
Short-term borrowings (repayments), net	—		20		(9	)	(10	)	(20	)	(19	)
Proceeds from short-term borrowings	—		—		—		24		—		24
Repayments of short-term borrowings	—		—		—		(24	)	—		(24	)
Proceeds from long-term debt	—		—		50		—		—		50
Repayments of long-term debt	—		(2	)	(15	)	(39	)	1		(55	)
Refinancing costs	—		—		—		—		—		—
Purchases of treasury stock, including related fees	—		—		—		—		—		—
Dividends to parent	—		(1	)	(1	)	—		2		—
Contributions from parent	—		—		—		—		—		—
Stock option exercises	1		—		—		—		—		1
Series A common stock dividends	(12	)	—		—		—		—		(12	)
Return of capital to parent	—		—		—		—		—		—
Other, net	—		—		—		—		—		—
Net cash provided by (used in) financing activities	(11	)	17		25		(49	)	(17	)	(35	)
Exchange rate effects on cash and cash equivalents	—		—		—		(6	)	—		(6	)
Net increase (decrease) in cash and cash equivalents	(10	)	—		50		(21	)	—		19
Cash and cash equivalents as of beginning of period	10		—		275		674		—		959
Cash and cash equivalents as of end of period	—		—		325		653		—		978

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS

	Three Months Ended March 31, 2012
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net cash provided by (used in) operating activities	23		(3	)	135		106		(46	)	215
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(54	)	(52	)	—		(106	)
Acquisitions, net of cash acquired	—		—		(23	)	—		—		(23	)
Proceeds from sale of businesses and assets, net	—		—		—		—		—		—
Deferred proceeds from Kelsterbach plant relocation	—		—		—		—		—		—
Capital expenditures related to Kelsterbach plant relocation	—		—		—		(21	)	—		(21	)
Return of capital from subsidiary	—		—		—		—		—		—
Contributions to subsidiary	—		—		(3	)	—		3		—
Intercompany loan receipts (disbursements)	—		1		(28	)	—		27		—
Other, net	—		—		(3	)	(2	)	—		(5	)
Net cash provided by (used in) investing activities	—		1		(111	)	(75	)	30		(155	)
Financing Activities
Short-term borrowings (repayments), net	—		28		2		7		(27	)	10
Proceeds from short-term borrowings	—		—		—		24		—		24
Repayments of short-term borrowings	—		—		—		(24	)	—		(24	)
Proceeds from long-term debt	—		—		—		—		—		—
Repayments of long-term debt	—		(3	)	(1	)	(4	)	—		(8	)
Refinancing costs	—		—		—		—		—		—
Purchases of treasury stock, including related fees	(20	)	—		—		—		—		(20	)
Dividends to parent	—		(23	)	(23	)	—		46		—
Contributions from parent	—		—		—		3		(3	)	—
Stock option exercises	7		—		—		—		—		7
Series A common stock dividends	(10	)	—		—		—		—		(10	)
Return of capital to parent	—		—		—		—		—		—
Other, net	—		—		—		—		—		—
Net cash provided by (used in) financing activities	(23	)	2		(22	)	6		16		(21	)
Exchange rate effects on cash and cash equivalents	—		—		—		6		—		6
Net increase (decrease) in cash and cash equivalents	—		—		2		43		—		45
Cash and cash equivalents as of beginning of period	—		—		133		549		—		682
Cash and cash equivalents as of end of period	—		—		135		592		—		727

XML

Benefit Obligations (Schedule of Company Commitments to Fund Benefit Obligations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Cash Contributions to Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Commitments to fund benefit obligations	$ 9
Commitments to fund benefit obligations, expected	30
Benefit Payments to Nonqualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Commitments to fund benefit obligations	6
Commitments to fund benefit obligations, expected	22
Benefit Payments to Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Commitments to fund benefit obligations	4
Commitments to fund benefit obligations, expected	$ 24

XML

Marketable Securities, at Fair Value (Schedule of Available-for-sale Securities) (Details) (Mutual Funds [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 49	$ 53
Gross unrealized gain	0	0
Gross unrealized loss	0	0
Fair value	$ 49	$ 53

XML

Stockholders' Equity (Narrative) (Details) (Series A Common Stock [Member], USD $)	Mar. 31, 2013
Series A Common Stock [Member]
Class of Stock [Line Items]
Common stock, par value	$ 0.0001

XML

Consolidating Guarantor Financial Information (Schedule of Consolidating Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 978	$ 959	$ 727	$ 682
Trade receivables - third party and affiliates	916	827
Non-trade receivables, net	197	209
Inventories, net	758	711
Deferred income taxes	50	49
Marketable securities, at fair value	49	53
Other assets	38	31
Total current assets	2,986	2,839
Investments in affiliates	796	800
Property, plant and equipment, net	3,286	3,350
Deferred income taxes	603	606
Other assets	480	463
Goodwill	762	777
Intangible assets, net	155	165
Total assets	9,068	9,000
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	112	168
Trade payables - third party and affiliates	659	649
Other liabilities	459	475
Deferred income taxes	25	25
Income taxes payable	96	38
Total current liabilities	1,351	1,355
Noncurrent Liabilities
Long-term debt	2,959	2,930
Deferred income taxes	44	50
Uncertain tax positions	180	181
Benefit obligations	1,576	1,602
Other liabilities	1,123	1,152
Total noncurrent liabilities	5,882	5,915
Total Celanese Corporation stockholders' equity	1,835	1,730
Noncontrolling interests	0	0
Total equity	1,835	1,730
Total liabilities and equity	9,068	9,000
Parent Guarantor [Member]
Current Assets
Cash and cash equivalents	0	10	0	0
Trade receivables - third party and affiliates	0	0
Non-trade receivables, net	31	31
Inventories, net	0	0
Deferred income taxes	0	0
Marketable securities, at fair value	0	0
Other assets	0	0
Total current assets	31	41
Investments in affiliates	1,806	1,692
Property, plant and equipment, net	0	0
Deferred income taxes	0	0
Other assets	0	0
Goodwill	0	0
Intangible assets, net	0	0
Total assets	1,837	1,733
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	0	0
Deferred income taxes	0	0
Income taxes payable	0	0
Total current liabilities	0	0
Noncurrent Liabilities
Long-term debt	0	0
Deferred income taxes	0	0
Uncertain tax positions	2	3
Benefit obligations	0	0
Other liabilities	0	0
Total noncurrent liabilities	2	3
Total Celanese Corporation stockholders' equity	1,835	1,730
Noncontrolling interests	0	0
Total equity	1,835	1,730
Total liabilities and equity	1,837	1,733
Issuer [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Trade receivables - third party and affiliates	0	0
Non-trade receivables, net	425	444
Inventories, net	0	0
Deferred income taxes	0	0
Marketable securities, at fair value	0	0
Other assets	5	5
Total current assets	430	449
Investments in affiliates	3,618	3,437
Property, plant and equipment, net	0	0
Deferred income taxes	4	5
Other assets	1,870	1,927
Goodwill	0	0
Intangible assets, net	0	0
Total assets	5,922	5,818
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	1,570	1,584
Trade payables - third party and affiliates	0	0
Other liabilities	58	40
Deferred income taxes	21	21
Income taxes payable	0	0
Total current liabilities	1,649	1,645
Noncurrent Liabilities
Long-term debt	2,457	2,467
Deferred income taxes	0	0
Uncertain tax positions	6	6
Benefit obligations	0	0
Other liabilities	4	8
Total noncurrent liabilities	2,467	2,481
Total Celanese Corporation stockholders' equity	1,806	1,692
Noncontrolling interests	0	0
Total equity	1,806	1,692
Total liabilities and equity	5,922	5,818
Subsidiary Guarantors [Member]
Current Assets
Cash and cash equivalents	325	275	135	133
Trade receivables - third party and affiliates	352	340
Non-trade receivables, net	1,745	1,754
Inventories, net	208	196
Deferred income taxes	64	62
Marketable securities, at fair value	49	52
Other assets	13	15
Total current assets	2,756	2,694
Investments in affiliates	1,616	1,579
Property, plant and equipment, net	824	813
Deferred income taxes	515	509
Other assets	131	132
Goodwill	305	305
Intangible assets, net	68	69
Total assets	6,215	6,101
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	122	208
Trade payables - third party and affiliates	231	269
Other liabilities	268	267
Deferred income taxes	0	0
Income taxes payable	471	419
Total current liabilities	1,092	1,163
Noncurrent Liabilities
Long-term debt	904	872
Deferred income taxes	0	0
Uncertain tax positions	21	23
Benefit obligations	1,345	1,362
Other liabilities	99	101
Total noncurrent liabilities	2,369	2,358
Total Celanese Corporation stockholders' equity	2,754	2,580
Noncontrolling interests	0	0
Total equity	2,754	2,580
Total liabilities and equity	6,215	6,101
Non-Guarantors [Member]
Current Assets
Cash and cash equivalents	653	674	592	549
Trade receivables - third party and affiliates	720	653
Non-trade receivables, net	388	484
Inventories, net	609	589
Deferred income taxes	7	8
Marketable securities, at fair value	0	1
Other assets	36	27
Total current assets	2,413	2,436
Investments in affiliates	560	570
Property, plant and equipment, net	2,462	2,537
Deferred income taxes	90	92
Other assets	429	414
Goodwill	457	472
Intangible assets, net	87	96
Total assets	6,498	6,617
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	112	159
Trade payables - third party and affiliates	584	546
Other liabilities	408	475
Deferred income taxes	25	25
Income taxes payable	82	73
Total current liabilities	1,211	1,278
Noncurrent Liabilities
Long-term debt	1,545	1,597
Deferred income taxes	50	50
Uncertain tax positions	151	149
Benefit obligations	231	240
Other liabilities	1,031	1,055
Total noncurrent liabilities	3,008	3,091
Total Celanese Corporation stockholders' equity	2,279	2,248
Noncontrolling interests	0	0
Total equity	2,279	2,248
Total liabilities and equity	6,498	6,617
Eliminations [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Trade receivables - third party and affiliates	(156)	(166)
Non-trade receivables, net	(2,392)	(2,504)
Inventories, net	(59)	(74)
Deferred income taxes	(21)	(21)
Marketable securities, at fair value	0	0
Other assets	(16)	(16)
Total current assets	(2,644)	(2,781)
Investments in affiliates	(6,804)	(6,478)
Property, plant and equipment, net	0	0
Deferred income taxes	(6)	0
Other assets	(1,950)	(2,010)
Goodwill	0	0
Intangible assets, net	0	0
Total assets	(11,404)	(11,269)
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	(1,692)	(1,783)
Trade payables - third party and affiliates	(156)	(166)
Other liabilities	(275)	(307)
Deferred income taxes	(21)	(21)
Income taxes payable	(457)	(454)
Total current liabilities	(2,601)	(2,731)
Noncurrent Liabilities
Long-term debt	(1,947)	(2,006)
Deferred income taxes	(6)	0
Uncertain tax positions	0	0
Benefit obligations	0	0
Other liabilities	(11)	(12)
Total noncurrent liabilities	(1,964)	(2,018)
Total Celanese Corporation stockholders' equity	(6,839)	(6,520)
Noncontrolling interests	0	0
Total equity	(6,839)	(6,520)
Total liabilities and equity	$ (11,404)	$ (11,269)

XML

Earnings (Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings (Loss) Per Share

	Three Months Ended March 31,
	2013	2012
		As Adjusted (Note 1)
	(In $ millions, except share and per share data)
Amounts Attributable to Celanese Corporation
Earnings (loss) from continuing operations	141	193
Earnings (loss) from discontinued operations	1	—
Net earnings (loss) available to common stockholders	142	193
Weighted average shares - basic	159,682,386	156,576,896
Dilutive stock options	240,507	1,855,015
Dilutive restricted stock units	278,743	683,321
Weighted average shares - diluted	160,201,636	159,115,232

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 March 31,
	2013	2012
Stock options	93,423	—
Restricted stock units	—	—
Total	93,423	—

XML

Goodwill and Intangible Assets, Net (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Goodwill

	Advanced Engineered Materials		Consumer Specialties		Industrial Specialties		Acetyl Intermediates		Total
	(In $ millions)
As of December 31, 2012
Goodwill	297		249		42		189		777
Accumulated impairment losses	—		—		—		—		—
Net book value	297		249		42		189		777
Exchange rate changes	(4	)	(4	)	(1	)	(6	)	(15	)
As of March 31, 2013
Goodwill	293		245		41		183		762
Accumulated impairment losses	—		—		—		—		—
Net book value	293		245		41		183		762

Schedule of Finite-Lived Intangible Assets, Net

Finite-lived intangibles are as follows:

	Licenses		Customer- Related Intangible Assets		Developed Technology		Covenants Not to Compete and Other		Total
	(In $ millions)
Gross Asset Value
As of December 31, 2012	32		525		30		32		619
Acquisitions	—		—		—		4		4		(1)
Exchange rate changes	—		(11	)	—		—		(11	)
As of March 31, 2013	32		514		30		36		612
Accumulated Amortization
As of December 31, 2012	(16	)	(480	)	(17	)	(23	)	(536	)
Amortization	(1	)	(9	)	(1	)	—		(11	)
Exchange rate changes	—		10		—		—		10
As of March 31, 2013	(17	)	(479	)	(18	)	(23	)	(537	)
Net book value	15		35		12		13		75

______________________________

⁽¹⁾   Weighted average amortization period is 20 years.

Schedule of Indefinite-Lived Intangible Assets, Net

Indefinite-lived intangibles are as follows:

	Trademarks and Trade Names
	(In $ millions)
As of December 31, 2012	82
Acquisitions	—
Exchange rate changes	(2	)
As of March 31, 2013	80

Schedule of Estimated Amortization Expense

Estimated amortization expense for the succeeding five fiscal years is as follows:

	(In $ millions)
2014	21
2015	10
2016	7
2017	6
2018	3

XML

Other (Charges) Gains, Net (Schedule of Other (Charges) Gains, Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restructuring and Related Activities [Abstract]
Employee termination benefits	$ (2)	$ 0
Kelsterbach plant relocation (Note 20)	(2)	0
Total	$ (4)	$ 0

XML

Environmental (US Superfund Sites Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Jun. 08, 2007
Environmental Remediation Obligations [Abstract]
Number of parties included in USEPA order	70
Number of other entities included in NJDEP Action, greater than	200
US Superfund, Passaic River, NJDEP suit, EPA study remedial costs estimate, low		$ 900,000,000
US Superfund, Passaic River, NJDEP suit, EPA study remedial costs estimate, high		$ 2,300,000,000
US Superfund, Passaic River, Company ultimate contribution, percentage estimate	less than approximately 1% to 2%

XML

Fair Value Measurements (Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	$ (18)	$ (23)
Interest rate swaps	(4)	(8)
Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, at fair value	49	53
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	54	55
Total liabilities	(22)	(31)
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	49	53
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	5	2
Total liabilities	(22)	(31)
Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, at fair value	49	53
Fair Value, Measurements, Recurring [Member] | Mutual Funds [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]
Marketable securities, at fair value	49	53
Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	(10)	(10)
Interest rate swaps	(4)	(7)
Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [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
Interest rate swaps	0	0
Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	(10)	(10)
Interest rate swaps	(4)	(7)
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	(5)	(5)
Interest rate swaps		(1)
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Swap [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
Interest rate swaps		0
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	(5)	(5)
Interest rate swaps		(1)
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Foreign Currency Forwards and Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency forwards and swaps	5	2
Foreign currency forwards and swaps	(3)	(8)
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Foreign Currency Forwards and Swaps [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
Foreign currency forwards and swaps	0	0
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Foreign Currency Forwards and Swaps [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	2
Foreign currency forwards and swaps	$ (3)	$ (8)

XML

Goodwill and Intangible Assets, Net (Schedule of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Goodwill
Exchange rate changes	$ (15)
Goodwill	762	777
Accumulated impairment losses	0	0
Net book value	762	777
Advanced Engineered Materials [Member]
Goodwill
Exchange rate changes	(4)
Goodwill	293	297
Accumulated impairment losses	0	0
Net book value	293	297
Consumer Specialties [Member]
Goodwill
Exchange rate changes	(4)
Goodwill	245	249
Accumulated impairment losses	0	0
Net book value	245	249
Industrial Specialties [Member]
Goodwill
Exchange rate changes	(1)
Goodwill	41	42
Accumulated impairment losses	0	0
Net book value	41	42
Acetyl Intermediates [Member]
Goodwill
Exchange rate changes	(6)
Goodwill	183	189
Accumulated impairment losses	0	0
Net book value	$ 183	$ 189

XML

Stockholders' Equity (Schedule of Components of Other Comprehensive Income (Loss), Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Stockholders' Equity Note [Abstract]
Unrealized gain (loss) on marketable securities, gross amount	$ 0	$ 0
Unrealized gain (loss) on marketable securities, income tax (provision) benefit	0	0
Unrealized gain (loss) on marketable securities, net amount	0	0
Foreign currency translation, gross amount	(31)	26
Foreign currency translation, income tax (provision) benefit	0	0
Foreign currency translation, net amount	(31)	26
Gain (loss) on interest rate swaps, gross amount	2	2
Gain (loss) on interest rate swaps, income tax (provision) benefit	(1)	(1)
Gain (loss) on interest rate swaps, net amount	1	1
Pension and postretirement benefits, gross amount	0	(1)	[1],[2]
Pension and postretirement benefits, income tax (provision) benefit	0	(3)	[1]
Pension and postretirement benefits, net amount	0	(4)	[1]
Total other comprehensive income (loss), gross amount	(29)	27	[1]
Total other comprehensive income (loss), income tax (provision) benefit	(1)	(4)	[1]
Total other comprehensive income (loss), net of tax	(30)	23	[1]
Actuarial Gain (Loss) from Equity Method Investee	$ (2)

[1] As Adjusted (Note 1)

[2] Amount includes amortization of actuarial losses of $2 million related to the Company's equity method investments' pension plans.

XML

Derivative Financial Instruments (Schedule of Changes in Fair Value of Derivatives) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	$ 0		$ (1)
Gain (loss) recognized in Earnings (loss)	1		(7)
Tax expense recognized in Other comprehensive income (loss)	1		4	[1]
Foreign Currency Forwards and Swaps [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0		0
Interest Rate Swap [Member]
Derivative [Line Items]
Tax expense recognized in Other comprehensive income (loss)	1		1
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0	[2]	(1)	[2]
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0		0
Interest Expense [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	(4)	[3]	(3)	[3]
Interest Expense [Member] | Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	2	[4]	0	[4]
Foreign Currency Gain (Loss) [Member] | Foreign Currency Forwards and Swaps [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	$ 3	[5]	$ (4)	[5]

[1] As Adjusted (Note 1)

[2] Amount excludes $1 million of tax expense recognized in Other comprehensive income (loss).

[3] Amount represents reclassification from Accumulated other comprehensive income (loss), net and is included in Interest expense in the unaudited interim consolidated statements of operations.

[4] Included in Interest expense 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.

XML

Other (Charges) Gains, Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Other (Charges) Gains, Net [Line Items]
Employee termination benefits	$ 2	$ 0
Business Optimization [Member]
Other (Charges) Gains, Net [Line Items]
Employee termination benefits	$ 2

XML

Derivative Financial Instruments (Schedule of Offsetting Assets) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivative Assets [Abstract]
Gross amount recognized	$ 5	$ 2
Gross amount offset in the consolidated balance sheets	0	0
Net amount presented in the consolidated balance sheets	5	2
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	$ 4	$ 0

XML

Stockholders' Equity (Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss), Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2012	$ (89)	[1]
Other comprehensive income, before reclassifications	(31)
Amounts reclassified from accumulated other comprehensive income	2
Income tax (provision) benefit	(1)		(4)	[1]
As of March 31, 2013	(119)
Unrealized Gain (Loss) on Marketable Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2012	(1)
Other comprehensive income, before reclassifications	0
Amounts reclassified from accumulated other comprehensive income	0
Income tax (provision) benefit	0
As of March 31, 2013	(1)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2012	(23)
Other comprehensive income, before reclassifications	(31)
Amounts reclassified from accumulated other comprehensive income	0
Income tax (provision) benefit	0
As of March 31, 2013	(54)
Gain (Loss) on Interest Rate Swaps [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2012	(50)
Other comprehensive income, before reclassifications	0
Amounts reclassified from accumulated other comprehensive income	2	[2]
Income tax (provision) benefit	(1)
As of March 31, 2013	(49)
Pension and Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2012	15	[1]
Other comprehensive income, before reclassifications	0
Amounts reclassified from accumulated other comprehensive income	0	[3]
Income tax (provision) benefit	0
As of March 31, 2013	$ 15

[1] As Adjusted (Note 1)

[2] This accumulated other comprehensive income component is related to interest rate swaps and is included in interest expense (Note 15).

[3] This accumulated other comprehensive income component is the amortization of prior service cost included in net periodic benefit cost (Note 10).

XML

Benefit Obligations (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Contributions to multiemployer defined benefit plan	$ 2

XML

Segment Information

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Segment Information

Segment Information

	Advanced Engineered Materials		Consumer Specialties			Industrial Specialties		Acetyl Intermediates			Other Activities		Eliminations		Consolidated
	(In $ millions)
	Three Months Ended March 31, 2013
Net sales	329		295		(1)	288		808		(1)	—		(115	)	1,605
Other (charges) gains, net	(2	)	—			(1	)	(1	)		—		—		(4	)
Operating profit (loss)	36		78			15		75			(20	)	—		184
Equity in net earnings (loss) of affiliates	40		2			—		3			9		—		54
Depreciation and amortization	29		10			12		21			4		—		76
Capital expenditures	8		14			5		29			1		—		57		(2)
	As of March 31, 2013
Goodwill and intangibles, net	361		271			62		223			—		—		917
Total assets	2,670		1,338			998		2,265			1,797		—		9,068
	Three Months Ended March 31, 2012 - As Adjusted (Note 1)
Net sales	317		264		(1)	309		852		(1)	—		(109	)	1,633
Other (charges) gains, net	—		(1	)		—		—			1		—		—
Operating profit (loss)	24		40			20		62			(35	)	—		111
Equity in net earnings (loss) of affiliates	43		1			—		1			6		—		51
Depreciation and amortization	27		9			15		20			3		—		74
Capital expenditures	7		16			8		31			8		—		70		(2)
	As of December 31, 2012
Goodwill and intangibles, net	372		276			65		229			—		—		942
Total assets	2,703		1,296			963		2,238			1,800		—		9,000

______________________________

⁽¹⁾  Net sales for Acetyl Intermediates and Consumer Specialties include inter-segment sales of $112 million and $3 million, respectively, for the three months endedMarch 31, 2013 and $108 million and $1 million, respectively, for the three months endedMarch 31, 2012.

⁽²⁾  Excludes expenditures related to the relocation of the Company’s POM operations in Germany (Note 20) and includes a decrease in accrued capital expenditures of $17 million and $36 million for the three months endedMarch 31, 2013 and 2012, respectively.

XML

Description of the Company and Basis of Presentation (Schedule of Changes in Accounting Policy Regarding Pension and Other Postretirement Benefits - Consolidated Statements of Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)	$ 142	$ 193	[1]
Pension and postretirement benefits	0	(4)	[1]
Total other comprehensive income (loss), net of tax	(30)	23	[1]
Total comprehensive income (loss), net of tax	112	216	[1]
Comprehensive income (loss) attributable to Celanese Corporation	112	216	[1]
As Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)		183
Pension and postretirement benefits		6
Total other comprehensive income (loss), net of tax		33
Total comprehensive income (loss), net of tax		216
Comprehensive income (loss) attributable to Celanese Corporation		216
Effect of Change [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)		10
Pension and postretirement benefits		(10)
Total other comprehensive income (loss), net of tax		(10)
Total comprehensive income (loss), net of tax		0
Comprehensive income (loss) attributable to Celanese Corporation		$ 0

[1] As Adjusted (Note 1)

XML

Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2013

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 March 31, 2013
Notional Value	Effective Date	Expiration Date	Fixed Rate (1)
(In $ millions)
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).

As of December 31, 2012
Notional Value	Effective Date	Expiration Date	Fixed Rate (1)
(In $ millions)
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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Total	802	902

Schedule of Changes in Fair Value of Derivatives

Information regarding changes in the fair value of the Company’s derivative arrangements is as follows:

	Three Months Ended					Three Months Ended
	March 31, 2013					March 31, 2012
	Gain (Loss) Recognized in Other Comprehensive Income (Loss)		Gain (Loss) Recognized in Earnings (Loss)			Gain (Loss) Recognized in Other Comprehensive Income (Loss)			Gain (Loss) Recognized in Earnings (Loss)
	(In $ millions)
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	—	(1)	(4	)	(2)	(1	)	(3)	(3	)	(2)
Derivatives Not Designated as Hedges
Interest rate swaps	—		2		(4)	—			—		(4)
Foreign currency forwards and swaps	—		3		(5)	—			(4	)	(5)
Total	—		1			(1	)		(7	)

______________________________

⁽¹⁾  Amount excludes $1 million of tax expense recognized in Other comprehensive income (loss).

⁽²⁾  Amount represents reclassification from Accumulated other comprehensive income (loss), net and is included in Interest expense in the unaudited interim consolidated statements of operations.

⁽³⁾  Amount excludes $1 million of tax expense recognized in Other comprehensive income (loss).

⁽⁴⁾  Included in Interest expense 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.

Offsetting Assets

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Derivative Assets
Gross amount recognized	5	2
Gross amount offset in the consolidated balance sheets	—	—
Net amount presented in the consolidated balance sheets	5	2
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	4	—

Offsetting Liabilities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Derivative Liabilities
Gross amount recognized	23	32
Gross amount offset in the consolidated balance sheets	1	1
Net amount presented in the consolidated balance sheets	22	31
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	21	29

XML

Stockholders' Equity (Schedule of Treasury Stock) (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended				3 Months Ended		62 Months Ended
	Oct. 31, 2012	Apr. 30, 2011	Oct. 31, 2008	Feb. 29, 2008	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013
Class of Stock [Line Items]
Share repurchase plan, authorized repurchase amount	$ 264	$ 129	$ 100	$ 400			$ 893
Shares repurchased					0	444,901	13,142,527	[1]
Average purchase price per share					$ 0.00	$ 46.34	$ 38.14
Amount spent on repurchased shares					$ 0	$ 20	$ 501
Restricted Stock [Member]
Class of Stock [Line Items]
Shares withheld, tax withholding							5,823

[1] Excludes 5,823 shares withheld from employee to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock is considered outstanding at the time of issuance and therefore, the shares withheld are treated as treasury shares.

XML

Segment Information (Schedule of Business Segments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 1,605		$ 1,633
Other (charges) gains, net	(4)		0
Operating profit (loss)	184		111	[1]
Equity in net earnings (loss) of affiliates	54		51
Depreciation and amortization	76		74
Capital expenditures	57	[2]	70	[2]
Goodwill and intangible assets, net	917				942
Total assets	9,068				9,000
Increase (decrease) in accrued capital expenditures	(17)		(36)
Advanced Engineered Materials [Member]
Segment Reporting Information [Line Items]
Net sales	329		317
Other (charges) gains, net	(2)		0
Operating profit (loss)	36		24	[1]
Equity in net earnings (loss) of affiliates	40		43
Depreciation and amortization	29		27
Capital expenditures	8		7
Goodwill and intangible assets, net	361				372
Total assets	2,670				2,703
Consumer Specialties [Member]
Segment Reporting Information [Line Items]
Net sales	295	[3]	264	[3]
Other (charges) gains, net	0		(1)
Operating profit (loss)	78		40	[1]
Equity in net earnings (loss) of affiliates	2		1
Depreciation and amortization	10		9
Capital expenditures	14		16
Goodwill and intangible assets, net	271				276
Total assets	1,338				1,296
Inter-segment sales	3		1
Industrial Specialties [Member]
Segment Reporting Information [Line Items]
Net sales	288		309
Other (charges) gains, net	(1)		0
Operating profit (loss)	15		20	[1]
Equity in net earnings (loss) of affiliates	0		0
Depreciation and amortization	12		15
Capital expenditures	5		8
Goodwill and intangible assets, net	62				65
Total assets	998				963
Acetyl Intermediates [Member]
Segment Reporting Information [Line Items]
Net sales	808	[3]	852	[3]
Other (charges) gains, net	(1)		0
Operating profit (loss)	75		62	[1]
Equity in net earnings (loss) of affiliates	3		1
Depreciation and amortization	21		20
Capital expenditures	29		31
Goodwill and intangible assets, net	223				229
Total assets	2,265				2,238
Inter-segment sales	112		108
Other Activities [Member]
Segment Reporting Information [Line Items]
Net sales	0		0
Other (charges) gains, net	0		1
Operating profit (loss)	(20)		(35)	[1]
Equity in net earnings (loss) of affiliates	9		6
Depreciation and amortization	4		3
Capital expenditures	1		8
Goodwill and intangible assets, net	0				0
Total assets	1,797				1,800
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(115)		(109)
Other (charges) gains, net	0		0
Operating profit (loss)	0		0	[1]
Equity in net earnings (loss) of affiliates	0		0
Depreciation and amortization	0		0
Capital expenditures	0		0
Goodwill and intangible assets, net	0				0
Total assets	$ 0				$ 0

[1] As Adjusted (Note 1)

[2] Excludes expenditures related to the relocation of the Company’s POM operations in Germany (Note 20) and includes a decrease in accrued capital expenditures of $17 million and $36 million for the three months ended March 31, 2013 and 2012, respectively.

[3] Net sales for Acetyl Intermediates and Consumer Specialties include inter-segment sales of $112 million and $3 million, respectively, for the three months ended March 31, 2013 and $108 million and $1 million, respectively, for the three months ended March 31, 2012.

XML

Benefit Obligations (Tables)

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Costs Recognized

The components of net periodic benefit costs are as follows:

	Pension Benefits				Postretirement Benefits
	Three Months Ended March 31,
	2013		2012		2013	2012
			As Adjusted (Note 1)			As Adjusted (Note 1)
	(In $ millions)
Service cost	9		7		1	—
Interest cost	39		43		2	3
Expected return on plan assets	(56	)	(51	)	—	—
Recognized actuarial (gain) loss	—		—		—	—
Amortization of prior service cost (credit)	—		1		—	—
Curtailment (gain) loss	—		—		—	—
Total	(8	)	—		3	3

Schedule of Company Commitments to Fund Benefit Obligations

Commitments to fund benefit obligations during 2013 are as follows:

	As of March 31, 2013	Expected for 2013
	(In $ millions)
Cash contributions to defined benefit pension plans	9	30
Benefit payments to nonqualified pension plans	6	22
Benefit payments to other postretirement benefit plans	4	24

XML

Description of the Company and Basis of Presentation (Schedule of Changes in Accounting Policy Regarding Pension and Other Postretirement Benefits - Consolidated Statements of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)	$ 142	$ 193	[1]
Pension and postretirement benefit expense	(5)	3	[1]
Pension and postretirement contributions	(19)	(66)	[1]
Deferred income taxes, net	(8)	(91)	[1]
Other liabilities	83	(32)	[1]
As Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)		183
Pension and postretirement benefit expense		0
Pension and postretirement contributions		0
Deferred income taxes, net		(94)
Other liabilities		(82)
Effect of Change [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)		10
Pension and postretirement benefit expense		3
Pension and postretirement contributions		(66)
Deferred income taxes, net		3
Other liabilities		$ 50

[1] As Adjusted (Note 1)

XML

Debt (Schedule of Balances Available for Borrowing Under the Revolving Credit Facility and the Credit-linked Revolving Facility) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Borrowings outstanding	$ 0
Letters of credit issued	0
Available for borrowing	600
Credit-Linked Revolving Facility [Member]
Debt Instrument [Line Items]
Borrowings outstanding	100	50
Letters of credit issued	78
Available for borrowing	$ 50

XML

Current Other Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Other Liabilities, Current [Abstract]
Salaries and benefits	$ 74	$ 74
Environmental (Note 11)	21	21
Restructuring (Note 13)	25	30
Insurance	14	15
Asset retirement obligations	31	38
Derivatives (Note 15)	18	23
Current portion of benefit obligations	47	47
Interest	37	23
Sales and use tax/foreign withholding tax payable	18	17
Uncertain tax positions	60	65
Customer rebates	38	44
Other	76	78
Total	$ 459	$ 475

XML

Plant Relocation (Tables)

3 Months Ended

Mar. 31, 2013

Plant Relocation [Abstract]

Schedule of Plant Relocation Financial Statement Impact

A summary of the financial statement impact associated with the Kelsterbach plant relocation is as follows:

	Three Months Ended March 31,		Total from inception through March 31, 2013
	2013	2012
	(In $ millions)
Deferred proceeds (1)	—	—	907
Costs expensed	2	—	115
Costs capitalized (2)	2	13	1,129
Lease buyout	—	—	22
Employee termination benefits	—	—	8

_____________________________

⁽¹⁾  Included in noncurrent Other liabilities in the consolidated balance sheets. Amounts reflect the US dollar equivalent at the time of receipt. Upon transfer of title to Fraport, the deferred proceeds will be recognized in the consolidated statements of operations. Such proceeds will be reduced by assets of €7 million included in Property, plant and equipment, net and €102 million included in noncurrent Other assets in the consolidated balance sheets, to be transferred to Fraport or otherwise disposed.

⁽²⁾  Includes a decrease in accrued capital expenditures of $1 million and $8 million for the three months endedMarch 31, 2013 and 2012, respectively.

XML

Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 2013

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In March 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2013-05, Parent's Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity, an amendment to FASB Accounting Standards Codification ("ASC") Topic 830, Foreign Currency Matters ("FASB ASC Topic 830"). The update clarifies that complete or substantially complete liquidation of a foreign entity is required to release the cumulative translation adjustment ("CTA") for transactions occurring within a foreign entity. However, transactions impacting investments in a foreign entity may result in a full or partial release of CTA even though complete or substantially complete liquidation of the foreign entity has not occurred. Furthermore, for transactions involving step acquisitions, the CTA associated with the previous equity-method investment will be fully released when control is obtained and consolidation occurs. This ASU is effective for fiscal years beginning after December 15, 2013. The Company will apply the guidance prospectively to derecognition events occurring after the effective date.

In February 2013, the FASB issued ASU 2013-04, Obligations Resulting From Joint and Several Liability Arrangements for Which the Total Amount of the Obligation is Fixed at the Reporting Date, an amendment to FASB ASC Topic 405, Liabilities ("FASB ASC Topic 405"). The update requires an entity to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed as of the reporting date as the sum of the obligation the entity agreed to pay among its co-obligors and any additional amount the entity expects to pay on behalf of its co-obligors. This ASU is effective for annual and interim periods beginning after December 15, 2013 and is required to be applied retrospectively to all prior periods presented for those obligations that existed upon adoption of the ASU. The Company is still assessing the potential impact of adopting this guidance.

XML

Noncurrent Other Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Other Liabilities, Noncurrent [Abstract]
Environmental (Note 11)	$ 73		$ 78
Insurance	61		58
Deferred revenue	34		36
Deferred proceeds	882	[1]	909	[1]
Asset retirement obligations	25		26
Derivatives (Note 15)	4		8
Income taxes payable	3		2
Other	41		35
Total	$ 1,123		$ 1,152

[1] Primarily relates to proceeds received from the Frankfurt, Germany Airport as part of a settlement for the Company to cease operations and sell its Kelsterbach, Germany manufacturing site, included in the Advanced Engineered Materials segment (Note 20). Such proceeds will be deferred until title transfers to the Frankfurt, Germany Airport.

XML

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

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 Using
	Balance Sheet Classification	Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)		Total
		(In $ millions)
Mutual funds	Marketable securities, at fair value	49	—		49
Derivatives Not Designated as Hedges
Foreign currency forwards and swaps	Current Other assets	—	5		5
Total assets as of March 31, 2013		49	5		54
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	Current Other liabilities	—	(10	)	(10	)
Interest rate swaps	Noncurrent Other liabilities	—	(4	)	(4	)
Derivatives Not Designated as Hedges
Interest rate swaps	Current Other liabilities	—	(5	)	(5	)
Foreign currency forwards and swaps	Current Other liabilities	—	(3	)	(3	)
Total liabilities as of March 31, 2013		—	(22	)	(22	)
Mutual funds	Marketable securities, at fair value	53	—		53
Derivatives Not Designated as Hedges
Foreign currency forwards and swaps	Current Other assets	—	2		2
Total assets as of December 31, 2012		53	2		55
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	Current Other liabilities	—	(10	)	(10	)
Interest rate swaps	Noncurrent Other liabilities	—	(7	)	(7	)
Derivatives Not Designated as Hedges
Interest rate swaps	Current Other liabilities	—	(5	)	(5	)
Interest rate swaps	Noncurrent Other liabilities	—	(1	)	(1	)
Foreign currency forwards and swaps	Current Other liabilities	—	(8	)	(8	)
Total liabilities as of December 31, 2012		—	(31	)	(31	)

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 Using
	Carrying Amount	Significant Other Observable Inputs (Level 2)	Unobservable Inputs (Level 3)	Total
		(In $ millions)
As of March 31, 2013
Cost investments	155	—	—	—
Insurance contracts in nonqualified trusts	65	65	—	65
Long-term debt, including current installments of long-term debt	2,982	2,850	245	3,095
As of December 31, 2012
Cost investments	156	—	—	—
Insurance contracts in nonqualified trusts	66	66	—	66
Long-term debt, including current installments of long-term debt	2,990	2,886	244	3,130

XML

Description of the Company and Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2013

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.

Changes in accounting policy regarding pension and other postretirement benefits

Change in accounting policy regarding pension and other postretirement benefits

Effective January 1, 2013, the Company elected to change its accounting policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for its defined benefit pension plans and other postretirement benefit plans. Previously, the Company recognized the actuarial gains and losses as a component of Accumulated other comprehensive income (loss), net within the consolidated balance sheets on an annual basis and amortized the gains and losses into operating results over the average remaining service period to retirement date for active plan participants or, for retired participants, the average remaining life expectancy. For defined benefit pension plans, the unrecognized gains and losses were amortized when the net gains and losses exceeded 10% of the greater of the market-related value of plan assets or the projected benefit obligation at the beginning of the year. For other postretirement benefits, amortization occurred when the net gains and losses exceeded 10% of the accumulated postretirement benefit obligation at the beginning of the year.

Previously, differences between the actual rate of return on plan assets and the long-term expected rate of return on plan assets were not generally recognized in net periodic benefit cost in the year that the difference occurred. These differences were deferred and amortized into net periodic benefit cost over the average remaining future service period of employees. The asset gains and losses subject to amortization and the long-term expected return on plan assets were previously calculated using a five-year smoothing of asset gains and losses referred to as the market-related value to stabilize variability in the plan asset values.

The Company now applies the long-term expected rate of return to the fair value of plan assets and immediately recognizes the change in fair value of plan assets and net actuarial gains and losses annually in the fourth quarter of each fiscal year and whenever a plan is required to be remeasured. Events requiring a plan remeasurement will be recognized in the quarter in which such remeasurement event occurs. The remaining components of the Company's net periodic benefit cost are recorded on a quarterly basis. While the Company's historical policy of recognizing the change in fair value of plan assets and net actuarial gains and losses is considered acceptable under US GAAP, the Company believes the new policy is preferable as it eliminates the delay in recognizing gains and losses within operating results. This change improves transparency within the Company's operating results by immediately recognizing the effects of economic and interest rate trends on plan investments and assumptions in the year these gains and losses are actually incurred. The policy changes have no impact on future pension and postretirement benefit plan funding or pension and postretirement benefits paid to participants. Financial information for all periods presented has been retrospectively adjusted.

In connection with the changes in accounting policy for pension and other postretirement benefits and in an attempt to properly match the actual operational expenses each business segment is incurring, the Company changed its allocation of net periodic benefit cost. Previously, the Company allocated all components of net periodic benefit cost to each business segment on a ratable basis. The Company now allocates only the service cost and amortization of prior service cost components of its pension and postretirement plans to its business segments. All other components of net periodic benefit cost are recorded to Other Activities. The components of net periodic benefit cost that are no longer allocated to each business segment include interest cost, expected return on assets and net actuarial gains and losses as these components are considered financing activities managed at the corporate level. The Company believes the revised expense allocation more appropriately matches the cost incurred for active employees to the respective business segment. Business segment information for prior periods has been retrospectively adjusted (Note 18).

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of operations is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions, except per share data)
Cost of sales	(1,363	)	4		(1,359	)
Gross profit	270		4		274
Selling, general and administrative expenses	(134	)	8		(126	)
Research and development expenses	(26	)	1		(25	)
Operating profit (loss)	98		13		111
Earnings (loss) from continuing operations before tax	107		13		120
Income tax (provision) benefit	76		(3	)	73
Earnings (loss) from continuing operations	183		10		193
Net earnings (loss)	183		10		193
Net earnings (loss) attributable to Celanese Corporation	183		10		193
Earnings (loss) per common share - basic
Continuing operations	1.17		0.06		1.23
Discontinued operations	—		—		—
Net earnings (loss) - basic	1.17		0.06		1.23
Earnings (loss) per common share - diluted
Continuing operations	1.15		0.06		1.21
Discontinued operations	—		—		—
Net earnings (loss) - diluted	1.15		0.06		1.21

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of comprehensive income (loss) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported	Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183	10		193
Pension and postretirement benefits	6	(10	)	(4	)
Total other comprehensive income (loss), net of tax	33	(10	)	23
Total comprehensive income (loss), net of tax	216	—		216
Comprehensive (income) loss attributable to Celanese Corporation	216	—		216

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated balance sheet is as follows:

	As of December 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Retained earnings	2,986		(993	)	1,993
Accumulated other comprehensive income (loss), net	(1,082	)	993		(89	)

The cumulative effect of the change in accounting policy for pension and other postretirement benefits on Retained earnings as of December 31, 2011 was a decrease of $760 million, with an equivalent increase to Accumulated other comprehensive income.

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of cash flows is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183		10		193
Pension and postretirement benefit expense	—		3		3
Pension and postretirement contributions	—		(66	)	(66	)
Deferred income taxes, net	(94	)	3		(91	)
Other liabilities	(82	)	50		(32	)

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the business segment financial information (Note 18) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change	As Adjusted
	(In $ millions)
Operating Profit (Loss)
Advanced Engineered Materials	21		3	24
Consumer Specialties	39		1	40
Industrial Specialties	19		1	20
Acetyl Intermediates	60		2	62
Other Activities	(41	)	6	(35	)
Total	98		13	111

XML

Consolidating Guarantor Financial Information

3 Months Ended

Mar. 31, 2013

Consolidating Guarantor Financial Information [Abstract]

Consolidating Guarantor Financial Information

Consolidating Guarantor Financial Information

The Senior Notes were issued by Celanese US (the "Issuer") and are guaranteed by Celanese Corporation (the "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 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 three months endedMarch 31, 2013 and 2012 present such intercompany financing activities, contributions and dividends consistent with how such activity would be presented in a stand-alone statement of cash flows. Previously, the Company presented such activity within the category where the ultimate use of cash to third parties was presented in the consolidated statements of cash flow. Prior amounts have been revised to conform to the current presentation.

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 March 31, 2013
	Parent Guarantor	Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net sales	—	—		680		1,207		(282	)	1,605
Cost of sales	—	—		(475	)	(1,094	)	297		(1,272	)
Gross profit	—	—		205		113		15		333
Selling, general and administrative expenses	—	—		(21	)	(85	)	—		(106	)
Amortization of intangible assets	—	—		(4	)	(7	)	—		(11	)
Research and development expenses	—	—		(16	)	(10	)	—		(26	)
Other (charges) gains, net	—	—		4		(4	)	(4	)	(4	)
Foreign exchange gain (loss), net	—	—		—		(1	)	—		(1	)
Gain (loss) on disposition of businesses and assets, net	—	—		(1	)	—		—		(1	)
Operating profit (loss)	—	—		167		6		11		184
Equity in net earnings (loss) of affiliates	141	167		37		49		(340	)	54
Interest expense	—	(47	)	(10	)	(16	)	30		(43	)
Refinancing expense	—	—		—		—		—		—
Interest income	—	14		15		1		(30	)	—
Dividend income - cost investments	—	—		—		24		—		24
Other income (expense), net	—	—		—		(1	)	—		(1	)
Earnings (loss) from continuing operations before tax	141	134		209		63		(329	)	218
Income tax (provision) benefit	1	7		(44	)	(37	)	(4	)	(77	)
Earnings (loss) from continuing operations	142	141		165		26		(333	)	141
Earnings (loss) from operation of discontinued operations	—	—		2		—		—		2
Gain (loss) on disposition of discontinued operations	—	—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—	—		(1	)	—		—		(1	)
Earnings (loss) from discontinued operations	—	—		1		—		—		1
Net earnings (loss)	142	141		166		26		(333	)	142
Net (earnings) loss attributable to noncontrolling interests	—	—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	142	141		166		26		(333	)	142

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF OPERATIONS

	Three Months Ended March 31, 2012
	Parent Guarantor	Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	As Adjusted (Note 1)
	(In $ millions)
Net sales	—	—		640		1,249		(256	)	1,633
Cost of sales	—	—		(478	)	(1,148	)	267		(1,359	)
Gross profit	—	—		162		101		11		274
Selling, general and administrative expenses	—	—		(39	)	(87	)	—		(126	)
Amortization of intangible assets	—	—		(5	)	(8	)	—		(13	)
Research and development expenses	—	—		(15	)	(10	)	—		(25	)
Other (charges) gains, net	—	—		1		(1	)	—		—
Foreign exchange gain (loss), net	—	—		—		1		—		1
Gain (loss) on disposition of businesses and assets, net	—	—		—		—		—		—
Operating profit (loss)	—	—		104		(4	)	11		111
Equity in net earnings (loss) of affiliates	193	207		40		42		(431	)	51
Interest expense	—	(48	)	(11	)	(18	)	32		(45	)
Refinancing expense	—	—		—		—		—		—
Interest income	—	15		16		2		(32	)	1
Dividend income - cost investments	—	—		—		—		—		—
Other income (expense), net	—	1		—		1		—		2
Earnings (loss) from continuing operations before tax	193	175		149		23		(420	)	120
Income tax (provision) benefit	—	18		59		(1	)	(3	)	73
Earnings (loss) from continuing operations	193	193		208		22		(423	)	193
Earnings (loss) from operation of discontinued operations	—	—		—		—		—		—
Gain (loss) on disposition of discontinued operations	—	—		—		—		—		—
Income tax (provision) benefit from discontinued operations	—	—		—		—		—		—
Earnings (loss) from discontinued operations	—	—		—		—		—		—
Net earnings (loss)	193	193		208		22		(423	)	193
Net (earnings) loss attributable to noncontrolling interests	—	—		—		—		—		—
Net earnings (loss) attributable to Celanese Corporation	193	193		208		22		(423	)	193

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2013
	Parent Guarantor		Issuer		Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
Net earnings (loss)	142		141		166	26	(333	)	142
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—	—	—		—
Foreign currency translation	(31	)	(31	)	5	5	21		(31	)
Gain (loss) on interest rate swaps	1		1		—	—	(1	)	1
Pension and postretirement benefits	—		—		—	—	—		—
Total other comprehensive income (loss), net of tax	(30	)	(30	)	5	5	20		(30	)
Total comprehensive income (loss), net of tax	112		111		171	31	(313	)	112
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—	—	—		—
Comprehensive income (loss) attributable to Celanese Corporation	112		111		171	31	(313	)	112

	Three Months Ended March 31, 2012
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	As Adjusted (Note 1)
	(In $ millions)
Net earnings (loss)	193		193		208		22		(423	)	193
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	—		—		—		—		—		—
Foreign currency translation	26		26		(11	)	(6	)	(9	)	26
Gain (loss) on interest rate swaps	1		1		—		—		(1	)	1
Pension and postretirement benefits	(4	)	(4	)	(3	)	(3	)	10		(4	)
Total other comprehensive income (loss), net of tax	23		23		(14	)	(9	)	—		23
Total comprehensive income (loss), net of tax	216		216		194		13		(423	)	216
Comprehensive (income) loss attributable to noncontrolling interests	—		—		—		—		—		—
Comprehensive income (loss) attributable to Celanese Corporation	216		216		194		13		(423	)	216

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED CONSOLIDATING BALANCE SHEET

	As of March 31, 2013
	Parent Guarantor	Issuer	Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	—	—	325	653	—		978
Trade receivables - third party and affiliates	—	—	352	720	(156	)	916
Non-trade receivables, net	31	425	1,745	388	(2,392	)	197
Inventories, net	—	—	208	609	(59	)	758
Deferred income taxes	—	—	64	7	(21	)	50
Marketable securities, at fair value	—	—	49	—	—		49
Other assets	—	5	13	36	(16	)	38
Total current assets	31	430	2,756	2,413	(2,644	)	2,986
Investments in affiliates	1,806	3,618	1,616	560	(6,804	)	796
Property, plant and equipment, net	—	—	824	2,462	—		3,286
Deferred income taxes	—	4	515	90	(6	)	603
Other assets	—	1,870	131	429	(1,950	)	480
Goodwill	—	—	305	457	—		762
Intangible assets, net	—	—	68	87	—		155
Total assets	1,837	5,922	6,215	6,498	(11,404	)	9,068
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—	1,570	122	112	(1,692	)	112
Trade payables - third party and affiliates	—	—	231	584	(156	)	659
Other liabilities	—	58	268	408	(275	)	459
Deferred income taxes	—	21	—	25	(21	)	25
Income taxes payable	—	—	471	82	(457	)	96
Total current liabilities	—	1,649	1,092	1,211	(2,601	)	1,351
Noncurrent Liabilities
Long-term debt	—	2,457	904	1,545	(1,947	)	2,959
Deferred income taxes	—	—	—	50	(6	)	44
Uncertain tax positions	2	6	21	151	—		180
Benefit obligations	—	—	1,345	231	—		1,576
Other liabilities	—	4	99	1,031	(11	)	1,123
Total noncurrent liabilities	2	2,467	2,369	3,008	(1,964	)	5,882
Total Celanese Corporation stockholders’ equity	1,835	1,806	2,754	2,279	(6,839	)	1,835
Noncontrolling interests	—	—	—	—	—		—
Total equity	1,835	1,806	2,754	2,279	(6,839	)	1,835
Total liabilities and equity	1,837	5,922	6,215	6,498	(11,404	)	9,068

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED CONSOLIDATING BALANCE SHEET

	As of December 31, 2012
	Parent Guarantor	Issuer	Subsidiary Guarantors	Non- Guarantors	Eliminations		Consolidated
	(In $ millions)
ASSETS
Current Assets
Cash and cash equivalents	10	—	275	674	—		959
Trade receivables - third party and affiliates	—	—	340	653	(166	)	827
Non-trade receivables, net	31	444	1,754	484	(2,504	)	209
Inventories, net	—	—	196	589	(74	)	711
Deferred income taxes	—	—	62	8	(21	)	49
Marketable securities, at fair value	—	—	52	1	—		53
Other assets	—	5	15	27	(16	)	31
Total current assets	41	449	2,694	2,436	(2,781	)	2,839
Investments in affiliates	1,692	3,437	1,579	570	(6,478	)	800
Property, plant and equipment, net	—	—	813	2,537	—		3,350
Deferred income taxes	—	5	509	92	—		606
Other assets	—	1,927	132	414	(2,010	)	463
Goodwill	—	—	305	472	—		777
Intangible assets, net	—	—	69	96	—		165
Total assets	1,733	5,818	6,101	6,617	(11,269	)	9,000
LIABILITIES AND EQUITY
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	—	1,584	208	159	(1,783	)	168
Trade payables - third party and affiliates	—	—	269	546	(166	)	649
Other liabilities	—	40	267	475	(307	)	475
Deferred income taxes	—	21	—	25	(21	)	25
Income taxes payable	—	—	419	73	(454	)	38
Total current liabilities	—	1,645	1,163	1,278	(2,731	)	1,355
Noncurrent Liabilities
Long-term debt	—	2,467	872	1,597	(2,006	)	2,930
Deferred income taxes	—	—	—	50	—		50
Uncertain tax positions	3	6	23	149	—		181
Benefit obligations	—	—	1,362	240	—		1,602
Other liabilities	—	8	101	1,055	(12	)	1,152
Total noncurrent liabilities	3	2,481	2,358	3,091	(2,018	)	5,915
Total Celanese Corporation stockholders’ equity	1,730	1,692	2,580	2,248	(6,520	)	1,730
Noncontrolling interests	—	—	—	—	—		—
Total equity	1,730	1,692	2,580	2,248	(6,520	)	1,730
Total liabilities and equity	1,733	5,818	6,101	6,617	(11,269	)	9,000

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS

	Three Months Ended March 31, 2013
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net cash provided by (used in) operating activities	1		(18	)	90		76		(2	)	147
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(41	)	(33	)	—		(74	)
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	—		—		—		(3	)	—		(3	)
Return of capital from subsidiary	—		—		—		—		—		—
Contributions to subsidiary	—		—		—		—		—		—
Intercompany loan receipts (disbursements)	—		1		(20	)	—		19		—
Other, net	—		—		(4	)	(6	)	—		(10	)
Net cash provided by (used in) investing activities	—		1		(65	)	(42	)	19		(87	)
Financing Activities
Short-term borrowings (repayments), net	—		20		(9	)	(10	)	(20	)	(19	)
Proceeds from short-term borrowings	—		—		—		24		—		24
Repayments of short-term borrowings	—		—		—		(24	)	—		(24	)
Proceeds from long-term debt	—		—		50		—		—		50
Repayments of long-term debt	—		(2	)	(15	)	(39	)	1		(55	)
Refinancing costs	—		—		—		—		—		—
Purchases of treasury stock, including related fees	—		—		—		—		—		—
Dividends to parent	—		(1	)	(1	)	—		2		—
Contributions from parent	—		—		—		—		—		—
Stock option exercises	1		—		—		—		—		1
Series A common stock dividends	(12	)	—		—		—		—		(12	)
Return of capital to parent	—		—		—		—		—		—
Other, net	—		—		—		—		—		—
Net cash provided by (used in) financing activities	(11	)	17		25		(49	)	(17	)	(35	)
Exchange rate effects on cash and cash equivalents	—		—		—		(6	)	—		(6	)
Net increase (decrease) in cash and cash equivalents	(10	)	—		50		(21	)	—		19
Cash and cash equivalents as of beginning of period	10		—		275		674		—		959
Cash and cash equivalents as of end of period	—		—		325		653		—		978

CELANESE CORPORATION AND SUBSIDIARIES

UNAUDITED INTERIM CONSOLIDATING STATEMENT OF CASH FLOWS

	Three Months Ended March 31, 2012
	Parent Guarantor		Issuer		Subsidiary Guarantors		Non- Guarantors		Eliminations		Consolidated
	(In $ millions)
Net cash provided by (used in) operating activities	23		(3	)	135		106		(46	)	215
Investing Activities
Capital expenditures on property, plant and equipment	—		—		(54	)	(52	)	—		(106	)
Acquisitions, net of cash acquired	—		—		(23	)	—		—		(23	)
Proceeds from sale of businesses and assets, net	—		—		—		—		—		—
Deferred proceeds from Kelsterbach plant relocation	—		—		—		—		—		—
Capital expenditures related to Kelsterbach plant relocation	—		—		—		(21	)	—		(21	)
Return of capital from subsidiary	—		—		—		—		—		—
Contributions to subsidiary	—		—		(3	)	—		3		—
Intercompany loan receipts (disbursements)	—		1		(28	)	—		27		—
Other, net	—		—		(3	)	(2	)	—		(5	)
Net cash provided by (used in) investing activities	—		1		(111	)	(75	)	30		(155	)
Financing Activities
Short-term borrowings (repayments), net	—		28		2		7		(27	)	10
Proceeds from short-term borrowings	—		—		—		24		—		24
Repayments of short-term borrowings	—		—		—		(24	)	—		(24	)
Proceeds from long-term debt	—		—		—		—		—		—
Repayments of long-term debt	—		(3	)	(1	)	(4	)	—		(8	)
Refinancing costs	—		—		—		—		—		—
Purchases of treasury stock, including related fees	(20	)	—		—		—		—		(20	)
Dividends to parent	—		(23	)	(23	)	—		46		—
Contributions from parent	—		—		—		3		(3	)	—
Stock option exercises	7		—		—		—		—		7
Series A common stock dividends	(10	)	—		—		—		—		(10	)
Return of capital to parent	—		—		—		—		—		—
Other, net	—		—		—		—		—		—
Net cash provided by (used in) financing activities	(23	)	2		(22	)	6		16		(21	)
Exchange rate effects on cash and cash equivalents	—		—		—		6		—		6
Net increase (decrease) in cash and cash equivalents	—		—		2		43		—		45
Cash and cash equivalents as of beginning of period	—		—		133		549		—		682
Cash and cash equivalents as of end of period	—		—		135		592		—		727

XML

Plant Relocation (Schedule of Plant Relocation Financial Statement Impact) (Details) In Millions, unless otherwise specified	3 Months Ended			3 Months Ended					77 Months Ended
	Mar. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2012 USD ($)	Mar. 31, 2013 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] USD ($)		Mar. 31, 2012 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] USD ($)		Jun. 30, 2011 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] EUR (€)	Mar. 31, 2013 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] USD ($)		Mar. 31, 2013 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] EUR (€)
Plant Relocation [Line Items]
Deferred proceeds	$ 0	$ 0		$ 0	[1]	$ 0	[1]	€ 110	$ 907	[1]
Costs expensed	2	0		2		0			115
Costs capitalized				2	[2]	13	[2]		1,129	[2]
Lease buyout				0		0			22
Employee termination benefits	2	0		0		0			8
Property, plant and equipment, net	3,286		3,350								7
Other assets, noncurrent	480		463								102
Increase (decrease) in accrued capital expenditures, plant relocation				$ (1)		$ (8)

[1] Included in noncurrent Other liabilities in the consolidated balance sheets. Amounts reflect the US dollar equivalent at the time of receipt. Upon transfer of title to Fraport, the deferred proceeds will be recognized in the consolidated statements of operations. Such proceeds will be reduced by assets of €7 million included in Property, plant and equipment, net and €102 million included in noncurrent Other assets in the consolidated balance sheets, to be transferred to Fraport or otherwise disposed.

[2] Includes a decrease in accrued capital expenditures of $1 million and $8 million for the three months ended March 31, 2013 and 2012, respectively.

XML

Inventories (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Finished goods	$ 560	$ 514
Work-in-process	52	42
Raw materials and supplies	146	155
Total	$ 758	$ 711

XML

Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Variable Interest Entities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Property, plant and equipment, net	116	118
Trade payables	43	41
Current installments of long-term debt	7	7
Long-term debt	139	140
Total	189	188
Maximum exposure to loss	273	273

XML

Description of the Company and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Changes in Accounting Policy Regarding Pension and Other Postretirement Benefits

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of operations is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions, except per share data)
Cost of sales	(1,363	)	4		(1,359	)
Gross profit	270		4		274
Selling, general and administrative expenses	(134	)	8		(126	)
Research and development expenses	(26	)	1		(25	)
Operating profit (loss)	98		13		111
Earnings (loss) from continuing operations before tax	107		13		120
Income tax (provision) benefit	76		(3	)	73
Earnings (loss) from continuing operations	183		10		193
Net earnings (loss)	183		10		193
Net earnings (loss) attributable to Celanese Corporation	183		10		193
Earnings (loss) per common share - basic
Continuing operations	1.17		0.06		1.23
Discontinued operations	—		—		—
Net earnings (loss) - basic	1.17		0.06		1.23
Earnings (loss) per common share - diluted
Continuing operations	1.15		0.06		1.21
Discontinued operations	—		—		—
Net earnings (loss) - diluted	1.15		0.06		1.21

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of comprehensive income (loss) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported	Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183	10		193
Pension and postretirement benefits	6	(10	)	(4	)
Total other comprehensive income (loss), net of tax	33	(10	)	23
Total comprehensive income (loss), net of tax	216	—		216
Comprehensive (income) loss attributable to Celanese Corporation	216	—		216

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated balance sheet is as follows:

	As of December 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Retained earnings	2,986		(993	)	1,993
Accumulated other comprehensive income (loss), net	(1,082	)	993		(89	)

The cumulative effect of the change in accounting policy for pension and other postretirement benefits on Retained earnings as of December 31, 2011 was a decrease of $760 million, with an equivalent increase to Accumulated other comprehensive income.

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of cash flows is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183		10		193
Pension and postretirement benefit expense	—		3		3
Pension and postretirement contributions	—		(66	)	(66	)
Deferred income taxes, net	(94	)	3		(91	)
Other liabilities	(82	)	50		(32	)

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the business segment financial information (Note 18) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change	As Adjusted
	(In $ millions)
Operating Profit (Loss)
Advanced Engineered Materials	21		3	24
Consumer Specialties	39		1	40
Industrial Specialties	19		1	20
Acetyl Intermediates	60		2	62
Other Activities	(41	)	6	(35	)
Total	98		13	111

XML

Marketable Securities, at Fair Value (Tables)

3 Months Ended

Mar. 31, 2013

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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Mutual Funds
Amortized cost	49	53
Gross unrealized gain	—	—
Gross unrealized loss	—	—
Fair value	49	53

XML

Description of the Company and Basis of Presentation

3 Months Ended

Mar. 31, 2013

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, 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 months endedMarch 31, 2013 and 2012 contained in this Quarterly Report on Form 10-Q ("Quarterly Report") were prepared in accordance with accounting principles generally accepted in the United States of America ("US GAAP") for all periods presented. 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 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, 2012, filed on February 8, 2013 with the SEC as part of the Company’s Annual Report on Form 10-K.

Operating results for the three months endedMarch 31, 2013 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 subsidiaries in which the Company's ownership is less than 100%, 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.

Change in accounting policy regarding pension and other postretirement benefits

Effective January 1, 2013, the Company elected to change its accounting policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for its defined benefit pension plans and other postretirement benefit plans. Previously, the Company recognized the actuarial gains and losses as a component of Accumulated other comprehensive income (loss), net within the consolidated balance sheets on an annual basis and amortized the gains and losses into operating results over the average remaining service period to retirement date for active plan participants or, for retired participants, the average remaining life expectancy. For defined benefit pension plans, the unrecognized gains and losses were amortized when the net gains and losses exceeded 10% of the greater of the market-related value of plan assets or the projected benefit obligation at the beginning of the year. For other postretirement benefits, amortization occurred when the net gains and losses exceeded 10% of the accumulated postretirement benefit obligation at the beginning of the year.

Previously, differences between the actual rate of return on plan assets and the long-term expected rate of return on plan assets were not generally recognized in net periodic benefit cost in the year that the difference occurred. These differences were deferred and amortized into net periodic benefit cost over the average remaining future service period of employees. The asset gains and losses subject to amortization and the long-term expected return on plan assets were previously calculated using a five-year smoothing of asset gains and losses referred to as the market-related value to stabilize variability in the plan asset values.

The Company now applies the long-term expected rate of return to the fair value of plan assets and immediately recognizes the change in fair value of plan assets and net actuarial gains and losses annually in the fourth quarter of each fiscal year and whenever a plan is required to be remeasured. Events requiring a plan remeasurement will be recognized in the quarter in which such remeasurement event occurs. The remaining components of the Company's net periodic benefit cost are recorded on a quarterly basis. While the Company's historical policy of recognizing the change in fair value of plan assets and net actuarial gains and losses is considered acceptable under US GAAP, the Company believes the new policy is preferable as it eliminates the delay in recognizing gains and losses within operating results. This change improves transparency within the Company's operating results by immediately recognizing the effects of economic and interest rate trends on plan investments and assumptions in the year these gains and losses are actually incurred. The policy changes have no impact on future pension and postretirement benefit plan funding or pension and postretirement benefits paid to participants. Financial information for all periods presented has been retrospectively adjusted.

In connection with the changes in accounting policy for pension and other postretirement benefits and in an attempt to properly match the actual operational expenses each business segment is incurring, the Company changed its allocation of net periodic benefit cost. Previously, the Company allocated all components of net periodic benefit cost to each business segment on a ratable basis. The Company now allocates only the service cost and amortization of prior service cost components of its pension and postretirement plans to its business segments. All other components of net periodic benefit cost are recorded to Other Activities. The components of net periodic benefit cost that are no longer allocated to each business segment include interest cost, expected return on assets and net actuarial gains and losses as these components are considered financing activities managed at the corporate level. The Company believes the revised expense allocation more appropriately matches the cost incurred for active employees to the respective business segment. Business segment information for prior periods has been retrospectively adjusted (Note 18).

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of operations is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions, except per share data)
Cost of sales	(1,363	)	4		(1,359	)
Gross profit	270		4		274
Selling, general and administrative expenses	(134	)	8		(126	)
Research and development expenses	(26	)	1		(25	)
Operating profit (loss)	98		13		111
Earnings (loss) from continuing operations before tax	107		13		120
Income tax (provision) benefit	76		(3	)	73
Earnings (loss) from continuing operations	183		10		193
Net earnings (loss)	183		10		193
Net earnings (loss) attributable to Celanese Corporation	183		10		193
Earnings (loss) per common share - basic
Continuing operations	1.17		0.06		1.23
Discontinued operations	—		—		—
Net earnings (loss) - basic	1.17		0.06		1.23
Earnings (loss) per common share - diluted
Continuing operations	1.15		0.06		1.21
Discontinued operations	—		—		—
Net earnings (loss) - diluted	1.15		0.06		1.21

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of comprehensive income (loss) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported	Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183	10		193
Pension and postretirement benefits	6	(10	)	(4	)
Total other comprehensive income (loss), net of tax	33	(10	)	23
Total comprehensive income (loss), net of tax	216	—		216
Comprehensive (income) loss attributable to Celanese Corporation	216	—		216

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated balance sheet is as follows:

	As of December 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Retained earnings	2,986		(993	)	1,993
Accumulated other comprehensive income (loss), net	(1,082	)	993		(89	)

The cumulative effect of the change in accounting policy for pension and other postretirement benefits on Retained earnings as of December 31, 2011 was a decrease of $760 million, with an equivalent increase to Accumulated other comprehensive income.

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the consolidated statement of cash flows is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change		As Adjusted
	(In $ millions)
Net earnings (loss)	183		10		193
Pension and postretirement benefit expense	—		3		3
Pension and postretirement contributions	—		(66	)	(66	)
Deferred income taxes, net	(94	)	3		(91	)
Other liabilities	(82	)	50		(32	)

The retrospective effect of the change in accounting policy for pension and other postretirement benefits to the business segment financial information (Note 18) is as follows:

	Three Months Ended March 31, 2012
	As Previously Reported		Effect of Change	As Adjusted
	(In $ millions)
Operating Profit (Loss)
Advanced Engineered Materials	21		3	24
Consumer Specialties	39		1	40
Industrial Specialties	19		1	20
Acetyl Intermediates	60		2	62
Other Activities	(41	)	6	(35	)
Total	98		13	111

XML

Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventories

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Finished goods	560	514
Work-in-process	52	42
Raw materials and supplies	146	155
Total	758	711

XML

Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Line Items]
Effective income tax rate, excluding foreign tax credit carryforwards and reinvestment of foreign earnings		19.00%
Foreign tax credit carryforwards		$ 142
Foreign tax credit carryforward period		ten year carryforward period
Foreign tax credit carryforward expiration		2014 through 2021
Increases in tax positions for the current year	4
Decreases in tax positions due to exchange rate changes	6
Advanced Engineered Materials [Member] | Polyplastics Co., Ltd. [Member]
Income Taxes [Line Items]
Cash dividend payment		72
Deferred tax liability		$ 38

XML

Other (Charges) Gains, Net (Tables)

3 Months Ended

Mar. 31, 2013

Restructuring and Related Activities [Abstract]

Schedule of Other (Charges) Gains, Net

	Three Months Ended
	March 31,
	2013		2012
	(In $ millions)
Employee termination benefits	(2	)	—
Kelsterbach plant relocation (Note 20)	(2	)	—
Total	(4	)	—

Schedule of Restructuring Reserves

The changes in the restructuring reserves by business segment are as follows:

	Advanced Engineered Materials		Consumer Specialties		Industrial Specialties	Acetyl Intermediates		Other		Total
	(In $ millions)
Employee Termination Benefits
As of December 31, 2012	6		13		—	3		7		29
Additions	—		—		1	1		—		2
Cash payments	(1	)	(3	)	—	—		(2	)	(6	)
Other changes	—		—		—	—		—		—
Exchange rate changes	—		—		—	—		—		—
As of March 31, 2013	5		10		1	4		5		25
Plant/Office Closures
As of December 31, 2012	—		—		—	1		—		1
Additions	—		—		—	—		—		—
Cash payments	—		—		—	—		—		—
Other changes	—		—		—	—		—		—
Exchange rate changes	—		—		—	(1	)	—		(1	)
As of March 31, 2013	—		—		—	—		—		—
Total	5		10		1	4		5		25

XML

Description of the Company and Basis of Presentation (Schedule of Changes in Accounting Policy Regarding Pension and Other Postretirement Benefits - Segment Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)	$ 184	$ 111	[1]
Advanced Engineered Materials [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)	36	24	[1]
Consumer Specialties [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)	78	40	[1]
Industrial Specialties [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)	15	20	[1]
Acetyl Intermediates [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)	75	62	[1]
Other Activities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)	(20)	(35)	[1]
As Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		98
As Previously Reported [Member] | Advanced Engineered Materials [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		21
As Previously Reported [Member] | Consumer Specialties [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		39
As Previously Reported [Member] | Industrial Specialties [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		19
As Previously Reported [Member] | Acetyl Intermediates [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		60
As Previously Reported [Member] | Other Activities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		(41)
Effect of Change [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		13
Effect of Change [Member] | Advanced Engineered Materials [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		3
Effect of Change [Member] | Consumer Specialties [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		1
Effect of Change [Member] | Industrial Specialties [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		1
Effect of Change [Member] | Acetyl Intermediates [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		2
Effect of Change [Member] | Other Activities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating profit (loss)		$ 6

[1] As Adjusted (Note 1)

XML

Environmental (Schedule of Environmental Remediation Reserves) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Environmental Remediation Obligations [Abstract]
Demerger obligations (Note 17)	$ 28	$ 31
Divestiture obligations (Note 17)	21	21
Active Sites	26	28
US Superfund sites	15	15
Other environmental remediation reserves	4	4
Total	$ 94	$ 99

XML

Consolidated Statements of Operations (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net sales	$ 1,605	$ 1,633
Cost of sales	(1,272)	(1,359)	[1]
Gross profit	333	274	[1]
Selling, general and administrative expenses	(106)	(126)	[1]
Amortization of intangible assets	(11)	(13)
Research and development expenses	(26)	(25)	[1]
Other (charges) gains, net	(4)	0
Foreign exchange gain (loss), net	(1)	1
Gain (loss) on disposition of businesses and assets, net	(1)	0
Operating profit (loss)	184	111	[1]
Equity in net earnings (loss) of affiliates	54	51
Interest expense	(43)	(45)
Refinancing expense	0	0
Interest income	0	1
Dividend income - cost investments	24	0
Other income (expense), net	(1)	2
Earnings (loss) from continuing operations before tax	218	120	[1]
Income tax (provision) benefit	(77)	73	[1]
Earnings (loss) from continuing operations	141	193	[1]
Earnings (loss) from operation of discontinued operations	2	0
Gain (loss) on disposition of discontinued operations	0	0
Income tax (provision) benefit from discontinued operations	(1)	0
Earnings (loss) from discontinued operations	1	0
Net earnings (loss)	142	193	[1]
Net (earnings) loss attributable to noncontrolling interests	0	0
Net earnings (loss) attributable to Celanese Corporation	142	193	[1]
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	141	193	[1]
Earnings (loss) from discontinued operations	1	0
Net earnings (loss)	$ 142	$ 193	[1]
Earnings (loss) per common share - basic
Continuing operations	$ 0.88	$ 1.23	[1]
Discontinued operations	$ 0.01	$ 0.00	[1]
Net earnings (loss) - basic	$ 0.89	$ 1.23	[1]
Earnings (loss) per common share - diluted
Continuing operations	$ 0.88	$ 1.21	[1]
Discontinued operations	$ 0.01	$ 0.00	[1]
Net earnings (loss) - diluted	$ 0.89	$ 1.21	[1]
Weighted average shares - basic	159,682,386	156,576,896
Weighted average shares - diluted	160,201,636	159,115,232

[1] As Adjusted (Note 1)

XML

Segment Information (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Schedule of Business Segments

	Advanced Engineered Materials		Consumer Specialties			Industrial Specialties		Acetyl Intermediates			Other Activities		Eliminations		Consolidated
	(In $ millions)
	Three Months Ended March 31, 2013
Net sales	329		295		(1)	288		808		(1)	—		(115	)	1,605
Other (charges) gains, net	(2	)	—			(1	)	(1	)		—		—		(4	)
Operating profit (loss)	36		78			15		75			(20	)	—		184
Equity in net earnings (loss) of affiliates	40		2			—		3			9		—		54
Depreciation and amortization	29		10			12		21			4		—		76
Capital expenditures	8		14			5		29			1		—		57		(2)
	As of March 31, 2013
Goodwill and intangibles, net	361		271			62		223			—		—		917
Total assets	2,670		1,338			998		2,265			1,797		—		9,068
	Three Months Ended March 31, 2012 - As Adjusted (Note 1)
Net sales	317		264		(1)	309		852		(1)	—		(109	)	1,633
Other (charges) gains, net	—		(1	)		—		—			1		—		—
Operating profit (loss)	24		40			20		62			(35	)	—		111
Equity in net earnings (loss) of affiliates	43		1			—		1			6		—		51
Depreciation and amortization	27		9			15		20			3		—		74
Capital expenditures	7		16			8		31			8		—		70		(2)
	As of December 31, 2012
Goodwill and intangibles, net	372		276			65		229			—		—		942
Total assets	2,703		1,296			963		2,238			1,800		—		9,000

______________________________

⁽¹⁾  Net sales for Acetyl Intermediates and Consumer Specialties include inter-segment sales of $112 million and $3 million, respectively, for the three months endedMarch 31, 2013 and $108 million and $1 million, respectively, for the three months endedMarch 31, 2012.

⁽²⁾  Excludes expenditures related to the relocation of the Company’s POM operations in Germany (Note 20) and includes a decrease in accrued capital expenditures of $17 million and $36 million for the three months endedMarch 31, 2013 and 2012, respectively.

XML

Commitments and Contingencies Commitments and Contingencies (Purchase Obligations Narrative) (Details) (USD $) In Billions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Unrecorded unconditional purchase obligations	$ 3.3
Term of unrecorded unconditional purchase obligations	2034

XML

Consolidated Statement Equity (USD $) In Millions, except Share data	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), Net [Member]	Noncontrolling Interests [Member]
Balance as of the beginning of the period at Dec. 31, 2012	$ 1,730		$ 0	$ (905)	$ 731	$ 1,993	$ (89)	$ 0
Balance as of the beginning of the period, shares at Dec. 31, 2012			159,642,401	23,986,836
Stock-based compensation, net of tax					4
Stock option exercises, shares			36,900
Stock option exercises, net of tax			0		1
Purchases of treasury stock, shares			0
Purchases of treasury stock, including related fees			0
Purchases of treasury stock, shares	0			0
Purchases of treasury stock, including related fees	0			0
Stock awards, shares			793
Stock awards			0
Net earnings (loss) attributable to Celanese Corporation	142					142
Series A common stock dividends						(12)
Other comprehensive income (loss)	(30)						(30)
Net earnings (loss) attributable to noncontrolling interests	0							0
Balance as of the end of the period at Mar. 31, 2013	1,835		0	(905)	736	2,123	(119)	0
Total Celanese Corporation stockholders' equity at Mar. 31, 2013	$ 1,835	$ 1,835
Balance as of the end of the period, shares at Mar. 31, 2013			159,680,094	23,986,836

XML

Commitments and Contingencies (Guarantees - Demerger and Divesture Obligations Narrative) (Details) In Millions, unless otherwise specified	161 Months Ended		3 Months Ended
	Mar. 31, 2013 Indemnification Agreements Hoechst [Member] USD ($)	Mar. 31, 2013 Indemnification Agreements Hoechst [Member] EUR (€)	Mar. 31, 2013 Divestiture Agreements [Member] USD ($)
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	62
Indemnification percentage, other		33.33%
Divestiture obligations range, years			one year to thirty years
Guarantor obligations, maximum exposure			$ 132

XML

Goodwill and Intangible Assets, Net (Schedule of Indefinite-Lived Intangible Assets, Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Indefinite-lived Intangible Assets by Major Class [Line Items]
Exchange rate changes	$ (11)
Trademarks and Trade Names [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
As of December 31, 2012	82
Acquisitions (Note 3)	0
Exchange rate changes	(2)
As of March 31, 2013	$ 80

XML

Earnings (Loss) Per Share (Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share) (Details)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from computation of diluted earnings per share, amount	93,423	0
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from computation of diluted earnings per share, amount	93,423	0
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from computation of diluted earnings per share, amount	0	0

XML

Noncurrent Other Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Other Liabilities, Noncurrent [Abstract]

Schedule of Noncurrent Other Liabilities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Environmental (Note 11)	73	78
Insurance	61	58
Deferred revenue	34	36
Deferred proceeds(1)	882	909
Asset retirement obligations	25	26
Derivatives (Note 15)	4	8
Income taxes payable	3	2
Other	41	35
Total	1,123	1,152

______________________________

⁽¹⁾  Primarily relates to proceeds received from the Frankfurt, Germany Airport as part of a settlement for the Company to cease operations and sell its Kelsterbach, Germany manufacturing site, included in the Advanced Engineered Materials segment (Note 20). Such proceeds will be deferred until title transfers to the Frankfurt, Germany Airport.

XML

Debt (Schedule of Estimated Net Leverage Ratio and Estimated Margin) (Details)	3 Months Ended
	Mar. 31, 2013
Debt Instrument [Line Items]
Margin increase or decrease percentage	0.25%
Amortization rate of initial principal amount per annum payable quarterly	1.00%
Credit-Linked Revolving Facility [Member]
Debt Instrument [Line Items]
Estimated margin	1.50%
Net leverage ratio parameters	< = 2.25
Estimated total net leverage ratio	1.56
Line of credit facility, unused capacity, commitment fee percentage	1.50%
Credit-Linked Revolving Facility [Member] | Increases Margin by Zero Point Twenty Five Percent [Member]
Debt Instrument [Line Items]
Estimated margin	1.75%
Net leverage ratio parameters	> 2.25
Term C Loan Facility [Member]
Debt Instrument [Line Items]
Estimated margin	2.75%
Net leverage ratio parameters	< = 1.75
Estimated total net leverage ratio	1.56
Term C Loan Facility [Member] | Increases Margin by Zero Point Twenty Five Percent [Member]
Debt Instrument [Line Items]
Estimated margin	3.00%
Net leverage ratio parameters	> 1.75 and < = 2.25
Term C Loan Facility [Member] | Increases Margin by Zero Point Fifty Percent [Member]
Debt Instrument [Line Items]
Estimated margin	3.25%
Net leverage ratio parameters	> 2.25
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Estimated margin	2.50%
Line of credit facility, unused capacity, commitment fee percentage	0.25%

XML

Derivative Financial Instruments

3 Months Ended

Mar. 31, 2013

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). If an interest rate swap agreement is terminated prior to its maturity, the amount previously recorded in Accumulated other comprehensive income (loss), net is recognized into earnings over the period that the hedged transaction impacts earnings. If the hedging relationship is discontinued because it is probable that the forecasted transaction will not occur according to the original strategy, any related amounts previously recorded in Accumulated other comprehensive income (loss), net are recognized into earnings immediately.

US-dollar interest rate swap derivative arrangements are as follows:

As of March 31, 2013
Notional Value	Effective Date	Expiration Date	Fixed Rate (1)
(In $ millions)
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).

As of December 31, 2012
Notional Value	Effective Date	Expiration Date	Fixed Rate (1)
(In $ millions)
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 enters into foreign currency forwards and swaps to minimize its exposure to foreign currency fluctuations. Through these instruments, the Company mitigates its foreign currency exposure on transactions with third party entities as well as intercompany transactions. The foreign currency forwards and swaps are not designated as hedges under FASB ASC Topic 815, Derivatives and Hedging ("FASB ASC Topic 815"). Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on intercompany balances are classified as 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 classified as 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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Total	802	902

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 of FASB ASC Topic 815 based on the probability at the inception and throughout the term of the contract that the Company would not settle net and the transaction would result in the physical delivery of the commodity. As such, realized gains and losses on these contracts are included in the cost of the commodity upon the settlement of the contract.

In addition, the Company occasionally enters into financial derivatives to hedge a component of a raw material or energy source. Typically, these types of transactions do not qualify for hedge accounting. These instruments are marked to market at each reporting period and gains (losses) are included in Cost of sales in the unaudited interim consolidated statements of operations. During the three months endedMarch 31, 2013 and 2012, the Company did not have any open financial derivative contracts for commodities.

Information regarding changes in the fair value of the Company’s derivative arrangements is as follows:

	Three Months Ended					Three Months Ended
	March 31, 2013					March 31, 2012
	Gain (Loss) Recognized in Other Comprehensive Income (Loss)		Gain (Loss) Recognized in Earnings (Loss)			Gain (Loss) Recognized in Other Comprehensive Income (Loss)			Gain (Loss) Recognized in Earnings (Loss)
	(In $ millions)
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	—	(1)	(4	)	(2)	(1	)	(3)	(3	)	(2)
Derivatives Not Designated as Hedges
Interest rate swaps	—		2		(4)	—			—		(4)
Foreign currency forwards and swaps	—		3		(5)	—			(4	)	(5)
Total	—		1			(1	)		(7	)

______________________________

⁽¹⁾  Amount excludes $1 million of tax expense recognized in Other comprehensive income (loss).

⁽²⁾  Amount represents reclassification from Accumulated other comprehensive income (loss), net and is included in Interest expense in the unaudited interim consolidated statements of operations.

⁽³⁾  Amount excludes $1 million of tax expense recognized in Other comprehensive income (loss).

⁽⁴⁾  Included in Interest expense 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.

See Note 16, Fair Value Measurements, for additional information regarding the fair value of the Company’s derivative arrangements.

Certain of the Company's foreign currency forwards and swaps and interest rate 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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Derivative Assets
Gross amount recognized	5	2
Gross amount offset in the consolidated balance sheets	—	—
Net amount presented in the consolidated balance sheets	5	2
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	4	—

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Derivative Liabilities
Gross amount recognized	23	32
Gross amount offset in the consolidated balance sheets	1	1
Net amount presented in the consolidated balance sheets	22	31
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	21	29

XML

Debt (Tables)

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Schedule of Short-term Debt

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Short-Term Borrowings and Current Installments of Long-term Debt - Third Party and Affiliates
Current installments of long-term debt	23	60
Short-term borrowings, including amounts due to affiliates	89	108
Total	112	168

The Company's weighted average interest rate on short-term borrowings, including amounts due to affiliates, was 4.6% as of March 31, 2013 compared to 4.0% as of December 31, 2012.

Schedule of Long-term Debt

	As of March 31, 2013		As of December 31, 2012
	(In $ millions)
Long-Term Debt
Senior credit facilities - Term C loan due 2016	967		977
Senior unsecured notes due 2018, interest rate of 6.625%	600		600
Senior unsecured notes due 2021, interest rate of 5.875%	400		400
Senior unsecured notes due 2022, interest rate of 4.625%	500		500
Credit-linked revolving facility due 2014, interest rate of 1.7%	100		50
Pollution control and industrial revenue bonds, interest rates ranging from 5.7% to 6.7%, due at various dates through 2030	169		182
Obligations under capital leases due at various dates through 2054	246		244
Other bank obligations	—		37
Subtotal	2,982		2,990
Current installments of long-term debt	(23	)	(60	)
Total	2,959		2,930

Schedule of Estimated Net Leverage Ratio and Estimated Margin

The margin for borrowings under the revolving credit facility is currently 2.5% above LIBOR or EURIBOR, as applicable, subject to increase or reduction in certain circumstances based on changes in the Company’s corporate credit ratings. Borrowings under the credit-linked revolving facility and the Term C loan facility bear interest at a variable interest rate based on LIBOR (for US dollars) or EURIBOR (for Euros), plus a margin which varies based on the Company's net leverage ratio.

The estimated net leverage ratio and margin are as follows:

	As of March 31, 2013
	Estimated Total Net Leverage Ratio	Estimated Margin
Credit-linked revolving facility	1.56	1.50	%
Term C	1.56	2.75	%

The margin on each facility may increase or decrease 0.25% based on the following:

Credit-Linked Revolving Facility		Term C Loan Facility
Total Net Leverage Ratio	Margin over LIBOR or EURIBOR	Total Net Leverage Ratio	Margin over LIBOR or EURIBOR
< = 2.25	1.50%	< = 1.75	2.75%
> 2.25	1.75%	> 1.75 and < = 2.25	3.00%
		> 2.25	3.25%

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 and credit-linked revolving facility of 0.25% and 1.50% per annum, respectively.

Schedule of First Lien Senior Secured Leverage Ratios and Borrowing Capacity

The Company’s first lien senior secured leverage ratios and the borrowing capacity under the revolving credit facility are as follows:

	As of March 31, 2013
	First Lien Senior Secured Leverage Ratio
			Estimate, if Fully Drawn	Borrowing Capacity
	Maximum	Estimate
				(In $ millions)
Revolving credit facility	3.90	0.91	1.41	600

Schedule of Balances Available for Borrowing Under the Revolving Credit Facility and the Credit-linked Revolving Facility

The balances available for borrowing are as follows:

	As of March 31, 2013
	(In $ millions)
Revolving Credit Facility
Borrowings outstanding	—
Letters of credit issued	—
Available for borrowing	600
Credit-Linked Revolving Facility
Borrowings outstanding	100
Letters of credit issued	78
Available for borrowing	50

XML

Earnings (Loss) Per Share (Schedule of Earnings (Loss) Per Share) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	$ 141	$ 193	[1]
Earnings (loss) from discontinued operations	1	0
Net earnings (loss) available to common stockholders	$ 142	$ 193	[1]
Weighted average shares - basic	159,682,386	156,576,896
Dilutive stock options	240,507	1,855,015
Dilutive restricted stock units	278,743	683,321
Weighted average shares - diluted	160,201,636	159,115,232

[1] As Adjusted (Note 1)

XML

Commitments and Contingencies

3 Months Ended

Mar. 31, 2013

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, prior acquisitions and divestitures, 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 and when determinable, the Company estimates its Possible Loss, 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.

Plumbing Actions

CNA Holdings LLC ("CNA Holdings"), a US subsidiary of the Company, which included the US business now in the Advanced Engineered Materials segment, along with Shell Oil Company ("Shell"), E.I. DuPont de Nemours and Company ("DuPont") and others, has been a defendant in a series of lawsuits, including a number of class actions, alleging that plastic resins manufactured by these companies that were utilized by others in the production of plumbing systems for residential property were defective for this use and/or contributed to the failure of such plumbing. Based on, among other things, the findings of outside experts and the successful use of the Company's acetal copolymer in similar applications, CNA Holdings does not believe the Company's acetal copolymer was defective for this use or contributed to the failure of the plumbing. In addition, in many cases CNA Holdings' potential future exposure may be limited by, among other things, statutes of limitations and repose.

In November 1995, CNA Holdings, DuPont and Shell entered into national class action settlements in the Cox, et al. v. Hoechst Celanese Corporation, et al., No. 94-0047 (Chancery Ct., Obion County, Tennessee) matter. The time to file claims against the class has expired and the entity established by the court to administer the claims was dissolved in September 2010. In addition between 1995 and 2001, CNA Holdings was named as a defendant in various putative class actions. The majority of these actions have now been dismissed. The dismissal of the remaining US case (St. Croix, Ltd., et al. v. Shell Oil Company d/b/a Shell Chemical Company, Case No. XC-97-CR-467, Virgin Islands Superior Court) was appealed in 2011. Oral argument for the appeal took place on December 13, 2012 and a decision on the appeal is expected in 2013.

As of March 31, 2013, the class actions in Canada are subject to a pending class settlement that would result in a dismissal of those cases. The Company does not believe the Possible Loss associated with the remaining matters is material. During the three months ended March 31, 2013, the Company did not record any recoveries or reductions in legal reserves related to plumbing actions to Other (charges) gains, net (Note 13) in the unaudited interim consolidated statements of operations.

Polyester Staple Antitrust Litigation

CNA Holdings, the successor in interest to Hoechst Celanese Corporation ("HCC"), Celanese Americas Corporation and Celanese GmbH (collectively, the "Celanese Entities") and Hoechst, the former parent of HCC, were named as defendants in two actions (involving multiple individual participants) filed in September 2006 by US purchasers of polyester staple fibers manufactured and sold by HCC. The actions alleged that the defendants participated in a conspiracy to fix prices, rig bids and allocate customers of polyester staple sold in the US. These actions were consolidated in a proceeding by a Multi-District Litigation Panel in the US District Court for the Western District of North Carolina styled In re Polyester Staple AntitrustLitigation, MDL 1516. On June 12, 2008 the court dismissed these actions with prejudice against all Celanese Entities in consideration of a payment by the Company. This proceeding related to sales by the polyester staple fibers business which Hoechst sold to KoSa B.V., f/k/a Arteva B.V., a subsidiary of Koch Industries, Inc. ("KoSa") in 1998. In November 2003, KoSa sought recovery from the Company (Koch Industries, Inc. et al. v. Hoechst Aktiengesellschaft et al., No. 03-cv-8679 Southern District NY) alleging a variety of claims, including indemnification and breach of representations, arising out of the 1998 sale. During the fourth quarter of 2010, the parties settled the case pursuant to a confidential agreement and the case was dismissed with prejudice.

Prior to December 31, 2008, the Company had entered into tolling arrangements with four other alleged US purchasers of polyester staple fibers manufactured and sold by the Celanese Entities. These purchasers were not included in the settlement and one such company filed suit against the Company in December 2008 (Milliken & Company v.CNA Holdings, Inc., Celanese Americas Corporation and Hoechst AG (No. 8-SV-00578 W.D.N.C.)). On September 15, 2011, the case was dismissed with prejudice based on a stipulation and proposed order of voluntary dismissal. One of the alleged US purchasers made a demand to Celanese in February 2013 but has not filed a formal claim. The Company is evaluating its options, but does not believe a Possible Loss for this matter would be material.

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. The Company filed its answer on August 8, 2012. Linde is seeking damages in the amount of $38 million for the period ended December 31, 2012, in addition to other unspecified damages. The Company believes that Linde Gas' claims lack merit and that the Company has complied with the contract terms and is vigorously defending the matter. Based on the Company's evaluation of currently available information, the Company does not believe the Possible Loss is material. The arbitral panel has bifurcated the case into a liability and damages phase and set hearing dates for all liability issues in June 2013 and for all damages issues, if necessary, in December 2013.

Award Proceedings in Relation to Domination Agreement and Squeeze-Out

The Company's subsidiary, BCP Holdings GmbH ("BCP Holdings"), a German limited liability company, is a defendant in two special award proceedings initiated by minority stockholders of Celanese GmbH seeking the court's review of the amounts (i) of the fair cash compensation and of the guaranteed dividend offered in the purchaser offer under the 2004 Domination Agreement (the "Domination Agreement") and (ii) the fair cash compensation paid for the 2006 squeeze-out ("Squeeze-Out") of all remaining stockholders of Celanese GmbH.

Pursuant to a settlement agreement between BCP Holdings and certain former Celanese GmbH stockholders, if the court sets a higher value for the fair cash compensation or the guaranteed payment under the Domination Agreement or the Squeeze-Out compensation, former Celanese GmbH stockholders who ceased to be stockholders of Celanese GmbH due to the Squeeze-Out will be entitled to claim for their shares the higher of the compensation amounts determined by the court in these different proceedings related to the Domination Agreement and the Squeeze-Out. If the fair cash compensation determined by the court is higher than the Squeeze-Out compensation of €66.99, then 1,069,465 shares will be entitled to an adjustment. If the court determines the value of the fair cash compensation under the Domination Agreement to be lower than the original Squeeze-Out compensation, but determines a higher value for the Squeeze-Out compensation, 924,078 shares would be entitled to an adjustment. Payments already received by these stockholders as compensation for their shares will be offset so that persons who ceased to be stockholders of Celanese GmbH due to the Squeeze-Out are not entitled to more than the higher of the amount set in the two court proceedings.

In September 2011, the share valuation expert appointed by the court rendered an opinion. The expert opined that the fair cash compensation for these stockholders (145,387 shares) should be increased from €41.92 to €51.86. This non-binding opinion recommends a total increase in share value of €2 million for those claims under the Domination Agreement. The opinion has no effect on the Squeeze-Out proceeding because the share price recommended is lower than the price those stockholders already received in the Squeeze-Out. However, the opinion also advocates that the guaranteed dividend should be increased from €2.89 to €3.79, aggregating an increase in total guaranteed dividends of €1 million to the Squeeze-Out claimants. The Company and plaintiffs submitted written responses arguing for alternative valuations during the three months ended December 31, 2011. On March 27, 2013, the expert issued his supplementary opinion affirming his previous calculations. The Company anticipates the court setting a hearing date to take place in the second half of 2013. No hearing date has been set. Separately, no expert has yet been appointed in the Squeeze-Out proceedings.

For those claims brought under the Domination Agreement, based on the Company's evaluation of currently available information, including the non-binding expert opinions, and the fact that the court has not yet determined the applicable valuation method, which could increase or decrease the Company's potential exposure, the Company does not believe that the Possible Loss is material.

For those remaining claims brought by the Squeeze-Out claimants, based on the Company's evaluation of currently available information, including that damages sought are unspecified, unsupported or uncertain, the matter presents meaningful legal uncertainties (including novel issues of law and the applicable valuation method), there are significant facts in dispute and the court has not yet appointed an expert, the Company cannot estimate the Possible Loss, if any, at this time.

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 March 31, 2013 are $62 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, ranging from one year to thirty years. The aggregate amount of outstanding indemnifications and guarantees provided for under these agreements is $132 million as of March 31, 2013. 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 March 31, 2013, the Company had unconditional purchase obligations of $3.3 billion which extend through 2034.

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 variable interest entities ("VIEs") as of March 31, 2013 relates primarily to early contract termination fees.

The Company's carrying value of assets and liabilities associated with its obligations to VIEs, as well as the maximum exposure to loss relating to these VIEs are as follows:

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Property, plant and equipment, net	116	118
Trade payables	43	41
Current installments of long-term debt	7	7
Long-term debt	139	140
Total	189	188
Maximum exposure to loss	273	273

The difference between the total obligations to VIEs and the maximum exposure to loss, primarily represents take-or-pay obligations for services included within the unconditional obligations discussed above.

XML

Debt (Narrative) (Details) (USD $)	1 Months Ended		3 Months Ended	12 Months Ended	1 Months Ended		3 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended	9 Months Ended		9 Months Ended
	May 31, 2011 Term B Loan Facility [Member]	Nov. 30, 2012 Term C Loan Facility [Member]	Mar. 31, 2013 Term C Loan Facility [Member]	Dec. 31, 2012 Term C Loan Facility [Member]	Nov. 30, 2012 Senior Unsecured Notes Due 2022 [Member]	May 31, 2011 Senior Unsecured Notes Due 2021 [Member]	Mar. 31, 2013 Senior Unsecured Notes Due 2021 [Member]	Dec. 31, 2012 Senior Unsecured Notes Due 2021 [Member]	Sep. 30, 2010 Senior Unsecured Notes Due 2018 [Member]	Mar. 31, 2013 Senior Unsecured Notes Due 2018 [Member]	Dec. 31, 2012 Senior Unsecured Notes Due 2018 [Member]	Sep. 30, 2010 Revolving Credit Facility [Member]	Mar. 31, 2013 Revolving Credit Facility [Member]	Sep. 30, 2010 Credit-Linked Revolving Facility [Member]	Mar. 31, 2013 Credit-Linked Revolving Facility [Member]	Dec. 31, 2012 Credit-Linked Revolving Facility [Member]	Mar. 31, 2013 Amended Credit Agreement [Member]
Debt Instrument [Line Items]
Senior notes					$ 500,000,000	$ 400,000,000			$ 600,000,000
Interest rate, stated percentage					4.625%	5.875%	5.875%	5.875%	6.625%	6.625%	6.625%
Line of credit facility, prepayment		400,000,000
Year of maturity	Apr. 02, 2014		Oct. 31, 2016	Oct. 31, 2016	Nov. 15, 2022	Jun. 15, 2021	Jun. 15, 2021	Jun. 15, 2021	Oct. 15, 2018	Oct. 15, 2018	Oct. 15, 2018
Notes redemption price					100.00%	100.00%			100.00%
Senior credit facilities	516,000,000		967,000,000	977,000,000									0		100,000,000	50,000,000
Revolving credit facility borrowing capacity												600,000,000	600,000,000	228,000,000
Credit facility, expiration date												Oct. 31, 2015		Apr. 02, 2014
Cross default covenant to other debt																	$ 40,000,000

XML

Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities
Net earnings (loss)	$ 142	$ 193	[1]
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities
Other charges (gains), net of amounts used	(4)	(4)
Depreciation, amortization and accretion	80	77
Pension and postretirement benefit expense	(5)	3	[1]
Pension and postretirement contributions	(19)	(66)	[1]
Deferred income taxes, net	(8)	(91)	[1]
(Gain) loss on disposition of businesses and assets, net	1	0
Other, net	2	72
Operating cash provided by (used in) discontinued operations	1	0
Changes in operating assets and liabilities
Trade receivables - third party and affiliates, net	(100)	(47)
Inventories	(55)	(32)
Other assets	(7)	19
Trade payables - third party and affiliates	36	123
Other liabilities	83	(32)	[1]
Net cash provided by (used in) operating activities	147	215
Investing activities
Capital expenditures on property, plant and equipment	(74)	(106)
Acquisitions, net of cash acquired	0	(23)
Proceeds from sale of businesses and assets, net	0	0
Capital expenditures related to Kelsterbach plant relocation	(3)	(21)
Other, net	(10)	(5)
Net cash provided by (used in) investing activities	(87)	(155)
Financing activities
Short-term borrowings (repayments), net	(19)	10
Proceeds from short-term debt	24	24
Repayments of short-term debt	(24)	(24)
Proceeds from long-term debt	50	0
Repayments of long-term debt	(55)	(8)
Purchases of treasury stock, including related fees	0	(20)
Stock option exercises	1	7
Series A common stock dividends	(12)	(10)
Other, net	0	0
Net cash provided by (used in) financing activities	(35)	(21)
Exchange rate effects on cash and cash equivalents	(6)	6
Net increase (decrease) in cash and cash equivalents	19	45
Cash and cash equivalents as of beginning of period	959	682
Cash and cash equivalents as of end of period	$ 978	$ 727

[1] As Adjusted (Note 1)

XML

Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net earnings (loss)	$ 142	$ 193	[1]
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0
Foreign currency translation	(31)	26
Gain (loss) on interest rate swaps	1	1
Pension and postretirement benefits	0	(4)	[1]
Total other comprehensive income (loss), net of tax	(30)	23	[1]
Total comprehensive income (loss), net of tax	112	216	[1]
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Celanese Corporation	$ 112	$ 216	[1]

[1] As Adjusted (Note 1)

XML

Benefit Obligations

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Benefit Obligations

Benefit Obligations

As discussed in Note 1, effective January 1, 2013 the Company elected to change its policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for its defined benefit pension plans and other postretirement benefit plans.  This accounting change has been applied retrospectively to all periods presented.

The components of net periodic benefit costs are as follows:

	Pension Benefits				Postretirement Benefits
	Three Months Ended March 31,
	2013		2012		2013	2012
			As Adjusted (Note 1)			As Adjusted (Note 1)
	(In $ millions)
Service cost	9		7		1	—
Interest cost	39		43		2	3
Expected return on plan assets	(56	)	(51	)	—	—
Recognized actuarial (gain) loss	—		—		—	—
Amortization of prior service cost (credit)	—		1		—	—
Curtailment (gain) loss	—		—		—	—
Total	(8	)	—		3	3

Commitments to fund benefit obligations during 2013 are as follows:

	As of March 31, 2013	Expected for 2013
	(In $ millions)
Cash contributions to defined benefit pension plans	9	30
Benefit payments to nonqualified pension plans	6	22
Benefit payments to other postretirement benefit plans	4	24

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 $2 million for the three months endedMarch 31, 2013.

XML

Consolidating Guarantor Financial Information (Schedule of Consolidating Statements of Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	$ 142	$ 193	[1]
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0
Foreign currency translation	(31)	26
Gain (loss) on interest rate swaps	1	1
Pension and postretirement benefits	0	(4)	[1]
Total other comprehensive income (loss), net of tax	(30)	23	[1]
Total comprehensive income (loss), net of tax	112	216	[1]
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Celanese Corporation	112	216	[1]
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	142	193	[1]
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0
Foreign currency translation	(31)	26
Gain (loss) on interest rate swaps	1	1
Pension and postretirement benefits	0	(4)	[1]
Total other comprehensive income (loss), net of tax	(30)	23	[1]
Total comprehensive income (loss), net of tax	112	216
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Celanese Corporation	112	216
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	141	193	[1]
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0
Foreign currency translation	(31)	26
Gain (loss) on interest rate swaps	1	1
Pension and postretirement benefits	0	(4)	[1]
Total other comprehensive income (loss), net of tax	(30)	23	[1]
Total comprehensive income (loss), net of tax	111	216
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Celanese Corporation	111	216
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	166	208	[1]
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0
Foreign currency translation	5	(11)
Gain (loss) on interest rate swaps	0	0
Pension and postretirement benefits	0	(3)	[1]
Total other comprehensive income (loss), net of tax	5	(14)	[1]
Total comprehensive income (loss), net of tax	171	194
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Celanese Corporation	171	194
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	26	22	[1]
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0
Foreign currency translation	5	(6)
Gain (loss) on interest rate swaps	0	0
Pension and postretirement benefits	0	(3)	[1]
Total other comprehensive income (loss), net of tax	5	(9)	[1]
Total comprehensive income (loss), net of tax	31	13
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Celanese Corporation	31	13
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	(333)	(423)	[1]
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0
Foreign currency translation	21	(9)
Gain (loss) on interest rate swaps	(1)	(1)
Pension and postretirement benefits	0	10	[1]
Total other comprehensive income (loss), net of tax	20	0	[1]
Total comprehensive income (loss), net of tax	(313)	(423)
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Celanese Corporation	$ (313)	$ (423)

[1] As Adjusted (Note 1)

XML

Commitments and Contingencies (Award Proceedings in Relation to Domination Agreement and Squeeze-Out Narrative) (Details) (Domination Agreement and Squeeze-Out [Member], EUR €) In Millions, except Share data, unless otherwise specified	Mar. 31, 2013
Loss Contingencies [Line Items]
Number of legal actions	2
Squeeze-out compensation, per share	€ 66.99
Domination agreement compensation, shares	145,387
Domination agreement compensation, value	€ 2
Guaranteed dividends, value	€ 1
Previous [Member]
Loss Contingencies [Line Items]
Domination agreement compensation, per share	€ 41.92
Guaranteed dividends, per share	€ 2.89
Subsequent [Member]
Loss Contingencies [Line Items]
Domination agreement compensation, per share	€ 51.86
Guaranteed dividends, per share	€ 3.79
Maximum [Member]
Loss Contingencies [Line Items]
Shares subject to adjustment	1,069,465
Minimum [Member]
Loss Contingencies [Line Items]
Shares subject to adjustment	924,078

XML

Commitments and Contingencies (Polyester Staple Antitrust Litigation Narrative) (Details)	Mar. 31, 2013 Domination Agreement and Squeeze-Out [Member]	Feb. 28, 2013 Polyester Staple Antitrust Litigation [Member]	Dec. 31, 2008 Polyester Staple Antitrust Litigation [Member]	Sep. 30, 2006 Polyester Staple Antitrust Litigation [Member]
Loss Contingencies [Line Items]
Number of legal actions	2			2
Number of tolling arrangements			4
Number of legal actions participants			1
Number of tolling arrangement participants making demand but no claim		1

XML

Document and Entity Information	3 Months Ended
	Mar. 31, 2013	Apr. 15, 2013
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	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		159,651,273
Entity Current Reporting Status	Yes

XML

Environmental

3 Months Ended

Mar. 31, 2013

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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Demerger obligations (Note 17)	28	31
Divestiture obligations (Note 17)	21	21
Active sites	26	28
US Superfund sites	15	15
Other environmental remediation reserves	4	4
Total	94	99

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, 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 Environmental Protection Agency, 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 US Environmental Protection Agency ("EPA") to perform a Remedial Investigation/Feasibility Study ("RI/FS") of the contaminants in the lower 17-mile stretch known as the Lower Passaic River Study Area. The RI/FS is ongoing and may take several more years to complete. The Company is among a group of settling parties to a June 2012 Administrative Order on Consent with the EPA to perform a removal action on a small section of the river. The Company has also been named as a third-party defendant along with more than 200 other entities in an action initially brought by the New Jersey Department of Environmental Protection ("NJDEP") in the Supreme Court of New Jersey against Occidental Chemical Corporation and several other companies. This suit by the NJDEP seeks recovery of past and future clean-up costs, as well as unspecified economic damages, punitive damages, penalties and a variety of other forms of relief arising from alleged discharges into the Lower Passaic River.

In 2007, the EPA issued a draft study that evaluated alternatives for early remedial action of a portion of the Passaic River at an estimated cost of $900 million to $2.3 billion. Several parties commented on the draft study, and the EPA has announced its intention to issue a proposed plan in 2013. Although the Company's assessment that the contamination allegedly released by the Company is likely an insignificant aspect of the final remedy, because the RI/FS is still ongoing, and the EPA has not finalized its study or the scope of requested cleanup the Company cannot reliably estimate its portion of the final remedial costs for this matter at this time. However, the Company currently believes that its portion of the costs would be less than approximately 1% to 2%. The Company is vigorously defending these and all related matters.

Environmental Proceedings

On January 7, 2013, following self-disclosures by the Company, the Company's Meredosia, Illinois site received a Notice of Violation/Finding of Violation from the US Environmental Protection Agency Region 5 ("EPA") alleging Clean Air Act violations. The Company is working with the EPA and with the state agency to reach a resolution of this matter. Based on currently available information and the Company's past experience, we do not believe that resolution of this matter will have a significant impact on the Company, even though the Company cannot conclude that a penalty will be less than $100,000. The Meredosia, Illinois site is included in the Industrial Specialties segment.

XML

Other (Charges) Gains, Net (Schedule of Restructuring Reserves) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended			3 Months Ended			3 Months Ended			3 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Employee Termination Benefits [Member]	Mar. 31, 2013 Plant/Office Closures [Member]	Mar. 31, 2013 Advanced Engineered Materials [Member]	Mar. 31, 2013 Advanced Engineered Materials [Member] Employee Termination Benefits [Member]	Mar. 31, 2013 Advanced Engineered Materials [Member] Plant/Office Closures [Member]	Mar. 31, 2013 Consumer Specialties [Member]	Mar. 31, 2013 Consumer Specialties [Member] Employee Termination Benefits [Member]	Mar. 31, 2013 Consumer Specialties [Member] Plant/Office Closures [Member]	Mar. 31, 2013 Industrial Specialties [Member]	Mar. 31, 2013 Industrial Specialties [Member] Employee Termination Benefits [Member]	Mar. 31, 2013 Industrial Specialties [Member] Plant/Office Closures [Member]	Mar. 31, 2013 Acetyl Intermediates [Member]	Mar. 31, 2013 Acetyl Intermediates [Member] Employee Termination Benefits [Member]	Mar. 31, 2013 Acetyl Intermediates [Member] Plant/Office Closures [Member]	Mar. 31, 2013 Other [Member]	Mar. 31, 2013 Other [Member] Employee Termination Benefits [Member]	Mar. 31, 2013 Other [Member] Plant/Office Closures [Member]
Restructuring Cost and Reserve [Line Items]
As of December 31, 2012	$ 25	$ 30	$ 29	$ 1	$ 5	$ 6	$ 0	$ 10	$ 13	$ 0	$ 1	$ 0	$ 0	$ 4	$ 3	$ 1	$ 5	$ 7	$ 0
Additions			2	0		0	0		0	0		1	0		1	0		0	0
Cash payments			(6)	0		(1)	0		(3)	0		0	0		0	0		(2)	0
Other changes			0	0		0	0		0	0		0	0		0	0		0	0
Exchange rate changes			0	(1)		0	0		0	0		0	0		0	(1)		0	0
As of March 31, 2013	25	30	25	0	5	5	0	10	10	0	1	1	0	4	4	0	5	5	0
Total	$ 25	$ 30	$ 25	$ 0	$ 5	$ 5	$ 0	$ 10	$ 10	$ 0	$ 1	$ 1	$ 0	$ 4	$ 4	$ 0	$ 5	$ 5	$ 0

XML

Fair Value Measurements (Schedule of Carrying Values and Fair Values of Financial Instruments) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost investments, carrying amount	$ 155	$ 156
Cost investments, fair value	0	0
Insurance contracts in nonqualified trusts, carrying amount	65	66
Insurance contracts in nonqualified trusts, fair value	65	66
Long-term debt, including current installments of long-term debt, carrying amount	2,982	2,990
Long-term debt, including current installments of long-term debt, fair value	3,095	3,130
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	65	66
Long-term debt, including current installments of long-term debt, fair value	2,850	2,886
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	$ 245	$ 244

XML

Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 978	$ 959
Trade receivables - third party and affiliates (net of allowance for doubtful accounts - 2013: $10; 2012: $9)	916	827
Non-trade receivables, net	197	209
Inventories	758	711
Deferred income taxes	50	49
Marketable securities, at fair value	49	53
Other assets	38	31
Total current assets	2,986	2,839
Investments in affiliates	796	800
Property, plant and equipment (net of accumulated depreciation - 2013: $1,536; 2012: $1,506)	3,286	3,350
Deferred income taxes	603	606
Other assets	480	463
Goodwill	762	777
Intangible assets, net	155	165
Total assets	9,068	9,000
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	112	168
Trade payables - third party and affiliates	659	649
Other liabilities	459	475
Deferred income taxes	25	25
Income taxes payable	96	38
Total current liabilities	1,351	1,355
Long-term debt	2,959	2,930
Deferred income taxes	44	50
Uncertain tax positions	180	181
Benefit obligations	1,576	1,602
Other liabilities	1,123	1,152
Commitments and contingencies
Stockholders' Equity
Preferred stock, $0.01 par value, 100,000,000 shares authorized (2013 and 2012: 0 issued and outstanding)	0	0
Treasury stock, at cost (2013: 23,986,836 shares; 2012: 23,986,836 shares)	(905)	(905)
Additional paid-in capital	736	731
Retained earnings	2,123	1,993	[1]
Accumulated other comprehensive income (loss), net	(119)	(89)	[1]
Total Celanese Corporation stockholders' equity	1,835	1,730
Noncontrolling interests	0	0
Total equity	1,835	1,730
Total liabilities and equity	9,068	9,000
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2013: 183,666,930 issued and 159,680,094 outstanding; 2012: 183,629,237 issued and 159,642,401 outstanding) [Member]
Stockholders' Equity
Common stock	0	0
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2013 and 2012: 0 issued and outstanding) [Member]
Stockholders' Equity
Common stock	$ 0	$ 0

[1] As Adjusted (Note 1)

XML

Inventories

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Inventories

Inventories

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Finished goods	560	514
Work-in-process	52	42
Raw materials and supplies	146	155
Total	758	711

XML

Marketable Securities, at Fair Value

3 Months Ended

Mar. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Marketable Securities, at Fair Value

Marketable Securities, at Fair Value

The Company’s captive insurance companies and nonqualified trusts hold available-for-sale securities for capitalization and funding requirements, respectively.

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 March 31, 2013	As of December 31, 2012
	(In $ millions)
Mutual Funds
Amortized cost	49	53
Gross unrealized gain	—	—
Gross unrealized loss	—	—
Fair value	49	53

See Note 16, Fair Value Measurements, for additional information regarding the fair value of the Company's marketable securities.

XML

Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company follows the provisions of FASB ASC Topic 820 for financial assets and liabilities. FASB ASC Topic 820 establishes a three-tiered fair value hierarchy that 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. 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.

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 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.

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 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 Using
	Balance Sheet Classification	Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)		Total
		(In $ millions)
Mutual funds	Marketable securities, at fair value	49	—		49
Derivatives Not Designated as Hedges
Foreign currency forwards and swaps	Current Other assets	—	5		5
Total assets as of March 31, 2013		49	5		54
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	Current Other liabilities	—	(10	)	(10	)
Interest rate swaps	Noncurrent Other liabilities	—	(4	)	(4	)
Derivatives Not Designated as Hedges
Interest rate swaps	Current Other liabilities	—	(5	)	(5	)
Foreign currency forwards and swaps	Current Other liabilities	—	(3	)	(3	)
Total liabilities as of March 31, 2013		—	(22	)	(22	)
Mutual funds	Marketable securities, at fair value	53	—		53
Derivatives Not Designated as Hedges
Foreign currency forwards and swaps	Current Other assets	—	2		2
Total assets as of December 31, 2012		53	2		55
Derivatives Designated as Cash Flow Hedges
Interest rate swaps	Current Other liabilities	—	(10	)	(10	)
Interest rate swaps	Noncurrent Other liabilities	—	(7	)	(7	)
Derivatives Not Designated as Hedges
Interest rate swaps	Current Other liabilities	—	(5	)	(5	)
Interest rate swaps	Noncurrent Other liabilities	—	(1	)	(1	)
Foreign currency forwards and swaps	Current Other liabilities	—	(8	)	(8	)
Total liabilities as of December 31, 2012		—	(31	)	(31	)

Carrying values and fair values of financial instruments that are not carried at fair value are as follows:

		Fair Value Measurement Using
	Carrying Amount	Significant Other Observable Inputs (Level 2)	Unobservable Inputs (Level 3)	Total
		(In $ millions)
As of March 31, 2013
Cost investments	155	—	—	—
Insurance contracts in nonqualified trusts	65	65	—	65
Long-term debt, including current installments of long-term debt	2,982	2,850	245	3,095
As of December 31, 2012
Cost investments	156	—	—	—
Insurance contracts in nonqualified trusts	66	66	—	66
Long-term debt, including current installments of long-term debt	2,990	2,886	244	3,130

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 March 31, 2013 and December 31, 2012, 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.

XML

Stockholders' Equity

3 Months Ended

Mar. 31, 2013

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.

Treasury Stock

The Company’s Board of Directors authorized the repurchase of Common Stock as follows:

	Authorized Amount
	(In $ millions)
February 2008	400
October 2008	100
April 2011	129
October 2012	264
As of March 31, 2013	893

The authorization gives management discretion in determining the timing and conditions under which shares may be repurchased. The repurchase program does not have an expiration date.

The share repurchase activity pursuant to this authorization is as follows:

	Three Months Ended March 31,				Total From February 2008 Through March 31, 2013
	2013		2012
Shares repurchased	—		444,901		13,142,527		(1)
Average purchase price per share	$	—	$	46.34	$	38.14
Amount spent on repurchased shares (in millions)	$	—	$	20	$	501

______________________________

⁽¹⁾  Excludes 5,823 shares withheld from employee to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock is considered outstanding at the time of issuance and therefore, 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 March 31,
	2013						2012
	Gross Amount		Income Tax (Provision) Benefit		Net Amount		Gross Amount			Income Tax (Provision) Benefit		Net Amount
							As Adjusted (Note 1)
	(In $ millions)
Unrealized gain (loss) on marketable securities	—		—		—		—			—		—
Foreign currency translation	(31	)	—		(31	)	26			—		26
Gain (loss) on interest rate swaps	2		(1	)	1		2			(1	)	1
Pension and postretirement benefits	—		—		—		(1	)	(1)	(3	)	(4	)
Total	(29	)	(1	)	(30	)	27			(4	)	23

______________________________

⁽¹⁾  Amount includes amortization of actuarial losses of $2 million related to the Company's equity method investments' pension plans.

Adjustments to Accumulated other comprehensive income (loss) are as follows:

	Unrealized Gain (Loss) on Marketable Securities		Foreign Currency Translation		Gain (Loss) on Interest Rate Swaps			Pension and Postretire- ment Benefits			Accumulated Other Comprehensive Income (Loss), Net
	(In $ millions)
As of December 31, 2012 - As Adjusted (Note 1)	(1	)	(23	)	(50	)		(15	)		(89	)
Other comprehensive income before reclassifications	—		(31	)	—			—			(31	)
Amounts reclassified from accumulated other comprehensive income	—		—		2		(1)	—		(2)	2
Income tax (provision) benefit	—		—		(1	)		—			(1	)
As of March 31, 2013	(1	)	(54	)	(49	)		(15	)		(119	)

______________________________

⁽¹⁾  This accumulated other comprehensive income component is related to interest rate swaps and is included in interest expense (Note 15).

⁽²⁾  This accumulated other comprehensive income component is the amortization of prior service cost included in net periodic benefit cost (Note 10).

XML

Derivative Financial Instruments (Schedule of Interest Rate Swap Derivatives) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				3 Months Ended
	Dec. 31, 2012 Swap Derivative 4 Point 92 Percent Maturing January 2, 2012 [Member]		Dec. 31, 2012 Swap Derivative 4 Point 33 Percent Maturing January 2, 2012 [Member]		Mar. 31, 2013 Swap Derivative 1 Point 71 Percent Maturing January 2, 2014 [Member]		Mar. 31, 2013 Swap Derivative 1 Point 02 Percent Maturing January 2, 2016 [Member]
Derivative [Line Items]
Notional value	$ 1,100		$ 500		$ 1,100		$ 500
Effective date	Jan. 02, 2012		Jan. 02, 2014		Jan. 02, 2012		Jan. 02, 2014
Expiration date	Jan. 02, 2014		Jan. 02, 2016		Jan. 02, 2014		Jan. 02, 2016
Fixed rate	1.71%	[1]	1.02%	[1]	1.71%	[1]	1.02%	[1]

[1] Fixes the LIBOR portion of the Company's US-dollar denominated variable rate borrowings (Note 9).

XML

Noncurrent Other Liabilities

3 Months Ended

Mar. 31, 2013

Other Liabilities, Noncurrent [Abstract]

Noncurrent Other Liabilities

Noncurrent Other Liabilities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Environmental (Note 11)	73	78
Insurance	61	58
Deferred revenue	34	36
Deferred proceeds(1)	882	909
Asset retirement obligations	25	26
Derivatives (Note 15)	4	8
Income taxes payable	3	2
Other	41	35
Total	1,123	1,152

______________________________

⁽¹⁾  Primarily relates to proceeds received from the Frankfurt, Germany Airport as part of a settlement for the Company to cease operations and sell its Kelsterbach, Germany manufacturing site, included in the Advanced Engineered Materials segment (Note 20). Such proceeds will be deferred until title transfers to the Frankfurt, Germany Airport.

XML

Goodwill and Intangible Assets, Net (Schedule of Estimated Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
2014	$ 21
2015	10
2016	7
2017	6
2018	$ 3

XML

Goodwill and Intangible Assets, Net

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets, Net

Goodwill and Intangible Assets, Net

Goodwill

	Advanced Engineered Materials		Consumer Specialties		Industrial Specialties		Acetyl Intermediates		Total
	(In $ millions)
As of December 31, 2012
Goodwill	297		249		42		189		777
Accumulated impairment losses	—		—		—		—		—
Net book value	297		249		42		189		777
Exchange rate changes	(4	)	(4	)	(1	)	(6	)	(15	)
As of March 31, 2013
Goodwill	293		245		41		183		762
Accumulated impairment losses	—		—		—		—		—
Net book value	293		245		41		183		762

Intangible Assets, Net

Finite-lived intangibles are as follows:

	Licenses		Customer- Related Intangible Assets		Developed Technology		Covenants Not to Compete and Other		Total
	(In $ millions)
Gross Asset Value
As of December 31, 2012	32		525		30		32		619
Acquisitions	—		—		—		4		4		(1)
Exchange rate changes	—		(11	)	—		—		(11	)
As of March 31, 2013	32		514		30		36		612
Accumulated Amortization
As of December 31, 2012	(16	)	(480	)	(17	)	(23	)	(536	)
Amortization	(1	)	(9	)	(1	)	—		(11	)
Exchange rate changes	—		10		—		—		10
As of March 31, 2013	(17	)	(479	)	(18	)	(23	)	(537	)
Net book value	15		35		12		13		75

______________________________

⁽¹⁾   Weighted average amortization period is 20 years.

Indefinite-lived intangibles are as follows:

	Trademarks and Trade Names
	(In $ millions)
As of December 31, 2012	82
Acquisitions	—
Exchange rate changes	(2	)
As of March 31, 2013	80

The Company’s trademarks and trade names have an indefinite life. For the three months endedMarch 31, 2013, the Company did not renew or extend any intangible assets.

Estimated amortization expense for the succeeding five fiscal years is as follows:

	(In $ millions)
2014	21
2015	10
2016	7
2017	6
2018	3

XML

Current Other Liabilities

3 Months Ended

Mar. 31, 2013

Other Liabilities, Current [Abstract]

Current Other Liabilities

Current Other Liabilities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Salaries and benefits	74	74
Environmental (Note 11)	21	21
Restructuring (Note 13)	25	30
Insurance	14	15
Asset retirement obligations	31	38
Derivatives (Note 15)	18	23
Current portion of benefit obligations	47	47
Interest	37	23
Sales and use tax/foreign withholding tax payable	18	17
Uncertain tax positions	60	65
Customer rebates	38	44
Other	76	78
Total	459	475

XML

Debt

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Debt

Debt

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Short-Term Borrowings and Current Installments of Long-term Debt - Third Party and Affiliates
Current installments of long-term debt	23	60
Short-term borrowings, including amounts due to affiliates	89	108
Total	112	168

The Company's weighted average interest rate on short-term borrowings, including amounts due to affiliates, was 4.6% as of March 31, 2013 compared to 4.0% as of December 31, 2012.

	As of March 31, 2013		As of December 31, 2012
	(In $ millions)
Long-Term Debt
Senior credit facilities - Term C loan due 2016	967		977
Senior unsecured notes due 2018, interest rate of 6.625%	600		600
Senior unsecured notes due 2021, interest rate of 5.875%	400		400
Senior unsecured notes due 2022, interest rate of 4.625%	500		500
Credit-linked revolving facility due 2014, interest rate of 1.7%	100		50
Pollution control and industrial revenue bonds, interest rates ranging from 5.7% to 6.7%, due at various dates through 2030	169		182
Obligations under capital leases due at various dates through 2054	246		244
Other bank obligations	—		37
Subtotal	2,982		2,990
Current installments of long-term debt	(23	)	(60	)
Total	2,959		2,930

Senior Notes

In November 2012, Celanese US completed an offering of $500 million in aggregate principal amount of 4.625% senior unsecured notes due 2022 (the "4.625% Notes") in a public offering registered under the Securities Act of 1933, as amended (the "Securities Act"). The 4.625% Notes are guaranteed on a senior unsecured basis by Celanese and each of the domestic subsidiaries of Celanese US that guarantee its obligations under its senior secured credit facilities (the "Subsidiary Guarantors").

The 4.625% Notes were issued under an indenture, dated May 6, 2011, as amended by a second supplemental indenture, dated November 13, 2012 (the "Second Supplemental Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. Celanese US will pay interest on the 4.625% Notes on March 15 and September 15 of each year which commenced on March 15, 2013. Prior to November 15, 2022, Celanese US may redeem some or all of the 4.625% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the Second Supplemental Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 4.625% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US.

In May 2011, Celanese US completed an offering of $400 million in aggregate principal amount of 5.875% senior unsecured notes due 2021 (the "5.875% Notes") in a public offering registered under the Securities Act. The 5.875% Notes are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors.

The 5.875% Notes were issued under an indenture and a first supplemental indenture, each dated May 6, 2011 (the "First Supplemental Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. Celanese US pays interest on the 5.875% Notes on June 15 and December 15 of each year which commenced on December 15, 2011. Prior to June 15, 2021, Celanese US may redeem some or all of the 5.875% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the First Supplemental Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 5.875% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US.

In September 2010, Celanese US completed the private placement of $600 million in aggregate principal amount of 6.625% senior unsecured notes due 2018 (the "6.625% Notes" and, together with the 4.625% Notes and the 5.875% Notes, collectively the "Senior Notes") under an indenture dated September 24, 2010 (the "Indenture") among Celanese US, Celanese, the Subsidiary Guarantors and Wells Fargo Bank, National Association, as trustee. In April 2011, Celanese US registered the 6.625% Notes under the Securities Act. Celanese US pays interest on the 6.625% Notes on April 15 and October 15 of each year which commenced on April 15, 2011. The 6.625% Notes are redeemable, in whole or in part, at any time on or after October 15, 2014 at the redemption prices specified in the Indenture. Prior to October 15, 2014, Celanese US may redeem some or all of the 6.625% Notes at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the Indenture, plus accrued and unpaid interest, if any, to the redemption date. The 6.625% Notes are senior unsecured obligations of Celanese US and rank equally in right of payment with all other unsubordinated indebtedness of Celanese US. The 6.625% Notes are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors.

The Indenture and the First and Second Supplemental Indentures 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

In September 2010, Celanese US, Celanese, and certain of the domestic subsidiaries of Celanese US entered into an amendment agreement with the lenders under Celanese US’s existing senior secured credit facilities in order to amend and restate the corresponding Credit Agreement, dated as of April 2, 2007 (as previously amended, the "Existing Credit Agreement", and as amended and restated by the amendment agreement, the "Amended Credit Agreement"). The Amended Credit Agreement consists of the Term C loan facility due 2016, the Term B loan facility due 2014, a $600 million revolving credit facility terminating in 2015 and a $228 million credit-linked revolving facility terminating in 2014.

In May 2011, Celanese US prepaid its outstanding Term B loan facility under the Amended Credit Agreement set to mature in 2014 with an aggregate principal amount of $516 million using proceeds from the 5.875% Notes and cash on hand.

In November 2012, Celanese US prepaid $400 million of its outstanding Term C loan facility under the Amended Credit Agreement set to mature in 2016 using proceeds from the 4.625% Notes.

The margin for borrowings under the revolving credit facility is currently 2.5% above LIBOR or EURIBOR, as applicable, subject to increase or reduction in certain circumstances based on changes in the Company’s corporate credit ratings. Borrowings under the credit-linked revolving facility and the Term C loan facility bear interest at a variable interest rate based on LIBOR (for US dollars) or EURIBOR (for Euros), plus a margin which varies based on the Company's net leverage ratio.

The estimated net leverage ratio and margin are as follows:

	As of March 31, 2013
	Estimated Total Net Leverage Ratio	Estimated Margin
Credit-linked revolving facility	1.56	1.50	%
Term C	1.56	2.75	%

The margin on each facility may increase or decrease 0.25% based on the following:

Credit-Linked Revolving Facility		Term C Loan Facility
Total Net Leverage Ratio	Margin over LIBOR or EURIBOR	Total Net Leverage Ratio	Margin over LIBOR or EURIBOR
< = 2.25	1.50%	< = 1.75	2.75%
> 2.25	1.75%	> 1.75 and < = 2.25	3.00%
		> 2.25	3.25%

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 and credit-linked revolving facility of 0.25% and 1.50% per annum, respectively.

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 as of April 2, 2007.

As a condition to borrowing funds or requesting letters of credit be issued under the revolving 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 first lien senior secured leverage ratios and the borrowing capacity under the revolving credit facility are as follows:

	As of March 31, 2013
	First Lien Senior Secured Leverage Ratio
			Estimate, if Fully Drawn	Borrowing Capacity
	Maximum	Estimate
				(In $ millions)
Revolving credit facility	3.90	0.91	1.41	600

The balances available for borrowing are as follows:

	As of March 31, 2013
	(In $ millions)
Revolving Credit Facility
Borrowings outstanding	—
Letters of credit issued	—
Available for borrowing	600
Credit-Linked Revolving Facility
Borrowings outstanding	100
Letters of credit issued	78
Available for borrowing	50

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 $40 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 March 31, 2013.

In anticipation of a possible change in pension accounting policy, in January 2013, the Company entered into a non-material amendment to the Amended Credit Agreement with the effect that certain computations for covenant compliance purposes will be evaluated as if the change in pension accounting policy had not occurred. The amendment also modified the Amended Credit Agreement in other, non-material respects.

XML

Debt (Schedule of Long-term Debt) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended	1 Months Ended			9 Months Ended			3 Months Ended		3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Term C Loan Facility [Member]	Dec. 31, 2012 Term C Loan Facility [Member]	Sep. 30, 2010 Senior Unsecured Notes Due 2018 [Member]	Mar. 31, 2013 Senior Unsecured Notes Due 2018 [Member]	Dec. 31, 2012 Senior Unsecured Notes Due 2018 [Member]	May 31, 2011 Senior Unsecured Notes Due 2021 [Member]	Mar. 31, 2013 Senior Unsecured Notes Due 2021 [Member]	Dec. 31, 2012 Senior Unsecured Notes Due 2021 [Member]	Nov. 30, 2012 Senior Unsecured Notes Due 2022 [Member]	Mar. 31, 2013 Senior Unsecured Notes Due 2022 [Member]	Dec. 31, 2012 Senior Unsecured Notes Due 2022 [Member]	Sep. 30, 2010 Credit-Linked Revolving Facility [Member]	Mar. 31, 2013 Credit-Linked Revolving Facility [Member]	Dec. 31, 2012 Credit-Linked Revolving Facility [Member]	Mar. 31, 2013 Pollution Control and Industrial Revenue Bonds [Member]	Dec. 31, 2012 Pollution Control and Industrial Revenue Bonds [Member]	Mar. 31, 2013 Obligations Under Capital Leases [Member]	Dec. 31, 2012 Obligations Under Capital Leases [Member]	Mar. 31, 2013 Other Bank Obligations [Member]	Dec. 31, 2012 Other Bank Obligations [Member]
Long-Term Debt
Senior credit facilities			$ 967	$ 977											$ 100	$ 50
Senior unsecured notes						600	600		400	400		500	500
Year of maturity			Oct. 31, 2016	Oct. 31, 2016	Oct. 15, 2018	Oct. 15, 2018	Oct. 15, 2018	Jun. 15, 2021	Jun. 15, 2021	Jun. 15, 2021	Nov. 15, 2022
Interest rate, stated percentage					6.625%	6.625%	6.625%	5.875%	5.875%	5.875%	4.625%
Credit facility, expiration date														Apr. 02, 2014
Credit facility, interest rate															1.70%
Other long-term debt																	169	182
Interest rate, stated percentage range, minimum																	5.70%
Interest rate, stated percentage range, maximum																	6.70%
Year of maturity, range end																	Nov. 01, 2030		Mar. 31, 2054
Capital lease obligations																			246	244
Other loans payable																					0	37
Subtotal	2,982	2,990
Current installments of long-term debt	(23)	(60)
Total	$ 2,959	$ 2,930

XML

Derivative Financial Instruments (Schedule of Notional Amounts of Foreign Currency Derivatives) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Total	$ 802	$ 902

XML

Debt (Schedule of First Lien Senior Secured Leverage Ratios and Borrowing Capacity) (Details) (Revolving Credit Facility [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2010
Debt Instrument [Line Items]
Revolving credit facility borrowing capacity	$ 600	$ 600
Ratio Maximum [Member]
Debt Instrument [Line Items]
First lien secured leverage ratio	3.90
Ratio Estimate [Member]
Debt Instrument [Line Items]
First lien secured leverage ratio	0.91
Ratio Estimate If Fully Drawn [Member]
Debt Instrument [Line Items]
First lien secured leverage ratio	1.41

XML

Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 1,605	$ 1,633
Cost of sales	(1,272)	(1,359)	[1]
Gross profit	333	274	[1]
Selling, general and administrative expenses	(106)	(126)	[1]
Amortization of intangible assets	(11)	(13)
Research and development expenses	(26)	(25)	[1]
Other (charges) gains, net	(4)	0
Foreign exchange gain (loss), net	(1)	1
Gain (loss) on disposition of businesses and assets, net	(1)	0
Operating profit (loss)	184	111	[1]
Equity in net earnings (loss) of affiliates	54	51
Interest expense	(43)	(45)
Refinancing expense	0	0
Interest income	0	1
Dividend income - cost investments	24	0
Other income (expense), net	(1)	2
Earnings (loss) from continuing operations before tax	218	120	[1]
Income tax (provision) benefit	(77)	73	[1]
Earnings (loss) from continuing operations	141	193	[1]
Earnings (loss) from operation of discontinued operations	2	0
Gain (loss) on disposition of discontinued operations	0	0
Income tax (provision) benefit from discontinued operations	(1)	0
Earnings (loss) from discontinued operations	1	0
Net earnings (loss)	142	193	[1]
Net (earnings) loss attributable to noncontrolling interests	0	0
Net earnings (loss) attributable to Celanese Corporation	142	193	[1]
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0
Cost of sales	0	0
Gross profit	0	0
Selling, general and administrative expenses	0	0
Amortization of intangible assets	0	0
Research and development expenses	0	0
Other (charges) gains, net	0	0
Foreign exchange gain (loss), net	0	0
Gain (loss) on disposition of businesses and assets, net	0	0
Operating profit (loss)	0	0
Equity in net earnings (loss) of affiliates	141	193	[1]
Interest expense	0	0
Refinancing expense	0	0
Interest income	0	0
Dividend income - cost investments	0	0
Other income (expense), net	0	0
Earnings (loss) from continuing operations before tax	141	193	[1]
Income tax (provision) benefit	1	0
Earnings (loss) from continuing operations	142	193	[1]
Earnings (loss) from operation of discontinued operations	0	0
Gain (loss) on disposition of discontinued operations	0	0
Income tax (provision) benefit from discontinued operations	0	0
Earnings (loss) from discontinued operations	0	0
Net earnings (loss)	142	193	[1]
Net (earnings) loss attributable to noncontrolling interests	0	0
Net earnings (loss) attributable to Celanese Corporation	142	193	[1]
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0
Cost of sales	0	0
Gross profit	0	0
Selling, general and administrative expenses	0	0
Amortization of intangible assets	0	0
Research and development expenses	0	0
Other (charges) gains, net	0	0
Foreign exchange gain (loss), net	0	0
Gain (loss) on disposition of businesses and assets, net	0	0
Operating profit (loss)	0	0
Equity in net earnings (loss) of affiliates	167	207	[1]
Interest expense	(47)	(48)
Refinancing expense	0	0
Interest income	14	15
Dividend income - cost investments	0	0
Other income (expense), net	0	1
Earnings (loss) from continuing operations before tax	134	175	[1]
Income tax (provision) benefit	7	18
Earnings (loss) from continuing operations	141	193	[1]
Earnings (loss) from operation of discontinued operations	0	0
Gain (loss) on disposition of discontinued operations	0	0
Income tax (provision) benefit from discontinued operations	0	0
Earnings (loss) from discontinued operations	0	0
Net earnings (loss)	141	193	[1]
Net (earnings) loss attributable to noncontrolling interests	0	0
Net earnings (loss) attributable to Celanese Corporation	141	193	[1]
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	680	640
Cost of sales	(475)	(478)	[1]
Gross profit	205	162	[1]
Selling, general and administrative expenses	(21)	(39)	[1]
Amortization of intangible assets	(4)	(5)
Research and development expenses	(16)	(15)	[1]
Other (charges) gains, net	4	1
Foreign exchange gain (loss), net	0	0
Gain (loss) on disposition of businesses and assets, net	(1)	0
Operating profit (loss)	167	104	[1]
Equity in net earnings (loss) of affiliates	37	40
Interest expense	(10)	(11)
Refinancing expense	0	0
Interest income	15	16
Dividend income - cost investments	0	0
Other income (expense), net	0	0
Earnings (loss) from continuing operations before tax	209	149	[1]
Income tax (provision) benefit	(44)	59	[1]
Earnings (loss) from continuing operations	165	208	[1]
Earnings (loss) from operation of discontinued operations	2	0
Gain (loss) on disposition of discontinued operations	0	0
Income tax (provision) benefit from discontinued operations	(1)	0
Earnings (loss) from discontinued operations	1	0
Net earnings (loss)	166	208	[1]
Net (earnings) loss attributable to noncontrolling interests	0	0
Net earnings (loss) attributable to Celanese Corporation	166	208	[1]
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	1,207	1,249
Cost of sales	(1,094)	(1,148)
Gross profit	113	101
Selling, general and administrative expenses	(85)	(87)	[1]
Amortization of intangible assets	(7)	(8)
Research and development expenses	(10)	(10)
Other (charges) gains, net	(4)	(1)
Foreign exchange gain (loss), net	(1)	1
Gain (loss) on disposition of businesses and assets, net	0	0
Operating profit (loss)	6	(4)	[1]
Equity in net earnings (loss) of affiliates	49	42
Interest expense	(16)	(18)
Refinancing expense	0	0
Interest income	1	2
Dividend income - cost investments	24	0
Other income (expense), net	(1)	1
Earnings (loss) from continuing operations before tax	63	23	[1]
Income tax (provision) benefit	(37)	(1)
Earnings (loss) from continuing operations	26	22	[1]
Earnings (loss) from operation of discontinued operations	0	0
Gain (loss) on disposition of discontinued operations	0	0
Income tax (provision) benefit from discontinued operations	0	0
Earnings (loss) from discontinued operations	0	0
Net earnings (loss)	26	22	[1]
Net (earnings) loss attributable to noncontrolling interests	0	0
Net earnings (loss) attributable to Celanese Corporation	26	22	[1]
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	(282)	(256)
Cost of sales	297	267
Gross profit	15	11
Selling, general and administrative expenses	0	0
Amortization of intangible assets	0	0
Research and development expenses	0	0
Other (charges) gains, net	(4)	0
Foreign exchange gain (loss), net	0	0
Gain (loss) on disposition of businesses and assets, net	0	0
Operating profit (loss)	11	11
Equity in net earnings (loss) of affiliates	(340)	(431)	[1]
Interest expense	30	32
Refinancing expense	0	0
Interest income	(30)	(32)
Dividend income - cost investments	0	0
Other income (expense), net	0	0
Earnings (loss) from continuing operations before tax	(329)	(420)	[1]
Income tax (provision) benefit	(4)	(3)
Earnings (loss) from continuing operations	(333)	(423)	[1]
Earnings (loss) from operation of discontinued operations	0	0
Gain (loss) on disposition of discontinued operations	0	0
Income tax (provision) benefit from discontinued operations	0	0
Earnings (loss) from discontinued operations	0	0
Net earnings (loss)	(333)	(423)	[1]
Net (earnings) loss attributable to noncontrolling interests	0	0
Net earnings (loss) attributable to Celanese Corporation	$ (333)	$ (423)	[1]

[1] As Adjusted (Note 1)

XML

Debt (Schedule of Short-term Debt) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt	$ 23	$ 60
Short-term borrowings, including amounts due to affiliates	89	108
Total	$ 112	$ 168
Weighted average interest rate	4.60%	4.00%

XML

Commitments and Contingencies (Commercial Actions Narrative) (Details) (Commercial Actions [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Commercial Actions [Member]
Loss Contingencies [Line Items]
Damages sought, amount	$ 38

XML

Current Other Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Other Liabilities, Current [Abstract]

Schedule of Current Other Liabilities

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Salaries and benefits	74	74
Environmental (Note 11)	21	21
Restructuring (Note 13)	25	30
Insurance	14	15
Asset retirement obligations	31	38
Derivatives (Note 15)	18	23
Current portion of benefit obligations	47	47
Interest	37	23
Sales and use tax/foreign withholding tax payable	18	17
Uncertain tax positions	60	65
Customer rebates	38	44
Other	76	78
Total	459	475

XML

Description of the Company and Basis of Presentation (Schedule of Changes in Accounting Policy Regarding Pension and Other Postretirement Benefits - Consolidated Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012		Dec. 31, 2012 As Previously Reported [Member]	Dec. 31, 2012 Effect of Change [Member]	Dec. 31, 2011 Effect of Change [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ 2,123	$ 1,993	[1]	$ 2,986	$ (993)	$ (760)
Accumulated other comprehensive income (loss), net	$ (119)	$ (89)	[1]	$ (1,082)	$ 993

[1] As Adjusted (Note 1)

XML

Income Taxes

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

	Three Months Ended
	March 31,
	2013		2012
			As Adjusted (Note 1)
Effective income tax rate	35	%	(61	)%

The effective income tax rate for the three months endedMarch 31, 2012 would have been 19% excluding the recognition of foreign tax credit carryforwards, partially offset by the reassessment of certain permanently reinvested foreign earnings. As compared to the three months endedMarch 31, 2012, absent the effect of these events, the increase in the effective income tax rate for the three months endedMarch 31, 2013 was primarily due to losses in jurisdictions without income tax benefit, increased earnings in high income tax jurisdictions and reassessment of the recoverability of deferred tax assets in certain jurisdictions.

During the three months ended March 31, 2012, the Company amended certain prior year income tax returns to recognize the benefit of available foreign tax credit carryforwards. As a result, the Company recognized a tax benefit of $142 million. The available foreign tax credits are subject to a ten year carryforward period and expire beginning 2014 through 2021. The Company expects to fully utilize the credits within the prescribed carryforward period.

In February 2012, the Company amended its existing joint venture and other related agreements with its venture partner in Polyplastics Company, Ltd ("Polyplastics"). The amended agreements ("Agreements"), among other items, modified certain dividend rights, resulting in a cash dividend payment to the Company of $72 million during the three months ended March 31, 2012. In addition, as a result of the Agreements, Polyplastics is required to pay certain annual dividends to the venture partners. Consequently, Polyplastics' undistributed earnings will no longer be invested indefinitely. Accordingly, the Company recognized a deferred tax liability of $38 million that was recorded to Income tax provision (benefit) in the unaudited interim consolidated statement of operations during the three months ended March 31, 2012, related to the taxable outside basis difference of its investment in Polyplastics.

On January 2, 2013, the US enacted the American Taxpayer Relief Act of 2012 (the “2012 Tax Relief Act”). The 2012 Tax Relief Act extends many expired corporate income tax provisions through 2013, including the research and development credit, the look-through treatment of payments between related controlled foreign corporations, the active financing exception and bonus depreciation, including retroactive application to January 1, 2012. These provisions did not have a significant impact on the Company.

Liabilities for uncertain tax positions and related interest and penalties are recorded in Uncertain tax positions and current Other liabilities in the unaudited consolidated balance sheets. For the three months endedMarch 31, 2013, the Company's uncertain tax positions increased $4 million due to interest and changes in uncertain tax positions in certain jurisdictions, and decreased $6 million due to exchange rate changes.

The Company's US tax returns for the years 2009 through 2011 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).

XML

Earnings (Loss) Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

Earnings (Loss) Per Share

	Three Months Ended March 31,
	2013	2012
		As Adjusted (Note 1)
	(In $ millions, except share and per share data)
Amounts Attributable to Celanese Corporation
Earnings (loss) from continuing operations	141	193
Earnings (loss) from discontinued operations	1	—
Net earnings (loss) available to common stockholders	142	193
Weighted average shares - basic	159,682,386	156,576,896
Dilutive stock options	240,507	1,855,015
Dilutive restricted stock units	278,743	683,321
Weighted average shares - diluted	160,201,636	159,115,232

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 March 31,
	2013	2012
Stock options	93,423	—
Restricted stock units	—	—
Total	93,423	—

XML

Commitments and Contingencies (Schedule of Variable Interest Entities) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Variable Interest Entity [Line Items]
Property, plant and equipment, net	$ 3,286	$ 3,350
Trade payables	659	649
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Property, plant and equipment, net	116	118
Trade payables	43	41
Current installments of long-term debt	7	7
Long-term debt	139	140
Total	189	188
Maximum exposure to loss	$ 273	$ 273

XML

Description of the Company and Basis of Presentation (Schedule of Changes in Accounting Policy Regarding Pension and Other Postretirement Benefits - Consolidated Statements of Operations) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales	$ (1,272)	$ (1,359)	[1]
Gross profit	333	274	[1]
Selling, general and administrative expenses	(106)	(126)	[1]
Research and development expenses	(26)	(25)	[1]
Operating profit (loss)	184	111	[1]
Earnings (loss) from continuing operations before tax	218	120	[1]
Income tax (provision) benefit	(77)	73	[1]
Earnings (loss) from continuing operations	141	193	[1]
Net earnings (loss)	142	193	[1]
Net earnings (loss) attributable to Celanese Corporation	142	193	[1]
Earnings (loss) per common share - basic
Continuing operations	$ 0.88	$ 1.23	[1]
Discontinued operations	$ 0.01	$ 0.00	[1]
Net earnings (loss) - basic	$ 0.89	$ 1.23	[1]
Earnings (loss) per common share - diluted
Continuing operations	$ 0.88	$ 1.21	[1]
Discontinued operations	$ 0.01	$ 0.00	[1]
Net earnings (loss) - diluted	$ 0.89	$ 1.21	[1]
As Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales		(1,363)
Gross profit		270
Selling, general and administrative expenses		(134)
Research and development expenses		(26)
Operating profit (loss)		98
Earnings (loss) from continuing operations before tax		107
Income tax (provision) benefit		76
Earnings (loss) from continuing operations		183
Net earnings (loss)		183
Net earnings (loss) attributable to Celanese Corporation		183
Earnings (loss) per common share - basic
Continuing operations		$ 1.17
Discontinued operations		$ 0.00
Net earnings (loss) - basic		$ 1.17
Earnings (loss) per common share - diluted
Continuing operations		$ 1.15
Discontinued operations		$ 0.00
Net earnings (loss) - diluted		$ 1.15
Effect of Change [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales		4
Gross profit		4
Selling, general and administrative expenses		8
Research and development expenses		1
Operating profit (loss)		13
Earnings (loss) from continuing operations before tax		13
Income tax (provision) benefit		(3)
Earnings (loss) from continuing operations		10
Net earnings (loss)		10
Net earnings (loss) attributable to Celanese Corporation		$ 10
Earnings (loss) per common share - basic
Continuing operations		$ 0.06
Discontinued operations		$ 0
Net earnings (loss) - basic		$ 0.06
Earnings (loss) per common share - diluted
Continuing operations		$ 0.06
Discontinued operations		$ 0
Net earnings (loss) - diluted		$ 0.06

[1] As Adjusted (Note 1)

XML

Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 147	$ 215
Investing activities
Capital expenditures on property, plant and equipment	(74)	(106)
Acquisitions, net of cash acquired	0	(23)
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	(3)	(21)
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	(10)	(5)
Net cash provided by (used in) investing activities	(87)	(155)
Financing activities
Short-term borrowings (repayments), net	(19)	10
Proceeds from short-term borrowings	24	24
Repayments of short-term borrowings	(24)	(24)
Proceeds from long-term debt	50	0
Repayments of long-term debt	(55)	(8)
Refinancing costs	0	0
Purchases of treasury stock, including related fees	0	(20)
Dividends to parent	0	0
Contributions from parent	0	0
Stock option exercises	1	7
Series A common stock dividends	(12)	(10)
Return of capital to parent	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(35)	(21)
Exchange rate effects on cash and cash equivalents	(6)	6
Net increase (decrease) in cash and cash equivalents	19	45
Cash and cash equivalents as of beginning of period	959	682
Cash and cash equivalents as of end of period	978	727
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	1	23
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
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
Refinancing costs	0	0
Purchases of treasury stock, including related fees	0	(20)
Dividends to parent	0	0
Contributions from parent	0	0
Stock option exercises	1	7
Series A common stock dividends	(12)	(10)
Return of capital to parent	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(11)	(23)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	(10)	0
Cash and cash equivalents as of beginning of period	10	0
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	(18)	(3)
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
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	1	1
Other, net	0	0
Net cash provided by (used in) investing activities	1	1
Financing activities
Short-term borrowings (repayments), net	20	28
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	(2)	(3)
Refinancing costs	0	0
Purchases of treasury stock, including related fees	0	0
Dividends to parent	(1)	(23)
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	17	2
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	90	135
Investing activities
Capital expenditures on property, plant and equipment	(41)	(54)
Acquisitions, net of cash acquired	0	(23)
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
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	(3)
Intercompany loan receipts (disbursements)	(20)	(28)
Other, net	(4)	(3)
Net cash provided by (used in) investing activities	(65)	(111)
Financing activities
Short-term borrowings (repayments), net	(9)	2
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	50	0
Repayments of long-term debt	(15)	(1)
Refinancing costs	0	0
Purchases of treasury stock, including related fees	0	0
Dividends to parent	(1)	(23)
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	25	(22)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	50	2
Cash and cash equivalents as of beginning of period	275	133
Cash and cash equivalents as of end of period	325	135
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	76	106
Investing activities
Capital expenditures on property, plant and equipment	(33)	(52)
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	(3)	(21)
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	(6)	(2)
Net cash provided by (used in) investing activities	(42)	(75)
Financing activities
Short-term borrowings (repayments), net	(10)	7
Proceeds from short-term borrowings	24	24
Repayments of short-term borrowings	(24)	(24)
Proceeds from long-term debt	0	0
Repayments of long-term debt	(39)	(4)
Refinancing costs	0	0
Purchases of treasury stock, including related fees	0	0
Dividends to parent	0	0
Contributions from parent	0	3
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(49)	6
Exchange rate effects on cash and cash equivalents	(6)	6
Net increase (decrease) in cash and cash equivalents	(21)	43
Cash and cash equivalents as of beginning of period	674	549
Cash and cash equivalents as of end of period	653	592
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(2)	(46)
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
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	3
Intercompany loan receipts (disbursements)	19	27
Other, net	0	0
Net cash provided by (used in) investing activities	19	30
Financing activities
Short-term borrowings (repayments), net	(20)	(27)
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	1	0
Refinancing costs	0	0
Purchases of treasury stock, including related fees	0	0
Dividends to parent	2	46
Contributions from parent	0	(3)
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(17)	16
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

XML

Income Taxes (Tables)

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Effective Tax Rate

	Three Months Ended
	March 31,
	2013		2012
			As Adjusted (Note 1)
Effective income tax rate	35	%	(61	)%

XML

Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Allowance for doubtful accounts - trade receivables	$ 10	$ 9
Accumulated depreciation	$ 1,536	$ 1,506
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	23,986,836	23,986,836
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2013: 183,666,930 issued and 159,680,094 outstanding; 2012: 183,629,237 issued and 159,642,401 outstanding) [Member]
Stockholders' Equity
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	183,666,930	183,629,237
Common stock, shares outstanding	159,680,094	159,642,401
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2013 and 2012: 0 issued and outstanding) [Member]
Stockholders' Equity
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0

XML

Derivative Financial Instruments (Schedule of Offsetting Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivative Liabilities [Abstract]
Gross amount recognized	$ 23	$ 32
Gross amount offset in the consolidated balance sheets	1	1
Net amount presented in the consolidated balance sheets	22	31
Gross amount not offset in the consolidated balance sheets	1	2
Net amount	$ 21	$ 29

XML

Acquisitions, Dispositions, Ventures and Plant Closures

3 Months Ended

Mar. 31, 2013

Acquisitions, Dispositions, Ventures and Plant Closures [Abstract]

Acquisitions, Dispositions, Ventures and Plant Closures

Acquisitions, Dispositions, Ventures and Plant Closures

Acquisitions

In January 2012, the Company completed the acquisition of certain assets from Ashland Inc., including two product lines, Vinac^® and Flexbond^®, to support the strategic growth of the Company's Emulsions business (Note 6). The acquired operations are included in the Industrial Specialties segment. Pro forma financial information since the acquisition date has not been provided as the acquisition did not have a material impact on the Company’s financial information.

The Company allocated the purchase price of the acquisitions to identifiable intangible assets acquired based on their estimated fair values. The excess of purchase price over the aggregate fair values was recorded as goodwill. Intangible assets were valued using the relief from royalty and discounted cash flow methodologies which are considered Level 3 measurements under FASB ASC Topic 820, Fair Value Measurement ("FASB ASC Topic 820"). The relief from royalty method estimates the Company’s theoretical royalty savings from ownership of the intangible asset. Key assumptions used in this model include discount rates, royalty rates, growth rates, sales projections and terminal value rates, all of which require significant management judgment and, therefore, are susceptible to change. The key assumptions used in the discounted cash flow valuation model include discount rates, growth rates, cash flow projections and terminal value rates. Discount rates, growth rates and cash flow projections are the most sensitive and susceptible to change as they require significant management judgment. The Company, with the assistance of third-party valuation consultants, calculated the fair value of the intangible assets acquired to allocate the purchase price at the acquisition date.

XML

Goodwill and Intangible Assets, Net (Schedule of Finite-Lived Intangible Assets, Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012	Dec. 31, 2012
Gross Asset Value
Acquisitions (Note 3)	$ 4	[1]
Exchange rate changes	(11)
Gross asset value	612			619
Accumulated Amortization
Amortization	(11)		(13)
Exchange rate changes	10
Accumulated amortization	(537)			(536)
Net book value	75
Weighted average life of intangible assets acquired	20 years
Licenses [Member]
Gross Asset Value
Acquisitions (Note 3)	0
Exchange rate changes	0
Gross asset value	32			32
Accumulated Amortization
Amortization	(1)
Exchange rate changes	0
Accumulated amortization	(17)			(16)
Net book value	15
Customer-Related Intangible Assets [Member]
Gross Asset Value
Acquisitions (Note 3)	0
Exchange rate changes	(11)
Gross asset value	514			525
Accumulated Amortization
Amortization	(9)
Exchange rate changes	10
Accumulated amortization	(479)			(480)
Net book value	35
Developed Technology [Member]
Gross Asset Value
Acquisitions (Note 3)	0
Exchange rate changes	0
Gross asset value	30			30
Accumulated Amortization
Amortization	(1)
Exchange rate changes	0
Accumulated amortization	(18)			(17)
Net book value	12
Covenants Not to Compete and Other [Member]
Gross Asset Value
Acquisitions (Note 3)	4
Exchange rate changes	0
Gross asset value	36			32
Accumulated Amortization
Amortization	0
Exchange rate changes	0
Accumulated amortization	(23)			(23)
Net book value	$ 13

[1] Weighted average amortization period is 20 years.

XML

Income Taxes (Schedule of Effective Tax Rate) (Details)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]
Effective income tax rate	35.00%	(61.00%)	[1]

[1] As Adjusted (Note 1)

XML

Consolidating Guarantor Financial Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2013
Consolidating Guarantor Financial Information [Abstract]
Issuer and subsidiary guarantors, ownership percentage	100.00%

XML

Benefit Obligations (Schedule of Net Periodic Benefit Costs Recognized) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9	$ 7
Interest cost	39	43
Expected return on plan assets	(56)	(51)
Recognized actuarial (gain) loss	0	0	[1]
Prior service credit	0	1	[1]
Curtailment (gain) loss	0	0
Total	(8)	0	[1]
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	0
Interest cost	2	3
Expected return on plan assets	0	0
Recognized actuarial (gain) loss	0	0
Prior service credit	0	0
Curtailment (gain) loss	0	0
Total	$ 3	$ 3

[1] As Adjusted (Note 1)

XML

Plant Relocation

3 Months Ended

Mar. 31, 2013

Plant Relocation [Abstract]

Plant Relocation

Plant Relocation

In November 2006, the Company finalized a settlement agreement with the Frankfurt, Germany Airport ("Fraport") that required the Company to cease operations at its Kelsterbach, Germany POM site and sell the site, including land and buildings, to Fraport, resolving several years of legal disputes related to the planned Fraport expansion. Under the original agreement, Fraport agreed to pay the Company a total of €670 million. The agreement requires the Company to complete certain activities no later than December 31, 2013 at which time title to the land and buildings will transfer to Fraport. The agreement did not require the proceeds from the settlement be used to build or relocate the existing POM operations; however, based on a number of factors, the Company built a new expanded production facility in the Frankfurt Hoechst Industrial Park in the Rhine Main area in Germany.

The Company received its final payment from Fraport of €110 million during the three months endedJune 30, 2011 and ceased POM operations at the Kelsterbach, Germany site prior to July 31, 2011. In September 2011, the Company announced the opening of its new POM production facility in Frankfurt Hoechst Industrial Park, Germany.

A summary of the financial statement impact associated with the Kelsterbach plant relocation is as follows:

	Three Months Ended March 31,		Total from inception through March 31, 2013
	2013	2012
	(In $ millions)
Deferred proceeds (1)	—	—	907
Costs expensed	2	—	115
Costs capitalized (2)	2	13	1,129
Lease buyout	—	—	22
Employee termination benefits	—	—	8

_____________________________

⁽¹⁾  Included in noncurrent Other liabilities in the consolidated balance sheets. Amounts reflect the US dollar equivalent at the time of receipt. Upon transfer of title to Fraport, the deferred proceeds will be recognized in the consolidated statements of operations. Such proceeds will be reduced by assets of €7 million included in Property, plant and equipment, net and €102 million included in noncurrent Other assets in the consolidated balance sheets, to be transferred to Fraport or otherwise disposed.

⁽²⁾  Includes a decrease in accrued capital expenditures of $1 million and $8 million for the three months endedMarch 31, 2013 and 2012, respectively.

XML

Environmental (Environmental Proceedings Narrative) (Details) (Meredosia, Illinios [Member], Industrial Specialties [Member], USD $)	1 Months Ended
	Jan. 31, 2013
Meredosia, Illinios [Member] | Industrial Specialties [Member]
Site Contingency [Line Items]
Environmental proceedings resolution, penalty, best estimate	$ 100,000

XML

Environmental (Tables)

3 Months Ended

Mar. 31, 2013

Environmental Remediation Obligations [Abstract]

Schedule of Environmental Remediation Reserves

The components of environmental remediation reserves are as follows:

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Demerger obligations (Note 17)	28	31
Divestiture obligations (Note 17)	21	21
Active sites	26	28
US Superfund sites	15	15
Other environmental remediation reserves	4	4
Total	94	99

XML

Other (Charges) Gains, Net

3 Months Ended

Mar. 31, 2013

Restructuring and Related Activities [Abstract]

Other (Charges) Gains, Net

Other (Charges) Gains, Net

	Three Months Ended
	March 31,
	2013		2012
	(In $ millions)
Employee termination benefits	(2	)	—
Kelsterbach plant relocation (Note 20)	(2	)	—
Total	(4	)	—

During the three months endedMarch 31, 2013, the Company recorded $2 million of employee termination benefits related to a business optimization project which is included in the Industrial Specialties and Acetyl Intermediates segments.

The changes in the restructuring reserves by business segment are as follows:

	Advanced Engineered Materials		Consumer Specialties		Industrial Specialties	Acetyl Intermediates		Other		Total
	(In $ millions)
Employee Termination Benefits
As of December 31, 2012	6		13		—	3		7		29
Additions	—		—		1	1		—		2
Cash payments	(1	)	(3	)	—	—		(2	)	(6	)
Other changes	—		—		—	—		—		—
Exchange rate changes	—		—		—	—		—		—
As of March 31, 2013	5		10		1	4		5		25
Plant/Office Closures
As of December 31, 2012	—		—		—	1		—		1
Additions	—		—		—	—		—		—
Cash payments	—		—		—	—		—		—
Other changes	—		—		—	—		—		—
Exchange rate changes	—		—		—	(1	)	—		(1	)
As of March 31, 2013	—		—		—	—		—		—
Total	5		10		1	4		5		25

XML

Plant Relocation (Narrative) (Details) In Millions, unless otherwise specified	3 Months Ended		1 Months Ended	3 Months Ended					77 Months Ended
	Mar. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Nov. 30, 2006 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] EUR (€)	Mar. 31, 2013 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] USD ($)		Mar. 31, 2012 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] USD ($)		Jun. 30, 2011 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] EUR (€)	Mar. 31, 2013 Advanced Engineered Materials [Member] Kelsterbach, Germany [Member] USD ($)
Plant Relocation [Line Items]
Proceeds originally expected under plant relocation agreement			€ 670
Deferred proceeds from Kelsterbach plant relocation	$ 0	$ 0		$ 0	[1]	$ 0	[1]	€ 110	$ 907	[1]

[1] Included in noncurrent Other liabilities in the consolidated balance sheets. Amounts reflect the US dollar equivalent at the time of receipt. Upon transfer of title to Fraport, the deferred proceeds will be recognized in the consolidated statements of operations. Such proceeds will be reduced by assets of €7 million included in Property, plant and equipment, net and €102 million included in noncurrent Other assets in the consolidated balance sheets, to be transferred to Fraport or otherwise disposed.