Celanese (CE) 10-K 10 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Feb. 06, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	CELANESE CORPORATION
Entity Central Index Key	1,306,830
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		140,926,576
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 9,438,643,905

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net sales	$ 5,389	$ 5,674	$ 6,802
Cost of sales	(3,984)	(4,356)	(5,186)
Gross profit	1,405	1,318	1,616
Selling, general and administrative expenses	(416)	(506)	(758)
Amortization of intangible assets	(9)	(11)	(20)
Research and development expenses	(78)	(119)	(86)
Other (charges) gains, net	(11)	(351)	15
Foreign exchange gain (loss), net	(1)	4	(2)
Gain (loss) on disposition of businesses and assets, net	3	(9)	(7)
Operating profit (loss)	893	326	758
Equity in net earnings (loss) of affiliates	155	181	246
Interest expense	(120)	(119)	(147)
Refinancing expense	(6)	0	(29)
Interest income	2	1	1
Dividend income - cost investments	108	107	116
Other income (expense), net	(2)	(8)	(4)
Earnings (loss) from continuing operations before tax	1,030	488	941
Income tax (provision) benefit	(122)	(201)	(314)
Earnings (loss) from continuing operations	908	287	627
Earnings (loss) from operation of discontinued operations	(3)	(3)	(11)
Gain (loss) on disposition of discontinued operations	0	0	0
Income tax (provision) benefit from discontinued operations	1	1	4
Earnings (loss) from discontinued operations	(2)	(2)	(7)
Net earnings (loss)	906	285	620
Net (earnings) loss attributable to noncontrolling interests	(6)	19	4
Net earnings (loss) attributable to Celanese Corporation	900	304	624
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	902	306	631
Earnings (loss) from discontinued operations	(2)	(2)	(7)
Net earnings (loss)	$ 900	$ 304	$ 624
Earnings (loss) per common share - basic
Continuing operations	$ 6.22	$ 2.03	$ 4.07
Discontinued operations	(0.01)	(0.01)	(0.04)
Net earnings (loss) - basic	6.21	2.02	4.03
Earnings (loss) per common share - diluted
Continuing operations	6.19	2.01	4.04
Discontinued operations	(0.01)	(0.01)	(0.04)
Net earnings (loss) - diluted	$ 6.18	$ 2	$ 4
Weighted average shares - basic	144,939,433	150,838,050	155,012,370
Weighted average shares - diluted	145,668,181	152,287,955	156,166,993

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net earnings (loss)	$ 906	$ 285	$ 620
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0	1
Foreign currency translation	(11)	(188)	(148)
Gain (loss) on cash flow hedges	5	2	40
Pension and postretirement benefits	(4)	3	(54)
Total other comprehensive income (loss), net of tax	(10)	(183)	(161)
Total comprehensive income (loss), net of tax	896	102	459
Comprehensive (income) loss attributable to noncontrolling interests	(6)	19	4
Comprehensive income (loss) attributable to Celanese Corporation	$ 890	$ 121	$ 463

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2016		Dec. 31, 2015
Current Assets
Cash and cash equivalents (variable interest entity restricted - 2016: $18; 2015: $7)	$ 638		$ 967
Trade receivables - third party and affiliates (net of allowance for doubtful accounts - 2016: $6; 2015: $6; variable interest entity restricted - 2016: $4; 2015: $6)	801		706
Non-trade receivables, net	223		285
Inventories	720		682
Deferred income taxes	0		68
Marketable securities, at fair value	30		30
Other assets	60		49
Total current assets	2,472		2,787
Investments in affiliates	852		838
Property, plant and equipment (net of accumulated depreciation - 2016: $2,239; 2015: $2,039; variable interest entity restricted - 2016: $734; 2015: $772)	3,577		3,609
Deferred income taxes	159		222
Deferred Tax Assets, Net	159
Other assets (variable interest entity restricted - 2016: $9; 2015: $13)	307		300
Goodwill	796	[1]	705
Intangible assets, net (variable interest entity restricted - 2016: $26; 2015: $27)	194		125
Total assets	8,357		8,586
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	118		513
Trade payables - third party and affiliates	625		587
Other liabilities	322		330
Deferred income taxes	0		30
Income taxes payable	12		90
Total current liabilities	1,077		1,550
Long-term debt, net of unamortized deferred financing costs	2,890		2,468
Deferred income taxes	130		136
Deferred tax liability	130
Uncertain tax positions	131		167
Benefit obligations	893		1,189
Other liabilities	215		247
Commitments and Contingencies
Stockholders' Equity
Preferred stock, $0.01 par value, 100,000,000 shares authorized (2016 and 2015: 0 issued and outstanding)	0		0
Treasury stock, at cost (2016: 26,950,910 shares; 2015: 19,916,490 shares)	(1,531)		(1,031)
Additional paid-in capital	157		136
Retained earnings	4,320		3,621
Accumulated other comprehensive income (loss), net	(358)		(348)
Total Celanese Corporation stockholders' equity	2,588		2,378
Noncontrolling interests	433		451
Total equity	3,021		2,829
Total liabilities and equity	8,357		8,586
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2016: 167,611,357 issued and 140,660,447 outstanding; 2015: 166,698,787 issued and 146,782,297 outstanding)
Stockholders' Equity
Common stock	0		0
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2016 and 2015: 0 issued and outstanding)
Stockholders' Equity
Common stock	$ 0		$ 0
[1]	There were $0 million of accumulated impairment losses as of December 31, 2016.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current Assets
Allowance for doubtful accounts - trade receivables	$ 6	$ 6
Accumulated depreciation	2,239	2,039
Cash and cash equivalents (variable interest entity restricted - 2016: $18; 2015: $7)	638	967
Trade receivables - third party and affiliates	801	706
Property, plant and equipment (net of accumulated depreciation - 2016: $2,239; 2015: $2,039; variable interest entity restricted - 2016: $734; 2015: $772)	3,577	3,609
Other assets (variable interest entity restricted - 2016: $9; 2015: $13)	307	300
Intangible assets, net (variable interest entity restricted - 2016: $26; 2015: $27)	$ 194	$ 125
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	26,950,910	19,916,490
Common stock, par value	$ 0.0001
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2016: 167,611,357 issued and 140,660,447 outstanding; 2015: 166,698,787 issued and 146,782,297 outstanding)
Stockholders' Equity
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	167,611,357	166,698,787
Common stock, shares outstanding	140,660,447	146,782,297
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2016 and 2015: 0 issued and outstanding)
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
Variable Interest Entity, Primary Beneficiary [Member]
Current Assets
Cash and cash equivalents (variable interest entity restricted - 2016: $18; 2015: $7)	$ 18	$ 7
Trade receivables - third party and affiliates	4	6
Property, plant and equipment (net of accumulated depreciation - 2016: $2,239; 2015: $2,039; variable interest entity restricted - 2016: $734; 2015: $772)	734	772
Other assets (variable interest entity restricted - 2016: $9; 2015: $13)	9	13
Intangible assets, net (variable interest entity restricted - 2016: $26; 2015: $27)	$ 26	$ 27

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Total		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, shares at Dec. 31, 2013			156,939,828	8,928,137
Balance as of the beginning of the period at Dec. 31, 2013								$ 0
Balance as of the beginning of the year at Dec. 31, 2013			$ 0	$ (361)	$ 53	$ 3,011	$ (4)
Stock option exercises, net of tax	$ 7		$ 0		7
Stock option exercises, shares			202,121
Purchases of treasury stock, shares			(4,338,488)
Purchases of treasury stock			$ 0
Stock awards, shares			99,249
Stock awards			$ 0
Purchases of treasury stock, shares	4,338,488			4,338,488
Purchases of treasury stock, including related fees	$ (250)			$ (250)
Stock-based compensation, net of tax					43
Net earnings (loss) attributable to Celanese Corporation	624					624
Series A common stock dividends						(144)
Other comprehensive income (loss), net of tax	(161)						(161)
Balance as of the end of the year at Dec. 31, 2014	2,818		$ 0	$ (611)	103	3,491	(165)
Balance as of the end of the period, shares at Dec. 31, 2014			152,902,710	13,266,625
Net earnings (loss) attributable to noncontrolling interests	(4)							(4)
(Distributions to) contributions from noncontrolling interests								264
Balance as of the end of the period at Dec. 31, 2014								260
Total equity at Dec. 31, 2014	3,078
Stock option exercises, net of tax	$ 4		$ 0		5
Stock option exercises, shares			94,147
Purchases of treasury stock, shares			(6,649,865)
Purchases of treasury stock			$ 0
Stock awards, shares			435,305
Stock awards			$ 0
Purchases of treasury stock, shares	6,640,601	[1]		6,649,865
Purchases of treasury stock, including related fees	$ (420)			$ (420)
Stock-based compensation, net of tax					28
Net earnings (loss) attributable to Celanese Corporation	304					304
Series A common stock dividends						(174)
Other comprehensive income (loss), net of tax	(183)						(183)
Balance as of the end of the year at Dec. 31, 2015	2,378		$ 0	$ (1,031)	136	3,621	(348)
Balance as of the end of the period, shares at Dec. 31, 2015			146,782,297	19,916,490
Net earnings (loss) attributable to noncontrolling interests	(19)							(19)
(Distributions to) contributions from noncontrolling interests								210
Balance as of the end of the period at Dec. 31, 2015	451							451
Total equity at Dec. 31, 2015	2,829
Stock option exercises, net of tax	$ 7		$ 0		13
Stock option exercises, shares	195,000		194,872
Purchases of treasury stock, shares			(7,034,420)
Purchases of treasury stock			$ 0
Stock awards, shares			717,698
Stock awards			$ 0
Purchases of treasury stock, shares	7,034,420			7,034,420
Purchases of treasury stock, including related fees	$ (500)			$ (500)
Stock-based compensation, net of tax					8
Net earnings (loss) attributable to Celanese Corporation	900					900
Series A common stock dividends						(201)
Other comprehensive income (loss), net of tax	(10)						(10)
Balance as of the end of the year at Dec. 31, 2016	2,588		$ 0	$ (1,531)	$ 157	$ 4,320	$ (358)
Balance as of the end of the period, shares at Dec. 31, 2016			140,660,447	26,950,910
Net earnings (loss) attributable to noncontrolling interests	6							6
(Distributions to) contributions from noncontrolling interests								(24)
Balance as of the end of the period at Dec. 31, 2016	433							$ 433
Total equity at Dec. 31, 2016	$ 3,021
[1]	The year ended December 31, 2015 excludes 9,264 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Activities
Net earnings (loss)	$ 906	$ 285	$ 620
Adjustments to reconcile net earnings (loss) to net cash provided by (used in) operating activities
Asset impairments	2	126	0
Depreciation, amortization and accretion	295	363	298
Pension and postretirement net periodic benefit cost	(54)	(52)	(113)
Pension and postretirement contributions	(350)	(63)	(223)
Actuarial (gain) loss on pension and postretirement plans	103	127	350
Pension curtailments and settlements, net	0	(3)	(78)
Deferred income taxes, net	83	42	124
(Gain) loss on disposition of businesses and assets, net	2	8	8
Stock-based compensation	31	40	46
Undistributed earnings in unconsolidated affiliates	(24)	(5)	(98)
Other, net	15	7	24
Operating cash provided by (used in) discontinued operations	2	(2)	(5)
Changes in operating assets and liabilities
Trade receivables - third party and affiliates, net	(59)	61	23
Inventories	8	62	(15)
Other assets	39	(17)	20
Trade payables - third party and affiliates	7	(111)	(13)
Other liabilities	(113)	(6)	(6)
Net cash provided by (used in) operating activities	893	862	962
Investing Activities
Capital expenditures on property, plant and equipment	(246)	(232)	(254)
Acquisitions, net of cash acquired	(178)	(6)	(10)
Proceeds from sale of businesses and assets, net	12	4	0
Capital expenditures related to Fairway Methanol LLC	0	(288)	(424)
Other, net	(27)	(36)	(17)
Net cash provided by (used in) investing activities	(439)	(558)	(705)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(352)	350	(9)
Proceeds from short-term borrowings	53	80	62
Repayments of short-term borrowings	(90)	(83)	(91)
Proceeds from long-term debt	1,509	0	387
Repayments of long-term debt	(1,127)	(24)	(626)
Purchases of treasury stock, including related fees	(500)	(420)	(250)
Stock option exercises	6	3	5
Series A common stock dividends	(201)	(174)	(144)
(Distributions to) contributions from noncontrolling interests	(24)	214	264
Other, net	(33)	(12)	(13)
Net cash provided by (used in) financing activities	(759)	(66)	(415)
Exchange rate effects on cash and cash equivalents	(24)	(51)	(46)
Net increase (decrease) in cash and cash equivalents	(329)	187	(204)
Cash and cash equivalents as of beginning of period	967	780	984
Cash and cash equivalents as of end of period	$ 638	$ 967	$ 780

Description of the Company and

Description of the Company and Basis of Presentation	12 Months Ended
	Dec. 31, 2016
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 Annual Report on Form 10-K ("Annual 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 consolidated financial statements contained in this Annual Report were prepared in accordance with accounting principles generally accepted in the United States of America ("US GAAP") for all periods presented and include the accounts of the Company, its majority owned subsidiaries over which the Company exercises control and, when applicable, variable interest entities in which the Company is the primary beneficiary. The consolidated financial statements and other financial information included in this Annual Report, unless otherwise specified, have been presented to separately show the effects of discontinued operations. 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 Annual Report. For those consolidated ventures in which the Company owns or is exposed to less than 100% of the economics, the outside stockholders' interests are shown as noncontrolling interests. The Company has reclassified certain prior period amounts to conform to the current period's presentation.

Summary of Accounting Policies

Summary of Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Accounting Policies	Summary of Accounting Policies Consolidation Principles The consolidated financial statements have been prepared in accordance with US GAAP for all periods presented and include the accounts of the Company and its majority owned subsidiaries over which the Company exercises control. All intercompany accounts and transactions have been eliminated in consolidation. Estimates and Assumptions The preparation of 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 consolidated financial statements and the reported amounts of net sales, 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. Fair Value Measurements The Company determines fair value based on the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers assumptions that market participants would use when pricing the asset or liability. Market participant assumptions are categorized by a three-tiered fair value hierarchy which prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. If a financial instrument uses inputs that fall in different levels of the hierarchy, the instrument will be categorized based upon the lowest level of input that is significant to the fair value calculation. Valuations for fund investments, such as common/collective trusts, registered investment companies and short-term investment funds, 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 levels of inputs used to measure fair value are 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 Purchase Accounting The Company recognizes the identifiable tangible and intangible assets acquired and liabilities assumed based on their estimated fair values as of the acquisition date. The excess of purchase price over the aggregate fair values is recorded as goodwill. Intangible assets are valued using the relief from royalty, multi-period excess earnings and discounted cash flow methodologies, which are considered Level 3 measurements. The relief from royalty method estimates the Company's theoretical royalty savings from ownership of the intangible asset. Key assumptions used in this method include discount rates, royalty rates, growth rates, sales projections and terminal value rates. Key assumptions used in the multi-period excess earnings method include discount rates, retention rates, growth rates, sales projections, expense projections and contributory asset charges. Key assumptions used in the discounted cash flow valuation model include discount rates, growth rates, cash flow projections and terminal value rates. All of these methodologies require significant management judgment and, therefore, are susceptible to change. The Company calculates the fair value of the identifiable tangible and intangible assets acquired and liabilities assumed to allocate the purchase price at the acquisition date. The Company may use the assistance of third-party valuation consultants. Cash and Cash Equivalents All highly liquid investments with original maturities of three months or less are considered cash equivalents. Allowance for Doubtful Accounts The Company maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company believes, based on historical results, the likelihood of actual write-offs having a material impact on financial results is low. The allowance for doubtful accounts is estimated using factors such as customer credit ratings, past collection history and general risk profile. Receivables are charged against the allowance for doubtful accounts when it is probable that the receivable will not be recovered. Inventories Inventories, including stores and supplies, are stated at the lower of cost and net realizable value. Cost for inventories is determined using the first-in, first-out ("FIFO") method. Cost includes raw materials, direct labor and manufacturing overhead. Cost for stores and supplies is primarily determined by the average cost method. Investments • Marketable Securities The cost of available-for-sale securities sold is determined using the specific identification method. • Investments in Affiliates Investments where the Company can exercise significant influence over operating and financial policies of an investee, which is generally considered when an investor owns 20% or more of the voting stock of an investee, are accounted for under the equity method of accounting. Investments where the Company does not exercise significant influence are accounted for under the cost method of accounting. The Company determined it cannot exercise significant influence over certain investments where the Company owns greater than a 20% interest due to local government investment in and influence over these entities, limitations on the Company's involvement in the day-to-day operations and the present inability of the entities to provide timely financial information prepared in accordance with US GAAP. Accordingly, these investments are accounted for under the cost method of accounting. In certain instances, the financial information of the Company's equity investees is not available on a timely basis. Accordingly, the Company records its proportional share of the investee's earnings or losses on a consistent lag of no more than one quarter . When required to assess the recoverability of its investments in affiliates, the Company estimates fair value using a discounted cash flow model. The Company may engage third-party valuation consultants to assist with this process. Property, Plant and Equipment, Net Land is recorded at historical cost. Buildings, machinery and equipment, including capitalized interest, and property under capital lease agreements, are recorded at cost less accumulated depreciation. The Company records depreciation and amortization in its consolidated statements of operations as either Cost of sales, Selling, general and administrative expenses or Research and development expenses consistent with the utilization of the underlying assets. Depreciation is calculated on a straight-line basis over the following estimated useful lives of depreciable assets: Land improvements 20 years Buildings and improvements 30 years Machinery and equipment 20 years Leasehold improvements are amortized over 10 years or the remaining life of the respective lease, whichever is shorter. Accelerated depreciation is recorded when the estimated useful life is shortened. Ordinary repair and maintenance costs, including costs for planned maintenance turnarounds, that do not extend the useful life of the asset are charged to earnings as incurred. Fully depreciated assets are retained in property and depreciation accounts until sold or otherwise disposed. In the case of disposals, assets and related depreciation are removed from the accounts, and the net amounts, less proceeds from disposal, are included in earnings. The Company assesses the recoverability of the carrying amount of its property, plant and equipment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. An impairment loss would be assessed when estimated undiscounted future cash flows from the operation and disposition of the asset group are less than the carrying amount of the asset group. Asset groups have identifiable cash flows and are largely independent of other asset groups. Measurement of an impairment loss is based on the excess of the carrying amount of the asset group over its fair value. The Company calculates the fair value using a discounted cash flow model incorporating discount rates commensurate with the risks involved for the asset group, which is classified as a Level 3 fair value measurement. 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 involve significant judgment and are based on management's estimate of current and forecasted market conditions and cost structure. Impairment losses are generally recorded to Other (charges) gains, net in the consolidated statements of operations. Goodwill and Intangible Assets, Net The Company assesses the recoverability of the carrying amount of its reporting unit goodwill and indefinite-lived intangible assets either qualitatively or quantitatively annually during the third quarter of its fiscal year using June 30 balances or whenever events or changes in circumstances indicate that the carrying amount of the asset may not be fully recoverable. The Company assesses the recoverability of finite-lived intangible assets in the same manner as for property, plant and equipment. Impairment losses are generally recorded to Other (charges) gains, net in the consolidated statements of operations. • Goodwill Recoverability of the carrying amount of goodwill is measured at the reporting unit level. In performing a quantitative analysis, the Company measures the recoverability of goodwill for each reporting unit using a discounted cash flow model incorporating discount rates commensurate with the risks involved, which is classified as a Level 3 fair value measurement. The key assumptions used in the discounted cash flow valuation model include discount rates, growth rates, tax 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. Discount rates used are similar to the rates estimated by the weighted average cost of capital ("WACC") considering any differences in company-specific risk factors. The Company may engage third-party valuation consultants to assist with this process. • Indefinite-lived Intangible Assets Management tests indefinite-lived intangible assets for impairment quantitatively utilizing the relief from royalty method under the income approach to determine the estimated fair value for each indefinite-lived intangible asset, which is classified as a Level 3 fair value measurement. The relief from royalty method estimates the Company's theoretical royalty savings from ownership of the intangible asset. The key assumptions used in this model include discount rates, royalty rates, growth rates, tax rates, sales projections and terminal value rates. Discount rates, royalty rates, growth rates and sales projections are the assumptions most sensitive and susceptible to change as they require significant management judgment. Discount rates used are similar to the rates estimated by the WACC considering any differences in company-specific risk factors. Royalty rates are established by management and are periodically substantiated by third-party valuation consultants. • Definite-lived Intangible Assets Customer-related intangible assets and other intangible assets with finite lives are amortized on a straight-line basis over their estimated useful lives, which range from three to 30 years . Derivative and Hedging Instruments The Company manages its exposures to interest rates, foreign exchange rates and commodity prices through a risk management program that includes the use of derivative financial instruments. The Company does not use derivative financial instruments for speculative trading purposes. The fair value of derivative instruments other than foreign currency forwards and swaps is recorded as an asset or liability on a net basis at the balance sheet date. • Interest Rate Risk Management To reduce the interest rate risk inherent in its 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 fix the London Interbank Offered Rate ("LIBOR") portion of the Company's US dollar denominated variable rate borrowings. Prior to December 2014, all or a portion of these interest rate swap agreements were designated as cash flow hedges. Accordingly, to the extent the cash flow hedge was effective, changes in the fair value of interest rate swaps were included in gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Hedge accounting is discontinued when the interest rate swap is no longer effective in offsetting cash flows attributable to the hedged risk, the interest rate swap expires or the cash flow hedge is dedesignated because it is no longer probable that the forecasted transaction will occur according to the original strategy. In December 2014, the Company dedesignated as cash flow hedges a notional value of $500 million US dollar interest rate swap agreements expiring January 2, 2016 . When a cash flow hedge is dedesignated and it is probable that the forecasted transaction will not occur, any related amounts previously included in Accumulated other comprehensive income (loss), net would be reclassified to earnings immediately. Mark-to-market adjustments on dedesignated interest rate swap agreements are included in Interest expense in the consolidated statements of operations through their expiration. • Foreign Exchange Risk Management Certain subsidiaries of the Company have assets and liabilities denominated in currencies other than their respective functional currencies, which creates foreign exchange risk. The Company also is exposed to foreign currency fluctuations on transactions with third-party entities as well as intercompany transactions. The Company minimizes its exposure to foreign currency fluctuations by entering into foreign currency forwards and swaps. These foreign currency forwards and swaps are not designated as hedges. Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on intercompany balances are included in Other income (expense), net in the consolidated statements of operations. Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on all other assets and liabilities are included in Foreign exchange gain (loss), net in the consolidated statements of operations. The Company uses non-derivative financial instruments that may give rise to foreign currency transaction gains or losses to hedge the foreign currency exposure of net investments in foreign operations. Accordingly, the effective portion of gains and losses from remeasurement of the non-derivative financial instrument is included in foreign currency translation within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Gains and losses are reclassified to earnings in the period the hedged investment is sold or liquidated. Prior to March 2015, the Company used cross-currency swap contracts to hedge its exposure to foreign currency exchange rate risk associated with certain intercompany loans. Under the terms of the contracts, the Company would have exchanged Euro fixed interest for US dollar fixed interest and at maturity would have exchanged Euro notional values for US dollar notional values. The terms of the contracts corresponded to the related hedged intercompany loans. The cross-currency swap contracts were designated as cash flow hedges. Accordingly, the effective portion of the unrealized gains and losses on the contracts was included in gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Gains and losses were reclassified to Interest expense in the consolidated statements of operations over the period that the hedged loans affected earnings. The Euro notional values were marked-to-market based on the current spot rate and gains and losses from remeasurement of the Euro notional values, as well as the foreign exchange impact on the intercompany loans, were included in Other income (expense), net in the consolidated statements of operations. In March 2015, the Company settled its cross-currency swap agreements. • Commodity Risk Management The Company has exposure to the prices of commodities in its procurement of certain raw materials. The Company manages its exposure to commodity risk primarily through the use of long-term supply agreements, multi-year purchasing and sales agreements and forward purchase contracts. The Company regularly assesses its practice of using forward purchase contracts and other raw material hedging instruments in accordance with changes in economic conditions. Forward purchases and swap contracts for raw materials are principally settled through physical delivery of the commodity. For qualifying contracts, the Company has elected to apply the normal purchases and normal sales exception based on the probability at the inception and throughout the term of the contract that the Company would not net settle and the transaction would result in the physical delivery of the commodity. Accordingly, realized gains and losses on these contracts are included in the cost of the commodity upon the settlement of the contract. The Company also uses commodity swaps to hedge the risk of fluctuating price changes in certain raw materials and in which physical settlement does not occur. These commodity swaps fix the variable fee component of the price of certain commodities. All or a portion of these commodity swap agreements may be designated as cash flow hedges. Accordingly, to the extent the cash flow hedge was effective, changes in the fair value of commodity swaps are included in gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Gains and losses are reclassified to earnings in the period that the hedged item affected earnings. Insurance Loss Reserves The Company has two wholly-owned insurance companies (the "Captives") that are used as a form of self-insurance for liability and workers compensation risks. Capitalization of the Captives is determined by regulatory guidelines. Premiums written are recognized as revenue based on policy periods. One of the Captives also insures certain third-party risks. The Captives use reinsurance arrangements to reduce their risks, however these arrangements do not relieve the Captives from their obligations to policyholders. The financial condition of the Captives' reinsurers are monitored to minimize exposure to insolvencies. However, failure of the reinsurers to honor their obligations could result in losses to the Captives. Claim reserves are established when sufficient information is available to indicate a specific policy is involved and the Company can reasonably estimate its liability. These reserves are based on management estimates and periodic actuarial valuations. In addition, reserves have been established to cover exposures for both known and unreported claims. Estimates of these liabilities are reviewed and updated regularly, however it is possible that actual results could differ significantly from the recorded liabilities. Asset Retirement Obligations Periodically, the Company will conclude a site no longer has an indeterminate life based on long-lived asset impairment triggering events and decisions made by the Company. Accordingly, the Company will record asset retirement obligations associated with such sites. To measure the fair value of the asset retirement obligations, the Company will use the expected present value technique, which is classified as a Level 3 fair value measurement. The expected present value technique uses a set of cash flows that represent the probability-weighted average of all possible cash flows based on the Company's judgment. The Company uses the following inputs to determine the fair value of the asset retirement obligations based on the Company's experience with fulfilling obligations of this type and the Company's knowledge of market conditions: (a) labor costs; (b) allocation of overhead costs; (c) profit on labor and overhead costs; (d) effect of inflation on estimated costs and profits; (e) risk premium for bearing the uncertainty inherent in cash flows, other than inflation; (f) time value of money represented by the risk-free interest rate commensurate with the timing of the associated cash flows; and (g) nonperformance risk relating to the liability, which includes the Company's own credit risk. The asset retirement obligations are accreted to their undiscounted values until the time at which they are expected to be settled. The Company has identified but not recognized asset retirement obligations related to certain of its existing operating facilities. Examples of these types of obligations include demolition, decommissioning, disposal and restoration activities. Legal obligations exist in connection with the retirement of these assets upon closure of the facilities or abandonment of the existing operations. However, the Company currently plans on continuing operations at these facilities indefinitely and therefore, a reasonable estimate of fair value cannot be determined at this time. In the event the Company considers plans to abandon or cease operations at these sites, an asset retirement obligation will be reassessed at that time. If certain operating facilities were to close, the related asset retirement obligations could significantly affect the Company's results of operations and cash flows. Environmental Liabilities The Company manufactures and sells a diverse line of chemical products throughout the world. Accordingly, the Company's operations are subject to various hazards incidental to the production of industrial chemicals including the use, handling, processing, storage and transportation of hazardous materials. The Company recognizes losses and accrues liabilities relating to environmental matters if available information indicates that it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Depending on the nature of the site, the Company accrues through 15 years , unless the Company has government orders or other agreements that extend beyond 15 years . The Company estimates environmental liabilities on a case-by-case basis using the most current status of available facts, existing technology, presently enacted laws and regulations and prior experience in remediation of contaminated sites. Recoveries of environmental costs from other parties are recorded as assets when their receipt is deemed probable. An environmental reserve related to cleanup of a contaminated site might include, for example, a provision for one or more of the following types of costs: site investigation and testing costs, cleanup costs, costs related to soil and water contamination resulting from tank ruptures and post-remediation monitoring costs. These undiscounted reserves do not take into account any claims or recoveries from insurance. The measurement of environmental liabilities is based on the Company's periodic estimate of what it will cost to perform each of the elements of the remediation effort. The Company utilizes third parties to assist in the management and development of cost estimates for its sites. Changes to environmental regulations or other factors affecting environmental liabilities are reflected in the consolidated financial statements in the period in which they occur. Deferred Financing Costs Deferred financing costs are amortized using a method that approximates the effective interest rate method over the term of the related debt into Interest expense in the consolidated statements of operations. Upon the extinguishment of the related debt, any unamortized deferred financing costs are immediately expensed and included in Refinancing expense in the consolidated statements of operations. Upon the modification of the related debt, a portion of unamortized deferred financing costs may be immediately expensed and included in Refinancing expense in the consolidated statements of operations. Direct costs of refinancing activities are immediately expensed and included in Refinancing expense in the consolidated statements of operations. Pension and Other Postretirement Obligations The Company recognizes a balance sheet asset or liability for each of its pension and other postretirement benefit plans equal to the plan's funded status as of a December 31 measurement date. The amounts recognized in the consolidated financial statements related to pension and other postretirement benefits are determined on an actuarial basis. 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, actuarial consultants use factors such as withdrawal and mortality rates to estimate the projected benefit obligation. The Company applies the long-term expected rate of return to the fair value of plan assets and immediately recognizes in operating results 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 pension and other postretirement plan net periodic benefit costs are recorded on a quarterly basis. The Company allocates the service cost and amortization of prior service cost (or credit) components of its pension and postretirement plans to its business segments. Interest cost, expected return on assets and net actuarial gains and losses are considered financing activities managed at the corporate level and are recorded to Other Activities. The Company believes the expense allocation appropriately matches the cost incurred for active employees to the respective business segment. 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. • Discount Rate As of the measurement date, the Company determines the appropriate discount rate used to calculate 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. In the US, the rate used to discount pension and other postretirement benefit plan liabilities is based on a yield curve developed from market data of over 300 Aa-grade non-callable bonds at the measurement date. This yield curve has discount rates that vary based on the duration of the obligations. The estimated future cash flows for the pension and other benefit obligations were matched to the corresponding rates on the yield curve to derive a weighted average discount rate. The Company determines its discount rates in the Euro zone using the iBoxx Euro Corporate AA Bond indices with appropriate adjustments for the duration of the plan obligations. In other international locations, the Company determines its discount rates based on the yields of high quality government bonds with a duration appropriate to the duration of the plan obligations. • Change in estimate regarding pension and other postretirement benefits Beginning in 2016, the Company elected to change the method used to estimate the service and interest cost components of net periodic benefit cost for its significant defined benefit pension plans and other postretirement benefit plans. Previously, the Company estimated the service and interest cost components utilizing a single weighted average discount rate derived from the yield curve used to measure the benefit obligation at the beginning of the period. The Company has elected to use a full yield curve approach in the estimation of these components of net periodic benefit cost by applying the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flows. This change improves the correlation between projected benefit cash flows and the corresponding yield curve spot rates and provides a more precise measurement of service and interest costs. This change does not affect the measurement of the Company's total benefit obligations as the change in service and interest cost will be completely offset in the annual actuarial (gain) loss reported. The Company has accounted for this change as a change in estimate and, accordingly, has accounted for it prospectively beginning in 2016. • Expected Long-Term Rate of Return on Assets The Company determines 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. The expected rate of return is assessed annually and is based on long-term relationships among major asset classes and the level of incremental returns that can be earned by the successful implementation of different active investment management strategies. Equity returns are based on estimates of long-term inflation rate, real rate of return, 10-year Treasury bond premium over cash and historical equity risk premium. Fixed income returns are based on maturity, historical long-term inflation, real rate of return and credit spreads. • Investment Policies and Strategies The investment objectives for the Company's pension plans are to earn, over a moving twenty-year period, a long-term expected rate of return, net of investment fees and transaction costs, sufficient to satisfy the benefit obligations of the plan, while at the same time maintaining adequate liquidity to pay benefit obligations and proper expenses, and meet any other cash needs, in the short- to medium-term. The equity and debt securities objectives are to provide diversified exposure across the US and global equity markets and to manage the risks and returns of the plans through the use of multiple managers and strategies. The fixed income strategy is designed to reduce liability-related interest rate risk by investing in bonds that match the duration and credit quality of the plan liabilities. Derivatives-based strategies may be used to mitigate investment risks. The financial objectives of the qualified pension plans are established in conjunction with a comprehensive review of each plan's liability structure. The Company's asset allocation policy is based on detailed asset/liability analysis. In developing investment policy and financial goals, consideration is given to each plan's demographics, the returns and risks associated with current and alternative investment strategies and the current and projected cash, expense and f

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements The following table provides a brief description of recent Accounting Standard Updates ("ASU") issued by the Financial Accounting Standards Board ("FASB"): Standard Description Effective Date Effect on the Financial Statements or Other Significant Matters In October 2016, the FASB issued ASU 2016-16, Intra-Entity Transfers of Assets Other Than Inventory . The new guidance requires the income tax consequences of an intra-entity transfer of assets other than inventory to be recognized when the transfer occurs rather than deferring until an outside sale has occurred. January 1, 2018. Early adoption is permitted. The Company does not expect adoption will have a material impact on its financial statements and related disclosures. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments. The new guidance clarifies the presentation and classification of certain cash receipts and cash payments in the statement of cash flows. January 1, 2018. Early adoption is permitted. The Company does not expect adoption will have a material impact on its financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting . The new guidance simplifies several aspects of the accounting for share-based payment transactions, including the timing of recognizing income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. January 1, 2017. Early adoption is permitted. The Company does not expect adoption will have a material impact on its financial statements and related disclosures. In February 2016, the FASB issued ASU 2016-02, Leases . The new guidance supersedes the lease guidance under FASB Accounting Standards Codification ("ASC") Topic 840, Leases , resulting in the creation of FASB ASC Topic 842, Leases . The guidance requires a lessee to recognize in the statement of financial position a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term for both finance and operating leases. January 1, 2019. Early adoption is permitted. The Company is currently evaluating its population of leases, and is continuing to assess all potential impacts of the standard, but currently believes the most significant impact relates to its accounting for manufacturing and logistics equipment, and real estate operating leases. The Company anticipates recognition of additional assets and corresponding liabilities related to leases upon adoption. The Company plans to adopt the standard effective January 1, 2019. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes . The new guidance requires deferred tax liabilities and assets to be classified as noncurrent in a classified statement of financial position. January 1, 2017. Early adoption is permitted. The Company elected to early adopt the new guidance prospectively during the three months ended March 31, 2016 in accordance with the FASB's disclosure simplification initiatives. The adoption of this ASU resulted in a reclassification from current to noncurrent deferred tax assets and deferred tax liabilities as of March 31, 2016 of $68 million and $30 million, respectively. Prior periods were not adjusted. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . Since that date, the FASB has issued additional ASUs clarifying certain aspects of ASU 2014-09. The new guidance requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The new guidance provides alternative methods of adoption. Subsequent guidance issued after May 2014 did not change the core principle of ASU 2014-09. January 1, 2018. Earlier adoption was permitted, but not before December 15, 2016. The Company is currently scoping its revenue contracts to assess the potential impact on its consolidated financial statements. The Company plans to adopt the revenue guidance effective January 1, 2018, although it has not yet selected a transition method. The Company currently does not expect the adoption to have a material impact on its consolidated financial statements and related disclosures. Further, it does not expect to change the manner or timing of recognizing revenue as a majority of its revenue transactions are recognized when product is delivered.

Acquisitions, Dispositions and

Acquisitions, Dispositions and Plant Closures	12 Months Ended
	Dec. 31, 2016
Acquisitions, Dispositions and Plant Closures [Abstract]
Acquisitions, Dispositions and Plant Closures [Text Block]	Acquisitions, Dispositions and Plant Closures Acquisitions • SO.F.TER. S.p.A. On December 1, 2016, the Company acquired 100% of the stock of the Forli, Italy based SO.F.TER. S.p.A. ("SOFTER"), a leading thermoplastic compounder. The acquisition of SOFTER increases the Company's global engineered materials product platforms, extends the operational model, technical and industry solutions capabilities and expands project pipelines. The acquisition was accounted for as a business combination and the acquired operations are included in the Advanced Engineered Materials segment. Pro forma financial information since the respective 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 acquisition to identifiable assets acquired and liabilities assumed based on their estimated fair values as of the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill ( Note 2 and Note 11 ). The Company calculated the fair value of the assets acquired using the income, market, or cost approach (or a combination thereof). Fair values were determined based on Level 3 inputs ( Note 2 ) including estimated future cash flows, discount rates, royalty rates, growth rates, sales projections, retention rates and terminal values, all of which require significant management judgment and are susceptible to change. The purchase price allocation is based upon preliminary information and is subject to change if additional information about the facts and circumstances that existed at the acquisition date becomes available. The final fair value of the net assets acquired may result in adjustments to the assets and liabilities, including goodwill. However, any subsequent measurement period adjustments are not expected to have a material impact on the Company's results of operations. The preliminary purchase price allocation for the SOFTER acquisition is as follows: As of December 1, 2016 (In $ millions) Cash and cash equivalents 11 Trade receivables - third party and affiliates 53 Inventories 58 Property, plant and equipment, net 68 Intangible assets ( Note 11 ) 79 Goodwill ( Note 11 ) (1) 106 Other assets (2) 33 Total fair value of assets acquired 408 Trade payables - third party and affiliates (41 ) Total debt ( Note 14 ) (103 ) Deferred income taxes (30 ) Other liabilities (45 ) Total fair value of liabilities assumed (219 ) Net assets acquired 189 ______________________________ (1) Goodwill consists of expected revenue and operating synergies resulting from the acquisition. None of the goodwill is deductible for income tax purposes. (2) Includes a $23 million indemnity receivable for uncertain tax positions related to the acquisition. Transaction related costs of $3 million were expensed as incurred to Selling, general and administrative expenses in the consolidated statements of operations. The amount of pro forma Net earnings (loss) of SOFTER included in the Company's consolidated statement of operations was approximately 2% (unaudited) of its consolidated Net earnings (loss) had the acquisition occurred as of the beginning of 2016. The amount of SOFTER Net earnings (loss) consolidated by the Company since the acquisition date was not material. • Cool Polymers In October 2014, the Company completed the acquisition of substantially all of the assets of Cool Polymers, Inc., including CoolPoly ® , a portfolio of thermally conductive polymers for cash plus contingent consideration ( Note 25 ), to support the strategic growth of the Company's engineered materials business. The acquired operations are included in the Company's Advanced Engineered Materials segment. Pro forma financial information since the respective 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 acquisition to identifiable assets acquired and liabilities assumed based on their estimated fair values as of the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill ( Note 2 ). Plant Closures • Lanaken, Belgium In December 2015, the Company announced it had ceased 50% of its manufacturing operations at its acetate tow facility in Lanaken, Belgium. The exit costs related to the capacity reduction at its Lanaken facility are included in Other (charges) gains, net in the consolidated statements of operations ( Note 18 ). The Lanaken, Belgium operations are included in the Company's Consumer Specialties segment. • Tarragona, Spain In December 2015, the Company announced the sale of its conventional emulsions production facility. The Company was unable to find a credible buyer for the vinyl acetate ethylene ("VAE") emulsions facility, resulting in its closure. The Company completed the information and consultation process with employee representatives pursuant to which the Company ceased all manufacturing operations at the VAE emulsions facility. The exit costs, including long-lived asset impairment losses, related to the closure of the Tarragona VAE facility and the sale of the conventional facility are included in Other (charges) gains, net in the consolidated statements of operations ( Note 18 ). The Tarragona, Spain operations are included in the Company's Industrial Specialties segment. • Meredosia, Illinois In December 2015, the Company ceased operation of its VAE emulsions facility in Meredosia, Illinois. The exit costs, including long-lived asset impairment losses, related to the closure of the VAE facility are included in Other (charges) gains, net in the consolidated statements of operations ( Note 18 ). The Meredosia, Illinois operations are included in the Company's Industrial Specialties segment. During the year ended December 31, 2015, the Company also recorded $39 million in accelerated depreciation expense related to property, plant and equipment no longer in use at the Company's ethanol technology development unit in Clear Lake, Texas. The accelerated depreciation is included in Research and development expenses in the consolidated statements of operations and is included in the Company's Acetyl Intermediates segment.

Ventures and Variable Interest

Ventures and Variable Interest Entities	12 Months Ended
	Dec. 31, 2016
Ventures and Variable Interest Entities [Abstract]
Ventures and Variable Interest Entities	Ventures and Variable Interest Entities Consolidated Variable Interest Entities In February 2014, the Company formed a joint venture, Fairway Methanol LLC ("Fairway"), with Mitsui & Co., Ltd., of Tokyo, Japan ("Mitsui"), in which the Company owns 50% of Fairway, for the production of methanol at the Company's integrated chemical plant in Clear Lake, Texas. The methanol unit utilizes natural gas in the US Gulf Coast region as a feedstock and benefits from the existing infrastructure at the Company's Clear Lake facility. Both Mitsui and the Company supply their own natural gas to Fairway in exchange for methanol tolling under a cost-plus off-take arrangement. The Company determined that Fairway is a variable interest entity ("VIE") in which the Company is the primary beneficiary. Under the terms of the joint venture agreements, the Company provides site services and day-to-day operations for the methanol facility. In addition, the joint venture agreements provide that the Company indemnifies Mitsui for environmental obligations that exceed a specified threshold, as well as an equity option between the partners. Accordingly, the Company consolidates the venture and records a noncontrolling interest for the share of the venture owned by Mitsui. Fairway is included in the Company's Acetyl Intermediates segment. The carrying amount of the assets and liabilities associated with Fairway included in the consolidated balance sheets are as follows: As of December 31, 2016 2015 (In $ millions) Cash and cash equivalents 18 7 Trade receivables, net - third party & affiliates 8 12 Property, plant and equipment (net of accumulated depreciation - 2016: $50; 2015: $10) 734 772 Intangible assets (net of accumulated amortization - 2016: $1; 2015: $0) 26 27 Other assets 9 13 Total assets (1) 795 831 Trade payables 15 9 Other liabilities (2) 2 5 Total debt 5 5 Deferred income taxes 2 2 Total liabilities 24 21 ______________________________ (1) Assets can only be used to settle the obligations of Fairway. (2) Primarily represents amounts owed by Fairway to the Company for reimbursement of expenditures. Nonconsolidated Variable Interest Entities The Company holds variable interests in entities that supply certain raw materials and services to the Company. The variable interests primarily relate to cost-plus contractual arrangements with the suppliers and recovery of capital expenditures for certain plant assets plus a rate of return on such assets. Liabilities for such supplier recoveries of capital expenditures have been recorded as capital lease obligations. The entities are not consolidated because the Company is not the primary beneficiary of the entities as it does not have the power to direct the activities of the entities that most significantly impact the entities' economic performance. The Company's maximum exposure to loss as a result of its involvement with these VIEs as of December 31, 2016 relates primarily to the recovery of capital expenditures for certain property, plant and equipment. The carrying amount of the assets and liabilities associated with the obligations to nonconsolidated VIEs, as well as the maximum exposure to loss relating to these nonconsolidated VIEs are as follows: As of December 31, 2016 2015 (In $ millions) Property, plant and equipment, net 60 73 Trade payables 53 47 Current installments of long-term debt 10 10 Long-term debt 91 109 Total liabilities 154 166 Maximum exposure to loss 240 268 The difference between the total liabilities associated with obligations to unconsolidated VIEs and the maximum exposure to loss primarily represents take-or-pay obligations for services included in the Company's unconditional purchase obligations ( Note 24 ).

Marketable Securities, at Fair

Marketable Securities, at Fair Value	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Marketable Securities, at Fair Value	Marketable Securities, at Fair Value The Company's nonqualified trusts hold available-for-sale securities for funding requirements of the Company's nonqualified pension plans ( Note 15 ) as follows: As of December 31, 2016 2015 (In $ millions) Amortized cost 30 30 Gross unrealized gain — — Gross unrealized loss — — Fair value 30 30

Receivables, Net

Receivables, Net	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Receivables, Net	Receivables, Net As of December 31, 2016 2015 (In $ millions) Trade receivables - third party and affiliates 807 712 Allowance for doubtful accounts - third party and affiliates (6 ) (6 ) Trade receivables - third party and affiliates, net 801 706 As of December 31, 2016 2015 (In $ millions) Non-income taxes receivable 83 121 Reinsurance receivables 16 18 Income taxes receivable 43 79 Other 81 67 Non-trade receivables, net 223 285

Inventories

Inventories	12 Months Ended
	Dec. 31, 2016
Inventory Disclosure [Abstract]
Inventories	Inventories As of December 31, 2016 2015 (In $ millions) Finished goods 506 498 Work-in-process 45 43 Raw materials and supplies 169 141 Total 720 682

Investments in Affiliates

Investments in Affiliates	12 Months Ended
	Dec. 31, 2016
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Investments in Affiliates	Investments in Affiliates Entities in which the Company has an investment accounted for under the cost or equity method of accounting are considered affiliates; any transactions or balances with such companies are considered affiliate transactions. Equity Method Equity method investments and ownership interests by business segment are as follows: Ownership December 31, Carrying December 31, Share of December 31, Dividends and December 31, 2016 2015 2016 2015 2016 2015 2014 2016 2015 2014 (In percentages) (In $ millions) Advanced Engineered Materials Ibn Sina 25 25 113 87 38 88 115 (18 ) (98 ) (85 ) Fortron Industries LLC 50 50 100 100 9 11 9 (9 ) (8 ) (7 ) Korea Engineering Plastics Co., Ltd. 50 50 137 127 25 16 10 (11 ) (10 ) (16 ) Polyplastics Co., Ltd. 45 45 156 168 50 35 27 (54 ) (20 ) (3 ) Other Activities (1) InfraServ GmbH & Co. Gendorf KG 39 39 38 37 7 7 9 (5 ) (5 ) (7 ) InfraServ GmbH & Co. Hoechst KG (2) 32 32 132 147 22 21 72 (30 ) (32 ) (26 ) InfraServ GmbH & Co. Knapsack KG 27 27 18 18 4 4 4 (4 ) (3 ) (4 ) Consumer Specialties Sherbrooke Capital Health and Wellness, L.P. (3) 10 10 3 3 — (1 ) — — — — Total 697 687 155 181 246 (131 ) (176 ) (148 ) ______________________________ (1) InfraServ real estate service companies ("InfraServ Entities") own and operate sites in Frankfurt am Main-Hoechst, Gendorf and Knapsack, Germany. The InfraServ Entities were created to own land and property and to provide various technical and administrative services at these manufacturing locations. (2) InfraServ GmbH & Co. Hoechst KG is owned primarily by an entity included in the Company's Other Activities. The Company's Consumer Specialties segment and Acetyl Intermediates segment also each hold an ownership percentage. During the three months ended June 30, 2014, InfraServ GmbH & Co. Hoechst KG restructured the debt of a subsidiary resulting in additional equity in net earnings of affiliates of $48 million . (3) The Company accounts for its ownership interest in Sherbrooke Capital Health and Wellness, L.P. under the equity method of accounting because the Company is able to exercise significant influence. Cost Method Cost method investments and ownership interests by business segment are as follows: Ownership December 31, Carrying December 31, Dividend December 31, 2016 2015 2016 2015 2016 2015 2014 (In percentages) (In $ millions) Consumer Specialties Kunming Cellulose Fibers Co. Ltd. 30 30 14 14 14 14 15 Nantong Cellulose Fibers Co. Ltd. 31 31 106 106 80 79 87 Zhuhai Cellulose Fibers Co. Ltd. 30 30 30 22 13 13 13 Other Activities InfraServ GmbH & Co. Wiesbaden KG 8 8 5 5 1 1 1 Other — 4 — — — Total 155 151 108 107 116 Transactions with Affiliates The Company owns manufacturing facilities at the InfraServ location in Frankfurt am Main-Hoechst, Germany and has contractual agreements with the InfraServ Entities and certain other equity affiliates and investees accounted for under the cost method. These contractual agreements primarily relate to energy purchases, site services and purchases of product for consumption and resale. Transactions and balances with affiliates are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Purchases 203 195 231 Sales 2 — — As of December 31, 2016 2015 (In $ millions) Non-trade receivables 26 23 Total due from affiliates 26 23 Short-term borrowings (1) 17 16 Trade payables 45 34 Current Other liabilities 8 6 Total due to affiliates 70 56 ______________________________ (1) The Company has agreements with certain affiliates whereby excess affiliate cash is lent to and managed by the Company at variable interest rates governed by those agreements.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net As of December 31, 2016 2015 (In $ millions) Land 38 39 Land improvements 70 60 Buildings and building improvements 695 679 Machinery and equipment 4,753 4,609 Construction in progress 260 261 Gross asset value 5,816 5,648 Accumulated depreciation (2,239 ) (2,039 ) Net book value 3,577 3,609 Assets under capital leases, net, included in the amounts above are as follows: As of December 31, 2016 2015 (In $ millions) Buildings 13 13 Machinery and equipment 291 289 Accumulated depreciation (149 ) (138 ) Net book value 155 164 Capitalized interest costs and depreciation expense are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Capitalized interest 5 15 16 Depreciation expense 281 346 272 During 2016 and 2015 , certain long-lived assets were impaired ( Note 18 ). No long-lived assets were impaired during 2014 .

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	12 Months Ended
	Dec. 31, 2016
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, 2014 295 240 41 173 749 Acquisitions ( Note 4 ) — — — — — Exchange rate changes (13 ) (10 ) (2 ) (19 ) (44 ) As of December 31, 2015 282 230 39 154 705 Acquisitions ( Note 4 ) 106 — — — 106 Exchange rate changes (3 ) (5 ) (1 ) (6 ) (15 ) As of December 31, 2016 (1) 385 225 38 148 796 ______________________________ (1) There were $0 million of accumulated impairment losses as of December 31, 2016 . In connection with the Company's annual goodwill impairment assessment, the Company did not record an impairment loss to goodwill during the nine months ended September 30, 2016 as the estimated fair value for each of the Company's reporting units exceeded the carrying amount of the underlying assets by a substantial margin ( Note 2 ). No events or changes in circumstances occurred during the three months ended December 31, 2016 that would indicate that the carrying amount of the assets may not be fully recoverable. Accordingly, no additional impairment analysis was performed during that period. Intangible Assets, Net Finite-lived intangible assets 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, 2014 32 495 33 49 609 Acquisitions ( Note 5 ) 7 — 2 1 10 (1) Exchange rate changes (1 ) (39 ) — — (40 ) As of December 31, 2015 38 456 35 50 579 Acquisitions ( Note 4 ) — 64 — 3 67 (2) Exchange rate changes (2 ) (11 ) — — (13 ) As of December 31, 2016 36 509 35 53 633 Accumulated Amortization As of December 31, 2014 (23 ) (483 ) (23 ) (27 ) (556 ) Amortization (3 ) (4 ) (2 ) (2 ) (11 ) Exchange rate changes 1 38 — — 39 As of December 31, 2015 (25 ) (449 ) (25 ) (29 ) (528 ) Amortization (3 ) (2 ) (2 ) (2 ) (9 ) Exchange rate changes 1 11 1 — 13 As of December 31, 2016 (27 ) (440 ) (26 ) (31 ) (524 ) Net book value 9 69 9 22 109 ______________________________ (1) Primarily related to intangible assets acquired by Fairway ( Note 5 ) during the year ended December 31, 2015, with a weighted average amortization period of 16 years . (2) Primarily related to intangible assets acquired from SOFTER ( Note 4 ) during the year ended December 31, 2016, with a weighted average amortization period of 12 years . Indefinite-lived intangible assets are as follows: Trademarks and Trade Names (In $ millions) As of December 31, 2014 79 Acquisitions ( Note 4 ) — Impairment loss ( Note 2 ) — Exchange rate changes (5 ) As of December 31, 2015 74 Acquisitions ( Note 4 ) 12 Impairment loss ( Note 2 ) — Exchange rate changes (1 ) As of December 31, 2016 85 In connection with the Company's annual indefinite-lived intangible assets impairment assessment, the Company did not record an impairment loss to indefinite-lived intangible assets during the nine months ended September 30, 2016 as the estimated fair value for each of the Company's indefinite-lived intangible assets exceeded the carrying amount of the underlying asset by a substantial margin ( Note 2 ). No events or changes in circumstances occurred during the three months ended December 31, 2016 that would indicate that the carrying amount of the assets may not be fully recoverable. Accordingly, no additional impairment analysis was performed during that period. The Company's trademarks and trade names have an indefinite life. For the year ended December 31, 2016 , the Company did not renew or extend any intangible assets. Estimated amortization expense for the succeeding five fiscal years is as follows: (In $ millions) 2017 14 2018 12 2019 10 2020 8 2021 8

Current Other Liabilities

Current Other Liabilities	12 Months Ended
	Dec. 31, 2016
Other Liabilities, Current [Abstract]
Current Other Liabilities	Current Other Liabilities As of December 31, 2016 2015 (In $ millions) Asset retirement obligations 9 10 Benefit obligations ( Note 15 ) 31 31 Customer rebates 51 45 Derivatives ( Note 22 ) 3 2 Environmental ( Note 16 ) 14 11 Insurance 6 10 Interest 15 16 Restructuring ( Note 18 ) 16 30 Salaries and benefits 97 109 Sales and use tax/foreign withholding tax payable 21 13 Other 59 53 Total 322 330

Noncurrent Other Liabilities

Noncurrent Other Liabilities	12 Months Ended
	Dec. 31, 2016
Other Liabilities, Noncurrent [Abstract]
Noncurrent Other Liabilities	Noncurrent Other Liabilities As of December 31, 2016 2015 (In $ millions) Asset retirement obligations 20 26 Deferred proceeds 41 43 Deferred revenue 9 13 Environmental ( Note 16 ) 50 61 Income taxes payable 6 7 Insurance 46 50 Other 43 47 Total 215 247 Changes in asset retirement obligations are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Balance at beginning of year 36 37 47 Additions (1) 2 — 4 Accretion 1 1 1 Payments (10 ) (4 ) (8 ) Revisions to cash flow estimates (2) — 2 (7 ) Exchange rate changes — — — Balance at end of year 29 36 37 ______________________________ (1) Primarily relates to sites which management no longer considers to have an indeterminate life. (2) Primarily relates to revisions to the estimated cost and timing of future obligations. Included in the asset retirement obligations for the years ended December 31, 2016 and 2015 is $10 million and $10 million , respectively, related to indemnifications received for a business acquired in 2005. The corresponding $10 million receivable is included in noncurrent Other assets in the consolidated balance sheet as of December 31, 2016 .

Debt

Debt	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Debt	Debt As of December 31, 2016 2015 (In $ millions) Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates Current installments of long-term debt 27 56 Short-term borrowings, including amounts due to affiliates (1) 68 52 Short-term SOFTER bank loans ( Note 4 ) (2) 23 — Revolving credit facility (3) — 350 Accounts receivable securitization facility (4) — 55 Total 118 513 ______________________________ (1) The weighted average interest rate was 3.1% and 3.3% as of December 31, 2016 and 2015 , respectively. (2) The weighted average interest rate was 1.2% as of December 31, 2016 . (3) The weighted average interest rate was 1.8% as of December 31, 2015 . (4) The weighted average interest rate was 0.8% as of December 31, 2015 . As of December 31, 2016 2015 (In $ millions) Long-Term Debt Senior credit facilities - Term C-2 loan due 2016 (1) — 30 Senior credit facilities - Term C-3 loan due 2018 (2) — 878 Senior unsecured term loan due 2021 (3) 500 — Senior unsecured notes due 2019, interest rate of 3.250% 316 327 Senior unsecured notes due 2021, interest rate of 5.875% 400 400 Senior unsecured notes due 2022, interest rate of 4.625% 500 500 Senior unsecured notes due 2023, interest rate of 1.125% 788 — Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 5.70% to 6.70% — 169 Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 4.05% to 5.00% 170 — SOFTER bank loans due at various dates through 2021 ( Note 4 ) (4) 47 — Obligations under capital leases due at various dates through 2054 217 238 Subtotal 2,938 2,542 Unamortized debt issuance costs (5) (21 ) (18 ) Current installments of long-term debt (27 ) (56 ) Total 2,890 2,468 ______________________________ (1) The margin for borrowings under the Term C-2 loan facility was 2.0% above the Euro Interbank Offered Rate ("EURIBOR"). (2) The margin for borrowings under the Term C-3 loan facility was 2.25% above LIBOR (for US dollars) and 2.25% above EURIBOR (for Euros), as applicable. (3) The margin for borrowings under the senior unsecured term loan due 2021 was 1.5% above LIBOR at current Celanese credit ratings. (4) The weighted average interest rate was 1.6% as of December 31, 2016 . (5) Related to the Company's long-term debt, excluding obligations under capital leases. Senior Credit Facilities On July 15, 2016, Celanese, Celanese US and certain subsidiaries entered into a new senior credit agreement (the "New Credit Agreement") consisting of a $500 million senior unsecured term loan and a $1.0 billion senior unsecured revolving credit facility (with a letter of credit sublimit), each maturing in 2021. The proceeds from the new senior unsecured term loan and $409 million of borrowings under the new senior unsecured revolving credit facility were used to repay the Company's Term C-2 and C-3 loans under its previous senior secured credit facilities. The New Credit Agreement is guaranteed by Celanese, Celanese US and substantially all of its domestic subsidiaries ("the Subsidiary Guarantors"). The Company's debt balances and amounts available for borrowing under its senior unsecured revolving credit facility are as follows: As of December 31, 2016 (In $ millions) Revolving Credit Facility Borrowings outstanding (1) — Letters of credit issued — Available for borrowing (2) 1,000 ______________________________ (1) The Company borrowed $409 million and repaid $411 million under its new senior unsecured revolving credit facility during the year ended December 31, 2016 . The Company borrowed $245 million and repaid $595 million under its previous secured revolving credit facility during the year ended December 31, 2016 . (2) The margin for borrowings under the senior unsecured revolving credit facility was 1.5% above LIBOR at current Company credit ratings. Senior Notes The Company has outstanding senior unsecured notes, issued in public offerings registered under the Securities Act of 1933 ("Securities Act"), as amended (collectively, the "Senior Notes"). The Senior Notes were issued by Celanese US and are guaranteed on a senior unsecured basis by Celanese and the Subsidiary Guarantors. Celanese US may redeem some or all of each of the Senior Notes, prior to their respective maturity dates, at a redemption price of 100% of the principal amount, plus a "make-whole" premium as specified in the applicable indenture, plus accrued and unpaid interest, if any, to the redemption date. On September 26, 2016, Celanese US completed an offering of €750 million in principal amount of 1.125% senior unsecured notes due September 26, 2023 (the "1.125% Notes") in a public offering registered under the Securities Act. The 1.125% Notes were issued under a base indenture dated May 6, 2011. The 1.125% Notes were issued at a discount to par at a price of 99.713% , which is being amortized to Interest expense in the consolidated statements of operations over the term of the 1.125% Notes. Net proceeds from the sale of the 1.125% Notes were used to repay $411 million of outstanding borrowings under the new senior unsecured revolving credit facility and for general corporate purposes. Commencing June 26, 2023 through the redemption date, September 26, 2023, Celanese US may redeem some or all of the 1.125% Notes at any time and from time to time at a redemption price of 100% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date. In October 2014 , Celanese US redeemed its $600 million of principal amount of 6.625% unsecured senior notes due 2018 ("6.625% Notes") at a redemption price of 103.313% of the face amount for a total principal and premium payment of $620 million plus accrued interest of $20 million . Proceeds from the issuance of €300 million in principal amount of 3.250% senior unsecured notes due October 15, 2019 were used to partially fund the redemption of the 6.625% Notes, as well as cash on hand. The Company recognized a loss on the extinguishment of the 6.625% Notes comprised of the redemption premium of $20 million and accelerated amortization of deferred financing costs of $4 million , which were included in Refinancing expense in the consolidated statement of operations for the year ended December 31, 2014. SOFTER Bank Loans In January 2017, the Company repaid $69 million of the $70 million SOFTER bank loans outstanding at December 31, 2016 with cash on hand. Pollution Control and Industrial Revenue Bonds On March 3, 2016, the State of Wisconsin Public Finance Authority completed an offering of pollution control and industrial revenue bonds, the proceeds of which were loaned to Celanese US and used to repay the pollution control and industrial revenue bonds previously issued for the benefit of the Company. Accounts Receivables Securitization Facility The Company has a US accounts receivable securitization facility involving receivables of certain of its domestic subsidiaries of the Company transferred to a wholly-owned, "bankruptcy remote" special purpose subsidiary of the Company ("SPE"). The securitization facility, which permits cash borrowings and letters of credit, was scheduled to expire on August 28, 2016. On July 8, 2016, certain of the Company's subsidiaries entered into an amendment of the accounts receivable securitization facility, extending its maturity to July 2019 and decreasing the available amount to $120 million . All of the SPE's assets have been pledged to the administrative agent in support of the SPE's obligations under the facility. The Company's debt balances and amounts available for borrowing under its securitization facility are as follows: As of December 31, 2016 (In $ millions) Accounts Receivables Securitization Facility Borrowings outstanding (1) — Letters of credit issued 52 Available for borrowing 52 Total borrowing base 104 Maximum borrowing base (2) 120 ______________________________ (1) The Company repaid $55 million during the year ended December 31, 2016 . (2) Outstanding accounts receivable transferred to the SPE was $148 million . Principal payments scheduled to be made on the Company's debt, including short-term borrowings, are as follows: (In $ millions) 2017 118 2018 62 2019 407 2020 87 2021 804 Thereafter 1,551 Total 3,029 Net deferred financing costs are as follows: (In $ millions) As of December 31, 2013 27 Financing costs deferred (1) 10 Accelerated amortization due to refinancing activity (2) (5 ) Amortization (5 ) As of December 31, 2014 (3) 27 Financing costs deferred — Accelerated amortization due to refinancing activity — Amortization (5 ) As of December 31, 2015 (3) 22 Financing costs deferred (4) 13 Accelerated amortization due to refinancing activity (5) (3 ) Amortization (5 ) As of December 31, 2016 (3) 27 ____________________________ (1) Includes $6 million related to the issuance of the 3.250% Notes and $4 million related to the September 2014 amendment to the Celanese US existing senior secured credit facilities. (2) Includes $4 million related to the 6.625% Notes redemption and $1 million related to the Term C-2 loan facility conversion. (3) Includes $6 million , $4 million and $5 million as of December 31, 2016, 2015 and 2014, respectively, related to the Company's revolving credit facility and accounts receivables securitization facility, which are included in noncurrent Other assets in the consolidated balance sheets. (4) Includes $5 million , $6 million and $2 million related to the New Credit Agreement, the 1.125% Notes and the pollution control and industrial revenue bonds, respectively, all of which are being amortized through the term of the respective financing arrangement. (5) Includes $2 million and $1 million related to the senior secured credit facilities and the pollution control and industrial revenue bonds, respectively, which are included in Refinancing expense in the consolidated statement of operations during the year ended December 31, 2016 . Covenants The Company's material financing arrangements contain customary covenants, including the maintenance of certain financial ratios, events of default and change of control provisions. 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. The Company is in compliance with all of the covenants related to its debt agreements as of December 31, 2016 .

Benefit Obligations

Benefit Obligations	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Benefit Obligations	Benefit Obligations Pension Obligations The Company sponsors defined benefit pension plans in North America, Europe and Asia. Independent trusts or insurance companies administer the majority of these plans. Pension obligations are established for benefits payable in the form of retirement, disability and surviving dependent pensions. The commitments result from participation in defined contribution and defined benefit plans, primarily in the US. Benefits are dependent on years of service and the employee's compensation. Supplemental retirement benefits provided to certain employees are nonqualified for US tax purposes. Separate nonqualified trusts have been established for certain US nonqualified plan obligations. Pension costs under the Company's retirement plans are actuarially determined. In October 2014, the Company offered a limited-time, voluntary program to certain participants of the Company's US qualified defined benefit pension plan with a vested benefit who terminated from the Company on or before May 31, 2014. The limited-time opportunity ended in November 2014 and included an offer of a single lump sum payment in December 2014 or to begin monthly annuity payments, regardless of age, or to continue to defer benefits until retirement age. If an election was not made by the eligible participant, the participant will begin receiving payments when otherwise eligible under the terms of the US qualified defined benefit pension plan. The Company made lump sum payments under this program of $143 million in December 2014 using trust assets of the US qualified defined benefit pension plan. These actions resulted in the recognition of a settlement gain of $78 million in the consolidated statements of operations for the year ended December 31, 2014. Effective June 2014, the Company's US qualified defined benefit plan was amended and benefits offered to all current union participants of the Cash Balance Plan (hired on or after January 1, 2001) at the Company's Narrows, Virginia facility have been frozen and the US qualified defined benefit plan was closed to future union participants at the facility. Accumulated benefits earned and service rendered through May 2014 under the Plan provisions for the Cash Balance Plan Participants will continue to be considered for purposes of determining retirement benefits. Effective May 2014, the Company's US qualified defined benefit plan was amended and benefits offered to all current union participants of the Flat Rate Plan at the Company's Narrows, Virginia facility have been frozen and the US qualified defined benefit plan was closed to future union participants at the facility. Accumulated benefits earned and service rendered through December 2014 under the Plan provisions for the Flat Rate Plan Participants will continue to be considered for purposes of determining retirement benefits and eligibility for early retirement. These actions did not result in a curtailment gain or loss as the projected benefit obligation does not rely on salary assumptions. Effective December 2013, benefits offered to all US non-union eligible employees in the Company's US qualified defined benefit pension plan have been frozen and the US qualified defined benefit pension plan was closed to new participants. Accumulated benefits earned and service rendered through December 31, 2013 under the US qualified defined benefit pension plan provisions will continue to be considered for purposes of determining retirement benefits and eligibility for early retirement. The Company participates in a multiemployer defined benefit plan and a multiemployer defined contribution plan in Germany covering certain employees. The Company's contributions to the multiemployer defined benefit plan are based on specified percentages of employee contributions as outlined in a works council agreement, covering all German entity employees hired prior to January 1, 2012. As of January 1, 2012, the multiemployer defined benefit pension plan described above was closed to new employees. Qualifying employees hired in Germany after December 31, 2011 are covered by a multiemployer defined contribution plan. The Company's contributions to the multiemployer defined contribution plan are based on specified percentages of employee contributions, similar to the multiemployer defined benefit plan, but at a lower rate. Statutory regulations and the works council agreement require the contributions to fully fund the multiemployer plans. The risks of participating in the multiemployer plans are different from single-employer plans in the following aspects: • Assets contributed to the multiemployer plan by one employer may be used to provide benefits to employees of other participating employers. • If a participating employer stops contributing to the plan, any underfunding may be borne by the remaining participants, especially since regulations strictly enforce funding requirements. • If the Company chooses to stop participating in the multiemployer plan, the Company may be required to pay the plan an amount based on the underfunded status of the plan, referred to as the withdrawal liability. Based on the 2016 unaudited and 2015 audited multiemployer defined benefit plan's financial statements, the plan is 100% funded in 2016 , 2015 and 2014 . The number of employees covered by the Company's multiemployer defined benefit plan remained relatively stable year over year from 2014 to 2016 , resulting in minimal changes to employer contributions. Participation in the German multiemployer defined benefit plan is not considered individually significant to the Company. Contributions made by the Company to the German multiemployer plan are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Multiemployer defined benefit plan 7 6 8 Other Postretirement Obligations Certain retired employees receive postretirement health care and life insurance benefits under plans sponsored by the Company, which has the right to modify or terminate these plans at any time. The cost for coverage is shared between the Company and the retiree. The cost of providing retiree health care and life insurance benefits is actuarially determined and accrued over the service period of the active employee group. The Company's policy is to fund benefits as claims and premiums are paid. The US postretirement health care plan was closed to new participants effective January 1, 2006. In November 2013, the Company announced it would amend its primary US postretirement health care plan to (a) eliminate eligibility for all current and future US non-union employees; (b) terminate its US postretirement health care plan on December 31, 2014 for all US participants; and (c) offer certain eligible US participants a lump-sum buyout payment if they irrevocably waive all future benefits under the US postretirement health care plan and end their participation before December 31, 2014. These actions generated a prior service credit of $92 million , which was amortized ratably into the consolidated statements of operations from November 1, 2013 through December 31, 2014. Effective March 2014, the Company eliminated eligibility in its US postretirement health care plan for all current and future employees represented by the bargaining unit at the Company's Narrows, Virginia facility. These actions generated a prior service credit of $5 million , which was amortized ratably into the consolidated statements of operations from April 1, 2014 through December 31, 2014. The Company recognized $84 million of prior service credit amortization and made $40 million in lump-sum buyout payments as of December 31, 2014. Postemployment Obligations The Company provides benefits to certain employees after employment but prior to retirement, including severance and disability-related benefits offered pursuant to ongoing benefit arrangements. The cost of providing postemployment benefits is actuarially determined and recorded when the obligation is probable of occurring and can be reasonably estimated. Postemployment obligations are as follows: As of December 31, 2016 2015 (In $ millions) Postemployment benefits 9 11 Defined Contribution Plans The Company sponsors various defined contribution plans in North America, Europe and Asia covering certain employees. Employees may contribute to these plans and the Company will match these contributions in varying amounts. The Company's matching contribution to the defined contribution plans are based on specified percentages of employee contributions. Beginning in 2014, the Company took the following actions as it relates to the US defined contribution plan: • Increased its employer match for those employees participating in the US defined contribution plan; • Added an annual retirement contribution for US employees who are employed as of December 31st each year (or have died during that year), regardless of whether the employee contributes to the US defined contribution plan; and • For certain eligible US employees, provides an incremental retirement contribution through 2017, based on years of service and specified percentages of eligible compensation. The amount of costs recognized for the Company's defined contribution plans are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Defined contribution plans 43 44 40 Summarized information on the Company's pension and postretirement benefit plans is as follows: Pension Benefits Postretirement Benefits 2016 2015 2016 2015 (In $ millions) Change in Projected Benefit Obligation Projected benefit obligation as of beginning of period 3,635 3,915 66 85 Service cost 8 12 — 1 Interest cost 113 139 2 3 Participant contributions — — — 1 Plan amendments — — — (6 ) Net actuarial (gain) loss (1) 102 (141 ) 3 (8 ) Settlements (1 ) — — — Benefits paid (232 ) (234 ) (4 ) (5 ) Federal subsidy on Medicare Part D — — — — Curtailments — (1 ) — — Special termination benefits 3 2 — — Exchange rate changes (18 ) (65 ) — (5 ) Other — 8 — — Projected benefit obligation as of end of period 3,610 3,635 67 66 Change in Plan Assets Fair value of plan assets as of beginning of period 2,508 2,789 — — Actual return on plan assets 177 (67 ) — — Employer contributions 346 59 4 4 Participant contributions — — — 1 Settlements (1 ) — — — Benefits paid (2) (232 ) (234 ) (4 ) (5 ) Exchange rate changes (14 ) (39 ) — — Fair value of plan assets as of end of period 2,784 2,508 — — Funded status as of end of period (826 ) (1,127 ) (67 ) (66 ) Amounts Recognized in the Consolidated Balance Sheets Consist of: Noncurrent Other assets 22 16 — — Current Other liabilities (25 ) (25 ) (5 ) (4 ) Benefit obligations (823 ) (1,118 ) (62 ) (62 ) Net amount recognized (826 ) (1,127 ) (67 ) (66 ) Amounts Recognized in Accumulated Other Comprehensive Income Consist of: Net actuarial (gain) loss (3) 18 16 — — Prior service (benefit) cost (1 ) (1 ) (1 ) (4 ) Net amount recognized (4) 17 15 (1 ) (4 ) ______________________________ (1) Primarily relates to change in discount rates. (2) Includes benefit payments to nonqualified pension plans of $22 million and $22 million as of December 31, 2016 and 2015 , respectively. (3) Relates to the pension plans of the Company's equity method investments. (4) Amount shown net of an income tax benefit of $4 million and $3 million as of December 31, 2016 and 2015 , respectively, in the consolidated statements of equity ( Note 17 ). The percentage of US and international projected benefit obligation at the end of the period is as follows: Pension Benefits Postretirement Benefits 2016 2015 2016 2015 (In percentages) US plans 85 86 57 61 International plans 15 14 43 39 Total 100 100 100 100 The percentage of US and international fair value of plan assets at the end of the period is as follows: Pension Benefits 2016 2015 (In percentages) US plans 88 87 International plans 12 13 Total 100 100 Pension plans with projected benefit obligations in excess of plan assets are as follows: As of December 31, 2016 2015 (In $ millions) Projected benefit obligation 3,559 3,588 Fair value of plan assets 2,711 2,445 Included in the above table are pension plans with accumulated benefit obligations in excess of plan assets as follows: As of December 31, 2016 2015 (In $ millions) Accumulated benefit obligation 3,538 3,570 Fair value of plan assets 2,708 2,442 The accumulated benefit obligation for all defined benefit pension plans is as follows: As of December 31, 2016 2015 (In $ millions) Accumulated benefit obligation 3,591 3,619 Beginning in 2016, the Company adopted a full yield curve approach to estimate the service and interest cost components of net periodic benefit cost ( Note 2 ). The Company's adoption of the full yield curve approach reduced 2016 service and interest cost by $29 million as compared to the previous single weighted average discount rate method. The components of net periodic benefit cost are as follows: Pension Benefits Postretirement Benefits 2016 2015 2014 2016 2015 2014 (In $ millions) Service cost 8 12 11 — 1 1 Interest cost 113 139 168 2 3 4 Expected return on plan assets (177 ) (209 ) (214 ) — — — Amortization of prior service cost / (credit) — — — (3 ) — (83 ) Recognized actuarial (gain) loss 101 (1) 134 (2) 339 (3) 2 (7 ) 11 Curtailment (gain) loss — (3 ) — — — — Settlement (gain) loss — — (78 ) — — — Special termination benefit 3 2 — — — — Total 48 75 226 1 (3 ) (67 ) ______________________________ (1) Includes a gain of $48 million reflecting the incorporation of the RP-2016 mortality tables into the actuarial assumptions for the US pension plans. (2) Includes a gain of $62 million reflecting the incorporation of the RP-2015 mortality tables into the actuarial assumptions for the US pension plans. (3) Includes a loss of $53 million reflecting the incorporation of the RP-2014 mortality tables into the actuarial assumptions for the US pension plans. Amortization of Accumulated other comprehensive income (loss), net into net periodic benefit cost in 2017 is expected to be as follows: Pension Benefits Postretirement Benefits (In $ millions) Prior service cost — (2 ) The Company maintains nonqualified pension plans funded with nonqualified trusts for certain US employees as follows: As of December 31, 2016 2015 (In $ millions) Nonqualified Trust Assets Marketable securities, at fair value 30 30 Noncurrent Other assets, consisting of insurance contracts 49 55 Nonqualified Pension Obligations Current Other liabilities 22 22 Benefit obligations 241 246 Expense relating to the nonqualified pension plans included in net periodic benefit cost, excluding returns on the assets held by the nonqualified trusts, is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 18 — (1) 43 ______________________________ (1) Actuarial gain offset interest cost. Valuation The principal weighted average assumptions used to determine benefit obligation are as follows: Pension Benefits Postretirement Benefits 2016 2015 2016 2015 (In percentages) Discount Rate Obligations US plans 3.9 4.2 3.8 4.0 International plans 2.1 2.6 3.3 3.6 Combined 3.7 4.0 3.4 3.7 Rate of Compensation Increase US plans N/A N/A International plans 2.8 2.7 Combined 2.8 2.7 The principal weighted average assumptions used to determine net periodic benefit cost are as follows: Pension Benefits Postretirement Benefits 2016 2015 2014 2016 2015 2014 (In percentages) Discount Rate Obligations US plans 4.2 3.9 4.7 4.0 3.7 4.3 International plans 2.6 2.4 3.7 3.6 3.5 4.5 Combined 4.0 3.7 4.6 3.9 3.6 4.4 Discount Rate Service Cost (1) US plans 4.5 3.9 4.7 4.2 3.7 4.3 International plans 3.1 2.4 3.7 3.8 3.5 4.5 Combined 3.1 3.7 4.6 3.8 3.6 4.4 Discount Rate Interest Cost (1) US plans 3.4 3.9 4.7 3.1 3.7 4.3 International plans 2.2 2.4 3.7 3.1 3.5 4.5 Combined 3.2 3.7 4.6 3.1 3.6 4.4 Expected Return on Plan Assets US plans 7.5 8.0 8.5 International plans 6.1 6.0 6.2 Combined 7.3 7.8 8.2 Rate of Compensation Increase US plans N/A N/A 3.0 International plans 2.7 2.8 2.8 Combined 2.7 2.8 3.0 ______________________________ (1) Weighted-average discount rates in 2016 reflect the adoption of the full yield curve approach. The Company's health care cost trend assumptions for US postretirement medical plan's net periodic benefit cost are as follows: As of December 31, 2016 2015 2014 (In percentages, except year) Health care cost trend rate assumed for next year 9.5 10.0 7.0 Health care cost trend ultimate rate 5.0 5.0 5.0 Health care cost trend ultimate rate year 2026 2026 2020 Assumed health care cost trend rates for US postretirement medical plans have a significant effect on the amounts reported for the health care plans. The impact of a one percentage point change in the assumed health care cost trend is as follows: Trend Rate Change Decreases 1% Increases 1% (In $ millions) Postretirement obligations 2 2 Service and interest cost — — Plan Assets The weighted average target asset allocations for the Company's pension plans in 2016 are as follows: US Plans International Plans (In percentages) Bonds - domestic to plans 54 58 Equities - domestic to plans 26 16 Equities - international to plans 20 — Other — 26 Total 100 100 On average, the actual return on the US qualified defined pension plans' assets over the long-term (20 years) has exceeded the expected long-term rate of asset return assumption. The US qualified defined benefit plans' actual return on assets for the year ended December 31, 2016 was 6.9% versus an expected long-term rate of asset return assumption of 7.5% . The expected long-term rate of asset return assumption used to determine 2017 net periodic benefit cost is 7.5% for the US qualified defined benefit plans. The Company's defined benefit plan assets are measured at fair value on a recurring basis ( Note 2 ) as follows: Cash and Cash Equivalents: Foreign and domestic currencies as well as short term securities are valued at cost plus accrued interest, which approximates fair value. Equity securities, treasuries and corporate debt: Valued at the closing price reported on the active market in which the individual securities are traded. Automated quotes are provided by multiple pricing services and validated by the plan custodian. These securities are traded on exchanges as well as in the over the counter market. Registered Investment Companies: Composed of various mutual funds and other investment companies whose diversified portfolio is comprised of foreign and domestic equities, fixed income securities, and short term investments. Investments are valued at the net asset value of units held by the plan at year-end. Common/Collective Trusts: Composed of various funds whose diversified portfolio is comprised of foreign and domestic equities, fixed income securities, and short term investments. Investments are valued at the net asset value of units held by the plan at year-end. Derivatives: Derivative financial instruments are valued in the market using discounted cash flow techniques. These techniques incorporate Level 1 and Level 2 fair value measurement 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, foreign currency forwards and swaps, and options are observable in the active markets and are classified as Level 2 in the fair value measurement hierarchy. Mortgage backed securities: Fair value is estimated based on valuations obtained from third-party pricing services for identical or comparable assets. Mortgage Backed Securities are traded in the over the counter broker/dealer market. Insurance contracts: Valued at contributions made, plus earnings, less participant withdrawals and administrative expenses, which approximates fair value. Short-term investment funds: Composed of various funds whose portfolio is comprised of foreign and domestic currencies as well as short-term securities. Investments are valued at the net asset value of units held by the plan at year-end. Other: Composed of real estate investment trust common stock valued at closing price as reported on the active market in which the individual securities are traded. Fair Value Measurement Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Total As of December 31, 2016 2015 2016 2015 2016 2015 (In $ millions) Assets Cash and cash equivalents 2 4 — — 2 4 Derivatives Swaps — — 2 25 2 25 Other — — — — — — Equity securities US companies 260 241 — — 260 241 International companies 345 327 — — 345 327 Fixed income Corporate debt — — 798 692 798 692 Treasuries, other debt 37 25 793 742 830 767 Mortgage backed securities — — 7 5 7 5 Insurance contracts — — 31 32 31 32 Other 24 18 — — 24 18 Total investments, at fair value (1) 668 615 1,631 1,496 2,299 2,111 Liabilities Derivatives Swaps — — 2 25 2 25 Other — — 1 — 1 — Total liabilities — — 3 25 3 25 Total net assets (2) 668 615 1,628 1,471 2,296 2,086 ______________________________ (1) In accordance with ASU 2015-07 ( Note 2 ), certain investments that are measured at fair value using the NAV per share practical expedient have not been classified in the fair value hierarchy. Total investments, at fair value, for the year ended December 31, 2016 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $195 million , $134 million and $149 million , respectively. Total investments, at fair value, for the year ended December 31, 2015 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $251 million , $117 million and $43 million , respectively. (2) Total net assets excludes non-financial plan receivables and payables of $20 million and $10 million , respectively, as of December 31, 2016 and $25 million and $14 million , respectively, as of December 31, 2015 . Non-financial items include due to/from broker, interest receivables and accrued expenses. Benefit obligation funding is as follows: Total Expected 2017 (In $ millions) Cash contributions to defined benefit pension plans 20 Benefit payments to nonqualified pension plans 22 Benefit payments to other postretirement benefit plans 4 The Company's estimates of its US defined benefit pension plan contributions reflect the provisions of the Pension Protection Act of 2006. Pension and postretirement benefits expected to be paid are as follows: Pension Benefit Payments (1) Company Portion of Postretirement Benefit Cost (2) (In $ millions) 2017 233 5 2018 231 5 2019 229 4 2020 228 4 2021 225 4 2022-2026 1,093 19 ______________________________ (1) Payments are expected to be made primarily from plan assets. (2) Payments are expected to be made primarily from Company assets.

Environmental

Environmental	12 Months Ended
	Dec. 31, 2016
Environmental Remediation Obligations [Abstract]
Environmental	Environmental The Company is subject to environmental laws and regulations worldwide that impose limitations on the discharge of pollutants into the air and water, establish standards for the treatment, storage and disposal of solid and hazardous wastes, and impose record keeping and notification requirements. Failure to timely comply with these laws and regulations may expose the Company to penalties. The Company believes that it is in substantial compliance with all applicable environmental laws and regulations and engages in an on going process of updating its controls to mitigate compliance risks. 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 December 31, 2016 2015 (In $ millions) Demerger obligations ( Note 24 ) 18 22 Divestiture obligations ( Note 24 ) 16 17 Active sites 16 18 US Superfund sites 11 13 Other environmental remediation reserves 3 2 Total 64 72 Remediation Due to its industrial history and through retained contractual and legal obligations, the Company has the obligation to remediate specific areas on its own sites as well as on divested, demerger, orphan or US Superfund sites (as defined below). In addition, as part of the demerger agreement between the Company and Hoechst AG ("Hoechst"), a specified portion of the responsibility for environmental liabilities from a number of Hoechst divestitures was transferred to the Company ( Note 24 ). 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. The Company did not record any insurance recoveries during 2016 or have any receivables for insurance recoveries related to these matters as of December 31, 2016 . As of December 31, 2016 and 2015 , there were receivables of $2 million and $4 million , respectively, from the former owner of the Company's Spondon, Derby, United Kingdom acetate flake, tow and film business, which was acquired in 2007. German InfraServ Entities The Company's InfraServ Entities ( Note 9 ) are liable for any residual contamination and other pollution because they own the real estate on which the individual facilities operate. In addition, Hoechst, and its legal successors, as the responsible party under German public law, is liable to third parties for all environmental damage that occurred while it was still the owner of the plants and real estate ( Note 24 ). The contribution agreements entered into in 1997 between Hoechst and the respective operating companies, as part of the divestiture of these companies, provide that the operating companies will indemnify Hoechst, and its legal successors, against environmental liabilities resulting from the transferred businesses. Additionally, the InfraServ Entities have agreed to indemnify Hoechst, and its legal successors, against any environmental liability arising out of or in connection with environmental pollution of any site. The InfraServ partnership agreements provide that, as between the partners, each partner is responsible for any contamination caused predominantly by such partner. Any liability, which cannot be attributed to an InfraServ partner and for which no third party is responsible, is required to be borne by the InfraServ partnership. Also, under lease agreements entered into by an InfraServ partner as landlord, the tenants agreed to pay certain remediation costs on a pro rata basis. If an InfraServ partner defaults on its respective indemnification obligations to eliminate residual contamination, the owners of the remaining participation in the InfraServ companies have agreed to fund such liabilities, subject to a number of limitations. To the extent that any liabilities are not satisfied by either the InfraServ Entities or their owners, these liabilities are to be borne by the Company in accordance with the demerger agreement. However, Hoechst, and its legal successors, will reimburse the Company for two-thirds of any such costs. Likewise, in certain circumstances the Company could be responsible for the elimination of residual contamination on several sites that were not transferred to InfraServ companies, in which case Hoechst, and its legal successors, must also reimburse the Company for two-thirds of any costs so incurred. The Company's ownership interest and environmental liability participation percentages for such liabilities, which cannot be attributed to an InfraServ partner are as follows: As of December 31, 2016 Ownership Liability Reserves (1) (In percentages) (In $ millions) InfraServ GmbH & Co. Gendorf KG 39 10 10 InfraServ GmbH & Co. Hoechst KG 32 40 62 InfraServ GmbH & Co. Knapsack KG 27 22 1 ______________________________ (1) Gross reserves maintained by the respective InfraServ entity. US Superfund Sites In the US, the Company may be subject to substantial claims brought by US federal or state regulatory agencies or private individuals pursuant to statutory authority or common law. In particular, the Company has a potential liability under the US Federal Comprehensive Environmental Response, Compensation and Liability Act of 1980, as amended, and related state laws (collectively referred to as "Superfund") for investigation and cleanup costs at certain sites. At most of these sites, numerous companies, including the Company, or one of its predecessor companies, have been notified that the US Environmental Protection Agency ("EPA"), state governing bodies or private individuals consider such companies to be potentially responsible parties ("PRP") under Superfund or related laws. The proceedings relating to these sites are in various stages. The cleanup process has not been completed at most sites, and the status of the insurance coverage for some of these proceedings is uncertain. Consequently, the Company cannot accurately determine its ultimate liability for investigation or cleanup costs at these sites. As events progress at each site for which it has been named a PRP, the Company accrues, as appropriate, a liability for site cleanup. Such liabilities include all costs that are probable and can be reasonably estimated. In establishing these liabilities, the Company considers its shipment of waste to a site, its percentage of total waste shipped to the site, the types of wastes involved, the conclusions of any studies, the magnitude of any remedial actions that may be necessary and the number and viability of other PRPs. Often the Company joins with other PRPs to sign joint defense agreements that settle, among PRPs, each party's percentage allocation of costs at the site. Although the ultimate liability may differ from the estimate, the Company routinely reviews the liabilities and revises the estimate, as appropriate, based on the most current information available. One such site is the Diamond Alkali Superfund Site, which is comprised of a number of sub-sites, including the Lower Passaic River Study Area, which is the lower 17-mile stretch of the Passaic River ("Lower Passaic River Site"), and the Newark Bay Area. The Company and 70 other companies are parties to a May 2007 Administrative Order on Consent with the EPA to perform a Remedial Investigation/Feasibility Study ("RI/FS") at the Lower Passaic River Site in order to identify the levels of contaminants and potential cleanup actions, including the potential migration of contaminants between the Lower Passaic River Site and the Newark Bay Area. Work on the RI/FS is ongoing, with a goal to complete it in 2018. On March 3, 2016, the EPA issued its final Record of Decision concerning the remediation of the lower 8.3 miles of the Lower Passaic River Site ("Lower 8.3 Miles"). The Company owned and/or operated facilities in the vicinity of the Lower 8.3 Miles, but has found no evidence that it contributed any of the primary contaminants of concern to the Passaic River. Pursuant to the EPA's Record of Decision, the Lower 8.3 Miles must be dredged bank to bank and an engineered cap must be installed at an EPA estimated cost of approximately $1.4 billion . The Company is vigorously defending this matter and currently believes that its ultimate allocable share of the cleanup costs with respect to the Lower Passaic River Site, estimated at less than 1% , will not be material.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2016
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 Common Stock, unless the Company's Board of Directors, in its sole discretion, determines otherwise. The Company's Board of Directors approved increases in the Company's Common Stock cash dividend rates as follows: Increase Quarterly Common Stock Cash Dividend Annual Common Stock Cash Dividend Effective Date (In percentages) (In $ per share) April 2014 39 0.25 1.00 May 2014 April 2015 20 0.30 1.20 May 2015 April 2016 20 0.36 1.44 May 2016 On February 9, 2017 , the Company declared a quarterly cash dividend of $0.36 per share on its Common Stock amounting to $51 million . The cash dividend is for the period from November 1, 2016 to January 31, 2017 and will be paid on March 3, 2017 to holders of record as of February 21, 2017 . Treasury Stock The Company's Board of Directors authorizes repurchases of Common Stock from time to time. These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. This repurchase program does not have an expiration date. The share repurchase activity pursuant to this authorization is as follows: Year Ended December 31, Total From 2016 2015 2014 Shares repurchased 7,034,420 6,640,601 (1) 4,338,488 34,342,216 Average purchase price per share $ 71.08 $ 63.31 $ 57.61 $ 53.44 Amount spent on repurchased shares (in millions) $ 500 $ 420 $ 250 $ 1,835 Aggregate Board of Directors repurchase authorizations during the period (in millions) (2) $ — $ 1,000 $ 473 $ 2,366 ______________________________ (1) The year ended December 31, 2015 excludes 9,264 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares. (2) These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. This repurchase program began in February 2008 and does not have an expiration date. The purchase of treasury stock reduces the number of shares outstanding. 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 Year Ended December 31, 2016 2015 2014 Gross Amount Income Tax (Provision) Benefit Net Amount Gross Amount Income Tax (Provision) Benefit Net Amount Gross Amount Income Tax (Provision) Benefit Net Amount (In $ millions) Unrealized gain (loss) on marketable securities — — — — — — — 1 1 Foreign currency translation (22 ) 11 (11 ) (193 ) 5 (188 ) (188 ) 40 (148 ) Gain (loss) on cash flow hedges 5 — 5 3 (1 ) 2 — 40 40 Pension and postretirement benefits (5 ) 1 (4 ) 4 (1 ) 3 (84 ) 30 (54 ) Total (22 ) 12 (10 ) (186 ) 3 (183 ) (272 ) 111 (161 ) Adjustments to Accumulated other comprehensive income (loss), net, are as follows: Unrealized Gain (Loss) on Marketable Securities ( Note 6 ) Foreign Currency Translation Gain (Loss) from Cash Flow Hedges ( Note 22 ) Pension and Postretirement Benefits ( Note 15 ) Accumulated Other Comprehensive Income (Loss), Net (In $ millions) As of December 31, 2013 — (3 ) (44 ) 43 (4 ) Other comprehensive income (loss) before reclassifications — (188 ) (9 ) (1 ) (198 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 9 (83 ) (74 ) Income tax (provision) benefit 1 40 40 30 111 As of December 31, 2014 1 (151 ) (4 ) (11 ) (165 ) Other comprehensive income (loss) before reclassifications — (193 ) (2 ) 6 (189 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 5 (2 ) 3 Income tax (provision) benefit — 5 (1 ) (1 ) 3 As of December 31, 2015 1 (339 ) (2 ) (8 ) (348 ) Other comprehensive income (loss) before reclassifications — (22 ) 7 (3 ) (18 ) Amounts reclassified from accumulated other comprehensive income (loss) — — (2 ) (2 ) (4 ) Income tax (provision) benefit — 11 — 1 12 As of December 31, 2016 1 (350 ) 3 (12 ) (358 )

Other (Charges) Gains, Net

Other (Charges) Gains, Net	12 Months Ended
	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Other (Charges) Gains, Net	Other (Charges) Gains, Net Year Ended December 31, 2016 2015 2014 (In $ millions) Employee termination benefits ( Note 4 ) (1) (11 ) (53 ) (7 ) Asset impairments (2 ) (126 ) — Other plant/office closures — — 2 Singapore contract termination — (174 ) — Commercial disputes 2 2 11 Other — — 9 Total (11 ) (351 ) 15 ______________________________ (1) Includes $3 million and $1 million of special termination benefits included in Benefit obligations in the consolidated balance sheet as of December 31, 2016 and 2015 , respectively. 2016 During the year ended December 31, 2016, the Company recorded $11 million of employee termination benefits primarily related to the Company's ongoing efforts to align its businesses around its core value drivers. 2015 During the year ended December 31, 2015, the Company recorded $21 million of employee termination benefits related to the Company's ongoing efforts to align its businesses around its core value drivers. In addition, the Company recorded $24 million of employee termination benefits related to a 50% capacity reduction at its Lanaken, Belgium acetate tow facility ( Note 4 ). In addition, during the year ended December 31, 2015, the Company recorded $6 million of employee termination benefits and $1 million of long-lived asset impairment losses related to the closure of its VAE emulsions facility in Tarragona, Spain ( Note 4 ). In addition, the Company recorded $1 million of employee termination benefits and $1 million of long-lived asset impairment losses related to the closure of its VAE emulsions facility in Meredosia, Illinois ( Note 4 ). The long-lived asset impairment losses related to both VAE facilities were measured at the dates of impairment to write-off the related property, plant and equipment at each facility ( Note 2 and Note 4 ). During the three months ended December 31, 2015, the Company determined its ethanol production unit at its acetyl facility in Nanjing, China should be assessed for impairment based on market conditions affecting demand for ethanol and downstream products, the cost to operate the unit and contractual obligations. As a result, the Company concluded that certain long-lived ethanol related assets were fully impaired. Accordingly, the Company recorded long-lived asset impairment losses, measured at the date of impairment ( Note 2 ), of $123 million to fully write-off certain ethanol related assets. The Nanjing, China asset impairment is included in the Company's Acetyl Intermediates segment. In December 2015, the Company made a payment terminating an existing agreement with a raw materials supplier in Singapore and recognized a $174 million charge, which reflects a discounted amount previously owed under that contract. This termination payment was determined not to have future economic benefit, and the contract's original terms substantially contributed to cumulative losses which resulted in a full impairment of the production assets in 2013. This charge is recorded in Other (charges) gains net, which is included in the Company's Acetyl Intermediates segment. 2014 During the year ended December 31, 2014, the Company received consideration of $8 million in connection with the settlement of a claim against a bankrupt supplier. The Company also recorded $12 million of damages in connection with the settlement of a claim by a raw materials supplier. These commercial dispute resolutions are included in the Acetyl Intermediates segment. In addition, the Company recovered $15 million from an arbitration award against a former utility operator at its cellulose derivatives manufacturing facility in Narrows, Virginia, which is included in the Consumer Specialties segment. During the year ended December 31, 2014 the Company recorded $4 million of employee termination benefits related to the closure of its acetic anhydride facility in Roussillon, France and its vinyl acetate monomer ("VAM") facility in Tarragona, Spain. In addition, the Company recorded $2 million of contract termination adjustments related to the closure of its VAM facility in Tarragona, Spain. 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, 2014 4 1 1 5 3 14 Additions 7 25 9 2 9 52 Cash payments (4 ) (12 ) (4 ) (5 ) (3 ) (28 ) Other changes (3 ) — — — (3 ) (6 ) Exchange rate changes (1 ) — — (1 ) — (2 ) As of December 31, 2015 3 14 6 1 6 30 Additions 2 2 2 1 3 10 Cash payments (3 ) (6 ) (6 ) (1 ) (5 ) (21 ) Other changes (1 ) — — — (1 ) (2 ) Exchange rate changes — (1 ) — — — (1 ) As of December 31, 2016 1 9 2 1 3 16 Other Plant/Office Closures As of December 31, 2014 — — — 7 — 7 Additions — — — — — — Cash payments — — — (6 ) — (6 ) Other changes — — — — — — Exchange rate changes — — — (1 ) — (1 ) As of December 31, 2015 — — — — — — Additions — — — — — — Cash payments — — — — — — Other changes — — — — — — Exchange rate changes — — — — — — As of December 31, 2016 — — — — — — Total 1 9 2 1 3 16

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income Tax Provision Earnings (loss) from continuing operations before tax by jurisdiction are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) US 326 231 534 International (1) 704 257 407 Total 1,030 488 941 ______________________________ (1) Includes aggregate earnings generated by operations in Bermuda, Luxembourg, the Netherlands and Hong Kong of $621 million , $330 million and $308 million for the years ended December 31, 2016 , 2015 and 2014 , respectively, which have an aggregate effective income tax rate of 1.9% , 6.1% and 4.8% for each year, respectively. The income tax provision (benefit) consists of the following: Year Ended December 31, 2016 2015 2014 (In $ millions) Current US (22 ) 28 108 International 60 152 56 Total 38 180 164 Deferred US 108 54 156 International (24 ) (33 ) (6 ) Total 84 21 150 Total 122 201 314 A reconciliation of the significant differences between the US federal statutory tax rate of 35% and the effective income tax rate on income from continuing operations is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions, except percentages) Income tax provision computed at US federal statutory tax rate 361 171 329 Change in valuation allowance (18 ) 124 49 Equity income and dividends (60 ) (33 ) (50 ) (Income) expense not resulting in tax impact, net (152 ) (32 ) (34 ) US tax effect of foreign earnings and dividends 302 15 49 Foreign tax credits (293 ) (4 ) (34 ) Other foreign tax rate differentials (44 ) (41 ) (33 ) Tax-deductible interest on foreign equity investments and other related items — — 12 State income taxes, net of federal benefit 8 6 9 Other, net 18 (5 ) 17 Income tax provision (benefit) 122 201 314 Effective income tax rate 12 % 41 % 33 % Federal and state income taxes have not been provided on accumulated but undistributed earnings of $4.3 billion as of December 31, 2016 as such earnings have been permanently reinvested in the business or may be remitted substantially free of incremental US federal tax liability. The determination of the amount of the unrecognized deferred tax liability related to the undistributed earnings is not practicable. The lower effective tax rate for the year ended December 31, 2016 is primarily attributable to the release of valuation allowances in foreign jurisdictions due to internal restructuring in Canada, improved operating results in China and settlement of uncertain tax positions and technical clarifications in Germany and the US. The higher effective rate for the year ended December 31, 2015 was due to increased losses in jurisdictions with no tax benefit. The increased losses primarily related to a $123 million long-lived asset impairment recorded to fully write-off certain ethanol related assets at the Company's acetyl facility in Nanjing, China and a $174 million charge related to the termination of a raw materials contract with a supplier in Singapore ( Note 18 ). These losses without tax benefit impacted 2015, but did not recur in 2016. The tax impact of these events was partially offset by decreases in uncertain tax positions of $29 million due to audit closures and technical jurisdictional clarifications. In February 2015, the Company established a centralized European headquarters for the purpose of improving the operational efficiencies and profitability of its European operations and certain global product lines. These activities directly impacted the Company's mix of earnings and product flows and resulted in net favorable tax rate impacts in the jurisdictions in which the Company operates. These impacts have been reflected in (Income) expense not resulting in tax impact, net and Other foreign tax rate differentials included in the reconciliation of the significant differences between the US federal statutory tax rate and the effective income tax rate. Deferred Income Taxes Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the consolidated deferred tax assets and liabilities are as follows: As of December 31, 2016 2015 (In $ millions) Deferred Tax Assets Pension and postretirement obligations 313 434 Accrued expenses 61 40 Inventory 11 14 Net operating loss 661 683 Tax credit carryforwards 136 88 Other 161 202 Subtotal 1,343 1,461 Valuation allowance (1) (386 ) (448 ) Total 957 1,013 Deferred Tax Liabilities (2) Depreciation and amortization 366 380 Investments in affiliates 475 395 Other 87 114 Total 928 889 Net deferred tax assets (liabilities) 29 124 ______________________________ (1) Includes deferred tax asset valuation allowances for the Company's deferred tax assets in the US, Luxembourg, Spain, China, Singapore, the United Kingdom, Canada and France . These valuation allowances relate primarily to net operating loss carryforward benefits and other net deferred tax assets, all of which may not be realizable. (2) Includes deferred tax liabilities from the acquisition of SOFTER ( Note 4 ). For the year ended December 31, 2016 , the valuation allowance decreased by $62 million primarily due to internal restructuring in Canada, improved operating results in China, foreign currency fluctuation and net operating loss adjustments and expirations. Net Operating Loss Carryforwards As of December 31, 2016 , the Company has US federal net operating loss carryforwards of $36 million that are subject to limitation. These net operating loss carryforwards begin to expire in 2021 . At December 31, 2016 , the Company also had state net operating loss carryforwards, net of federal tax impact, of $54 million , $50 million of which are offset by a valuation allowance due to uncertain recoverability. The Company also has foreign net operating loss carryforwards as of December 31, 2016 of $2.3 billion primarily for Luxembourg, Spain, Canada, China, Singapore and the United Kingdom, with various expiration dates. Net operating loss carryforwards of $418 million in China are set to expire beginning in 2017 through 2021 . Net operating losses in most other foreign jurisdictions do not have an expiration date. Uncertain Tax Positions Activity related to uncertain tax positions is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) As of the beginning of the year 158 228 244 Increases in tax positions for the current year 9 13 7 Increases in tax positions for prior years (1) 11 76 24 Decreases in tax positions for prior years (9 ) (126 ) (46 ) Decreases due to settlements (55 ) (33 ) (1 ) As of the end of the year 114 158 228 Total uncertain tax positions that if recognized would impact the effective tax rate 87 144 245 Total amount of interest expense (benefit) and penalties recognized in the consolidated statements of operations (2) (16 ) (12 ) 2 Total amount of interest expense and penalties recognized in the consolidated balance sheets 26 43 67 ______________________________ (1) Includes uncertain tax positions related to the SOFTER acquisition ( Note 4 ) of $19 million for the year ended December 31, 2016. (2) This amount reflects interest on uncertain tax positions and release of certain tax positions as a result of audit closure that was reflected in the consolidated statements of operations. In addition, for the years ended December 31, 2016 and 2015, the Company also paid an additional $1 million and $12 million , respectively, of previously accrued amounts due to settlements of tax examinations. The Company primarily operates in the US, Germany, Belgium, Canada, China, Mexico and Singapore. Examinations are ongoing in a number of these jurisdictions. The Company's US tax returns for the years 2009 through 2012 are currently under audit by the US Internal Revenue Service. Outside of the US, the Company's German tax returns for the years 2008 through 2010 are under audit as well as certain of the Company's other subsidiaries within their respective jurisdictions. The decrease in uncertain tax positions for the year-ended December 31, 2016 is primarily due to audit closures and technical judicial clarifications. 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. In connection with the Company's US federal income tax audit for 2009 and 2010, the Company has received $192 million of proposed pre-tax adjustments related to various intercompany charges. In the event the Company is wholly unsuccessful in its defense, an actual tax assessment would result in the consumption of up to $67 million of prior foreign tax credit carryforwards. The Company believes these proposed adjustments to be without merit and is vigorously defending its position.

Management Compensation Plans

Management Compensation Plans	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Management Compensation Plans	Management Compensation Plans General Plan Description The Company issues stock-based awards under its 2009 GIP, which enables the compensation committee of the Board of Directors to award incentive and nonqualified stock options, stock appreciation rights, shares of Common Stock, restricted stock awards, RSUs and incentive bonuses (which may be paid in cash or stock or a combination thereof), any of which may be performance-based, with vesting and other award provisions that provide effective incentive to Company employees (including officers), non-management directors and other service providers. Total shares available for awards and total shares subject to outstanding awards are as follows: As of December 31, 2016 Shares Available for Awards Shares Subject to Outstanding Awards 2009 GIP 5,429,360 1,798,343 2004 Stock Incentive Plan — 12,500 (1) ______________________________ (1) No RSUs remain outstanding under the 2004 Stock Incentive Plan. The Company realized income tax benefits from stock option exercises and RSU vestings as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Income tax benefit realized 7 2 2 Amount reversed in current year related to prior year — — — Stock Options The summary of changes in stock options outstanding is as follows: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In $) (In years) (In $ millions) As of December 31, 2015 249 35.19 2.4 9 Granted — — Exercised (195 ) 33.08 Forfeited — — Expired — — As of December 31, 2016 (1) 54 42.77 2.0 2 ______________________________ (1) All stock options outstanding as of December 31, 2016 were vested and exercisable. The total intrinsic value of stock options exercised is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Intrinsic value 7 4 7 Restricted Stock Units A summary of changes in nonvested performance-based RSUs outstanding is as follows: Number of Units Weighted Average Grant Date Fair Value (In thousands) (In $) As of December 31, 2015 1,231 50.24 Granted 446 56.24 Additional performance-based RSUs granted (1) 483 48.03 Vested (966 ) 48.03 Canceled — — Forfeited (109 ) 53.55 As of December 31, 2016 1,085 53.36 ______________________________ (1) Represents additional performance-based RSU grants in 2013 and 2014 that were awarded in 2016 as a result of achieving internal profitability targets. The fair value of shares vested for performance-based RSUs is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 64 27 — A summary of changes in nonvested time-based RSUs outstanding is as follows: Employee Time-Based RSUs Director Time-Based RSUs Number of Units Weighted Average Grant Date Fair Value Number of Units Weighted Average Grant Date Fair Value (In thousands) (In $) (In thousands) (In $) As of December 31, 2015 105 60.78 14 64.94 Granted 291 67.82 15 69.76 Vested (42 ) 59.13 (15 ) 65.03 Forfeited (24 ) 59.28 — — As of December 31, 2016 330 67.32 14 69.88 The fair value of shares vested for time-based RSUs is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 4 6 9 As of December 31, 2016 , there was $35 million of unrecognized compensation cost related to RSUs, excluding actual forfeitures, which is expected to be recognized over a weighted average period of two years.

Leases

Leases	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Leases	Leases Future minimum lease payments under non-cancelable rental and lease agreements, which have initial or remaining terms in excess of one year are as follows: As of December 31, 2016 Capital Leases (In $ millions) 2017 46 2018 44 2019 45 2020 44 2021 44 Later years 146 Sublease income — Minimum lease commitments 369 Less amounts representing interest (152 ) Present value of net minimum lease obligations 217 As of December 31, 2016 Operating Leases (In $ millions) 2017 57 2018 53 2019 48 2020 42 2021 29 Later years 166 Sublease income — Minimum lease commitments 395 The Company expects that, in the normal course of business, leases that expire will be renewed or replaced by other leases. Rent expense recorded under all operating leases is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 154 154 161

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Cash Flow Hedges Cross-currency Swaps In March 2015, the Company settled its cross-currency swap agreements with notional values of $250 million / €193 million , expiring on September 11, 2020, and $225 million / €162 million , expiring on April 17, 2019, in exchange for cash of $88 million . The Company classifies cash flows from derivative instruments designated as cash flow hedges in the same category of the consolidated statement of cash flows as the cash flows from the items being hedged. Accordingly, the settlement of the cross-currency swap agreements was included in Net cash provided by (used in) operating activities in the consolidated statement of cash flows for the year ended December 31, 2015 . Net Investment Hedges The total notional amount of foreign currency denominated debt designated as a net investment hedge of net investments in foreign operations are as follows: As of December 31, 2016 2015 (In € millions) Total 850 328 Foreign Currency Forwards and Swaps Each of the contracts included in the table below will have approximately offsetting effects from actual underlying payables, receivables, intercompany loans or other assets or liabilities subject to foreign exchange remeasurement. The total US dollar equivalents of net foreign exchange exposure related to (short) long foreign exchange forward contracts outstanding by currency are as follows: 2017 Maturity (In $ millions) Currency Brazilian real (19 ) British pound sterling (78 ) Canadian dollar 33 Chinese renminbi (41 ) Euro 138 Hungarian forint 9 Indonesian rupiah (6 ) Korean won 10 Singapore dollar 30 Total 76 Gross notional values of the foreign currency forwards and swaps are as follows: As of December 31, 2016 2015 (In $ millions) Total 508 502 Hedging activity for interest rate swaps, cross-currency swaps and commodity swaps is as follows: Year Ended December 31, Statement of Operations Classification 2016 2015 2014 (In $ millions) Hedging activities 2 2 (4 ) Cost of sales; Interest income (expense) Ineffective portion of hedging activities — — — Other income (expense), net Information regarding changes in the fair value of the Company's derivative and non-derivative instruments is as follows: Gain (Loss) Recognized in Other Comprehensive Income (Loss) Gain (Loss) Recognized in Earnings (Loss) Statement of Operations Classification Year Ended December 31, Year Ended December 31, 2016 2015 2014 2016 2015 2014 (In $ millions) Designated as Cash Flow Hedges Commodity swaps 7 — — 2 — — Cost of sales Interest rate swaps — — (1 ) — — (4 ) Interest expense Cross-currency swaps — — (8 ) — 46 46 Other income (expense), net or Interest expense Total 7 — (9 ) 2 46 42 Designated as a Net Investment Hedge Foreign currency denominated debt ( Note 14 ) 61 48 23 — — — N/A Total 61 48 23 — — — Not Designated as Hedges Interest rate swaps — — — — (1 ) (3 ) Interest expense Foreign currency forwards and swaps — — — 14 (82 ) (15 ) Foreign exchange gain (loss), net; Other income (expense), net Total — — — 14 (83 ) (18 ) See Note 23 - Fair Value Measurements for additional information regarding the fair value of the Company's derivative instruments. Information regarding the gross amounts of the Company's derivative instruments and the amounts offset in the consolidated balance sheets is as follows: As of December 31, 2016 2015 (In $ millions) Derivative Assets Gross amount recognized 14 2 Gross amount offset in the consolidated balance sheets 4 — Net amount presented in the consolidated balance sheets 10 2 Gross amount not offset in the consolidated balance sheets 2 — Net amount 8 2 As of December 31, 2016 2015 (In $ millions) Derivative Liabilities Gross amount recognized 7 2 Gross amount offset in the consolidated balance sheets 4 — Net amount presented in the consolidated balance sheets 3 2 Gross amount not offset in the consolidated balance sheets 2 — Net amount 1 2

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company's financial assets and liabilities are measured at fair value on a recurring basis ( Note 2 ) as follows: Derivatives. Derivative financial instruments include commodity swaps and foreign currency forwards and swaps and are valued in the market using discounted cash flow techniques. These techniques incorporate Level 1 and Level 2 fair value measurement 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 commodity swaps and foreign currency forwards and swaps are observable in the active markets and are classified as Level 2 in the fair value measurement hierarchy. Fair Value Measurement Balance Sheet Classification Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Total As of December 31, 2016 2015 2016 2015 2016 2015 (In $ millions) Derivatives Designated as Cash Flow Hedges Commodity swaps — — 5 — 5 — Current Other assets Derivatives Not Designated as Hedges Foreign currency forwards and swaps — — 5 2 5 2 Current Other assets Total assets — — 10 2 10 2 Designated as a Net Investment Hedge Foreign currency denominated debt (1) — — — — — — Long-term Debt Derivatives Not Designated as Hedges Foreign currency forwards and swaps — — (3 ) (2 ) (3 ) (2 ) Current Other liabilities Total liabilities — — (3 ) (2 ) (3 ) (2 ) ______________________________ (1) Included in the consolidated balance sheets at carrying amount. Carrying values and fair values of financial instruments that are not carried at fair value are as follows: Fair Value Measurement Carrying Amount Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) Total As of December 31, 2016 2015 2016 2015 2016 2015 2016 2015 (In $ millions) Cost investments 155 151 — — — — — — Insurance contracts in nonqualified trusts 49 55 49 55 — — 49 55 Long-term debt, including current installments of long-term debt 2,938 2,542 2,826 2,348 217 238 3,043 2,586 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 fair value 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 fair value measurement hierarchy. The fair value of obligations under capital leases, which are included in long-term debt, is based on lease payments and discount rates, which are not observable in the market and therefore represents a Level 3 fair value measurement. As of December 31, 2016 and 2015 , the fair values of cash and cash equivalents, receivables, trade payables, short-term borrowings and the current installments of long-term debt approximate carrying values due to the short-term nature of these instruments. These items have been excluded from the table with the exception of the current installments of long-term debt.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments 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. 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 16 ). 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 December 31, 2016 are $75 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 16 ). The Company has divested numerous businesses, investments and facilities through agreements containing indemnifications or guarantees to the purchasers. Many of the obligations contain monetary and/or time limitations, which extend through 2037 . The aggregate amount of outstanding indemnifications and guarantees provided for under these agreements is $123 million as of December 31, 2016 . 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. Additionally, the Company has other outstanding commitments representing maintenance and service agreements, energy and utility agreements, consulting contracts and software agreements. As of December 31, 2016 , the Company had unconditional purchase obligations of $2.4 billion , which extend through 2036 . 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 or competition compliance, intellectual property, workers' compensation, chemical exposure, asbestos exposure, taxes, trade compliance, prior acquisitions and divestitures, claims of legacy stockholders, past waste disposal practices and release of chemicals into the environment. The Company is actively defending those matters where the Company is named as a defendant and, based on the current facts, does not believe the outcomes from these matters would be material to the Company's results of operations, cash flows or financial position.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2016
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information Year Ended December 31, 2016 2015 2014 (In $ millions) Interest paid, net of amounts capitalized 130 120 146 Taxes paid, net of refunds 129 151 199 Noncash Investing and Financing Activities Accrued capital expenditures 1 (37 ) 3 Asset retirement obligations 2 3 4 Capital expenditure reimbursement — — 4 Capital lease obligations — 6 22 Contingent consideration ( Note 4 ) — — 8 Distribution to noncontrolling interest ( Note 5 ) — (4 ) — Mitsui reimbursement — — 70

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information Business Segments The Company operates through business segments according to the nature and economic characteristics of its products and customer relationships, as well as the manner in which the information is used internally by the Company's key decision maker, who is the Company's Chief Executive Officer. The Company's business segments are as follows: • Advanced Engineered Materials The Company's Advanced Engineered Materials segment includes the engineered materials business and certain strategic affiliates. The engineered materials business develops, produces and supplies a broad portfolio of high performance specialty polymers for automotive and medical applications, as well as industrial products and consumer electronics. Together with its strategic affiliates, the Company's engineered materials business is a leading participant in the global specialty polymers industry. The primary products of Advanced Engineered Materials are used in a broad range of end-use products including fuel system components, automotive safety systems, medical applications, electronics, appliances, industrial products, battery separators, conveyor belts, filtration equipment, coatings, and electrical applications and products. • Consumer Specialties The Company's Consumer Specialties segment includes the cellulose derivatives and food ingredients businesses, which serve consumer-driven applications. These operating segments are aggregated by the Company into one reportable segment based on similar economic characteristics and similar production processes, classes of customers and selling and distribution practices. The Company's cellulose derivatives business is a leading global producer and supplier of acetate tow, acetate flake and acetate film, primarily used in filter products applications. The Company's food ingredients business is a leading global supplier of acesulfame potassium for the food and beverage industry and is a leading producer of food protection ingredients, such as potassium sorbate and sorbic acid. The Company's food ingredients business produces and sells the Qorus ® sweetener system and Sunett ® high intensity sweeteners. • Industrial Specialties The Company's Industrial Specialties segment includes the emulsion polymers and EVA polymers businesses, which are operating segments aggregated by the Company into one reportable segment based on similar products, production processes, classes of customers and selling and distribution practices as well as economic similarities over a normal business cycle. The Company's emulsion polymers 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. The Company's EVA polymers business is a leading North American manufacturer of a full range of specialty ethylene vinyl acetate resins and compounds, as well as select grades of low-density polyethylene. The Company's EVA polymers' products are used in many applications, including flexible packaging films, lamination film products, hot melt adhesives, automotive parts and carpeting. • Acetyl Intermediates The Company's Acetyl Intermediates segment includes the intermediate chemistry business, which produces and supplies acetyl products, including acetic acid, vinyl acetate monomer, acetic anhydride and acetate esters. These products are generally used as starting materials for colorants, paints, adhesives, coatings and pharmaceuticals. The Acetyl Intermediates segment also produces organic solvents and intermediates for pharmaceutical, agricultural and chemical products. • Other Activities Other Activities primarily consists of corporate center costs, including administrative activities such as finance, information technology and human resource functions, interest income and expense associated with financing activities and results of the Company's captive insurance companies. Other Activities also includes the components of net periodic benefit cost (interest cost, expected return on assets and net actuarial gains and losses) for the Company's defined benefit pension plans and other postretirement plans not allocated to the Company's business segments. The business segment management reporting and controlling systems are based on the same accounting policies as those described in the summary of significant accounting policies ( Note 2 ). Sales transactions between business segments are generally recorded at values that approximate third-party selling prices. Advanced Engineered Materials Consumer Specialties Industrial Specialties Acetyl Intermediates Other Activities Eliminations Consolidated (In $ millions) Year Ended December 31, 2016 Net sales 1,444 929 (1) 979 (2) 2,441 (3) — (404 ) 5,389 Other (charges) gains, net ( Note 18 ) (2 ) (2 ) (3 ) (3 ) (1 ) — (11 ) Operating profit (loss) 350 302 105 340 (205 ) 1 893 Equity in net earnings (loss) of affiliates 122 3 — 6 24 — 155 Depreciation and amortization 92 45 34 107 12 — 290 Capital expenditures 73 38 57 67 12 — 247 (4) As of December 31, 2016 Goodwill and intangible assets, net 517 244 46 183 — — 990 Total assets 2,792 1,324 758 2,440 1,043 — 8,357 Year Ended December 31, 2015 Net sales 1,326 969 (1) 1,082 (2) 2,744 (3) — (447 ) 5,674 Other (charges) gains, net ( Note 18 ) (7 ) (25 ) (10 ) (300 ) (9 ) — (351 ) Operating profit (loss) 235 262 72 (3 ) (240 ) — 326 Equity in net earnings (loss) of affiliates 150 2 — 6 23 — 181 Depreciation and amortization 99 60 64 123 11 — 357 Capital expenditures 73 65 56 282 7 — 483 (4) As of December 31, 2015 Goodwill and intangible assets, net 338 249 49 194 — — 830 Total assets 2,324 1,458 747 2,387 1,670 — 8,586 Year Ended December 31, 2014 Net sales 1,459 1,160 (1) 1,224 (2) 3,493 (3) — (534 ) 6,802 Other (charges) gains, net ( Note 18 ) (1 ) 16 (1 ) (3 ) 4 — 15 Operating profit (loss) 221 388 76 558 (485 ) — 758 Equity in net earnings (loss) of affiliates 161 9 — 20 56 — 246 Depreciation and amortization 106 43 50 81 12 — 292 Capital expenditures 65 103 29 478 6 — 681 (4) ______________________________ (1) Includes intersegment sales of $0 million , $0 million and $2 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. (2) Includes intersegment sales of $3 million , $0 million and $0 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. (3) Includes intersegment sales of $401 million , $447 million and $532 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. (4) Includes an increase in accrued capital expenditures of $1 million , a decrease of $37 million and an increase of $3 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. Geographical Area Information The net sales based on the geographic location of the Company's facilities are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Belgium 408 417 480 Canada 123 162 204 China 745 800 996 Germany 1,540 1,779 2,156 Mexico 214 204 259 Singapore 758 703 632 US 1,451 1,463 1,899 Other 150 146 176 Total 5,389 5,674 6,802 Property, plant and equipment, net based on the geographic location of the Company's facilities is as follows: As of December 31, 2016 2015 (In $ millions) Belgium 55 56 Canada 132 137 China 359 417 Germany 868 931 Mexico 159 156 Singapore 90 68 US 1,798 1,774 Other 116 70 Total 3,577 3,609

Earnings (Loss) Per Share

Earnings (Loss) Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Earnings (Loss) Per Share Year Ended December 31, 2016 2015 2014 (In $ millions, except share data) Amounts attributable to Celanese Corporation Earnings (loss) from continuing operations 902 306 631 Earnings (loss) from discontinued operations (2 ) (2 ) (7 ) Net earnings (loss) 900 304 624 Weighted average shares - basic 144,939,433 150,838,050 155,012,370 Incremental shares attributable to equity awards (1) 728,748 1,449,905 1,154,623 Weighted average shares - diluted 145,668,181 152,287,955 156,166,993 ______________________________ (1) Excludes 836 , 2,903 and 0 equity award shares for the years ended December 31, 2016 , 2015 and 2014 , respectively, as their effect would have been antidilutive.

Consolidating Guarantor Financi

Consolidating Guarantor Financial Information	12 Months Ended
	Dec. 31, 2016
Consolidating Guarantor Financial Information [Abstract]
Consolidating Guarantor Financial Information	Consolidating Guarantor Financial Information The Senior Notes were issued by Celanese US ("Issuer") and are guaranteed by Celanese Corporation ("Parent Guarantor") and the Subsidiary Guarantors ( Note 14 ). The Issuer and Subsidiary Guarantors are 100% owned subsidiaries of the Parent Guarantor. The Parent Guarantor and Subsidiary Guarantors have guaranteed the Notes fully and unconditionally and jointly and severally. For cash management purposes, the Company transfers cash between the Parent Guarantor, Issuer, Subsidiary Guarantors and non-guarantors through intercompany financing arrangements, contributions or declaration of dividends between the respective parent and its subsidiaries. The transfer of cash under these activities facilitates the ability of the recipient to make specified third-party payments for principal and interest on the Company's outstanding debt, Common Stock dividends and Common Stock repurchases. The consolidating statements of cash flow present such intercompany financing activities, contributions and dividends consistent with how such activity would be presented in a stand-alone statement of cash flows. The Company has not presented separate financial information and other disclosures for each of its Subsidiary Guarantors because it believes such financial information and other disclosures would not provide investors with any additional information that would be material in evaluating the sufficiency of the guarantees. For the year ended December 31, 2015, $54 million in interest expense was allocated from the Issuer to Subsidiary Guarantors. The consolidating financial information for the Parent Guarantor, the Issuer, the Subsidiary Guarantors and the non-guarantors are as follows: CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF OPERATIONS Year Ended December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net sales — — 2,162 4,322 (1,095 ) 5,389 Cost of sales — — (1,657 ) (3,428 ) 1,101 (3,984 ) Gross profit — — 505 894 6 1,405 Selling, general and administrative expenses — — (112 ) (304 ) — (416 ) Amortization of intangible assets — — (5 ) (4 ) — (9 ) Research and development expenses — — (32 ) (46 ) — (78 ) Other (charges) gains, net — — — (11 ) — (11 ) Foreign exchange gain (loss), net — — — (1 ) — (1 ) Gain (loss) on disposition of businesses and assets, net — — (8 ) 17 (6 ) 3 Operating profit (loss) — — 348 545 — 893 Equity in net earnings (loss) of affiliates 898 939 653 146 (2,481 ) 155 Interest expense — (16 ) (94 ) (29 ) 19 (120 ) Refinancing expense — (4 ) (2 ) — — (6 ) Interest income — 12 4 5 (19 ) 2 Dividend income - cost investments — — — 107 1 108 Other income (expense), net — (1 ) 1 (2 ) — (2 ) Earnings (loss) from continuing operations before tax 898 930 910 772 (2,480 ) 1,030 Income tax (provision) benefit 2 (32 ) (53 ) (36 ) (3 ) (122 ) Earnings (loss) from continuing operations 900 898 857 736 (2,483 ) 908 Earnings (loss) from operation of discontinued operations — — (2 ) (1 ) — (3 ) Gain (loss) on disposition of discontinued operations — — — — — — Income tax (provision) benefit from discontinued operations — — — 1 — 1 Earnings (loss) from discontinued operations — — (2 ) — — (2 ) Net earnings (loss) 900 898 855 736 (2,483 ) 906 Net (earnings) loss attributable to noncontrolling interests — — — (6 ) — (6 ) Net earnings (loss) attributable to Celanese Corporation 900 898 855 730 (2,483 ) 900 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF OPERATIONS Year Ended December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net sales — — 2,410 4,485 (1,221 ) 5,674 Cost of sales — — (1,729 ) (3,897 ) 1,270 (4,356 ) Gross profit — — 681 588 49 1,318 Selling, general and administrative expenses — — (242 ) (264 ) — (506 ) Amortization of intangible assets — — (5 ) (6 ) — (11 ) Research and development expenses — — (78 ) (41 ) — (119 ) Other (charges) gains, net — — (5 ) (346 ) — (351 ) Foreign exchange gain (loss), net — — — 4 — 4 Gain (loss) on disposition of businesses and assets, net — — (6 ) (3 ) — (9 ) Operating profit (loss) — — 345 (68 ) 49 326 Equity in net earnings (loss) of affiliates 302 314 84 162 (681 ) 181 Interest expense — (77 ) (76 ) (36 ) 70 (119 ) Refinancing expense — — — — — — Interest income — 18 40 13 (70 ) 1 Dividend income - cost investments — — — 107 — 107 Other income (expense), net — (2 ) 2 (8 ) — (8 ) Earnings (loss) from continuing operations before tax 302 253 395 170 (632 ) 488 Income tax (provision) benefit 2 49 (133 ) (98 ) (21 ) (201 ) Earnings (loss) from continuing operations 304 302 262 72 (653 ) 287 Earnings (loss) from operation of discontinued operations — — (3 ) — — (3 ) Gain (loss) on disposition of discontinued operations — — — — — — Income tax (provision) benefit from discontinued operations — — 1 — — 1 Earnings (loss) from discontinued operations — — (2 ) — — (2 ) Net earnings (loss) 304 302 260 72 (653 ) 285 Net (earnings) loss attributable to noncontrolling interests — — — 19 — 19 Net earnings (loss) attributable to Celanese Corporation 304 302 260 91 (653 ) 304 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF OPERATIONS Year Ended December 31, 2014 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net sales — — 2,860 5,166 (1,224 ) 6,802 Cost of sales — — (1,822 ) (4,550 ) 1,186 (5,186 ) Gross profit — — 1,038 616 (38 ) 1,616 Selling, general and administrative expenses — — (313 ) (445 ) — (758 ) Amortization of intangible assets — — (7 ) (13 ) — (20 ) Research and development expenses — — (47 ) (39 ) — (86 ) Other (charges) gains, net — — 28 (13 ) — 15 Foreign exchange gain (loss), net — — — (2 ) — (2 ) Gain (loss) on disposition of businesses and assets, net — — (11 ) 4 — (7 ) Operating profit (loss) — — 688 108 (38 ) 758 Equity in net earnings (loss) of affiliates 622 806 90 210 (1,482 ) 246 Interest expense — (190 ) (22 ) (78 ) 143 (147 ) Refinancing expense — (29 ) — — — (29 ) Interest income — 57 72 15 (143 ) 1 Dividend income - cost investments — — — 116 — 116 Other income (expense), net — — 4 (8 ) — (4 ) Earnings (loss) from continuing operations before tax 622 644 832 363 (1,520 ) 941 Income tax (provision) benefit 2 (22 ) (237 ) (71 ) 14 (314 ) Earnings (loss) from continuing operations 624 622 595 292 (1,506 ) 627 Earnings (loss) from operation of discontinued operations — — (8 ) (3 ) — (11 ) Gain (loss) on disposition of discontinued operations — — — — — — Income tax (provision) benefit from discontinued operations — — 3 1 — 4 Earnings (loss) from discontinued operations — — (5 ) (2 ) — (7 ) Net earnings (loss) 624 622 590 290 (1,506 ) 620 Net (earnings) loss attributable to noncontrolling interests — — — 4 — 4 Net earnings (loss) attributable to Celanese Corporation 624 622 590 294 (1,506 ) 624 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net earnings (loss) 900 898 855 736 (2,483 ) 906 Other comprehensive income (loss), net of tax Unrealized gain (loss) on marketable securities — — — — — — Foreign currency translation (11 ) (11 ) (65 ) (73 ) 149 (11 ) Gain (loss) from cash flow hedges 5 5 5 5 (15 ) 5 Pension and postretirement benefits (4 ) (4 ) (4 ) (2 ) 10 (4 ) Total other comprehensive income (loss), net of tax (10 ) (10 ) (64 ) (70 ) 144 (10 ) Total comprehensive income (loss), net of tax 890 888 791 666 (2,339 ) 896 Comprehensive (income) loss attributable to noncontrolling interests — — — (6 ) — (6 ) Comprehensive income (loss) attributable to Celanese Corporation 890 888 791 660 (2,339 ) 890 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net earnings (loss) 304 302 260 72 (653 ) 285 Other comprehensive income (loss), net of tax Unrealized gain (loss) on marketable securities — — — — — — Foreign currency translation (188 ) (188 ) (181 ) (231 ) 600 (188 ) Gain (loss) from cash flow hedges 2 2 5 1 (8 ) 2 Pension and postretirement benefits 3 3 3 2 (8 ) 3 Total other comprehensive income (loss), net of tax (183 ) (183 ) (173 ) (228 ) 584 (183 ) Total comprehensive income (loss), net of tax 121 119 87 (156 ) (69 ) 102 Comprehensive (income) loss attributable to noncontrolling interests — — — 19 — 19 Comprehensive income (loss) attributable to Celanese Corporation 121 119 87 (137 ) (69 ) 121 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2014 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net earnings (loss) 624 622 590 290 (1,506 ) 620 Other comprehensive income (loss), net of tax Unrealized gain (loss) on marketable securities 1 1 1 1 (3 ) 1 Foreign currency translation (148 ) (148 ) (31 ) (65 ) 244 (148 ) Gain (loss) from cash flow hedges 40 40 (1 ) (7 ) (32 ) 40 Pension and postretirement benefits (54 ) (54 ) (54 ) (5 ) 113 (54 ) Total other comprehensive income (loss), net of tax (161 ) (161 ) (85 ) (76 ) 322 (161 ) Total comprehensive income (loss), net of tax 463 461 505 214 (1,184 ) 459 Comprehensive (income) loss attributable to noncontrolling interests — — — 4 — 4 Comprehensive income (loss) attributable to Celanese Corporation 463 461 505 218 (1,184 ) 463 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING BALANCE SHEET As of December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) ASSETS Current Assets Cash and cash equivalents — — 51 587 — 638 Trade receivables - third party and affiliates — — 107 819 (125 ) 801 Non-trade receivables, net 40 499 249 308 (873 ) 223 Inventories, net — — 239 526 (45 ) 720 Deferred income taxes — — — — — — Marketable securities, at fair value — — 30 — — 30 Other assets — 42 25 76 (83 ) 60 Total current assets 40 541 701 2,316 (1,126 ) 2,472 Investments in affiliates 2,548 4,029 3,655 752 (10,132 ) 852 Property, plant and equipment, net — — 1,049 2,528 — 3,577 Deferred income taxes — — 91 86 (18 ) 159 Other assets — 705 133 156 (687 ) 307 Goodwill — — 314 482 — 796 Intangible assets, net — — 48 146 — 194 Total assets 2,588 5,275 5,991 6,466 (11,963 ) 8,357 LIABILITIES AND EQUITY Current Liabilities Short-term borrowings and current installments of long-term debt - third party and affiliates — 6 133 250 (271 ) 118 Trade payables - third party and affiliates — — 226 524 (125 ) 625 Other liabilities — 58 167 262 (165 ) 322 Deferred income taxes — — — — — — Income taxes payable — — 454 75 (517 ) 12 Total current liabilities — 64 980 1,111 (1,078 ) 1,077 Noncurrent Liabilities Long-term debt, net of unamortized deferred financing costs — 2,647 727 210 (694 ) 2,890 Deferred income taxes — 16 — 132 (18 ) 130 Uncertain tax positions — — 3 130 (2 ) 131 Benefit obligations — — 636 257 — 893 Other liabilities — — 74 142 (1 ) 215 Total noncurrent liabilities — 2,663 1,440 871 (715 ) 4,259 Total Celanese Corporation stockholders' equity 2,588 2,548 3,571 4,051 (10,170 ) 2,588 Noncontrolling interests — — — 433 — 433 Total equity 2,588 2,548 3,571 4,484 (10,170 ) 3,021 Total liabilities and equity 2,588 5,275 5,991 6,466 (11,963 ) 8,357 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING BALANCE SHEET As of December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) ASSETS Current Assets Cash and cash equivalents — — 21 946 — 967 Trade receivables - third party and affiliates — — 132 722 (148 ) 706 Non-trade receivables, net 37 580 298 522 (1,152 ) 285 Inventories, net — — 258 474 (50 ) 682 Deferred income taxes — — 19 68 (19 ) 68 Marketable securities, at fair value — — 30 — — 30 Other assets — 12 28 40 (31 ) 49 Total current assets 37 592 786 2,772 (1,400 ) 2,787 Investments in affiliates 2,341 3,947 3,909 738 (10,097 ) 838 Property, plant and equipment, net — — 1,001 2,608 — 3,609 Deferred income taxes — 2 178 42 — 222 Other assets — 418 151 227 (496 ) 300 Goodwill — — 314 391 — 705 Intangible assets, net — — 51 74 — 125 Total assets 2,378 4,959 6,390 6,852 (11,993 ) 8,586 LIABILITIES AND EQUITY Current Liabilities Short-term borrowings and current installments of long-term debt - third party and affiliates — 479 181 213 (360 ) 513 Trade payables - third party and affiliates — — 240 495 (148 ) 587 Other liabilities — 28 281 283 (262 ) 330 Deferred income taxes — 26 — 23 (19 ) 30 Income taxes payable — — 537 116 (563 ) 90 Total current liabilities — 533 1,239 1,130 (1,352 ) 1,550 Noncurrent Liabilities Long-term debt, net of unamortized deferred financing costs — 2,078 706 187 (503 ) 2,468 Deferred income taxes — — — 136 — 136 Uncertain tax positions — 7 29 131 — 167 Benefit obligations — — 960 229 — 1,189 Other liabilities — — 93 155 (1 ) 247 Total noncurrent liabilities — 2,085 1,788 838 (504 ) 4,207 Total Celanese Corporation stockholders' equity 2,378 2,341 3,363 4,433 (10,137 ) 2,378 Noncontrolling interests — — — 451 — 451 Total equity 2,378 2,341 3,363 4,884 (10,137 ) 2,829 Total liabilities and equity 2,378 4,959 6,390 6,852 (11,993 ) 8,586 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF CASH FLOWS Year Ended December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net cash provided by (used in) operating activities 695 711 (21 ) 872 (1,364 ) 893 Investing Activities Capital expenditures on property, plant and equipment — — (139 ) (107 ) — (246 ) Acquisitions, net of cash acquired — — — (178 ) — (178 ) Proceeds from sale of businesses and assets, net — — 1 11 — 12 Capital expenditures related to Fairway Methanol LLC — — — — — — Return of capital from subsidiary — 145 758 — (903 ) — Contributions to subsidiary — — — — — — Intercompany loan receipts (disbursements) — (283 ) 19 90 174 — Other, net — — (10 ) (17 ) — (27 ) Net cash provided by (used in) investing activities — (138 ) 629 (201 ) (729 ) (439 ) Financing Activities Short-term borrowings (repayments), net — (371 ) 1 (1 ) 19 (352 ) Proceeds from short-term borrowings — — — 53 — 53 Repayments of short-term borrowings — — — (90 ) — (90 ) Proceeds from long-term debt — 1,589 746 — (826 ) 1,509 Repayments of long-term debt — (1,083 ) (635 ) (42 ) 633 (1,127 ) Purchases of treasury stock, including related fees (500 ) — — — — (500 ) Dividends to parent — (695 ) (669 ) — 1,364 — Contributions from parent — — — — — — Stock option exercises 6 — — — — 6 Series A common stock dividends (201 ) — — — — (201 ) Return of capital to parent — — — (903 ) 903 — (Distributions to) contributions from noncontrolling interests — — — (24 ) — (24 ) Other, net — (13 ) (21 ) 1 — (33 ) Net cash provided by (used in) financing activities (695 ) (573 ) (578 ) (1,006 ) 2,093 (759 ) Exchange rate effects on cash and cash equivalents — — — (24 ) — (24 ) Net increase (decrease) in cash and cash equivalents — — 30 (359 ) — (329 ) Cash and cash equivalents as of beginning of period — — 21 946 — 967 Cash and cash equivalents as of end of period — — 51 587 — 638 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF CASH FLOWS Year Ended December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net cash provided by (used in) operating activities 591 536 529 422 (1,216 ) 862 Investing Activities Capital expenditures on property, plant and equipment — — (128 ) (104 ) — (232 ) Acquisitions, net of cash acquired — — (3 ) (3 ) — (6 ) Proceeds from sale of businesses and assets, net — — — 4 — 4 Capital expenditures related to Fairway Methanol LLC — — (20 ) (268 ) — (288 ) Return of capital from subsidiary — — — — — — Contributions to subsidiary — — (120 ) — 120 — Intercompany loan receipts (disbursements) — (333 ) (33 ) (15 ) 381 — Other, net — — (12 ) (24 ) — (36 ) Net cash provided by (used in) investing activities — (333 ) (316 ) (410 ) 501 (558 ) Financing Activities Short-term borrowings (repayments), net — 383 — — (33 ) 350 Proceeds from short-term borrowings — — — 80 — 80 Repayments of short-term borrowings — — — (83 ) — (83 ) Proceeds from long-term debt — 15 406 — (421 ) — Repayments of long-term debt — (9 ) (74 ) (14 ) 73 (24 ) Purchases of treasury stock, including related fees (420 ) — — — — (420 ) Dividends to parent — (592 ) (624 ) — 1,216 — Contributions from parent — — — 120 (120 ) — Stock option exercises 3 — — — — 3 Series A common stock dividends (174 ) — — — — (174 ) Return of capital to parent — — — — — — (Distributions to) contributions from noncontrolling interests — — — 214 — 214 Other, net — — (10 ) (2 ) — (12 ) Net cash provided by (used in) financing activities (591 ) (203 ) (302 ) 315 715 (66 ) Exchange rate effects on cash and cash equivalents — — — (51 ) — (51 ) Net increase (decrease) in cash and cash equivalents — — (89 ) 276 — 187 Cash and cash equivalents as of beginning of period — — 110 670 — 780 Cash and cash equivalents as of end of period — — 21 946 — 967 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF CASH FLOWS Year Ended December 31, 2014 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net cash provided by (used in) operating activities 389 498 644 433 (1,002 ) 962 Investing Activities Capital expenditures on property, plant and equipment — — (183 ) (71 ) — (254 ) Acquisitions, net of cash acquired — — (10 ) — — (10 ) Proceeds from sale of businesses and assets, net — — — — — — Capital expenditures related to Fairway Methanol LLC — — (44 ) (380 ) — (424 ) Return of capital from subsidiary — 28 51 — (79 ) — Contributions to subsidiary — — (213 ) — 213 — Intercompany loan receipts (disbursements) — (70 ) (93 ) (75 ) 238 — Other, net — — (9 ) (8 ) — (17 ) Net cash provided by (used in) investing activities — (42 ) (501 ) (534 ) 372 (705 ) Financing Activities Short-term borrowings (repayments), net — 93 6 (15 ) (93 ) (9 ) Proceeds from short-term borrowings — — — 62 — 62 Repayments of short-term borrowings — — — (91 ) — (91 ) Proceeds from long-term debt — 462 75 — (150 ) 387 Repayments of long-term debt — (611 ) (5 ) (15 ) 5 (626 ) Purchases of treasury stock, including related fees (250 ) — — — — (250 ) Dividends to parent — (390 ) (390 ) (222 ) 1,002 — Contributions from parent — — — 213 (213 ) — Stock option exercises 5 — — — — 5 Series A common stock dividends (144 ) — — — — (144 ) Return of capital to parent — — — (79 ) 79 — (Distributions to) contributions from noncontrolling interests — — — 264 — 264 Other, net — (10 ) (3 ) — — (13 ) Net cash provided by (used in) financing activities (389 ) (456 ) (317 ) 117 630 (415 ) Exchange rate effects on cash and cash equivalents — — — (46 ) — (46 ) Net increase (decrease) in cash and cash equivalents — — (174 ) (30 ) — (204 ) Cash and cash equivalents as of beginning of period — — 284 700 — 984 Cash and cash equivalents as of end of period — — 110 670 — 780

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Event [Line Items]
Subsequent Events	Subsequent Events On February 1, 2017, the Company signed a definitive agreement to acquire the nylon compounding division of Nilit Group, an independent producer of high performance nylon, resins, fibers and compounds. Subject to closing conditions, Celanese will acquire Nilit Plastics' nylon compounding product portfolio, customer agreements and manufacturing, technology and commercial facilities. The acquisition will be funded from cash on hand or from borrowings under the Company's senior unsecured revolving credit facility. The acquired operations will be included in the Advanced Engineered Materials segment. The Company expects the acquisition to close in the second or third quarter of 2017, subject to regulatory approvals and other customary closing conditions, and does not expect the acquisition to be material to its 2017 financial position or results of operations.

Summary of Accounting Policies

Summary of Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Consolidation principles	Consolidation Principles The consolidated financial statements have been prepared in accordance with US GAAP for all periods presented and include the accounts of the Company and its majority owned subsidiaries over which the Company exercises control. All intercompany accounts and transactions have been eliminated in consolidation.
Estimates and assumptions	Estimates and Assumptions The preparation of 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 consolidated financial statements and the reported amounts of net sales, 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.
Fair Value Measurement	Fair Value Measurements The Company determines fair value based on the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers assumptions that market participants would use when pricing the asset or liability. Market participant assumptions are categorized by a three-tiered fair value hierarchy which prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. If a financial instrument uses inputs that fall in different levels of the hierarchy, the instrument will be categorized based upon the lowest level of input that is significant to the fair value calculation. Valuations for fund investments, such as common/collective trusts, registered investment companies and short-term investment funds, 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 levels of inputs used to measure fair value are 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
Purchase Accounting	Purchase Accounting The Company recognizes the identifiable tangible and intangible assets acquired and liabilities assumed based on their estimated fair values as of the acquisition date. The excess of purchase price over the aggregate fair values is recorded as goodwill. Intangible assets are valued using the relief from royalty, multi-period excess earnings and discounted cash flow methodologies, which are considered Level 3 measurements. The relief from royalty method estimates the Company's theoretical royalty savings from ownership of the intangible asset. Key assumptions used in this method include discount rates, royalty rates, growth rates, sales projections and terminal value rates. Key assumptions used in the multi-period excess earnings method include discount rates, retention rates, growth rates, sales projections, expense projections and contributory asset charges. Key assumptions used in the discounted cash flow valuation model include discount rates, growth rates, cash flow projections and terminal value rates. All of these methodologies require significant management judgment and, therefore, are susceptible to change. The Company calculates the fair value of the identifiable tangible and intangible assets acquired and liabilities assumed to allocate the purchase price at the acquisition date. The Company may use the assistance of third-party valuation consultants.
Cash and Cash Equivalents	Cash and Cash Equivalents All highly liquid investments with original maturities of three months or less are considered cash equivalents.
Allowance for doubtful accounts	Allowance for Doubtful Accounts The Company maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company believes, based on historical results, the likelihood of actual write-offs having a material impact on financial results is low. The allowance for doubtful accounts is estimated using factors such as customer credit ratings, past collection history and general risk profile. Receivables are charged against the allowance for doubtful accounts when it is probable that the receivable will not be recovered.
Inventories	Inventories Inventories, including stores and supplies, are stated at the lower of cost and net realizable value. Cost for inventories is determined using the first-in, first-out ("FIFO") method. Cost includes raw materials, direct labor and manufacturing overhead. Cost for stores and supplies is primarily determined by the average cost method.
Investments in marketable securities	Investments • Marketable Securities The cost of available-for-sale securities sold is determined using the specific identification method.
Investments in affiliates	Investments in Affiliates Investments where the Company can exercise significant influence over operating and financial policies of an investee, which is generally considered when an investor owns 20% or more of the voting stock of an investee, are accounted for under the equity method of accounting. Investments where the Company does not exercise significant influence are accounted for under the cost method of accounting. The Company determined it cannot exercise significant influence over certain investments where the Company owns greater than a 20% interest due to local government investment in and influence over these entities, limitations on the Company's involvement in the day-to-day operations and the present inability of the entities to provide timely financial information prepared in accordance with US GAAP. Accordingly, these investments are accounted for under the cost method of accounting. In certain instances, the financial information of the Company's equity investees is not available on a timely basis. Accordingly, the Company records its proportional share of the investee's earnings or losses on a consistent lag of no more than one quarter . When required to assess the recoverability of its investments in affiliates, the Company estimates fair value using a discounted cash flow model. The Company may engage third-party valuation consultants to assist with this process.
Property, plant and equipment, net	Property, Plant and Equipment, Net Land is recorded at historical cost. Buildings, machinery and equipment, including capitalized interest, and property under capital lease agreements, are recorded at cost less accumulated depreciation. The Company records depreciation and amortization in its consolidated statements of operations as either Cost of sales, Selling, general and administrative expenses or Research and development expenses consistent with the utilization of the underlying assets. Depreciation is calculated on a straight-line basis over the following estimated useful lives of depreciable assets: Land improvements 20 years Buildings and improvements 30 years Machinery and equipment 20 years Leasehold improvements are amortized over 10 years or the remaining life of the respective lease, whichever is shorter. Accelerated depreciation is recorded when the estimated useful life is shortened. Ordinary repair and maintenance costs, including costs for planned maintenance turnarounds, that do not extend the useful life of the asset are charged to earnings as incurred. Fully depreciated assets are retained in property and depreciation accounts until sold or otherwise disposed. In the case of disposals, assets and related depreciation are removed from the accounts, and the net amounts, less proceeds from disposal, are included in earnings. The Company assesses the recoverability of the carrying amount of its property, plant and equipment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. An impairment loss would be assessed when estimated undiscounted future cash flows from the operation and disposition of the asset group are less than the carrying amount of the asset group. Asset groups have identifiable cash flows and are largely independent of other asset groups. Measurement of an impairment loss is based on the excess of the carrying amount of the asset group over its fair value. The Company calculates the fair value using a discounted cash flow model incorporating discount rates commensurate with the risks involved for the asset group, which is classified as a Level 3 fair value measurement. 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 involve significant judgment and are based on management's estimate of current and forecasted market conditions and cost structure. Impairment losses are generally recorded to Other (charges) gains, net in the consolidated statements of operations.
Goodwill and other intangible assets	Goodwill and Intangible Assets, Net The Company assesses the recoverability of the carrying amount of its reporting unit goodwill and indefinite-lived intangible assets either qualitatively or quantitatively annually during the third quarter of its fiscal year using June 30 balances or whenever events or changes in circumstances indicate that the carrying amount of the asset may not be fully recoverable. The Company assesses the recoverability of finite-lived intangible assets in the same manner as for property, plant and equipment. Impairment losses are generally recorded to Other (charges) gains, net in the consolidated statements of operations. • Goodwill Recoverability of the carrying amount of goodwill is measured at the reporting unit level. In performing a quantitative analysis, the Company measures the recoverability of goodwill for each reporting unit using a discounted cash flow model incorporating discount rates commensurate with the risks involved, which is classified as a Level 3 fair value measurement. The key assumptions used in the discounted cash flow valuation model include discount rates, growth rates, tax 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. Discount rates used are similar to the rates estimated by the weighted average cost of capital ("WACC") considering any differences in company-specific risk factors. The Company may engage third-party valuation consultants to assist with this process. • Indefinite-lived Intangible Assets Management tests indefinite-lived intangible assets for impairment quantitatively utilizing the relief from royalty method under the income approach to determine the estimated fair value for each indefinite-lived intangible asset, which is classified as a Level 3 fair value measurement. The relief from royalty method estimates the Company's theoretical royalty savings from ownership of the intangible asset. The key assumptions used in this model include discount rates, royalty rates, growth rates, tax rates, sales projections and terminal value rates. Discount rates, royalty rates, growth rates and sales projections are the assumptions most sensitive and susceptible to change as they require significant management judgment. Discount rates used are similar to the rates estimated by the WACC considering any differences in company-specific risk factors. Royalty rates are established by management and are periodically substantiated by third-party valuation consultants. • Definite-lived Intangible Assets Customer-related intangible assets and other intangible assets with finite lives are amortized on a straight-line basis over their estimated useful lives, which range from three to 30 years .
Derivative and hedging instruments	Derivative and Hedging Instruments The Company manages its exposures to interest rates, foreign exchange rates and commodity prices through a risk management program that includes the use of derivative financial instruments. The Company does not use derivative financial instruments for speculative trading purposes. The fair value of derivative instruments other than foreign currency forwards and swaps is recorded as an asset or liability on a net basis at the balance sheet date. • Interest Rate Risk Management To reduce the interest rate risk inherent in its 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 fix the London Interbank Offered Rate ("LIBOR") portion of the Company's US dollar denominated variable rate borrowings. Prior to December 2014, all or a portion of these interest rate swap agreements were designated as cash flow hedges. Accordingly, to the extent the cash flow hedge was effective, changes in the fair value of interest rate swaps were included in gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Hedge accounting is discontinued when the interest rate swap is no longer effective in offsetting cash flows attributable to the hedged risk, the interest rate swap expires or the cash flow hedge is dedesignated because it is no longer probable that the forecasted transaction will occur according to the original strategy. In December 2014, the Company dedesignated as cash flow hedges a notional value of $500 million US dollar interest rate swap agreements expiring January 2, 2016 . When a cash flow hedge is dedesignated and it is probable that the forecasted transaction will not occur, any related amounts previously included in Accumulated other comprehensive income (loss), net would be reclassified to earnings immediately. Mark-to-market adjustments on dedesignated interest rate swap agreements are included in Interest expense in the consolidated statements of operations through their expiration. • Foreign Exchange Risk Management Certain subsidiaries of the Company have assets and liabilities denominated in currencies other than their respective functional currencies, which creates foreign exchange risk. The Company also is exposed to foreign currency fluctuations on transactions with third-party entities as well as intercompany transactions. The Company minimizes its exposure to foreign currency fluctuations by entering into foreign currency forwards and swaps. These foreign currency forwards and swaps are not designated as hedges. Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on intercompany balances are included in Other income (expense), net in the consolidated statements of operations. Gains and losses on foreign currency forwards and swaps entered into to offset foreign exchange impacts on all other assets and liabilities are included in Foreign exchange gain (loss), net in the consolidated statements of operations. The Company uses non-derivative financial instruments that may give rise to foreign currency transaction gains or losses to hedge the foreign currency exposure of net investments in foreign operations. Accordingly, the effective portion of gains and losses from remeasurement of the non-derivative financial instrument is included in foreign currency translation within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Gains and losses are reclassified to earnings in the period the hedged investment is sold or liquidated. Prior to March 2015, the Company used cross-currency swap contracts to hedge its exposure to foreign currency exchange rate risk associated with certain intercompany loans. Under the terms of the contracts, the Company would have exchanged Euro fixed interest for US dollar fixed interest and at maturity would have exchanged Euro notional values for US dollar notional values. The terms of the contracts corresponded to the related hedged intercompany loans. The cross-currency swap contracts were designated as cash flow hedges. Accordingly, the effective portion of the unrealized gains and losses on the contracts was included in gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Gains and losses were reclassified to Interest expense in the consolidated statements of operations over the period that the hedged loans affected earnings. The Euro notional values were marked-to-market based on the current spot rate and gains and losses from remeasurement of the Euro notional values, as well as the foreign exchange impact on the intercompany loans, were included in Other income (expense), net in the consolidated statements of operations. In March 2015, the Company settled its cross-currency swap agreements. • Commodity Risk Management The Company has exposure to the prices of commodities in its procurement of certain raw materials. The Company manages its exposure to commodity risk primarily through the use of long-term supply agreements, multi-year purchasing and sales agreements and forward purchase contracts. The Company regularly assesses its practice of using forward purchase contracts and other raw material hedging instruments in accordance with changes in economic conditions. Forward purchases and swap contracts for raw materials are principally settled through physical delivery of the commodity. For qualifying contracts, the Company has elected to apply the normal purchases and normal sales exception based on the probability at the inception and throughout the term of the contract that the Company would not net settle and the transaction would result in the physical delivery of the commodity. Accordingly, realized gains and losses on these contracts are included in the cost of the commodity upon the settlement of the contract. The Company also uses commodity swaps to hedge the risk of fluctuating price changes in certain raw materials and in which physical settlement does not occur. These commodity swaps fix the variable fee component of the price of certain commodities. All or a portion of these commodity swap agreements may be designated as cash flow hedges. Accordingly, to the extent the cash flow hedge was effective, changes in the fair value of commodity swaps are included in gain (loss) from cash flow hedges within Accumulated other comprehensive income (loss), net in the consolidated balance sheets. Gains and losses are reclassified to earnings in the period that the hedged item affected earnings.
Insurance loss reserves	Insurance Loss Reserves The Company has two wholly-owned insurance companies (the "Captives") that are used as a form of self-insurance for liability and workers compensation risks. Capitalization of the Captives is determined by regulatory guidelines. Premiums written are recognized as revenue based on policy periods. One of the Captives also insures certain third-party risks. The Captives use reinsurance arrangements to reduce their risks, however these arrangements do not relieve the Captives from their obligations to policyholders. The financial condition of the Captives' reinsurers are monitored to minimize exposure to insolvencies. However, failure of the reinsurers to honor their obligations could result in losses to the Captives. Claim reserves are established when sufficient information is available to indicate a specific policy is involved and the Company can reasonably estimate its liability. These reserves are based on management estimates and periodic actuarial valuations. In addition, reserves have been established to cover exposures for both known and unreported claims. Estimates of these liabilities are reviewed and updated regularly, however it is possible that actual results could differ significantly from the recorded liabilities.
Asset Retirement Obligations	Asset Retirement Obligations Periodically, the Company will conclude a site no longer has an indeterminate life based on long-lived asset impairment triggering events and decisions made by the Company. Accordingly, the Company will record asset retirement obligations associated with such sites. To measure the fair value of the asset retirement obligations, the Company will use the expected present value technique, which is classified as a Level 3 fair value measurement. The expected present value technique uses a set of cash flows that represent the probability-weighted average of all possible cash flows based on the Company's judgment. The Company uses the following inputs to determine the fair value of the asset retirement obligations based on the Company's experience with fulfilling obligations of this type and the Company's knowledge of market conditions: (a) labor costs; (b) allocation of overhead costs; (c) profit on labor and overhead costs; (d) effect of inflation on estimated costs and profits; (e) risk premium for bearing the uncertainty inherent in cash flows, other than inflation; (f) time value of money represented by the risk-free interest rate commensurate with the timing of the associated cash flows; and (g) nonperformance risk relating to the liability, which includes the Company's own credit risk. The asset retirement obligations are accreted to their undiscounted values until the time at which they are expected to be settled. The Company has identified but not recognized asset retirement obligations related to certain of its existing operating facilities. Examples of these types of obligations include demolition, decommissioning, disposal and restoration activities. Legal obligations exist in connection with the retirement of these assets upon closure of the facilities or abandonment of the existing operations. However, the Company currently plans on continuing operations at these facilities indefinitely and therefore, a reasonable estimate of fair value cannot be determined at this time. In the event the Company considers plans to abandon or cease operations at these sites, an asset retirement obligation will be reassessed at that time. If certain operating facilities were to close, the related asset retirement obligations could significantly affect the Company's results of operations and cash flows.
Environmental liabilities	Environmental Liabilities The Company manufactures and sells a diverse line of chemical products throughout the world. Accordingly, the Company's operations are subject to various hazards incidental to the production of industrial chemicals including the use, handling, processing, storage and transportation of hazardous materials. The Company recognizes losses and accrues liabilities relating to environmental matters if available information indicates that it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Depending on the nature of the site, the Company accrues through 15 years , unless the Company has government orders or other agreements that extend beyond 15 years . The Company estimates environmental liabilities on a case-by-case basis using the most current status of available facts, existing technology, presently enacted laws and regulations and prior experience in remediation of contaminated sites. Recoveries of environmental costs from other parties are recorded as assets when their receipt is deemed probable. An environmental reserve related to cleanup of a contaminated site might include, for example, a provision for one or more of the following types of costs: site investigation and testing costs, cleanup costs, costs related to soil and water contamination resulting from tank ruptures and post-remediation monitoring costs. These undiscounted reserves do not take into account any claims or recoveries from insurance. The measurement of environmental liabilities is based on the Company's periodic estimate of what it will cost to perform each of the elements of the remediation effort. The Company utilizes third parties to assist in the management and development of cost estimates for its sites. Changes to environmental regulations or other factors affecting environmental liabilities are reflected in the consolidated financial statements in the period in which they occur.
Deferred Financing Costs	Deferred Financing Costs Deferred financing costs are amortized using a method that approximates the effective interest rate method over the term of the related debt into Interest expense in the consolidated statements of operations. Upon the extinguishment of the related debt, any unamortized deferred financing costs are immediately expensed and included in Refinancing expense in the consolidated statements of operations. Upon the modification of the related debt, a portion of unamortized deferred financing costs may be immediately expensed and included in Refinancing expense in the consolidated statements of operations. Direct costs of refinancing activities are immediately expensed and included in Refinancing expense in the consolidated statements of operations.
Pension and other postretirement obligations	Pension and Other Postretirement Obligations The Company recognizes a balance sheet asset or liability for each of its pension and other postretirement benefit plans equal to the plan's funded status as of a December 31 measurement date. The amounts recognized in the consolidated financial statements related to pension and other postretirement benefits are determined on an actuarial basis. 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, actuarial consultants use factors such as withdrawal and mortality rates to estimate the projected benefit obligation. The Company applies the long-term expected rate of return to the fair value of plan assets and immediately recognizes in operating results 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 pension and other postretirement plan net periodic benefit costs are recorded on a quarterly basis. The Company allocates the service cost and amortization of prior service cost (or credit) components of its pension and postretirement plans to its business segments. Interest cost, expected return on assets and net actuarial gains and losses are considered financing activities managed at the corporate level and are recorded to Other Activities. The Company believes the expense allocation appropriately matches the cost incurred for active employees to the respective business segment. 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. • Discount Rate As of the measurement date, the Company determines the appropriate discount rate used to calculate 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. In the US, the rate used to discount pension and other postretirement benefit plan liabilities is based on a yield curve developed from market data of over 300 Aa-grade non-callable bonds at the measurement date. This yield curve has discount rates that vary based on the duration of the obligations. The estimated future cash flows for the pension and other benefit obligations were matched to the corresponding rates on the yield curve to derive a weighted average discount rate. The Company determines its discount rates in the Euro zone using the iBoxx Euro Corporate AA Bond indices with appropriate adjustments for the duration of the plan obligations. In other international locations, the Company determines its discount rates based on the yields of high quality government bonds with a duration appropriate to the duration of the plan obligations. • Change in estimate regarding pension and other postretirement benefits Beginning in 2016, the Company elected to change the method used to estimate the service and interest cost components of net periodic benefit cost for its significant defined benefit pension plans and other postretirement benefit plans. Previously, the Company estimated the service and interest cost components utilizing a single weighted average discount rate derived from the yield curve used to measure the benefit obligation at the beginning of the period. The Company has elected to use a full yield curve approach in the estimation of these components of net periodic benefit cost by applying the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flows. This change improves the correlation between projected benefit cash flows and the corresponding yield curve spot rates and provides a more precise measurement of service and interest costs. This change does not affect the measurement of the Company's total benefit obligations as the change in service and interest cost will be completely offset in the annual actuarial (gain) loss reported. The Company has accounted for this change as a change in estimate and, accordingly, has accounted for it prospectively beginning in 2016. • Expected Long-Term Rate of Return on Assets The Company determines 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. The expected rate of return is assessed annually and is based on long-term relationships among major asset classes and the level of incremental returns that can be earned by the successful implementation of different active investment management strategies. Equity returns are based on estimates of long-term inflation rate, real rate of return, 10-year Treasury bond premium over cash and historical equity risk premium. Fixed income returns are based on maturity, historical long-term inflation, real rate of return and credit spreads. • Investment Policies and Strategies The investment objectives for the Company's pension plans are to earn, over a moving twenty-year period, a long-term expected rate of return, net of investment fees and transaction costs, sufficient to satisfy the benefit obligations of the plan, while at the same time maintaining adequate liquidity to pay benefit obligations and proper expenses, and meet any other cash needs, in the short- to medium-term. The equity and debt securities objectives are to provide diversified exposure across the US and global equity markets and to manage the risks and returns of the plans through the use of multiple managers and strategies. The fixed income strategy is designed to reduce liability-related interest rate risk by investing in bonds that match the duration and credit quality of the plan liabilities. Derivatives-based strategies may be used to mitigate investment risks. The financial objectives of the qualified pension plans are established in conjunction with a comprehensive review of each plan's liability structure. The Company's asset allocation policy is based on detailed asset/liability analysis. In developing investment policy and financial goals, consideration is given to each plan's demographics, the returns and risks associated with current and alternative investment strategies and the current and projected cash, expense and funding ratios of each plan. Investment policies must also comply with local statutory requirements as determined by each country. A formal asset/liability study of each plan is undertaken every three to five years or whenever there has been a material change in plan demographics, benefit structure or funding status and investment market. The Company has adopted a long-term investment horizon such that the risk and duration of investment losses are weighed against the long-term potential for appreciation of assets. Although there cannot be complete assurance that these objectives will be realized, it is believed that the likelihood for their realization is reasonably high, based upon the asset allocation chosen and the historical and expected performance of the asset classes utilized by the plans. The intent is for investments to be broadly diversified across asset classes, investment styles, market sectors, investment managers, developed and emerging markets and securities in order to moderate portfolio volatility and risk. Investments may be in separate accounts, commingled trusts, mutual funds and other pooled asset portfolios provided they all conform to fiduciary standards. External investment managers are hired to manage pension assets. Investment consultants assist with the screening process for each new manager hired. Over the long-term, the investment portfolio is expected to earn returns that exceed a composite of market indices that are weighted to match each plan's target asset allocation. The portfolio return should also (over the long-term) meet or exceed the return used for actuarial calculations in order to meet the future needs of each plan.
Commitments and contingencies	Commitments and Contingencies Due to the inherent subjectivity of assessments and unpredictability of outcomes of legal proceedings, the Company's litigation accruals and estimates of possible loss or range of possible loss ("Possible Loss") may not represent the ultimate loss to the Company from legal proceedings. For reasonably possible loss contingencies that may be material, the Company estimates its Possible Loss when determinable, considering that the Company could incur no loss in certain matters. 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 it is for the Company to estimate the Possible Loss that 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. 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.
Revenue recognition	Revenue Recognition The Company recognizes revenue when title and risk of loss have been transferred to the customer, generally at the time of shipment of products, and provided that four basic criteria are met: (a) persuasive evidence of an arrangement exists; (b) delivery has occurred or services have been rendered; (c) the fee is fixed or determinable; and (d) collectibility is reasonably assured. Shipping and handling fees billed to customers in a sales transaction are recorded in Net sales and shipping and handling costs incurred are recorded in Cost of sales.
Research and development	Research and Development The costs of research and development are charged as an expense in the period in which they are incurred.
Management compensation plans	Management Compensation Plans Share-based compensation expense is measured at the grant date, based on the fair value of the award, and is recognized over the participant's requisite service period. Upon termination of a participant's employment with the Company by reason of death or disability, retirement or by the Company without cause (as defined in the respective award agreements), a prorated award will generally vest on the original vesting date. The prorated award is calculated based on the time lapsed between the grant date and the date of termination, reduced by awards previously vested. Upon the termination of a Participant's employment with the Company for any other reason, any unvested portion of the award shall be forfeited and canceled without consideration. • Restricted Stock Units ("RSUs") Performance-based RSUs. The Company generally grants performance-based RSUs to the Company's executive officers and certain employees annually in February. The Company may also grant performance-based RSUs to certain new employees or to employees who assume positions of increasing responsibility at the time those events occur. The fair value of the Company's performance-based RSUs with a performance condition is equal to the average of the high and low price of the Company's Series A common stock, par value $0.0001 per share ("Common Stock"), on the grant date less the present value of the expected dividends not received during the vesting period. Outstanding performance-based RSUs granted prior to 2016 generally vest in two equal tranches with the final tranche vesting three years from the grant date. Outstanding performance-based RSUs granted in 2016 and thereafter generally cliff-vest three years from the date of grant. Compensation expense for performance-based RSUs less estimated forfeitures is recognized over the vesting period of the respective grant based on the accelerated attribution method. The number of performance-based RSUs that ultimately vest is dependent on one or both of the following according to the terms of the specific award agreement: the achievement of (a) internal profitability targets (performance condition) and (b) market performance targets measured by the comparison of the Company's stock performance versus a defined peer group (market condition). Based on the achievement of internal profitability targets, the ultimate number of shares of the Company's Common Stock issued will range from zero to stretch , with stretch defined individually under each award, net of shares used to cover minimum statutory personal income taxes withheld. Performance-based RSUs are canceled to the extent actual results do not meet minimum internal profitability measures, as defined individually under each award. Time-based RSUs. The Company grants non-employee Directors time-based RSUs annually that generally vest one year from the grant date. The Company also grants time-based RSUs to the Company's executives and certain employees that generally vest ratably over three years . The fair value of the time-based RSUs is equal to the average of the high and low price of the Company's Common Stock on the grant date less the present value of the expected dividends not received during the vesting period. Compensation expense for time-based RSUs less estimated forfeitures is recognized over the vesting period of the respective grant on a straight-line basis. The Company's RSUs are net settled by withholding shares of the Company's Common Stock to cover minimum statutory income taxes and remitting the remaining shares of the Company's Common Stock to an individual brokerage account. Authorized shares of the Company's Common Stock are used to settle RSUs. Under the 2009 Global Incentive Plan ("2009 GIP"), the Company may not grant RSUs with the right to participate in dividends or dividend equivalents.
Income taxes	Income Taxes The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes and net operating loss and tax credit carryforwards. The amount of deferred taxes on these temporary differences is determined using the tax rates that are expected to apply to the period when the asset is realized or the liability is settled, as applicable, based on tax rates and laws in the respective tax jurisdiction enacted as of the balance sheet date. The Company reviews its deferred tax assets for recoverability and establishes a valuation allowance based on historical taxable income, projected future taxable income, applicable tax strategies and the expected timing of the reversals of existing temporary differences. A valuation allowance is provided when it is more likely than not (likelihood of greater than 50%) that some portion or all of the deferred tax assets will not be realized. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately anticipate actual outcomes. Tax positions are recognized only when it is more likely than not (likelihood of greater than 50%), based on technical merits, that the positions will be sustained upon examination. Tax positions that meet the more-likely-than-not threshold are measured using a probability weighted approach as the largest amount of tax benefit that is greater than 50% likely of being realized upon settlement. Whether the more-likely-than-not recognition threshold is met for a tax position is a matter of judgment based on the individual facts and circumstances of that position evaluated in light of all available evidence. The Company recognizes interest and penalties related to uncertain tax positions in Income tax (provision) benefit in the consolidated statements of operations.
Functional and reporting currencies	Functional and Reporting Currencies For the Company's international operations where the functional currency is other than the US dollar, assets and liabilities are translated using period-end exchange rates, while the statement of operations amounts are translated using the average exchange rates for the respective period. Differences arising from the translation of assets and liabilities in comparison with the translation of the previous periods or from initial recognition during the period are included as a separate component of Accumulated other comprehensive income (loss), net.

Summary of Accounting Policie38

Summary of Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives of Depreciable Assets [Table Text Block]	Depreciation is calculated on a straight-line basis over the following estimated useful lives of depreciable assets: Land improvements 20 years Buildings and improvements 30 years Machinery and equipment 20 years Leasehold improvements are amortized over 10 years or the remaining life of the respective lease, whichever is shorter.

Acquisitions, Dispositions an39

Acquisitions, Dispositions and Plant Closures Schedule of Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2016
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The preliminary purchase price allocation for the SOFTER acquisition is as follows: As of December 1, 2016 (In $ millions) Cash and cash equivalents 11 Trade receivables - third party and affiliates 53 Inventories 58 Property, plant and equipment, net 68 Intangible assets ( Note 11 ) 79 Goodwill ( Note 11 ) (1) 106 Other assets (2) 33 Total fair value of assets acquired 408 Trade payables - third party and affiliates (41 ) Total debt ( Note 14 ) (103 ) Deferred income taxes (30 ) Other liabilities (45 ) Total fair value of liabilities assumed (219 ) Net assets acquired 189 ______________________________ (1) Goodwill consists of expected revenue and operating synergies resulting from the acquisition. None of the goodwill is deductible for income tax purposes. (2) Includes a $23 million indemnity receivable for uncertain tax positions related to the acquisition.

Ventures and Variable Interes40

Ventures and Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2016
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	The carrying amount of the assets and liabilities associated with Fairway included in the consolidated balance sheets are as follows: As of December 31, 2016 2015 (In $ millions) Cash and cash equivalents 18 7 Trade receivables, net - third party & affiliates 8 12 Property, plant and equipment (net of accumulated depreciation - 2016: $50; 2015: $10) 734 772 Intangible assets (net of accumulated amortization - 2016: $1; 2015: $0) 26 27 Other assets 9 13 Total assets (1) 795 831 Trade payables 15 9 Other liabilities (2) 2 5 Total debt 5 5 Deferred income taxes 2 2 Total liabilities 24 21 ______________________________ (1) Assets can only be used to settle the obligations of Fairway. (2) Primarily represents amounts owed by Fairway to the Company for reimbursement of expenditures.
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	The carrying amount of the assets and liabilities associated with the obligations to nonconsolidated VIEs, as well as the maximum exposure to loss relating to these nonconsolidated VIEs are as follows: As of December 31, 2016 2015 (In $ millions) Property, plant and equipment, net 60 73 Trade payables 53 47 Current installments of long-term debt 10 10 Long-term debt 91 109 Total liabilities 154 166 Maximum exposure to loss 240 268

Marketable Securities, at Fai41

Marketable Securities, at Fair Value (Tables)	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation	The Company's nonqualified trusts hold available-for-sale securities for funding requirements of the Company's nonqualified pension plans ( Note 15 ) as follows: As of December 31, 2016 2015 (In $ millions) Amortized cost 30 30 Gross unrealized gain — — Gross unrealized loss — — Fair value 30 30

Receivables, Net Receivables, N

Receivables, Net Receivables, Net (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Schedule of Trade Receivables - Third Party and Affiliates, Net	As of December 31, 2016 2015 (In $ millions) Trade receivables - third party and affiliates 807 712 Allowance for doubtful accounts - third party and affiliates (6 ) (6 ) Trade receivables - third party and affiliates, net 801 706
Schedule of Non-trade Receivables, Net	As of December 31, 2016 2015 (In $ millions) Non-income taxes receivable 83 121 Reinsurance receivables 16 18 Income taxes receivable 43 79 Other 81 67 Non-trade receivables, net 223 285

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2016
Inventory Disclosure [Abstract]
Schedule of Inventories	As of December 31, 2016 2015 (In $ millions) Finished goods 506 498 Work-in-process 45 43 Raw materials and supplies 169 141 Total 720 682

Investments in Affiliates (Tabl

Investments in Affiliates (Tables)	12 Months Ended
	Dec. 31, 2016
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Schedule of Equity Method Investments	Equity method investments and ownership interests by business segment are as follows: Ownership December 31, Carrying December 31, Share of December 31, Dividends and December 31, 2016 2015 2016 2015 2016 2015 2014 2016 2015 2014 (In percentages) (In $ millions) Advanced Engineered Materials Ibn Sina 25 25 113 87 38 88 115 (18 ) (98 ) (85 ) Fortron Industries LLC 50 50 100 100 9 11 9 (9 ) (8 ) (7 ) Korea Engineering Plastics Co., Ltd. 50 50 137 127 25 16 10 (11 ) (10 ) (16 ) Polyplastics Co., Ltd. 45 45 156 168 50 35 27 (54 ) (20 ) (3 ) Other Activities (1) InfraServ GmbH & Co. Gendorf KG 39 39 38 37 7 7 9 (5 ) (5 ) (7 ) InfraServ GmbH & Co. Hoechst KG (2) 32 32 132 147 22 21 72 (30 ) (32 ) (26 ) InfraServ GmbH & Co. Knapsack KG 27 27 18 18 4 4 4 (4 ) (3 ) (4 ) Consumer Specialties Sherbrooke Capital Health and Wellness, L.P. (3) 10 10 3 3 — (1 ) — — — — Total 697 687 155 181 246 (131 ) (176 ) (148 ) ______________________________ (1) InfraServ real estate service companies ("InfraServ Entities") own and operate sites in Frankfurt am Main-Hoechst, Gendorf and Knapsack, Germany. The InfraServ Entities were created to own land and property and to provide various technical and administrative services at these manufacturing locations. (2) InfraServ GmbH & Co. Hoechst KG is owned primarily by an entity included in the Company's Other Activities. The Company's Consumer Specialties segment and Acetyl Intermediates segment also each hold an ownership percentage. During the three months ended June 30, 2014, InfraServ GmbH & Co. Hoechst KG restructured the debt of a subsidiary resulting in additional equity in net earnings of affiliates of $48 million . (3) The Company accounts for its ownership interest in Sherbrooke Capital Health and Wellness, L.P. under the equity method of accounting because the Company is able to exercise significant influence.
Schedule of Cost Method Investments	Cost method investments and ownership interests by business segment are as follows: Ownership December 31, Carrying December 31, Dividend December 31, 2016 2015 2016 2015 2016 2015 2014 (In percentages) (In $ millions) Consumer Specialties Kunming Cellulose Fibers Co. Ltd. 30 30 14 14 14 14 15 Nantong Cellulose Fibers Co. Ltd. 31 31 106 106 80 79 87 Zhuhai Cellulose Fibers Co. Ltd. 30 30 30 22 13 13 13 Other Activities InfraServ GmbH & Co. Wiesbaden KG 8 8 5 5 1 1 1 Other — 4 — — — Total 155 151 108 107 116
Schedule of Transactions with Affiliates	Transactions and balances with affiliates are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Purchases 203 195 231 Sales 2 — —
Schedule of Balances with Affiliates	As of December 31, 2016 2015 (In $ millions) Non-trade receivables 26 23 Total due from affiliates 26 23 Short-term borrowings (1) 17 16 Trade payables 45 34 Current Other liabilities 8 6 Total due to affiliates 70 56 ______________________________ (1) The Company has agreements with certain affiliates whereby excess affiliate cash is lent to and managed by the Company at variable interest rates governed by those agreements.

Property, Plant and Equipment45

Property, Plant and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment, Net [Abstract]
Schedule of Property, Plant and Equipment, Net	As of December 31, 2016 2015 (In $ millions) Land 38 39 Land improvements 70 60 Buildings and building improvements 695 679 Machinery and equipment 4,753 4,609 Construction in progress 260 261 Gross asset value 5,816 5,648 Accumulated depreciation (2,239 ) (2,039 ) Net book value 3,577 3,609
Schedule of Assets Under Capital Leases	Assets under capital leases, net, included in the amounts above are as follows: As of December 31, 2016 2015 (In $ millions) Buildings 13 13 Machinery and equipment 291 289 Accumulated depreciation (149 ) (138 ) Net book value 155 164
Schedule of Capitalized Interest and Depreciation Expense	Capitalized interest costs and depreciation expense are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Capitalized interest 5 15 16 Depreciation expense 281 346 272

Goodwill and Intangible Asset46

Goodwill and Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2014 295 240 41 173 749 Acquisitions ( Note 4 ) — — — — — Exchange rate changes (13 ) (10 ) (2 ) (19 ) (44 ) As of December 31, 2015 282 230 39 154 705 Acquisitions ( Note 4 ) 106 — — — 106 Exchange rate changes (3 ) (5 ) (1 ) (6 ) (15 ) As of December 31, 2016 (1) 385 225 38 148 796 ______________________________ (1) There were $0 million of accumulated impairment losses as of December 31, 2016 .
Schedule of Finite-Lived Intangible Assets, Net	Finite-lived intangible assets 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, 2014 32 495 33 49 609 Acquisitions ( Note 5 ) 7 — 2 1 10 (1) Exchange rate changes (1 ) (39 ) — — (40 ) As of December 31, 2015 38 456 35 50 579 Acquisitions ( Note 4 ) — 64 — 3 67 (2) Exchange rate changes (2 ) (11 ) — — (13 ) As of December 31, 2016 36 509 35 53 633 Accumulated Amortization As of December 31, 2014 (23 ) (483 ) (23 ) (27 ) (556 ) Amortization (3 ) (4 ) (2 ) (2 ) (11 ) Exchange rate changes 1 38 — — 39 As of December 31, 2015 (25 ) (449 ) (25 ) (29 ) (528 ) Amortization (3 ) (2 ) (2 ) (2 ) (9 ) Exchange rate changes 1 11 1 — 13 As of December 31, 2016 (27 ) (440 ) (26 ) (31 ) (524 ) Net book value 9 69 9 22 109 ______________________________ (1) Primarily related to intangible assets acquired by Fairway ( Note 5 ) during the year ended December 31, 2015, with a weighted average amortization period of 16 years . (2) Primarily related to intangible assets acquired from SOFTER ( Note 4 ) during the year ended December 31, 2016, with a weighted average amortization period of 12 years .
Schedule of Indefinite-Lived Intangible Assets, Net	Indefinite-lived intangible assets are as follows: Trademarks and Trade Names (In $ millions) As of December 31, 2014 79 Acquisitions ( Note 4 ) — Impairment loss ( Note 2 ) — Exchange rate changes (5 ) As of December 31, 2015 74 Acquisitions ( Note 4 ) 12 Impairment loss ( Note 2 ) — Exchange rate changes (1 ) As of December 31, 2016 85
Schedule of Estimated Amortization Expense	Estimated amortization expense for the succeeding five fiscal years is as follows: (In $ millions) 2017 14 2018 12 2019 10 2020 8 2021 8

Current Other Liabilities (Tabl

Current Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Other Liabilities, Current [Abstract]
Schedule of Current Other Liabilities	As of December 31, 2016 2015 (In $ millions) Asset retirement obligations 9 10 Benefit obligations ( Note 15 ) 31 31 Customer rebates 51 45 Derivatives ( Note 22 ) 3 2 Environmental ( Note 16 ) 14 11 Insurance 6 10 Interest 15 16 Restructuring ( Note 18 ) 16 30 Salaries and benefits 97 109 Sales and use tax/foreign withholding tax payable 21 13 Other 59 53 Total 322 330

Noncurrent Other Liabilities (T

Noncurrent Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Other Liabilities, Noncurrent [Abstract]
Schedule of Noncurrent Other Liabilities	As of December 31, 2016 2015 (In $ millions) Asset retirement obligations 20 26 Deferred proceeds 41 43 Deferred revenue 9 13 Environmental ( Note 16 ) 50 61 Income taxes payable 6 7 Insurance 46 50 Other 43 47 Total 215 247
Schedule of Changes in Asset Retirement Obligations	Changes in asset retirement obligations are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Balance at beginning of year 36 37 47 Additions (1) 2 — 4 Accretion 1 1 1 Payments (10 ) (4 ) (8 ) Revisions to cash flow estimates (2) — 2 (7 ) Exchange rate changes — — — Balance at end of year 29 36 37 ______________________________ (1) Primarily relates to sites which management no longer considers to have an indeterminate life. (2) Primarily relates to revisions to the estimated cost and timing of future obligations.

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Line of Credit Facility [Line Items]
Schedule of Short-term Debt	As of December 31, 2016 2015 (In $ millions) Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates Current installments of long-term debt 27 56 Short-term borrowings, including amounts due to affiliates (1) 68 52 Short-term SOFTER bank loans ( Note 4 ) (2) 23 — Revolving credit facility (3) — 350 Accounts receivable securitization facility (4) — 55 Total 118 513 ______________________________ (1) The weighted average interest rate was 3.1% and 3.3% as of December 31, 2016 and 2015 , respectively. (2) The weighted average interest rate was 1.2% as of December 31, 2016 . (3) The weighted average interest rate was 1.8% as of December 31, 2015 . (4) The weighted average interest rate was 0.8% as of December 31, 2015 .
Schedule of Long-term Debt	As of December 31, 2016 2015 (In $ millions) Long-Term Debt Senior credit facilities - Term C-2 loan due 2016 (1) — 30 Senior credit facilities - Term C-3 loan due 2018 (2) — 878 Senior unsecured term loan due 2021 (3) 500 — Senior unsecured notes due 2019, interest rate of 3.250% 316 327 Senior unsecured notes due 2021, interest rate of 5.875% 400 400 Senior unsecured notes due 2022, interest rate of 4.625% 500 500 Senior unsecured notes due 2023, interest rate of 1.125% 788 — Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 5.70% to 6.70% — 169 Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 4.05% to 5.00% 170 — SOFTER bank loans due at various dates through 2021 ( Note 4 ) (4) 47 — Obligations under capital leases due at various dates through 2054 217 238 Subtotal 2,938 2,542 Unamortized debt issuance costs (5) (21 ) (18 ) Current installments of long-term debt (27 ) (56 ) Total 2,890 2,468 ______________________________ (1) The margin for borrowings under the Term C-2 loan facility was 2.0% above the Euro Interbank Offered Rate ("EURIBOR"). (2) The margin for borrowings under the Term C-3 loan facility was 2.25% above LIBOR (for US dollars) and 2.25% above EURIBOR (for Euros), as applicable. (3) The margin for borrowings under the senior unsecured term loan due 2021 was 1.5% above LIBOR at current Celanese credit ratings. (4) The weighted average interest rate was 1.6% as of December 31, 2016 . (5) Related to the Company's long-term debt, excluding obligations under capital leases.
Schedule of Net Deferred Financing Costs	Net deferred financing costs are as follows: (In $ millions) As of December 31, 2013 27 Financing costs deferred (1) 10 Accelerated amortization due to refinancing activity (2) (5 ) Amortization (5 ) As of December 31, 2014 (3) 27 Financing costs deferred — Accelerated amortization due to refinancing activity — Amortization (5 ) As of December 31, 2015 (3) 22 Financing costs deferred (4) 13 Accelerated amortization due to refinancing activity (5) (3 ) Amortization (5 ) As of December 31, 2016 (3) 27 ____________________________ (1) Includes $6 million related to the issuance of the 3.250% Notes and $4 million related to the September 2014 amendment to the Celanese US existing senior secured credit facilities. (2) Includes $4 million related to the 6.625% Notes redemption and $1 million related to the Term C-2 loan facility conversion. (3) Includes $6 million , $4 million and $5 million as of December 31, 2016, 2015 and 2014, respectively, related to the Company's revolving credit facility and accounts receivables securitization facility, which are included in noncurrent Other assets in the consolidated balance sheets. (4) Includes $5 million , $6 million and $2 million related to the New Credit Agreement, the 1.125% Notes and the pollution control and industrial revenue bonds, respectively, all of which are being amortized through the term of the respective financing arrangement. (5) Includes $2 million and $1 million related to the senior secured credit facilities and the pollution control and industrial revenue bonds, respectively, which are included in Refinancing expense in the consolidated statement of operations during the year ended December 31, 2016 .
Schedule of Principle Payments	Principal payments scheduled to be made on the Company's debt, including short-term borrowings, are as follows: (In $ millions) 2017 118 2018 62 2019 407 2020 87 2021 804 Thereafter 1,551 Total 3,029
Accounts Receivable Securitization Facility [Member]
Line of Credit Facility [Line Items]
Schedule of Balances Available for Borrowing	The Company's debt balances and amounts available for borrowing under its securitization facility are as follows: As of December 31, 2016 (In $ millions) Accounts Receivables Securitization Facility Borrowings outstanding (1) — Letters of credit issued 52 Available for borrowing 52 Total borrowing base 104 Maximum borrowing base (2) 120 ______________________________ (1) The Company repaid $55 million during the year ended December 31, 2016 . (2) Outstanding accounts receivable transferred to the SPE was $148 million .
Senior Unsecured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Schedule of Balances Available for Borrowing	The Company's debt balances and amounts available for borrowing under its senior unsecured revolving credit facility are as follows: As of December 31, 2016 (In $ millions) Revolving Credit Facility Borrowings outstanding (1) — Letters of credit issued — Available for borrowing (2) 1,000 ______________________________ (1) The Company borrowed $409 million and repaid $411 million under its new senior unsecured revolving credit facility during the year ended December 31, 2016 . The Company borrowed $245 million and repaid $595 million under its previous secured revolving credit facility during the year ended December 31, 2016 . (2) The margin for borrowings under the senior unsecured revolving credit facility was 1.5% above LIBOR at current Company credit ratings.

Benefit Obligations (Tables)

Benefit Obligations (Tables)	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Schedule of Contributions to Multiemployer Defined Benefit Pension Plans	Contributions made by the Company to the German multiemployer plan are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Multiemployer defined benefit plan 7 6 8
Schedule of Postemployment Obligations	Postemployment obligations are as follows: As of December 31, 2016 2015 (In $ millions) Postemployment benefits 9 11
Schedule of Contributions to Defined Contribution Plans	The amount of costs recognized for the Company's defined contribution plans are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Defined contribution plans 43 44 40
Schedule of Company's Pension and Post Retirement Benefit Plans	Summarized information on the Company's pension and postretirement benefit plans is as follows: Pension Benefits Postretirement Benefits 2016 2015 2016 2015 (In $ millions) Change in Projected Benefit Obligation Projected benefit obligation as of beginning of period 3,635 3,915 66 85 Service cost 8 12 — 1 Interest cost 113 139 2 3 Participant contributions — — — 1 Plan amendments — — — (6 ) Net actuarial (gain) loss (1) 102 (141 ) 3 (8 ) Settlements (1 ) — — — Benefits paid (232 ) (234 ) (4 ) (5 ) Federal subsidy on Medicare Part D — — — — Curtailments — (1 ) — — Special termination benefits 3 2 — — Exchange rate changes (18 ) (65 ) — (5 ) Other — 8 — — Projected benefit obligation as of end of period 3,610 3,635 67 66 Change in Plan Assets Fair value of plan assets as of beginning of period 2,508 2,789 — — Actual return on plan assets 177 (67 ) — — Employer contributions 346 59 4 4 Participant contributions — — — 1 Settlements (1 ) — — — Benefits paid (2) (232 ) (234 ) (4 ) (5 ) Exchange rate changes (14 ) (39 ) — — Fair value of plan assets as of end of period 2,784 2,508 — — Funded status as of end of period (826 ) (1,127 ) (67 ) (66 ) Amounts Recognized in the Consolidated Balance Sheets Consist of: Noncurrent Other assets 22 16 — — Current Other liabilities (25 ) (25 ) (5 ) (4 ) Benefit obligations (823 ) (1,118 ) (62 ) (62 ) Net amount recognized (826 ) (1,127 ) (67 ) (66 ) Amounts Recognized in Accumulated Other Comprehensive Income Consist of: Net actuarial (gain) loss (3) 18 16 — — Prior service (benefit) cost (1 ) (1 ) (1 ) (4 ) Net amount recognized (4) 17 15 (1 ) (4 ) ______________________________ (1) Primarily relates to change in discount rates. (2) Includes benefit payments to nonqualified pension plans of $22 million and $22 million as of December 31, 2016 and 2015 , respectively. (3) Relates to the pension plans of the Company's equity method investments. (4) Amount shown net of an income tax benefit of $4 million and $3 million as of December 31, 2016 and 2015 , respectively, in the consolidated statements of equity ( Note 17 ).
Schedule of Percentage of US and International Projected Benefit Obligation	The percentage of US and international projected benefit obligation at the end of the period is as follows: Pension Benefits Postretirement Benefits 2016 2015 2016 2015 (In percentages) US plans 85 86 57 61 International plans 15 14 43 39 Total 100 100 100 100
Schedule of Percentage of US and International Fair Value of Plan Assets	The percentage of US and international fair value of plan assets at the end of the period is as follows: Pension Benefits 2016 2015 (In percentages) US plans 88 87 International plans 12 13 Total 100 100
Schedule of Pension Plans with Projected Benefit Obligations in Excess of Plan Assets	Pension plans with projected benefit obligations in excess of plan assets are as follows: As of December 31, 2016 2015 (In $ millions) Projected benefit obligation 3,559 3,588 Fair value of plan assets 2,711 2,445
Schedule of Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets	Included in the above table are pension plans with accumulated benefit obligations in excess of plan assets as follows: As of December 31, 2016 2015 (In $ millions) Accumulated benefit obligation 3,538 3,570 Fair value of plan assets 2,708 2,442
Schedule of Accumulated Benefit Obligation for All Defined Benefit Pension Plans	The accumulated benefit obligation for all defined benefit pension plans is as follows: As of December 31, 2016 2015 (In $ millions) Accumulated benefit obligation 3,591 3,619
Schedule of Net Periodic Benefit Costs	The components of net periodic benefit cost are as follows: Pension Benefits Postretirement Benefits 2016 2015 2014 2016 2015 2014 (In $ millions) Service cost 8 12 11 — 1 1 Interest cost 113 139 168 2 3 4 Expected return on plan assets (177 ) (209 ) (214 ) — — — Amortization of prior service cost / (credit) — — — (3 ) — (83 ) Recognized actuarial (gain) loss 101 (1) 134 (2) 339 (3) 2 (7 ) 11 Curtailment (gain) loss — (3 ) — — — — Settlement (gain) loss — — (78 ) — — — Special termination benefit 3 2 — — — — Total 48 75 226 1 (3 ) (67 ) ______________________________ (1) Includes a gain of $48 million reflecting the incorporation of the RP-2016 mortality tables into the actuarial assumptions for the US pension plans. (2) Includes a gain of $62 million reflecting the incorporation of the RP-2015 mortality tables into the actuarial assumptions for the US pension plans. (3) Includes a loss of $53 million reflecting the incorporation of the RP-2014 mortality tables into the actuarial assumptions for the US pension plans.
Schedule of Amortization of Accumulated Other Comprehensive Income (Loss), Net Into Net Periodic Benefit Cost	Amortization of Accumulated other comprehensive income (loss), net into net periodic benefit cost in 2017 is expected to be as follows: Pension Benefits Postretirement Benefits (In $ millions) Prior service cost — (2 )
Schedule of Nonqualified Pension Plans Funded with Nonqualified Trusts	The Company maintains nonqualified pension plans funded with nonqualified trusts for certain US employees as follows: As of December 31, 2016 2015 (In $ millions) Nonqualified Trust Assets Marketable securities, at fair value 30 30 Noncurrent Other assets, consisting of insurance contracts 49 55 Nonqualified Pension Obligations Current Other liabilities 22 22 Benefit obligations 241 246
Schedule of Expense Related to Nonqualified Pension Plans Included in Net Periodic Benefit Cost, Excluding Returns on Assets	Expense relating to the nonqualified pension plans included in net periodic benefit cost, excluding returns on the assets held by the nonqualified trusts, is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 18 — (1) 43 ______________________________ (1) Actuarial gain offset interest cost.
Schedule of Principle Weighted Average Assumptions Used to Determine Benefit Obligations and Benefit Cost	The principal weighted average assumptions used to determine benefit obligation are as follows: Pension Benefits Postretirement Benefits 2016 2015 2016 2015 (In percentages) Discount Rate Obligations US plans 3.9 4.2 3.8 4.0 International plans 2.1 2.6 3.3 3.6 Combined 3.7 4.0 3.4 3.7 Rate of Compensation Increase US plans N/A N/A International plans 2.8 2.7 Combined 2.8 2.7 The principal weighted average assumptions used to determine net periodic benefit cost are as follows: Pension Benefits Postretirement Benefits 2016 2015 2014 2016 2015 2014 (In percentages) Discount Rate Obligations US plans 4.2 3.9 4.7 4.0 3.7 4.3 International plans 2.6 2.4 3.7 3.6 3.5 4.5 Combined 4.0 3.7 4.6 3.9 3.6 4.4 Discount Rate Service Cost (1) US plans 4.5 3.9 4.7 4.2 3.7 4.3 International plans 3.1 2.4 3.7 3.8 3.5 4.5 Combined 3.1 3.7 4.6 3.8 3.6 4.4 Discount Rate Interest Cost (1) US plans 3.4 3.9 4.7 3.1 3.7 4.3 International plans 2.2 2.4 3.7 3.1 3.5 4.5 Combined 3.2 3.7 4.6 3.1 3.6 4.4 Expected Return on Plan Assets US plans 7.5 8.0 8.5 International plans 6.1 6.0 6.2 Combined 7.3 7.8 8.2 Rate of Compensation Increase US plans N/A N/A 3.0 International plans 2.7 2.8 2.8 Combined 2.7 2.8 3.0 ______________________________ (1) Weighted-average discount rates in 2016 reflect the adoption of the full yield curve approach.
Schedule of Health Care Cost Trend Rates	The Company's health care cost trend assumptions for US postretirement medical plan's net periodic benefit cost are as follows: As of December 31, 2016 2015 2014 (In percentages, except year) Health care cost trend rate assumed for next year 9.5 10.0 7.0 Health care cost trend ultimate rate 5.0 5.0 5.0 Health care cost trend ultimate rate year 2026 2026 2020
Schedule of Impact of One-Percentage-Point Change in Assumed Health Care Cost Trend	The impact of a one percentage point change in the assumed health care cost trend is as follows: Trend Rate Change Decreases 1% Increases 1% (In $ millions) Postretirement obligations 2 2 Service and interest cost — —
Schedule of Weighted Average Target Asset Allocations	The weighted average target asset allocations for the Company's pension plans in 2016 are as follows: US Plans International Plans (In percentages) Bonds - domestic to plans 54 58 Equities - domestic to plans 26 16 Equities - international to plans 20 — Other — 26 Total 100 100
Schedule of Fair Values of Pension Plan Assets	Fair Value Measurement Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Total As of December 31, 2016 2015 2016 2015 2016 2015 (In $ millions) Assets Cash and cash equivalents 2 4 — — 2 4 Derivatives Swaps — — 2 25 2 25 Other — — — — — — Equity securities US companies 260 241 — — 260 241 International companies 345 327 — — 345 327 Fixed income Corporate debt — — 798 692 798 692 Treasuries, other debt 37 25 793 742 830 767 Mortgage backed securities — — 7 5 7 5 Insurance contracts — — 31 32 31 32 Other 24 18 — — 24 18 Total investments, at fair value (1) 668 615 1,631 1,496 2,299 2,111 Liabilities Derivatives Swaps — — 2 25 2 25 Other — — 1 — 1 — Total liabilities — — 3 25 3 25 Total net assets (2) 668 615 1,628 1,471 2,296 2,086 ______________________________ (1) In accordance with ASU 2015-07 ( Note 2 ), certain investments that are measured at fair value using the NAV per share practical expedient have not been classified in the fair value hierarchy. Total investments, at fair value, for the year ended December 31, 2016 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $195 million , $134 million and $149 million , respectively. Total investments, at fair value, for the year ended December 31, 2015 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $251 million , $117 million and $43 million , respectively. (2) Total net assets excludes non-financial plan receivables and payables of $20 million and $10 million , respectively, as of December 31, 2016 and $25 million and $14 million , respectively, as of December 31, 2015 . Non-financial items include due to/from broker, interest receivables and accrued expenses.
Schedule of Company Commitments to Fund Benefit Obligations	Benefit obligation funding is as follows: Total Expected 2017 (In $ millions) Cash contributions to defined benefit pension plans 20 Benefit payments to nonqualified pension plans 22 Benefit payments to other postretirement benefit plans 4
Schedule of Pension Benefits Expected to be Paid from the Plans or From the Company's Assets	Pension and postretirement benefits expected to be paid are as follows: Pension Benefit Payments (1) Company Portion of Postretirement Benefit Cost (2) (In $ millions) 2017 233 5 2018 231 5 2019 229 4 2020 228 4 2021 225 4 2022-2026 1,093 19 ______________________________ (1) Payments are expected to be made primarily from plan assets. (2) Payments are expected to be made primarily from Company assets.

Environmental (Tables)

Environmental (Tables)	12 Months Ended
	Dec. 31, 2016
Environmental Remediation Obligations [Abstract]
Schedule of Environmental Remediation Reserves	The components of environmental remediation reserves are as follows: As of December 31, 2016 2015 (In $ millions) Demerger obligations ( Note 24 ) 18 22 Divestiture obligations ( Note 24 ) 16 17 Active sites 16 18 US Superfund sites 11 13 Other environmental remediation reserves 3 2 Total 64 72
Schedule of Environmental Ownership and Liability Percentages	The Company's ownership interest and environmental liability participation percentages for such liabilities, which cannot be attributed to an InfraServ partner are as follows: As of December 31, 2016 Ownership Liability Reserves (1) (In percentages) (In $ millions) InfraServ GmbH & Co. Gendorf KG 39 10 10 InfraServ GmbH & Co. Hoechst KG 32 40 62 InfraServ GmbH & Co. Knapsack KG 27 22 1 ______________________________ (1) Gross reserves maintained by the respective InfraServ entity.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2016
Stockholders' Equity Note [Abstract]
Schedule of Dividend Increases	The Company's Board of Directors approved increases in the Company's Common Stock cash dividend rates as follows: Increase Quarterly Common Stock Cash Dividend Annual Common Stock Cash Dividend Effective Date (In percentages) (In $ per share) April 2014 39 0.25 1.00 May 2014 April 2015 20 0.30 1.20 May 2015 April 2016 20 0.36 1.44 May 2016
Schedule of Treasury Stock	These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. This repurchase program does not have an expiration date. The share repurchase activity pursuant to this authorization is as follows: Year Ended December 31, Total From 2016 2015 2014 Shares repurchased 7,034,420 6,640,601 (1) 4,338,488 34,342,216 Average purchase price per share $ 71.08 $ 63.31 $ 57.61 $ 53.44 Amount spent on repurchased shares (in millions) $ 500 $ 420 $ 250 $ 1,835 Aggregate Board of Directors repurchase authorizations during the period (in millions) (2) $ — $ 1,000 $ 473 $ 2,366 ______________________________ (1) The year ended December 31, 2015 excludes 9,264 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares. (2) These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. This repurchase program began in February 2008 and does not have an expiration date.
Schedule of Components of Other Comprehensive Income (Loss), Net	Year Ended December 31, 2016 2015 2014 Gross Amount Income Tax (Provision) Benefit Net Amount Gross Amount Income Tax (Provision) Benefit Net Amount Gross Amount Income Tax (Provision) Benefit Net Amount (In $ millions) Unrealized gain (loss) on marketable securities — — — — — — — 1 1 Foreign currency translation (22 ) 11 (11 ) (193 ) 5 (188 ) (188 ) 40 (148 ) Gain (loss) on cash flow hedges 5 — 5 3 (1 ) 2 — 40 40 Pension and postretirement benefits (5 ) 1 (4 ) 4 (1 ) 3 (84 ) 30 (54 ) Total (22 ) 12 (10 ) (186 ) 3 (183 ) (272 ) 111 (161 )
Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss), Net	Adjustments to Accumulated other comprehensive income (loss), net, are as follows: Unrealized Gain (Loss) on Marketable Securities ( Note 6 ) Foreign Currency Translation Gain (Loss) from Cash Flow Hedges ( Note 22 ) Pension and Postretirement Benefits ( Note 15 ) Accumulated Other Comprehensive Income (Loss), Net (In $ millions) As of December 31, 2013 — (3 ) (44 ) 43 (4 ) Other comprehensive income (loss) before reclassifications — (188 ) (9 ) (1 ) (198 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 9 (83 ) (74 ) Income tax (provision) benefit 1 40 40 30 111 As of December 31, 2014 1 (151 ) (4 ) (11 ) (165 ) Other comprehensive income (loss) before reclassifications — (193 ) (2 ) 6 (189 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 5 (2 ) 3 Income tax (provision) benefit — 5 (1 ) (1 ) 3 As of December 31, 2015 1 (339 ) (2 ) (8 ) (348 ) Other comprehensive income (loss) before reclassifications — (22 ) 7 (3 ) (18 ) Amounts reclassified from accumulated other comprehensive income (loss) — — (2 ) (2 ) (4 ) Income tax (provision) benefit — 11 — 1 12 As of December 31, 2016 1 (350 ) 3 (12 ) (358 )

Other (Charges) Gains, Net (Tab

Other (Charges) Gains, Net (Tables)	12 Months Ended
	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Schedule of Other (Charges) Gains, Net	Year Ended December 31, 2016 2015 2014 (In $ millions) Employee termination benefits ( Note 4 ) (1) (11 ) (53 ) (7 ) Asset impairments (2 ) (126 ) — Other plant/office closures — — 2 Singapore contract termination — (174 ) — Commercial disputes 2 2 11 Other — — 9 Total (11 ) (351 ) 15 ______________________________ (1) Includes $3 million and $1 million of special termination benefits included in Benefit obligations in the consolidated balance sheet as of December 31, 2016 and 2015 , respectively.
Schedule of Restructuring Reserve	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, 2014 4 1 1 5 3 14 Additions 7 25 9 2 9 52 Cash payments (4 ) (12 ) (4 ) (5 ) (3 ) (28 ) Other changes (3 ) — — — (3 ) (6 ) Exchange rate changes (1 ) — — (1 ) — (2 ) As of December 31, 2015 3 14 6 1 6 30 Additions 2 2 2 1 3 10 Cash payments (3 ) (6 ) (6 ) (1 ) (5 ) (21 ) Other changes (1 ) — — — (1 ) (2 ) Exchange rate changes — (1 ) — — — (1 ) As of December 31, 2016 1 9 2 1 3 16 Other Plant/Office Closures As of December 31, 2014 — — — 7 — 7 Additions — — — — — — Cash payments — — — (6 ) — (6 ) Other changes — — — — — — Exchange rate changes — — — (1 ) — (1 ) As of December 31, 2015 — — — — — — Additions — — — — — — Cash payments — — — — — — Other changes — — — — — — Exchange rate changes — — — — — — As of December 31, 2016 — — — — — — Total 1 9 2 1 3 16

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Schedule of Earnings (Loss) from Continuing Operations Before Tax by Jurisdiction	Earnings (loss) from continuing operations before tax by jurisdiction are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) US 326 231 534 International (1) 704 257 407 Total 1,030 488 941 ______________________________ (1) Includes aggregate earnings generated by operations in Bermuda, Luxembourg, the Netherlands and Hong Kong of $621 million , $330 million and $308 million for the years ended December 31, 2016 , 2015 and 2014 , respectively, which have an aggregate effective income tax rate of 1.9% , 6.1% and 4.8% for each year, respectively.
Schedule of Income Tax Provision (Benefit)	The income tax provision (benefit) consists of the following: Year Ended December 31, 2016 2015 2014 (In $ millions) Current US (22 ) 28 108 International 60 152 56 Total 38 180 164 Deferred US 108 54 156 International (24 ) (33 ) (6 ) Total 84 21 150 Total 122 201 314
Schedule of Effective Tax Rate Reconciliation	A reconciliation of the significant differences between the US federal statutory tax rate of 35% and the effective income tax rate on income from continuing operations is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions, except percentages) Income tax provision computed at US federal statutory tax rate 361 171 329 Change in valuation allowance (18 ) 124 49 Equity income and dividends (60 ) (33 ) (50 ) (Income) expense not resulting in tax impact, net (152 ) (32 ) (34 ) US tax effect of foreign earnings and dividends 302 15 49 Foreign tax credits (293 ) (4 ) (34 ) Other foreign tax rate differentials (44 ) (41 ) (33 ) Tax-deductible interest on foreign equity investments and other related items — — 12 State income taxes, net of federal benefit 8 6 9 Other, net 18 (5 ) 17 Income tax provision (benefit) 122 201 314 Effective income tax rate 12 % 41 % 33 %
Schedule of Consolidated Deferred Tax Assets and Liabilities	Significant components of the consolidated deferred tax assets and liabilities are as follows: As of December 31, 2016 2015 (In $ millions) Deferred Tax Assets Pension and postretirement obligations 313 434 Accrued expenses 61 40 Inventory 11 14 Net operating loss 661 683 Tax credit carryforwards 136 88 Other 161 202 Subtotal 1,343 1,461 Valuation allowance (1) (386 ) (448 ) Total 957 1,013 Deferred Tax Liabilities (2) Depreciation and amortization 366 380 Investments in affiliates 475 395 Other 87 114 Total 928 889 Net deferred tax assets (liabilities) 29 124 ______________________________ (1) Includes deferred tax asset valuation allowances for the Company's deferred tax assets in the US, Luxembourg, Spain, China, Singapore, the United Kingdom, Canada and France . These valuation allowances relate primarily to net operating loss carryforward benefits and other net deferred tax assets, all of which may not be realizable. (2) Includes deferred tax liabilities from the acquisition of SOFTER ( Note 4 ).
Schedule of Activity Related to Uncertain Tax Positions	Activity related to uncertain tax positions is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) As of the beginning of the year 158 228 244 Increases in tax positions for the current year 9 13 7 Increases in tax positions for prior years (1) 11 76 24 Decreases in tax positions for prior years (9 ) (126 ) (46 ) Decreases due to settlements (55 ) (33 ) (1 ) As of the end of the year 114 158 228 Total uncertain tax positions that if recognized would impact the effective tax rate 87 144 245 Total amount of interest expense (benefit) and penalties recognized in the consolidated statements of operations (2) (16 ) (12 ) 2 Total amount of interest expense and penalties recognized in the consolidated balance sheets 26 43 67 ______________________________ (1) Includes uncertain tax positions related to the SOFTER acquisition ( Note 4 ) of $19 million for the year ended December 31, 2016. (2) This amount reflects interest on uncertain tax positions and release of certain tax positions as a result of audit closure that was reflected in the consolidated statements of operations. In addition, for the years ended December 31, 2016 and 2015, the Company also paid an additional $1 million and $12 million , respectively, of previously accrued amounts due to settlements of tax examinations.

Management Compensation Plans (

Management Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Total Shares Available for and Subject to Awards	Total shares available for awards and total shares subject to outstanding awards are as follows: As of December 31, 2016 Shares Available for Awards Shares Subject to Outstanding Awards 2009 GIP 5,429,360 1,798,343 2004 Stock Incentive Plan — 12,500 (1) ______________________________ (1) No RSUs remain outstanding under the 2004 Stock Incentive Plan.
Schedule of Realized Income Tax Benefits from Stock Option Exercises and RSU Vestings	The Company realized income tax benefits from stock option exercises and RSU vestings as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Income tax benefit realized 7 2 2 Amount reversed in current year related to prior year — — —
Schedule of Summary of Changes in Stock Options Outstanding	The summary of changes in stock options outstanding is as follows: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In $) (In years) (In $ millions) As of December 31, 2015 249 35.19 2.4 9 Granted — — Exercised (195 ) 33.08 Forfeited — — Expired — — As of December 31, 2016 (1) 54 42.77 2.0 2 ______________________________ (1) All stock options outstanding as of December 31, 2016 were vested and exercisable.
Schedule of Intrinsic Value of Stock Options Exercises	The total intrinsic value of stock options exercised is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Intrinsic value 7 4 7
Schedule of Summary of Changes in Performance-based RSUs Outstanding	A summary of changes in nonvested performance-based RSUs outstanding is as follows: Number of Units Weighted Average Grant Date Fair Value (In thousands) (In $) As of December 31, 2015 1,231 50.24 Granted 446 56.24 Additional performance-based RSUs granted (1) 483 48.03 Vested (966 ) 48.03 Canceled — — Forfeited (109 ) 53.55 As of December 31, 2016 1,085 53.36 ______________________________ (1) Represents additional performance-based RSU grants in 2013 and 2014 that were awarded in 2016 as a result of achieving internal profitability targets.
Schedule of Summary of Changes in Time-based RSUs Outstanding	A summary of changes in nonvested time-based RSUs outstanding is as follows: Employee Time-Based RSUs Director Time-Based RSUs Number of Units Weighted Average Grant Date Fair Value Number of Units Weighted Average Grant Date Fair Value (In thousands) (In $) (In thousands) (In $) As of December 31, 2015 105 60.78 14 64.94 Granted 291 67.82 15 69.76 Vested (42 ) 59.13 (15 ) 65.03 Forfeited (24 ) 59.28 — — As of December 31, 2016 330 67.32 14 69.88
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Fair Value of Shares Vested	The fair value of shares vested for performance-based RSUs is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 64 27 —
Time Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Fair Value of Shares Vested	The fair value of shares vested for time-based RSUs is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 4 6 9

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Schedule of Future Minimum Lease Payments for Capital Leases	Future minimum lease payments under non-cancelable rental and lease agreements, which have initial or remaining terms in excess of one year are as follows: As of December 31, 2016 Capital Leases (In $ millions) 2017 46 2018 44 2019 45 2020 44 2021 44 Later years 146 Sublease income — Minimum lease commitments 369 Less amounts representing interest (152 ) Present value of net minimum lease obligations 217
Schedule of Future Minimum Rental Payments for Operating Leases	As of December 31, 2016 Operating Leases (In $ millions) 2017 57 2018 53 2019 48 2020 42 2021 29 Later years 166 Sublease income — Minimum lease commitments 395
Schedule of Rent Expense	Rent expense recorded under all operating leases is as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Total 154 154 161

Derivative Financial Instrume57

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative [Line Items]
Schedule of Notional Amounts of Net Foreign Exchange Exposure by Currency	The total US dollar equivalents of net foreign exchange exposure related to (short) long foreign exchange forward contracts outstanding by currency are as follows: 2017 Maturity (In $ millions) Currency Brazilian real (19 ) British pound sterling (78 ) Canadian dollar 33 Chinese renminbi (41 ) Euro 138 Hungarian forint 9 Indonesian rupiah (6 ) Korean won 10 Singapore dollar 30 Total 76
Schedule of Derivatives Instruments Activity	Hedging activity for interest rate swaps, cross-currency swaps and commodity swaps is as follows: Year Ended December 31, Statement of Operations Classification 2016 2015 2014 (In $ millions) Hedging activities 2 2 (4 ) Cost of sales; Interest income (expense) Ineffective portion of hedging activities — — — Other income (expense), net
Schedule of Changes in Fair Value of Derivatives	Information regarding changes in the fair value of the Company's derivative and non-derivative instruments is as follows: Gain (Loss) Recognized in Other Comprehensive Income (Loss) Gain (Loss) Recognized in Earnings (Loss) Statement of Operations Classification Year Ended December 31, Year Ended December 31, 2016 2015 2014 2016 2015 2014 (In $ millions) Designated as Cash Flow Hedges Commodity swaps 7 — — 2 — — Cost of sales Interest rate swaps — — (1 ) — — (4 ) Interest expense Cross-currency swaps — — (8 ) — 46 46 Other income (expense), net or Interest expense Total 7 — (9 ) 2 46 42 Designated as a Net Investment Hedge Foreign currency denominated debt ( Note 14 ) 61 48 23 — — — N/A Total 61 48 23 — — — Not Designated as Hedges Interest rate swaps — — — — (1 ) (3 ) Interest expense Foreign currency forwards and swaps — — — 14 (82 ) (15 ) Foreign exchange gain (loss), net; Other income (expense), net Total — — — 14 (83 ) (18 )
Offsetting Assets	Information regarding the gross amounts of the Company's derivative instruments and the amounts offset in the consolidated balance sheets is as follows: As of December 31, 2016 2015 (In $ millions) Derivative Assets Gross amount recognized 14 2 Gross amount offset in the consolidated balance sheets 4 — Net amount presented in the consolidated balance sheets 10 2 Gross amount not offset in the consolidated balance sheets 2 — Net amount 8 2
Offsetting Liabilities	As of December 31, 2016 2015 (In $ millions) Derivative Liabilities Gross amount recognized 7 2 Gross amount offset in the consolidated balance sheets 4 — Net amount presented in the consolidated balance sheets 3 2 Gross amount not offset in the consolidated balance sheets 2 — Net amount 1 2
Foreign Exchange Forward [Member]
Derivative [Line Items]
Schedule of Notional Amounts of Foreign Currency Derivatives	Gross notional values of the foreign currency forwards and swaps are as follows: As of December 31, 2016 2015 (In $ millions) Total 508 502
Foreign Currency Denominated Debt [Member] | Net Investment Hedging [Member]
Derivative [Line Items]
Schedule of Notional Amounts of Foreign Currency Derivatives	The total notional amount of foreign currency denominated debt designated as a net investment hedge of net investments in foreign operations are as follows: As of December 31, 2016 2015 (In € millions) Total 850 328

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis	Fair Value Measurement Balance Sheet Classification Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Total As of December 31, 2016 2015 2016 2015 2016 2015 (In $ millions) Derivatives Designated as Cash Flow Hedges Commodity swaps — — 5 — 5 — Current Other assets Derivatives Not Designated as Hedges Foreign currency forwards and swaps — — 5 2 5 2 Current Other assets Total assets — — 10 2 10 2 Designated as a Net Investment Hedge Foreign currency denominated debt (1) — — — — — — Long-term Debt Derivatives Not Designated as Hedges Foreign currency forwards and swaps — — (3 ) (2 ) (3 ) (2 ) Current Other liabilities Total liabilities — — (3 ) (2 ) (3 ) (2 ) ______________________________ (1) Included in the consolidated balance sheets at carrying amount.
Schedule of Carrying Values and Fair Values of Financial Instruments	Carrying values and fair values of financial instruments that are not carried at fair value are as follows: Fair Value Measurement Carrying Amount Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) Total As of December 31, 2016 2015 2016 2015 2016 2015 2016 2015 (In $ millions) Cost investments 155 151 — — — — — — Insurance contracts in nonqualified trusts 49 55 49 55 — — 49 55 Long-term debt, including current installments of long-term debt 2,938 2,542 2,826 2,348 217 238 3,043 2,586

Supplemental Cash Flow Inform59

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2016
Supplemental Cash Flow Information [Abstract]
Schedule of Supplemental Cash Flow Information	Year Ended December 31, 2016 2015 2014 (In $ millions) Interest paid, net of amounts capitalized 130 120 146 Taxes paid, net of refunds 129 151 199 Noncash Investing and Financing Activities Accrued capital expenditures 1 (37 ) 3 Asset retirement obligations 2 3 4 Capital expenditure reimbursement — — 4 Capital lease obligations — 6 22 Contingent consideration ( Note 4 ) — — 8 Distribution to noncontrolling interest ( Note 5 ) — (4 ) — Mitsui reimbursement — — 70

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Schedule of Business Segments	Advanced Engineered Materials Consumer Specialties Industrial Specialties Acetyl Intermediates Other Activities Eliminations Consolidated (In $ millions) Year Ended December 31, 2016 Net sales 1,444 929 (1) 979 (2) 2,441 (3) — (404 ) 5,389 Other (charges) gains, net ( Note 18 ) (2 ) (2 ) (3 ) (3 ) (1 ) — (11 ) Operating profit (loss) 350 302 105 340 (205 ) 1 893 Equity in net earnings (loss) of affiliates 122 3 — 6 24 — 155 Depreciation and amortization 92 45 34 107 12 — 290 Capital expenditures 73 38 57 67 12 — 247 (4) As of December 31, 2016 Goodwill and intangible assets, net 517 244 46 183 — — 990 Total assets 2,792 1,324 758 2,440 1,043 — 8,357 Year Ended December 31, 2015 Net sales 1,326 969 (1) 1,082 (2) 2,744 (3) — (447 ) 5,674 Other (charges) gains, net ( Note 18 ) (7 ) (25 ) (10 ) (300 ) (9 ) — (351 ) Operating profit (loss) 235 262 72 (3 ) (240 ) — 326 Equity in net earnings (loss) of affiliates 150 2 — 6 23 — 181 Depreciation and amortization 99 60 64 123 11 — 357 Capital expenditures 73 65 56 282 7 — 483 (4) As of December 31, 2015 Goodwill and intangible assets, net 338 249 49 194 — — 830 Total assets 2,324 1,458 747 2,387 1,670 — 8,586 Year Ended December 31, 2014 Net sales 1,459 1,160 (1) 1,224 (2) 3,493 (3) — (534 ) 6,802 Other (charges) gains, net ( Note 18 ) (1 ) 16 (1 ) (3 ) 4 — 15 Operating profit (loss) 221 388 76 558 (485 ) — 758 Equity in net earnings (loss) of affiliates 161 9 — 20 56 — 246 Depreciation and amortization 106 43 50 81 12 — 292 Capital expenditures 65 103 29 478 6 — 681 (4) ______________________________ (1) Includes intersegment sales of $0 million , $0 million and $2 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. (2) Includes intersegment sales of $3 million , $0 million and $0 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. (3) Includes intersegment sales of $401 million , $447 million and $532 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. (4) Includes an increase in accrued capital expenditures of $1 million , a decrease of $37 million and an increase of $3 million for the years ended December 31, 2016 , 2015 and 2014 , respectively.
Schedule of Geographical Segments	The net sales based on the geographic location of the Company's facilities are as follows: Year Ended December 31, 2016 2015 2014 (In $ millions) Belgium 408 417 480 Canada 123 162 204 China 745 800 996 Germany 1,540 1,779 2,156 Mexico 214 204 259 Singapore 758 703 632 US 1,451 1,463 1,899 Other 150 146 176 Total 5,389 5,674 6,802 Property, plant and equipment, net based on the geographic location of the Company's facilities is as follows: As of December 31, 2016 2015 (In $ millions) Belgium 55 56 Canada 132 137 China 359 417 Germany 868 931 Mexico 159 156 Singapore 90 68 US 1,798 1,774 Other 116 70 Total 3,577 3,609

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Schedule of Earnings (Loss) Per Share	Year Ended December 31, 2016 2015 2014 (In $ millions, except share data) Amounts attributable to Celanese Corporation Earnings (loss) from continuing operations 902 306 631 Earnings (loss) from discontinued operations (2 ) (2 ) (7 ) Net earnings (loss) 900 304 624 Weighted average shares - basic 144,939,433 150,838,050 155,012,370 Incremental shares attributable to equity awards (1) 728,748 1,449,905 1,154,623 Weighted average shares - diluted 145,668,181 152,287,955 156,166,993 ______________________________ (1) Excludes 836 , 2,903 and 0 equity award shares for the years ended December 31, 2016 , 2015 and 2014 , respectively, as their effect would have been antidilutive.

Consolidating Guarantor Finan62

Consolidating Guarantor Financial Information (Tables)	12 Months Ended
	Dec. 31, 2016
Consolidating Guarantor Financial Information [Abstract]
Schedule of Consolidating Statements of Operations	CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF OPERATIONS Year Ended December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net sales — — 2,162 4,322 (1,095 ) 5,389 Cost of sales — — (1,657 ) (3,428 ) 1,101 (3,984 ) Gross profit — — 505 894 6 1,405 Selling, general and administrative expenses — — (112 ) (304 ) — (416 ) Amortization of intangible assets — — (5 ) (4 ) — (9 ) Research and development expenses — — (32 ) (46 ) — (78 ) Other (charges) gains, net — — — (11 ) — (11 ) Foreign exchange gain (loss), net — — — (1 ) — (1 ) Gain (loss) on disposition of businesses and assets, net — — (8 ) 17 (6 ) 3 Operating profit (loss) — — 348 545 — 893 Equity in net earnings (loss) of affiliates 898 939 653 146 (2,481 ) 155 Interest expense — (16 ) (94 ) (29 ) 19 (120 ) Refinancing expense — (4 ) (2 ) — — (6 ) Interest income — 12 4 5 (19 ) 2 Dividend income - cost investments — — — 107 1 108 Other income (expense), net — (1 ) 1 (2 ) — (2 ) Earnings (loss) from continuing operations before tax 898 930 910 772 (2,480 ) 1,030 Income tax (provision) benefit 2 (32 ) (53 ) (36 ) (3 ) (122 ) Earnings (loss) from continuing operations 900 898 857 736 (2,483 ) 908 Earnings (loss) from operation of discontinued operations — — (2 ) (1 ) — (3 ) Gain (loss) on disposition of discontinued operations — — — — — — Income tax (provision) benefit from discontinued operations — — — 1 — 1 Earnings (loss) from discontinued operations — — (2 ) — — (2 ) Net earnings (loss) 900 898 855 736 (2,483 ) 906 Net (earnings) loss attributable to noncontrolling interests — — — (6 ) — (6 ) Net earnings (loss) attributable to Celanese Corporation 900 898 855 730 (2,483 ) 900 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF OPERATIONS Year Ended December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net sales — — 2,410 4,485 (1,221 ) 5,674 Cost of sales — — (1,729 ) (3,897 ) 1,270 (4,356 ) Gross profit — — 681 588 49 1,318 Selling, general and administrative expenses — — (242 ) (264 ) — (506 ) Amortization of intangible assets — — (5 ) (6 ) — (11 ) Research and development expenses — — (78 ) (41 ) — (119 ) Other (charges) gains, net — — (5 ) (346 ) — (351 ) Foreign exchange gain (loss), net — — — 4 — 4 Gain (loss) on disposition of businesses and assets, net — — (6 ) (3 ) — (9 ) Operating profit (loss) — — 345 (68 ) 49 326 Equity in net earnings (loss) of affiliates 302 314 84 162 (681 ) 181 Interest expense — (77 ) (76 ) (36 ) 70 (119 ) Refinancing expense — — — — — — Interest income — 18 40 13 (70 ) 1 Dividend income - cost investments — — — 107 — 107 Other income (expense), net — (2 ) 2 (8 ) — (8 ) Earnings (loss) from continuing operations before tax 302 253 395 170 (632 ) 488 Income tax (provision) benefit 2 49 (133 ) (98 ) (21 ) (201 ) Earnings (loss) from continuing operations 304 302 262 72 (653 ) 287 Earnings (loss) from operation of discontinued operations — — (3 ) — — (3 ) Gain (loss) on disposition of discontinued operations — — — — — — Income tax (provision) benefit from discontinued operations — — 1 — — 1 Earnings (loss) from discontinued operations — — (2 ) — — (2 ) Net earnings (loss) 304 302 260 72 (653 ) 285 Net (earnings) loss attributable to noncontrolling interests — — — 19 — 19 Net earnings (loss) attributable to Celanese Corporation 304 302 260 91 (653 ) 304 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF OPERATIONS Year Ended December 31, 2014 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net sales — — 2,860 5,166 (1,224 ) 6,802 Cost of sales — — (1,822 ) (4,550 ) 1,186 (5,186 ) Gross profit — — 1,038 616 (38 ) 1,616 Selling, general and administrative expenses — — (313 ) (445 ) — (758 ) Amortization of intangible assets — — (7 ) (13 ) — (20 ) Research and development expenses — — (47 ) (39 ) — (86 ) Other (charges) gains, net — — 28 (13 ) — 15 Foreign exchange gain (loss), net — — — (2 ) — (2 ) Gain (loss) on disposition of businesses and assets, net — — (11 ) 4 — (7 ) Operating profit (loss) — — 688 108 (38 ) 758 Equity in net earnings (loss) of affiliates 622 806 90 210 (1,482 ) 246 Interest expense — (190 ) (22 ) (78 ) 143 (147 ) Refinancing expense — (29 ) — — — (29 ) Interest income — 57 72 15 (143 ) 1 Dividend income - cost investments — — — 116 — 116 Other income (expense), net — — 4 (8 ) — (4 ) Earnings (loss) from continuing operations before tax 622 644 832 363 (1,520 ) 941 Income tax (provision) benefit 2 (22 ) (237 ) (71 ) 14 (314 ) Earnings (loss) from continuing operations 624 622 595 292 (1,506 ) 627 Earnings (loss) from operation of discontinued operations — — (8 ) (3 ) — (11 ) Gain (loss) on disposition of discontinued operations — — — — — — Income tax (provision) benefit from discontinued operations — — 3 1 — 4 Earnings (loss) from discontinued operations — — (5 ) (2 ) — (7 ) Net earnings (loss) 624 622 590 290 (1,506 ) 620 Net (earnings) loss attributable to noncontrolling interests — — — 4 — 4 Net earnings (loss) attributable to Celanese Corporation 624 622 590 294 (1,506 ) 624
Schedule of Consolidating Statements of Comprehensive Income (Loss)	CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net earnings (loss) 900 898 855 736 (2,483 ) 906 Other comprehensive income (loss), net of tax Unrealized gain (loss) on marketable securities — — — — — — Foreign currency translation (11 ) (11 ) (65 ) (73 ) 149 (11 ) Gain (loss) from cash flow hedges 5 5 5 5 (15 ) 5 Pension and postretirement benefits (4 ) (4 ) (4 ) (2 ) 10 (4 ) Total other comprehensive income (loss), net of tax (10 ) (10 ) (64 ) (70 ) 144 (10 ) Total comprehensive income (loss), net of tax 890 888 791 666 (2,339 ) 896 Comprehensive (income) loss attributable to noncontrolling interests — — — (6 ) — (6 ) Comprehensive income (loss) attributable to Celanese Corporation 890 888 791 660 (2,339 ) 890 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net earnings (loss) 304 302 260 72 (653 ) 285 Other comprehensive income (loss), net of tax Unrealized gain (loss) on marketable securities — — — — — — Foreign currency translation (188 ) (188 ) (181 ) (231 ) 600 (188 ) Gain (loss) from cash flow hedges 2 2 5 1 (8 ) 2 Pension and postretirement benefits 3 3 3 2 (8 ) 3 Total other comprehensive income (loss), net of tax (183 ) (183 ) (173 ) (228 ) 584 (183 ) Total comprehensive income (loss), net of tax 121 119 87 (156 ) (69 ) 102 Comprehensive (income) loss attributable to noncontrolling interests — — — 19 — 19 Comprehensive income (loss) attributable to Celanese Corporation 121 119 87 (137 ) (69 ) 121 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2014 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net earnings (loss) 624 622 590 290 (1,506 ) 620 Other comprehensive income (loss), net of tax Unrealized gain (loss) on marketable securities 1 1 1 1 (3 ) 1 Foreign currency translation (148 ) (148 ) (31 ) (65 ) 244 (148 ) Gain (loss) from cash flow hedges 40 40 (1 ) (7 ) (32 ) 40 Pension and postretirement benefits (54 ) (54 ) (54 ) (5 ) 113 (54 ) Total other comprehensive income (loss), net of tax (161 ) (161 ) (85 ) (76 ) 322 (161 ) Total comprehensive income (loss), net of tax 463 461 505 214 (1,184 ) 459 Comprehensive (income) loss attributable to noncontrolling interests — — — 4 — 4 Comprehensive income (loss) attributable to Celanese Corporation 463 461 505 218 (1,184 ) 463
Schedule of Consolidating Balance Sheets	CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING BALANCE SHEET As of December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) ASSETS Current Assets Cash and cash equivalents — — 51 587 — 638 Trade receivables - third party and affiliates — — 107 819 (125 ) 801 Non-trade receivables, net 40 499 249 308 (873 ) 223 Inventories, net — — 239 526 (45 ) 720 Deferred income taxes — — — — — — Marketable securities, at fair value — — 30 — — 30 Other assets — 42 25 76 (83 ) 60 Total current assets 40 541 701 2,316 (1,126 ) 2,472 Investments in affiliates 2,548 4,029 3,655 752 (10,132 ) 852 Property, plant and equipment, net — — 1,049 2,528 — 3,577 Deferred income taxes — — 91 86 (18 ) 159 Other assets — 705 133 156 (687 ) 307 Goodwill — — 314 482 — 796 Intangible assets, net — — 48 146 — 194 Total assets 2,588 5,275 5,991 6,466 (11,963 ) 8,357 LIABILITIES AND EQUITY Current Liabilities Short-term borrowings and current installments of long-term debt - third party and affiliates — 6 133 250 (271 ) 118 Trade payables - third party and affiliates — — 226 524 (125 ) 625 Other liabilities — 58 167 262 (165 ) 322 Deferred income taxes — — — — — — Income taxes payable — — 454 75 (517 ) 12 Total current liabilities — 64 980 1,111 (1,078 ) 1,077 Noncurrent Liabilities Long-term debt, net of unamortized deferred financing costs — 2,647 727 210 (694 ) 2,890 Deferred income taxes — 16 — 132 (18 ) 130 Uncertain tax positions — — 3 130 (2 ) 131 Benefit obligations — — 636 257 — 893 Other liabilities — — 74 142 (1 ) 215 Total noncurrent liabilities — 2,663 1,440 871 (715 ) 4,259 Total Celanese Corporation stockholders' equity 2,588 2,548 3,571 4,051 (10,170 ) 2,588 Noncontrolling interests — — — 433 — 433 Total equity 2,588 2,548 3,571 4,484 (10,170 ) 3,021 Total liabilities and equity 2,588 5,275 5,991 6,466 (11,963 ) 8,357 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING BALANCE SHEET As of December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) ASSETS Current Assets Cash and cash equivalents — — 21 946 — 967 Trade receivables - third party and affiliates — — 132 722 (148 ) 706 Non-trade receivables, net 37 580 298 522 (1,152 ) 285 Inventories, net — — 258 474 (50 ) 682 Deferred income taxes — — 19 68 (19 ) 68 Marketable securities, at fair value — — 30 — — 30 Other assets — 12 28 40 (31 ) 49 Total current assets 37 592 786 2,772 (1,400 ) 2,787 Investments in affiliates 2,341 3,947 3,909 738 (10,097 ) 838 Property, plant and equipment, net — — 1,001 2,608 — 3,609 Deferred income taxes — 2 178 42 — 222 Other assets — 418 151 227 (496 ) 300 Goodwill — — 314 391 — 705 Intangible assets, net — — 51 74 — 125 Total assets 2,378 4,959 6,390 6,852 (11,993 ) 8,586 LIABILITIES AND EQUITY Current Liabilities Short-term borrowings and current installments of long-term debt - third party and affiliates — 479 181 213 (360 ) 513 Trade payables - third party and affiliates — — 240 495 (148 ) 587 Other liabilities — 28 281 283 (262 ) 330 Deferred income taxes — 26 — 23 (19 ) 30 Income taxes payable — — 537 116 (563 ) 90 Total current liabilities — 533 1,239 1,130 (1,352 ) 1,550 Noncurrent Liabilities Long-term debt, net of unamortized deferred financing costs — 2,078 706 187 (503 ) 2,468 Deferred income taxes — — — 136 — 136 Uncertain tax positions — 7 29 131 — 167 Benefit obligations — — 960 229 — 1,189 Other liabilities — — 93 155 (1 ) 247 Total noncurrent liabilities — 2,085 1,788 838 (504 ) 4,207 Total Celanese Corporation stockholders' equity 2,378 2,341 3,363 4,433 (10,137 ) 2,378 Noncontrolling interests — — — 451 — 451 Total equity 2,378 2,341 3,363 4,884 (10,137 ) 2,829 Total liabilities and equity 2,378 4,959 6,390 6,852 (11,993 ) 8,586
Schedule of Consolidating Cash Flow Statements	CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF CASH FLOWS Year Ended December 31, 2016 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net cash provided by (used in) operating activities 695 711 (21 ) 872 (1,364 ) 893 Investing Activities Capital expenditures on property, plant and equipment — — (139 ) (107 ) — (246 ) Acquisitions, net of cash acquired — — — (178 ) — (178 ) Proceeds from sale of businesses and assets, net — — 1 11 — 12 Capital expenditures related to Fairway Methanol LLC — — — — — — Return of capital from subsidiary — 145 758 — (903 ) — Contributions to subsidiary — — — — — — Intercompany loan receipts (disbursements) — (283 ) 19 90 174 — Other, net — — (10 ) (17 ) — (27 ) Net cash provided by (used in) investing activities — (138 ) 629 (201 ) (729 ) (439 ) Financing Activities Short-term borrowings (repayments), net — (371 ) 1 (1 ) 19 (352 ) Proceeds from short-term borrowings — — — 53 — 53 Repayments of short-term borrowings — — — (90 ) — (90 ) Proceeds from long-term debt — 1,589 746 — (826 ) 1,509 Repayments of long-term debt — (1,083 ) (635 ) (42 ) 633 (1,127 ) Purchases of treasury stock, including related fees (500 ) — — — — (500 ) Dividends to parent — (695 ) (669 ) — 1,364 — Contributions from parent — — — — — — Stock option exercises 6 — — — — 6 Series A common stock dividends (201 ) — — — — (201 ) Return of capital to parent — — — (903 ) 903 — (Distributions to) contributions from noncontrolling interests — — — (24 ) — (24 ) Other, net — (13 ) (21 ) 1 — (33 ) Net cash provided by (used in) financing activities (695 ) (573 ) (578 ) (1,006 ) 2,093 (759 ) Exchange rate effects on cash and cash equivalents — — — (24 ) — (24 ) Net increase (decrease) in cash and cash equivalents — — 30 (359 ) — (329 ) Cash and cash equivalents as of beginning of period — — 21 946 — 967 Cash and cash equivalents as of end of period — — 51 587 — 638 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF CASH FLOWS Year Ended December 31, 2015 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net cash provided by (used in) operating activities 591 536 529 422 (1,216 ) 862 Investing Activities Capital expenditures on property, plant and equipment — — (128 ) (104 ) — (232 ) Acquisitions, net of cash acquired — — (3 ) (3 ) — (6 ) Proceeds from sale of businesses and assets, net — — — 4 — 4 Capital expenditures related to Fairway Methanol LLC — — (20 ) (268 ) — (288 ) Return of capital from subsidiary — — — — — — Contributions to subsidiary — — (120 ) — 120 — Intercompany loan receipts (disbursements) — (333 ) (33 ) (15 ) 381 — Other, net — — (12 ) (24 ) — (36 ) Net cash provided by (used in) investing activities — (333 ) (316 ) (410 ) 501 (558 ) Financing Activities Short-term borrowings (repayments), net — 383 — — (33 ) 350 Proceeds from short-term borrowings — — — 80 — 80 Repayments of short-term borrowings — — — (83 ) — (83 ) Proceeds from long-term debt — 15 406 — (421 ) — Repayments of long-term debt — (9 ) (74 ) (14 ) 73 (24 ) Purchases of treasury stock, including related fees (420 ) — — — — (420 ) Dividends to parent — (592 ) (624 ) — 1,216 — Contributions from parent — — — 120 (120 ) — Stock option exercises 3 — — — — 3 Series A common stock dividends (174 ) — — — — (174 ) Return of capital to parent — — — — — — (Distributions to) contributions from noncontrolling interests — — — 214 — 214 Other, net — — (10 ) (2 ) — (12 ) Net cash provided by (used in) financing activities (591 ) (203 ) (302 ) 315 715 (66 ) Exchange rate effects on cash and cash equivalents — — — (51 ) — (51 ) Net increase (decrease) in cash and cash equivalents — — (89 ) 276 — 187 Cash and cash equivalents as of beginning of period — — 110 670 — 780 Cash and cash equivalents as of end of period — — 21 946 — 967 CELANESE CORPORATION AND SUBSIDIARIES CONSOLIDATING STATEMENT OF CASH FLOWS Year Ended December 31, 2014 Parent Guarantor Issuer Subsidiary Guarantors Non- Guarantors Eliminations Consolidated (In $ millions) Net cash provided by (used in) operating activities 389 498 644 433 (1,002 ) 962 Investing Activities Capital expenditures on property, plant and equipment — — (183 ) (71 ) — (254 ) Acquisitions, net of cash acquired — — (10 ) — — (10 ) Proceeds from sale of businesses and assets, net — — — — — — Capital expenditures related to Fairway Methanol LLC — — (44 ) (380 ) — (424 ) Return of capital from subsidiary — 28 51 — (79 ) — Contributions to subsidiary — — (213 ) — 213 — Intercompany loan receipts (disbursements) — (70 ) (93 ) (75 ) 238 — Other, net — — (9 ) (8 ) — (17 ) Net cash provided by (used in) investing activities — (42 ) (501 ) (534 ) 372 (705 ) Financing Activities Short-term borrowings (repayments), net — 93 6 (15 ) (93 ) (9 ) Proceeds from short-term borrowings — — — 62 — 62 Repayments of short-term borrowings — — — (91 ) — (91 ) Proceeds from long-term debt — 462 75 — (150 ) 387 Repayments of long-term debt — (611 ) (5 ) (15 ) 5 (626 ) Purchases of treasury stock, including related fees (250 ) — — — — (250 ) Dividends to parent — (390 ) (390 ) (222 ) 1,002 — Contributions from parent — — — 213 (213 ) — Stock option exercises 5 — — — — 5 Series A common stock dividends (144 ) — — — — (144 ) Return of capital to parent — — — (79 ) 79 — (Distributions to) contributions from noncontrolling interests — — — 264 — 264 Other, net — (10 ) (3 ) — — (13 ) Net cash provided by (used in) financing activities (389 ) (456 ) (317 ) 117 630 (415 ) Exchange rate effects on cash and cash equivalents — — — (46 ) — (46 ) Net increase (decrease) in cash and cash equivalents — — (174 ) (30 ) — (204 ) Cash and cash equivalents as of beginning of period — — 284 700 — 984 Cash and cash equivalents as of end of period — — 110 670 — 780

Description of the Company an63

Description of the Company and Basis of Presentation (Narrative) (Details)	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidated subsidiaries ownership percentage	100.00%

Summary of Accounting Policie64

Summary of Accounting Policies (Investments in Affiliates Narrative) (Details)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Subsidiary reporting period lag	one quarter

Summary of Accounting Policie65

Summary of Accounting Policies (Schedule of Estimated Useful Lives of Depreciable Assets) (Details)	12 Months Ended
	Dec. 31, 2016
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	20 years
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	30 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	20 years
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	10 years

Summary of Accounting Policie66

Summary of Accounting Policies (Goodwill and Other Intangible Assets Narrative) (Details)	12 Months Ended
	Dec. 31, 2016
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, estimated useful lives	3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, estimated useful lives	30 years

Summary of Accounting Policie67

Summary of Accounting Policies Summary of Accounting Policies (Derivative and Hedging Instruments) (Details) $ in Millions	Dec. 31, 2014USD ($)
Accounting Policies [Abstract]
Notional Value	$ 500

Summary of Accounting Policie68

Summary of Accounting Policies (Insurance Loss Reserves Narrative) (Details)	Dec. 31, 2016
Accounting Policies [Abstract]
Number of wholly-owned insurance companies	2

Summary of Accounting Policie69

Summary of Accounting Policies (Environmental Liabilities Narrative) (Details)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Environmental liabilities accrual period	15 years

Summary of Accounting Policie70

Summary of Accounting Policies (Pension and Other Postretirement Obligations) (Details)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Treasury bond duration	10-year
Number of Aa-grade non-callable bonds	300

Summary of Accounting Policie71

Summary of Accounting Policies Summary of Accounting Policies (Management Compensation Plans Narrative) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, par value	$ 0.0001
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Range of number of shares that will vest	zero to stretch
Director [Member] | RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Employee [Member] | RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Series A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, par value	$ 0.0001	$ 0.0001

Summary of Accounting Policie72

Summary of Accounting Policies (Income Taxes Narrative) (Details)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Valuation Allowance, Methodologies and Assumptions	A valuation allowance is provided when it is more likely than not (likelihood of greater than 50%) that some portion or all of the deferred tax assets will not be realized. Tax positions that meet the more-likely-than-not threshold are measured using a probability weighted approach as the largest amount of tax benefit that is greater than 50% likely of being realized upon settlement.

Accounting Pronouncements (Narr

Accounting Pronouncements (Narrative) (Details) - New Accounting Pronouncement, Early Adoption, Effect [Member] $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)
Current deferred income tax asset [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 68
Current deferred income tax liability [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 30

Acquisitions, Dispositions an74

Acquisitions, Dispositions and Plant Closures (Schedule of Business Acquisitions, by Acquisition) (Details) - USD ($)		Dec. 31, 2016	[1]	Dec. 01, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Business Acquisition, Goodwill, Expected Tax Deductible Amount				$ 0
Goodwill		$ 796,000,000			$ 705,000,000	$ 749,000,000
Advanced Engineered Materials [Member]
Business Acquisition [Line Items]
Goodwill		$ 385,000,000			$ 282,000,000	$ 295,000,000
SO.F.TER. S.p.A. [Member]
Business Acquisition [Line Items]
Cash and cash equivalents				11,000,000
Trade receivables - third party and affiliates				53,000,000
Inventories				58,000,000
Property, plant and equipment, net				68,000,000
Intangible assets (Note 11)				79,000,000
Goodwill	[2]			106,000,000
Other assets(2)	[3]			33,000,000
Total fair value of assets acquired				408,000,000
Trade payables - third party and affiliates				(41,000,000)
Total debt (Note 14)				(103,000,000)
Deferred income taxes				(30,000,000)
Other liabilities				(45,000,000)
Total fair value of liabilities assumed				(219,000,000)
Net assets acquired				189,000,000
Indemnity for uncertain tax positions [Member] | SO.F.TER. S.p.A. [Member]
Business Acquisition [Line Items]
Other assets(2)	[3]			$ 23,000,000
[1]	There were $0 million of accumulated impairment losses as of December 31, 2016.
[2]	Goodwill consists of expected revenue and operating synergies resulting from the acquisition. None of the goodwill is deductible for income tax purposes.
[3]	Includes a $23 million indemnity receivable for uncertain tax positions related to the acquisition.

Acquisitions, Dispositions an75

Acquisitions, Dispositions and Plant Closures Acquisition Narrative (Details) - SO.F.TER. S.p.A. [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 01, 2016
Business Acquisition [Line Items]
Business Combination, Net Earnings as a Percent of Acquierer's Net earnings		2.00%
Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs	$ 3
Advanced Engineered Materials [Member]
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		100.00%

Acquisitions, Dispositions an76

Acquisitions, Dispositions and Plant Closures (Plant Closure Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 01, 2015
Consumer Specialties [Member] | Lanaken, Belgium
Restructuring Cost and Reserve [Line Items]
Capacity Reduction Percentage	50.00%	50.00%
Research and Development Expense [Member] | Acetyl Intermediates [Member] | Clear Lake, TX [Member]
Restructuring Cost and Reserve [Line Items]
Other Depreciation and Amortization	$ 39

Ventures and Variable Interes77

Ventures and Variable Interest Entities (Schedule of Variable Interest Entities) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Variable Interest Entity [Line Items]
Cash and cash equivalents		$ 638	$ 967	$ 780	$ 984
Trade receivables - third party and affiliates		801	706
Property, plant and equipment (net of accumulated depreciation - 2016: $50; 2015: $10)		3,577	3,609
Accumulated depreciation		2,239	2,039
Intangible assets, net		194	125
Accumulated amortization		524	528	$ 556
Other assets		307	300
Total assets		8,357	8,586
Trade payables		625	587
Current liabilities		1,077	1,550
Deferred income taxes		130	136
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents		18	7
Trade receivables - third party and affiliates		4	6
Property, plant and equipment (net of accumulated depreciation - 2016: $50; 2015: $10)		734	772
Intangible assets, net		26	27
Other assets		9	13
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Property, plant and equipment (net of accumulated depreciation - 2016: $50; 2015: $10)		60	73
Trade payables		53	47
Current installments of long-term debt		10	10
Long-term debt		91	109
Total liabilities		154	166
Maximum exposure to loss		240	268
Fairway Methanol LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents		18	7
Trade receivables - third party and affiliates		8	12
Property, plant and equipment (net of accumulated depreciation - 2016: $50; 2015: $10)		734	772
Accumulated depreciation		50	10
Intangible assets, net		26	27
Accumulated amortization		1	0
Other assets		9	13
Total assets	[1]	795	831
Trade payables		15	9
Current liabilities	[2]	2	5
Long-term debt		5	5
Deferred income taxes		2	2
Total liabilities		$ 24	$ 21
[1]	Assets can only be used to settle the obligations of Fairway.
[2]	Primarily represents amounts owed by Fairway to the Company for reimbursement of expenditures.

Ventures and Variable Interes78

Ventures and Variable Interest Entities (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Ownership percentage	50.00%

Marketable Securities, at Fai79

Marketable Securities, at Fair Value (Schedule of Available-for-sale Securities) (Details) - Mutual Funds [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 30	$ 30
Gross unrealized gain	0	0
Gross unrealized loss	0	0
Fair value	$ 30	$ 30

Receivables, Net Receivables,80

Receivables, Net Receivables, Net (Schedule of Trade Receivables - Third Party and Affiliates, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Trade receivables - third party and affiliates	$ 807	$ 712
Allowance for doubtful accounts - third party and affiliates	(6)	(6)
Trade receivables - third party and affiliates, net	$ 801	$ 706

Receivables, Net Receivables,81

Receivables, Net Receivables, Net (Schedule of Non-trade Receivables, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Non-income taxes receivable	$ 83	$ 121
Reinsurance receivables	16	18
Income taxes receivable	43	79
Other	81	67
Non-trade receivables, net	$ 223	$ 285

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Finished goods	$ 506	$ 498
Work-in-process	45	43
Raw materials and supplies	169	141
Total	$ 720	$ 682

Investments in Affiliates (Sche

Investments in Affiliates (Schedule of Equity Method Investments) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Sep. 30, 2015	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Carrying value			$ 697		$ 687
Share of earnings (loss)			155		181		$ 246
Dividends and other distributions			$ (131)		$ (176)		(148)
National Methonal Company (Ibn Sina) [Member] | Advanced Engineered Materials [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			25.00%		25.00%
Carrying value			$ 113		$ 87
Share of earnings (loss)			38		88		115
Dividends and other distributions			$ (18)		$ (98)		(85)
Fortron Industries LLC [Member] | Advanced Engineered Materials [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			50.00%		50.00%
Carrying value			$ 100		$ 100
Share of earnings (loss)			9		11		9
Dividends and other distributions			$ (9)		$ (8)		(7)
Korea Engineering Plastics Co., Ltd. [Member] | Advanced Engineered Materials [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			50.00%		50.00%
Carrying value			$ 137		$ 127
Share of earnings (loss)			25		16		10
Dividends and other distributions			$ (11)		$ (10)		(16)
Polyplastics Co., Ltd. [Member] | Advanced Engineered Materials [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			45.00%		45.00%
Carrying value			$ 156		$ 168
Share of earnings (loss)			50		35		27
Dividends and other distributions			$ (54)		$ (20)		(3)
InfraServ GmbH & Co. Gendorf KG [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			39.00%
InfraServ GmbH & Co. Gendorf KG [Member] | Other Activities [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	[1]		39.00%		39.00%
Carrying value	[1]		$ 38		$ 37
Share of earnings (loss)	[1]		7		7		9
Dividends and other distributions	[1]		$ (5)		$ (5)		(7)
InfraServ GmbH & Co. Hoechst KG [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			32.00%
InfraServ GmbH & Co. Hoechst KG [Member] | Other Activities [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	[1],[2]		32.00%		32.00%
Carrying value	[1],[2]		$ 132		$ 147
Share of earnings (loss)		$ 48	$ 22	[1],[2]	21	[1],[2]	72	[1],[2]
Share of earnings (loss), additional information			InfraServ GmbH & Co. Hoechst KG is owned primarily by an entity included in the Company's Other Activities. The Company's Consumer Specialties segment and Acetyl Intermediates segment also each hold an ownership percentage. During the three months ended June 30, 2014, InfraServ GmbH & Co. Hoechst KG restructured the debt of a subsidiary resulting in additional equity in net earnings of affiliates of $48 million.
Dividends and other distributions	[1],[2]		$ (30)		$ (32)		(26)
InfraServ GmbH & Co. Knapsack KG [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			27.00%
InfraServ GmbH & Co. Knapsack KG [Member] | Other Activities [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	[1]		27.00%		27.00%
Carrying value	[1]		$ 18		$ 18
Share of earnings (loss)	[1]		4		4		4
Dividends and other distributions	[1]		$ (4)		$ (3)		(4)
Sherbrooke Capital Health and Wellness, L.P. [Member] | Consumer Specialties [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	[3]		10.00%		10.00%
Carrying value	[3]		$ 3		$ 3
Share of earnings (loss)	[3]		0		(1)		0
Dividends and other distributions	[3]		$ 0		$ 0		$ 0
[1]	InfraServ real estate service companies ("InfraServ Entities") own and operate sites in Frankfurt am Main-Hoechst, Gendorf and Knapsack, Germany. The InfraServ Entities were created to own land and property and to provide various technical and administrative services at these manufacturing locations.
[2]	InfraServ GmbH & Co. Hoechst KG is owned primarily by an entity included in the Company's Other Activities. The Company's Consumer Specialties segment and Acetyl Intermediates segment also each hold an ownership percentage. During the three months ended June 30, 2014, InfraServ GmbH & Co. Hoechst KG restructured the debt of a subsidiary resulting in additional equity in net earnings of affiliates of $48 million.
[3]	The Company accounts for its ownership interest in Sherbrooke Capital Health and Wellness, L.P. under the equity method of accounting because the Company is able to exercise significant influence.

Investments in Affiliates (Sc84

Investments in Affiliates (Schedule of Cost Method Investments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Cost-method Investments [Line Items]
Carrrying value	$ 155	$ 151
Dividend income	$ 108	$ 107	$ 116
Kunming Cellulose Fibers Co. Ltd. [Member] | Consumer Specialties [Member]
Schedule of Cost-method Investments [Line Items]
Ownership percentage	30.00%	30.00%
Carrrying value	$ 14	$ 14
Dividend income	$ 14	$ 14	15
Nantong Cellulose Fibers Co. Ltd. [Member] | Consumer Specialties [Member]
Schedule of Cost-method Investments [Line Items]
Ownership percentage	31.00%	31.00%
Carrrying value	$ 106	$ 106
Dividend income	$ 80	$ 79	87
Zhuhai Cellulose Fibers Co. Ltd. [Member] | Consumer Specialties [Member]
Schedule of Cost-method Investments [Line Items]
Ownership percentage	30.00%	30.00%
Carrrying value	$ 30	$ 22
Dividend income	$ 13	$ 13	13
InfraServ GmbH & Co. Wiesbaden KG [Member] | Other Activities [Member]
Schedule of Cost-method Investments [Line Items]
Ownership percentage	8.00%	8.00%
Carrrying value	$ 5	$ 5
Dividend income	1	1	1
Other Cost Method Investee [Member]
Schedule of Cost-method Investments [Line Items]
Carrrying value	0	4
Dividend income	$ 0	$ 0	$ 0

Investments in Affiliates (Sc85

Investments in Affiliates (Schedule of Transactions with Affiliates) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Purchases	$ 203	$ 195	$ 231
Sales	$ 2	$ 0	$ 0

Investments in Affiliates (Sc86

Investments in Affiliates (Schedule of Balances with Affiliates) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Non-trade receivables		$ 26	$ 23
Total due from affiliates		26	23
Short-term borrowings	[1]	17	16
Trade payables		45	34
Current Other liabilities		8	6
Total due to affiliates		$ 70	$ 56
[1]	The Company has agreements with certain affiliates whereby excess affiliate cash is lent to and managed by the Company at variable interest rates governed by those agreements.

Property, Plant and Equipment87

Property, Plant and Equipment, Net (Schedule of Property, Plant and Equipment, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Gross asset value	$ 5,816	$ 5,648
Accumulated depreciation	(2,239)	(2,039)
Net book value	3,577	3,609
Land [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	38	39
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	70	60
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	695	679
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	4,753	4,609
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	$ 260	$ 261

Property, Plant and Equipment88

Property, Plant and Equipment, Net (Schedule of Assets Under Capital Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Capital Leased Assets [Line Items]
Accumulated depreciation	$ (149)	$ (138)
Net book value	155	164
Buildings [Member]
Capital Leased Assets [Line Items]
Gross capital leased asset value	13	13
Machinery and Equipment [Member]
Capital Leased Assets [Line Items]
Gross capital leased asset value	$ 291	$ 289

Property, Plant and Equipment89

Property, Plant and Equipment, Net (Schedule of Capitalized Interest and Depreciation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment, Net [Abstract]
Capitalized interest	$ 5	$ 15	$ 16
Depreciation expense	$ 281	$ 346	$ 272

Goodwill and Intangible Asset90

Goodwill and Intangible Assets, Net (Schedule of Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Goodwill
Acquisitions (Note 4)	$ 106		$ 0
Exchange rate changes	(15)		(44)
Accumulated impairment losses	0
Net book value	796	[1]	705	$ 749
Advanced Engineered Materials [Member]
Goodwill
Acquisitions (Note 4)	106		0
Exchange rate changes	(3)		(13)
Net book value	385	[1]	282	295
Consumer Specialties [Member]
Goodwill
Acquisitions (Note 4)	0		0
Exchange rate changes	(5)		(10)
Net book value	225	[1]	230	240
Industrial Specialties [Member]
Goodwill
Acquisitions (Note 4)	0		0
Exchange rate changes	(1)		(2)
Net book value	38	[1]	39	41
Acetyl Intermediates [Member]
Goodwill
Acquisitions (Note 4)	0		0
Exchange rate changes	(6)		(19)
Net book value	$ 148	[1]	$ 154	$ 173
[1]	There were $0 million of accumulated impairment losses as of December 31, 2016.

Goodwill and Intangible Asset91

Goodwill and Intangible Assets, Net (Schedule of Finite-Lived Intangible Assets, Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Finite-Lived intangible Assets Rollforward
Acquisitions (Note 4)	$ 67	[1]	$ 10	[2]
Acquisitions (Note 5)	67	[1]	10	[2]
Exchange rate changes	(13)		(40)
Gross asset value	633		579		$ 609
Amortization	(9)		(11)		(20)
Exchange rate changes	13		39
Accumulated amortization	(524)		(528)		(556)
Net book value	109
Licenses [Member]
Finite-Lived intangible Assets Rollforward
Acquisitions (Note 4)	0		7
Acquisitions (Note 5)	0		7
Exchange rate changes	(2)		(1)
Gross asset value	36		38		32
Amortization	(3)		(3)
Exchange rate changes	1		1
Accumulated amortization	(27)		(25)		(23)
Net book value	9
Customer-Related Intangible Assets [Member]
Finite-Lived intangible Assets Rollforward
Acquisitions (Note 4)	64		0
Acquisitions (Note 5)	64		0
Exchange rate changes	(11)		(39)
Gross asset value	509		456		495
Amortization	(2)		(4)
Exchange rate changes	11		38
Accumulated amortization	(440)		(449)		(483)
Net book value	69
Developed Technology [Member]
Finite-Lived intangible Assets Rollforward
Acquisitions (Note 4)	0		2
Acquisitions (Note 5)	0		2
Exchange rate changes	0		0
Gross asset value	35		35		33
Amortization	(2)		(2)
Exchange rate changes	1		0
Accumulated amortization	(26)		(25)		(23)
Net book value	9
Covenants Not to Compete and Other [Member]
Finite-Lived intangible Assets Rollforward
Acquisitions (Note 4)	3		1
Acquisitions (Note 5)	3		1
Exchange rate changes	0		0
Gross asset value	53		50		49
Amortization	(2)		(2)
Exchange rate changes	0		0
Accumulated amortization	(31)		$ (29)		$ (27)
Net book value	$ 22
SO.F.TER. S.p.A. [Member]
Finite-Lived intangible Assets Rollforward
Weighted average life of intangible assets acquired	12 years
Fairway Methanol LLC [Member]
Finite-Lived intangible Assets Rollforward
Weighted average life of intangible assets acquired			16 years
[1]	Primarily related to intangible assets acquired from SOFTER (Note 4) during the year ended December 31, 2016, with a weighted average amortization period of 12 years.
[2]	Primarily related to intangible assets acquired by Fairway (Note 5) during the year ended December 31, 2015, with a weighted average amortization period of 16 years.

Goodwill and Intangible Asset92

Goodwill and Intangible Assets, Net (Schedule of Indefinite-Lived Intangible Assets, Net) (Details) - Trademarks and Trade Names [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Gross Asset Value
Gross asset value	$ 74	$ 79
Acquisitions (Note 4)	12	0
Impairment loss (Note 2)	0	0
Exchange rate changes	(1)	(5)
Gross asset value	$ 85	$ 74

Goodwill and Intangible Asset93

Goodwill and Intangible Assets, Net (Schedule of Estimated Amortization Expense) (Details) $ in Millions	Dec. 31, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,017	$ 14
2,018	12
2,019	10
2,020	8
2,021	$ 8

Current Other Liabilities (Deta

Current Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities, Current [Abstract]
Asset retirement obligations	$ 9	$ 10
Benefit obligations (Note 15)	31	31
Customer rebates	51	45
Derivatives (Note 22)	3	2
Environmental (Note 16)	14	11
Insurance	6	10
Interest	15	16
Restructuring (Note 18)	16	30
Salaries and benefits	97	109
Sales and use tax/foreign withholding tax payable	21	13
Other	59	53
Total	$ 322	$ 330

Noncurrent Other Liabilities (S

Noncurrent Other Liabilities (Schedule of Noncurrent Other Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities, Noncurrent [Abstract]
Asset retirement obligations	$ 20	$ 26
Deferred proceeds	41	43
Deferred revenue	9	13
Environmental (Note 16)	50	61
Income taxes payable	6	7
Insurance	46	50
Other	43	47
Total	$ 215	$ 247

Noncurrent Other Liabilities 96

Noncurrent Other Liabilities (Schedule of Changes in Asset Retirement Obligations) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities, Noncurrent [Abstract]
Balance at beginning of year		$ 36	$ 37	$ 47
Additions	[1]	2	0	4
Accretion		1	1	1
Payments		(10)	(4)	(8)
Revisions to cash flow estimates	[2]	0	2	(7)
Exchange rate changes		0	0	0
Balance at end of year		$ 29	$ 36	$ 37
[1]	Primarily relates to sites which management no longer considers to have an indeterminate life.
[2]	Primarily relates to revisions to the estimated cost and timing of future obligations.

Noncurrent Other Liabilities 97

Noncurrent Other Liabilities (Schedule of Changes in Asset Retirement Obligations Narrative) (Details) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities, Noncurrent [Abstract]
Asset retirement obligation, liability for assets or businesses acquired	$ 10	$ 10
Asset retirement obligation, recoveries long-term receivable noncurrent other assets	$ 10

Debt (Schedule of Short-term De

Debt (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions		Dec. 31, 2016		Dec. 31, 2015
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt		$ 27		$ 56
Short-term borrowings, including amounts due to affiliates	[1]	68		52
Total		$ 118		$ 513
Weighted average interest rate, short-term borrowings		3.10%		3.30%
Bank Loans Acquired from SOFTER [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Short-term SOFTER bank loans (Note 4)	[2]	$ 23		$ 0
Weighted average interest rate, short-term borrowings		1.20%
Revolving Credit Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Line of Credit, Current	[4]	$ 0	[3]	$ 350
Weighted average interest rate, credit facility				1.80%
Accounts Receivable Securitization Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Line of Credit, Current	[6]	$ 0	[5]	$ 55
Weighted average interest rate, credit facility				0.80%
[1]	The weighted average interest rate was 3.1% and 3.3% as of December 31, 2016 and 2015, respectively.
[2]	The weighted average interest rate was 1.2% as of December 31, 2016.
[3]	The Company borrowed $409 million and repaid $411 million under its new senior unsecured revolving credit facility during the year ended December 31, 2016. The Company borrowed $245 million and repaid $595 million under its previous secured revolving credit facility during the year ended December 31, 2016.
[4]	The weighted average interest rate was 1.8% as of December 31, 2015.
[5]	The Company repaid $55 million during the year ended December 31, 2016.
[6]	The weighted average interest rate was 0.8% as of December 31, 2015.

Debt (Schedule of Long-term Deb

Debt (Schedule of Long-term Debt) (Details) € in Millions, $ in Millions		Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)		Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)		Jul. 15, 2016USD ($)	Dec. 31, 2014USD ($)	[1]	Oct. 15, 2014EUR (€)	Dec. 31, 2013USD ($)
Long-Term Debt
Subtotal		$ 2,938	$ 2,542		$ 2,938	$ 2,542
Unamortized debt issuance costs		(27)	(22)	[1]	(27)	(22)	[1]		$ (27)			$ (27)
Current installments of long-term debt		(27)	(56)		(27)	(56)
Total		2,890	2,468		2,890	2,468
Term C-2 Loan Facility [Member]
Long-Term Debt
Secured Debt	[2]	0	30		$ 0	30
Credit facility, expiration date					Oct. 15, 2016
Senior Unsecured Notes Due 2018 [Member]
Long-Term Debt
Maturity Date					Oct. 31, 2018
Term C-3 Loan Facility [Member]
Long-Term Debt
Secured Debt	[3]	0	878		$ 0	878
Senior Unsecured Term Loan Due 2021 [Member]
Long-Term Debt
Secured Debt	[4]							$ 500
Senior unsecured notes	[4]	$ 500	0		500	0
Maturity Date		Jul. 15, 2021
Senior Unsecured Notes Due 2019 [Member]
Long-Term Debt
Senior unsecured notes		$ 316	327		$ 316	327					€ 300
Maturity Date					Oct. 15, 2019
Interest Rate		3.25%			3.25%
Senior Unsecured Notes Due 2021 [Member]
Long-Term Debt
Senior unsecured notes		$ 400	400		$ 400	400
Maturity Date					Jun. 15, 2021
Interest Rate		5.875%			5.875%
Senior Unsecured Notes Due 2022 [Member]
Long-Term Debt
Senior unsecured notes		$ 500	500		$ 500	$ 500
Maturity Date						Nov. 15, 2022
Interest Rate		4.625%			4.625%
Senior Unsecured Notes Due 2023 [Member]
Long-Term Debt
Senior unsecured notes		$ 788	0		$ 788	$ 0
Maturity Date		Sep. 26, 2023
Interest Rate		1.125%			1.125%
Pollution Control and Industrial Revenue Bonds [Member]
Long-Term Debt
Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 5.70% to 6.70%		$ 0	169		$ 0	169
Year of maturity, range end					Nov. 1, 2030
Refunding loan for pollution control and industrial revenue bonds [Member]
Long-Term Debt
Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 5.70% to 6.70%		$ 170	0		$ 170	0
Year of maturity, range end		Dec. 31, 2030
Bank Loans Acquired from SOFTER [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate		1.60%			1.60%
Long-Term Debt
Pollution control and industrial revenue bonds due at various dates through 2030, interest rates ranging from 5.70% to 6.70%	[5]	$ 47	0		$ 47	0
Year of maturity, range end		Dec. 31, 2021
Obligations Under Capital Leases [Member]
Long-Term Debt
Year of maturity, range end					Mar. 31, 2054
Obligations under capital leases due at various dates through 2054		$ 217	238		$ 217	238
Long-term Debt [Member]
Long-Term Debt
Unamortized debt issuance costs		$ (21)	$ (18)		$ (21)	$ (18)
Minimum [Member] | Pollution Control and Industrial Revenue Bonds [Member]
Long-Term Debt
Interest Rate		5.70%			5.70%
Minimum [Member] | Refunding loan for pollution control and industrial revenue bonds [Member]
Long-Term Debt
Interest Rate		4.05%			4.05%
Maximum [Member] | Pollution Control and Industrial Revenue Bonds [Member]
Long-Term Debt
Interest Rate		6.70%			6.70%
Maximum [Member] | Refunding loan for pollution control and industrial revenue bonds [Member]
Long-Term Debt
Interest Rate		5.00%			5.00%
London Interbank Offered Rate (LIBOR) [Member] | Term C-3 Loan Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.25%
London Interbank Offered Rate (LIBOR) [Member] | Senior Unsecured Term Loan Due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					1.50%
European Interbank Offered Rate [Member] | Term C-2 Loan Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.00%
European Interbank Offered Rate [Member] | Term C-3 Loan Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.25%
[1]	Includes $6 million, $4 million and $5 million as of December 31, 2016, 2015 and 2014, respectively, related to the Company's revolving credit facility and accounts receivables securitization facility, which are included in noncurrent Other assets in the consolidated balance sheets.
[2]	The margin for borrowings under the Term C-2 loan facility was 2.0% above the Euro Interbank Offered Rate ("EURIBOR").
[3]	The margin for borrowings under the Term C-3 loan facility was 2.25% above LIBOR (for US dollars) and 2.25% above EURIBOR (for Euros), as applicable.
[4]	The margin for borrowings under the senior unsecured term loan due 2021 was 1.5% above LIBOR at current Celanese credit ratings.
[5]	The weighted average interest rate was 1.6% as of December 31, 2016.

Debt (Senior Credit Facilities

Debt (Senior Credit Facilities Narrative) (Details) - USD ($) $ in Millions		Jul. 15, 2016	Dec. 31, 2016
Senior Unsecured Term Loan Due 2021 [Member]
Debt Instrument [Line Items]
Secured Debt	[1]	$ 500
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		1,000
Proceeds from Lines of Credit		$ 409	$ 409
[1]	The margin for borrowings under the senior unsecured term loan due 2021 was 1.5% above LIBOR at current Celanese credit ratings.

Debt (Schedule of Balances Avai

Debt (Schedule of Balances Available for Borrowing) (Details) - USD ($) $ in Millions		Dec. 31, 2016		Sep. 26, 2016	Jul. 15, 2016	Dec. 31, 2016		Dec. 31, 2015
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Borrowings outstanding	[2]	$ 0	[1]			$ 0	[1]	$ 350
Letters of credit issued		0				0
Available for borrowing	[3]	$ 1,000				1,000
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Proceeds from Lines of Credit					$ 409	409
Repayments of Lines of Credit				$ 411		411
Revolving Credit Facility [Member] | Revolving Credit Facility1 [Member]
Debt Instrument [Line Items]
Proceeds from Lines of Credit						245
Repayments of Lines of Credit						$ 595
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.50%
[1]	The Company borrowed $409 million and repaid $411 million under its new senior unsecured revolving credit facility during the year ended December 31, 2016. The Company borrowed $245 million and repaid $595 million under its previous secured revolving credit facility during the year ended December 31, 2016.
[2]	The weighted average interest rate was 1.8% as of December 31, 2015.
[3]	The margin for borrowings under the senior unsecured revolving credit facility was 1.5% above LIBOR at current Company credit ratings.

Debt Debt (Senior Notes Narrati

Debt Debt (Senior Notes Narrative) (Details) € in Millions, $ in Millions	Sep. 26, 2016USD ($)	Oct. 15, 2014USD ($)	Oct. 31, 2014USD ($)	Dec. 31, 2016USD ($)		Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)		Sep. 26, 2016EUR (€)	Oct. 15, 2014EUR (€)
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage				100.00%
Percentage of Face									99.713%
Write off of Deferred Debt Issuance Cost				$ 3	[1]	$ 0	$ 5	[2]
Senior Unsecured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Senior unsecured notes				$ 788		0
Long-term Debt, Gross | €									€ 750
Interest Rate				1.125%
Senior Unsecured Notes Due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage		103.313%
Principal		$ 600
Debt Instrument, Repurchase Amount		620
Interest Expense, Debt		20
Gain (Loss) on Extinguishment of Debt, before Write off of Debt Issuance Cost		$ 20
Write off of Deferred Debt Issuance Cost			$ 4				$ 4
Senior Unsecured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Senior unsecured notes				$ 316		$ 327				€ 300
Interest Rate				3.25%
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Repayments of Lines of Credit	$ 411			$ 411
[1]	Includes $2 million and $1 million related to the senior secured credit facilities and the pollution control and industrial revenue bonds, respectively, which are included in Refinancing expense in the consolidated statement of operations during the year ended December 31, 2016.
[2]	Includes $4 million related to the 6.625% Notes redemption and $1 million related to the Term C-2 loan facility conversion.

Debt Debt (SOFTER Bank Loans Na

Debt Debt (SOFTER Bank Loans Narrative) (Details) - USD ($) $ in Millions	1 Months Ended
	Jan. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount		$ 3,029
Bank Loans Acquired from SOFTER [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount		$ 70
Subsequent Event [Member] | Bank Loans Acquired from SOFTER [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 69

Debt Debt (Accounts Receivable

Debt Debt (Accounts Receivable Securitization Facility) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016		Jul. 08, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers		$ 148
Accounts Receivable Securitization Facility [Member]
Debt Instrument [Line Items]
Line of Credit, Current	[2]	0	[1]		$ 55
Letters of credit issued		52
Available for borrowing		52
Line of Credit Facility, Current Borrowing Capacity		104
Line of Credit Facility, Maximum Borrowing Capacity		120	[3]	$ 120
Repayments of Lines of Credit		$ 55
[1]	The Company repaid $55 million during the year ended December 31, 2016.
[2]	The weighted average interest rate was 0.8% as of December 31, 2015.
[3]	Outstanding accounts receivable transferred to the SPE was $148 million.

Debt (Schedule of Principle Pay

Debt (Schedule of Principle Payments) (Details) $ in Millions	Dec. 31, 2016USD ($)
Debt Disclosure [Abstract]
2,017	$ 118
2,018	62
2,019	407
2,020	87
2,021	804
Thereafter	1,551
Total	$ 3,029

Debt (Schedule of Net Deferred

Debt (Schedule of Net Deferred Financing Costs) (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
		Oct. 31, 2014	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Debt Instrument [Line Items]
Deferred Finance Costs, Net			$ 22	[1]	$ 27	[1]	$ 27
Financing costs deferred			13	[2]	0		10	[3]
Accelerated amortization due to refinancing activity			(3)	[4]	0		(5)	[5]
Amortization			(5)		(5)		(5)
Deferred Finance Costs, Net			27		22	[1]	27	[1]
Senior Unsecured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Financing costs deferred							6
Term C-3 Loan Facility [Member]
Debt Instrument [Line Items]
Financing costs deferred							4
Senior Unsecured Notes Due 2018 [Member]
Debt Instrument [Line Items]
Accelerated amortization due to refinancing activity		$ (4)					(4)
Term C-2 Loan Facility [Member]
Debt Instrument [Line Items]
Accelerated amortization due to refinancing activity							(1)
New Credit Agreement [Member]
Debt Instrument [Line Items]
Financing costs deferred	[2]		5
Senior Unsecured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Financing costs deferred	[2]		6
Refunding loan for pollution control and industrial revenue bonds [Member]
Debt Instrument [Line Items]
Financing costs deferred	[2]		2
Amended Credit Agreement [Member]
Debt Instrument [Line Items]
Accelerated amortization due to refinancing activity	[4]		(2)
Pollution Control and Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Accelerated amortization due to refinancing activity	[4]		(1)
Other Noncurrent Assets [Member] | RevolvingCreditandAccountsReceivableSecuritizationFacilities [Member]
Debt Instrument [Line Items]
Deferred Finance Costs, Net	[1]		4		5
Deferred Finance Costs, Net	[1]		$ 6		$ 4		$ 5
[1]	Includes $6 million, $4 million and $5 million as of December 31, 2016, 2015 and 2014, respectively, related to the Company's revolving credit facility and accounts receivables securitization facility, which are included in noncurrent Other assets in the consolidated balance sheets.
[2]	Includes $5 million, $6 million and $2 million related to the New Credit Agreement, the 1.125% Notes and the pollution control and industrial revenue bonds, respectively, all of which are being amortized through the term of the respective financing arrangement.
[3]	Includes $6 million related to the issuance of the 3.250% Notes and $4 million related to the September 2014 amendment to the Celanese US existing senior secured credit facilities.
[4]	Includes $2 million and $1 million related to the senior secured credit facilities and the pollution control and industrial revenue bonds, respectively, which are included in Refinancing expense in the consolidated statement of operations during the year ended December 31, 2016.
[5]	Includes $4 million related to the 6.625% Notes redemption and $1 million related to the Term C-2 loan facility conversion.

Benefit Obligations (Schedule o

Benefit Obligations (Schedule of Contributions to Multiemployer Defined Benefit Pension Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Multiemployer defined benefit plan	$ 7	$ 6	$ 8

Benefit Obligations (Schedul108

Benefit Obligations (Schedule of Other Postemployment Obligations) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Postemployment benefits	$ 9	$ 11

Benefit Obligations Benefit Obl

Benefit Obligations Benefit Obligations (Schedule of Contributions to Defined Contribution Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Defined contribution plans	$ 43	$ 44	$ 40

Benefit Obligations (Schedul110

Benefit Obligations (Schedule of Company's Pension and Post Retirement Benefit Plans) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net amount recognized		$ 4	$ (3)	$ 54
Other comprehensive (income) loss, tax effect		4	3
Pension Benefits [Member]
Change in Projected Benefit Obligation
Projected benefit obligation as of beginning of period		3,635	3,915
Service cost		8	12	11
Interest cost		113	139	168
Participant contributions		0	0
Plan amendments		0	0
Net actuarial (gain) loss	[1]	102	(141)
Settlements		(1)	0
Benefits paid	[2]	(232)	(234)
Federal subsidy on Medicare Part D		0	0
Curtailments		0	(1)
Special termination benefits		3	2
Exchange rate changes		(18)	(65)
Other		0	8
Projected benefit obligation as of end of period		3,610	3,635	3,915
Change in Plan Assets
Fair value of plan assets as of beginning of period		2,508	2,789
Actual return on plan assets		177	(67)
Employer contributions		346	59
Participant contributions		0	0
Settlements		(1)	0
Benefits paid	[2]	(232)	(234)
Exchange rate changes		(14)	(39)
Fair value of plan assets as of end of period		2,784	2,508	2,789
Funded status as of end of period		(826)	(1,127)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Noncurrent Other assets		22	16
Current Other liabilities		(25)	(25)
Benefit obligations		(823)	(1,118)
Net amount recognized		(826)	(1,127)
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net actuarial (gain) loss	[3]	18	16
Prior service (benefit) cost		(1)	(1)
Net amount recognized	[4]	17	15
Postretirement Benefits [Member]
Change in Projected Benefit Obligation
Projected benefit obligation as of beginning of period		66	85
Service cost		0	1	1
Interest cost		2	3	4
Participant contributions		0	1
Plan amendments		0	(6)
Net actuarial (gain) loss	[1]	3	(8)
Settlements		0	0
Benefits paid	[2]	(4)	(5)
Federal subsidy on Medicare Part D		0	0
Curtailments		0	0
Special termination benefits		0	0
Exchange rate changes		0	(5)
Other		0	0
Projected benefit obligation as of end of period		67	66	85
Change in Plan Assets
Fair value of plan assets as of beginning of period		0	0
Actual return on plan assets		0	0
Employer contributions		4	4
Participant contributions		0	1
Settlements		0	0
Benefits paid	[2]	(4)	(5)
Exchange rate changes		0	0
Fair value of plan assets as of end of period		0	0	$ 0
Funded status as of end of period		(67)	(66)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Noncurrent Other assets		0	0
Current Other liabilities		(5)	(4)
Benefit obligations		(62)	(62)
Net amount recognized		(67)	(66)
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net actuarial (gain) loss	[3]	0	0
Prior service (benefit) cost		(1)	(4)
Net amount recognized	[4]	(1)	(4)
Nonqualified Pension Benefits [Member]
Change in Projected Benefit Obligation
Benefits paid		(22)	(22)
Change in Plan Assets
Benefits paid		$ (22)	$ (22)
[1]	Primarily relates to change in discount rates.
[2]	Includes benefit payments to nonqualified pension plans of $22 million and $22 million as of December 31, 2016 and 2015, respectively.
[3]	Relates to the pension plans of the Company's equity method investments.
[4]	Amount shown net of an income tax benefit of $4 million and $3 million as of December 31, 2016 and 2015, respectively, in the consolidated statements of equity (Note 17).

Benefit Obligations (Schedul111

Benefit Obligations (Schedule of Percentage of US and International Projected Benefit Obligation) (Details)	Dec. 31, 2016	Dec. 31, 2015
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of projected benefit obligation	100.00%	100.00%
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of projected benefit obligation	85.00%	86.00%
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of projected benefit obligation	15.00%	14.00%
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of projected benefit obligation	100.00%	100.00%
United States Postretirement Benefit Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of projected benefit obligation	57.00%	61.00%
Foreign Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of projected benefit obligation	43.00%	39.00%

Benefit Obligations (Schedul112

Benefit Obligations (Schedule of Percentage of US and International Fair Value of Plan Assets) (Details)	Dec. 31, 2016	Dec. 31, 2015
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets Percentage	100.00%	100.00%
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets Percentage	88.00%	87.00%
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets Percentage	12.00%	13.00%

Benefit Obligations (Schedul113

Benefit Obligations (Schedule of Pension Plans with Projected Benefit Obligations in Excess of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Projected benefit obligation	$ 3,559	$ 3,588
Fair value of plan assets	$ 2,711	$ 2,445

Benefit Obligations (Schedul114

Benefit Obligations (Schedule of Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Accumulated benefit obligation	$ 3,538	$ 3,570
Fair value of plan assets	$ 2,708	$ 2,442

Benefit Obligations (Schedul115

Benefit Obligations (Schedule of Accumulated Benefit Obligation for All Defined Benefit Pension Plans) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Accumulated benefit obligation	$ 3,591	$ 3,619

Benefit Obligations (Schedul116

Benefit Obligations (Schedule of Net Periodic Benefit Costs Recognized) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Recognized actuarial (gain) loss		$ 103		$ 127		$ 350
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost		8		12		11
Interest cost		113		139		168
Expected return on plan assets		(177)		(209)		(214)
Amortization of prior service cost / (credit)		0		0		0
Recognized actuarial (gain) loss		101	[1]	134	[2]	339	[3]
Curtailment (gain) loss		0		(3)		0
Settlement (gain) loss		0		0		(78)
Special termination benefit		3		2		0
Total		48		75		226
Recognized actuarial (gain) loss relating to mortality table change	[2]	(48)		(62)		53
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost		0		1		1
Interest cost		2		3		4
Expected return on plan assets		0		0		0
Amortization of prior service cost / (credit)		(3)		0		(83)
Recognized actuarial (gain) loss		2		(7)		11
Curtailment (gain) loss		0		0		0
Settlement (gain) loss		0		0		0
Special termination benefit		0		0		0
Total		$ 1		$ (3)		(67)
UNITED STATES | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement (gain) loss						(78)
UNITED STATES | Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost / (credit)						$ (84)
[1]	Includes a gain of $48 million reflecting the incorporation of the RP-2016 mortality tables into the actuarial assumptions for the US pension plans.
[2]	Includes a gain of $62 million reflecting the incorporation of the RP-2015 mortality tables into the actuarial assumptions for the US pension plans.
[3]	Includes a loss of $53 million reflecting the incorporation of the RP-2014 mortality tables into the actuarial assumptions for the US pension plans.

Benefit Obligations (Schedul117

Benefit Obligations (Schedule of Amortization of Accumulated Other Comprehensive Income (Loss), Net Into Net Periodic Benefit Cost) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	$ 0
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	$ (2)

Benefit Obligations (Schedul118

Benefit Obligations (Schedule of Nonqualified Pension Plans Funded with Nonqualified Trusts) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Noncurrent Other assets, consisting of insurance contracts	$ 49	$ 55
Nonqualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncurrent Other assets, consisting of insurance contracts	49	55
Current Other liabilities	22	22
Benefit obligations	241	246
Nonqualified Pension Obligations [Member] | Nonqualified Trust Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Marketable securities, at fair value	$ 30	$ 30

Benefit Obligations (Schedul119

Benefit Obligations (Schedule of Expense Related to Nonqualified Pension Plans Included in Net Periodic Benefit Cost, Excluding Returns on Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Nonqualified Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	$ 18	$ 0	[1]	$ 43
[1]	Actuarial gain offset interest cost.

Benefit Obligations (Pension an

Benefit Obligations (Pension and Other Postretirement Obligations Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Mar. 27, 2014	Nov. 05, 2013
Defined Benefit Plan Disclosure [Line Items]
Pension and postretirement net periodic benefit cost		$ (54)	$ (52)	$ (113)
Multiemployer plans, funded status		At least 80 percent	At least 80 percent	At least 80 percent
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement gain (loss)		$ 0	$ 0	$ 78
Curtailment gain (loss)		0	3	0
Amortization of prior service cost (credit)		0	0	0
Lump-sum buyout payments		1	0
Pension Benefits [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Settlement gain (loss)				78
Lump-sum buyout payments	$ 143
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement gain (loss)		0	0	0
Curtailment gain (loss)		0	0	0
Amortization of prior service cost (credit)		(3)	0	(83)
Lump-sum buyout payments		0	$ 0
Postretirement Benefits [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (credit)						$ (92)
Amortization of prior service cost (credit)				(84)
Lump-sum buyout payments				$ 40
Narrows Union Employees [Member] | Postretirement Benefits [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (credit)					$ (5)
Change in Assumptions for Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and postretirement net periodic benefit cost		$ 29

Benefit Obligations (Schedul121

Benefit Obligations (Schedule of Principle Weighted Average Assumptions Used to Determine Benefit Obligations and Benefit Cost) (Details)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate obligations		3.70%	4.00%
Rate of compensation increase		2.80%	2.70%
Discount rate NPBC		4.00%	3.70%	4.60%
Discount rate NPBC - service cost	[1]	3.10%	3.70%	4.60%
Discount rate NPBC - interest cost	[1]	3.20%	3.70%	4.60%
Expected return on plan assets		7.30%	7.80%	8.20%
Rate of compensation increase NPBC		2.70%	2.80%	3.00%
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate obligations		3.90%	4.20%
Discount rate NPBC		4.20%	3.90%	4.70%
Discount rate NPBC - service cost	[1]	4.50%	3.90%	4.70%
Discount rate NPBC - interest cost	[1]	3.40%	3.90%	4.70%
Expected return on plan assets		7.50%	8.00%	8.50%
Rate of compensation increase NPBC				3.00%
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate obligations		2.10%	2.60%
Rate of compensation increase		2.80%	2.70%
Discount rate NPBC		2.60%	2.40%	3.70%
Discount rate NPBC - service cost	[1]	3.10%	2.40%	3.70%
Discount rate NPBC - interest cost	[1]	2.20%	2.40%	3.70%
Expected return on plan assets		6.10%	6.00%	6.20%
Rate of compensation increase NPBC		2.70%	2.80%	2.80%
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate obligations		3.40%	3.70%
Discount rate NPBC		3.90%	3.60%	4.40%
Discount rate NPBC - service cost	[1]	3.80%	3.60%	4.40%
Discount rate NPBC - interest cost	[1]	3.10%	3.60%	4.40%
United States Postretirement Benefit Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate obligations		3.80%	4.00%
Discount rate NPBC		4.00%	3.70%	4.30%
Discount rate NPBC - service cost	[1]	4.20%	3.70%	4.30%
Discount rate NPBC - interest cost	[1]	3.10%	3.70%	4.30%
Foreign Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate obligations		3.30%	3.60%
Discount rate NPBC		3.60%	3.50%	4.50%
Discount rate NPBC - service cost	[1]	3.80%	3.50%	4.50%
Discount rate NPBC - interest cost	[1]	3.10%	3.50%	4.50%
[1]	Weighted-average discount rates in 2016 reflect the adoption of the full yield curve approach.

Benefit Obligations Benefit 122

Benefit Obligations Benefit Obligations (Schedule of US Health Care Cost Trend Rates) (Details) - United States Postretirement Benefit Plan of US Entity [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ScheduleofHealthCareCostTrend [Line Items]
Health care cost trend rate assumed for next year	9.50%	10.00%	7.00%
Health care cost trend ultimate rate	5.00%	5.00%	5.00%
Health care cost trend ultimate rate year	2,026	2,026	2,020

Benefit Obligations (Schedul123

Benefit Obligations (Schedule of Impact of One-Percentage-Point Change in Assumed Health Care Cost Trend) (Details) - United States Postretirement Benefit Plan of US Entity [Member] $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Postretirement obligations, impact of 1% decrease	$ 2
Postretirement obligations, impact of 1% increase	2
Service and interest cost, impact of 1% decrease	0
Service and interest cost, impact of 1% increase	$ 0

Benefit Obligations (Valuation

Benefit Obligations (Valuation Narrative) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	7.30%	7.80%	8.20%
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	6.90%
Expected return on plan assets	7.50%	8.00%	8.50%
United States Postretirement Benefit Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next year	9.50%	10.00%	7.00%
Health care cost trend ultimate rate	5.00%	5.00%	5.00%

Benefit Obligations (Schedul125

Benefit Obligations (Schedule of Weighted Average Target Asset Allocations) (Details)	12 Months Ended
	Dec. 31, 2016
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	100.00%
United States Pension Plan of US Entity [Member] | Bonds - Domestic to Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	54.00%
United States Pension Plan of US Entity [Member] | Equities - Domestic to Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	26.00%
United States Pension Plan of US Entity [Member] | Equities - International to Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	20.00%
United States Pension Plan of US Entity [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	0.00%
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	100.00%
Foreign Pension Plan [Member] | Bonds - Domestic to Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	58.00%
Foreign Pension Plan [Member] | Equities - Domestic to Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	16.00%
Foreign Pension Plan [Member] | Equities - International to Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	0.00%
Foreign Pension Plan [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average target asset allocations	26.00%

Benefit Obligations (Schedul126

Benefit Obligations (Schedule of Fair Values of Pension Plan Assets) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets, fair value non-financial receivables		$ 20	$ 25
Pension plan assets, fair value non-financial payables		10	14
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[1]	(2,296)	(2,086)
Total liabilities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		3	25
Swaps [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		2	25
Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		1	0
Total plan assets [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[2]	(2,299)	(2,111)
Cash and Cash quivalents [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(2)	(4)
Equities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(195)	(251)
Swaps [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(2)	(25)
Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
US Companies [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(260)	(241)
International Companies [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(345)	(327)
Corporate Debt [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(798)	(692)
Treasuries, Other Debt [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(830)	(767)
Mortgage Backed Securities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(7)	(5)
Registered Investment Companies [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(134)	(117)
Short-term Investments [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(149)	(43)
Insurance Contracts [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(31)	(32)
Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(24)	(18)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[1]	(668)	(615)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Total liabilities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Swaps [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Total plan assets [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[2]	(668)	(615)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash and Cash quivalents [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(2)	(4)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Swaps [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | US Companies [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(260)	(241)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | International Companies [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(345)	(327)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Debt [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Treasuries, Other Debt [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(37)	(25)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage Backed Securities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Insurance Contracts [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(24)	(18)
Significant Other Observable Inputs (Level 2) [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[1]	(1,628)	(1,471)
Significant Other Observable Inputs (Level 2) [Member] | Total liabilities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		3	25
Significant Other Observable Inputs (Level 2) [Member] | Swaps [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		2	25
Significant Other Observable Inputs (Level 2) [Member] | Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		1	0
Significant Other Observable Inputs (Level 2) [Member] | Total plan assets [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[2]	(1,631)	(1,496)
Significant Other Observable Inputs (Level 2) [Member] | Cash and Cash quivalents [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Significant Other Observable Inputs (Level 2) [Member] | Swaps [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(2)	(25)
Significant Other Observable Inputs (Level 2) [Member] | Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Significant Other Observable Inputs (Level 2) [Member] | US Companies [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Significant Other Observable Inputs (Level 2) [Member] | International Companies [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(798)	(692)
Significant Other Observable Inputs (Level 2) [Member] | Treasuries, Other Debt [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(793)	(742)
Significant Other Observable Inputs (Level 2) [Member] | Mortgage Backed Securities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(7)	(5)
Significant Other Observable Inputs (Level 2) [Member] | Insurance Contracts [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(31)	(32)
Significant Other Observable Inputs (Level 2) [Member] | Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		$ 0	$ 0
[1]	Total net assets excludes non-financial plan receivables and payables of $20 million and $10 million, respectively, as of December 31, 2016 and $25 million and $14 million, respectively, as of December 31, 2015. Non-financial items include due to/from broker, interest receivables and accrued expenses.
[2]	In accordance with ASU 2015-07 (Note 2), certain investments that are measured at fair value using the NAV per share practical expedient have not been classified in the fair value hierarchy. Total investments, at fair value, for the year ended December 31, 2016 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $195 million, $134 million and $149 million, respectively. Total investments, at fair value, for the year ended December 31, 2015 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $251 million, $117 million and $43 million, respectively.

Benefit Obligations Benefit 127

Benefit Obligations Benefit Obligations (Schedule of Pension Contributions Expected to be Contributed to the Plans) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 20
Nonqualified Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	22
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 4

Benefit Obligations (Schedul128

Benefit Obligations (Schedule of Pension Benefits Expected to be Paid from the Plans or From the Company's Assets) (Details) $ in Millions	Dec. 31, 2016USD ($)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
2,017	$ 233	[1]
2,018	231	[1]
2,019	229	[1]
2,020	228	[1]
2,021	225	[1]
2022-2026	1,093	[1]
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
2,017	5	[2]
2,018	5	[2]
2,019	4	[2]
2,020	4	[2]
2,021	4	[2]
2022-2026	$ 19	[2]
[1]	Payments are expected to be made primarily from plan assets.
[2]	Payments are expected to be made primarily from Company assets.

Benefit Obligations (Plan Asset

Benefit Obligations (Plan Assets Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets		7.30%	7.80%	8.20%
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		$ 20
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets		6.90%
Expected return on plan assets		7.50%	8.00%	8.50%
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		$ 4
Nonqualified Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		$ 22
Scenario, Forecast [Member] | United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	7.50%

Environmental (Schedule of Envi

Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Environmental Remediation Obligations [Abstract]
Demerger obligations (Note 24)	$ 18	$ 22
Divestiture obligations (Note 24)	16	17
Active sites	16	18
US Superfund sites	11	13
Other environmental remediation reserves	3	2
Total	$ 64	$ 72

Environmental (Remediation Narr

Environmental (Remediation Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Spondon, UK, Former Owner [Member] | Consumer Specialties [Member]
Environmental Disclosure [Line Items]
Environmental insurance recoveries receivable	$ 2	$ 4

Environmental (Schedule of E132

Environmental (Schedule of Environmental Ownership and Liability Percentages) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Environmental Disclosure [Line Items]
Reserves		$ 64	$ 72
InfraServ GmbH & Co. Gendorf KG [Member]
Environmental Disclosure [Line Items]
Ownership percentage		39.00%
Liability percentage		10.00%
Reserves	[1]	$ 10
InfraServ GmbH & Co. Hoechst KG [Member]
Environmental Disclosure [Line Items]
Ownership percentage		32.00%
Liability percentage		40.00%
Reserves	[1]	$ 62
InfraServ GmbH & Co. Knapsack KG [Member]
Environmental Disclosure [Line Items]
Ownership percentage		27.00%
Liability percentage		22.00%
Reserves	[1]	$ 1
[1]	Gross reserves maintained by the respective InfraServ entity.

Environmental (German Infraserv

Environmental (German Infraservs Narrative) (Details)	Dec. 31, 2016
Environmental Remediation Obligations [Abstract]
Demerger obligations indemnification percentage	66.66%
Other demerger obligations indemnification percentage	66.66%

Environmental Environmental (US

Environmental Environmental (US Superfund Sites Narrative) (Details) - Passaic River, New Jersey [Member] $ in Billions	Mar. 03, 2016USD ($)	Dec. 31, 2016
Site Contingency [Line Items]
Number of Parties included in USEPA order		70
EPA Estimated Cost	$ 1.4
Environmental Liability Percentage		1.00%

Stockholders' Equity (Schedule

Stockholders' Equity (Schedule of Dividend Increases) (Details) - $ / shares	1 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
Schedule of Dividend Increases [Line Items]
Percent increase in common stock dividend	20.00%	20.00%	39.00%
Common Stock, Dividends, Per Share, Board Increase Announcement, Quarterly	$ 0.36	$ 0.30	$ 0.25
Common stock, Dividends, Per Share, Board Increase Announcement, Annual	$ 1.44	$ 1.20	$ 1

Stockholders' Equity (Schedu136

Stockholders' Equity (Schedule of Treasury Stock) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended				107 Months Ended
		Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2016
Class of Stock [Line Items]
Share repurchase plan, authorized repurchase amount	[1]	$ 2,366				$ 2,366
Shares repurchased		7,034,420	6,640,601	[2]	4,338,488	34,342,216
Average purchase price per share		$ 71.08	$ 63.31		$ 57.61	$ 53.44
Amount spent on repurchased shares (in millions)		$ 500	$ 420		$ 250	$ 1,835
Aggregate Board of Directors repurchase authorizations during the period	[1]	$ 0	$ 1,000		$ 473
Restricted Stock [Member]
Class of Stock [Line Items]
Shares withheld, tax withholding			9,264
[1]	These authorizations give management discretion in determining the timing and conditions under which shares may be repurchased. This repurchase program began in February 2008 and does not have an expiration date.
[2]	The year ended December 31, 2015 excludes 9,264 shares withheld from an executive officer to cover statutory minimum withholding requirements for personal income taxes related to the vesting of restricted stock. Restricted stock awards are considered outstanding at the time of issuance. Accordingly, the shares withheld are treated as treasury shares.

Stockholders' Equity (Schedu137

Stockholders' Equity (Schedule of Components of Other Comprehensive Income (Loss), Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Comprehensive Income (Loss) [Line Items]
Unrealized gain (loss) on marketable securities, gross amount	$ 0	$ 0	$ 0
Unrealized gain (loss) on marketable securities, income tax (provision) benefit	0	0	1
Unrealized gain (loss) on marketable securities, net amount	0	0	1
Foreign currency translation, gross amount	(22)	(193)	(188)
Foreign currency translation, income tax (provision) benefit	11	5	40
Foreign currency translation, net amount	(11)	(188)	(148)
Gain (loss) on cash flow hedges, gross amount	5	3	0
Gain (loss) on cash flow hedges, income tax (provision) benefit	0	(1)	40
Gain (loss) on cash flow hedges, net amount	5	2	40
Pension and postretirement benefits, gross amount	(5)	4	(84)
Pension and postretirement benefits, income tax (provision) benefit	1	(1)	30
Pension and postretirement benefits, net amount	(4)	3	(54)
Total other comprehensive income (loss), gross amount	(22)	(186)	(272)
Total other comprehensive income (loss), income tax (provision) benefit	12	3	111
Total other comprehensive income (loss), net of tax	$ (10)	$ (183)	$ (161)

Stockholders' Equity (Schedu138

Stockholders' Equity (Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss), Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of the beginning of the period	$ (348)	$ (165)	$ (4)
Other comprehensive income (loss) before reclassifications	(18)	(189)	(198)
Amounts reclassified from accumulated other comprehensive income (loss)	(4)	3	(74)
Income tax (provision) benefit	12	3	111
Balance as of the end of the period	(358)	(348)	(165)
Unrealized Gain (Loss) on Marketable Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of the beginning of the period	1	1	0
Other comprehensive income (loss) before reclassifications	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Income tax (provision) benefit	0	0	1
Balance as of the end of the period	1	1	1
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of the beginning of the period	(339)	(151)	(3)
Other comprehensive income (loss) before reclassifications	(22)	(193)	(188)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Income tax (provision) benefit	11	5	40
Balance as of the end of the period	(350)	(339)	(151)
Gain (Loss) from Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of the beginning of the period	(2)	(4)	(44)
Other comprehensive income (loss) before reclassifications	7	(2)	(9)
Amounts reclassified from accumulated other comprehensive income (loss)	(2)	5	9
Income tax (provision) benefit	0	(1)	40
Balance as of the end of the period	3	(2)	(4)
Pension and Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of the beginning of the period	(8)	(11)	43
Other comprehensive income (loss) before reclassifications	(3)	6	(1)
Amounts reclassified from accumulated other comprehensive income (loss)	(2)	(2)	(83)
Income tax (provision) benefit	1	(1)	30
Balance as of the end of the period	$ (12)	$ (8)	$ (11)

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - Subsequent Event [Member] $ / shares in Units, $ in Millions	Feb. 03, 2017USD ($)$ / shares
Equity, Class of Treasury Stock [Line Items]
Quarterly cash dividend per share | $ / shares	$ 0.36
Cash dividend | $	$ 51

Other (Charges) Gains, Net (Sch

Other (Charges) Gains, Net (Schedule of Other (Charges) Gains, Net) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Employee termination benefits (Note 4)(1)	[1]	$ (11)	$ (53)	$ (7)
Asset impairments		(2)	(126)	0
Other plant/office closures		0	0	2
Singapore contract termination		0	(174)	0
Commercial disputes		2	2	11
Other		0	0	9
Other (charges) gains, net		(11)	(351)	$ 15
Pension Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Special Termination Benefits recorded in Benefit Obligations		$ (3)	$ (1)
[1]	Includes $3 million and $1 million of special termination benefits included in Benefit obligations in the consolidated balance sheet as of December 31, 2016 and 2015, respectively.

Other (Charges) Gains, Net (141

Other (Charges) Gains, Net (Schedule of Restructuring Reserves) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Reserve as of the end of the period	$ 16
Total	16
Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	30	$ 14
Additions	10	52
Cash payments	(21)	(28)
Other changes	(2)	(6)
Exchange rate changes	(1)	(2)
Reserve as of the end of the period	16	30
Total	30	14
Plant/Office Closures [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	0	7
Additions	0	0
Cash payments	0	(6)
Other changes	0	0
Exchange rate changes	0	(1)
Reserve as of the end of the period	0	0
Total	0	7
Advanced Engineered Materials [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the end of the period	1
Total	1
Advanced Engineered Materials [Member] | Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	3	4
Additions	2	7
Cash payments	(3)	(4)
Other changes	(1)	(3)
Exchange rate changes	0	(1)
Reserve as of the end of the period	1	3
Total	3	4
Advanced Engineered Materials [Member] | Plant/Office Closures [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	0	0
Additions	0	0
Cash payments	0	0
Other changes	0	0
Exchange rate changes	0	0
Reserve as of the end of the period	0	0
Total	0	0
Consumer Specialties [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the end of the period	9
Total	9
Consumer Specialties [Member] | Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	14	1
Additions	2	25
Cash payments	(6)	(12)
Other changes	0	0
Exchange rate changes	(1)	0
Reserve as of the end of the period	9	14
Total	14	1
Consumer Specialties [Member] | Plant/Office Closures [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	0	0
Additions	0	0
Cash payments	0	0
Other changes	0	0
Exchange rate changes	0	0
Reserve as of the end of the period	0	0
Total	0	0
Industrial Specialties [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the end of the period	2
Total	2
Industrial Specialties [Member] | Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	6	1
Additions	2	9
Cash payments	(6)	(4)
Other changes	0	0
Exchange rate changes	0	0
Reserve as of the end of the period	2	6
Total	6	1
Industrial Specialties [Member] | Plant/Office Closures [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	0	0
Additions	0	0
Cash payments	0	0
Other changes	0	0
Exchange rate changes	0	0
Reserve as of the end of the period	0	0
Total	0	0
Acetyl Intermediates [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the end of the period	1
Total	1
Acetyl Intermediates [Member] | Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	1	5
Additions	1	2
Cash payments	(1)	(5)
Other changes	0	0
Exchange rate changes	0	(1)
Reserve as of the end of the period	1	1
Total	1	5
Acetyl Intermediates [Member] | Plant/Office Closures [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	0	7
Additions	0	0
Cash payments	0	(6)
Other changes	0	0
Exchange rate changes	0	(1)
Reserve as of the end of the period	0	0
Total	0	7
Other [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the end of the period	3
Total	3
Other [Member] | Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	6	3
Additions	3	9
Cash payments	(5)	(3)
Other changes	(1)	(3)
Exchange rate changes	0	0
Reserve as of the end of the period	3	6
Total	6	3
Other [Member] | Plant/Office Closures [Member]
Restructuring Cost and Reserve [Line Items]
Reserve as of the beginning of the period	0	0
Additions	0	0
Cash payments	0	0
Other changes	0	0
Exchange rate changes	0	0
Reserve as of the end of the period	0	0
Total	$ 0	$ 0

Other (Charges) Gains, Net (Nar

Other (Charges) Gains, Net (Narrative) (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
		Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 01, 2015
Other (Charges) Gains, Net [Line Items]
Commercial disputes				$ 2	$ 2	$ 11
Employee termination benefits	[1]			(11)	(53)	(7)
Asset impairments				(2)	(126)	0
Singapore contract termination				0	(174)	0
Employee Termination Benefits [Member]
Other (Charges) Gains, Net [Line Items]
Employee termination benefits				(11)	(21)
Consumer Specialties [Member]
Other (Charges) Gains, Net [Line Items]
Commercial disputes						(15)
Acetyl Intermediates [Member]
Other (Charges) Gains, Net [Line Items]
Commercial disputes						(8)
Lanaken, Belgium | Consumer Specialties [Member]
Other (Charges) Gains, Net [Line Items]
Employee termination benefits					$ (24)
Capacity Reduction Percentage		50.00%	50.00%		50.00%		50.00%
Meredosia, IL [Member] | Industrial Specialties [Member]
Other (Charges) Gains, Net [Line Items]
Employee termination benefits					$ (1)
Asset impairments					(1)
Nanjing, China [Member]
Other (Charges) Gains, Net [Line Items]
Asset impairments					(123)
Nanjing, China [Member] | Acetyl Intermediates [Member]
Other (Charges) Gains, Net [Line Items]
Asset impairments			$ (123)
SINGAPORE
Other (Charges) Gains, Net [Line Items]
Singapore contract termination					(174)
SINGAPORE | Acetyl Intermediates [Member]
Other (Charges) Gains, Net [Line Items]
Singapore contract termination		$ (174)
Roussillon, France and Tarragona, Spain [Member] | Acetyl Intermediates [Member]
Other (Charges) Gains, Net [Line Items]
Employee termination benefits						(4)
Tarragona, Spain [Member] | Industrial Specialties [Member]
Other (Charges) Gains, Net [Line Items]
Employee termination benefits					(6)
Asset impairments					(1)
Tarragona, Spain [Member] | Acetyl Intermediates [Member]
Other (Charges) Gains, Net [Line Items]
Contract termination costs						2
Other Commercial Actions [Member]
Other (Charges) Gains, Net [Line Items]
Commercial disputes						$ 12
Pension Plan [Member]
Other (Charges) Gains, Net [Line Items]
Special Termination Benefits recorded in Benefit Obligations				$ (3)	$ (1)
[1]	Includes $3 million and $1 million of special termination benefits included in Benefit obligations in the consolidated balance sheet as of December 31, 2016 and 2015, respectively.

Income Taxes (Schedule of Earni

Income Taxes (Schedule of Earnings (Loss) from Continuing Operations Before Tax by Jurisdiction) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
US		$ 326	$ 231	$ 534
International	[1]	704	257	407
Earnings (loss) from continuing operations before tax		$ 1,030	$ 488	$ 941
Effective income tax rate		12.00%	41.00%	33.00%
Aggregated Geographical [Member]
Income Taxes [Line Items]
International		$ 621	$ 330	$ 308
Effective income tax rate		1.90%	6.10%	4.80%
[1]	Includes aggregate earnings generated by operations in Bermuda, Luxembourg, the Netherlands and Hong Kong of $621 million, $330 million and $308 million for the years ended December 31, 2016, 2015 and 2014, respectively, which have an aggregate effective income tax rate of 1.9%, 6.1% and 4.8% for each year, respectively.

Income Taxes (Schedule of Incom

Income Taxes (Schedule of Income Tax Provision (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
US	$ (22)	$ 28	$ 108
International	60	152	56
Total	38	180	164
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
US	108	54	156
International	(24)	(33)	(6)
Total	84	21	150
Income tax provision (benefit)	$ 122	$ 201	$ 314

Income Taxes Income Taxes (Sche

Income Taxes Income Taxes (Schedule of Effective Tax Rate Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Income tax provision computed at US federal statutory tax rate	$ 361	$ 171	$ 329
Change in valuation allowance	(18)	124	49
Equity income and dividends	(60)	(33)	(50)
(Income) expense not resulting in tax impact, net	(152)	(32)	(34)
US tax effect of foreign earnings and dividends	302	15	49
Foreign tax credits	(293)	(4)	(34)
Other foreign tax rate differentials	(44)	(41)	(33)
Tax-deductible interest on foreign equity investments and other related items	0	0	12
State income taxes, net of federal benefit	8	6	9
Other, net	18	(5)	17
Income tax provision (benefit)	$ 122	$ 201	$ 314
Effective income tax rate	12.00%	41.00%	33.00%
UNITED STATES
Income Taxes [Line Items]
US federal statutory tax rate	35.00%

Income Taxes (Income Tax Provis

Income Taxes (Income Tax Provision Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Tax Credit Carryforward [Line Items]
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions		$ 29
Asset impairments	$ (2)	(126)	$ 0
Singapore contract termination	0	$ (174)	$ 0
Accumulated but undistributed earnings permanently reinvested in business	$ 4,300
Effective income tax rate	12.00%	41.00%	33.00%
SINGAPORE
Tax Credit Carryforward [Line Items]
Singapore contract termination		$ (174)
Nanjing, China [Member]
Tax Credit Carryforward [Line Items]
Asset impairments		$ (123)

Income Taxes (Schedule of Conso

Income Taxes (Schedule of Consolidated Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets
Pension and postretirement obligations		$ 313	$ 434
Accrued expenses		61	40
Inventory		11	14
Net operating loss		661	683
Tax credit carryforwards		136	88
Other		161	202
Subtotal		1,343	1,461
Valuation allowance	[1]	(386)	(448)
Total		957	1,013
Deferred Tax Liabilities
Depreciation and amortization	[2]	366	380
Investments in affiliates	[2]	475	395
Other	[2]	87	114
Total		928	889
Net deferred tax assets (liabilities)		$ 29	$ 124
[1]	Includes deferred tax asset valuation allowances for the Company's deferred tax assets in the US, Luxembourg, Spain, China, Singapore, the United Kingdom, Canada and France. These valuation allowances relate primarily to net operating loss carryforward benefits and other net deferred tax assets, all of which may not be realizable.
[2]	Includes deferred tax liabilities from the acquisition of SOFTER (Note 4).

Income Taxes (Deferred Income T

Income Taxes (Deferred Income Taxes Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Income Tax Disclosure [Abstract]
Valuation allowance change	$ 62

Income Taxes (Net Operating Los

Income Taxes (Net Operating Loss Carryforwards Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
US Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 36
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	54
Valuation allowance offset for State net operating loss carryforwards due to uncertain recoverability	50
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	2,300
CHINA
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 418
Minimum [Member] | US Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward expiration	Dec. 31, 2021
Minimum [Member] | CHINA
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward expiration	Dec. 31, 2017
Maximum [Member] | CHINA
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward expiration	Dec. 31, 2021

Income Taxes (Schedule of Recon

Income Taxes (Schedule of Reconciliation of Unrecognized Tax Benefits Included in Uncertain Tax Positions) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits		$ 158	$ 228	$ 244	$ 114	$ 158	$ 228
As of the beginning of the year		158	228	244
Increases in tax positions for the current year		9	13	7
Increases in tax positions for prior years(1)	[1]	11	76	24
Decreases in tax positions for prior years		(9)	(126)	(46)
Decreases due to settlements		(55)	(33)	(1)
As of the end of the year		114	158	228
Total uncertain tax positions that if recognized would impact the effective tax rate					87	144	245
Total amount of interest expense (benefit) and penalties recognized in the consolidated statements of operations(2)	[2]	(16)	(12)	$ 2
Total amount of interest expense and penalties recognized in the consolidated balance sheets					26	$ 43	$ 67
Decreases in interest and penalties due to settlements		(1)	$ (12)
SO.F.TER. S.p.A. [Member]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits		19			$ 19
As of the end of the year		$ 19
[1]	Includes uncertain tax positions related to the SOFTER acquisition (Note 4) of $19 million for the year ended December 31, 2016.
[2]	This amount reflects interest on uncertain tax positions and release of certain tax positions as a result of audit closure that was reflected in the consolidated statements of operations. In addition, for the years ended December 31, 2016 and 2015, the Company also paid an additional $1 million and $12 million, respectively, of previously accrued amounts due to settlements of tax examinations.

Income Taxes (Uncertain Tax Pos

Income Taxes (Uncertain Tax Positions Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Income Tax Examination [Line Items]
Income Tax Examination, pre-tax adjustments proposed	$ 192
Income Tax Examination, Estimate of Possible Loss	$ 67

Management Compensation Plan152

Management Compensation Plans (Schedule of Total Shares Available for and Subject to Awards) (Details)	Dec. 31, 2016shares
Global Incentive Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Awards	5,429,360
Shares Subject to Outstanding Awards	1,798,343
Stock Incentive Plan 2004 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Awards	0
Shares Subject to Outstanding Awards	12,500	[1]
[1]	No RSUs remain outstanding under the 2004 Stock Incentive Plan.

Management Compensation Plan153

Management Compensation Plans (Schedule of Realized Income Tax Benefits from Stock Option Exercises and RSU Vestings) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Income tax benefit realized	$ 7	$ 2	$ 2
Amount reversed in current year related to prior year	$ 0	$ 0	$ 0

Management Compensation Plan154

Management Compensation Plans (Schedule of Summary of Changes in Stock Options Outstanding) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
As of beginning of period, number of options	249
Granted, number of options	0
Exercised, number of options	(195)
Forfeited, number of options	0
Expired, number of options	0
As of end of period, number of options	54	[1]	249
As of beginning of period, weighted average exercise price	$ 35.19
Granted, weighted average exercise price	0
Exercised, weighted average exercise price	33.08
Forfeited, weighted average exercise price	0
Expired, weighted average exercise price	0
As of end of period, weighted average exercise price	$ 42.77	[1]	$ 35.19
As of beginning of period, weighted average remaining contractual term	2 years	[1]	2 years 5 months
As of end of period, weighted average remaining contractual term	2 years	[1]	2 years 5 months
As of beginning of period, aggregate intrinsic value	$ 9
As of end of period, aggregate intrinsic value	$ 2	[1]	$ 9
[1]	All stock options outstanding as of December 31, 2016 were vested and exercisable.

Management Compensation Plan155

Management Compensation Plans (Schedule of Intrinsic Value of Stock Option Exercises) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Intrinsic value	$ 7	$ 4	$ 7

Management Compensation Plan156

Management Compensation Plans (Schedule of Summary of Changes in Performance-based RSUs Outstanding) (Details) - Performance Shares [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
As of beginning of period, number of units | shares	1,231
Vested, number of units | shares	(966)
Canceled, number of units | shares	0
Forfeited, number of units | shares	(109)
As of end of period, number of units | shares	1,085
As of beginning of period, weighted average fair value | $ / shares	$ 50.24
Vested, weighted average fair value | $ / shares	48.03
Canceled, weighted average fair value | $ / shares	0
Forfeited, weighted average fair value | $ / shares	53.55
As of end of period, weighted average fair value | $ / shares	$ 53.36
2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of units | shares	446
Granted, weighted average fair value | $ / shares	$ 56.24
2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of units | shares	483	[1]
Granted, weighted average fair value | $ / shares	$ 48.03	[1]
[1]	Represents additional performance-based RSU grants in 2013 and 2014 that were awarded in 2016 as a result of achieving internal profitability targets.

Management Compensation Plan157

Management Compensation Plans (Schedule of Fair Value of Shares Vested for Performance-based RSUs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total	$ 64	$ 27	$ 0

Management Compensation Plan158

Management Compensation Plans (Schedule of Summary of Changes in Time-based RSUs Outstanding) (Details) - Time Restricted Stock Units (RSUs) [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
As of beginning of period, number of units | shares	105
Granted, number of units | shares	291
Vested, number of units | shares	(42)
Forfeited, number of units | shares	(24)
As of end of period, number of units | shares	330
As of beginning of period, weighted average fair value | $ / shares	$ 60.78
Granted, weighted average fair value | $ / shares	67.82
Vested, weighted average fair value | $ / shares	59.13
Forfeited, weighted average fair value | $ / shares	59.28
As of end of period, weighted average fair value | $ / shares	$ 67.32
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
As of beginning of period, number of units | shares	14
Granted, number of units | shares	15
Vested, number of units | shares	(15)
Forfeited, number of units | shares	0
As of end of period, number of units | shares	14
As of beginning of period, weighted average fair value | $ / shares	$ 64.94
Granted, weighted average fair value | $ / shares	69.76
Vested, weighted average fair value | $ / shares	65.03
Forfeited, weighted average fair value | $ / shares	0
As of end of period, weighted average fair value | $ / shares	$ 69.88

Management Compensation Plan159

Management Compensation Plans (Schedule of Fair Value of Shares Vested for Time-based RSUs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Time Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total	$ 4	$ 6	$ 9

Management Compensation Plan160

Management Compensation Plans (Restricted Stock Units Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Performance Restricted and Time Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 35
Weighted average term to recognize compensation expense	2 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Range of number of shares that will vest	zero to stretch
Director [Member] | Time Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Employee [Member] | Time Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Leases (Schedule of Future Mini

Leases (Schedule of Future Minimum Lease Payments for Capital Leases) (Details) $ in Millions	Dec. 31, 2016USD ($)
Leases [Abstract]
2,017	$ 46
2,018	44
2,019	45
2,020	44
2,021	44
Later years	146
Sublease income	0
Minimum lease commitments	369
Less amounts representing interest	(152)
Present value of net minimum lease obligations	$ 217

Leases (Schedule of Future M162

Leases (Schedule of Future Minimum Rental Payments for Operating Leases) (Details) $ in Millions	Dec. 31, 2016USD ($)
Leases [Abstract]
2,017	$ 57
2,018	53
2,019	48
2,020	42
2,021	29
Later years	166
Sublease income	0
Minimum lease commitments	$ 395

Leases (Schedule of Rent Expens

Leases (Schedule of Rent Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Leases [Abstract]
Total	$ 154	$ 154	$ 161

Derivative Financial Instrum164

Derivative Financial Instruments Derivative Financial Instruments (Schedule of Cross Currency Swaps) (Details) € in Millions, $ in Millions	Mar. 31, 2015USD ($)	Mar. 31, 2015EUR (€)	Dec. 31, 2014USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value			$ 500
Swap Derivative 4 Point 27 Percent Maturing September 11, 2020 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	$ 250
Swap Derivative 2 Point 63 Percent Maturing September 11, 2020 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value | €		€ 193
Swap Derivative 3 Point 62 Percent Maturing April 17, 2019 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value | €		€ 162
Swap Derivative 2 Point 77 Percent Maturing April 17, 2019 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	225
Cross-currency swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Cash Received on Hedge	$ 88

Derivative Financial Instrum165

Derivative Financial Instruments (Schedule of Notional Amounts of Net Foreign Exchange Exposure by Currency) (Details) - Foreign Exchange Contract [Member] $ in Millions	Dec. 31, 2016USD ($)
Derivative [Line Items]
Total	$ 76
Brazilian Real [Member]
Derivative [Line Items]
Total	(19)
British Pound Sterling [Member]
Derivative [Line Items]
Total	(78)
Canadian Dollar [Member]
Derivative [Line Items]
Total	33
China, Yuan Renminbi
Derivative [Line Items]
Total	(41)
Euro [Member]
Derivative [Line Items]
Total	138
Hungarian Forint [Member]
Derivative [Line Items]
Total	9
Indonesia, Rupiahs
Derivative [Line Items]
Total	(6)
Korea (South), Won
Derivative [Line Items]
Total	10
Singapore Dollar [Member]
Derivative [Line Items]
Total	$ 30

Derivative Financial Instrum166

Derivative Financial Instruments (Schedule of Notional Amounts of Foreign Currency Derivatives) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Total			$ 500
Foreign Exchange Contract [Member]
Derivative [Line Items]
Total	$ 508	$ 502

Derivative Financial Instrum167

Derivative Financial Instruments (Schedule of Interest Rate Swap Activity Recorded in the Consolidated Financial Statements) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Hedging activities - Interest expense		$ (120)	$ (119)	$ (147)
Swap Derivative 1 Point 02 Percent Maturing January 2, 2016 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Expiration Date	Jan. 2, 2016
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Net		2	2	(4)
Ineffective portion - Other income (expense), net		$ 0	$ 0	$ 0

Derivative Financial Instrum168

Derivative Financial Instruments (Schedule of Changes in Fair Value of Derivatives) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commodity [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	$ 7	$ 0	$ 0
Commodity [Member] | Cost of Sales [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	2	0	0
Foreign currency forwards and swaps
Derivative [Line Items]
Notional Value	508	502
Foreign currency forwards and swaps | Derivatives Not Designated as Hedges [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0	0	0
Foreign currency forwards and swaps | Foreign Currency Gain (Loss) [Member] | Derivatives Not Designated as Hedges [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	14	(82)	(15)
Interest rate swaps | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0	0	(1)
Interest rate swaps | Derivatives Not Designated as Hedges [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0	0	0
Interest rate swaps | Interest Expense [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	0	0	(4)
Interest rate swaps | Interest Expense [Member] | Derivatives Not Designated as Hedges [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	0	(1)	(3)
Cross-currency swaps | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0	0	(8)
Cross-currency swaps | Other Income [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Earnings (loss)	0	46	46
Notional Value			500
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	7	0	(9)
Gain (loss) recognized in Earnings (loss)	2	46	42
Derivatives Not Designated as Hedges [Member]
Derivative [Line Items]
Gain (loss) recognized in Other comprehensive income (loss)	0	0	0
Gain (loss) recognized in Earnings (loss)	14	(83)	(18)
Foreign Currency Denominated Debt [Member] | Net Investment Hedging [Member]
Derivative [Line Items]
Gain (Loss) On Non-Derivative Used In Net Investment Hedge	61	48	23
Amount of Ineffectiveness on Net Investment Hedges	0	0	0
Term C-2 and C-3 Loan Facilities [Member] | Net Investment Hedging [Member]
Derivative [Line Items]
Gain (Loss) On Non-Derivative Used In Net Investment Hedge	$ 61	$ 48	$ 23

Derivative Financial Instrum169

Derivative Financial Instruments (Schedule of Offsetting Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Derivative Asset [Abstract]
Gross amount recognized	$ 14	$ 2
Gross amount offset in the consolidated balance sheets	4	0
Net amount presented in the consolidated balance sheets	10	2
Gross amount not offset in the consolidated balance sheets	2	0
Net amount	$ 8	$ 2

Derivative Financial Instrum170

Derivative Financial Instruments (Schedule of Offsetting Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Derivative Liability [Abstract]
Gross amount recognized	$ 7	$ 2
Gross amount offset in the consolidated balance sheets	4	0
Net amount presented in the consolidated balance sheets	3	2
Gross amount not offset in the consolidated balance sheets	2	0
Net amount	$ 1	$ 2

Derivative Financial Instrum171

Derivative Financial Instruments (Narrative) (Details) € in Millions, $ in Millions	Mar. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Mar. 31, 2015EUR (€)
Derivative [Line Items]
Notional Value		$ 500
Swap Derivative 4 Point 27 Percent Maturing September 11, 2020 [Member]
Derivative [Line Items]
Notional Value	$ 250
Swap Derivative 1 Point 02 Percent Maturing January 2, 2016 [Member]
Derivative [Line Items]
Expiration Date		Jan. 2, 2016
Swap Derivative 2 Point 63 Percent Maturing September 11, 2020 [Member]
Derivative [Line Items]
Notional Value | €			€ 193
Swap Derivative 2 Point 77 Percent Maturing April 17, 2019 [Member]
Derivative [Line Items]
Notional Value	225
Swap Derivative 3 Point 62 Percent Maturing April 17, 2019 [Member]
Derivative [Line Items]
Notional Value | €			€ 162
Cross-currency swaps
Derivative [Line Items]
Derivative, Cash Received on Hedge	$ 88

Derivative Financial Instrum172

Derivative Financial Instruments Schedule of Notional Amounts of Net Investment Hedges (Details) - EUR (€) € in Millions	Dec. 31, 2016	Dec. 31, 2015
Net Investment Hedging [Member] | Foreign Currency Denominated Debt [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount of Nonderivative Instruments	€ 850	€ 328

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		$ 8	$ 2
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		10	2
Total liabilities		(3)	(2)
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		0	0
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		10	2
Total liabilities		(3)	(2)
Other Current Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Derivatives Not Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency forwards and swaps		(3)	(2)
Other Current Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Derivatives Not Designated as Hedges [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
Other Current Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Derivatives Not Designated as Hedges [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		(3)	(2)
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		5	0
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		0	0
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		5	0
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Derivatives Not Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency forwards and swaps		5	2
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Derivatives Not Designated as Hedges [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
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Derivatives Not Designated as Hedges [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
Net Investment Hedging [Member] | Foreign Currency Denominated Debt [Member] | Other Noncurrent Liabilities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency denominated debt	[1]	0	0
Net Investment Hedging [Member] | Foreign Currency Denominated Debt [Member] | Other Noncurrent Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency denominated debt	[1]	0	0
Net Investment Hedging [Member] | Foreign Currency Denominated Debt [Member] | Other Noncurrent Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency denominated debt	[1]	$ 0	$ 0
[1]	Included in the consolidated balance sheets at carrying amount.

Fair Value Measurements (Sch174

Fair Value Measurements (Schedule of Carrying Values and Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost investments, carrying amount	$ 155	$ 151
Cost investments, fair value	0	0
Insurance contracts in nonqualified pension trusts, carrying amount	49	55
Insurance contracts in nonqualified pension trusts, fair value	49	55
Long-term debt, including current installments of long-term debt, carrying amount	2,938	2,542
Long-term debt, including current installments of long-term debt, fair value	3,043	2,586
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 pension trusts, fair value	49	55
Long-term debt, including current installments of long-term debt, fair value	2,826	2,348
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 pension trusts, fair value	0	0
Long-term debt, including current installments of long-term debt, fair value	$ 217	$ 238

Commitments and Contingencies (

Commitments and Contingencies (Guarantees - Demerger and Divesture Obligations Narrative) (Details) € in Millions, $ in Millions	12 Months Ended	206 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016EUR (€)
Indemnification Agreements Hoechst [Member]
Loss Contingencies [Line Items]
Number of divestiture agreements	19	19	19
Indemnification floor amount | €			€ 250
Indemnification ceiling amount | €			€ 750
Indemnification percentage exceeding ceiling amount	33.33%	33.33%	33.33%
Loss contingency accrual, carrying value, payments | $		$ 75
Indemnification percentage, other	33.33%	33.33%	33.33%
Divestiture Agreements [Member]
Loss Contingencies [Line Items]
Divestiture obligations range, years	2,037
Guarantee obligations, maximum exposure | $	$ 123	$ 123

Commitments and Contingencie176

Commitments and Contingencies (Purchase Obligations Narrative) (Details) $ in Billions	12 Months Ended
	Dec. 31, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Term of unrecorded unconditional purchase obligations	Dec. 31, 2036
Unrecorded unconditional purchase obligations	$ 2.4

Supplemental Cash Flow Infor177

Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Information [Abstract]
Interest paid, net of amounts capitalized	$ 130	$ 120	$ 146
Taxes paid, net of refunds	129	151	199
Noncash Investing and Financing Activities
Accrued capital expenditures	1	(37)	3
Asset retirement obligations	2	3	4
Capital expenditure reimbursement	0	0	4
Capital lease obligations	0	6	22
Contingent consideration (Note 4)	0	0	8
Distribution to noncontrolling interest (Note 5)	0	(4)	0
Mitsui reimbursement	$ 0	$ 0	$ 70

Segment Information (Schedule o

Segment Information (Schedule of Business Segments) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales		$ 5,389	$ 5,674	$ 6,802
Other (charges) gains, net		(11)	(351)	15
Operating profit (loss)		893	326	758
Equity in net earnings (loss) of affiliates		155	181	246
Depreciation and amortization		290	357	292
Capital expenditures	[1]	247	483	681
Goodwill and intangible assets, net		990	830
Total assets		8,357	8,586
Increase (decrease) in accrued capital expenditures		1	(37)	3
Operating Segments [Member] | Advanced Engineered Materials [Member]
Segment Reporting Information [Line Items]
Net sales		1,444	1,326	1,459
Other (charges) gains, net		(2)	(7)	(1)
Operating profit (loss)		350	235	221
Equity in net earnings (loss) of affiliates		122	150	161
Depreciation and amortization		92	99	106
Capital expenditures		73	73	65
Goodwill and intangible assets, net		517	338
Total assets		2,792	2,324
Operating Segments [Member] | Consumer Specialties [Member]
Segment Reporting Information [Line Items]
Net sales	[2]	929	969	1,160
Other (charges) gains, net		(2)	(25)	16
Operating profit (loss)		302	262	388
Equity in net earnings (loss) of affiliates		3	2	9
Depreciation and amortization		45	60	43
Capital expenditures		38	65	103
Goodwill and intangible assets, net		244	249
Total assets		1,324	1,458
Operating Segments [Member] | Industrial Specialties [Member]
Segment Reporting Information [Line Items]
Net sales	[3]	979	1,082	1,224
Other (charges) gains, net		(3)	(10)	(1)
Operating profit (loss)		105	72	76
Equity in net earnings (loss) of affiliates		0	0	0
Depreciation and amortization		34	64	50
Capital expenditures		57	56	29
Goodwill and intangible assets, net		46	49
Total assets		758	747
Operating Segments [Member] | Acetyl Intermediates [Member]
Segment Reporting Information [Line Items]
Net sales	[4]	2,441	2,744	3,493
Other (charges) gains, net		(3)	(300)	(3)
Operating profit (loss)		340	(3)	558
Equity in net earnings (loss) of affiliates		6	6	20
Depreciation and amortization		107	123	81
Capital expenditures		67	282	478
Goodwill and intangible assets, net		183	194
Total assets		2,440	2,387
Corporate, Non-Segment [Member] | Other Activities [Member]
Segment Reporting Information [Line Items]
Net sales		0	0	0
Other (charges) gains, net		(1)	(9)	4
Operating profit (loss)		(205)	(240)	(485)
Equity in net earnings (loss) of affiliates		24	23	56
Depreciation and amortization		12	11	12
Capital expenditures		12	7	6
Goodwill and intangible assets, net		0	0
Total assets		1,043	1,670
Intersegment [Member]
Segment Reporting Information [Line Items]
Net sales		(404)	(447)	(534)
Other (charges) gains, net		0	0	0
Operating profit (loss)		1	0	0
Equity in net earnings (loss) of affiliates		0	0	0
Depreciation and amortization		0	0	0
Capital expenditures		0	0	0
Goodwill and intangible assets, net		0	0
Total assets		0	0
Intersegment [Member] | Consumer Specialties [Member]
Segment Reporting Information [Line Items]
Net sales		0	0	2
Intersegment [Member] | Industrial Specialties [Member]
Segment Reporting Information [Line Items]
Net sales		3	0	0
Intersegment [Member] | Acetyl Intermediates [Member]
Segment Reporting Information [Line Items]
Net sales		$ 401	$ 447	$ 532
[1]	Includes an increase in accrued capital expenditures of $1 million, a decrease of $37 million and an increase of $3 million for the years ended December 31, 2016, 2015 and 2014, respectively.
[2]	Includes intersegment sales of $0 million, $0 million and $2 million for the years ended December 31, 2016, 2015 and 2014, respectively.
[3]	Includes intersegment sales of $3 million, $0 million and $0 million for the years ended December 31, 2016, 2015 and 2014, respectively.
[4]	Includes intersegment sales of $401 million, $447 million and $532 million for the years ended December 31, 2016, 2015 and 2014, respectively.

Segment Information (Schedul179

Segment Information (Schedule of Geographical Segments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 5,389	$ 5,674	$ 6,802
Property, plant and equipment, net	3,577	3,609
BELGIUM
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	408	417	480
Property, plant and equipment, net	55	56
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	123	162	204
Property, plant and equipment, net	132	137
CHINA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	745	800	996
Property, plant and equipment, net	359	417
GERMANY
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,540	1,779	2,156
Property, plant and equipment, net	868	931
MEXICO
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	214	204	259
Property, plant and equipment, net	159	156
SINGAPORE
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	758	703	632
Property, plant and equipment, net	90	68
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,451	1,463	1,899
Property, plant and equipment, net	1,798	1,774
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	150	146	$ 176
Property, plant and equipment, net	$ 116	$ 70

Earnings (Loss) Per Share (Sche

Earnings (Loss) Per Share (Schedule of Earnings (Loss) Per Share) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations		$ 902	$ 306	$ 631
Earnings (loss) from discontinued operations		(2)	(2)	(7)
Net earnings (loss)		$ 900	$ 304	$ 624
Weighted average shares - basic		144,939,433	150,838,050	155,012,370
Incremental shares attributable to equity awards	[1]	728,748	1,449,905	1,154,623
Weighted average shares - diluted		145,668,181	152,287,955	156,166,993
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		836	2,903	0
[1]	Excludes 836, 2,903 and 0 equity award shares for the years ended December 31, 2016, 2015 and 2014, respectively, as their effect would have been antidilutive.

Consolidating Guarantor Fina181

Consolidating Guarantor Financial Information (Schedule of Consolidating Statements of Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 5,389	$ 5,674	$ 6,802
Cost of sales	(3,984)	(4,356)	(5,186)
Gross profit	1,405	1,318	1,616
Selling, general and administrative expenses	(416)	(506)	(758)
Amortization of intangible assets	(9)	(11)	(20)
Research and development expenses	(78)	(119)	(86)
Other (charges) gains, net	(11)	(351)	15
Foreign exchange gain (loss), net	(1)	4	(2)
Gain (loss) on disposition of businesses and assets, net	3	(9)	(7)
Operating profit (loss)	893	326	758
Equity in net earnings (loss) of affiliates	155	181	246
Interest expense	(120)	(119)	(147)
Refinancing expense	(6)	0	(29)
Interest income	2	1	1
Dividend income - cost investments	108	107	116
Other income (expense), net	(2)	(8)	(4)
Earnings (loss) from continuing operations before tax	1,030	488	941
Income tax (provision) benefit	(122)	(201)	(314)
Earnings (loss) from continuing operations	908	287	627
Earnings (loss) from operation of discontinued operations	(3)	(3)	(11)
Gain (loss) on disposition of discontinued operations	0	0	0
Income tax (provision) benefit from discontinued operations	1	1	4
Earnings (loss) from discontinued operations	(2)	(2)	(7)
Net earnings (loss)	906	285	620
Net (earnings) loss attributable to noncontrolling interests	(6)	19	4
Net earnings (loss) attributable to Celanese Corporation	900	304	624
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0	0
Cost of sales	0	0	0
Gross profit	0	0	0
Selling, general and administrative expenses	0	0	0
Amortization of intangible assets	0	0	0
Research and development expenses	0	0	0
Other (charges) gains, net	0	0	0
Foreign exchange gain (loss), net	0	0	0
Gain (loss) on disposition of businesses and assets, net	0	0	0
Operating profit (loss)	0	0	0
Equity in net earnings (loss) of affiliates	898	302	622
Interest expense	0	0	0
Refinancing expense	0	0	0
Interest income	0	0	0
Dividend income - cost investments	0	0	0
Other income (expense), net	0	0	0
Earnings (loss) from continuing operations before tax	898	302	622
Income tax (provision) benefit	2	2	2
Earnings (loss) from continuing operations	900	304	624
Earnings (loss) from operation of discontinued operations	0	0	0
Gain (loss) on disposition of discontinued operations	0	0	0
Income tax (provision) benefit from discontinued operations	0	0	0
Earnings (loss) from discontinued operations	0	0	0
Net earnings (loss)	900	304	624
Net (earnings) loss attributable to noncontrolling interests	0	0	0
Net earnings (loss) attributable to Celanese Corporation	900	304	624
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0	0
Cost of sales	0	0	0
Gross profit	0	0	0
Selling, general and administrative expenses	0	0	0
Amortization of intangible assets	0	0	0
Research and development expenses	0	0	0
Other (charges) gains, net	0	0	0
Foreign exchange gain (loss), net	0	0	0
Gain (loss) on disposition of businesses and assets, net	0	0	0
Operating profit (loss)	0	0	0
Equity in net earnings (loss) of affiliates	939	314	806
Interest expense	(16)	(77)	(190)
Refinancing expense	(4)	0	(29)
Interest income	12	18	57
Dividend income - cost investments	0	0	0
Other income (expense), net	(1)	(2)	0
Earnings (loss) from continuing operations before tax	930	253	644
Income tax (provision) benefit	(32)	49	(22)
Earnings (loss) from continuing operations	898	302	622
Earnings (loss) from operation of discontinued operations	0	0	0
Gain (loss) on disposition of discontinued operations	0	0	0
Income tax (provision) benefit from discontinued operations	0	0	0
Earnings (loss) from discontinued operations	0	0	0
Net earnings (loss)	898	302	622
Net (earnings) loss attributable to noncontrolling interests	0	0	0
Net earnings (loss) attributable to Celanese Corporation	898	302	622
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	2,162	2,410	2,860
Cost of sales	(1,657)	(1,729)	(1,822)
Gross profit	505	681	1,038
Selling, general and administrative expenses	(112)	(242)	(313)
Amortization of intangible assets	(5)	(5)	(7)
Research and development expenses	(32)	(78)	(47)
Other (charges) gains, net	0	(5)	28
Foreign exchange gain (loss), net	0	0	0
Gain (loss) on disposition of businesses and assets, net	(8)	(6)	(11)
Operating profit (loss)	348	345	688
Equity in net earnings (loss) of affiliates	653	84	90
Interest expense	(94)	(76)	(22)
Refinancing expense	(2)	0	0
Interest income	4	40	72
Dividend income - cost investments	0	0	0
Other income (expense), net	1	2	4
Earnings (loss) from continuing operations before tax	910	395	832
Income tax (provision) benefit	(53)	(133)	(237)
Earnings (loss) from continuing operations	857	262	595
Earnings (loss) from operation of discontinued operations	(2)	(3)	(8)
Gain (loss) on disposition of discontinued operations	0	0	0
Income tax (provision) benefit from discontinued operations	0	1	3
Earnings (loss) from discontinued operations	(2)	(2)	(5)
Net earnings (loss)	855	260	590
Net (earnings) loss attributable to noncontrolling interests	0	0	0
Net earnings (loss) attributable to Celanese Corporation	855	260	590
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	4,322	4,485	5,166
Cost of sales	(3,428)	(3,897)	(4,550)
Gross profit	894	588	616
Selling, general and administrative expenses	(304)	(264)	(445)
Amortization of intangible assets	(4)	(6)	(13)
Research and development expenses	(46)	(41)	(39)
Other (charges) gains, net	(11)	(346)	(13)
Foreign exchange gain (loss), net	(1)	4	(2)
Gain (loss) on disposition of businesses and assets, net	17	(3)	4
Operating profit (loss)	545	(68)	108
Equity in net earnings (loss) of affiliates	146	162	210
Interest expense	(29)	(36)	(78)
Refinancing expense	0	0	0
Interest income	5	13	15
Dividend income - cost investments	107	107	116
Other income (expense), net	(2)	(8)	(8)
Earnings (loss) from continuing operations before tax	772	170	363
Income tax (provision) benefit	(36)	(98)	(71)
Earnings (loss) from continuing operations	736	72	292
Earnings (loss) from operation of discontinued operations	(1)	0	(3)
Gain (loss) on disposition of discontinued operations	0	0	0
Income tax (provision) benefit from discontinued operations	1	0	1
Earnings (loss) from discontinued operations	0	0	(2)
Net earnings (loss)	736	72	290
Net (earnings) loss attributable to noncontrolling interests	(6)	19	4
Net earnings (loss) attributable to Celanese Corporation	730	91	294
Consolidation Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	(1,095)	(1,221)	(1,224)
Cost of sales	1,101	1,270	1,186
Gross profit	6	49	(38)
Selling, general and administrative expenses	0	0	0
Amortization of intangible assets	0	0	0
Research and development expenses	0	0	0
Other (charges) gains, net	0	0	0
Foreign exchange gain (loss), net	0	0	0
Gain (loss) on disposition of businesses and assets, net	(6)	0	0
Operating profit (loss)	0	49	(38)
Equity in net earnings (loss) of affiliates	(2,481)	(681)	(1,482)
Interest expense	19	70	143
Refinancing expense	0	0	0
Interest income	(19)	(70)	(143)
Dividend income - cost investments	1	0	0
Other income (expense), net	0	0	0
Earnings (loss) from continuing operations before tax	(2,480)	(632)	(1,520)
Income tax (provision) benefit	(3)	(21)	14
Earnings (loss) from continuing operations	(2,483)	(653)	(1,506)
Earnings (loss) from operation of discontinued operations	0	0	0
Gain (loss) on disposition of discontinued operations	0	0	0
Income tax (provision) benefit from discontinued operations	0	0	0
Earnings (loss) from discontinued operations	0	0	0
Net earnings (loss)	(2,483)	(653)	(1,506)
Net (earnings) loss attributable to noncontrolling interests	0	0	0
Net earnings (loss) attributable to Celanese Corporation	$ (2,483)	$ (653)	$ (1,506)

Consolidating Guarantor Fina182

Consolidating Guarantor Financial Information (Schedule of Consolidating Statements of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	$ 906	$ 285	$ 620
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0	1
Foreign currency translation	(11)	(188)	(148)
Gain (loss) on cash flow hedges	5	2	40
Pension and postretirement benefits	(4)	3	(54)
Total other comprehensive income (loss), net of tax	(10)	(183)	(161)
Total comprehensive income (loss), net of tax	896	102	459
Comprehensive (income) loss attributable to noncontrolling interests	(6)	19	4
Comprehensive income (loss) attributable to Celanese Corporation	890	121	463
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	900	304	624
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0	1
Foreign currency translation	(11)	(188)	(148)
Gain (loss) on cash flow hedges	5	2	40
Pension and postretirement benefits	(4)	3	(54)
Total other comprehensive income (loss), net of tax	(10)	(183)	(161)
Total comprehensive income (loss), net of tax	890	121	463
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	890	121	463
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	898	302	622
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0	1
Foreign currency translation	(11)	(188)	(148)
Gain (loss) on cash flow hedges	5	2	40
Pension and postretirement benefits	(4)	3	(54)
Total other comprehensive income (loss), net of tax	(10)	(183)	(161)
Total comprehensive income (loss), net of tax	888	119	461
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	888	119	461
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	855	260	590
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0	1
Foreign currency translation	(65)	(181)	(31)
Gain (loss) on cash flow hedges	5	5	(1)
Pension and postretirement benefits	(4)	3	(54)
Total other comprehensive income (loss), net of tax	(64)	(173)	(85)
Total comprehensive income (loss), net of tax	791	87	505
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	791	87	505
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	736	72	290
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0	1
Foreign currency translation	(73)	(231)	(65)
Gain (loss) on cash flow hedges	5	1	(7)
Pension and postretirement benefits	(2)	2	(5)
Total other comprehensive income (loss), net of tax	(70)	(228)	(76)
Total comprehensive income (loss), net of tax	666	(156)	214
Comprehensive (income) loss attributable to noncontrolling interests	(6)	19	4
Comprehensive income (loss) attributable to Celanese Corporation	660	(137)	218
Consolidation Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	(2,483)	(653)	(1,506)
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	0	(3)
Foreign currency translation	149	600	244
Gain (loss) on cash flow hedges	(15)	(8)	(32)
Pension and postretirement benefits	10	(8)	113
Total other comprehensive income (loss), net of tax	144	584	322
Total comprehensive income (loss), net of tax	(2,339)	(69)	(1,184)
Comprehensive (income) loss attributable to noncontrolling interests	0	0	0
Comprehensive income (loss) attributable to Celanese Corporation	$ (2,339)	$ (69)	$ (1,184)

Consolidating Guarantor Fina183

Consolidating Guarantor Financial Information (Schedule of Consolidating Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 638		$ 967	$ 780	$ 984
Trade receivables - third party and affiliates	801		706
Non-trade receivables, net	223		285
Inventories, net	720		682
Deferred income taxes	0		68
Marketable securities, at fair value	30		30
Other assets	60		49
Total current assets	2,472		2,787
Investments in affiliates	852		838
Property, plant and equipment, net	3,577		3,609
Deferred income taxes	159		222
Other assets	307		300
Goodwill	796	[1]	705	749
Intangible assets, net	194		125
Total assets	8,357		8,586
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	118		513
Trade payables - third party and affiliates	625		587
Other liabilities	322		330
Deferred income taxes	0		30
Income taxes payable	12		90
Total current liabilities	1,077		1,550
Noncurrent Liabilities
Long-term debt, net of unamortized deferred financing costs	2,890		2,468
Deferred income taxes	130		136
Uncertain tax positions	131		167
Benefit obligations	893		1,189
Other liabilities	215		247
Total noncurrent liabilities	4,259		4,207
Total Celanese Corporation stockholders' equity	2,588		2,378	2,818
Noncontrolling interests	433		451
Total equity	3,021		2,829	3,078
Total liabilities and equity	8,357		8,586
Parent Guarantor [Member]
Current Assets
Cash and cash equivalents	0		0	0	0
Trade receivables - third party and affiliates	0		0
Non-trade receivables, net	40		37
Inventories, net	0		0
Deferred income taxes	0		0
Marketable securities, at fair value	0		0
Other assets	0		0
Total current assets	40		37
Investments in affiliates	2,548		2,341
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	2,588		2,378
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, net of unamortized deferred financing costs	0		0
Deferred income taxes	0		0
Uncertain tax positions	0		0
Benefit obligations	0		0
Other liabilities	0		0
Total noncurrent liabilities	0		0
Total Celanese Corporation stockholders' equity	2,588		2,378
Noncontrolling interests	0		0
Total equity	2,588		2,378
Total liabilities and equity	2,588		2,378
Issuer [Member]
Current Assets
Cash and cash equivalents	0		0	0	0
Trade receivables - third party and affiliates	0		0
Non-trade receivables, net	499		580
Inventories, net	0		0
Deferred income taxes	0		0
Marketable securities, at fair value	0		0
Other assets	42		12
Total current assets	541		592
Investments in affiliates	4,029		3,947
Property, plant and equipment, net	0		0
Deferred income taxes	0		2
Other assets	705		418
Goodwill	0		0
Intangible assets, net	0		0
Total assets	5,275		4,959
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	6		479
Trade payables - third party and affiliates	0		0
Other liabilities	58		28
Deferred income taxes	0		26
Income taxes payable	0		0
Total current liabilities	64		533
Noncurrent Liabilities
Long-term debt, net of unamortized deferred financing costs	2,647		2,078
Deferred income taxes	16		0
Uncertain tax positions	0		7
Benefit obligations	0		0
Other liabilities	0		0
Total noncurrent liabilities	2,663		2,085
Total Celanese Corporation stockholders' equity	2,548		2,341
Noncontrolling interests	0		0
Total equity	2,548		2,341
Total liabilities and equity	5,275		4,959
Subsidiary Guarantors [Member]
Current Assets
Cash and cash equivalents	51		21	110	284
Trade receivables - third party and affiliates	107		132
Non-trade receivables, net	249		298
Inventories, net	239		258
Deferred income taxes	0		19
Marketable securities, at fair value	30		30
Other assets	25		28
Total current assets	701		786
Investments in affiliates	3,655		3,909
Property, plant and equipment, net	1,049		1,001
Deferred income taxes	91		178
Other assets	133		151
Goodwill	314		314
Intangible assets, net	48		51
Total assets	5,991		6,390
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	133		181
Trade payables - third party and affiliates	226		240
Other liabilities	167		281
Deferred income taxes	0		0
Income taxes payable	454		537
Total current liabilities	980		1,239
Noncurrent Liabilities
Long-term debt, net of unamortized deferred financing costs	727		706
Deferred income taxes	0		0
Uncertain tax positions	3		29
Benefit obligations	636		960
Other liabilities	74		93
Total noncurrent liabilities	1,440		1,788
Total Celanese Corporation stockholders' equity	3,571		3,363
Noncontrolling interests	0		0
Total equity	3,571		3,363
Total liabilities and equity	5,991		6,390
Non-Guarantors [Member]
Current Assets
Cash and cash equivalents	587		946	670	700
Trade receivables - third party and affiliates	819		722
Non-trade receivables, net	308		522
Inventories, net	526		474
Deferred income taxes	0		68
Marketable securities, at fair value	0		0
Other assets	76		40
Total current assets	2,316		2,772
Investments in affiliates	752		738
Property, plant and equipment, net	2,528		2,608
Deferred income taxes	86		42
Other assets	156		227
Goodwill	482		391
Intangible assets, net	146		74
Total assets	6,466		6,852
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	250		213
Trade payables - third party and affiliates	524		495
Other liabilities	262		283
Deferred income taxes	0		23
Income taxes payable	75		116
Total current liabilities	1,111		1,130
Noncurrent Liabilities
Long-term debt, net of unamortized deferred financing costs	210		187
Deferred income taxes	132		136
Uncertain tax positions	130		131
Benefit obligations	257		229
Other liabilities	142		155
Total noncurrent liabilities	871		838
Total Celanese Corporation stockholders' equity	4,051		4,433
Noncontrolling interests	433		451
Total equity	4,484		4,884
Total liabilities and equity	6,466		6,852
Consolidation Eliminations [Member]
Current Assets
Cash and cash equivalents	0		0	$ 0	$ 0
Trade receivables - third party and affiliates	(125)		(148)
Non-trade receivables, net	(873)		(1,152)
Inventories, net	(45)		(50)
Deferred income taxes	0		(19)
Marketable securities, at fair value	0		0
Other assets	(83)		(31)
Total current assets	(1,126)		(1,400)
Investments in affiliates	(10,132)		(10,097)
Property, plant and equipment, net	0		0
Deferred income taxes	(18)		0
Other assets	(687)		(496)
Goodwill	0		0
Intangible assets, net	0		0
Total assets	(11,963)		(11,993)
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	(271)		(360)
Trade payables - third party and affiliates	(125)		(148)
Other liabilities	(165)		(262)
Deferred income taxes	0		(19)
Income taxes payable	(517)		(563)
Total current liabilities	(1,078)		(1,352)
Noncurrent Liabilities
Long-term debt, net of unamortized deferred financing costs	(694)		(503)
Deferred income taxes	(18)		0
Uncertain tax positions	(2)		0
Benefit obligations	0		0
Other liabilities	(1)		(1)
Total noncurrent liabilities	(715)		(504)
Total Celanese Corporation stockholders' equity	(10,170)		(10,137)
Noncontrolling interests	0		0
Total equity	(10,170)		(10,137)
Total liabilities and equity	$ (11,963)		$ (11,993)
[1]	There were $0 million of accumulated impairment losses as of December 31, 2016.

Consolidating Guarantor Fina184

Consolidating Guarantor Financial Information (Schedule of Consolidating Cash Flow Statements) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 893	$ 862	$ 962
Investing Activities
Capital expenditures on property, plant and equipment	(246)	(232)	(254)
Acquisitions, net of cash acquired	(178)	(6)	(10)
Proceeds from sale of businesses and assets, net	12	4	0
Capital expenditures related to Fairway Methanol LLC	0	(288)	(424)
Return of capital from subsidiary	0	0	0
Contributions to subsidiary	0	0	0
Intercompany loan receipts (disbursements)	0	0	0
Other, net	(27)	(36)	(17)
Net cash provided by (used in) investing activities	(439)	(558)	(705)
Financing Activities
Short-term borrowings (repayments), net	(352)	350	(9)
Proceeds from short-term borrowings	53	80	62
Repayments of short-term borrowings	(90)	(83)	(91)
Proceeds from long-term debt	1,509	0	387
Repayments of long-term debt	(1,127)	(24)	(626)
Purchases of treasury stock, including related fees	(500)	(420)	(250)
Dividends to parent	0	0	0
Contributions from parent	0	0	0
Stock option exercises	6	3	5
Series A common stock dividends	(201)	(174)	(144)
Return of capital to parent	0	0	0
(Distributions to) contributions from noncontrolling interests	(24)	214	264
Other, net	(33)	(12)	(13)
Net cash provided by (used in) financing activities	(759)	(66)	(415)
Exchange rate effects on cash and cash equivalents	(24)	(51)	(46)
Net increase (decrease) in cash and cash equivalents	(329)	187	(204)
Cash and cash equivalents as of beginning of period	967	780	984
Cash and cash equivalents as of end of period	638	967	780
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	695	591	389
Investing Activities
Capital expenditures on property, plant and equipment	0	0	0
Acquisitions, net of cash acquired	0	0	0
Proceeds from sale of businesses and assets, net	0	0	0
Capital expenditures related to Fairway Methanol LLC	0	0	0
Return of capital from subsidiary	0	0	0
Contributions to subsidiary	0	0	0
Intercompany loan receipts (disbursements)	0	0	0
Other, net	0	0	0
Net cash provided by (used in) investing activities	0	0	0
Financing Activities
Short-term borrowings (repayments), net	0	0	0
Proceeds from short-term borrowings	0	0	0
Repayments of short-term borrowings	0	0	0
Proceeds from long-term debt	0	0	0
Repayments of long-term debt	0	0	0
Purchases of treasury stock, including related fees	(500)	(420)	(250)
Dividends to parent	0	0	0
Contributions from parent	0	0	0
Stock option exercises	6	3	5
Series A common stock dividends	(201)	(174)	(144)
Return of capital to parent	0	0	0
(Distributions to) contributions from noncontrolling interests	0	0	0
Other, net	0	0	0
Net cash provided by (used in) financing activities	(695)	(591)	(389)
Exchange rate effects on cash and cash equivalents	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents as of beginning of period	0	0	0
Cash and cash equivalents as of end of period	0	0	0
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	711	536	498
Investing Activities
Capital expenditures on property, plant and equipment	0	0	0
Acquisitions, net of cash acquired	0	0	0
Proceeds from sale of businesses and assets, net	0	0	0
Capital expenditures related to Fairway Methanol LLC	0	0	0
Return of capital from subsidiary	145	0	28
Contributions to subsidiary	0	0	0
Intercompany loan receipts (disbursements)	(283)	(333)	(70)
Other, net	0	0	0
Net cash provided by (used in) investing activities	(138)	(333)	(42)
Financing Activities
Short-term borrowings (repayments), net	(371)	383	93
Proceeds from short-term borrowings	0	0	0
Repayments of short-term borrowings	0	0	0
Proceeds from long-term debt	1,589	15	462
Repayments of long-term debt	(1,083)	(9)	(611)
Purchases of treasury stock, including related fees	0	0	0
Dividends to parent	(695)	(592)	(390)
Contributions from parent	0	0	0
Stock option exercises	0	0	0
Series A common stock dividends	0	0	0
Return of capital to parent	0	0	0
(Distributions to) contributions from noncontrolling interests	0	0	0
Other, net	(13)	0	(10)
Net cash provided by (used in) financing activities	(573)	(203)	(456)
Exchange rate effects on cash and cash equivalents	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents as of beginning of period	0	0	0
Cash and cash equivalents as of end of period	0	0	0
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(21)	529	644
Investing Activities
Capital expenditures on property, plant and equipment	(139)	(128)	(183)
Acquisitions, net of cash acquired	0	(3)	(10)
Proceeds from sale of businesses and assets, net	1	0	0
Capital expenditures related to Fairway Methanol LLC	0	(20)	(44)
Return of capital from subsidiary	758	0	51
Contributions to subsidiary	0	(120)	(213)
Intercompany loan receipts (disbursements)	19	(33)	(93)
Other, net	(10)	(12)	(9)
Net cash provided by (used in) investing activities	629	(316)	(501)
Financing Activities
Short-term borrowings (repayments), net	1	0	6
Proceeds from short-term borrowings	0	0	0
Repayments of short-term borrowings	0	0	0
Proceeds from long-term debt	746	406	75
Repayments of long-term debt	(635)	(74)	(5)
Purchases of treasury stock, including related fees	0	0	0
Dividends to parent	(669)	(624)	(390)
Contributions from parent	0	0	0
Stock option exercises	0	0	0
Series A common stock dividends	0	0	0
Return of capital to parent	0	0	0
(Distributions to) contributions from noncontrolling interests	0	0	0
Other, net	(21)	(10)	(3)
Net cash provided by (used in) financing activities	(578)	(302)	(317)
Exchange rate effects on cash and cash equivalents	0	0	0
Net increase (decrease) in cash and cash equivalents	30	(89)	(174)
Cash and cash equivalents as of beginning of period	21	110	284
Cash and cash equivalents as of end of period	51	21	110
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	872	422	433
Investing Activities
Capital expenditures on property, plant and equipment	(107)	(104)	(71)
Acquisitions, net of cash acquired	(178)	(3)	0
Proceeds from sale of businesses and assets, net	11	4	0
Capital expenditures related to Fairway Methanol LLC	0	(268)	(380)
Return of capital from subsidiary	0	0	0
Contributions to subsidiary	0	0	0
Intercompany loan receipts (disbursements)	90	(15)	(75)
Other, net	(17)	(24)	(8)
Net cash provided by (used in) investing activities	(201)	(410)	(534)
Financing Activities
Short-term borrowings (repayments), net	(1)	0	(15)
Proceeds from short-term borrowings	53	80	62
Repayments of short-term borrowings	(90)	(83)	(91)
Proceeds from long-term debt	0	0	0
Repayments of long-term debt	(42)	(14)	(15)
Purchases of treasury stock, including related fees	0	0	0
Dividends to parent	0	0	(222)
Contributions from parent	0	120	213
Stock option exercises	0	0	0
Series A common stock dividends	0	0	0
Return of capital to parent	(903)	0	(79)
(Distributions to) contributions from noncontrolling interests	(24)	214	264
Other, net	1	(2)	0
Net cash provided by (used in) financing activities	(1,006)	315	117
Exchange rate effects on cash and cash equivalents	(24)	(51)	(46)
Net increase (decrease) in cash and cash equivalents	(359)	276	(30)
Cash and cash equivalents as of beginning of period	946	670	700
Cash and cash equivalents as of end of period	587	946	670
Consolidation Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(1,364)	(1,216)	(1,002)
Investing Activities
Capital expenditures on property, plant and equipment	0	0	0
Acquisitions, net of cash acquired	0	0	0
Proceeds from sale of businesses and assets, net	0	0	0
Capital expenditures related to Fairway Methanol LLC	0	0	0
Return of capital from subsidiary	(903)	0	(79)
Contributions to subsidiary	0	120	213
Intercompany loan receipts (disbursements)	174	381	238
Other, net	0	0	0
Net cash provided by (used in) investing activities	(729)	501	372
Financing Activities
Short-term borrowings (repayments), net	19	(33)	(93)
Proceeds from short-term borrowings	0	0	0
Repayments of short-term borrowings	0	0	0
Proceeds from long-term debt	(826)	(421)	(150)
Repayments of long-term debt	633	73	5
Purchases of treasury stock, including related fees	0	0	0
Dividends to parent	1,364	1,216	1,002
Contributions from parent	0	(120)	(213)
Stock option exercises	0	0	0
Series A common stock dividends	0	0	0
Return of capital to parent	903	0	79
(Distributions to) contributions from noncontrolling interests	0	0	0
Other, net	0	0	0
Net cash provided by (used in) financing activities	2,093	715	630
Exchange rate effects on cash and cash equivalents	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents as of beginning of period	0	0	0
Cash and cash equivalents as of end of period	$ 0	$ 0	$ 0

Consolidating Guarantor Fina185

Consolidating Guarantor Financial Information (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Consolidating Guarantor Financial Information [Abstract]
Issuer and subsidiary guarantors, ownership percentage	100.00%
Interest Allocated To Subsidiary Guarantor		$ 54