Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 1,100	$ 959
Trade receivables - third party and affiliates (net of allowance for doubtful accounts - 2013: $11; 2012: $9)	949	827
Non-trade receivables, net	293	209
Inventories	753	711
Deferred income taxes	50	49
Marketable securities, at fair value	44	53
Other assets	39	31
Total current assets	3,228	2,839
Investments in affiliates	857	800
Property, plant and equipment (net of accumulated depreciation - 2013: $1,665; 2012: $1,506)	3,391	3,350
Deferred income taxes	604	606
Other assets	498	463
Goodwill	787	777
Intangible assets, net	147	165
Total assets	9,512	9,000
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	224	168
Trade payables - third party and affiliates	739	649
Other liabilities	457	475
Deferred income taxes	25	25
Income taxes payable	152	38
Total current liabilities	1,597	1,355
Long-term debt	2,870	2,930
Deferred income taxes	61	50
Uncertain tax positions	203	181
Benefit obligations	1,546	1,602
Other liabilities	1,151	1,152
Commitments and contingencies
Stockholders' Equity
Preferred stock, $0.01 par value, 100,000,000 shares authorized (2013 and 2012: 0 issued and outstanding)	0	0
Treasury stock, at cost (2013: 26,089,177 shares; 2012: 23,986,836 shares)	(1,007)	(905)
Additional paid-in capital	753	731
Retained earnings	2,385	1,993	[1]
Accumulated other comprehensive income (loss), net	(47)	(89)	[1]
Total Celanese Corporation stockholders' equity	2,084	1,730
Noncontrolling interests	0	0
Total equity	2,084	1,730
Total liabilities and equity	9,512	9,000
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2013: 183,781,497 issued and 157,692,320 outstanding; 2012: 183,629,237 issued and 159,642,401 outstanding) [Member]
Stockholders' Equity
Common stock	0	0
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2013 and 2012: 0 issued and outstanding) [Member]
Stockholders' Equity
Common stock	$ 0	$ 0

[1] As Adjusted (Note 1)