Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents (variable interest entity restricted - 2014: $44)	$ 1,064	$ 984
Trade receivables - third party and affiliates (net of allowance for doubtful accounts - 2014: $9; 2013: $9)	1,045	867
Non-trade receivables, net	231	343
Inventories	816	804
Deferred income taxes	115	115
Marketable securities, at fair value	39	41
Other assets	29	28
Total current assets	3,339	3,182
Investments in affiliates	880	841
Property, plant and equipment (net of accumulated depreciation - 2014: $1,770; 2013: $1,672; variable interest entity restricted - 2014: $252)	3,577	3,425
Deferred income taxes	271	289
Other assets (variable interest entity restricted - 2014: $24)	332	341
Goodwill	794	798
Intangible assets, net	140	142
Total assets	9,333	9,018
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	158	177
Trade payables - third party and affiliates	839	799
Other liabilities	472	541
Deferred income taxes	10	10
Income taxes payable	64	18
Total current liabilities	1,543	1,545
Long-term debt	2,880	2,887
Deferred income taxes	228	225
Uncertain tax positions	158	200
Benefit obligations	1,125	1,175
Other liabilities	298	287
Commitments and contingencies
Stockholders' Equity
Preferred stock, $0.01 par value, 100,000,000 shares authorized (2014 and 2013: 0 issued and outstanding)	0	0
Treasury stock, at cost (2014: 10,798,434 shares; 2013: 8,928,137 shares)	(464)	(361)
Additional paid-in capital	73	53
Retained earnings	3,399	3,011
Accumulated other comprehensive income (loss), net	(53)	(4)
Total Celanese Corporation stockholders' equity	2,955	2,699
Noncontrolling interests	146	0
Total equity	3,101	2,699
Total liabilities and equity	9,333	9,018
Series A common stock, $0.0001 par value, 400,000,000 shares authorized (2014: 166,038,983 issued and 155,240,549 outstanding; 2013: 165,867,965 issued and 156,939,828 outstanding) [Member]
Stockholders' Equity
Common stock	0	0
Series B common stock, $0.0001 par value, 100,000,000 shares authorized (2014 and 2013: 0 issued and outstanding) [Member]
Stockholders' Equity
Common stock	$ 0	$ 0