Consolidating Guarantor Financial Information (Schedule of Consolidating Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 1,064	$ 984	$ 1,107	$ 959
Trade receivables - third party and affiliates	1,045	867
Non-trade receivables, net	231	343
Inventories, net	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	3,577	3,425
Deferred income taxes	271	289
Other assets	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
Noncurrent Liabilities
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
Total noncurrent liabilities	4,689	4,774
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
Parent Guarantor [Member]
Current Assets
Cash and cash equivalents	2	0	0	10
Trade receivables - third party and affiliates	0	0
Non-trade receivables, net	34	33
Inventories, net	0	0
Deferred income taxes	0	0
Marketable securities, at fair value	0	0
Other assets	0	0
Total current assets	36	33
Investments in affiliates	2,920	2,667
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	2,956	2,700
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	0	0
Trade payables - third party and affiliates	0	0
Other liabilities	1	1
Deferred income taxes	0	0
Income taxes payable	0	0
Total current liabilities	1	1
Noncurrent Liabilities
Long-term debt	0	0
Deferred income taxes	0	0
Uncertain tax positions	0	0
Benefit obligations	0	0
Other liabilities	0	0
Total noncurrent liabilities	0	0
Total Celanese Corporation stockholders' equity	2,955	2,699
Noncontrolling interests	0	0
Total equity	2,955	2,699
Total liabilities and equity	2,956	2,700
Issuer [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Trade receivables - third party and affiliates	0	0
Non-trade receivables, net	469	482
Inventories, net	0	0
Deferred income taxes	0	0
Marketable securities, at fair value	0	0
Other assets	2	5
Total current assets	471	487
Investments in affiliates	4,781	4,458
Property, plant and equipment, net	0	0
Deferred income taxes	0	0
Other assets	1,989	1,965
Goodwill	0	0
Intangible assets, net	0	0
Total assets	7,241	6,910
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	1,790	1,713
Trade payables - third party and affiliates	0	0
Other liabilities	30	28
Deferred income taxes	17	17
Income taxes payable	0	0
Total current liabilities	1,837	1,758
Noncurrent Liabilities
Long-term debt	2,461	2,468
Deferred income taxes	8	8
Uncertain tax positions	6	6
Benefit obligations	0	0
Other liabilities	9	3
Total noncurrent liabilities	2,484	2,485
Total Celanese Corporation stockholders' equity	2,920	2,667
Noncontrolling interests	0	0
Total equity	2,920	2,667
Total liabilities and equity	7,241	6,910
Subsidiary Guarantors [Member]
Current Assets
Cash and cash equivalents	208	284	401	275
Trade receivables - third party and affiliates	139	131
Non-trade receivables, net	2,160	2,166
Inventories, net	243	243
Deferred income taxes	75	74
Marketable securities, at fair value	39	41
Other assets	17	15
Total current assets	2,881	2,954
Investments in affiliates	1,910	1,677
Property, plant and equipment, net	964	969
Deferred income taxes	248	248
Other assets	141	144
Goodwill	305	305
Intangible assets, net	69	64
Total assets	6,518	6,361
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	188	122
Trade payables - third party and affiliates	346	312
Other liabilities	315	441
Deferred income taxes	0	0
Income taxes payable	492	460
Total current liabilities	1,341	1,335
Noncurrent Liabilities
Long-term debt	832	825
Deferred income taxes	0	0
Uncertain tax positions	7	16
Benefit obligations	900	943
Other liabilities	118	91
Total noncurrent liabilities	1,857	1,875
Total Celanese Corporation stockholders' equity	3,320	3,151
Noncontrolling interests	0	0
Total equity	3,320	3,151
Total liabilities and equity	6,518	6,361
Non-Guarantors [Member]
Current Assets
Cash and cash equivalents	854	700	706	674
Trade receivables - third party and affiliates	1,064	877
Non-trade receivables, net	507	586
Inventories, net	629	622
Deferred income taxes	57	58
Marketable securities, at fair value	0	0
Other assets	22	24
Total current assets	3,133	2,867
Investments in affiliates	609	594
Property, plant and equipment, net	2,613	2,456
Deferred income taxes	25	49
Other assets	303	285
Goodwill	489	493
Intangible assets, net	71	78
Total assets	7,243	6,822
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	343	373
Trade payables - third party and affiliates	651	628
Other liabilities	438	513
Deferred income taxes	10	10
Income taxes payable	55	32
Total current liabilities	1,497	1,556
Noncurrent Liabilities
Long-term debt	1,657	1,646
Deferred income taxes	222	225
Uncertain tax positions	145	178
Benefit obligations	225	232
Other liabilities	210	202
Total noncurrent liabilities	2,459	2,483
Total Celanese Corporation stockholders' equity	3,141	2,783
Noncontrolling interests	146	0
Total equity	3,287	2,783
Total liabilities and equity	7,243	6,822
Eliminations [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Trade receivables - third party and affiliates	(158)	(141)
Non-trade receivables, net	(2,939)	(2,924)
Inventories, net	(56)	(61)
Deferred income taxes	(17)	(17)
Marketable securities, at fair value	0	0
Other assets	(12)	(16)
Total current assets	(3,182)	(3,159)
Investments in affiliates	(9,340)	(8,555)
Property, plant and equipment, net	0	0
Deferred income taxes	(2)	(8)
Other assets	(2,101)	(2,053)
Goodwill	0	0
Intangible assets, net	0	0
Total assets	(14,625)	(13,775)
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	(2,163)	(2,031)
Trade payables - third party and affiliates	(158)	(141)
Other liabilities	(312)	(442)
Deferred income taxes	(17)	(17)
Income taxes payable	(483)	(474)
Total current liabilities	(3,133)	(3,105)
Noncurrent Liabilities
Long-term debt	(2,070)	(2,052)
Deferred income taxes	(2)	(8)
Uncertain tax positions	0	0
Benefit obligations	0	0
Other liabilities	(39)	(9)
Total noncurrent liabilities	(2,111)	(2,069)
Total Celanese Corporation stockholders' equity	(9,381)	(8,601)
Noncontrolling interests	0	0
Total equity	(9,381)	(8,601)
Total liabilities and equity	$ (14,625)	$ (13,775)