Consolidating Guarantor Financial Information (Schedule of Consolidating Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 998	$ 984	$ 978	$ 959
Trade receivables - third party and affiliates	986	867
Non-trade receivables, net	256	343
Inventories, net	816	804
Deferred income taxes	115	115
Marketable securities, at fair value	43	41
Other assets	32	28
Total current assets	3,246	3,182
Investments in affiliates	828	841
Property, plant and equipment, net	3,519	3,425
Deferred income taxes	261	289
Other assets	332	341
Goodwill	798	798
Intangible assets, net	145	142
Total assets	9,129	9,018
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	157	177
Trade payables - third party and affiliates	790	799
Other liabilities	479	541
Deferred income taxes	10	10
Income taxes payable	74	18
Total current liabilities	1,510	1,545
Noncurrent Liabilities
Long-term debt	2,881	2,887
Deferred income taxes	220	225
Uncertain tax positions	158	200
Benefit obligations	1,147	1,175
Other liabilities	293	287
Total noncurrent liabilities	4,699	4,774
Total Celanese Corporation stockholders' equity	2,812	2,699
Noncontrolling interests	108	0
Total equity	2,920	2,699
Total liabilities and equity	9,129	9,018
Parent Guarantor [Member]
Current Assets
Cash and cash equivalents	0	0	0	10
Trade receivables - third party and affiliates	0	0
Non-trade receivables, net	33	33
Inventories, net	0	0
Deferred income taxes	0	0
Marketable securities, at fair value	0	0
Other assets	0	0
Total current assets	33	33
Investments in affiliates	2,779	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	2,812	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	0	1
Deferred income taxes	0	0
Income taxes payable	0	0
Total current liabilities	0	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	2,812	2,699
Noncontrolling interests	0	0
Total equity	2,812	2,699
Total liabilities and equity	2,812	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	456	482
Inventories, net	0	0
Deferred income taxes	0	0
Marketable securities, at fair value	0	0
Other assets	4	5
Total current assets	460	487
Investments in affiliates	4,603	4,458
Property, plant and equipment, net	0	0
Deferred income taxes	0	0
Other assets	1,997	1,965
Goodwill	0	0
Intangible assets, net	0	0
Total assets	7,060	6,910
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	1,745	1,713
Trade payables - third party and affiliates	0	0
Other liabilities	37	28
Deferred income taxes	17	17
Income taxes payable	0	0
Total current liabilities	1,799	1,758
Noncurrent Liabilities
Long-term debt	2,466	2,468
Deferred income taxes	8	8
Uncertain tax positions	6	6
Benefit obligations	0	0
Other liabilities	2	3
Total noncurrent liabilities	2,482	2,485
Total Celanese Corporation stockholders' equity	2,779	2,667
Noncontrolling interests	0	0
Total equity	2,779	2,667
Total liabilities and equity	7,060	6,910
Subsidiary Guarantors [Member]
Current Assets
Cash and cash equivalents	248	284	325	275
Trade receivables - third party and affiliates	163	131
Non-trade receivables, net	2,120	2,166
Inventories, net	269	243
Deferred income taxes	74	74
Marketable securities, at fair value	43	41
Other assets	12	15
Total current assets	2,929	2,954
Investments in affiliates	1,827	1,677
Property, plant and equipment, net	940	969
Deferred income taxes	251	248
Other assets	139	144
Goodwill	305	305
Intangible assets, net	71	64
Total assets	6,462	6,361
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	177	122
Trade payables - third party and affiliates	328	312
Other liabilities	295	441
Deferred income taxes	0	0
Income taxes payable	521	460
Total current liabilities	1,321	1,335
Noncurrent Liabilities
Long-term debt	827	825
Deferred income taxes	0	0
Uncertain tax positions	7	16
Benefit obligations	919	943
Other liabilities	117	91
Total noncurrent liabilities	1,870	1,875
Total Celanese Corporation stockholders' equity	3,271	3,151
Noncontrolling interests	0	0
Total equity	3,271	3,151
Total liabilities and equity	6,462	6,361
Non-Guarantors [Member]
Current Assets
Cash and cash equivalents	750	700	653	674
Trade receivables - third party and affiliates	1,010	877
Non-trade receivables, net	524	586
Inventories, net	624	622
Deferred income taxes	58	58
Marketable securities, at fair value	0	0
Other assets	28	24
Total current assets	2,994	2,867
Investments in affiliates	565	594
Property, plant and equipment, net	2,579	2,456
Deferred income taxes	22	49
Other assets	306	285
Goodwill	493	493
Intangible assets, net	74	78
Total assets	7,033	6,822
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	366	373
Trade payables - third party and affiliates	649	628
Other liabilities	437	513
Deferred income taxes	10	10
Income taxes payable	34	32
Total current liabilities	1,496	1,556
Noncurrent Liabilities
Long-term debt	1,674	1,646
Deferred income taxes	224	225
Uncertain tax positions	145	178
Benefit obligations	228	232
Other liabilities	206	202
Total noncurrent liabilities	2,477	2,483
Total Celanese Corporation stockholders' equity	2,952	2,783
Noncontrolling interests	108	0
Total equity	3,060	2,783
Total liabilities and equity	7,033	6,822
Eliminations [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Trade receivables - third party and affiliates	(187)	(141)
Non-trade receivables, net	(2,877)	(2,924)
Inventories, net	(77)	(61)
Deferred income taxes	(17)	(17)
Marketable securities, at fair value	0	0
Other assets	(12)	(16)
Total current assets	(3,170)	(3,159)
Investments in affiliates	(8,946)	(8,555)
Property, plant and equipment, net	0	0
Deferred income taxes	(12)	(8)
Other assets	(2,110)	(2,053)
Goodwill	0	0
Intangible assets, net	0	0
Total assets	(14,238)	(13,775)
Current Liabilities
Short-term borrowings and current installments of long-term debt - third party and affiliates	(2,131)	(2,031)
Trade payables - third party and affiliates	(187)	(141)
Other liabilities	(290)	(442)
Deferred income taxes	(17)	(17)
Income taxes payable	(481)	(474)
Total current liabilities	(3,106)	(3,105)
Noncurrent Liabilities
Long-term debt	(2,086)	(2,052)
Deferred income taxes	(12)	(8)
Uncertain tax positions	0	0
Benefit obligations	0	0
Other liabilities	(32)	(9)
Total noncurrent liabilities	(2,130)	(2,069)
Total Celanese Corporation stockholders' equity	(9,002)	(8,601)
Noncontrolling interests	0	0
Total equity	(9,002)	(8,601)
Total liabilities and equity	$ (14,238)	$ (13,775)