CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 6,086	$ 6,246
Short-term investments	1,618	1,516
Total unrestricted cash, cash equivalents and short-term investments	7,704	7,762
Restricted cash	120	40
Receivables, less allowance for doubtful accounts	1,818	1,358
Aircraft fuel, spare parts and supplies, less obsolescence allowance	611	615
Deferred income taxes	658	615
Prepaid expenses and other	797	607
Total current assets	11,708	10,997
Operating property and equipment: Owned-
Flight equipment	16,412	15,786
Other property and equipment	3,118	3,126
Operating property and equipment - owned, gross	19,530	18,912
Less - Accumulated depreciation and amortization	(4,482)	(4,005)
Operating property and equipment - owned, net	15,048	14,907
Purchase deposits for flight equipment	450	382
Operating property and equipment: Capital leases-
Flight equipment	1,483	1,458
Other property and equipment	235	237
Operating property and equipment - capital leases, gross	1,718	1,695
Less - Accumulated amortization	(639)	(565)
Operating property and equipment - capital leases, net	1,079	1,130
Total property, plant, and equipment, net	16,577	16,419
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization	4,681	4,750
Restricted cash	466	529
Other, net	739	770
Other assets total	10,409	10,572
Total assets	38,694	37,988
Current liabilities:
Advance ticket sales	4,667	3,114
Frequent flyer deferred revenue	2,526	2,405
Accounts payable	2,165	1,998
Accrued salaries and benefits	1,230	1,509
Current maturities of long-term debt	1,349	1,186
Current maturities of capital leases	119	125
Other	1,256	1,057
Total current liabilities	13,312	11,394
Long-term debt	10,128	10,496
Long-term obligations under capital leases	851	928
Other liabilities and deferred credits:
Frequent flyer deferred revenue	2,872	3,253
Postretirement benefit liability	2,438	2,407
Pension liability	1,849	1,862
Advanced purchase of miles	1,624	1,711
Deferred income taxes	1,646	1,603
Lease fair value adjustment, net	975	1,133
Other	1,364	1,395
Total non-current liabilities	12,768	13,364
Commitments and contingencies
Stockholder's equity (deficit):
Preferred stock
Common stock	3	3
Additional capital invested	7,135	7,114
Retained earnings (deficit)	(4,972)	(4,863)
Stock held in treasury, at cost	(32)	(31)
Accumulated other comprehensive loss	(499)	(417)
Total stockholders' equity (deficit)	1,635	1,806
Total liabilities and stockholders' equity (deficit)	38,694	37,988
United Airlines Inc
Current assets:
Cash and cash equivalents	4,076	3,458
Short-term investments	342	275
Total unrestricted cash, cash equivalents and short-term investments	4,418	3,733
Restricted cash	120	40
Receivables from related parties (Note 11)	2,432	228
Receivables, less allowance for doubtful accounts	1,568	763
Aircraft fuel, spare parts and supplies, less obsolescence allowance	327	340
Deferred income taxes	316	348
Prepaid expenses and other	619	447
Total current assets	9,800	5,899
Operating property and equipment: Owned-
Flight equipment	9,269	9,135
Other property and equipment	2,190	2,260
Operating property and equipment - owned, gross	11,459	11,395
Less - Accumulated depreciation and amortization	(3,592)	(3,359)
Operating property and equipment - owned, net	7,867	8,036
Purchase deposits for flight equipment	60	57
Operating property and equipment: Capital leases-
Flight equipment	1,483	1,458
Other property and equipment	65	67
Operating property and equipment - capital leases, gross	1,548	1,525
Less - Accumulated amortization	(615)	(548)
Operating property and equipment - capital leases, net	933	977
Total property, plant, and equipment, net	8,860	9,070
Other assets:
Intangibles, less accumulated amortization	2,255	2,283
Receivables from related parties (Note 11)	729
Restricted cash	325	393
Other, net	594	600
Other assets total	3,903	3,276
Total assets	22,563	18,245
Current liabilities:
Advance ticket sales	4,481	1,652
Frequent flyer deferred revenue	2,526	1,484
Accounts payable	1,406	1,109
Accrued salaries and benefits	777	988
Current maturities of long-term debt	643	615
Current maturities of capital leases	115	122
Payables to related parties	104	104
Other	1,044	853
Total current liabilities	11,096	6,927
Long-term debt	4,888	5,130
Long-term obligations under capital leases	674	735
Other liabilities and deferred credits:
Frequent flyer deferred revenue	2,872	2,018
Postretirement benefit liability	2,138	2,115
Pension liability	84	92
Advanced purchase of miles	1,624	1,442
Deferred income taxes	675	707
Other	959	983
Total non-current liabilities	8,352	7,357
Commitments and contingencies
Stockholder's equity (deficit):
Common stock
Additional capital invested	3,439	3,432
Retained earnings (deficit)	(5,702)	(5,208)
Accumulated other comprehensive loss	(184)	(128)
Total stockholders' equity (deficit)	(2,447)	(1,904)
Total liabilities and stockholders' equity (deficit)	22,563	18,245
Continental Airlines Inc
Current assets:
Cash and cash equivalents	2,004	2,782
Short-term investments	1,276	1,241
Total unrestricted cash, cash equivalents and short-term investments	3,280	4,023
Receivables, less allowance for doubtful accounts	250	595
Aircraft fuel, spare parts and supplies, less obsolescence allowance	285	275
Deferred income taxes	347	267
Prepaid expenses and other	184	165
Total current assets	4,346	5,325
Operating property and equipment: Owned-
Flight equipment	7,143	6,651
Other property and equipment	928	866
Operating property and equipment - owned, gross	8,071	7,517
Less - Accumulated depreciation and amortization	(890)	(646)
Operating property and equipment - owned, net	7,181	6,871
Purchase deposits for flight equipment	390	324
Operating property and equipment: Capital leases-
Other property and equipment	170	170
Less - Accumulated amortization	(24)	(17)
Operating property and equipment - capital leases, net	146	153
Total property, plant, and equipment, net	7,717	7,348
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization	2,428	2,469
Restricted cash	140	135
Other, net	434	364
Other assets total	7,525	7,491
Total assets	19,588	20,164
Current liabilities:
Advance ticket sales	186	1,462
Frequent flyer deferred revenue		921
Accounts payable	765	894
Accrued salaries and benefits	454	521
Current maturities of long-term debt	706	571
Current maturities of capital leases	3	3
Payables to related parties	2,210	11
Other	286	279
Total current liabilities	4,610	4,662
Long-term debt	4,834	4,957
Long-term obligations under capital leases	177	193
Other liabilities and deferred credits:
Frequent flyer deferred revenue		1,235
Postretirement benefit liability	300	292
Pension liability	1,765	1,770
Advanced purchase of miles		270
Payables to related parties (Note 11)	729
Deferred income taxes	901	820
Lease fair value adjustment, net	975	1,133
Other	551	507
Total non-current liabilities	5,221	6,027
Commitments and contingencies
Stockholder's equity (deficit):
Common stock
Additional capital invested	4,163	4,148
Retained earnings (deficit)	906	474
Accumulated other comprehensive loss	(323)	(297)
Total stockholders' equity (deficit)	4,746	4,325
Total liabilities and stockholders' equity (deficit)	$ 19,588	$ 20,164