Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 3,935	$ 4,770
Short-term investments	1,801	1,773
Total unrestricted cash, cash equivalents and short-term investments	5,736	6,543
Restricted cash	46	65
Receivables, less allowance for doubtful accounts	1,693	1,338
Aircraft fuel, spare parts and supplies, less obsolescence allowance	646	695
Deferred income taxes	568	543
Prepaid expenses and other	700	865
Total current assets	9,389	10,049
Operating property and equipment: Owned-
Flight equipment	18,486	17,561
Other property and equipment	3,474	3,269
Operating property and equipment - owned, gross	21,960	20,830
Less - Accumulated depreciation and amortization	(5,846)	(5,006)
Operating property and equipment - owned, net	16,114	15,824
Purchase deposits for flight equipment	674	462
Capital leases-
Flight equipment	1,483	1,484
Other property and equipment	306	235
Operating property and equipment - capital leases, gross	1,789	1,719
Less - Accumulated amortization	(811)	(713)
Operating property and equipment - capital leases, net	978	1,006
Total property, plant, and equipment, net	17,766	17,292
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization	4,487	4,597
Restricted cash	366	382
Other, net	729	785
Other assets total	10,105	10,287
Total assets	37,260	37,628
Current liabilities:
Advance ticket sales	4,123	3,360
Frequent flyer deferred revenue	2,378	2,364
Accounts payable	2,126	2,312
Accrued salaries and benefits	1,844	1,763
Current maturities of long-term debt	957	1,812
Current maturities of capital leases	117	122
Other	1,059	1,085
Total current liabilities	12,604	12,818
Long-term debt	10,204	10,440
Long-term obligations under capital leases	781	792
Other liabilities and deferred credits:
Frequent flyer deferred revenue	2,556	2,756
Postretirement benefit liability	2,653	2,614
Pension liability	1,803	2,400
Advanced purchase of miles	1,388	1,537
Deferred income taxes	1,573	1,543
Lease fair value adjustment, net	672	881
Other	1,298	1,366
Total non-current liabilities	11,943	13,097
Commitments and contingencies
Stockholder's equity:
Preferred stock
Common stock	4	3
Additional capital invested	7,410	7,145
Accumulated deficit	(5,155)	(5,586)
Stock held in treasury, at cost	(38)	(35)
Accumulated other comprehensive loss	(493)	(1,046)
Total stockholders' equity	1,728	481
Total liabilities and stockholders' equity (deficit)	37,260	37,628
United Airlines, Inc.
Current assets:
Cash and cash equivalents	3,928	4,765
Short-term investments	1,801	1,773
Total unrestricted cash, cash equivalents and short-term investments	5,729	6,538
Restricted cash	46	65
Receivables from related parties	231	226
Receivables, less allowance for doubtful accounts	1,693	1,338
Aircraft fuel, spare parts and supplies, less obsolescence allowance	646	695
Deferred income taxes	578	546
Prepaid expenses and other	685	841
Total current assets	9,608	10,249
Operating property and equipment: Owned-
Flight equipment	18,486	17,561
Other property and equipment	3,474	3,269
Operating property and equipment - owned, gross	21,960	20,830
Less - Accumulated depreciation and amortization	(5,846)	(5,006)
Operating property and equipment - owned, net	16,114	15,824
Purchase deposits for flight equipment	674	462
Capital leases-
Flight equipment	1,483	1,484
Other property and equipment	306	235
Operating property and equipment - capital leases, gross	1,789	1,719
Less - Accumulated amortization	(811)	(713)
Operating property and equipment - capital leases, net	978	1,006
Total property, plant, and equipment, net	17,766	17,292
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization	4,487	4,597
Restricted cash	365	382
Other, net	1,104	1,052
Other assets total	10,479	10,554
Total assets	37,853	38,095
Current liabilities:
Advance ticket sales	4,123	3,360
Frequent flyer deferred revenue	2,378	2,364
Accounts payable	2,131	2,316
Accrued salaries and benefits	1,844	1,763
Current maturities of long-term debt	957	1,812
Current maturities of capital leases	117	122
Payables to related parties	42	75
Other	1,120	1,140
Total current liabilities	12,712	12,952
Long-term debt	10,051	10,038
Long-term obligations under capital leases	781	792
Other liabilities and deferred credits:
Frequent flyer deferred revenue	2,556	2,756
Postretirement benefit liability	2,653	2,614
Pension liability	1,803	2,400
Advanced purchase of miles	1,388	1,537
Deferred income taxes	1,508	1,470
Lease fair value adjustment, net	672	881
Other	1,483	1,494
Total non-current liabilities	12,063	13,152
Commitments and contingencies
Stockholder's equity:
Additional capital invested	7,636	7,611
Accumulated deficit	(4,897)	(5,397)
Accumulated other comprehensive loss	(493)	(1,053)
Total stockholders' equity	2,246	1,161
Total liabilities and stockholders' equity (deficit)	$ 37,853	$ 38,095