Consolidated Balance Sheets (UA) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 7,166	$ 18,283
Short-term investments	9,248	123
Restricted cash	45	37
Receivables, less allowance for credit losses (2022—$11; 2021—$28)	1,801	1,663
Aircraft fuel, spare parts and supplies, less obsolescence allowance (2022—$610; 2021—$546)	1,109	983
Prepaid expenses and other	689	745
Total current assets	20,058	21,834
Operating property and equipment:
Flight equipment	42,775	39,584
Other property and equipment	9,334	8,764
Purchase deposits for flight equipment	2,820	2,215
Total operating property and equipment	54,929	50,563
Less—Accumulated depreciation and amortization	(20,481)	(18,489)
Total operating property and equipment, net	34,448	32,074
Operating lease right-of-use assets	3,889	4,645
Other assets:
Goodwill	4,527	4,527
Intangibles, less accumulated amortization (2022—$1,472; 2021—$1,544)	2,762	2,803
Restricted cash	210	213
Deferred income taxes	91	659
Investments in affiliates and other, less allowance for credit losses (2022—$21; 2021—$622)	1,373	1,420
Total other assets	8,963	9,622
Total assets	67,358	68,175
Current liabilities:
Accounts payable	3,395	2,562
Accrued salaries and benefits	1,971	2,121
Advance ticket sales	7,555	6,354
Frequent flyer deferred revenue	2,693	2,239
Current maturities of long-term debt	2,911	3,002
Less: current maturities of lease obligations	23	834
Current maturities of operating leases	561	556
Current maturities of finance leases	104	76
Other	779	560
Total current liabilities	19,992	18,304
Long-term debt	28,283	30,361
Long-term obligations under operating leases	4,459	5,152
Long-term obligations under finance leases	115	219
Other liabilities and deferred credits:
Frequent flyer deferred revenue	3,982	4,043
Pension liability	747	1,920
Postretirement benefit liability	671	1,000
Other financial liabilities	844	863
Other	1,369	1,284
Total other liabilities and deferred credits	7,613	9,110
Commitments and contingencies
Stockholders' equity:
Common Stock, Value, Issued	4	4
Additional capital invested	8,986	9,156
Retained earnings	1,265	625
Accumulated other comprehensive income (loss)	175	(942)
Total stockholders' equity	6,896	5,029
Total liabilities and stockholders' equity	67,358	68,175
United Airlines, Inc.
Current assets:
Cash and cash equivalents	7,166	18,283
Short-term investments	9,248	123
Restricted cash	45	37
Receivables, less allowance for credit losses (2022—$11; 2021—$28)	1,801	1,663
Aircraft fuel, spare parts and supplies, less obsolescence allowance (2022—$610; 2021—$546)	1,109	983
Prepaid expenses and other	689	745
Total current assets	20,058	21,834
Operating property and equipment:
Flight equipment	42,775	39,584
Other property and equipment	9,334	8,764
Purchase deposits for flight equipment	2,820	2,215
Total operating property and equipment	54,929	50,563
Less—Accumulated depreciation and amortization	(20,481)	(18,489)
Total operating property and equipment, net	34,448	32,074
Operating lease right-of-use assets	3,889	4,645
Other assets:
Goodwill	4,527	4,527
Intangibles, less accumulated amortization (2022—$1,472; 2021—$1,544)	2,762	2,803
Restricted cash	210	213
Deferred income taxes	62	631
Investments in affiliates and other, less allowance for credit losses (2022—$21; 2021—$622)	1,373	1,420
Total other assets	8,934	9,594
Total assets	67,329	68,147
Current liabilities:
Accounts payable	3,395	2,562
Accrued salaries and benefits	1,971	2,121
Advance ticket sales	7,555	6,354
Frequent flyer deferred revenue	2,693	2,239
Current maturities of long-term debt	2,911	3,002
Less: current maturities of lease obligations	23	834
Current maturities of operating leases	561	556
Current maturities of finance leases	104	76
Other	781	563
Total current liabilities	19,994	18,307
Long-term debt	28,283	30,361
Long-term obligations under operating leases	4,459	5,152
Long-term obligations under finance leases	115	219
Other liabilities and deferred credits:
Frequent flyer deferred revenue	3,982	4,043
Pension liability	747	1,920
Postretirement benefit liability	671	1,000
Other financial liabilities	844	863
Other	1,369	1,284
Total other liabilities and deferred credits	7,613	9,110
Commitments and contingencies
Stockholders' equity:
Common Stock, Value, Issued	0	0
Additional capital invested	403	317
Retained earnings	3,716	2,977
Accumulated other comprehensive income (loss)	175	(942)
Payable to parent	2,571	2,646
Total stockholders' equity	6,865	4,998
Total liabilities and stockholders' equity	$ 67,329	$ 68,147