Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 6,505	$ 2,762
Short-term investments	958	2,182
Receivables, less allowance for credit losses (2020 — $11; 2019 — $9)	857	1,364
Aircraft fuel, spare parts and supplies, less obsolescence allowance (2020 — $464; 2019 — $425)	955	1,072
Prepaid expenses and other	766	814
Total current assets	10,041	8,194
Operating property and equipment:
Flight equipment	37,339	35,421
Other property and equipment	8,350	7,926
Purchase deposits for flight equipment	1,624	1,360
Total operating property and equipment	47,313	44,707
Less — Accumulated depreciation and amortization	(15,578)	(14,537)
Total operating property and equipment, net	31,735	30,170
Operating lease right-of-use assets	4,738	4,758
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization (2020 — $1,467; 2019 — $1,440)	2,852	3,009
Restricted cash	73	106
Notes receivable, less allowance for credit losses (2020 — $553)	141	671
Investments in affiliates and other, net	798	1,180
Total other assets	8,387	9,489
Total assets	54,901	52,611
Current liabilities:
Advance ticket sales	4,950	4,819
Accounts payable	1,725	2,703
Frequent flyer deferred revenue	840	2,440
Accrued salaries and benefits	1,669	2,271
Current maturities of long-term debt	4,454	1,407
Current maturities of finance leases	93	46
Current maturities of operating leases	598	686
Payroll Support Program deferred credit	1,508	0
Other	558	566
Total current liabilities	16,395	14,938
Long-term debt	14,318	13,145
Long-term obligations under finance leases	316	220
Long-term obligations under operating leases	5,113	4,946
Other liabilities and deferred credits:
Frequent flyer deferred revenue	4,830	2,836
Postretirement benefit liability	957	789
Pension liability	2,221	1,446
Deferred income taxes	804	1,736
Other	1,430	1,024
Total other liabilities and deferred credits	10,242	7,831
Commitments and contingencies
Stockholders' equity:
Preferred stock	0	0
Common stock	3	3
Additional capital invested	7,307	6,129
Retained earnings	6,365	9,716
Stock held in treasury, at cost	(3,899)	(3,599)
Accumulated other comprehensive loss	(1,259)	(718)
Total stockholders' equity	8,517	11,531	[1]
Total liabilities and stockholders' equity	54,901	52,611
United Airlines, Inc.
Current assets:
Cash and cash equivalents	6,505	2,756
Short-term investments	958	2,182
Receivables, less allowance for credit losses (2020 — $11; 2019 — $9)	857	1,364
Aircraft fuel, spare parts and supplies, less obsolescence allowance (2020 — $464; 2019 — $425)	955	1,072
Prepaid expenses and other	766	814
Total current assets	10,041	8,188
Operating property and equipment:
Flight equipment	37,339	35,421
Other property and equipment	8,350	7,926
Purchase deposits for flight equipment	1,624	1,360
Total operating property and equipment	47,313	44,707
Less — Accumulated depreciation and amortization	(15,578)	(14,537)
Total operating property and equipment, net	31,735	30,170
Operating lease right-of-use assets	4,738	4,758
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization (2020 — $1,467; 2019 — $1,440)	2,852	3,009
Restricted cash	73	106
Notes receivable, less allowance for credit losses (2020 — $553)	141	671
Investments in affiliates and other, net	798	1,180
Total other assets	8,387	9,489
Total assets	54,901	52,605
Current liabilities:
Advance ticket sales	4,950	4,819
Accounts payable	1,725	2,703
Frequent flyer deferred revenue	840	2,440
Accrued salaries and benefits	1,669	2,271
Current maturities of long-term debt	4,454	1,407
Current maturities of finance leases	93	46
Current maturities of operating leases	598	686
Payroll Support Program deferred credit	1,508	0
Other	562	571
Total current liabilities	16,399	14,943
Long-term debt	14,318	13,145
Long-term obligations under finance leases	316	220
Long-term obligations under operating leases	5,113	4,946
Other liabilities and deferred credits:
Frequent flyer deferred revenue	4,830	2,836
Postretirement benefit liability	957	789
Pension liability	2,221	1,446
Deferred income taxes	832	1,763
Other	1,430	1,025
Total other liabilities and deferred credits	10,270	7,859
Commitments and contingencies
Stockholders' equity:
Common stock	0	0
Additional capital invested	30	0
Retained earnings	8,676	12,353
Accumulated other comprehensive loss	(1,259)	(718)
Receivable from related parties	1,038	(143)
Total stockholders' equity	8,485	11,492
Total liabilities and stockholders' equity	$ 54,901	$ 52,605

[1] Transition adjustment due to the adoption of Accounting Standards Update No. 2016-13, Financial Instruments—Credit Losses. See Note 1 to the financial statements contained in Part I, Item 1 of this report for additional information.