Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 2,548	$ 1,854
Short-term investments	1,524	1,835
Accounts and other receivables	1,086	568
Inventories of parts and supplies, at cost	529	461
Prepaid expenses and other current assets	287	310
Total current assets	5,974	5,028
Property and equipment, at cost:
Flight equipment	21,629	21,753
Ground property and equipment	5,672	4,960
Deposits on flight equipment purchase contracts	248	775
Assets constructed for others	164	1,768
Property and equipment, at cost	27,713	29,256
Less allowance for depreciation and amortization	10,688	9,731
Property and equipment, net	17,025	19,525
Goodwill	970	970
Operating lease right-of-use assets	1,349	0
Other assets	577	720
Total assets	25,895	26,243
Current liabilities:
Accounts payable	1,574	1,416
Accrued liabilities	1,749	1,749
Current operating lease liabilities	353	0
Air traffic liability	4,457	4,134
Current maturities of long-term debt	819	606
Total current liabilities	8,952	7,905
Long-term debt less current maturities	1,846	2,771
Air traffic liablity - noncurrent	1,053	936
Deferred income taxes	2,364	2,427
Construction obligation	164	1,701
Noncurrent operating lease liabilities	978	0
Other noncurrent liabilities	706	650
Stockholders' equity:
Common stock, $1.00 par value: 2,000,000,000 shares authorized; 807,611,634 shares issued in 2019 and 2018	808	808
Capital in excess of par value	1,581	1,510
Retained earnings	17,945	15,967
Accumulated other comprehensive income (loss)	(61)	20
Treasury stock, at cost: 288,547,318 and 255,008,275 shares in 2019 and 2018 respectively	(10,441)	(8,452)
Total stockholders' equity	9,832	9,853
Total liabilities and stockholders' equity	$ 25,895	$ 26,243