Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 2,762	$ 1,972
Short-term investments	487	1,465
Accounts receivable, net of an allowance for uncollectible accounts of $15 and $9 at December 31, 2016 and 2015, respectively	2,064	2,020
Fuel inventory	519	379
Expendable parts and supplies inventories, net of an allowance for obsolescence of $110 and $114 at December 31, 2016 and 2015, respectively	372	318
Hedge derivative asset	393	1,987
Prepaid expenses and other	854	915
Total current assets	7,451	9,056
Property and Equipment, Net:
Property and equipment, net of accumulated depreciation and amortization of $12,456 and $10,871 at December 31, 2016 and 2015, respectively	24,375	23,039
Other Assets:
Goodwill	9,794	9,794
Identifiable intangibles, net of accumulated amortization of $828 and $811 at December 31, 2016 and 2015, respectively	4,844	4,861
Deferred income taxes, net	3,064	4,956
Other noncurrent assets	1,733	1,428
Total other assets	19,435	21,039
Total assets	51,261	53,134
Current Liabilities:
Current maturities of long-term debt and capital leases	1,131	1,563
Air traffic liability	4,626	4,503
Accounts payable	2,572	2,743
Accrued salaries and related benefits	2,924	3,195
Hedge derivative liability	688	2,581
Frequent flyer deferred revenue	1,648	1,635
Other accrued liabilities	1,650	1,306
Total current liabilities	15,239	17,526
Noncurrent Liabilities:
Long-term debt and capital leases	6,201	6,766
Pension, postretirement and related benefits	13,378	13,855
Frequent flyer deferred revenue	2,278	2,246
Other noncurrent liabilities	1,878	1,891
Total noncurrent liabilities	23,735	24,758
Commitments and Contingencies
Stockholders' Equity:
Common stock at $0.0001 par value; 1,500,000,000 shares authorized, 744,886,938 and 799,850,675 shares issued at December 31, 2016 and 2015, respectively	0	0
Additional paid-in capital	12,294	12,936
Retained earnings	7,903	5,562
Accumulated other comprehensive loss	(7,636)	(7,275)
Treasury stock, at cost, 14,149,229 and 21,066,684 shares at December 31, 2016 and 2015, respectively	(274)	(373)
Total stockholders' equity	12,287	10,850
Total liabilities and stockholders' equity	$ 51,261	$ 53,134