Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 4,917	$ 2,843
Receivables, less allowances of $176 and $178	5,044	4,704
Spare parts, supplies and fuel, less allowances of $205 and $184	457	440
Deferred income taxes	533	533
Prepaid expenses and other	323	536
Total current assets	11,274	9,056
PROPERTY AND EQUIPMENT, AT COST
Aircraft and related equipment	14,716	14,360
Package handling and ground support equipment	6,452	5,912
Computer and electronic equipment	4,958	4,646
Vehicles	4,080	3,654
Facilities and other	7,903	7,592
Gross property and equipment	38,109	36,164
Less accumulated depreciation and amortization	19,625	18,916
Net property and equipment	18,484	17,248
OTHER LONG-TERM ASSETS
Goodwill	2,755	2,387
Other assets	1,054	1,212
Total other long-term assets	3,809	3,599
ASSETS	33,567	29,903
CURRENT LIABILITIES
Current portion of long-term debt	251	417
Accrued salaries and employee benefits	1,688	1,635
Accounts payable	1,879	1,613
Accrued expenses	1,932	1,709
Total current liabilities	5,750	5,374
LONG-TERM DEBT, LESS CURRENT PORTION	2,739	1,250
OTHER LONG-TERM LIABILITIES
Deferred income taxes	1,652	836
Pension, postretirement healthcare and other benefit obligations	3,916	5,582
Self-insurance accruals	987	963
Deferred lease obligations	778	784
Deferred gains, principally related to aircraft transactions	227	251
Other liabilities	120	136
Total other long-term liabilities	7,680	8,552
COMMITMENTS AND CONTINGENCIES
COMMON STOCKHOLDERS' INVESTMENT
Common stock, $0.10 par value; 800 million shares authorized; 318 million shares issued as of May 31, 2013 and 317 million shares issued as of May 31, 2012	32	32
Additional paid-in capital	2,668	2,595
Retained earnings	18,519	17,134
Accumulated other comprehensive loss	(3,820)	(4,953)
Treasury stock, at cost	(1)	(81)
Total common stockholders' investment	17,398	14,727
LIABILITIES AND STOCKHOLDERS' INVESTMENT	$ 33,567	$ 29,903