Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Nov. 30, 2019	May 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 2,031	$ 2,319
Receivables, less allowances of $315 and $300	9,709	9,116
Spare parts, supplies and fuel, less allowances of $330 and $335	576	553
Prepaid expenses and other	882	1,098
Total current assets	13,198	13,086
PROPERTY AND EQUIPMENT, AT COST	62,715	59,511
Less accumulated depreciation and amortization	30,307	29,082
Net property and equipment	32,408	30,429
OTHER LONG-TERM ASSETS
Operating lease right-of-use assets, net	14,097
Goodwill	6,861	6,884
Other assets	3,390	4,004
Total other long-term assets	24,348	10,888
ASSETS	69,954	54,403
CURRENT LIABILITIES
Short-term borrowings	150
Current portion of long-term debt	16	964
Accrued salaries and employee benefits	1,632	1,741
Accounts payable	3,283	3,030
Operating lease liabilities	1,928
Accrued expenses	3,538	3,278
Total current liabilities	10,547	9,013
LONG-TERM DEBT, LESS CURRENT PORTION	18,691	16,617
OTHER LONG-TERM LIABILITIES
Deferred income taxes	3,072	2,821
Pension, postretirement healthcare and other benefit obligations	4,156	5,095
Self-insurance accruals	1,921	1,899
Operating lease liabilities	12,432
Deferred lease obligations		531
Other liabilities	476	670
Total other long-term liabilities	22,057	11,016
COMMITMENTS AND CONTINGENCIES
COMMON STOCKHOLDERS' INVESTMENT
Common stock, $0.10 par value; 800 million shares authorized; 318 million shares issued as of November 30, 2019 and May 31, 2019	32	32
Additional paid-in capital	3,287	3,231
Retained earnings	25,431	24,648
Accumulated other comprehensive loss	(866)	(865)
Treasury stock, at cost	(9,225)	(9,289)
Total common stockholders’ investment	18,659	17,757
LIABILITIES AND COMMON STOCKHOLDERS' INVESTMENT	$ 69,954	$ 54,403