Consolidated Statements of Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2012	May 31, 2011	May 31, 2010
Consolidated Statements of Income
REVENUES	$ 25,766	$ 23,990	$ 21,243
OPERATING EXPENSES:
Salaries and employee benefits	9,365	8,919	8,177
Purchased transportation	1,357	1,243	1,058
Rentals and landing fees	1,657	1,650	1,557
Depreciation and amortization	1,157	1,048	1,005
Fuel	4,304	3,553	2,652
Maintenance and repairs	1,327	1,348	1,127
Impairment and other charges	134
Intercompany charges	2,163	2,015	1,918
Other	3,054	3,008	2,623
OPERATING EXPENSES	24,518	22,784	20,117
OPERATING INCOME	1,248	1,206	1,126
OTHER INCOME (EXPENSE):
Interest income	34	10	15
Other, net	(45)	(76)	(82)
OTHER INCOME (EXPENSE)	(11)	(66)	(67)
INCOME BEFORE INCOME TAXES	1,237	1,140	1,059
PROVISION FOR INCOME TAXES	429	409	408
NET INCOME	$ 808	$ 731	$ 651