Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Operating Activities:
Net income	$ 344	$ 269
Noncash charges:
Depreciation and amortization	736	653
Other, net	108	135
Changes in assets and liabilities. net	(76)	1,156
Cash provided by operating activities	1,112	2,213
Investing Activities:
Capital expenditures	(992)	(1,262)
Business acquisitions, net of cash acquired		(483)
Other	14	13
Cash used in investing activities	(978)	(1,732)
Financing Activities:
Principal payments on debt	(3)	(416)
Cash used in financing activities	(3)	(416)
Effect of exchange rate changes on cash	(2)	12
Net increase in cash and cash equivalents	129	77
Cash and cash equivalents at beginning of period	769	712
Cash and cash equivalents at end of period	$ 898	$ 789