Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
Operating Activities:
Net income	$ 1,015	$ 773
Noncash charges:
Depreciation and amortization	1,030	1,098
Other, net	426	176
Changes in assets and liabilities. net	(461)	(329)
Cash provided by operating activities	2,010	1,718
Investing Activities:
Capital expenditures	(1,857)	(1,644)
Other	15	1
Cash used in investing activities	(1,842)	(1,643)
Financing Activities:
Principal payments on debt	(7)
Cash used in financing activities	(7)
Effect of exchange rate changes on cash	(64)	(90)
Net increase (decrease) in cash and cash equivalents	97	(15)
Cash and cash equivalents at beginning of period	884	858
Cash and cash equivalents at end of period	$ 981	$ 843