Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Condensed Consolidated Statement of Other Comprehensive Income
Net income	$ 715	$ 692
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax expense of $4 in 2016 and tax benefit of $13 in 2015	12	(138)
Amortization of prior service credit, net of tax benefit of $11 in 2016 and $7 in 2015	(19)	(24)
Other comprehensive loss	(7)	(162)
COMPREHENSIVE INCOME	$ 708	$ 530