Goodwill and Other Intangible Assets - Schedule Of Identifiable Intangible Assets (Details) - USD ($) $ in Millions	May 31, 2017	May 31, 2016
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 846	$ 1,237
Accumulated Amortization	(317)	(229)
Net Book Value	529	1,008
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	656	912
Accumulated Amortization	(203)	(156)
Net Book Value	453	756
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	54	123
Accumulated Amortization	(26)	(16)
Net Book Value	28	107
Trademarks and other [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	136	202
Accumulated Amortization	(88)	(57)
Net Book Value	$ 48	$ 145