Business Combination (Details 2) - TNT Express Intangible [Member] $ in Millions	12 Months Ended
	May 31, 2016 USD ($)
Acquired Finite Lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 920
Customer relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets with finte lives	$ 685
Intangible Finite-lived assets useful life	15 years
Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets with finte lives	$ 90
Intangible Finite-lived assets useful life	4 years
Trademarks and Other Member
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets with finte lives	$ 145
Intangible Finite-lived assets useful life	4 years