Annual report pursuant to Section 13 and 15(d)

Supplemental Cash Flow Information (Narrative) (Details)

v3.7.0.1
Supplemental Cash Flow Information (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
May 31, 2017
May 31, 2016
May 31, 2015
Supplemental Cash Flow Information [Abstract]      
Income taxes paid $ 462.6 $ 369.9 $ 372.8
Lease incentives received $ 5.8 $ 4.3 $ 8.5