Annual report pursuant to Section 13 and 15(d)

Supplemental Cash Flow Information (Details)

v3.2.0.727
Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
12 Months Ended
May. 31, 2015
May. 31, 2014
May. 31, 2013
Supplemental Cash Flow Information [Abstract]      
Income taxes paid $ 372.8 $ 317.8 $ 371.0
Lease incentives received $ 8.5 $ 6.7 $ 6.4