Annual report pursuant to Section 13 and 15(d)

Supplemental Cash Flow Information (Details)

v2.4.0.8
Supplemental Cash Flow Information (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
May 31, 2013
May 31, 2012
May 31, 2011
Supplemental Cash Flow Information [Abstract]      
Income taxes paid $ 371.0 $ 301.4 $ 255.6
Lease incentives received $ 6.4 $ 12.8 $ 10.5