Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 1)

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Income Taxes (Details 1) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
May 31, 2014
Feb. 28, 2014
Nov. 30, 2013
Aug. 31, 2013
May 31, 2013
Feb. 28, 2013
Nov. 30, 2012
Aug. 31, 2012
May 31, 2014
May 31, 2013
May 31, 2012
Current:                      
Federal                 $ 314.5 $ 274.2 $ 259.8
State                 51.0 62.9 40.8
Total current                 365.5 337.1 300.6
Deferred:                      
Federal                 (3.5) 5.5 9.3
State                 (1.4) (0.2) 2.4
Total deferred                 (4.9) 5.3 11.7
Provision for income taxes $ 83.8 $ 92.1 $ 91.2 $ 93.5 $ 89.7 $ 81.9 $ 84.0 $ 86.8 $ 360.6 $ 342.4 $ 312.3