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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

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