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Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended | 12 Months Ended | 13 Months Ended | 21 Months Ended
--- | --- | --- | --- | ---
May 31, 2014 | May 31, 2014 | May 31, 2013 | May 31, 2012 | Feb. 01, 2012 | Nov. 14, 2013
Employee Benefit Plans [Abstract] |  |  |  |  |  |
Years of service to be eligible for Company match contribution |  | 1 year |  |  |  |
Maximum percentage of salary deferral under 401(k) plan |  | 50.00% |  |  |  |
Company contributions to the plan |  | $ 16.4 | $ 13.1 | $ 10.3 |  |
Amounts accrued under deferred compensation plans | $ 12.3 | $ 12.3 | $ 10.7 |  |  |
Percentage of eligible pay that is matched by the employer |  | 50.00% |  |  |  |
Percentage of employee pay eligible for employer matching contribution | 8.00% |  |  |  | 4.00% | 6.00%
Percentage of annual base salary that eligible employees can defer under Deferred Compensation Plan |  | 50.00% |  |  |  |
Percentage of board cash compensation that may be deferred under Deferred Compensation Plan |  | 100.00% |  |  |  |

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- Definition Percentage of the employee's match-eligible pay that is matched by the employer. + References No definition available. + Details
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- Details
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- Definition Outside directors deferred compensation plans deferred percentage maximum. + References No definition available. + Details
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- Definition Years of service to be eligible for Company match contribution + References No definition available. + Details
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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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