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Description of Business, Basis of Presentation, and Significant Accounting Policies (Tables) | 12 Months Ended
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May 31, 2016
Description of Business, Basis of Presentation, and Significant Accounting Policies [Abstract] |
Estimated Useful Lives of Depreciable Assets |
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﻿Category |  | Depreciable life
﻿Buildings and improvements |  | Ten to 35 years or the remaining life, whichever is shorter
﻿Data processing equipment |  | Three to four years
﻿Furniture, fixtures, and equipment |  | Three to seven years
﻿Leasehold improvements |  | Ten years or the life of the lease, whichever is shorter
﻿

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