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Service Revenue (Tables) | 12 Months Ended
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May 31, 2019
Service Revenue [Abstract] |
Summary of Disaggregates Revenue by Services |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Year ended May 31,
﻿ |  |  |  |  | 2018 |  | 2017
﻿In millions |  | 2019 |  | As Adjusted(1) |  | As Adjusted(1)
﻿Management Solutions |  | $ | 2,877.7 |  | $ | 2,758.4 |  | $ | 2,680.7
﻿PEO and Insurance Services |  |  | 814.2 |  |  | 555.8 |  |  | 421.7
﻿Total service revenue |  | $ | 3,691.9 |  | $ | 3,314.2 |  | $ | 3,102.4
﻿ |  |  |  |  |  |  |  |  |
﻿ (1) Amounts have been adjusted to reflect the adoption of ASC Topic 606.
Summary of Changes in Deferred Revenue Related to Material Right Performance Obligations |
﻿ |  |  |
﻿ |  | Year ended
﻿In millions |  | May 31, 2019
﻿Balance, beginning of period |  | $ | 46.4
﻿Deferral of revenue |  |  | 27.6
﻿Recognition of unearned revenue |  |  | (28.3)
﻿Balance, end of period |  | $ | 45.7
﻿ |  |  |
﻿
Summary of Changes in Deferred Costs to Obtain and Fulfill Contracts |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Year ended May 31, 2019
﻿ |  | Beginning |  | Capitalization |  |  |  | Ending
﻿In millions |  | balance |  | of costs |  | Amortization |  | balance
﻿Costs to obtain a contract |  | $ | 455.0 |  | $ | 166.5 |  | $ | (157.2) |  | $ | 464.3
﻿Costs to fulfill a contact |  | $ | 65.4 |  | $ | 23.7 |  | $ | (23.0) |  | $ | 66.1
﻿

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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