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Description of Business, Basis of Presentation, and Significant Accounting Policies (Tables) | 12 Months Ended
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May 31, 2019
Description of Business, Basis of Presentation, and Significant Accounting Policies [Abstract] |
Schedule of Recast of Selected Consolidated Statements of Income and Comprehensive Income | ﻿
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | For the year ended May 31, 2018
﻿ |  | As Previously |  |  |  |
﻿In millions, except per share amounts |  | Reported |  | Adjustments |  | As Adjusted
﻿Service revenue |  | $ | 3,317.4 |  | $ | (3.2) |  | $ | 3,314.2
﻿Operating expenses |  |  | 1,017.8 |  |  | 0.4 |  |  | 1,018.2
﻿Selling, general and administrative expenses |  |  | 1,075.6 |  |  | (7.6) |  |  | 1,068.0
﻿ Total expenses |  |  | 2,093.4 |  |  | (7.2) |  |  | 2,086.2
﻿Operating income |  |  | 1,287.5 |  |  | 4.0 |  |  | 1,291.5
﻿Income taxes |  |  | 362.4 |  |  | (56.4) |  |  | 306.0
﻿Net income |  | $ | 933.7 |  | $ | 60.4 |  | $ | 994.1
﻿Basic earnings per share |  | $ | 2.60 |  | $ | 0.17 |  | $ | 2.77
﻿Diluted earnings per share |  | $ | 2.58 |  | $ | 0.17 |  | $ | 2.75
﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | For the year ended May 31, 2017
﻿ |  | As Previously |  |  |  |
﻿In millions, except per share amounts |  | Reported |  | Adjustments |  | As Adjusted
﻿Service revenue |  | $ | 3,100.7 |  | $ | 1.7 |  | $ | 3,102.4
﻿Operating expenses |  |  | 919.6 |  |  | (0.2) |  |  | 919.4
﻿Selling, general and administrative expenses |  |  | 992.1 |  |  | (12.4) |  |  | 979.7
﻿ Total expenses |  |  | 1,911.7 |  |  | (12.6) |  |  | 1,899.1
﻿Operating income |  |  | 1,239.6 |  |  | 14.3 |  |  | 1,253.9
﻿Income taxes |  |  | 427.5 |  |  | 5.3 |  |  | 432.8
﻿Net income |  | $ | 817.3 |  | $ | 9.0 |  | $ | 826.3
﻿Basic earnings per share |  | $ | 2.27 |  | $ | 0.03 |  | $ | 2.30
﻿Diluted earnings per share(1) |  | $ | 2.25 |  | $ | 0.02 |  | $ | 2.28
| (1) |  | Diluted earnings per share amounts may not add across by +/- $0.01 due to rounding.
Schedule of Recast of Selected Consolidated Balance Sheet | ﻿
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | May 31, 2018
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | As Previously |  |  |  |
﻿In millions |  | Reported |  | Adjustments |  | As Adjusted
﻿Assets |  |  |  |  |  |  |  |  |
﻿Accounts receivable, net of allowance for doubtful accounts |  | $ | 413.6 |  | $ | (39.0) |  | $ | 374.6
﻿PEO unbilled receivables, net of advance collections(1) |  | $ | 117.8 |  | $ | — |  | $ | 117.8
﻿Prepaid expenses and other current assets |  | $ | 75.8 |  | $ | 148.2 |  | $ | 224.0
﻿Long-term deferred costs(2) |  | $ | 18.5 |  | $ | 342.5 |  | $ | 361.0
﻿Liabilities and stockholders' equity |  |  |  |  |  |  |  |  |
﻿Accounts payable |  | $ | 74.5 |  | $ | (0.8) |  | $ | 73.7
﻿Deferred revenue |  | $ | 24.3 |  | $ | 10.3 |  | $ | 34.6
﻿Deferred income taxes |  | $ | 48.8 |  | $ | 105.6 |  | $ | 154.4
﻿Other long-term liabilities |  | $ | 84.8 |  | $ | 4.3 |  | $ | 89.1
﻿Retained earnings |  | $ | 930.3 |  | $ | 332.3 |  | $ | 1,262.6
| (1) |  | Amounts were previously reported as a component of accounts receivable, net of allowance for doubtful accounts included in the Company’s fiscal 2018 Form 10-K. PEO unbilled receivables, net of advance collections are separately presented on the Consolidated Balance Sheets contained in this Form 10-K.
| (2) |  | Amounts were previously reported as a component of other long-term assets on the Consolidated Balance Sheets included in the Company’s fiscal 2018 Form 10-K. Long-term deferred costs are separately presented on the Consolidated Balance Sheets contained in this Form 10-K.
Schedule of Recast of Selected Consolidated Statement of Cash Flow | ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | For the year ended May 31, 2018
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  | ASU No. |  | ASU No. |  |  |
﻿ |  | As Previously |  | 2014-09 |  | 2016-18 |  |  |
﻿In millions |  | Reported |  | Adjustments |  | Adjustments |  | As Adjusted
﻿Cash flows from operating activities |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income |  | $ | 933.7 |  | $ | 60.4 |  | $ | — |  | $ | 994.1
﻿Amortization of deferred contract costs |  | $ | — |  | $ | 174.7 |  | $ | — |  | $ | 174.7
﻿Provision/(benefit) for deferred income taxes |  | $ | 19.2 |  | $ | (56.4) |  | $ | — |  | $ | (37.2)
﻿Accounts receivable and PEO unbilled receivables, net |  | $ | 13.6 |  | $ | 2.6 |  | $ | — |  | $ | 16.2
﻿Prepaid expenses and other current assets |  | $ | 17.7 |  | $ | 0.3 |  | $ | — |  | $ | 18.0
﻿Accounts payable and other current liabilities |  | $ | 42.6 |  | $ | 0.3 |  | $ | — |  | $ | 42.9
﻿Deferred costs |  | $ | — |  | $ | (181.8) |  | $ | — |  | $ | (181.8)
﻿Net change in other long-term assets and liabilities |  | $ | (5.6) |  | $ | (0.1) |  | $ | — |  | $ | (5.7)
﻿Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |  |
﻿Net change in funds held for clients' money market securities and other cash equivalents |  | $ | (1,677.5) |  | $ | — |  | $ | 1,677.5 |  | $ | —
﻿Net cash (used in)/provided by investing activities |  | $ | (679.0) |  | $ | — |  | $ | 1,677.5 |  | $ | 998.5
﻿Net change in cash, cash equivalents, restricted cash and restricted cash equivalents |  | $ | 173.6 |  | $ | — |  | $ | 1,677.5 |  | $ | 1,851.1
﻿Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of fiscal year |  | $ | 184.6 |  | $ | — |  | $ | 264.8 |  | $ | 449.4
﻿Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period |  | $ | 358.2 |  | $ | — |  | $ | 1,942.3 |  | $ | 2,300.5
﻿ ﻿ ﻿ ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | For the year ended May 31, 2017
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  | ASU No. |  | ASU No. |  |  |
﻿ |  | As Previously |  | 2014-09 |  | 2016-18 |  |  |
﻿In millions |  | Reported |  | Adjustments |  | Adjustments |  | As Adjusted
﻿Cash flows from operating activities |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income |  | $ | 817.3 |  | $ | 9.0 |  | $ | — |  | $ | 826.3
﻿Amortization of deferred contract costs |  | $ | — |  | $ | 169.4 |  | $ | — |  | $ | 169.4
﻿Provision for deferred income taxes |  | $ | 17.4 |  | $ | 5.3 |  | $ | — |  | $ | 22.7
﻿Accounts receivable and PEO unbilled receivables, net |  | $ | (103.7) |  | $ | 0.4 |  | $ | — |  | $ | (103.3)
﻿Prepaid expenses and other current assets |  | $ | (34.1) |  | $ | 1.9 |  | $ | — |  | $ | (32.2)
﻿Accounts payable and other current liabilities |  | $ | 39.1 |  | $ | (0.9) |  | $ | — |  | $ | 38.2
﻿Deferred costs |  | $ | — |  | $ | (185.6) |  | $ | — |  | $ | (185.6)
﻿Net change in other long-term assets and liabilities |  | $ | (15.4) |  | $ | 0.5 |  | $ | — |  | $ | (14.9)
﻿Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |  |
﻿Net change in funds held for clients' money market securities and other cash equivalents |  | $ | 237.6 |  | $ | — |  | $ | (237.6) |  | $ | —
﻿Net cash used in investing activities |  | $ | (424.6) |  | $ | — |  | $ | (237.6) |  | $ | (662.2)
﻿Net change in cash, cash equivalents, restricted cash and restricted cash equivalents |  | $ | 53.1 |  | $ | — |  | $ | (237.6) |  | $ | (184.5)
﻿Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of fiscal year |  | $ | 131.5 |  | $ | — |  | $ | 502.4 |  | $ | 633.9
﻿Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period |  | $ | 184.6 |  | $ | — |  | $ | 264.8 |  | $ | 449.4
﻿
Estimated Useful Lives of Depreciable Assets |
﻿ |  |
﻿ |  |
﻿Category |  | Depreciable life
﻿Buildings and improvements |  | 10 to 35 years or the remaining life, whichever is shorter
﻿Data processing equipment |  | Three to four years
﻿Furniture, fixtures, and equipment |  | Two to seven years
﻿Leasehold improvements |  | 10 years or the life of the lease, whichever is shorter
﻿

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