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Funds Held for Clients and Corporate Investments (Tables) | 12 Months Ended
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May 31, 2021
Funds Held for Clients and Corporate Investments [Abstract] |
Funds Held for Clients and Corporate Investments |
|  | May 31, 2021
|  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Fair
In millions |  | cost |  | gains |  | losses |  | value
Type of issue: |  |  |  |  |  |  |  |  |  |  |  |
Funds held for clients' money market securities and other ‎ restricted cash equivalents |  | $ | 739.6 |  | $ | — |  | $ | — |  | $ | 739.6
AFS securities: |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  |  | 86.5 |  |  | 1.4 |  |  | — |  |  | 87.9
Corporate bonds |  |  | 635.8 |  |  | 28.8 |  |  | (0.2) |  |  | 664.4
Municipal bonds |  |  | 1,669.0 |  |  | 33.0 |  |  | (2.3) |  |  | 1,699.7
U.S. government agency and treasury securities |  |  | 549.6 |  |  | 20.1 |  |  | (1.5) |  |  | 568.2
Total AFS securities |  |  | 2,940.9 |  |  | 83.3 |  |  | (4.0) |  |  | 3,020.2
Other |  |  | 26.4 |  |  | 7.7 |  |  | (0.1) |  |  | 34.0
Total funds held for clients and corporate investments |  | $ | 3,706.9 |  | $ | 91.0 |  | $ | (4.1) |  | $ | 3,793.8
|  | May 31, 2020
|  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Fair
In millions |  | cost |  | gains |  | losses |  | value
Type of issue: |  |  |  |  |  |  |  |  |  |  |  |
Funds held for clients' money market securities and other ‎ restricted cash equivalents |  | $ | 683.5 |  | $ | — |  | $ | — |  | $ | 683.5
AFS securities: |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  |  | 68.0 |  |  | 1.7 |  |  | — |  |  | 69.7
Corporate bonds |  |  | 649.6 |  |  | 34.1 |  |  | (0.1) |  |  | 683.6
Municipal bonds |  |  | 1,373.8 |  |  | 37.4 |  |  | (1.6) |  |  | 1,409.6
U.S. government agency and treasury securities |  |  | 565.8 |  |  | 28.5 |  |  | — |  |  | 594.3
Total AFS securities |  |  | 2,657.2 |  |  | 101.7 |  |  | (1.7) |  |  | 2,757.2
Other |  |  | 25.4 |  |  | 2.2 |  |  | (0.4) |  |  | 27.2
Total funds held for clients and corporate investments |  | $ | 3,366.1 |  | $ | 103.9 |  | $ | (2.1) |  | $ | 3,467.9
Classification of Investments on Consolidated Balance Sheets |
|  | May 31,
In millions |  | 2021 |  | 2020
Funds held for clients |  | $ | 3,750.0 |  | $ | 3,430.5
Corporate investments |  |  | 36.7 |  |  | 27.2
Long-term corporate investments |  |  | 7.1 |  |  | 10.2
Total funds held for clients and corporate investments |  | $ | 3,793.8 |  | $ | 3,467.9
Securities in Unrealized Loss Position |
|  | May 31, 2021
|  | Securities in an unrealized ‎loss position for less than ‎twelve months |  | Securities in an unrealized ‎loss position for more than ‎twelve months |  | Total
|  | Gross |  |  |  |  | Gross |  |  |  |  | Gross |  |  |
|  | unrealized |  | Fair |  | unrealized |  | Fair |  | unrealized |  | Fair
In millions |  | losses |  | value |  | losses |  | value |  | losses |  | value
Type of issue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  | $ | — |  | $ | 7.1 |  | $ | — |  | $ | — |  | $ | — |  | $ | 7.1
Corporate bonds |  |  | (0.2) |  |  | 22.0 |  |  | — |  |  | — |  |  | (0.2) |  |  | 22.0
Municipal bonds |  |  | (2.3) |  |  | 288.2 |  |  | — |  |  | — |  |  | (2.3) |  |  | 288.2
U.S. government agency and treasury securities |  |  | (1.5) |  |  | 102.6 |  |  | — |  |  | — |  |  | (1.5) |  |  | 102.6
Total |  | $ | (4.0) |  | $ | 419.9 |  | $ | — |  | $ | — |  | $ | (4.0) |  | $ | 419.9
|  | May 31, 2020
|  | Securities in an unrealized ‎loss position for less than ‎twelve months |  | Securities in an unrealized ‎loss position for more than ‎twelve months |  | Total
|  | Gross |  |  |  |  | Gross |  |  |  |  | Gross |  |  |
|  | unrealized |  | Fair |  | unrealized |  | Fair |  | unrealized |  | Fair
In millions |  | losses |  | value |  | losses |  | value |  | losses |  | value
Type of issue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | (0.1) |  | $ | 6.5 |  | $ | — |  | $ | — |  | $ | (0.1) |  | $ | 6.5
Municipal bonds |  |  | (1.6) |  |  | 60.3 |  |  | — |  |  | — |  |  | (1.6) |  |  | 60.3
Total |  | $ | (1.7) |  | $ | 66.8 |  | $ | — |  | $ | — |  | $ | (1.7) |  | $ | 66.8
Realized Gains and Losses from Sale of Available-for-sale Securities |
|  | Year ended May 31,
In millions |  | 2021 |  | 2020 |  | 2019
Gross realized gains |  | $ | 1.2 |  | $ | 11.6 |  | $ | 0.6
Gross realized losses |  |  | — |  |  | (0.3) |  |  | (0.6)
Net realized gains |  | $ | 1.2 |  | $ | 11.3 |  | $ | —
Amortized Cost and Fair Value of Available-for-Sale Securities by Contractual Maturity |
|  | May 31, 2021
|  | Amortized |  | Fair
In millions |  | cost |  | value
Maturity date: |  |  |  |  |  |
Due in one year or less |  | $ | 335.7 |  | $ | 338.6
Due after one year through three years |  |  | 731.6 |  |  | 759.0
Due after three years through five years |  |  | 970.6 |  |  | 1,008.3
Due after five years |  |  | 903.0 |  |  | 914.3
Total |  | $ | 2,940.9 |  | $ | 3,020.2

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