Service Revenue (Summary of Changes in Deferred Costs to Obtain and Fulfill Contracts) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2023 |
May 31, 2022 |
May 31, 2021 |
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| Capitalized Contract Cost [Line Items] | |||
| Amortization | $ 219.1 | $ 202.1 | $ 191.4 |
| Costs To Fulfill Contracts [Member] | |||
| Capitalized Contract Cost [Line Items] | |||
| Balance, beginning of period | 72.3 | 69.3 | |
| Capitalization of costs | 28.9 | 28.0 | |
| Amortization | (25.9) | (25.0) | |
| Balance, end of period | 75.3 | 72.3 | 69.3 |
| Costs To Obtain Contracts [Member] | |||
| Capitalized Contract Cost [Line Items] | |||
| Balance, beginning of period | 550.2 | 488.2 | |
| Capitalization of costs | 240.5 | 239.1 | |
| Amortization | (193.2) | (177.1) | |
| Balance, end of period | $ 597.5 | $ 550.2 | $ 488.2 |
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- Definition Capitalized Contract Cost No definition available.
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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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