Short-term Financing (Credit Facility Amount Borrowed) (Details) - Revolving Credit Facility [Member] - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Aug. 31, 2017 |
Aug. 31, 2016 |
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| JPM $1 Billion Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | ||
| Line of Credit Facility [Line Items] | ||
| Number of days borrowed | 13 days | 4 days |
| Maximum amount borrowed | $ 660.0 | $ 350.0 |
| Weighted-average amount borrowed | $ 278.8 | $ 237.5 |
| Weighted-average interest rate | 4.23% | 3.50% |
| PNC $150 Million Credit Facility [Member] | PNC Bank, National Association [Member] | ||
| Line of Credit Facility [Line Items] | ||
| Number of days borrowed | 88 days | 84 days |
| Maximum amount borrowed | $ 57.2 | $ 51.3 |
| Weighted-average amount borrowed | $ 55.8 | $ 51.3 |
| Weighted-average interest rate | 1.67% | 1.01% |
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- Definition Line of Credit Facility, Number Of Days Borrowed No definition available.
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- Definition Average amount borrowed under the credit facility during the period. No definition available.
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- Definition The effective interest rate during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 Maximum amount borrowed under the credit facility at any time during the period. No definition available.
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