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Borrowing Arrangements (Tables) | 3 Months Ended
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Apr. 30, 2020
Debt Disclosure [Abstract] |
Fair Value of Market Price | Based on the quoted market prices, the approximate fair value of the notes as of April 30, 2020, were as follows:
(in millions) | Aggregate Principal Amount |  | Fair value
2012 Notes | $ | 350.0 |  |  | $ | 366.9 |
$300 million 2015 Notes | 300.0 |  |  | 328.6 |
2017 Notes | 500.0 |  |  | 555.9 |
2020 Notes | 500.0 |  |  | 524.4 |
Future Minimum Payments For Borrowings | The expected future principal payments for all borrowings as of April 30, 2020, is as follows (in millions):
Fiscal year ending |
2021 (remainder) | — |
2022 | — |
2023 | 350.0 |
2024 | — |
2025 | — |
Thereafter | 1,300.0 |
Total principal outstanding | $ | 1,650.0 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of other investments not readily marketable, including, but not limited to, description of investment, fair value and value as measured by quoted price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 820 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35710923&loc=d3e45360-110995 + Details
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