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LONG-TERM DEBT - Credit Agreement (Details) |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2023 | Jul. 31, 2020 | Apr. 30, 2019 USD ($) | Apr. 30, 2018 USD ($) | Apr. 30, 2019 USD ($) | Apr. 30, 2018 USD ($) | Oct. 31, 2018 USD ($) | Feb. 11, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt |  |  | $ 2,950,400,000 |  | $ 2,950,400,000 |  | $ 907,600,000 |
Current portion of long-term debt |  |  | 83,800,000 |  | 83,800,000 |  | 18,800,000 |
Long-term debt, excluding current maturities |  |  | 2,851,800,000 |  | 2,851,800,000 |  | 884,100,000 |
Debt extinguishment charges |  |  | 21,900,000 | $ 0 | 21,900,000 | $ 0 |  |
2019 Credit Agreement |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt |  |  | 1,974,100,000 |  | 1,974,100,000 |  |  |
Secured Term Loan A-1 Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  | $ 1,275,000,000.0
Secured Term Loan A-2 Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  | 400,000,000.0
Senior Notes due 2027 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  | 700,000,000.0
Revolving Credit Facility | 2017 Credit Agreement |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | 800,000,000.0
Long-term debt |  |  | 0 |  | 0 |  | 3,800,000 |
Debt extinguishment charges |  |  | 800,000 |  |  |  |  |
Revolving Credit Facility | 2019 Credit Agreement |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | 800,000,000.0
Long-term debt |  |  | 320,000,000 |  | 320,000,000 |  | $ 0 |
Current portion of long-term debt |  |  | 83,800,000 |  | 83,800,000 |  |  |
Long-term debt, excluding current maturities |  |  | $ 1,890,300,000 |  | $ 1,890,300,000 |  |  |
Weighted average interest rate |  |  | 4.10% |  | 4.10% |  |  |
Actual interest rate |  |  | 4.22% |  | 4.22% |  |  |
Debt issuance costs |  |  | $ 8,900,000 |  | $ 8,900,000 |  |  |
Debt extinguishment charges |  |  | 5,400,000 |  |  |  |  |
Revolving Credit Facility | Multicurrency Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | 600,000,000.0
Revolving Credit Facility | U.S. Dollar Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | $ 200,000,000.0
Term Loan | 2019 Credit Agreement |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt issuance costs |  |  | $ 12,000,000 |  | $ 12,000,000 |  |  |
Minimum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument covenant EBITDA |  |  |  |  |  |  | 4.75 |
Maximum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest coverage ratio, adjusted EBITDA |  |  |  |  |  |  | 3.00 |
Scenario, Forecast |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument Covenant EBITDA, ratio step down |  | 0.25 |  |  |  |  |  |
Scenario, Forecast | Minimum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument covenant EBITDA | 4.00 |  |  |  |  |  |  |

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