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v3.25.1

Debt - Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2025 USD ($) note | Sep. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2025 USD ($) note | Mar. 31, 2024 USD ($) | Apr. 24, 2025 USD ($) | Apr. 02, 2025 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Number of fixed rate notes issued | note | 4 |  |  | 4 |  |  |
Debt face amount | $ 4,000.0 |  |  | $ 4,000.0 |  |  |
Notional amount of derivatives terminated |  | $ 1,000.0 |  |  |  |  |
Unamortized loss on cash flow hedges | 4.7 | 12.5 | $ 0.0 | 17.2 | $ 0.0 |  |
Fair value of notes issued | $ 3,739.8 |  |  | $ 3,739.8 |  |  |
Derivative Instrument, Termination One |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Notional amount of derivatives terminated |  | 400.0 |  |  |  |  |
Derivative Instrument, Termination Two |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Notional amount of derivatives terminated |  | 600.0 |  |  |  |  |
Fixed-rate 4.450% notes due September 9, 2034 | Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt face amount |  | $ 1,000.0 |  |  |  |  |
Stated interest rate | 4.45% | 4.45% |  | 4.45% |  |  |
Fixed-rate 3.375% notes due September 15, 2025 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Stated interest rate | 3.375% |  |  | 3.375% |  |  |
Fixed-rate 3.375% notes due September 15, 2025 | Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Stated interest rate | 3.375% |  |  | 3.375% |  |  |
Aggregate notional amount | $ 300.0 |  |  | $ 300.0 |  |  |
Fixed-rate 3.375% notes due September 15, 2025 | Senior Notes | Subsequent Event |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate notional amount |  |  |  |  |  | $ 50.0 | $ 50.0
Fixed-rate 3.375% notes due September 15, 2025 | Senior Notes | Treasury Lock | Subsequent Event |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate notional amount |  |  |  |  |  |  | $ 400.0
Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument, term |  |  |  | 7 years |  |  |
Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument, term |  |  |  | 10 years |  |  |

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