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Derivative Instruments and Hedging Activities - Interest Rate Swaps (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2024 | Mar. 31, 2024 | Mar. 31, 2023 | Sep. 30, 2024
Cash Flow Hedging | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | $ 1,700.0 |  |  |  |
Cash Flow Hedging | Tranche One | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | 300.0 |  |  |  |
Cash Flow Hedging | Tranche Two | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | 700.0 |  |  |  |
Cash Flow Hedging | Tranche Three | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | 200.0 |  |  |  |
Cash Flow Hedging | Tranche Four | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | 300.0 |  |  |  |
Cash Flow Hedging | Tranche Five | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | 50.0 |  |  |  |
Cash Flow Hedging | Tranche Six | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | 100.0 |  |  |  |
Cash Flow Hedging | Tranche Seven | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | 50.0 |  |  |  |
Designated as Hedging Instrument | Interest rate swaps |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  | $ 1,700.0 |  |  |  | $ 1,700.0
Designated as Hedging Instrument | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 2.915%, Effective Date May 23, 2018 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  |  | 2.915% |  |  |  |
Notional Amount |  |  | $ 300.0 |  |  |  |
Designated as Hedging Instrument | Interest rate swaps | Interest Rate Swap 2, Fixed Rate Paid 2.915%, Effective Date May 23, 2018 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  |  | 2.915% |  |  |  |
Notional Amount |  |  | $ 700.0 |  |  |  |
Designated as Hedging Instrument | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 2.723%, Effective Date June 25, 2018 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  |  | 2.723% |  |  |  |
Notional Amount |  |  | $ 200.0 |  |  |  |
Designated as Hedging Instrument | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 2.885%, Effective Date July 31, 2018 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  |  | 2.885% |  |  |  |
Notional Amount |  |  | $ 300.0 |  |  |  |
Designated as Hedging Instrument | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 2.744%, Effective Date December 24, 2018 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  |  | 2.744% |  |  |  |
Notional Amount |  |  | $ 50.0 |  |  |  |
Designated as Hedging Instrument | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 2.808%, Effective Date December 24, 2018 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  |  | 2.808% |  |  |  |
Notional Amount |  |  | $ 100.0 |  |  |  |
Designated as Hedging Instrument | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 2.728%, Effective Date December 24, 2018 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  |  | 2.728% |  |  |  |
Notional Amount |  |  | $ 50.0 |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  |  |  |  | $ 1,700.0 |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Notional Amount |  | $ 345.0 |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 4.045%, Effective Date August 15, 2024 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  | 4.045% |  |  |  |  |
Notional Amount |  | $ 65.0 |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 3.803%, Effective Date August 15, 2024 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  | 3.803% |  |  |  |  |
Notional Amount |  | $ 77.5 |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 3.810%, Effective Date August 15, 2024 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  | 3.81% |  |  |  |  |
Notional Amount |  | $ 77.5 |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Interest Rate Swap, Fixed Rate Paid 3.970%, Effective Date December 15, 2024 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Fixed Rate Paid (as percent) |  | 3.97% |  |  |  |  |
Notional Amount |  | $ 125.0 |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Tranche One | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Effective Date |  | Aug. 15, 2024 | May 23, 2018 |  | May 23, 2018 |  |
Notional Amount |  |  |  |  | $ 300.0 |  |
Fixed Rate Paid (as percent) |  |  | 2.915% |  | 2.915% |  |
Maturity Date |  | Sep. 15, 2026 | Mar. 24, 2025 |  | Mar. 24, 2025 |  |
Designated as Hedging Instrument | Cash Flow Hedging | Tranche Two | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Effective Date |  | Aug. 15, 2024 | May 23, 2018 |  | May 23, 2018 |  |
Notional Amount |  |  |  |  | $ 700.0 |  |
Fixed Rate Paid (as percent) |  |  | 2.915% |  | 2.915% |  |
Maturity Date |  | Aug. 15, 2026 | Mar. 24, 2025 | [1] | Mar. 24, 2025 | [1] |
Designated as Hedging Instrument | Cash Flow Hedging | Tranche Three | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Effective Date |  | Aug. 15, 2024 | Jun. 25, 2018 |  | Jun. 25, 2018 |  |
Notional Amount |  |  |  |  | $ 200.0 |  |
Fixed Rate Paid (as percent) |  |  | 2.723% |  | 2.723% |  |
Maturity Date |  | Sep. 15, 2026 | Mar. 23, 2025 | [1] | Mar. 23, 2025 | [1] |
Designated as Hedging Instrument | Cash Flow Hedging | Tranche Four | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Effective Date |  | Dec. 15, 2024 | Jul. 31, 2018 |  | Jul. 31, 2018 |  |
Notional Amount |  |  |  |  | $ 300.0 |  |
Fixed Rate Paid (as percent) |  |  | 2.885% |  | 2.885% |  |
Maturity Date |  | Dec. 15, 2026 | Mar. 23, 2025 | [1] | Mar. 23, 2025 | [1] |
Designated as Hedging Instrument | Cash Flow Hedging | Tranche Five | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Effective Date |  |  | Dec. 24, 2018 |  | Dec. 24, 2018 |  |
Notional Amount |  |  |  |  | $ 50.0 |  |
Fixed Rate Paid (as percent) |  |  | 2.744% |  | 2.744% |  |
Maturity Date | [1] |  | Mar. 23, 2025 |  | Mar. 23, 2025 |  |
Designated as Hedging Instrument | Cash Flow Hedging | Tranche Six | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Effective Date |  |  | Dec. 24, 2018 |  | Dec. 24, 2018 |  |
Notional Amount |  |  |  |  | $ 100.0 |  |
Fixed Rate Paid (as percent) |  |  | 2.808% |  | 2.808% |  |
Maturity Date | [1] |  | Mar. 23, 2025 |  | Mar. 23, 2025 |  |
Designated as Hedging Instrument | Cash Flow Hedging | Tranche Seven | Interest Rate Swaption |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Effective Date |  |  | Dec. 24, 2018 |  | Dec. 24, 2018 |  |
Notional Amount |  |  |  |  | $ 50.0 |  |
Fixed Rate Paid (as percent) |  |  | 2.728% |  | 2.728% |  |
Maturity Date | [1] |  | Mar. 23, 2025 |  | Mar. 23, 2025 |  |
[1] | Represents the re-designated swaps as described in the May 2022 Transactions section below that were previously not designated cash flow hedges at March 31, 2022

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