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v3.23.1

Financial Instruments (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 2 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 31, 2022 | May 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Derivative [Line Items] |  |  |  |  |  |
Remaining maturity of forward foreign exchange contracts, maximum |  |  | 30 months |  |  |
Reduction of asset value of derivative | $ 188.7 |  | $ (188.7) | $ 0.0 | $ 0.0 |
Unrealized gains in AOCI at time of termination |  |  | (786.0) | (2,683.4) | (2,794.6) | $ (2,660.0)
Net Cash Provided by (Used in) Operating Activities |  |  | (114.3) | (660.9) | (0.5) |
Net Cash Provided by (Used in) Financing Activities |  |  | (63.8) | (599.4) | (237.9) |
Foreign currency cash flow hedge gain estimated to be reclassified into earnings during next 12 months |  |  | 2.9 |  |  |
Interest rate swap cash flow hedge loss estimated to be reclassified into earnings during next 12 months |  |  | 23.5 |  |  |
Interest Rate Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Proceeds from terminated swaps | 56.4 |  |  |  |  |
Reduction of debt host | 131.3 | $ (3.2) |  |  |  |
Net Cash Provided by (Used in) Operating Activities | 188.7 |  |  |  |  |
Net Cash Provided by (Used in) Financing Activities | 134.5 |  |  |  |  |
Gross amount of swaps in an asset position subject to master netting arrangement |  |  |  | 169.6 |  |
Gross amount of swaps in an liability position subject to master netting arrangement |  |  |  | 147.3 |  |
Net asset of swaps subject to master netting arrangement |  |  |  | 32.0 |  |
Net liability of swaps subject to master netting arrangement |  |  |  | 9.8 |  |
Notional amount, de-designated |  |  |  |  | 1,400.0 |
Not Designated as Hedging Instrument | Interest Rate Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount entered into during period |  |  |  |  | 1,400.0 |
Designated as Hedging Instrument | Interest Rate Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount |  |  | 1,700.0 | 1,700.0 |  |
Derivative Liability | 6.8 | 6.8 |  |  |  |
Designated as Hedging Instrument | Interest Rate Swap | Interest Rate Swaps, Re-designated Swaps |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount |  |  | 1,400.0 |  |  |
Designated as Hedging Instrument | Interest Rate Swap | Interest Rate Swap, Fixed Rate Paid 2.915%, Effective Date May 23, 2018 |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount |  |  | $ 300.0 | $ 300.0 |  |
Accumulated Gain (Loss), Net, Cash Flow Hedge Discontinued, Including Noncontrolling Interest | Interest Rate Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Unrealized gains in AOCI at time of termination | $ 180.4 | $ 180.4 |  |  | $ 163.0 |

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