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v3.25.3

Schedule of Derivatives (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2026
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Cost of goods sold | $ 1,316.3 | $ 1,333.6 | $ 3,889.2 | $ 4,157.0 |
Other income (expense), net | 1.6 | (5.5) | 2.3 | (14.3) |
Interest expense | (42.7) | (45.2) | (128.7) | (142.1) |
Gain (loss) on Business Combination Derivative | (16.0) | 0.0 | 52.2 | 0.0 |
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain | 1.1 |  | 4.8 |  |
Derivative Instruments Not Designated as Hedging Instruments, Loss |  | (1.9) |  | (3.6) |
Foreign Exchange Forward [Member] | Dowlais Group plc | Not Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Gain (loss) on Business Combination Derivative | (16.0) | 0.0 | 52.2 | 0.0 |
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 1.6 | $ 2.0 | $ (4.4) | $ 12.4 |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of goods sold | Cost of goods sold | Cost of goods sold | Cost of goods sold |
Foreign Exchange Forward [Member] | Cost of Sales [Member] | Cash Flow Hedging [Member] | Forecast [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Cash flow hedge gain (loss) to be reclassified within twelve months |  |  |  |  | $ 7.1
Currency Swap [Member] | Fair Value Hedging | Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 0.9 | $ (7.4) | $ (24.1) | $ (0.4) |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other income (expense), net | Other income (expense), net | Other income (expense), net | Other income (expense), net |
Currency Swap [Member] | Nonoperating Income (Expense) [Member] | Fair Value Hedging | Forecast [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Cash flow hedge gain (loss) to be reclassified within twelve months |  |  |  |  | 0.0
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 0.1 | $ 1.2 | $ 1.5 | $ 2.6 |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Interest expense | Interest expense | Interest expense | Interest expense |
Interest Rate Swap [Member] | Interest Expense [Member] | Cash Flow Hedging [Member] | Forecast [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Cash flow hedge gain (loss) to be reclassified within twelve months |  |  |  |  | $ (0.3)

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