Derivative Instruments and Hedging Activities - Gross Unrealized Losses from Derivative Instruments (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Derivative Instruments Gain Loss [Line Items] | |||
| Amount of Gain / (Loss) Recognized in AOCI | $ (6.7) | $ 116.0 | $ 84.8 |
| Amount of Gain / (Loss) Reclassified from AOCI | 55.6 | 84.6 | 93.4 |
| Cash Flow Hedges [Member] | |||
| Derivative Instruments Gain Loss [Line Items] | |||
| Amount of Gain / (Loss) Recognized in AOCI | (6.7) | 116.0 | 84.8 |
| Amount of Gain / (Loss) Reclassified from AOCI | 55.6 | 84.6 | 93.4 |
| Cash Flow Hedges [Member] | Foreign Exchange Forward Contracts [Member] | |||
| Derivative Instruments Gain Loss [Line Items] | |||
| Amount of Gain / (Loss) Recognized in AOCI | (6.7) | 116.0 | 84.8 |
| Amount of Gain / (Loss) Reclassified from AOCI | 56.3 | 85.3 | 94.1 |
| Cash Flow Hedges [Member] | Forward Starting Interest Rate Swaps [Member] | |||
| Derivative Instruments Gain Loss [Line Items] | |||
| Amount of Gain / (Loss) Reclassified from AOCI | $ (0.7) | $ (0.7) | $ (0.7) |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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