Fair Value Measurements - Derivative Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value derivative assets	$ 6.3	$ 2.0
Fair value derivative liabilities	9.1	6.0
Foreign exchange currency contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value derivative assets	6.3	2.0
Fair value derivative liabilities	9.1	6.0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurements, assets total	6.3	2.0
Fair value measurements, liabilities total	9.1	6.0
Significant Other Observable Inputs (Level 2) [Member] \| Derivatives designated as hedging instruments [Member] \| Foreign exchange currency contracts relating to inventory and intercompany management fee hedges [Member] \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesCurrent
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value derivative liabilities	2.0	4.5
Significant Other Observable Inputs (Level 2) [Member] \| Derivatives designated as hedging instruments [Member] \| Foreign exchange currency contracts relating to inventory and intercompany management fee hedges [Member] \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value derivative assets	1.0	0.0
Significant Other Observable Inputs (Level 2) [Member] \| Derivatives not designated as hedging instruments [Member] \| Foreign exchange currency contracts [Member] \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesCurrent
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value derivative liabilities	7.1	1.5
Significant Other Observable Inputs (Level 2) [Member] \| Derivatives not designated as hedging instruments [Member] \| Foreign exchange currency contracts [Member] \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value derivative assets	$ 5.3	$ 2.0

Fair value portion of asset recognized for present right to economic benefit.

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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.

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Fair value of financial and nonfinancial obligations.

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