Schedule - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Allowance for Doubtful Accounts [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 93.2	$ 75.1	$ 78.4
Additions Charged (Credited) to Expense	31.3	29.3	5.1
Deductions / Other Additions to Reserve	(21.8)	(7.1)	(5.1)
Effects of Foreign Currency	7.1	(4.1)	(3.3)
Balance at End of Period	109.8	93.2	75.1
Deferred Tax Asset Valuation Allowances [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	449.4	464.6	463.2
Additions Charged (Credited) to Expense	(2.3)	(3.9)	(3.1)
Deductions / Other Additions to Reserve	123.9	(7.9)	3.7
Effects of Foreign Currency	2.0	(3.4)	0.8
Balance at End of Period	$ 573.0	$ 449.4	$ 464.6