Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for doubtful accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 9.0	$ 8.7	$ 4.7
Additions Charged to Costs and Expenses	3.3	1.7	4.2
Other Changes Add (Deduct)	(1.6)	(1.4)	(0.2)
Balance at End of Period	10.7	9.0	8.7
Allowance for obsolete inventory
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	95.1	86.7	74.1
Additions Charged to Costs and Expenses	42.4	34.6	32.0
Other Changes Add (Deduct)	(27.9)	(26.2)	(19.4)
Balance at End of Period	109.6	95.1	86.7
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	16.9	16.6	17.0
Additions Charged to Costs and Expenses	5.5	1.5	0.7
Reductions	(1.0)	(1.2)	(1.1)
Balance at End of Period	$ 21.4	$ 16.9	$ 16.6