Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 5.3	$ 9.3	$ 9.5
Additions Charged to Costs and Expenses	1.3	1.3	0.7
Reductions	(0.2)	0.0	0.0
Other Changes Add (Deduct)	(0.8)	(5.3)	(0.9)
Balance at End of Period	5.6	5.3	9.3
Allowance for obsolete inventory
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	67.7	56.7	48.3
Additions Charged to Costs and Expenses	30.1	27.5	21.9
Reductions	2.4
Additions Through Acquisition		0.0	0.5
Other Changes Add (Deduct)	(14.1)	(16.5)	(14.0)
Balance at End of Period	81.3	67.7	56.7
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	16.1	14.6	10.4
Additions Charged to Costs and Expenses	2.1	3.3	4.3
Reductions	(1.2)	(1.8)	(0.1)
Balance at End of Period	$ 17.0	$ 16.1	$ 14.6