Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for estimated credit losses/ doubtful accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		$ 5.9	$ 4.7	$ 3.3
Charged to costs and expenses			1.2	1.4
Deductions- describe	[1]	0.1
Balance at end of period		5.8	5.9	4.7
Allowance for estimated credit losses on notes receivable/ uncollectible notes receivable
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		0.4
Charged to costs and expenses			0.4
Deductions- describe	[1]	0.3
Balance at end of period		0.1	0.4
Inventory valuation allowance
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		180.3	168.6	159.2
Charged to costs and expenses		65.2	51.3	38.8
Charged to other accounts-describe	[2]	9.6
Deductions- describe	[3]	40.8	39.6	29.4
Balance at end of period		$ 214.3	$ 180.3	$ 168.6

[1] Application of reserve policy to acquired inventories/customer receivables

[2] Sale of reserved inventory and divestitures

[3] Change in estimates