Revenue Recognition - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Period for credit risk identified		30 days
Sales revenues totaling	$ 2.4	$ 8.8
Lease revenue	136.5	381.8
Operating lease revenue	136.2	379.7
Finance lease revenue	0.3	2.1
Finance lease revenue, sales revenue	0.2	1.8
Finance lease revenue, interest income	0.1	$ 0.3
Period for warranties for rental equipment		90 days
Period for warranties for equipment manufactured		1 year
Deferred Income [Member]
Disaggregation Of Revenue [Line Items]
Customer contract liability	35.8	$ 35.8	$ 16.8
Accounts Receivable [Member]
Disaggregation Of Revenue [Line Items]
Unbilled contract assets	$ 1.0	$ 1.0	$ 1.3