Revenue Recognition - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Period for credit risk identified		30 days
Sales revenues totaling	$ 4.2	$ 6.5
Lease revenue	126.8	245.3
Operating lease revenue	125.8	243.6
Finance lease revenue	1.0	1.7
Finance lease revenue, sales revenue	0.9	1.5
Finance lease revenue, interest income	0.1	$ 0.2
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	34.3	$ 34.3	$ 16.8
Accounts Receivable [Member]
Disaggregation Of Revenue [Line Items]
Unbilled contract assets	$ 1.8	$ 1.8	$ 1.3