Revenue Recognition - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Period for credit risk identified	30 days
Sales revenues totaling	$ 2.7
Lease revenue	102.2
Operating lease revenue	101.7
Finance lease revenue	0.5
Finance lease revenue, sales revenue	0.4
Finance lease revenue, interest income	$ 0.1
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	$ 28.4	$ 17.5
Accounts Receivable [Member]
Disaggregation Of Revenue [Line Items]
Unbilled contract assets	$ 0.7	$ 1.0