Revenue from Contracts with Customers - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Receivables related to revenue from contract with customer	$ 820,900,000		$ 778,400,000
Impairments related to revenue receivables	0	$ 0
Deferred revenue	15,900,000		12,900,000
Deferred revenue recognized	6,400,000	$ 6,300,000
Capitalized costs	$ 1,400,000		$ 1,400,000