Summary of Impact of Translating Financial Statements of Company's International Subsidiaries (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021
Foreign Currency Translation [Line Items]
Other comprehensive Loss	$ (15.7)	$ 8.3	$ (1.3)	$ (1.2)
Brazil
Foreign Currency Translation [Line Items]
Exchange Rate	5.2		5.2		5.6
Other comprehensive Loss			$ 2.4	2.8
Chile
Foreign Currency Translation [Line Items]
Exchange Rate	926.1		926.1		852.0
Other comprehensive Loss			$ (5.2)	(1.4)
Peru
Foreign Currency Translation [Line Items]
Exchange Rate	3.9		3.9		4.0
Other comprehensive Loss			$ 1.0	(2.0)
Other foreign countries
Foreign Currency Translation [Line Items]
Other comprehensive Loss			$ (0.5)	$ (0.6)