Derivative Financial Instruments - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended
	Dec. 31, 2018	Jan. 31, 2017	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2023
Cross Currency Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, term of contract	5 years
Notional Amount	$ 600,000,000.0
Fixed Rate	4.8255%
Proceeds from cross-currency interest rate swaps upon termination				$ 56,200,000
Paid termination fees				900,000
Gain (loss) in AOCIL						$ 31,300,000		$ 19,800,000
AOCIL tax expense (benefit)						9,900,000		3,600,000
Cross Currency Interest Rate Swap [Member] | Interest Income [Member]
Derivative [Line Items]
Cumulative translation adjustment recognized net interest income (expense), net amount				$ 3,300,000
Cross Currency Interest Rate Swap [Member] | Forecast [Member]
Derivative [Line Items]
Notional Amount									$ 360,000,000.0
Cross Currency Interest Rate Swap [Member] | Euro [Member] | Minimum [Member]
Derivative [Line Items]
Variable Rate	2.19%
Cross Currency Interest Rate Swap [Member] | Euro [Member] | Maximum [Member]
Derivative [Line Items]
Variable Rate	2.315%
Interest Rate Swap [Member]
Derivative [Line Items]
Notional Amount	$ 600,000,000
Fixed Rate	4.8255%
Paid termination fees			$ 100,000
Gain (loss) in AOCIL			(11,900,000)					(9,800,000)
AOCIL tax expense (benefit)			(3,800,000)					$ (1,700,000)
Maturity date of interest rate swap		Jan. 31, 2020
Fair value of swap			34,700,000			34,700,000
Net interest expense			100,000
Reclassification of AOCIL in to interest expense			3,200,000		$ 500,000	4,800,000	$ 1,000,000.0
Non cash interest expense related to termination of interest rate swap			$ 2,200,000			$ 2,200,000