Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2016
Income Taxes [Line Items]
Additional income tax expense due to TCJA	$ 84,300	$ 3,000
Deferred tax liability due to TCJA			$ 73,900
Deferred tax asset due to TCJA			10,400
Undistributed earnings of foreign subsidiaries					$ 452,600
Amount of indefinitely reinvested foreign earnings					452,600
Deferred tax assets, valuation allowance		251			1,086
Unrecognized tax benefits that would impact effective tax rate					43,900
Unrecognized tax benefits	$ 47,656	33,262	$ 47,656		46,650	$ 46,384
Deferred Tax Assets, Net		$ 64,223			63,917
Foreign Country
Income Taxes [Line Items]
Net operating loss carryforwards					$ 82,100
Scenario, Forecast [Member] | Subsequent Event | Maximum | SWITZERLAND
Income Taxes [Line Items]
Deferred Tax Assets, Net				$ 1,600,000