Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards
Open Tax Year	2014
Impact of converting to a corporation	$ 5.6
Statutory U.S. federal income tax rate	21.00%	21.00%	35.00%
Impact of TCJA on Deferred Income Tax Assets			$ 280.8
Impact of TCJA from Revaluation of Deferred Income Tax Assets			190.4
Impact of TCJA on TRA Liability			90.4
Pre-tax income generated in foreign jurisdictions	$ 17.7	$ 8.2	$ 21.3
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 4.8
Foreign Country
Operating Loss Carryforwards
Open Tax Year	2007
State and Local Jurisdiction
Operating Loss Carryforwards
Open Tax Year	2012
Minimum | Internal Revenue Service (IRS)
Operating Loss Carryforwards
Tax credit carryforwards expiration date	Dec. 31, 2020
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2030
Minimum | State and Local Jurisdiction
Operating Loss Carryforwards
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2035
Maximum | Internal Revenue Service (IRS)
Operating Loss Carryforwards
Tax credit carryforwards expiration date	Dec. 31, 2026
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2037
Maximum | State and Local Jurisdiction
Operating Loss Carryforwards
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2039
Internal Revenue Service (IRS)
Operating Loss Carryforwards
Tax credit carryforwards	$ 14.7
Operating loss carryforwards, subject to expiration	243.1
Internal Revenue Service (IRS) | Minimum
Operating Loss Carryforwards
Operating loss carryforwards, not subject to expiration	71.4
State Income Tax | Minimum
Operating Loss Carryforwards
Operating loss carryforwards, subject to expiration	153.5
Local Income Tax | Minimum
Operating Loss Carryforwards
Operating loss carryforwards, subject to expiration	$ 149.7