Income Taxes - Reconciliation of Statutory U.S. Federal Income Tax Rate (Detail)	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Statutory U.S. federal income tax rate	21.00%	21.00%
Income passed through to noncontrolling interests	(9.04%)	21.52%
Nondeductible transaction costs	0.00%	(37.08%)
Tax effects of income recorded to equity in connection with the Recapitalization	0.00%	28.96%
Foreign income taxes	3.99%	(18.71%)
RSU excess income tax benefit or expense	0.63%	(18.52%)
State and local income taxes	1.44%	(13.64%)
Income not subject to entity level tax	0.00%	7.82%
Nondeductible amortization of Partner Equity Units	(2.31%)	(59.95%)
Nondeductible interest expense	(0.45%)	0.00%
Other, net	0.56%	8.08%
Effective Income Tax Rate	15.82%	(60.52%)

Effective Income Tax Rate Reconciliation, Nondeductible Amortization of Partner Equity Units

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Effective Income Tax Rate Reconciliation, Nondeductible Interest, Percent

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to noncontrolling interest income (loss) exempt from income taxes.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for share-based payment arrangement.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income (loss) exempt from income taxes.

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