Income Taxes - Schedule of Reconciliation of U.S. Federal Statutory Income Tax Rate to Effective Tax Rates (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%	35.00%
U.S. tax reform	3.00%	1.00%	43.40%
Foreign source income not subject to U.S. income tax	(5.30%)	(2.20%)	(4.20%)
Change in U.S. federal valuation allowance	0.60%	2.10%	(3.40%)
Share-based incentive compensation	(2.90%)	(5.00%)	(4.00%)
Foreign taxes	5.80%	5.40%	1.90%
Foreign tax credits	(2.60%)	(4.30%)	(2.00%)
State and local taxes	2.40%	1.70%	2.50%
Income of non-controlling interests	(0.50%)	(0.10%)	(0.30%)
Uncertain tax positions	1.80%	0.20%	(0.40%)
Other	0.90%	2.00%
Effective income tax rate	24.20%	21.80%	68.50%