Income Taxes - Reconciliation of United States Federal Statutory Tax Rate to Effective Tax Rate on Income Before Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. statutory tax rate	21.00%	21.00%	21.00%
State and local taxes, net of federal tax benefit	1.50%	2.30%	2.20%
Benefit of foreign operations	(1.50%)	(1.50%)	(0.10%)
Other	(1.40%)	(1.50%)	(2.10%)
Effective tax rate	19.60%	20.30%	21.00%
Income tax paid	$ 932	$ 514	$ 458