Reconciliation of Federal Statutory Tax Rate to Effective Income Tax Rate (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Examination [Line Items]
Statutory U.S. federal income tax rate	21.00%	21.00%	21.00%	21.00%
Tax on income from terminated swaps	5.60%	2.30%	3.60%	2.70%
Reduction in uncertain tax positions	0.00%	(5.70%)	0.00%	(2.30%)
Non-deductible expenses	1.20%	0.40%	0.70%	0.50%
Other, net	0.20%	0.00%	0.20%	(0.20%)
Effective rate	28.00%	18.00%	25.50%	21.70%