Fair Value Measurements - Changes in Level 3 Assets and Liabilities Measured at Estimated Fair Value on Recurring Basis (Detail) - Fair Value Measurements, Recurring [Member] - Significant Unobservable Inputs (Level 3) [Member] - Other Assets and Other Liabilities [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ (37,178)	$ (24,181)	$ (45,573)	$ 6,440
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Included in earnings	$ (10,155)	$ (9,321)	$ 6,301	$ (34,630)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Including Assessed Tax	Revenue from Contract with Customer, Including Assessed Tax	Revenue from Contract with Customer, Including Assessed Tax	Revenue from Contract with Customer, Including Assessed Tax
Transfers out of Level 3	$ (4,070)	$ (14,804)	$ (12,131)	$ (20,116)
Ending Balance	(51,403)	(48,306)	(51,403)	(48,306)
Changes in net unrealized gains (losses) included in earnings related to instruments still held at period end	$ (12,957)	$ (17,160)	$ (12,341)	$ (48,108)