Stock Awards - Stock-based Award Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Vesting Based on Service [Member]
Employee Restricted Equity Awards Vesting Activity [Line Items]
Nonvested awards at beginning of the year, Shares	810,483	922,954
Awarded, Shares	1,210,448	659,393
Vested, Shares	(864,482)	(750,854)
Forfeited, Shares	(11,653)	(21,010)
Nonvested awards at end of year, Shares	1,144,796	810,483
Nonvested awards at beginning of the year, Weighted Average Value at Award Date	$ 21.02	$ 20.26
Awarded, Weighted Average Value at Award Date	10.36	21.18
Vested, Weighted Average Value at Award Date	16.60	20.25
Forfeited, Weighted Average Value at Award Date	12.27	20.06
Nonvested awards at end of year, Weighted Average Value at Award Date	$ 13.01	$ 21.02
Vesting Based on Market/Performance Conditions [Member]
Employee Restricted Equity Awards Vesting Activity [Line Items]
Nonvested awards at beginning of the year, Shares	4,349,081	5,477,536
Awarded, Shares	10,270,260	1,828,971
Vested, Shares	(1,591,846)	(2,924,722)
Forfeited, Shares	(450,703)	(32,704)
Nonvested awards at end of year, Shares	12,576,792	4,349,081
Nonvested awards at beginning of the year, Weighted Average Value at Award Date	$ 18.26	$ 15.86
Awarded, Weighted Average Value at Award Date	8.47	18.45
Vested, Weighted Average Value at Award Date	19.65	13.87
Forfeited, Weighted Average Value at Award Date	12.44	19.17
Nonvested awards at end of year, Weighted Average Value at Award Date	$ 10.20	$ 18.26