Revenue and Expense - Additional Information (Details) - Parent Company [Member] - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Management fee income	$ 3.0	$ 2.6	$ 2.3
Compensation expense	$ 3.0	$ 2.6	$ 2.3