Real Estate - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Real Estate [Abstract]
Operating lease right-of-use assets	$ 726.1	$ 735.4
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Lease liabilities	$ 637.3	$ 638.8
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities