Premises and Equipment (Premises and Equipment) (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Land	$ 224,290	$ 191,594
Buildings	644,240	581,745
Technology, furniture and equipment	281,697	262,666
Leasehold improvements	250,572	230,642
Construction and projects in progress	24,135	36,910
Operating lease, right-of-use asset	270,282	280,502
Premises and equipment, Gross	1,695,216	1,584,059
Less accumulated depreciation and amortization	(449,839)	(394,026)
Total premises and equipment, net	$ 1,245,377	$ 1,190,033