Acquisitions (Details 1) - USD ($)	Dec. 31, 2021	Oct. 08, 2021	Feb. 01, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Assets	$ 40,443,344,000			$ 29,498,442,000
Liabilities	36,443,714,000			25,903,491,000
Goodwill	$ 1,405,736,000			$ 1,078,670,000	$ 2,548,670,000
Civic Acquisition
Business Acquisition [Line Items]
Assets			$ 307,997,000
Liabilities			147,577,000
Cash paid			160,420,000
Goodwill			125,448,000
Homeowners Association Services Divison
Business Acquisition [Line Items]
Assets		$ 4,362,893,000
Liabilities		4,125,095,000
Cash paid		237,800,000	$ 237,798,000
Goodwill		201,618,000
Acquisition, Deposit Premium Paid to Acquired Institution		$ 0.059