Acquisitions and Dispositions - Disposals, Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 30, 2021	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other gains (losses), net
Discontinued Operations, Disposed of by Sale | First Bank Insurance Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for the sale	$ 13.0
Future earn-out payment	1.0
Cash received at the time of sale	11.3
Net assets sold and liabilities transferred	1.7
Gain on sale	1.7
Total intangible assets	10.2
Goodwill	7.4
Finite-lived intangible assets	$ 2.8