Goodwill and Other Assets (Textuals) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Goodwill [Line Items]
Amortization	$ 23.3	$ 24.3
Goodwill	702.2		$ 702.3
Global Retail [Member]
Goodwill [Line Items]
Goodwill	$ 212.4		212.4
Segment Reporting, Additional Information about Entity's Reportable Segments	34 percent
Global Banking
Goodwill [Line Items]
Goodwill	$ 489.8		$ 489.9
Segment Reporting, Additional Information about Entity's Reportable Segments	43 percent