Share-Based Payment Arrangements (Narrative) (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) Entity $ / shares shares
Restricted and Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense | $	$ 65.0
Weighted-average period	3 years 4 months 24 days
Total fair value of shares vested | $	$ 16.0
Shares granted	751,122
Grant date fair value per share | $ / shares	$ 42.07
Performance Shares [Member] | Executive Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period	3 years
Performance Shares [Member] | Total Shareholder Return [Member] | Executive Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	47,734
Grant date fair value per share | $ / shares	$ 43.23
Vesting performance period	3 years
Number of peer group regional banks | Entity	49
Performance Shares [Member] | Total Shareholder Return [Member] | Executive Management [Member] | Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of maximum number of shares vested	200.00%
Performance Shares [Member] | Adjusted Earnings Per Share [Member] | Executive Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	47,734
Grant date fair value per share | $ / shares	$ 36.25
Vesting performance period	2 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	533,662