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v3.22.4

Stockholders' Equity (Narrative) (Details) $ / shares in Units, $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Apr. 22, 2021 shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 shares | Dec. 31, 2018
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Treasury stock shares |  | 6,300,000 | 5,100,000 |  |
Treasury stock, Cost basis | $ |  | $ 238.6 | $ 175.8 |  |
Shares repurchased |  | 1,204,368 | 449,876 | 315,851 |
Minimum risk-based capital ratio |  | 0.0800 | 0.0800 |  | 0.080
Minimum Tier 1 common equity |  | 4.50% | 4.50% |  | 4.50%
Minimum Tier 1 capital ratio |  | 0.0600 | 0.0600 |  | 0.060
Minimum Tier 1 leverage capital ratio |  | 0.0400 | 0.0400 |  | 0.040
Well capitalized total risk based capital ratio |  | 0.1000 | 0.1000 |  | 0.100
Well capitalized Tier 1 common equity |  | 6.50% | 6.50% |  | 6.50%
Well capitalized Tier 1 risk-based capital ratio |  | 0.0800 | 0.0800 |  | 0.080
Well capitalized Tier 1 leverage capital ratio |  | 0.0500 | 0.0500 |  | 0.050
Minimum requirement of capital conservation buffer ratio |  | 2.50% |  |  |
Topic 326 [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Regulatory capital modified transition amount percentage |  | 25.00% |  |  |
Impact of modified transition amount | $ |  |  | $ 24.9 |  |
Impact of modified transition amount net of tax | $ |  |  | $ 44.1 |  |
Topic 326 [Member] | Regulatory Capital Transition For 2020 and 2021 [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Regulatory capital transition percentage |  | 0.00% |  |  |
Topic 326 [Member] | Regulatory Capital Three Year Transition, Year 2022 [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Regulatory capital transition percentage |  | 25.00% |  |  |
Topic 326 [Member] | Regulatory Capital Three Year Transition, Year 2023 [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Regulatory capital transition percentage |  | 50.00% |  |  |
Topic 326 [Member] | Regulatory Capital Three Year Transition, Year 2024 [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Regulatory capital transition percentage |  | 75.00% |  |  |
Topic 326 [Member] | Regulatory Capital Three Year Transition, Year 2024 and Thereafter [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Regulatory capital transition percentage |  | 100.00% |  |  |
Bank Holding Companies and Banks that Meet Certain Criteria [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Minimum Tier 1 leverage capital ratio |  |  |  |  | 0.030
Accelerated Share Repurchase Agreement | Common Stock [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Shares repurchased |  | 1,654,244 |  |  |
Shares purchased average cost per share | $ / shares |  | $ 48.77 |  |  |
2018 Stock Buyback Program [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Number of shares authorized for repurchase | 4,300,000 |  |  |  |
Stock repurchase expiration date | Dec. 31, 2022 |  |  |  |
2018 Stock Buyback Program [Member] | Common Stock [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Shares repurchased |  | 1,204,368 |  |  |
Shares purchased average cost per share | $ / shares |  | $ 48.90 |  |  |
Restricted Stock [Member] |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Number of shares nonvested |  | 700,000 | 1,100,000 |  |

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