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Shareholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended | 246 Months Ended
--- | --- | --- | ---
Jun. 15, 2021 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) yr $ / shares shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2021 USD ($) $ / shares shares
Dividends |  |  |  |  |
Number of prior calendar years considered for payment of dividends in excess of the sum of net income | yr |  | 2 |  |  |
Common Stock Repurchase Program |  |  |  |  |
Number of shares of common stock repurchased | shares |  | 328,832 |  |  | 57,400,000
Amount returned to shareholders on stock repurchase | $ |  | $ 31,258 | $ 18,006 | $ 137,649 | $ 2,300,000
Average cost of shares repurchased (in dollars per share) |  | $ 83.14 |  |  | $ 40.76
Treasury Stock Value Acquired Cost Method Share Repurchase Program | $ |  | $ 27,300 |  |  |
Preferred Stock, par value (in dollars per share) |  | $ 0.01 |  |  | $ 0.01
Net proceeds, after underwriting discounts and expenses | $ |  | $ 175,487 |  |  |
Depositary Shares |  |  |  |  |
Common Stock Repurchase Program |  |  |  |  |
Shares issued and sold | shares | 7,200,000 |  |  |  |
Preferred stock, redemption price per share | $ 25 |  |  |  |
4.375% Fixed Rate Non-Cumulative Perpetual Preferred Stock |  |  |  |  |
Common Stock Repurchase Program |  |  |  |  |
Percentage of ownership interest in share | 0.025% |  |  |  |
Series A Preferred Stock |  |  |  |  |
Common Stock Repurchase Program |  |  |  |  |
Preferred stock, dividend rate, percentage per annum | 4.375% |  |  |  |
Preferred Stock, par value (in dollars per share) | $ 0.01 |  |  |  |
Preferred stock, liquidation preference per share | $ 1,000 |  |  |  |
Net proceeds, after underwriting discounts and expenses | $ | $ 175,500 |  |  |  |
Preferred stock, voting rights | Holders of the Series A Preferred Stock will not have voting rights |  |  |  |
Preferred stock, redemption price per share | $ 1,000 |  |  |  |
Preferred Stock, redemption date | Aug. 01, 2026 |  |  |  |
Preferred Stock, Redemption Terms | The Company may redeem the Series A Preferred Stock at its option, (i) in whole or in part, from time to time, on any dividend payment date on or after August 1, 2026 or (ii) in whole but not in part, at any time within 90 days following a regulatory capital treatment event, in either case at a redemption price equal to $1,000 per share (equivalent to $25 per depositary share), plus any declared and unpaid dividends. |  |  |  |
Accounting Standards Update 2016-13 |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Percentage of allowance for credit losses after-tax |  | 25.00% |  |  |
Regulatory capital commencing period |  | Jan. 01, 2022 |  |  |
Percentage of allowance for credit losses pre-tax |  | 25.00% |  |  |
Percentage of cumulative adjustment to allowance for credit losses |  | 25.00% |  |  |
Minimum |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Additional Tier 1 capital ratio |  | 2.5 |  |  | 2.5

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