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Shareholders' Equity - Schedule of Stockholders Equity (Details) | 6 Months Ended
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Jun. 30, 2026 USD ($) $ / shares shares
Series D Preferred Stock |
Class of Stock [Line Items] |
Preferred stock, dividend rate (as a percent) | 5.00%
Preferred stock, amount outstanding | $ | $ 525,000,000
Book value (net of capital surplus) | $ | $ 519,000,000
Preferred stock, shares authorized (in shares) | shares | 21,000
Preferred stock, shares outstanding (in shares) | shares | 21,000
Preferred stock, par value (in usd per share) | $ / shares | $ 1
Liquidation preference | $ | $ 25,000
Ownership interest per depositary share ratio | 0.04
Preferred stock, liquidation preference per depositary share (in usd per share) | $ / shares | $ 1,000
Dividends paid per depositary share (in usd per share) | $ / shares | $ 12.50
Series E Preferred Stock |
Class of Stock [Line Items] |
Preferred stock, dividend rate (as a percent) | 6.125%
Preferred stock, amount outstanding | $ | $ 500,000,000
Book value (net of capital surplus) | $ | $ 490,000,000
Preferred stock, shares authorized (in shares) | shares | 500,000
Preferred stock, shares outstanding (in shares) | shares | 500,000
Preferred stock, par value (in usd per share) | $ / shares | $ 1
Liquidation preference | $ | $ 1,000
Ownership interest per depositary share ratio | 0.025
Preferred stock, liquidation preference per depositary share (in usd per share) | $ / shares | $ 25
Dividends paid per depositary share (in usd per share) | $ / shares | $ 0.382813
Series F Preferred Stock |
Class of Stock [Line Items] |
Preferred stock, dividend rate (as a percent) | 5.65%
Preferred stock, amount outstanding | $ | $ 425,000,000
Book value (net of capital surplus) | $ | $ 412,000,000
Preferred stock, shares authorized (in shares) | shares | 425,000
Preferred stock, shares outstanding (in shares) | shares | 425,000
Preferred stock, par value (in usd per share) | $ / shares | $ 1
Liquidation preference | $ | $ 1,000
Ownership interest per depositary share ratio | 0.025
Preferred stock, liquidation preference per depositary share (in usd per share) | $ / shares | $ 25
Dividends paid per depositary share (in usd per share) | $ / shares | $ 0.353125
Series G Preferred Stock |
Class of Stock [Line Items] |
Preferred stock, dividend rate (as a percent) | 5.625%
Preferred stock, amount outstanding | $ | $ 450,000,000
Book value (net of capital surplus) | $ | $ 435,000,000
Preferred stock, shares authorized (in shares) | shares | 450,000
Preferred stock, shares outstanding (in shares) | shares | 450,000
Preferred stock, par value (in usd per share) | $ / shares | $ 1
Liquidation preference | $ | $ 1,000
Ownership interest per depositary share ratio | 0.025
Preferred stock, liquidation preference per depositary share (in usd per share) | $ / shares | $ 25
Dividends paid per depositary share (in usd per share) | $ / shares | $ 0.351563
Series H Preferred Stock |
Class of Stock [Line Items] |
Preferred stock, dividend rate (as a percent) | 6.20%
Preferred stock, amount outstanding | $ | $ 600,000,000
Book value (net of capital surplus) | $ | $ 590,000,000
Preferred stock, shares authorized (in shares) | shares | 600,000
Preferred stock, shares outstanding (in shares) | shares | 600,000
Preferred stock, par value (in usd per share) | $ / shares | $ 1
Liquidation preference | $ | $ 1,000
Ownership interest per depositary share ratio | 0.025
Preferred stock, liquidation preference per depositary share (in usd per share) | $ / shares | $ 25
Dividends paid per depositary share (in usd per share) | $ / shares | $ 0.387500

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