v3.26.1
Shareholders' Equity - Schedule of Preferred Stock (Details)
 12 Months Ended
Dec. 31, 2025
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 dollars per share) | $ / shares $ 1
Liquidation preference | $ $ 25,000
Ownership interest per depositary share ratio 0.04
Preferred stock, liquidation preference (in dollars per share) | $ / shares $ 1,000
Dividend payable per share (in dollars per share) | $ / shares $ 50.00
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 dollars per share) | $ / shares $ 1
Liquidation preference | $ $ 1,000
Ownership interest per depositary share ratio 25,000.000
Preferred stock, liquidation preference (in dollars per share) | $ / shares $ 25
Dividend payable per share (in dollars per share) | $ / shares $ 1.531252
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 dollars per share) | $ / shares $ 1
Liquidation preference | $ $ 1,000
Ownership interest per depositary share ratio 25,000.000
Preferred stock, liquidation preference (in dollars per share) | $ / shares $ 25
Dividend payable per share (in dollars per share) | $ / shares $ 1.412500
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 dollars per share) | $ / shares $ 1
Liquidation preference | $ $ 1,000
Ownership interest per depositary share ratio 25,000.000
Preferred stock, liquidation preference (in dollars per share) | $ / shares $ 25
Dividend payable per share (in dollars per share) | $ / shares $ 1.406252
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 dollars per share) | $ / shares $ 1
Liquidation preference | $ $ 1,000
Ownership interest per depositary share ratio 25,000.000
Preferred stock, liquidation preference (in dollars per share) | $ / shares $ 25
Dividend payable per share (in dollars per share) | $ / shares $ 1.550000