XML 123 R105.htm IDEA: XBRL DOCUMENT v3.22.0.1
Shareholders' Equity Shareholders' Equity (Narrative) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Depository Shares, Issued   400,000  
Preferred Stock, Dividend Rate, Percentage   5.625%  
Preferred Stock, Liquidation Preference, Value   $ 100,000  
Preferred Stock, Liquidation Preference Per Share   $ 1,000  
Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants   $ 400,000,000  
Issuance of preferred stock $ 0 $ 394,000,000 $ 0
Stock Option      
Common stock shares reserved for future issuance 4,400,000    
Restricted Stock      
Shares of restricted stock outstanding 41,000 176,000  
Common Stock      
Shares repurchased under equity repurchase program (9,500,000) (3,400,000) (18,700,000)
Equity Repurchase Program | Common Stock      
Shares repurchased under equity repurchase program 9,500,000 3,200,000 18,600,000
Average cost per share of shares repurchased under equity repurchase program $ 75.82 $ 58.55 $ 73.60
Stock repurchased during the period $ 720,000,000