Quarterly report pursuant to Section 13 or 15(d)

Capital (Details)

v3.20.2
Capital (Details)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Mar. 16, 2020
USD ($)
$ / shares
Mar. 15, 2019
USD ($)
$ / shares
Sep. 30, 2020
$ / shares
Sep. 30, 2019
$ / shares
Sep. 30, 2020
$ / shares
shares
Sep. 30, 2019
$ / shares
shares
Class of Stock [Line Items]            
Payments of dividends | $ $ 124.1 $ 46.5        
Dividend paid per sub-share (in dollars per share)     $ 0 $ 0 $ 16.00 $ 6.00
Sub Shares            
Class of Stock [Line Items]            
Ratio of certificates to sub-shares         0.0003333  
Number of shares repurchased and retired (in shares) | shares         0 6,258
Cash Dividend | Sub Shares            
Class of Stock [Line Items]            
Dividend paid per sub-share (in dollars per share) $ 10.00 $ 1.75        
Special Dividend | Sub Shares            
Class of Stock [Line Items]            
Dividend paid per sub-share (in dollars per share) $ 6.00 $ 4.25