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Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Dec. 10, 2019
Dec. 11, 2018
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Class of Stock [Line Items]          
Stock dividend rate 5.00% 5.00%      
Stock dividend common stock shares issued 463,193 447,092      
Shares repurchased during the period       5,335 35,600
2020 Share Repurchase Program [Member]          
Class of Stock [Line Items]          
Shares repurchased during the period     0 5,335  
Shares repurchased average price per share       $ 16.37  
Maximum [Member] | 2020 Share Repurchase Program [Member]          
Class of Stock [Line Items]          
Share repurchase program approved amount       $ 5