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Equity, Capital and Other Interests - Other - Additional Information (Details)
77 Months Ended 150 Months Ended
Jun. 30, 2020
shares
Jun. 30, 2020
shares
Equity Capital And Other Interests [Abstract]    
Additional common shares authorized 13,000,000.0 13,000,000.0
Stock repurchase program, number of shares authorized to be repurchased 13,000,000.0 13,000,000.0
Stock open market repurchased and retired during period, shares 0 0
Stock repurchase program, remaining number of shares authorized to be repurchased 13,000,000.0 13,000,000.0