Equity, Capital and Other Interests - Other - Additional Information (Details)	83 Months Ended	156 Months Ended
	Dec. 31, 2020 shares	Dec. 31, 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