Equity, Capital and Other Interests - Other - Additional Information (Details)	6 Months Ended
	Jun. 30, 2019 shares
Equity Capital And Other Interests [Abstract]
Additional common shares authorized	13,000,000.0
Stock repurchase program, number of shares authorized to be repurchased	13,000,000.0
Stock open market repurchased and retired during period, shares	0
Stock repurchase program, remaining number of shares authorized to be repurchased	13,000,000.0