Earnings (Loss) Per Share and Weighted-Average Shares Outstanding - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Antidilutive Securities Excluded fom Computation of Earnings Per Share
Anti-dilutive securities excluded from computation of fully diluted earnings per share amount (in shares)	97.5		90.7
Limited Partnership Units
Antidilutive Securities Excluded fom Computation of Earnings Per Share
Anti-dilutive securities excluded from computation of fully diluted earnings per share amount (in shares)	86.9		85.7
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded fom Computation of Earnings Per Share
Anti-dilutive securities excluded from computation of fully diluted earnings per share amount (in shares)	10.6	62.9	5.0	90.9