CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Accounting Standards Update [Extensible List]					us-gaap:AccountingStandardsUpdate201613Member
Class A Common Stock
Dividends paid to Class A common stockholders (in dollars per share)	$ 0.18125	$ 0.18125	$ 0.3625	$ 0.3625