Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

EQUITY BASED COMPENSATION - Discount Per Share for Lack of Participation Rights in Expected Dividends (Details) - $ / shares	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended		18 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2018	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2019
Dividends Payable [Line Items]
Annual discount per share (in dollars per share)	$ 0.135	$ 0.125		$ 0.395	$ 0.375
Common Stock
Dividends Payable [Line Items]
Annual discount per share (in dollars per share)			$ 0.68	$ 0.54		$ 0.68	$ 0.64	$ 0.50