Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions		3 Months Ended
Mar. 31, 2020	Mar. 31, 2020
Loss Contingencies [Line Items]
Investment company, committed capital, funded	$ 101
Hains Point
Loss Contingencies [Line Items]
Capital commitment		$ 150

Amount of funds committed to investment company from investors.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 50
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=25866437&loc=d3e10491-115837

Name:	us-gaap_InvestmentCompanyCommittedCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration