The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph 14
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph (16)(c)
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph (12)(c)
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph 15
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

Name:	us-gaap_RedeemableNoncontrollingInterestEquityFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Fair Value Measurements (Q2) (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 1991	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Abstract]
Preferred stock dividend rate per annum			12.00%
Public Preferred Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Abstract]
Preferred stock dividend rate per annum	12.00%	12.00%		6.00%
Public preferred stock par value (in dollar per share)	$ 0.01	$ 0.01
Carrying (Reported) Amount, Fair Value Disclosure [Member] \| Public Preferred Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Abstract]
Public preferred stock	$ 141.1	$ 139.2
Estimate of Fair Value, Fair Value Disclosure [Member] \| Public Preferred Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Abstract]
Public preferred stock	$ 68.5	$ 60.5			$ 41.4