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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

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- Definition 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. + References 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 + Details
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- Definition Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (27) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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