Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Assets
Accounts receivable, net (including $13.9 and $14.2 of related party)		$ 13.9	$ 14.2
Real estate and acquired in place lease values (net of accumulated depreciation and amortization of $882.2 and $838.1)		882.2	838.1
Unconsolidated investments (including $2,093.7 and $1,794.8 at fair value)		2,093.7	1,794.8
Assets	[1]	8,271.8	7,876.5
Real estate and acquired in place lease values, net of accumulated depreciation and amortization, net		5,188.1	5,059.8
Liabilities
Total liabilities	[1]	$ 6,261.4	$ 6,072.6
Stockholders' Equity Attributable to Parent [Abstract]
Common stock par value (in dollars per share)		$ 0.0001	$ 0.0001
Common stock authorized (in shares)		200,000,000	200,000,000
Common stock issued (in shares)		137,790,768	137,955,479
Common stock outstanding (in shares)		137,790,768	137,955,479
Series A Cumulative Preferred Stock
Stockholders' Equity Attributable to Parent [Abstract]
Cumulative preferred stock, par value (in dollars per shares)		$ 0.0001	$ 0.0001
Cumulative preferred stock, liquidation preference (in dollars per share)		$ 1,000	$ 1,000
Cumulative preferred stock, shares authorized (in shares)		1,000,000	1,000,000
Cumulative preferred stock, shares outstanding (in shares)		300,000	300,000
Series B Cumulative Preferred Stock
Stockholders' Equity Attributable to Parent [Abstract]
Cumulative preferred stock, par value (in dollars per shares)		$ 0.0001
Cumulative preferred stock, liquidation preference (in dollars per share)		$ 1,000
Cumulative preferred stock, shares authorized (in shares)		1,000,000
Cumulative preferred stock, shares outstanding (in shares)		300,000
Variable Interest Entity, Primary Beneficiary
Assets
Assets		$ 169.8	$ 189.6
Cash held by consolidated investments		6.1	11.5
Real estate and acquired in place lease values, net of accumulated depreciation and amortization, net		137.8	152.8
Liabilities
Total liabilities		82.4	129.2
Variable Interest Entity, Primary Beneficiary | Investment Debt
Liabilities
Debt		$ 51.2	$ 103.3

[1] The assets and liabilities as of December 31, 2022 include $169.8 million (including cash held by consolidated investments of $6.1 million and real estate and acquired in place lease values, net of accumulated depreciation and amortization of $137.8 million) and $82.4 million (including investment debt of $51.2 million), respectively, from consolidated variable interest entities ("VIEs"). The assets and liabilities as of December 31, 2021 include $189.6 million (including cash held by consolidated investments of $11.5 million and real estate and acquired in place lease values, net of accumulated depreciation and amortization of $152.8 million) and $129.2 million (including investment debt of $103.3 million), respectively, from VIEs. These assets can only be used to settle obligations of the consolidated VIEs, and the liabilities do not have recourse to the Company.