Summary of Significant Accounting Policies - Narrative (Details)	2 Months Ended	5 Months Ended	8 Months Ended	9 Months Ended
	Aug. 31, 2019 USD ($)	May 30, 2018 USD ($)	Aug. 31, 2019 USD ($)	Sep. 30, 2019 USD ($) segment renewal_option	Dec. 31, 2018 USD ($)	May 31, 2018 USD ($)
Accounting Policies [Line Items]
Net assets					$ 2,305,649,000
Net liabilities					2,240,109,000
Number of operating segments | segment				2
Number of renewal options | renewal_option				1
Uncollectible receivables					6,600,000
Accounts receivable, gross					8,200,000
Reserve for losses					500,000
Accrued rental revenue receivables					28,200,000
Goodwill					7,012,000
Percentage of taxable income to be distributed				100.00%
Federal income tax		$ 0		$ 0
Bad debt expense	$ 900,000		$ 900,000
Master Trust 2014
Accounting Policies [Line Items]
Goodwill						$ 7,000,000.0
Other Properties
Accounting Policies [Line Items]
Goodwill						$ 6,500,000
Minimum
Accounting Policies [Line Items]
Renewal term				5 years
Maximum
Accounting Policies [Line Items]
Renewal term				10 years
Special Purpose Entity
Accounting Policies [Line Items]
Net assets				$ 0	2,180,000,000
Net liabilities				$ 0	$ 2,180,000,000