v3.20.1

Summary of Significant Accounting Policies - Narrative (Details)		5 Months Ended	8 Months Ended	9 Months Ended	12 Months Ended
	Jun. 02, 2019	May 30, 2018 USD ($)	Aug. 31, 2019 USD ($)	Sep. 30, 2019 segment	Dec. 31, 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	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
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
Spirit Realty, L.P.
Accounting Policies [Line Items]
Asset management agreement termination date	Jun. 02, 2019
Interim asset management agreement initial term					9/20/2019 - 9/20/2020

[Line Items] for Accounting Policies [Table]

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Asset management agreement termination date.

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SMTA Liquidating Trust 10-K