Revenue (Notes)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Revenues

The following table is a summary of the contracted amounts owed to the Company by tenants pursuant to tenant contracts in effect as of December 31, 2019. As of December 31, 2019, the weighted-average remaining term of tenant contracts is approximately five years, exclusive of renewals exercisable at the tenant's option.

	Years Ending December 31,
	2020		2021		2022		2023		2024		Thereafter		Total
Contracted amounts(a)	$	4,177	$	3,986	$	3,758	$	3,141	$	2,405	$	6,908	$	24,375

(a) Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

See notes 3 and 15 for further discussion regarding the Company's lessor arrangements and note 16 for further information regarding the Company's operating segments.