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Single-Family Properties - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) property	Jun. 30, 2017 USD ($) property	Jun. 30, 2018 USD ($) property	Jun. 30, 2017 USD ($) property	Dec. 31, 2017 USD ($)
Property Subject to or Available for Operating Lease
Proceeds from the sale of real estate properties			$ 30,142,000	$ 54,232,000
Proceeds from sale of land			500,000
Gain (loss) on land sold			100,000
Single Family Homes
Property Subject to or Available for Operating Lease
Real estate investment properties unrecorded deed	$ 4,800,000		4,800,000		$ 44,200,000
Depreciation expense	$ 74,100,000	$ 69,000,000	$ 149,500,000	$ 137,800,000
Number of real estate properties sold | property	113	127	216	631
Proceeds from the sale of real estate properties	$ 18,200,000	$ 15,700,000	$ 29,600,000	$ 39,800,000
Net gain (loss) on sale of single-family properties and other	$ 3,200,000	2,200,000	$ 5,400,000	1,200,000
Note receivable		7,000,000		7,000,000
Discount of note receivable		$ 1,500,000		$ 1,500,000

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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-Name Accounting Standards Codification
-Topic 360
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-Section 50
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The cash inflow from the sale of land held for investment; excludes sales of land held as inventory or productive use.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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Disclosure of the unamortized amount of the discount on the note or receivable which is deducted from the face amount of the receivable or loan. The discount or premium is the difference between the present value and the face amount.

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