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Debt - Narrative (Details)		1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 29, 2016	Feb. 28, 2018 USD ($)	Jun. 30, 2018 USD ($) property	Jun. 30, 2017 USD ($) property	Jun. 30, 2018 USD ($) property	Jun. 30, 2017 USD ($) property	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Payments on asset-backed securitizations					$ 10,490,000	$ 466,793,000
Loss on early extinguishment of debt			$ (1,447,000)	$ (6,555,000)	(1,447,000)	$ (6,555,000)
Deferred financing costs, net			39,332,000		$ 39,332,000		$ 38,026,000
Asset Backed Securitizations May 2014 Securitization
Debt Instrument [Line Items]
Payments on asset-backed securitizations				$ 455,400,000
Asset Backed Securitizations May 2014 Securitization | Property disqualified from collateral pool | Single Family Homes
Debt Instrument [Line Items]
Number of properties released | property				3,799		3,799
Increase (decrease) in cash collateral for borrowed securities				$ (9,400,000)
Secured Debt | Asset Backed Securitizations May 2014 Securitization | Special Purpose Entity
Debt Instrument [Line Items]
Loss on early extinguishment of debt				$ (6,555,000)
Secured Note Payable | Secured Debt
Debt Instrument [Line Items]
Payments on asset-backed securitizations			48,400,000
Loss on early extinguishment of debt			$ 500,000
Number of properties released | property			572		572
Increase (decrease) in cash collateral for borrowed securities			$ (2,100,000)
Term loan facility, net
Debt Instrument [Line Items]
Payments on credit facility					$ 100,000,000	$ 100,000,000
Term loan facility, net | Line of Credit
Debt Instrument [Line Items]
Payments on credit facility			100,000,000
Write off of unamortized deferred financing costs			900,000
Deferred financing costs, net			$ 900,000		$ 900,000		$ 2,000,000
Effective interest rate			3.44%		3.44%
4.25% Senior Notes Due 2028 | Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount		$ 500,000,000
Interest Rate		4.25%	4.25%		4.25%
Net proceeds from debt issuance		$ 494,000,000
Underwriting fees		3,200,000
Unamortized discount		2,800,000
Deferred financing costs, net		$ 1,900,000
Effective interest rate			4.08%		4.08%
3.25% Exchangeable Senior Notes | Convertible Debt
Debt Instrument [Line Items]
Interest Rate			3.25%		3.25%
Convertible debt conversion ratio					0.0555443
3.25% Exchangeable Senior Notes | Convertible Debt | American Residential Properties Inc.
Debt Instrument [Line Items]
Convertible debt conversion ratio	0.0469423
Convertible debt conversion ratio adjustment	0.0532795
Equity interest issued, number of shares, multiplier			1.135		1.135

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