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Quarterly Financial Information (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Change in Accounting Estimate [Line Items]
Rents from single-family properties	$ 210,778	$ 207,490	$ 204,648	$ 201,107	$ 198,980	$ 197,137	$ 193,491	$ 167,995	$ 824,023	$ 757,603	$ 559,719
Net income (loss)	30,533	19,097	15,066	11,796	9,338	(167)	(3,753)	5,028	76,492	10,446	(47,948)
Net (loss) income attributable to common shareholders/unitholders	$ (21,994)	$ 1,535	$ (186)	$ (1,490)	$ 2,391	$ (21,152)	$ (10,404)	$ (4,377)	(22,135)	(33,542)	$ (84,577)
Net (loss) income attributable to common shareholders/unitholders per share/unit—basic (in dollars per share)	$ (0.08)	$ 0.01	$ 0.00	$ (0.01)
Net loss attributable to common shareholders per share diluted (in dollars per share)	$ (0.08)	$ 0.00	$ 0.00	$ (0.01)	$ (0.01)	$ (0.09)	$ (0.04)	$ (0.02)
Noncontrolling interest	$ 726,195				$ 744,684				$ 726,195	$ 744,684
Net loss attributable to common unitholders per unit - basic and diluted (in dollars per share)					$ 0.01	$ (0.09)	$ (0.04)	$ (0.02)	$ (0.08)	$ (0.14)	$ (0.40)
American Homes 4 Rent, L.P.
Change in Accounting Estimate [Line Items]
Rents from single-family properties	210,778	$ 207,490	$ 204,648	$ 201,107	$ 198,980	$ 197,137	$ 193,491	$ 167,995	$ 824,023	$ 757,603	$ 559,719
Net income (loss)	30,533	19,097	15,066	11,796	9,338	(167)	(3,753)	5,028	76,492	10,446	(47,948)
Net (loss) income attributable to common shareholders/unitholders	$ (26,612)	$ 1,875	$ (217)	$ (1,829)	$ (4,133)	$ (21,179)	$ (11,020)	$ (3,627)	$ (26,783)	(39,959)	$ (90,279)
Net (loss) income attributable to common shareholders/unitholders per share/unit—basic (in dollars per share)	$ (0.08)	$ 0.01	$ 0.00	$ (0.01)
Net loss attributable to common shareholders per share diluted (in dollars per share)	$ (0.08)	$ 0.00	$ 0.00	$ (0.01)
Net loss attributable to common unitholders per unit - basic and diluted (in dollars per share)					$ (0.01)	$ (0.07)	$ (0.04)	$ (0.01)
Scenario, Adjustment
Change in Accounting Estimate [Line Items]
Noncontrolling interest					$ (5,700)					$ (5,700)

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