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Condensed Consolidating Financial Statements - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total revenues	$ 264,483	$ 237,008	$ 522,487	$ 470,762
Expenses:
General and administrative expense	9,677	8,926	18,908	18,221
Interest expense	31,978	28,392	61,279	60,281
Acquisition fees and costs expensed	1,321	1,412	2,632	2,508
Depreciation and amortization	78,319	72,716	157,622	146,669
Other	1,624	1,359	2,451	2,917
Total expenses	240,378	216,201	480,325	434,775
Gain on sale of single-family properties and other, net	3,240	2,454	5,496	4,480
Loss on early extinguishment of debt	(1,447)	(6,555)	(1,447)	(6,555)
Remeasurement of participating preferred units	0	(1,640)	1,212	(7,050)
Net income	25,898	15,066	47,423	26,862
Noncontrolling interest	(3,150)	(30)	(2,036)	(331)
Preferred distributions	11,984	15,282	26,581	28,869
Net income (loss) attributable to common shareholders/unitholders	(15,151)	(186)	(9,337)	(1,676)
Rents from single-family properties
Revenues:
Total revenues	227,211	204,648	445,234	405,755
Fees from single-family properties
Revenues:
Total revenues	2,754	2,690	5,587	5,294
Tenant charge-backs
Revenues:
Total revenues	32,917	27,382	68,724	55,755
Other
Revenues:
Total revenues	1,601	2,288	2,942	3,958
Property Operating Expenses
Expenses:
Cost of goods and services sold	98,843	85,954	199,830	169,259
Property Management Expenses
Expenses:
Cost of goods and services sold	18,616	17,442	37,603	34,920
American Homes 4 Rent, L.P.
Revenues:
Total revenues	264,483	237,008	522,487	470,762
Expenses:
General and administrative expense	9,677	8,926	18,908	18,221
Interest expense	31,978	28,392	61,279	60,281
Acquisition fees and costs expensed	1,321	1,412	2,632	2,508
Depreciation and amortization	78,319	72,716	157,622	146,669
Other	1,624	1,359	2,451	2,917
Total expenses	240,378	216,201	480,325	434,775
Intercompany income	0	0	0	0
Intercompany expenses	0	0	0	0
Gain on sale of single-family properties and other, net	3,240	2,454	5,496	4,480
Loss on early extinguishment of debt	(1,447)	(6,555)	(1,447)	(6,555)
Remeasurement of participating preferred units	0	(1,640)	1,212	(7,050)
Equity in income of subsidiaries	0	0	0	0
Net income	25,898	15,066	47,423	26,862
Noncontrolling interest	(248)	1	(259)	39
Preferred distributions	11,984	15,282	26,581	28,869
Redemption of participating preferred units	32,215		32,215
Net income (loss) attributable to common shareholders/unitholders	(18,053)	(217)	(11,114)	(2,046)
American Homes 4 Rent, L.P. | Rents from single-family properties
Revenues:
Total revenues	227,211	204,648	445,234	405,755
American Homes 4 Rent, L.P. | Fees from single-family properties
Revenues:
Total revenues	2,754	2,690	5,587	5,294
American Homes 4 Rent, L.P. | Tenant charge-backs
Revenues:
Total revenues	32,917	27,382	68,724	55,755
American Homes 4 Rent, L.P. | Other
Revenues:
Total revenues	1,601	2,288	2,942	3,958
American Homes 4 Rent, L.P. | Property Operating Expenses
Expenses:
Cost of goods and services sold	98,843	85,954	199,830	169,259
American Homes 4 Rent, L.P. | Property Management Expenses
Expenses:
Cost of goods and services sold	18,616	17,442	37,603	34,920
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Homes 4 Rent, L.P. (Parent Company)
Revenues:
Total revenues	400	333	734	719
Expenses:
General and administrative expense	6,014	5,020	11,951	10,014
Interest expense	7,972	3,187	14,229	6,515
Acquisition fees and costs expensed	0	3	0	358
Depreciation and amortization	204	369	501	778
Other	80	81	175	180
Total expenses	14,270	8,660	26,856	17,845
Intercompany income	575	45	1,026	121
Intercompany expenses	(85)	(179)	(142)	(327)
Gain on sale of single-family properties and other, net	0	0	0	3,031
Loss on early extinguishment of debt	(879)	0	(879)	0
Remeasurement of participating preferred units		(1,640)	1,212	(7,050)
Equity in income of subsidiaries	40,405	25,166	72,587	48,174
Net income	26,146	15,065	47,682	26,823
Noncontrolling interest	0	0	0	0
Preferred distributions	11,984	15,282	26,581	28,869
Redemption of participating preferred units	32,215		32,215
Net income (loss) attributable to common shareholders/unitholders	(18,053)	(217)	(11,114)	(2,046)
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Homes 4 Rent, L.P. (Parent Company) | Rents from single-family properties
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Homes 4 Rent, L.P. (Parent Company) | Fees from single-family properties
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Homes 4 Rent, L.P. (Parent Company) | Tenant charge-backs
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Homes 4 Rent, L.P. (Parent Company) | Other
Revenues:
Total revenues	400	333	734	719
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Homes 4 Rent, L.P. (Parent Company) | Property Operating Expenses
Expenses:
Cost of goods and services sold	0	0	0	0
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Homes 4 Rent, L.P. (Parent Company) | Property Management Expenses
Expenses:
Cost of goods and services sold	0	0	0	0
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Residential Properties OP, L.P. (Guarantor Subsidiary)
Revenues:
Total revenues	20	72	45	182
Expenses:
General and administrative expense	1	0	2	2
Interest expense	1,870	1,809	3,705	3,583
Acquisition fees and costs expensed	0	0	0	0
Depreciation and amortization	0	4	0	6
Other	0	50	9	51
Total expenses	1,872	1,922	3,723	3,755
Intercompany income	0	0	0	0
Intercompany expenses	0	0	0	0
Gain on sale of single-family properties and other, net	169	285	604	(1,175)
Loss on early extinguishment of debt	0	0	0	0
Remeasurement of participating preferred units		0	0	0
Equity in income of subsidiaries	11,035	9,251	21,267	18,488
Net income	9,352	7,686	18,193	13,740
Noncontrolling interest	0	0	0	0
Preferred distributions	0	0	0	0
Redemption of participating preferred units	0		0
Net income (loss) attributable to common shareholders/unitholders	9,352	7,686	18,193	13,740
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Residential Properties OP, L.P. (Guarantor Subsidiary) | Rents from single-family properties
Revenues:
Total revenues	18	64	40	166
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Residential Properties OP, L.P. (Guarantor Subsidiary) | Fees from single-family properties
Revenues:
Total revenues	1	1	1	2
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Residential Properties OP, L.P. (Guarantor Subsidiary) | Tenant charge-backs
Revenues:
Total revenues	1	7	4	14
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Residential Properties OP, L.P. (Guarantor Subsidiary) | Other
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Residential Properties OP, L.P. (Guarantor Subsidiary) | Property Operating Expenses
Expenses:
Cost of goods and services sold	1	54	4	102
American Homes 4 Rent, L.P. | Reportable Legal Entities | American Residential Properties OP, L.P. (Guarantor Subsidiary) | Property Management Expenses
Expenses:
Cost of goods and services sold	0	5	3	11
American Homes 4 Rent, L.P. | Reportable Legal Entities | Combined Non-Guarantor Subsidiaries
Revenues:
Total revenues	264,063	236,603	521,708	469,861
Expenses:
General and administrative expense	3,662	3,906	6,955	8,205
Interest expense	22,136	23,396	43,345	50,183
Acquisition fees and costs expensed	1,321	1,409	2,632	2,150
Depreciation and amortization	78,115	72,343	157,121	145,885
Other	1,544	1,228	2,267	2,686
Total expenses	224,236	205,619	449,746	413,175
Intercompany income	85	179	142	327
Intercompany expenses	(575)	(45)	(1,026)	(121)
Gain on sale of single-family properties and other, net	3,071	2,169	4,892	2,624
Loss on early extinguishment of debt	(568)	(6,555)	(568)	(6,555)
Remeasurement of participating preferred units		0	0	0
Equity in income of subsidiaries	0	0	0	0
Net income	41,840	26,732	75,402	52,961
Noncontrolling interest	(248)	1	(259)	39
Preferred distributions	0	0	0	0
Redemption of participating preferred units	0		0
Net income (loss) attributable to common shareholders/unitholders	42,088	26,731	75,661	52,922
American Homes 4 Rent, L.P. | Reportable Legal Entities | Combined Non-Guarantor Subsidiaries | Rents from single-family properties
Revenues:
Total revenues	227,193	204,584	445,194	405,589
American Homes 4 Rent, L.P. | Reportable Legal Entities | Combined Non-Guarantor Subsidiaries | Fees from single-family properties
Revenues:
Total revenues	2,753	2,689	5,586	5,292
American Homes 4 Rent, L.P. | Reportable Legal Entities | Combined Non-Guarantor Subsidiaries | Tenant charge-backs
Revenues:
Total revenues	32,916	27,375	68,720	55,741
American Homes 4 Rent, L.P. | Reportable Legal Entities | Combined Non-Guarantor Subsidiaries | Other
Revenues:
Total revenues	1,201	1,955	2,208	3,239
American Homes 4 Rent, L.P. | Reportable Legal Entities | Combined Non-Guarantor Subsidiaries | Property Operating Expenses
Expenses:
Cost of goods and services sold	98,842	85,900	199,826	169,157
American Homes 4 Rent, L.P. | Reportable Legal Entities | Combined Non-Guarantor Subsidiaries | Property Management Expenses
Expenses:
Cost of goods and services sold	18,616	17,437	37,600	34,909
American Homes 4 Rent, L.P. | Consolidating Adjustments
Revenues:
Total revenues	0	0	0	0
Expenses:
General and administrative expense	0	0	0	0
Interest expense	0	0	0	0
Acquisition fees and costs expensed	0	0	0	0
Depreciation and amortization	0	0	0	0
Other	0	0	0	0
Total expenses	0	0	0	0
Intercompany income	(660)	(224)	(1,168)	(448)
Intercompany expenses	660	224	1,168	448
Gain on sale of single-family properties and other, net	0	0	0	0
Loss on early extinguishment of debt	0	0	0	0
Remeasurement of participating preferred units		0	0	0
Equity in income of subsidiaries	(51,440)	(34,417)	(93,854)	(66,662)
Net income	(51,440)	(34,417)	(93,854)	(66,662)
Noncontrolling interest	0	0	0	0
Preferred distributions	0	0	0	0
Redemption of participating preferred units	0		0
Net income (loss) attributable to common shareholders/unitholders	(51,440)	(34,417)	(93,854)	(66,662)
American Homes 4 Rent, L.P. | Consolidating Adjustments | Rents from single-family properties
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Consolidating Adjustments | Fees from single-family properties
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Consolidating Adjustments | Tenant charge-backs
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Consolidating Adjustments | Other
Revenues:
Total revenues	0	0	0	0
American Homes 4 Rent, L.P. | Consolidating Adjustments | Property Operating Expenses
Expenses:
Cost of goods and services sold	0	0	0	0
American Homes 4 Rent, L.P. | Consolidating Adjustments | Property Management Expenses
Expenses:
Cost of goods and services sold	$ 0	$ 0	$ 0	$ 0

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