Related Party Transactions	12 Months Ended
Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions As of December 31, 2018 and 2017, affiliates owned approximately 14.0% and 12.1%, respectively, of the Company’s outstanding Class A common shares. On a fully-diluted basis, affiliates held (including consideration of 635,075 Class B common shares and 53,985,492 and 54,018,819 Class A units as of December 31, 2018 and 2017, respectively) an approximate 27.3% and 26.1% interest at December 31, 2018 and 2017, respectively. Concurrently with the Company's public offering of Class A common shares in the first quarter of 2017, the Chairman of the Company's Board of Trustees, B. Wayne Hughes, purchased $50.0 million of the Company's Class A common shares in a private placement at the public offering price. The Operating Partnership issued an equivalent number of corresponding Class A units to AH4R in exchange for the net proceeds from the issuance. American Homes 4 Rent As of December 31, 2018, the Company had a $5.0 million payable related to accrued common distributions to affiliates and an unconsolidated joint venture, compared to a $4.7 million payable related to accrued common and preferred distributions to affiliates as of December 31, 2017, which were included in amounts payable to affiliates in the Company's consolidated balance sheets. American Homes 4 Rent, L.P. As of December 31, 2018, the Operating Partnership had a receivable from affiliates of $25.7 million related to the asset-backed securitization certificates held by AH4R, which was included in amounts due from affiliates in the Operating Partnership's consolidated balance sheets, and had a $5.0 million payable related to accrued common distributions to affiliates and an unconsolidated joint venture, which was included in amounts payable to affiliates in the Operating Partnership's consolidated balance sheets. As of December 31, 2017, the Operating Partnership had a receivable from affiliates of $25.7 million related to the asset-backed securitization certificates held by AH4R, which was included in amounts due from affiliates in the Operating Partnership's consolidated balance sheets, and had a $4.7 million payable related to accrued common and preferred distributions to affiliates, which was included in amounts payable to affiliates in the Operating Partnership's consolidated balance sheets.

Related Party Transactions

As of December 31, 2018 and 2017, affiliates owned approximately 14.0% and 12.1%, respectively, of the Company’s outstanding Class A common shares. On a fully-diluted basis, affiliates held (including consideration of 635,075 Class B common shares and 53,985,492 and 54,018,819 Class A units as of December 31, 2018 and 2017, respectively) an approximate 27.3% and 26.1% interest at December 31, 2018 and 2017, respectively.

Concurrently with the Company's public offering of Class A common shares in the first quarter of 2017, the Chairman of the Company's Board of Trustees, B. Wayne Hughes, purchased $50.0 million of the Company's Class A common shares in a private placement at the public offering price. The Operating Partnership issued an equivalent number of corresponding Class A units to AH4R in exchange for the net proceeds from the issuance.

American Homes 4 Rent

As of December 31, 2018, the Company had a $5.0 million payable related to accrued common distributions to affiliates and an unconsolidated joint venture, compared to a $4.7 million payable related to accrued common and preferred distributions to affiliates as of December 31, 2017, which were included in amounts payable to affiliates in the Company's consolidated balance sheets.

American Homes 4 Rent, L.P.

As of December 31, 2018, the Operating Partnership had a receivable from affiliates of $25.7 million related to the asset-backed securitization certificates held by AH4R, which was included in amounts due from affiliates in the Operating Partnership's consolidated balance sheets, and had a $5.0 million payable related to accrued common distributions to affiliates and an unconsolidated joint venture, which was included in amounts payable to affiliates in the Operating Partnership's consolidated balance sheets. As of December 31, 2017, the Operating Partnership had a receivable from affiliates of $25.7 million related to the asset-backed securitization certificates held by AH4R, which was included in amounts due from affiliates in the Operating Partnership's consolidated balance sheets, and had a $4.7 million payable related to accrued common and preferred distributions to affiliates, which was included in amounts payable to affiliates in the Operating Partnership's consolidated balance sheets.