Shareholders' Equity / Partners' Capital - Class A Common Shares / Units (Details) $ / shares in Units, $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2024 shares	Mar. 31, 2023 USD ($) shares	Sep. 30, 2022 USD ($) shares	Mar. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($)
Class of Stock [Line Items]
Exchange rate						1
Class A common shares
Class of Stock [Line Items]
Common shares, par value (in dollars per share) | $ / shares	$ 0.01					$ 0.01	$ 0.01
Offering costs						$ 257	$ 400	$ 200
Class A common shares | Public Stock Offering
Class of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares) | shares					23,000,000
Common shares, par value (in dollars per share) | $ / shares					$ 0.01
Class A common shares | Public Stock Offering - Issued Directly By The Company
Class of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares) | shares					10,000,000
Sale of stock, consideration received on transaction					$ 375,800
Offering costs					$ 200
Class A common shares | Public Stock Offering - Forward Sales Agreement
Class of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares) | shares	2,987,024	2,987,024	8,000,000	5,000,000	13,000,000
Sale of stock, consideration received on transaction			$ 298,400	$ 185,600
Offering costs	$ 200
American Homes 4 Rent
Class of Stock [Line Items]
General partner ownership interest						87.80%	87.70%
Class A common units | Operating Partnership
Class of Stock [Line Items]
Operating partnership units (in shares) | shares	421,000,048					421,000,048	416,308,486