Financial Instruments and Derivatives - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Preferred Stock, Redemption Price Per Share	[1]	$ 50.00
Preferred Stock, Redemption Date		Oct. 01, 2026
Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Realized losses associated with terminated interest rate swaps that were designated as cash flow hedging instruments		$ 11,100
Change in fair value of interest rate derivatives included in AOCI and expected to be reclassified in the next 12 months		1,100
Fair Value, Measurements, Recurring [Member]
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset		$ 46,400	$ 34,500
Conventional Variable Rate Debt [Member] | Maximum [Member]
Derivative [Line Items]
Debt Renewal Period		30 days
Fixed Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements		$ 4,500,000	4,500,000
Notes Payable, Fair Value Disclosure		4,400,000	4,800,000
Floating Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements		20,000	$ 0
Notes Payable, Fair Value Disclosure		$ 20,000

[1] The redemption price is the price at which the preferred stock is redeemable, at MAA’s option, for cash.