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Financial Instruments and Derivatives - Additional Information (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Derivative [Line Items] |  |  |
Preferred Stock, Redemption Price Per Share | [1] | $ 50.00 |
Preferred Stock, Redemption Date |  | Oct. 01, 2026 |
Variable Rate Commercial Paper Program [Member] |  |  |
Derivative [Line Items] |  |  |
Variable Rate Commercial Paper Program |  | $ 125,000,000.0 |
Variable Rate Commercial Paper Program |  | $ 125,000,000.0 |
Designated as Hedging Instrument |  |  |
Derivative [Line Items] |  |  |
Derivative Instrument, Loss Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Interest Expense |
Realized losses associated with terminated interest rate swaps that were designated as cash flow hedging instruments |  | $ 10,500,000 |
Designated as Hedging Instrument | Interest Expense |  |  |
Derivative [Line Items] |  |  |
Change in fair value of interest rate derivatives included in AOCI and expected to be reclassified in the next 12 months |  | 1,100,000 |
Fair Value, Measurements, Recurring [Member] |  |  |
Derivative [Line Items] |  |  |
Embedded Derivative, Fair Value of Embedded Derivative Asset |  | 24,100,000 | $ 34,500,000
Fixed Rate Debt [Member] |  |  |
Derivative [Line Items] |  |  |
Notes Payable Excluding Interest Rate Swaps and Cap Agreements |  | 4,400,000,000 | 4,500,000,000
Notes Payable, Fair Value Disclosure |  | $ 3,900,000,000 | 4,800,000,000
Floating Rate Debt [Member] |  |  |
Derivative [Line Items] |  |  |
Notes Payable Excluding Interest Rate Swaps and Cap Agreements |  |  | $ 0
[1] | The redemption price is the price at which the preferred stock is redeemable, at MAA’s option, for cash.

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