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Capitalized costs incurred during the period for development properties including capitalized interest, capitalized salaries, and capitalized real estate taxes.

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Property Held for Development

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Percentage Of Ownership Interests

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Percentage Of Reimbursable Revenue From Leasing Of Apartment Homes.

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Percentage of our total property revenues and total non-property income from leasing of apartment homes, excluding income on deferred compensation plans.

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Percentage of Rental Revenue and Other Income From Non-leasing Activities

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Unearned Income

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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The number of general partner units outstanding.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

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The number of real estate properties owned as of the balance sheet date.

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No definition available.

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The number of states the entity operates in as of the balance sheet date.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Indicates line item in statement of financial position that includes operating lease liability.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of income related to nonoperating activities, classified as other.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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The book value of investments in real estate joint ventures including direct and indirect investments.

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Organization and Summary of Significant Accounting Policies (Textual) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) Property Community State shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($)	Dec. 31, 2023 Property	Dec. 31, 2022 Property	Dec. 31, 2021 Property
Real Estate Properties [Line Items]
General Partners' Capital Account, Units Outstanding \| shares	114,373,727	114,246,393
Number of Real Estate Properties \| Community	299
Development and capital improvements in progress	$ 283,477	$ 116,424
Number of States in which Entity Operates \| State	16
Other non-operating expense (income)	$ 4,857	22,999	$ 9,503
Consolidated assets	11,194,791	11,230,450
Consolidated liabilities	5,090,986	4,926,860
Advertising expenses	23,900	20,800	20,200
Lease Intangibles, Gross	$ 14,277,902	13,864,159
Percentage Of Rental Revenue From Leasing Of Apartment Homes	93.00%
Percentage Of Reimbursable Revenue From Leasing Of Apartment Homes	6.00%
Percentage of Rental Revenue and Other Income From Non-leasing Activities	1.00%
Operating Lease, Right-of-Use Asset	$ 49,400	53,800
Operating Lease, Liability	$ 31,740
Operating Lease, Weighted Average Remaining Lease Term	32 years
Operating Lease, Weighted Average Discount Rate, Percent	4.40%
Accounting Standards Update 2016-02 [Member]
Real Estate Properties [Line Items]
Operating Lease, Liability	$ 31,700	$ 33,100
Operating Lease, Liability, Statement of Financial Position [Extensible List]	maa:AccruedExpensesAndOtherLiabilitiesMember	maa:AccruedExpensesAndOtherLiabilitiesMember
Accrued Liabilities [Member]
Real Estate Properties [Line Items]
Dividends Payable	$ 121,400	$ 118,300
Accrued Real Estate Taxes	140,600	131,900
Unearned Income	48,800	42,000
Loss Contingency, Loss in Period	5,300	8,600
Security Deposit Liability	21,600	19,400
Interest Payable	24,800	21,400
Leases, Acquired-in-Place
Real Estate Properties [Line Items]
Lease Intangibles, Gross	1,300	2,600
Parent Company
Real Estate Properties [Line Items]
Capitalized Development Costs, Period	12,700	6,500	4,200
Real Estate [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	19,200
Real Estate [Member] \| Other Assets [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	23,000	13,100
Real Estate [Member] \| Post Massachusetts Avenue [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	43,300	43,700
Real Estate [Member] \| Variable Interest Entity Primary Beneficiary [Member]
Real Estate Properties [Line Items]
Consolidated assets	128,900	46,000
Consolidated liabilities	$ 8,100	3,200
General And Administrative Expense [Member]
Real Estate Properties [Line Items]
Other non-operating expense (income)		$ 2,300
Other non-operating income			4,100
Minimum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	80.00%
Minimum [Member] \| Land Improvements And Buildings
Real Estate Properties [Line Items]
Equipment, Useful Life	5 years
Minimum [Member] \| Furniture, Fixtures And Equipment
Real Estate Properties [Line Items]
Equipment, Useful Life	3 years
Maximum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	100.00%
Maximum [Member] \| Accounting Standards Update 2016-02 [Member]
Real Estate Properties [Line Items]
Operating lease, term of contract	1 year
Maximum [Member] \| Land Improvements And Buildings
Real Estate Properties [Line Items]
Equipment, Useful Life	40 years
Maximum [Member] \| Furniture, Fixtures And Equipment
Real Estate Properties [Line Items]
Equipment, Useful Life	5 years
Limited Partner [Member]
Real Estate Properties [Line Items]
General Partners' Capital Account, Units Outstanding \| shares	114,373,727	114,246,393
Number of Real Estate Properties \| Property	1
Development and capital improvements in progress	$ 283,477	$ 116,424
Other non-operating expense (income)	4,857	22,999	$ 9,503
Consolidated assets	11,194,791	11,230,450
Consolidated liabilities	5,091,005	4,926,879
Lease Intangibles, Gross	$ 14,277,902	$ 13,864,159
Limited Partner [Member] \| Minimum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	80.00%
Limited Partner [Member] \| Maximum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	100.00%
Development Properties [Member]
Real Estate Properties [Line Items]
Number of Real Estate Properties \| Community	8
Number of units under development community \| Property	2,607
Development Properties [Member] \| Expected Costs
Real Estate Properties [Line Items]
Development and capital improvements in progress	$ 595,000
Development Properties [Member] \| Costs Incurred To Date
Real Estate Properties [Line Items]
Development and capital improvements in progress	$ 335,600
Development Properties [Member] \| Scenario Forecast [Member]
Real Estate Properties [Line Items]
Number of Real Estate Properties \| Property				1	2	5
Retail
Real Estate Properties [Line Items]
Number of Real Estate Properties \| Property	32
M A A L P
Real Estate Properties [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	96.60%	96.60%