Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Assets
Land		$ 1,977,813	$ 1,929,181
Buildings and improvements and other		12,454,439	12,065,244
Development and capital improvements in progress		247,970	283,477
Real Estate Investment Property, at Cost		14,680,222	14,277,902
Less: Accumulated depreciation		(3,848,161)	(3,415,105)
Real Estate Investment Property, Net		10,832,061	10,862,797
Undeveloped land		24,015	60,993
Investment in real estate joint venture		42,827	43,325
Real estate assets, net		10,898,903	10,967,115
Cash and cash equivalents		54,302	25,198
Restricted cash		76,296	10,417
Other assets		255,681	192,061
Total assets		11,285,182	11,194,791
Liabilities:
Unsecured notes payable		4,151,375	4,077,373
Secured notes payable		365,315	485,339
Accrued expenses and other liabilities		584,400	528,274
Total liabilities		5,101,090	5,090,986
Redeemable common stock		30,185	15,397
Shareholders’ equity:
Preferred Stock, Value, Outstanding		9	9
Common stock	[1]	1,151	1,141
Additional paid-in capital		7,230,956	7,176,793
Accumulated distributions in excess of net income		(1,255,807)	(1,294,182)
Accumulated other comprehensive loss		(11,132)	(12,128)
Total MAA shareholders’ equity		5,965,177	5,871,633
Noncontrolling interests - Operating Partnership units		165,116	206,927
Total Company’s shareholders’ equity		6,130,293	6,078,560
Noncontrolling interests - consolidated real estate entities		23,614	9,848
Total equity		6,153,907	6,088,408
Operating Partnership capital:
Accumulated other comprehensive loss		(11,132)	(12,128)
Total operating partners' capital		6,130,293	6,078,560
Noncontrolling interests - consolidated real estate entities		23,614	9,848
Total equity		6,153,907	6,088,408
Total liabilities and equity		11,285,182	11,194,791
Limited Partner [Member]
Assets
Land		1,977,813	1,929,181
Buildings and improvements and other		12,454,439	12,065,244
Development and capital improvements in progress		247,970	283,477
Real Estate Investment Property, at Cost		14,680,222	14,277,902
Less: Accumulated depreciation		(3,848,161)	(3,415,105)
Real Estate Investment Property, Net		10,832,061	10,862,797
Undeveloped land		24,015	60,993
Investment in real estate joint venture		42,827	43,325
Real estate assets, net		10,898,903	10,967,115
Cash and cash equivalents		54,302	25,198
Restricted cash		76,296	10,417
Other assets		255,681	192,061
Total assets		11,285,182	11,194,791
Liabilities:
Unsecured notes payable		4,151,375	4,077,373
Secured notes payable		365,315	485,339
Accrued expenses and other liabilities		584,400	528,274
Due to general partner		19	19
Total liabilities		5,101,109	5,091,005
Redeemable common stock		30,185	15,397
Shareholders’ equity:
Accumulated other comprehensive loss		(11,382)	(12,496)
Total Company’s shareholders’ equity		6,130,274	6,078,541
Noncontrolling interests - consolidated real estate entities		23,614	9,848
Total equity		6,153,888	6,088,389
Operating Partnership capital:
Preferred Units, Preferred Partners' Capital Accounts		66,840	66,840
General Partners' Capital Account	[2]	5,909,700	5,817,270
Limited Partners' Capital Account	[2]	165,116	206,927
Accumulated other comprehensive loss		(11,382)	(12,496)
Total operating partners' capital		6,130,274	6,078,541
Noncontrolling interests - consolidated real estate entities		23,614	9,848
Total equity		6,153,888	6,088,389
Total liabilities and equity		$ 11,285,182	$ 11,194,791

[1] Number of shares issued and outstanding represents total shares of common stock regardless of classification on the Consolidated Balance Sheets. The number of shares classified as redeemable common stock on the Consolidated Balance Sheets as of December 31, 2021 and December 31, 2020 are 131,559 and 121,534, respectively.

[2] Number of units outstanding represents total OP Units regardless of classification on the Consolidated Balance Sheets. The number of units classified as redeemable common units on the Consolidated Balance Sheets as of December 31, 2021 and December 31, 2020 are 131,559 and 121,534, respectively.