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MAA Equity (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Dividends, Preferred Stock, Cash       $ 0  
Accumulated Distributions in Excess of Net Income [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance       (634,141,000)  
Net income attributable to MAA       88,557,000  
Redeemable stock fair market value       (1,518,000)  
Dividends on common stock       (123,852,000)  
Ending Balance   $ (670,954,000)   (670,954,000)  
Common Stock [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance       753,000  
Issuance and registration of common shares       1,000  
Shares repurchased and retired       0  
Shares issued in exchange for units       0  
Ending Balance   754,000   754,000  
Additional Paid-in Capital [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance       3,627,074,000  
Issuance and registration of common shares       185,000  
Shares repurchased and retired       (1,742,000)  
Shares issued in exchange for units       158,000  
Shares issued in exchange for redeemable stock       123,000  
Adjustment for noncontrolling interest ownership in operating partnership       (87,000)  
Amortization of unearned compensation       4,383,000  
Ending Balance   3,630,094,000   3,630,094,000  
Noncontrolling Interest [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance       165,726,000  
Net Income Attributable to Noncontrolling Interest       4,881,000  
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)       (141,000)  
Shares issued in exchange for units       (158,000)  
Adjustment for noncontrolling interest ownership in operating partnership       87,000  
Dividends on common stock       0  
Dividends on noncontrolling interest units       (6,820,000)  
Ending Balance   163,575,000   163,575,000  
Accumulated Other Comprehensive Income (Loss) [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance       (1,589,000)  
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)       (2,561,000)  
Ending Balance   (4,150,000)   (4,150,000)  
Parent Company [Member]          
Equity [Line Items]          
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest $ 50,155,000 47,630,000 $ 93,571,000 93,438,000  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 6,529,936,000   6,529,936,000   $ 6,639,795,000
Noncontrolling Interest in Joint Ventures 2,306,000   2,306,000   2,306,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Proceeds from Issuance of Common Stock     783,000 628,000  
Dividends, Preferred Stock, Cash     (1,844,000)    
Parent Company [Member] | Accumulated Distributions in Excess of Net Income [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance     (707,479,000)    
Net income attributable to MAA     90,220,000    
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)     0    
Issuance and registration of common shares     0    
Shares repurchased and retired     0    
Stock Issued During Period, Value, Stock Options Exercised     0    
Shares issued in exchange for units     0    
Redeemable stock fair market value     (719,000)    
Adjustment for noncontrolling interest ownership in operating partnership     0    
Amortization of unearned compensation     (114,000)    
Dividends, Preferred Stock, Cash     (1,844,000)    
Dividends on common stock     (197,680,000)    
Dividends on noncontrolling interest units     0    
Ending Balance (817,616,000)   (817,616,000)    
Parent Company [Member] | Preferred Stock [Member]          
Equity [Line Items]          
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 9,000   9,000   $ 9,000
Parent Company [Member] | Common Stock [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance     1,133,000    
Issuance and registration of common shares     1,000    
Shares repurchased and retired     0    
Stock Issued During Period, Value, Stock Options Exercised     0    
Shares issued in exchange for units     0    
Ending Balance 1,134,000   1,134,000    
Parent Company [Member] | Additional Paid-in Capital [Member]          
Equity [Line Items]          
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest     0    
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance     7,109,012,000    
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)     0    
Issuance and registration of common shares     2,007,000    
Proceeds from Issuance of Common Stock     15,000    
Shares repurchased and retired     (4,782,000)    
Stock Issued During Period, Value, Stock Options Exercised     218,000    
Shares issued in exchange for units     265,000    
Shares issued in exchange for redeemable stock     1,482,000    
Redeemable stock fair market value     0    
Adjustment for noncontrolling interest ownership in operating partnership     123,000    
Amortization of unearned compensation     5,739,000    
Dividends on common stock     0    
Dividends on noncontrolling interest units     0    
Ending Balance 7,114,079,000   7,114,079,000    
Parent Company [Member] | Noncontrolling Interest [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance     235,976,000    
Net Income Attributable to Noncontrolling Interest     3,351,000    
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)     (16,000)    
Issuance and registration of common shares     0 0  
Shares repurchased and retired     0    
Stock Issued During Period, Value, Stock Options Exercised     0    
Shares issued in exchange for units     (265,000)    
Redeemable stock fair market value     0    
Adjustment for noncontrolling interest ownership in operating partnership     (123,000)    
Amortization of unearned compensation     0    
Dividends on common stock     0    
Dividends on noncontrolling interest units     (7,328,000)    
Ending Balance 231,595,000   231,595,000    
Parent Company [Member] | Accumulated Other Comprehensive Income (Loss) [Member]          
Equity [Line Items]          
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest     0    
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance     1,144,000    
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)     (409,000)    
Issuance and registration of common shares     0    
Shares repurchased and retired     0    
Stock Issued During Period, Value, Stock Options Exercised     0    
Shares issued in exchange for units     0    
Redeemable stock fair market value     0    
Adjustment for noncontrolling interest ownership in operating partnership     0    
Amortization of unearned compensation     0    
Dividends on common stock     0    
Dividends on noncontrolling interest units     0    
Ending Balance 735,000   735,000    
Stockholders' Equity, Total [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance       3,157,823,000  
Net Income Including Portion Attributable to Noncontrolling Interest       93,438,000  
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)       (2,702,000)  
Issuance and registration of common shares       186,000  
Shares repurchased and retired       (1,742,000)  
Shares issued in exchange for units       0  
Shares issued in exchange for redeemable stock       123,000  
Redeemable stock fair market value       (1,518,000)  
Adjustment for noncontrolling interest ownership in operating partnership       0  
Amortization of unearned compensation       4,383,000  
Dividends on common stock       (123,852,000)  
Dividends on noncontrolling interest units       (6,820,000)  
Ending Balance   $ 3,119,319,000   $ 3,119,319,000  
Stockholders' Equity, Total [Member] | Parent Company [Member]          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning Balance     6,642,101,000    
Net Income Including Portion Attributable to Noncontrolling Interest     93,571,000    
Other comprehensive (loss) income - derivatives insturments (cash flow hedges)     (425,000)    
Issuance and registration of common shares     16,000    
Shares repurchased and retired     (4,782,000)    
Stock Issued During Period, Value, Stock Options Exercised     218,000    
Shares issued in exchange for units     0    
Shares issued in exchange for redeemable stock     1,482,000    
Redeemable stock fair market value     (719,000)    
Adjustment for noncontrolling interest ownership in operating partnership     0    
Amortization of unearned compensation     5,625,000    
Dividends on common stock     (197,680,000)    
Dividends on noncontrolling interest units     (7,328,000)    
Ending Balance $ 6,532,242,000   $ 6,532,242,000