MAALP Capital - Summary of Changes in Total Capital and its Components (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Increase (Decrease) in Partners' Capital [Roll Forward]
Dividends, Preferred Stock, Cash	$ (922)	$ (922)
M A A L P
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	6,088,389	6,289,440
Net Income Available for Common Unitholders	48,864	37,952
Other comprehensive income (loss) - derivatives instruments (cash flow hedges)	279	253
Issuance of units	134	39
Units repurchased and retired	(1,730)	(1,727)
Exercise of unit options	1,466	71
Redeemable stock fair market value adjustment	(2,158)	3,111
Amortization of unearned compensation	5,993	5,289
Dividends, Preferred Stock, Cash	(922)	(922)
Distributions	(121,434)	(118,361)
Contribution from noncontrolling interest	633	401
Ending Balance	6,019,514	6,215,546
M A A L P | Limited Partner [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	206,927	214,647
Net income	1,671	1,304
General partnership units issued in exchange for limited partnership units	(232)	(450)
Adjustment for limited partners’ capital at redemption value	126	56
Distributions	(4,156)	(4,059)
Ending Balance	204,336	211,498
M A A L P | General Partners' Capital Account [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	5,817,270	6,015,290
Net Income Allocated to General Partners	46,271	35,726
Issuance of units	134	39
Units repurchased and retired	(1,730)	(1,727)
Exercise of unit options	1,466	71
General partnership units issued in exchange for limited partnership units	232	450
Redeemable stock fair market value adjustment	(2,158)	3,111
Adjustment for limited partners’ capital at redemption value	(126)	(56)
Amortization of unearned compensation	5,993	5,289
Distributions	(117,278)	(114,302)
Ending Balance	5,750,074	5,943,891
M A A L P | Accumulated Distributions in Excess of Net Income [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	66,840	66,840
Net income	922	922
Dividends, Preferred Stock, Cash	(922)	(922)
Ending Balance	66,840	66,840
M A A L P | AOCI Attributable to Noncontrolling Interest [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	(12,496)	(13,584)
Other comprehensive income (loss) - derivatives instruments (cash flow hedges)	279	253
Ending Balance	(12,217)	(13,331)
M A A L P | Noncontrolling Interests-Consolidated Real Estate Entities [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	9,848	6,247
Contribution from noncontrolling interest	633	401
Ending Balance	$ 10,481	$ 6,648