MAALP Condensed Consolidated Balance Sheets - Limited Partner [Member] - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Land	$ 1,825,223	$ 1,816,008
Buildings and improvements	10,636,260	10,523,762
Furniture, fixtures and equipment	307,463	298,204
Development and capital improvements in progress	242,286	231,224
Real Estate Investment Property, at Cost	13,011,232	12,869,198
Less accumulated depreciation	(1,768,527)	(1,656,071)
Real Estate Investment Property, Net	11,242,705	11,213,127
Undeveloped land	71,464	71,464
Corporate properties, net	12,350	12,778
Investments in real estate joint ventures	44,629	44,493
Real estate assets, net	11,371,148	11,341,862
Cash and cash equivalents	33,959	33,536
Restricted cash	24,540	88,264
Deferred financing costs, net	4,679	5,065
Other assets	124,134	134,525
Goodwill	1,239	1,239
Total assets	11,559,699	11,604,491
Liabilities:
Unsecured notes payable	3,260,686	3,180,624
Secured notes payable	1,296,498	1,319,088
Accounts payable	13,346	11,970
Fair market value of interest rate swaps	5,001	7,562
Accrued expenses and other liabilities	368,785	414,244
Security deposits	19,419	18,829
Due to general partner	19	19
Total liabilities	4,963,754	4,952,336
Redeemable units	9,132	10,073
Capital [Abstract]
Preferred Units, Preferred Partners' Capital Accounts	66,840	64,833
General Partners' Capital Account	6,279,765	6,337,721
Limited Partners' Capital Account	233,464	235,976
Accumulated other comprehensive loss	4,438	1,246
Noncontrolling Interest in Joint Ventures	2,306	2,306
Capital	6,584,507	6,639,776
Partners' Capital, Including Portion Attributable to Noncontrolling Interest	6,586,813	6,642,082
Total Liabilities and Capital	$ 11,559,699	$ 11,604,491
Redeemable units, units issued and outstanding	90,217	103,578