MAALP Condensed Consolidated Balance Sheets - Limited Partner [Member] - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets:
Land	$ 943,179	$ 926,532
Buildings and improvements	7,096,432	6,939,288
Furniture, fixtures and equipment	245,607	228,157
Development and capital improvements in progress	53,509	44,355
Real Estate Investment Property, at Cost	8,338,727	8,138,332
Less accumulated depreciation	(1,628,891)	(1,482,368)
Real Estate Investment Property, Net	6,709,836	6,655,964
Undeveloped land	40,514	51,779
Corporate properties, net	9,390	8,812
Investments in real estate joint ventures	50	1,811
Real estate assets, net	6,759,790	6,718,366
Cash and cash equivalents	26,279	37,559
Restricted cash	25,131	26,082
Deferred financing costs, net	4,587	5,232
Other assets	51,987	58,935
Goodwill	1,607	1,607
Total assets	6,869,381	6,847,781
Liabilities:
Unsecured notes payable	2,246,227	2,141,332
Secured notes payable	1,243,198	1,286,236
Accounts payable	7,464	5,922
Fair market value of interest rate swaps	11,760	10,358
Accrued expenses and other liabilities	218,658	226,237
Security deposits	12,386	11,623
Due to general partner	19	19
Total liabilities	3,739,712	3,681,727
Redeemable units	10,369	8,250
Capital [Abstract]
General Partners' Capital Account	2,960,045	2,993,696
Limited Partners' Capital Account	163,575	165,726
Accumulated other comprehensive loss	(4,320)	(1,618)
Total Capital	3,119,300	3,157,804
Total Liabilities and Capital	$ 6,869,381	$ 6,847,781
Redeemable units, units issued and outstanding	98,142	90,844