MAALP Condensed Consolidated Balance Sheets (Limited Partner [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
Limited Partner [Member]
Assets:
Land	$ 877,368,000	$ 871,316,000
Buildings and improvements	6,602,860,000	6,366,701,000
Furniture, fixtures and equipment	206,877,000	199,573,000
Capital improvements in progress	84,502,000	166,048,000
Real Estate Investment Property, at Cost	7,771,607,000	7,603,638,000
Real Estate Investment Property, Accumulated Depreciation	(1,258,554,000)	(1,124,207,000)
Real Estate Investment Property, Net	6,513,053,000	6,479,431,000
Land Available for Development	59,195,000	63,850,000
Commercial properties, net	8,285,000	7,523,000
Investments in real estate joint ventures	3,295,000	5,499,000
Real estate assets, net	6,583,828,000	6,556,303,000
Cash and cash equivalents	26,318,000	89,333,000
Restricted cash	64,683,000	44,361,000
Deferred financing costs, net	18,262,000	17,424,000
Other assets	51,789,000	91,637,000
Goodwill	4,106,000	4,106,000
Real Estate Held-for-sale	34,135,000	38,761,000
Total assets	6,783,121,000	6,841,925,000
Liabilities:
Secured notes payable	1,563,014,000	1,790,935,000
Unsecured notes payable	1,912,399,000	1,681,783,000
Accounts payable	15,297,000	15,067,000
Fair market value of interest rate swaps	17,997,000	20,015,000
Accrued expenses and other liabilities	201,997,000	206,190,000
Security Deposit Liability	9,808,000	9,270,000
Due to Related Parties, Current	19,000	19,000
Liabilities associated with assets held for sale	0	78,000
Total liabilities	3,720,531,000	3,723,357,000
Redeemable stock	5,407,000	5,050,000
Capital [Abstract]
General Partners' Capital Account	2,896,253,000	2,946,598,000
Limited Partners' Capital Account	162,346,000	166,746,000
Accumulated Other Comprehensive (Loss) Income , Net of Tax	(1,416,000)	174,000
Total Capital	3,057,183,000	3,113,518,000
Total Liabilities and Capital	$ 6,783,121,000	$ 6,841,925,000
Temporary Equity, Shares Outstanding	82,511	83,139