Earnings Per OP Unit of MAALP - Schedule of Diluted Earnings per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share Disclosure [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									$ 366,618	$ 231,022	$ 340,536
Net income attributable to noncontrolling interests									(12,807)	(8,123)	(12,157)
Income from continuing operations allocated to unvested restricted shares									(519)	(291)	(535)
Dividends, Preferred Stock, Cash									(3,688)	(3,688)	(3,688)
Income from continuing operations available for common shareholders, adjusted									$ 349,604	$ 218,920	$ 324,156
Earnings per share - basic									$ 3.07	$ 1.93	$ 2.86
Net income available for MAALP common unitholders, adjusted									$ 350,123	$ 219,211	$ 324,691
Effect of dilutive securities									259,000	198,000	280,000
Weighted average common shares - diluted									114,113,000	113,836,000	113,687,000
Earnings per share - diluted									$ 3.07	$ 1.93	$ 2.86
Limited Partner [Member]
Earnings Per Share Disclosure [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 155,060	$ 81,459	$ 64,141	$ 65,958	$ 63,517	$ 54,704	$ 61,981	$ 50,820	$ 366,618	$ 231,022	$ 340,536
Net income attributable to noncontrolling interests									(136)
Income from continuing operations allocated to unvested restricted shares									(519)	(291)	(535)
Dividends, Preferred Stock, Cash									(3,688)	(3,688)	(3,688)
Income from continuing operations available for common shareholders, adjusted									$ 362,275	$ 227,043	$ 336,313
Weighted average common units - basic									117,944	117,777	117,617
Earnings per share - basic	$ 1.30	$ 0.68	$ 0.53	$ 0.55	$ 0.53	$ 0.46	$ 0.52	$ 0.42	$ 3.07	$ 1.93	$ 2.86
Net income available for MAALP common unitholders, adjusted									$ 362,794	$ 227,334	$ 336,848
Effect of dilutive securities									259	198	280
Weighted average common shares - diluted									118,203	117,975	117,897
Earnings per share - diluted	$ 1.30	$ 0.68	$ 0.53	$ 0.55	$ 0.53	$ 0.46	$ 0.52	$ 0.42	$ 3.07	$ 1.93	$ 2.86