Consolidated Statements of Cash Flows (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Jan. 31, 2013	Jan. 31, 2012
Net earnings (loss)	$ (70,790,000)	$ 36,271,000	$ (568,000)
Depreciation and amortization – Real Estate Groups	279,189,000	218,695,000	198,290,000
Amortization of mortgage procurement costs	8,561,000	11,182,000	10,997,000
Impairment of real estate	475,555,000	30,660,000	235,000
Impairment of unconsolidated entities	0	390,000	40,284,000
Write-off of abandoned development projects	30,214,000	26,850,000	8,838,000
Gain on extinguishment of debt	(4,549,000)	(7,096,000)	(9,590,000)
Other income - net gain on sale of a fiber optics network	(6,734,000)	0	0
Net (gain) loss on land held for divestiture activity	7,382,000	(6,480,000)	115,654,000
Net gain on disposition of partial interests in rental properties	(496,092,000)	0	(17,665,000)
Net gain on change in control of interests	(2,762,000)	(6,766,000)	0
Deferred income tax expense (benefit)	(9,008,000)	46,559,000	(50,746,000)
Equity in earnings	(107,825,000)	(85,798,000)	(21,147,000)
Net (gain) loss on land held for divestiture activity of unconsolidated entities	(1,338,000)	40,777,000	41,902,000
Stock-based compensation expense	10,371,000	9,355,000	7,650,000
Amortization and mark-to-market adjustments of derivative instruments	7,661,000	(7,738,000)	2,279,000
Non-cash interest expense related to Senior Notes	290,000	489,000	1,737,000
Cash distributions from operations of unconsolidated entities	64,346,000	80,027,000	59,399,000
Non-cash operating expenses included in discontinued operations	33,119,000	5,929,000	42,157,000
Gain on disposition included in discontinued operations	(41,831,000)	(100,900,000)	(133,554,000)
Decrease (increase) in land inventory	8,966,000	11,401,000	(1,040,000)
Decrease in land held for divestiture	199,000	55,650,000	0
(Increase) decrease in notes and accounts receivable	(12,684,000)	(2,228,000)	3,575,000
Decrease (increase) in other assets	38,612,000	4,888,000	(11,433,000)
(Decrease) increase in accounts payable, accrued expenses and other liabilities	(48,047,000)	55,328,000	15,863,000
Net cash provided by operating activities	162,805,000	417,445,000	303,117,000
Cash Flows from Investing Activities
Capital expenditures	(461,628,000)	(803,865,000)	(760,381,000)
Payment of lease procurement costs	(8,308,000)	(11,992,000)	(22,907,000)
Increase in notes receivable	(42,158,000)	(37,583,000)	(14,489,000)
Decrease in restricted cash and escrowed funds used for investing purposes	58,555,000	117,690,000	94,596,000
Proceeds from disposition of full or partial interests in rental properties and other investment	625,027,000	113,842,000	353,243,000
Decrease in investments in and advances to unconsolidated entities	97,602,000	167,607,000	37,249,000
Increase in investments in and advances to unconsolidated entities	(41,093,000)	(56,977,000)	(123,069,000)
Net cash provided by (used in) investing activities	227,997,000	(511,278,000)	(435,758,000)
Cash Flows from Financing Activities
Proceeds from nonrecourse mortgage debt and notes payable	629,714,000	907,608,000	695,449,000
Principal payments on nonrecourse mortgage debt and notes payable	(889,566,000)	(593,810,000)	(572,584,000)
Borrowings on bank revolving credit facility	899,794,000	458,700,000	464,575,000
Payments on bank revolving credit facility	(899,794,000)	(458,700,000)	(601,727,000)
Proceeds from issuance of Convertible Senior Notes due 2020, net of $8,750 of issuance costs	291,250,000	0	0
Proceeds from issuance of Convertible Senior Notes due 2018, net of $10,625 of issuance costs	0	0	339,375,000
Redemption of Puttable Equity-Linked Senior Notes due 2014	(1,058,000)	0	0
Redemption of Senior Notes due 2015	(53,253,000)	0	0
Redemption of Senior Notes due 2017	(132,144,000)	0	0
Redemption of Senior Notes due 2034	(218,951,000)	0	0
Payment of Puttable Equity-Linked Senior Notes due 2011	0	0	(39,407,000)
Make-whole premium and inducements related to exchange of Senior Notes due 2014 for Class A common stock	(5,490,000)	0	0
Transaction costs related to exchange of Senior Notes for Class A common stock	(2,300,000)	0	(3,200,000)
Deferred financing costs	(10,239,000)	(25,217,000)	(14,923,000)
Change in restricted cash and escrowed funds and book overdrafts	0	(8,208,000)	(10,371,000)
Purchase of treasury stock	(3,167,000)	(1,963,000)	(1,670,000)
Inducements related to conversion of preferred stock for Class A common stock	0	(19,069,000)	0
Transaction costs related to conversion of preferred stock for Class A common stock	0	(3,301,000)	0
Redemption of Series A preferred stock	(5,063,000)	0	0
Proceeds from equity call hedge related to the issuance of Series A preferred stock	10,231,000	0	0
Exercise of stock options	1,153,000	8,368,000	195,000
Dividends paid to preferred shareholders	(185,000)	(13,060,000)	(15,400,000)
Acquisitions of noncontrolling interests	(98,687,000)	(27,335,000)	0
Contribution from redeemable noncontrolling interest	0	11,348,000	0
Contributions from noncontrolling interests	80,339,000	1,886,000	6,087,000
Distributions to noncontrolling interests	(36,400,000)	(27,680,000)	(89,644,000)
Net cash (used in) provided by financing activities	(443,816,000)	209,567,000	156,755,000
Net (decrease) increase in cash and equivalents	(53,014,000)	115,734,000	24,114,000
Cash and equivalents at beginning of period	333,220,000	217,486,000	193,372,000
Cash and equivalents at end of period	280,206,000	333,220,000	217,486,000
Operating Activities
(Increase) decrease in land inventory	(59,270,000)	(4,201,000)	7,628,000
Decrease (increase) in land held for divestiture	1,717,000	(2,944,000)	0
Decrease in notes and accounts receivable	10,989,000	7,937,000	16,785,000
Decrease in other assets	104,444,000	2,465,000	155,458,000
(Decrease) increase in accounts payable, accrued expenses and other liabilities	(47,233,000)	(34,991,000)	14,188,000
Total effect on operating activities	10,647,000	(31,734,000)	194,059,000
Investing Activities
Decrease in projects under construction and development	87,857,000	33,662,000	420,663,000
Decrease in completed rental properties	842,261,000	170,033,000	1,230,710,000
Decrease in restricted cash and escrowed funds	4,326,000	14,463,000	149,586,000
(Increase) decrease in investments in and advances to unconsolidated entities	(32,078,000)	21,826,000	(298,492,000)
Total effect on investing activities	902,366,000	239,984,000	1,502,467,000
Financing Activities
Decrease in nonrecourse mortgage debt and notes payable	(903,085,000)	(215,008,000)	(1,648,245,000)
Decrease in senior and subordinated debt	(218,675,000)	(6,049,000)	(40,000,000)
Decrease in restricted cash and escrowed funds	0	(8,208,000)	0
Decrease in preferred stock	(5,489,000)	(209,448,000)	0
Increase in Class A common stock	4,680,000	4,617,000	959,000
Increase in additional paid-in capital	241,268,000	200,448,000	36,904,000
Increase in treasury stock	(12,868,000)	0	0
(Decrease) increase in redeemable noncontrolling interest	(50,546,000)	8,424,000	6,887,000
Increase (decrease) in noncontrolling interest	31,702,000	558,000	(53,031,000)
Total effect on financing activities	$ (913,013,000)	$ (208,250,000)	$ (1,696,526,000)