Consolidated Statements of Cash Flows (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Net earnings (loss)	$ (70,790,000)	$ (21,020,000)	$ 36,271,000
Depreciation and amortization	273,054,000	230,466,000	212,254,000
Amortization of mortgage procurement costs	8,375,000	8,518,000	10,966,000
Impairment of real estate	421,361,000	277,095,000	30,660,000
Impairment of unconsolidated entities	0	3,124,000	390,000
Write-offs of abandoned development projects	30,214,000	283,000	26,850,000
(Gain) loss on extinguishment of debt	(4,549,000)	1,179,000	(7,096,000)
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	0	(6,480,000)
Net loss on disposition of partial interest in development project	0	20,298,000	0
Net gain on disposition of full or partial interest in rental properties	(496,092,000)	(30,281,000)	0
Net gain on change in control of interests	(2,762,000)	(230,660,000)	(8,351,000)
Deferred income tax expense (benefit)	11,704,000	(22,127,000)	46,523,000
Earnings from unconsolidated entities	(107,825,000)	(90,032,000)	(85,798,000)
Net (gain) loss on land held for divestiture activity of unconsolidated entities	(1,338,000)	0	40,777,000
Stock-based compensation expense	10,371,000	13,729,000	9,355,000
Amortization and mark-to-market adjustments of derivative instruments	7,951,000	3,889,000	(7,249,000)
Cash distributions from operations of unconsolidated entities	64,346,000	82,725,000	80,027,000
Non-cash operating expenses and deferred taxes included in discontinued operations	72,922,000	8,528,000	14,207,000
Gain on disposition of rental properties included in discontinued operations	(41,831,000)	(28,100,000)	(100,900,000)
Decrease in land inventory	8,966,000	14,170,000	11,401,000
Decrease in land held for divestiture	199,000	0	55,650,000
Decrease (increase) in notes and accounts receivable	(12,684,000)	11,928,000	(2,228,000)
(Increase) decrease in other assets	38,612,000	(285,000)	4,888,000
Increase (decrease) in accounts payable, accrued expenses and other liabilities	(48,047,000)	8,595,000	55,328,000
Net cash provided by operating activities	162,805,000	262,022,000	417,445,000
Cash Flows from Investing Activities
Capital expenditures	(461,628,000)	(419,869,000)	(803,865,000)
Payment of lease procurement costs	(8,308,000)	(13,251,000)	(11,992,000)
Decrease (increase) in notes receivable	(42,158,000)	39,435,000	(37,583,000)
Decrease in restricted cash used for investing purposes	58,555,000	82,276,000	117,690,000
Proceeds from disposition of full or partial interests in rental properties or development project	625,027,000	279,012,000	113,842,000
Contributions to investments in and advances to unconsolidated entities	(41,093,000)	(147,698,000)	(56,977,000)
Distributions from investments in and advances to unconsolidated entities	97,602,000	136,338,000	167,607,000
Net cash (used in) provided by investing activities	227,997,000	(43,757,000)	(511,278,000)
Cash Flows from Financing Activities
Proceeds from nonrecourse mortgage debt and notes payable	629,714,000	602,939,000	907,608,000
Principal payments on nonrecourse mortgage debt and notes payable	(889,566,000)	(796,898,000)	(593,810,000)
Borrowings on revolving credit facility	899,794,000	965,925,000	458,700,000
Payments on revolving credit facility	(899,794,000)	(965,925,000)	(458,700,000)
Proceeds from issuance of Convertible Senior Notes due 2020, net of issuance costs	291,250,000	0	0
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
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	0
Payment of deferred financing costs	(10,239,000)	(20,803,000)	(25,217,000)
Change in restricted cash used for financing purposes	0	0	(8,208,000)
Purchase of treasury stock	(3,167,000)	(4,009,000)	(1,963,000)
Inducements related to conversion of preferred stock for Class A common stock	0	0	(19,069,000)
Transaction costs related to conversion of preferred stock for Class A common stock	0	0	(3,301,000)
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	789,000	8,368,000
Dividends paid to preferred shareholders	(185,000)	0	(13,060,000)
Acquisitions of noncontrolling interests	(98,687,000)	(94,168,000)	(27,335,000)
Contribution from redeemable noncontrolling interest	0	0	11,348,000
Contributions from noncontrolling interests	80,339,000	154,831,000	1,886,000
Distributions to noncontrolling interests	(36,400,000)	(14,634,000)	(27,680,000)
Net cash (used in) provided by financing activities	(443,816,000)	(171,953,000)	209,567,000
Net increase (decrease) in cash and equivalents	(53,014,000)	46,312,000	115,734,000
Cash and equivalents at beginning of period	333,220,000	280,206,000	217,486,000
Cash and equivalents at end of period	$ 280,206,000	$ 326,518,000	$ 333,220,000