Forest City Enterprises (FCEPP) 10-K 24 Feb 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014	Feb. 18, 2015
Entity Registrant Name	FOREST CITY ENTERPRISES INC
Entity Central Index Key	38067
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float		$3,416,468,256
Common Stock Class A
Entity Common Stock, Shares Outstanding			181,750,129
Common Stock Class B
Entity Common Stock, Shares Outstanding			19,197,083

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
Real Estate
Completed rental properties	$7,753,561,000	$7,307,233,000
Projects under construction and development	477,957,000	535,479,000
Land inventory	97,469,000	128,688,000
Total Real Estate	8,328,987,000	7,971,400,000
Less accumulated depreciation	-1,555,965,000	-1,469,328,000
Real Estate, net – (variable interest entities $427.8 million and $656.8 million, respectively)	6,773,022,000	6,502,072,000
Cash and equivalents – (variable interest entities $20.6 million and $18.8 million, respectively)	326,518,000	280,206,000
Restricted cash – (variable interest entities $28.6 million and $154.5 million, respectively)	266,530,000	347,534,000
Notes and accounts receivable, net	419,038,000	455,561,000
Investments in and advances to unconsolidated entities	620,466,000	447,165,000
Other assets – (variable interest entities $19.6 million and $55.5 million, respectively)	409,366,000	415,316,000
Development project held for sale – (variable interest entities $0 and $504.2 million, respectively)	0	504,171,000
Total Assets	8,814,940,000	8,952,025,000
Liabilities
Mortgage debt and notes payable, nonrecourse – (variable interest entities $250.7 million and $323.7 million, respectively)	4,238,201,000	4,351,506,000
Revolving credit facility	0	0
Convertible senior debt	700,000,000	700,000,000
Accounts payable, accrued expenses and other liabilities – (variable interest entities $42.6 million and $89.0 million, respectively)	847,011,000	831,920,000
Cash distributions and losses in excess of investments in unconsolidated entities	211,493,000	256,843,000
Deferred income taxes	482,474,000	485,894,000
Mortgage debt, nonrecourse of development project held for sale – (variable interest entities $0 and $228.0 million, respectively)	0	228,000,000
Total Liabilities	6,479,179,000	6,854,163,000
Redeemable Noncontrolling Interest	183,038,000	171,743,000
Commitments and Contingencies	0	0
Shareholders’ Equity
Preferred stock	0	0
Common stock – $.33 1/3 par value
Common stock, value	66,689,000	66,225,000
Additional paid-in capital	1,165,828,000	1,095,748,000
Retained earnings	563,198,000	570,793,000
Less treasury stock, at cost; 1,095,310 and 941,853 Class A shares, respectively	-18,922,000	-15,978,000
Shareholders’ equity before accumulated other comprehensive loss	1,776,793,000	1,716,788,000
Accumulated other comprehensive loss	-58,846,000	-76,582,000
Total Shareholders’ Equity	1,717,947,000	1,640,206,000
Noncontrolling interest	434,776,000	285,913,000
Total Equity	2,152,723,000	1,926,119,000
Total Liabilities and Equity	8,814,940,000	8,952,025,000
Common Stock Class A
Common stock – $.33 1/3 par value
Common stock, value	60,286,000	59,500,000
Total Equity	60,286,000	59,500,000
Common Stock Class B
Common stock – $.33 1/3 par value
Common stock, value	6,403,000	6,725,000
Total Equity	$6,403,000	$6,725,000

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Real Estate, net	$6,773,022,000	$6,502,072,000
Cash and equivalents	326,518,000	280,206,000
Restricted cash	266,530,000	347,534,000
Other assets	409,366,000	415,316,000
Development project held for sale	0	504,171,000
Mortgage debt and notes payable, nonrecourse	4,238,201,000	4,351,506,000
Accounts payable, accrued expenses and other liabilities	847,011,000	831,920,000
Mortgage debt, nonrecourse of development project held for sale	0	228,000,000
Preferred stock, without par value	$0	$0
Preferred stock, shares authorized	13,600,000	13,600,000
Preferred stock, shares issued	0	0
Variable interest entities
Real Estate, net	427,800,000	656,800,000
Cash and equivalents	20,600,000	18,800,000
Restricted cash	28,600,000	154,500,000
Other assets	19,600,000	55,500,000
Development project held for sale	0	504,200,000
Mortgage debt and notes payable, nonrecourse	250,700,000	323,700,000
Accounts payable, accrued expenses and other liabilities	42,600,000	89,000,000
Mortgage debt, nonrecourse of development project held for sale	$0	$200,000
Common Stock Class A
Common stock, par value per share	$0.33	$0.33
Common stock, shares authorized	371,000,000	371,000,000
Common stock, shares issued	180,859,262	178,498,770
Common stock, shares outstanding	179,763,952	177,556,917
Treasury stock, Class A Shares	1,095,310	941,853
Common Stock Class B
Common stock, par value per share	$0.33	$0.33
Common stock, shares authorized	56,000,000	56,000,000
Common stock, shares issued	19,208,517	20,173,558
Common stock, shares outstanding	19,208,517	20,173,558
Common stock, shares issuable	26,257,961	26,257,961

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Revenues [Abstract]
Rental	$537,703,000	$526,966,000	$588,336,000
Tenant recoveries	134,330,000	118,035,000	154,548,000
Service and management fees	57,156,000	50,522,000	53,277,000
Parking and other	49,067,000	53,765,000	49,901,000
Arena	104,532,000	116,695,000	48,353,000
Land sales	67,057,000	68,102,000	92,434,000
Military Housing	48,427,000	31,967,000	61,218,000
Total revenues	998,272,000	966,052,000	1,048,067,000
Expenses
Property operating and management	394,538,000	384,119,000	407,755,000
Real estate taxes	81,630,000	78,637,000	77,736,000
Ground rent	6,128,000	9,387,000	7,358,000
Arena operating	72,659,000	76,096,000	49,175,000
Cost of land sales	35,638,000	23,457,000	31,383,000
Military Housing operating	30,204,000	11,481,000	35,375,000
Corporate general and administrative	45,021,000	51,116,000	52,450,000
Total operating expenses	665,818,000	634,293,000	661,232,000
Depreciation and amortization	273,054,000	230,466,000	212,254,000
Write-offs of abandoned development projects and demolition costs	40,414,000	1,655,000	26,850,000
Impairment of real estate	421,361,000	277,095,000	30,660,000
Net (gain) loss on land held for divestiture activity	7,382,000	0	-6,480,000
Total expenses	1,408,029,000	1,143,509,000	924,516,000
Operating income (loss)	-409,757,000	-177,457,000	123,551,000
Interest and other income	52,283,000	42,780,000	45,545,000
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
Interest expense	-285,042,000	-234,405,000	-253,324,000
Amortization of mortgage procurement costs	-8,375,000	-8,518,000	-10,966,000
Gain (loss) on extinguishment of debt	4,549,000	-1,179,000	7,096,000
Earnings (loss) before income taxes	-147,488,000	-138,136,000	-79,747,000
Income tax expense (benefit)
Current	562,000	4,931,000	-60,444,000
Deferred	11,704,000	-22,127,000	46,523,000
Total income tax expense (benefit)	12,266,000	-17,196,000	-13,921,000
Earnings (loss) from unconsolidated entities, gross of tax
Equity in earnings	107,825,000	90,032,000	85,798,000
Impairment	0	-3,124,000	-390,000
Net gain (loss) on land held for divestiture activity	1,338,000	0	-40,777,000
Total equity in earnings of unconsolidated entities	109,163,000	86,908,000	44,631,000
Earnings (loss) from continuing operations	-50,591,000	-34,032,000	-21,195,000
Discontinued operations, net of tax:
Operating earnings (loss) from rental properties	2,203,000	-1,844,000	4,564,000
Impairment of real estate	-46,962,000	0	-2,604,000
Gain on disposition of rental properties	24,560,000	14,856,000	55,506,000
Earnings (loss) from discontinued operations	-20,199,000	13,012,000	57,466,000
Net earnings (loss)	-70,790,000	-21,020,000	36,271,000
Noncontrolling interests
(Earnings) loss from continuing operations attributable to noncontrolling interests, gross of tax	71,525,000	13,475,000	1,251,000
Earnings from discontinued operations attributable to noncontrolling interests	-6,042,000	-50,000	-1,097,000
(Earnings) loss attributable to noncontrolling interest	65,483,000	13,425,000	154,000
Net earnings (loss) attributable to Forest City Enterprises, Inc.	-5,307,000	-7,595,000	36,425,000
Preferred dividends and inducements of preferred stock conversions	185,000	0	32,129,000
Net earnings (loss) attributable to common shareholders	($5,492,000)	($7,595,000)	$4,296,000
Basic and diluted earnings (loss) per common share
Earnings (loss) from continuing operations attributable to common shareholders	$0.10	($0.10)	($0.30)
Earnings (loss) from discontinued operations attributable to common shareholders	($0.13)	$0.06	$0.31
Net earnings (loss) attributable to common shareholders	($0.03)	($0.04)	$0.01

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	($70,790,000)	($21,020,000)	$36,271,000
Other comprehensive income (loss), net of tax:
Unrealized net gains on investment securities (net of tax of $0, $(132) and $(41), respectively)	208,000	0	64,000
Foreign currency translation adjustments (net of tax of $(19), $100 and $(631), respectively)	-158,000	32,000	996,000
Unrealized net gains on interest rate derivative contracts (net of tax of $(11,216), $(16,833) and $(10,261), respectively)	26,605,000	17,759,000	16,170,000
Total other comprehensive income, net of tax	26,655,000	17,791,000	17,230,000
Comprehensive income (loss)	-44,135,000	-3,229,000	53,501,000
Comprehensive (income) loss attributable to noncontrolling interest	65,449,000	13,370,000	180,000
Total comprehensive income attributable to Forest City Enterprises, Inc.	$21,314,000	$10,141,000	$53,681,000

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Statement of Comprehensive Income [Abstract]
Tax amount related to unrealized net gains on investment securities	($132,000)	$0	($41,000)
Tax amount related to foreign currency translation adjustments	100,000	-19,000	-631,000
Tax amount related to unrealized net gains (losses) on interest rate derivative contracts	($16,833,000)	($11,216,000)	($10,261,000)

Consolidated_Statements_of_Equ

Consolidated Statements of Equity (USD $)	Total	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss) Income	Noncontrolling Interest	Series A Preferred Stock	Common Stock Class A	Common Stock Class B
Balance at Jan. 31, 2012	$1,751,872,000	$740,988,000	$571,989,000	($1,874,000)	($120,460,000)	$284,806,000	$220,000,000	$49,445,000	$6,978,000
Balance, Shares at Jan. 31, 2012				108,000			4,400,000	148,336,000	20,935,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss), net of amounts attributable to redeemable noncontrolling interest	46,056,000		36,425,000			9,631,000
Other comprehensive income (loss), net of tax	17,230,000				17,257,000	-27,000
Purchase of treasury stock	-1,963,000			-1,963,000
Purchase of treasury stock, Shares	129,568			129,000
Conversion of Class B to Class A shares	0							233,000	-233,000
Conversion of Class B to Class A shares, Shares								700,000	-700,000
Issuance of Class A shares in exchange for Series A preferred stock	-22,370,000	201,530,000	-19,069,000				-209,448,000	4,617,000
Issuance of Class A shares in exchange for Series A preferred stock, shares							-4,189,000	13,852,000
Restricted stock vested	0	-173,000						173,000
Restricted stock vested, Shares								519,000
Exercise of stock options	8,368,000	4,531,000		3,729,000				108,000
Exercise of stock options, shares				-230,000				322,000
Preferred stock dividends	-13,060,000		-13,060,000				-13,060,000
Stock-based compensation	14,751,000	14,751,000
Excess income tax deficiency from stock-based compensation	-961,000	-961,000
Redeemble noncontrolling interest adjustment	-8,424,000	-8,424,000
Acquisition of partner's noncontrolling interest in consolidated subsidiaries	-27,335,000	-20,197,000				-7,138,000
Contributions from noncontrolling interests	1,886,000					1,886,000
Distributions to noncontrolling interests	-27,680,000					-27,680,000
Change to equity method of accounting for subsidiaries	-724,000					-724,000
Other changes in noncontrolling interests	925,000					925,000
Balance at Jan. 31, 2013	1,738,571,000	932,045,000	576,285,000	-108,000	-103,203,000	261,679,000	10,552,000	54,576,000	6,745,000
Balance, Shares at Jan. 31, 2013				7,000			211,000	163,729,000	20,235,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A shares in exchange for Series A preferred stock, shares							109,768	362,990
Balance at Mar. 14, 2013
Balance at Jan. 31, 2013	1,738,571,000	932,045,000	576,285,000	-108,000	-103,203,000	261,679,000	10,552,000	54,576,000	6,745,000
Balance, Shares at Jan. 31, 2013				7,000			211,000	163,729,000	20,235,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss), net of amounts attributable to redeemable noncontrolling interest	-53,943,000		-5,307,000			-48,636,000
Other comprehensive income (loss), net of tax	26,655,000				26,621,000	34,000
Purchase of treasury stock	-3,167,000			-3,167,000
Purchase of treasury stock, Shares	179,907			180,000
Conversion of Class B to Class A shares	0							20,000	-20,000
Conversion of Class B to Class A shares, Shares								62,000	-62,000
Issuance of Class A shares in exchange for Series A preferred stock	0	5,368,000					-5,489,000	121,000
Issuance of Class A shares in exchange for Series A preferred stock, shares							-110,000	363,000
Redemption of Series A preferred stock	-5,063,000						-5,063,000
Redemption of Series A preferred stock, Shares							-101,000
Proceeds from settlement of equity call hedge related to issuance of preferred stock	10,231,000	23,099,000		-12,868,000
Proceeds from settlement of equity call hedge related to issuance of preferred stock, Shares				765,000
Issuance of Class A shares in exchange for Puttable Equity-Linked Senior Notes due 2014	194,345,000	189,786,000						4,559,000
Issuance of Class A shares in exchange for Puttable Equity-Linked Senior Notes due 2014, Shares								13,679,000
Restricted stock vested	0	-202,000						202,000
Restricted stock vested, Shares								600,000
Exercise of stock options	1,153,000	966,000		165,000				22,000
Exercise of stock options, shares				-10,000				66,000
Preferred stock dividends	-185,000		-185,000				-185,000
Stock-based compensation	16,197,000	16,197,000
Excess income tax deficiency from stock-based compensation	-133,000	-133,000
Redeemble noncontrolling interest adjustment	50,546,000	50,546,000
Acquisition of partner's noncontrolling interest in consolidated subsidiaries	-98,687,000	-95,924,000				-2,763,000
Contributions from noncontrolling interests	80,339,000					80,339,000
Distributions to noncontrolling interests	-36,400,000					-36,400,000
Change to equity method of accounting for subsidiaries	5,660,000					5,660,000
Adjustment due to change in ownership of consolidated subsidiaries	0	-26,000,000				26,000,000
Balance at Dec. 31, 2013	1,926,119,000	1,095,748,000	570,793,000	-15,978,000	-76,582,000	285,913,000	0	59,500,000	6,725,000
Balance, Shares at Dec. 31, 2013				942,000			0	178,499,000	20,173,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss), net of amounts attributable to redeemable noncontrolling interest	-3,925,000		-7,595,000			3,670,000
Other comprehensive income (loss), net of tax	17,791,000				17,736,000	55,000
Purchase of treasury stock	-4,009,000			-4,009,000
Purchase of treasury stock, Shares	215,632			215,000
Conversion of Class B to Class A shares	0							322,000	-322,000
Conversion of Class B to Class A shares, Shares								964,000	-964,000
Restricted stock vested	0	-240,000						240,000
Restricted stock vested, Shares								723,000
Exercise of stock options	789,000	-276,000		1,065,000
Exercise of stock options, shares	62,175			-62,000
Preferred stock dividends							0
Stock-based compensation	19,673,000	19,673,000
Excess income tax deficiency from stock-based compensation	-419,000	-419,000
Exchange of Class A Common Units for Class A shares	0	34,134,000				-34,358,000		224,000
Exchange of Class A Common Units for Class A shares, Shares								673,000
Redeemble noncontrolling interest adjustment	-28,390,000	-28,390,000
Acquisition of partner's noncontrolling interest in consolidated subsidiaries	-99,863,000	-32,505,000				-67,358,000
Contributions from noncontrolling interests	175,274,000					175,274,000
Distributions to noncontrolling interests	-14,634,000					-14,634,000
Adjustment due to change in ownership of consolidated subsidiaries	-3,935,000	78,103,000				-82,038,000
Change in control of equity method subsidiary	168,252,000					168,252,000
Balance at Dec. 31, 2014	$2,152,723,000	$1,165,828,000	$563,198,000	($18,922,000)	($58,846,000)	$434,776,000	$0	$60,286,000	$6,403,000
Balance, Shares at Dec. 31, 2014				1,095,000			0	180,859,000	19,209,000

Consolidated_Statements_of_Equ1

Consolidated Statements of Equity (Parenthetical) (Noncontrolling Interest, USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Noncontrolling Interest
Net loss attributable to redeemable noncontrolling interest	$16,847	$17,095	$9,785

Consolidated_Statements_of_Cas

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

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Accounting Policies	Summary of Significant Accounting Policies
	Nature of Business
	Forest City Enterprises, Inc. (the “Company”) principally engages in the ownership, development, management and acquisition of commercial and residential real estate and land throughout the United States. The Company operates through three strategic business units and has five reportable operating segments. The three strategic business units, which represent four reportable operating segments, are the Commercial Group, Residential Group and Land Development Group (collectively, the “Real Estate Groups”). The Commercial Group, the largest strategic business unit, owns, develops, acquires and operates regional malls, specialty/urban retail centers, office and life science buildings and mixed-use projects. Additionally, it operates Barclays Center, a sports and entertainment arena located in Brooklyn, New York, which is reported as a separate operating segment (“Arena”). The Residential Group owns, develops, acquires and operates residential rental properties, including upscale and middle-market apartments, adaptive re-use developments and subsidized senior housing. The Residential Group also owns interests in entities that develop and manage military family housing. The Land Development Group acquires and sells both land and developed lots to residential, commercial and industrial customers at its Stapleton project in Denver, Colorado.
	Corporate Activities is the other reportable operating segment, which includes the Company’s equity method investment in the Brooklyn Nets, a member of the National Basketball Association (“NBA”).
	The Company has approximately $8.8 billion of consolidated assets in 24 states and the District of Columbia at December 31, 2014. The Company’s core markets include Boston, Chicago, Dallas, Denver, Los Angeles, Philadelphia, and the greater metropolitan areas of New York City, San Francisco and Washington D.C. The Company has offices in Albuquerque, Boston, Dallas, Denver, Los Angeles, New York City, San Francisco, Washington, D.C., and the Company’s corporate headquarters in Cleveland, Ohio.
	Change in Year-End
	The Company changed its year-end to December 31 from January 31, effective December 31, 2013 (the “Year-end change”). As a result, the Company presents the 11 month period ended December 31, 2013 as its transition period (the “2013 Transition period”). Due to the Year-end change, many of the differences in comparisons of the Company’s results are impacted by the one-month difference between the 2013 Transition period and the full years presented. The Company believes the Year-end change was useful to its financial statement users to allow for increased comparability of its performance to its peers. The years 2014, 2013 and 2012 refer to the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively.
	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of Forest City Enterprises, Inc., its wholly-owned subsidiaries and entities in which it has a controlling interest in accordance with accounting principles generally accepted in the United States of America (“GAAP”). All intercompany balances and transactions have been eliminated in consolidation.
	The accounting guidance for consolidation of variable interest entities (“VIEs”) requires an ongoing reassessment of determining whether a variable interest gives a company a controlling financial interest in a VIE. VIEs are entities in which the equity investors do not have sufficient equity at risk to finance their endeavors without additional financial support or the holders of the equity investment at risk do not have a controlling financial interest. The Company continuously reassesses whether or not it has the (a) power to direct the activities of the VIE that most significantly affect its economic performance and (b) the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE.
	Use of Estimates
	The preparation of consolidated financial statements in conformity with GAAP requires the Company to make estimates and assumptions in certain circumstances that affect amounts reported in the accompanying consolidated financial statements and related notes. Some of the critical estimates made by the Company include, but are not limited to, determination of the primary beneficiary of VIEs, estimates of useful lives for long-lived assets, reserves for collection on accounts and notes receivable and other investments, the fair value estimate of redeemable noncontrolling interest, impairment of real estate and other-than-temporary impairments on equity method investments. As a result of the nature of estimates, actual results could differ.
	In April 2013, management approved a plan to demolish Ten MetroTech Center, an office building in Brooklyn, New York, to clear the land for redevelopment or sale. Accordingly, the original useful life, estimated to expire in 2042, was adjusted to expire at the demolition date in October 2013, which resulted in $45,500,000 of accelerated depreciation expense recognized in the Consolidated Statements of Operations during the 11 months ended December 31, 2013.
	Reclassifications
	During the year ended December 31, 2014, the Company established several new financial statement line items within the Revenue and Expense sections of the Consolidated Statement of Operations to provide the financial statement user additional details of the components of total revenues and total expenses. Accordingly, comparable amounts for the 11 months ended December 31, 2013 and the year ended January 31, 2013 have been reclassified.
	The Nets operating segment information as of December 31, 2013 and for the 11 months ended December 31, 2013 and the year ended January 31, 2013 has been reclassified and aggregated with the Corporate Activities operating segment disclosures to conform to the current year presentation. Certain other prior year amounts in the accompanying consolidated financial statements have been reclassified to conform to the current year’s presentation.
	New Accounting Guidance
	In July 2013, the Financial Accounting Standards Board (“FASB”) issued an amendment to the accounting guidance on the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or tax credit carryforward exists. This guidance, which clarifies whether the unrecognized tax benefit should be recorded as a liability or reduction of the related deferred tax asset, is effective for fiscal years and interim reporting periods within those years, beginning after December 15, 2013. The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. The adoption of this guidance on January 1, 2014 did not have a material impact on the Company’s consolidated financial statements.
	In April 2014, the FASB issued an amendment to the accounting guidance for reporting discontinued operations and disclosures of disposals of components of an entity. This guidance changes the requirements for reporting discontinued operations and the criteria for determining which disposals can be presented as discontinued operations. This guidance is effective for annual reporting periods beginning on or after December 15, 2014 and interim reporting periods within that annual period. This guidance was early adopted effective April 1, 2014. The adoption of this guidance is expected to substantially reduce the number of property disposals qualifying for discontinued operations as compared to historical results.
	In January 2015, the FASB issued an amendment to the accounting guidance to eliminate the concept of extraordinary items from GAAP. The presentation and disclosure guidance for items that are unusual in nature or occur infrequently has been retained and expanded to include items that are both unusual in nature and infrequently occurring. This guidance is effective for annual reporting periods beginning after December 15, 2015 and interim reporting periods within that annual period. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. This guidance was early adopted effective January 1, 2015 and is not expected to have a material impact on the Company’s consolidated financial statements.
	The following new accounting pronouncements will be adopted on their respective effective dates:
	In May 2014, the FASB issued an amendment to the accounting guidance for revenue from contracts with customers. The core principle of this guidance is an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance defines steps an entity should apply to achieve the core principle. This guidance is effective for annual reporting periods beginning after December 15, 2016 and interim reporting periods within that annual period and allows for both retrospective and modified retrospective methods of adoption. Early adoption is not permitted. The Company is currently in the process of determining the method of adoption and evaluating the impact of adopting this guidance on its consolidated financial statements.
	In August 2014, the FASB issued an amendment to the accounting guidance on disclosure of uncertainties about an entity’s ability to continue as a going concern. This guidance requires management to assess the Company’s ability to continue as a going concern and to provide disclosures under certain circumstances. This guidance is effective for annual reporting periods ending after December 15, 2016 and interim reporting periods thereafter. Early adoption is permitted. The Company does not expect the adoption of this guidance to have a material impact on the Company’s consolidated financial statements.
	Acquisition of Rental Properties
	Upon acquisition of a rental property, the purchase price of the property is allocated to net tangible and identified intangible assets acquired based on fair values. The Company’s most common method of acquisition is acquiring its joint venture partners interest in an individual property or a group of properties. Above-market and below-market in-place lease values for acquired properties are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) the Company’s estimate of the fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining non-cancelable term of the lease. Capitalized above-market lease values are amortized as a reduction of rental revenues (or rental expense for ground leases in which the Company is the lessee) over the remaining non-cancelable terms of the respective leases. Capitalized below-market lease values are amortized as an increase to rental revenues (or rental expense for ground leases in which the Company is the lessee) over the remaining non-cancelable terms of the respective leases, including any fixed-rate renewal periods that are probable of being exercised. For the Company’s below-market lease and in-place lease intangibles remaining at December 31, 2014 and 2013, the Company assumed fixed rate renewals for the in-place leases deemed to be at or near market and includes the assumed renewals in the calculation of intangible asset values and related amortization period.
	Intangible assets also include amounts representing the value of tenant relationships and in-place leases based on the Company’s evaluation of each tenant’s lease and its overall relationship with the respective tenant. The Company estimates the cost to execute leases with terms similar to in-place leases, including leasing commissions, legal expenses and other related expenses. This intangible asset is amortized to expense over the remaining term of the respective lease. The Company’s estimates of value are made using methods similar to those used by independent appraisers or by using independent appraisals. Factors considered by the Company in this analysis include an estimate of the carrying costs during the expected lease-up periods, current market conditions and costs to execute similar leases. In estimating carrying costs, the Company includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, which primarily range from three to twelve months. The Company also considers information obtained about each property as a result of its pre-acquisition due diligence, marketing and leasing activities in estimating the fair value of the tangible and intangible assets acquired. The Company also uses the information obtained as a result of its pre-acquisition due diligence in considering any conditional asset retirement obligations, and when necessary, will record a conditional asset retirement obligation as part of its purchase price.
	When calculating the estimated value to assign to a tenant relationship intangible asset, the Company estimates the likelihood a lessee will execute a lease renewal and other factors relative to the relationship. In determining the likelihood of lease renewal, the Company utilizes a probability weighted model based on many factors. Other qualitative factors related to the relationship the Company considers include, but are not limited to, the nature and extent of the business relationship with the tenant, growth prospects for developing new business with the tenant and the tenant’s credit quality. The value of tenant relationship intangibles is amortized over the remaining initial lease term and expected renewals, but in no event longer than the remaining depreciable life of the building. The value of in-place leases is amortized over the remaining non-cancelable term of the respective leases and any fixed-rate renewal periods deemed probable.
	In the event a tenant terminates its lease, the unamortized portion of each intangible asset, including market rate adjustments, in-place lease values and tenant relationship values, would be charged to expense.
	Cash and Equivalents
	The Company considers all highly liquid instruments purchased with a maturity of three months or less to be cash equivalents. Cash equivalents are stated at cost, which approximates market value.
	The Company maintains operating cash and reserves for replacement balances in financial institutions which, from time to time, may exceed federally insured limits. The Company periodically assesses the financial condition of these institutions and believes the risk of loss is minimal.
	Cash flows associated with items intended as hedges of identifiable transactions or events are classified in the same category as the cash flows from the items being hedged. Cash flows from derivatives not designated as cash flow or fair value hedges are generally classified in the investing section in the Consolidated Statements of Cash Flows.
	Cash flows associated with lease procurement costs are classified as investing activities and consist primarily of lease commissions and related legal fees associated with procuring first generation tenants under long-term lease agreements for office buildings, retail regional malls or specialty retail centers. The Company primarily incurs these costs during the development phase of the project and they are integral to starting construction and ultimately completing the project. Management views these lease procurement costs as part of the initial investment to obtain long-term cash inflow.
	Restricted Cash
	Restricted cash represents amounts with financial institutions for debt service payments, taxes and insurance, collateral, security deposits, capital replacement, improvement and operating reserves, bond funds, development escrows and construction escrows.
	Allowance for Doubtful Accounts and Reserves on Notes Receivable
	The Company records allowances against its receivables from tenants and other receivables it considers uncollectible. These allowances are based on management’s estimate of receivables that will not be realized from cash receipts in subsequent periods. The Company also maintains an allowance for receivables arising from the straight-lining of rents. This receivable arises from earnings recognized in excess of amounts currently due under lease agreements. Management exercises judgment in establishing these allowances and considers payment history and current credit status in developing these estimates. The allowance against the straight-line rent receivable is based on historical experience with early lease terminations as well as specific review of significant tenants and tenants having known financial difficulties. There is a risk the estimate of the expected activity of current tenants may not accurately reflect future events. If the estimate does not accurately reflect future tenant vacancies, the reserve for straight-line rent receivable may be over or understated by the actual tenant vacancies that occur.
	The Company estimates the allowance for notes receivable based on its assessment of expected future cash flows estimated to be received with consideration given to any collateral of the respective note. If the estimate of expected future cash flows does not accurately reflect actual events, the reserve on notes receivable may be over or understated by the actual cash flows that occur.
	Investments in Unconsolidated Entities
	Investments in unconsolidated entities include investments in and advances to unconsolidated entities and cash distributions and losses in excess of investments in unconsolidated entities the Company does not control and/or is not deemed to be the primary beneficiary. The Company accounts for its investments in unconsolidated entities using the equity method of accounting whereby the cost of an investment is adjusted for the Company’s share of income or loss from the date of acquisition, increased for equity contributions made and reduced by distributions received. The income or loss for each unconsolidated entity is allocated in accordance with the provisions of the applicable operating agreements, which may differ from the ownership interest held by each investor. Certain investments in unconsolidated entities’ share of cumulative allocated losses and cash distributions received exceeds its cumulative allocated share of income and equity contributions. As a result, the carrying value of certain investments in unconsolidated entities is negative, based on the Company’s ongoing potential funding requirements. Unconsolidated entities with negative carrying values are included in cash distributions and losses in excess of investments in unconsolidated entities in the Consolidated Balance Sheets. Differences between the Company’s carrying value of its investment in unconsolidated entities and the Company’s underlying equity of such unconsolidated entities are amortized over the respective lives of the underlying assets or liabilities, as applicable. The Company records income or loss in certain unconsolidated entities based on the distribution priorities, which may change upon the achievement of certain return thresholds.
	The Company invests in projects through partnerships and limited liability entities. The Company may provide funding in excess of its legal ownership. These fundings are typically interest-bearing or entitle the Company to a preference on and of such advances on property cash flows and are included in investments in and advances to unconsolidated entities.
	Other Assets
	Included in other assets are costs incurred in connection with obtaining financing, which are deferred and amortized over the life of the related debt. Costs incurred in connection with leasing space to tenants are also included in other assets and are deferred and amortized using the straight-line method over the lives of the related leases.
	Intangible Assets
	Upon an acquisition of a rental property, the Company records intangible assets acquired at their estimated fair value separate and apart from goodwill. The Company amortizes identified intangible assets with finite lives on a straight-line basis over the period the assets are expected to contribute directly or indirectly to the future cash flows of the acquired property. Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate their carrying amount may not be recoverable. An impairment loss is recognized if the carrying amount of an intangible asset is not recoverable and its carrying amount exceeds its estimated fair value.
	In connection with the Company’s military housing projects, intangible assets are recorded based upon the costs associated with acquiring military housing development and management contracts. Intangible assets related to the military housing development contracts are amortized based upon the ratio of development fees earned in relation to overall fee income to be earned throughout the contract period. Intangible assets related to the military housing management contracts are amortized based upon a straight-line basis over the remaining term of the management contracts.
	Variable Interest Entities
	The Company’s VIEs consist of joint ventures engaged in the ownership, development and management of office buildings, regional malls, specialty retail centers, apartment communities, military housing and the Nets. As of December 31, 2014, the Company determined it was the primary beneficiary of 24 VIEs representing 20 properties, which are consolidated. The creditors of the consolidated VIEs do not have recourse to the Company’s general credit. As of December 31, 2014, the Company owns variable interests in 61 VIEs for which it is not the primary beneficiary, which are accounted for as equity method investments. The maximum exposure to loss as a result of the ownership of these unconsolidated VIEs is limited to the Company’s applicable investment balances, which approximates $277,000,000 at December 31, 2014.
	During the year ended December 31, 2014, the Company entered into a joint venture with Greenland Atlantic Yards, LLC, a subsidiary of Shanghai-based Greenland Holding Group Company Limited (“Greenland”), to execute on the remaining development rights of Pacific Park Brooklyn, a 22 acre mixed-use project in Brooklyn, New York. Following the transaction, the Company determined it was no longer the primary beneficiary of the Pacific Park Brooklyn project, which historically was a VIE. The impact of the deconsolidation to the December 31, 2013 Consolidated Balance Sheet and parenthetical disclosures were decreases of $504,171,000 to development project held for sale, $1,141,000 to cash and equivalents, $99,784,000 to restricted cash, $2,571,000 to other assets, $228,000,000 to mortgage debt, nonrecourse of development project held for sale, $20,428,000 to accounts payable, accrued expenses and other liabilities and an increase to investments in and advances to unconsolidated entities of $156,071,000 to the December 31, 2014 Consolidated Balance Sheet. See Note S – Net Loss on Disposition of Partial Interest in Development Project for detailed information on the joint venture.
	During the year ended December 31, 2014, the Company acquired the remaining noncontrolling interest of Arizona State Retirement System (“ASRS”) in the under construction B2 BKLYN, an apartment building in Brooklyn, New York. Following the transaction, the Company determined B2 BKLYN was no longer a VIE. The impact of the removal of the entity from VIE status to the parenthetical disclosures on the December 31, 2013 Consolidated Balance Sheet were decreases of $104,408,000 to real estate, net, $1,306,000 to cash and equivalents, $46,801,000 to restricted cash, $3,110,000 to other assets, $56,605,000 to mortgage debt and notes payable, nonrecourse and $7,656,000 to accounts payable, accrued expenses and other liabilities. See Note Q – Impairment of Real Estate and Impairment of Unconsolidated Entities for additional information
	Derivative Instruments and Hedging Activities
	Derivatives are recorded at fair value. Accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and whether it meets the hedge accounting requirements. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of gain or loss recognition on the instrument with the recognition of the change in the fair value of the hedged asset or liability attributable to the hedged risk (in a fair value hedge) or the earnings effect of the hedged forecasted transactions (in a cash flow hedge). The Company may enter into derivative contracts intended to economically hedge certain interest rate risk, even though the contracts do not qualify for or the Company has elected not to apply hedge accounting.
	Accumulated Other Comprehensive Loss
	The following table summarizes the components of accumulated other comprehensive income (loss) (“accumulated OCI”):
		December 31,			December 31,			January 31,
		2014			2013			2013
		(in thousands)
	Unrealized losses on securities	$	—		$	—		$	340
	Unrealized (gains) losses on foreign currency translation	137			189			(69		)
	Unrealized losses on interest rate contracts (1)	96,084			125,059			168,497
		96,221			125,248			168,768
	Income tax benefit	(37,281		)	(48,517		)	(65,382		)
	Noncontrolling interest	(94		)	(149		)	(183		)
	Accumulated Other Comprehensive Loss	$	58,846		$	76,582		$	103,203
-1	Included in the amounts as of December 31, 2014, December 31, 2013 and January 31, 2013 are $73,536, $97,360 and $126,506, respectively, of unrealized loss on an interest rate swap associated with New York Times office building on its nonrecourse mortgage debt with a notional amount of $640,000. This swap effectively fixes the mortgage at an all-in lender interest rate of 6.40% and expires in September 2017.
The following table summarizes the changes, net of tax and noncontrolling interest, of accumulated OCI by component:
	Securities			Foreign Currency Translation			Interest Rate Contracts			Total
	(in thousands)
Balance, February 1, 2013	$	(208	)	$	42		$	(103,037	)	$	(103,203	)
OCI before reclassifications	430			(158		)	22,707			22,979
(Gain) loss reclassified from accumulated OCI	(222		)	—			3,864			3,642
Total other comprehensive income (loss)	208			(158		)	26,571			26,621
Balance, January 1, 2014	$	—		$	(116	)	$	(76,466	)	$	(76,582	)
OCI before reclassifications	—			32			13,898			13,930
Loss reclassified from accumulated OCI	—			—			3,806			3,806
Total other comprehensive income	—			32			17,704			17,736
Balance, December 31, 2014	$	—		$	(84	)	$	(58,762	)	$	(58,846	)
The following table summarizes (gains) losses reclassified from accumulated OCI and their location on the Consolidated Statements of Operations:
Accumulated OCI Components	(Gain) Loss Reclassified from Accumulated OCI				Location on Consolidated Statements of Operations
	(in thousands)
Year Ended December 31, 2014
Interest rate contracts	2,523				Interest expense
Interest rate contracts	3,666				Discontinued operations
Interest rate contracts	59				Equity in earnings
	6,248				Total before income tax and noncontrolling interest
	(2,412		)		Income tax benefit
	(30		)		Noncontrolling interest
	$	3,806			Loss reclassified from accumulated OCI
11 Months Ended December 31, 2013
Interest rate contracts	6,258				Interest expense
Interest rate contracts	82				Equity in earnings
	6,340				Total before income tax and noncontrolling interest
	(2,460		)		Income tax benefit
	(16		)		Noncontrolling interest
	$	3,864			Loss reclassified from accumulated OCI
Noncontrolling Interest
Interests held by partners in consolidated entities are reflected in noncontrolling interest, which represents the noncontrolling interests’ share of the underlying net assets of the Company’s consolidated subsidiaries. Noncontrolling interest that is not redeemable is reported in the equity section of the Consolidated Balance Sheets.
Noncontrolling interests where the Company may be required to repurchase the noncontrolling interest at fair value under a put option or other contractual redemption requirements are reported in the mezzanine section of the Consolidated Balance Sheets as redeemable noncontrolling interest. The Company adjusts the redeemable noncontrolling interest to redemption value (which approximates fair value) at each balance sheet date with changes recognized as an adjustment to additional paid-in capital. In the event the historical cost of the redeemable noncontrolling interest, which represents initial cost, adjusted for contributions, distributions and the allocation of profits or losses, is in excess of estimated fair value, the Company records the redeemable noncontrolling interest at historical cost.
In connection with the closing of a joint venture with Greenland, the Company became obligated to purchase certain noncontrolling interests of the fully consolidated entity that contributed the development project into the joint venture. See Note S – Net Loss on Disposition of Partial Interest in Development Project for detailed information on the joint venture. In addition, the Company acquired certain other partners’ noncontrolling interest in Shops at Wiregrass, a regional mall in Tampa, Florida, Waterfront Station, a mixed-use development project in Washington, D.C., and B2 BKLYN, during the year ended December 31, 2014. The fair value of consideration exchanged or accrued related to all noncontrolling interest acquisitions in excess of the historical cost was $32,505,000, resulting in a decrease in additional paid-in-capital as reflected in the Consolidated Statements of Equity.
During the year ended December 31, 2014, the Company contributed two operating and three under construction apartment communities into our strategic capital partnership with ASRS. The fair value of consideration exchanged related to these contributions in excess of book value was $78,103,000, resulting in an increase in additional paid-in capital and corresponding decrease to noncontrolling interest as reflected in the Consolidated Statement of Equity.
Recognition of Revenues
Rental – Lease terms in the retail centers and office buildings generally range from 1 to 30 years, excluding leases with certain anchor tenants, which typically are longer. Minimum rents are recognized on a straight-line basis over the non-cancelable term of the related lease, which include the effects of rent steps and rent abatements under the leases. Overage rents are recognized after sales thresholds have been achieved. Residential lease terms are generally one year.
Tenant Recoveries – Reimbursements from commercial tenants for common area maintenance, taxes, insurance and other commercial property operating expenses as provided in the lease agreements are recognized in the period the applicable costs are incurred.
Service and Management Fees – Management, leasing, finance, development and other service fee revenue is recognized in the period in which the services are performed. Revenues and profit on long-term fixed-price contracts are recorded using the percentage-of-completion method. Revenues on reimbursable cost-plus fee contracts are recorded in the amount of the accrued reimbursable costs plus proportionate fees at the time the costs are incurred.
Parking and Other – Revenues derived from monthly and transient tenant parking and other revenue is recognized in the period the services are performed.
Arena – The Arena naming rights agreement commenced with the opening of the Arena, has a 20 year term and is subject to certain extension rights. Arena naming rights revenue is recognized on a straight-line basis over the term of the agreement.
Arena founding partner and sponsor agreements entitle the parties to certain sponsorship, promotional, media, hospitality and other rights and entitlements. These agreements expire at various terms ranging from one to seven years from the Arena opening and revenue is recognized on a straight-line basis over the term of the agreements.
Arena suite licenses entitle the licensee to the use of a luxury suite in the Arena. The terms of the suite license agreements range from one to seven years. Revenue is recognized on a straight-line basis over the term of the agreements.
Ticketing fee revenue is based on the Arena’s share of ticket sale fees in accordance with an agreement with Ticketmaster. Revenue from ticketing fees is deferred and recognized upon settlement of the related event.
Land Sales – Sales of land to residential, commercial and industrial customers, primarily at the Company’s Stapleton project, and sales of commercial and residential outlots adjacent to the Company’s operating property portfolio are recognized at closing or upon completion of all conditions precedent to the sales contract (whichever is later).
Military Housing – Property management and asset management fees are earned based on a contractual percentage of the annual net rental income and annual operating income, respectively, generated by the military housing privatization projects as defined in the agreements. Additional property management incentive fees are recognized based upon successful completion of criteria set forth in the property management agreements.
Development fees are earned based on a contractual percentage of the actual development costs incurred. Additional development incentive fees are recognized based upon successful completion of criteria, such as incentives to realize development cost savings, encourage small and local business participation, comply with specified safety standards and other project management incentives as specified in the development agreements.
Construction management fees are earned based on a contractual percentage of the actual construction costs incurred. Additional construction incentive fees are recognized based upon successful completion of certain criteria as set forth in the construction contracts.
Real Estate Sales and Assets Held for Sale
The specific timing of a sale transaction and recognition of profit is measured against various criteria in the real estate sales accounting guidance covering the terms of the transaction and any continuing involvement in the form of management or financial assistance associated with the property. If the sales criteria are not met, the Company defers gain recognition and accounts for the transaction by applying the deposit, finance, installment or cost recovery methods, as appropriate.
Prior to the adoption of the new accounting guidance on discontinued operations in April 2014, consolidated properties sold or determined to be held for sale were reported as discontinued operations. The determination of when an asset qualifies as held for sale requires significant judgment. Factors the Company considers when evaluating whether an asset qualifies as held for sale include, among other things, whether the potential sale is approved by management, the status of any marketing efforts, interest from prospective buyers, the status of any sale negotiations and the probability of whether the asset will be sold in twelve months. Each potential sale is evaluated based on its separate facts and circumstances.
Recognition of Expenses
Property Operating and Management – Expenses incurred at the operating property level and general business unit expenses, including non-capitalizable development costs and management and service company expenses, are recognized as incurred.
Real Estate Taxes – Real estate taxes on operating properties are recognized over the applicable tax period. Real estate taxes during active development and construction are capitalized as a project cost.
Ground Rent – Expenses related to ground leases are recognized using the straight-line method over the non-cancelable lease term. Participation payments triggered by defined events within the respective lease agreements such as refinancings, sales or other capital transactions are expensed when incurred. Ground rent during active development and construction is capitalized as a project cost.
Arena Operating – Operating expenses related to the Arena are recognized as incurred.
Cost of Land Sales – Cost of land associated with land sales is recognized in the same period as the respective revenue from the sale qualifies for recognition.
Military Housing – Operating expenses related to the Military Housing are recognized as incurred.
Corporate General and Administrative – Expenses related to the Company’s Corporate segment are recognized as incurred.
Stock-Based Compensation
Stock-based compensation cost is measured at the date of grant and is based on the fair value of the equity award. The fair value of stock options is computed using the Black-Scholes option pricing model, which incorporates assumptions for risk-free rate, expected volatility, dividend yield, and expected life of the options. The fair value of restricted stock is equal to the closing price of the stock on the date of grant. The fair value cost of stock options and restricted stock, as adjusted for estimated forfeitures, is recognized over the requisite service period of the grantee using the straight-line attribution method. Cost recognition is accelerated if the grantee is retirement-eligible (as defined in the 1994 Stock Plan, as amended) or becomes retirement-eligible before the end of the nominal vesting period. The cost is recognized immediately if the grantee is retirement-eligible at the date of grant or on a straight-line basis over the period ending with the first anniversary from the date of grant when the individual becomes retirement-eligible. The fair value of performance shares that do not have a market condition is equal to the closing price of the underlying stock on the date of grant. The compensation cost is recognized on a straight-line basis over the requisite service period if it is probable the performance goals will be achieved. The fair value of performance shares that have a market condition is computed using a Monte Carlo simulation. The compensation cost is recognized over the requisite service period if the requisite service is rendered, even if the market condition is never satisfied.
Cash flows resulting from the tax benefits from tax deductions in excess of the compensation cost recognized for those options or shares (excess tax benefits) are classified as financing cash flows in the Consolidated Statements of Cash Flows. The Company records excess tax benefits only if the excess tax deductions reduce taxes payable computed on a with-and-without basis. There were no excess tax benefits classified as financing cash flows for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013.
Depreciation and Amortization
Depreciation and amortization is generally computed on a straight-line method over the estimated useful life of the asset. The estimated useful lives of buildings (other than the Arena) and certain first generation tenant allowances considered by management as a component of the building are 40 to 50 years. The estimated useful life of the Arena is 34.5 years, reflecting the ground leases on which the Arena was built. Subsequent tenant improvements and those first generation tenant allowances not considered a component of the building are amortized over the lesser of the remaining useful life of the asset or the term of the tenant’s lease. This estimated life is based on the length of time the asset is expected to generate positive operating cash flows. Actual events and circumstances can cause the life of the building and tenant improvement to be different than the estimates made. Additionally, lease terminations can affect the economic life of the tenant improvements.
Capitalization
Major improvements and tenant improvements that are the Company’s assets are capitalized and expensed through depreciation charges. Tenant improvements qualifying as lease inducements are capitalized into other assets and amortized as a reduction of rental revenues over the term of the tenant’s lease. Repairs, maintenance and minor improvements are expensed as incurred.
A variety of costs are incurred in the development and leasing of properties. After determination is made to capitalize a cost, it is allocated to the specific component of a project that is benefited. Determination of when a development project is substantially complete and capitalization must cease involves judgment. The Company’s capitalization policy on development properties is based on accounting guidance for the capitalization of interest cost and accounting guidance for costs and the initial rental operations of real estate properties. The costs of land and buildings under development include specifically identifiable costs. The capitalized costs include pre-construction costs essential to the development of the property, development costs, construction costs, interest costs, real estate taxes, salaries and related costs and other costs incurred during the period of development. The Company considers a construction project as substantially complete and held available for occupancy upon the completion of tenant improvements, but no later than one year from cessation of major construction activity. The Company ceases capitalization on any portion substantially completed and occupied or held available for occupancy, and capitalizes only those costs associated with the portion under construction. Costs and accumulated depreciation applicable to assets retired or sold are removed from the respective accounts and any resulting gains or losses are reported in the Consolidated Statements of Operations.
Write-offs of Abandoned Development Projects and Demolition Costs
On a quarterly basis, the Company reviews each project under development to determine whether it is probable the project will be developed. If management determines the project will not be developed, its project costs and other related expenses are written off as an abandoned development project cost. The Company abandons projects under development for a number of reasons, including, but not limited to, changes in local market conditions, increases in construction or financing costs or third party challenges related to entitlements or public financing.
Impairment of Real Estate
The Company reviews its real estate for impairment whenever events or changes indicate its carrying value may not be recoverable. Impairment indicators include, but are not limited to, significant decreases in property net operating income, significant decreases in occupancy rates, the physical condition of the property and general economic conditions. A property’s value is impaired if the aggregate future cash flows (undiscounted and without interest charges) to be generated are less than the carrying value of the property. In addition, the undiscounted cash flows may consider a probability-weighted cash flow estimation approach when alternative courses of action to recover the carrying amount of a long-lived asset are under consideration or a range is estimated at the balance sheet date. Significant estimates are made in the determination of future undiscounted cash flows including future net operating income, estimated hold periods, risk of foreclosure and estimated cash proceeds received upon disposition of the asset. To the extent an impairment has occurred, the loss will be measured as the excess of the carrying amount of the property over the estimated fair value of the property. Determining fair value of real estate involves significant judgments and estimates including timing and amounts of expected cash flows, discount rates, capitalization rates and comparable sales data, which are considered Level 3 inputs. Changes to these estimates could affect whether or not an impairment charge would be required and/or the amount of impairment charges recognized.
Impairment of Unconsolidated Entities
The Company reviews its portfolio of unconsolidated entities for other-than-temporary impairments whenever events or changes indicate its carrying value in the investments may be in excess of fair value. A loss in value of an equity method investment which is other-than-temporary is recognized as an impairment of unconsolidated entities. This determination is based upon the length of time elapsed, severity of decline, possible recovery period and other relevant facts. Determining fair value of a real estate investment and whether or not a loss is other-than-temporary involves significant judgments and estimates. Examples of these estimates include timing and amounts of expected cash flows, discount rates, capitalization rates and comparable sales data, which are considered Level 3 inputs. Changes to these estimates could affect whether or not an impairment charge would be required and/or the amount of impairment charges recognized.
Historic and New Market Tax Credit Entities
The Company has investments in properties that have received, or the Company believes are entitled to receive, historic preservation tax credits on qualifying expenditures under Internal Revenue Code (“IRC”) section 47 and new market tax credits on qualifying investments in designated community development entities (“CDEs”) under IRC section 45D, as well as various state credit programs, including participation in the New York State Brownfield Tax Credit Program, which entitles the members to tax credits based on qualified expenditures at the time those qualified expenditures are placed in service. The Company typically enters into these investments with sophisticated financial investors. In exchange for the financial investors’ initial contribution into the investment, the financial investor is entitled to substantially all of the benefits derived from the tax credit. Typically, these arrangements have put/call provisions (which range up to seven years) whereby the Company may be obligated (or entitled) to repurchase the financial investors’ interest. The Company has consolidated each of these entities in its consolidated financial statements and has included these investor contributions in accounts payable, accrued expenses and other liabilities.
The Company guarantees to the financial investor that in the event of a subsequent recapture by a taxing authority due to the Company’s noncompliance with applicable tax credit guidelines, it will indemnify the financial investor for any recaptured tax credits. The Company initially records a liability for the cash received from the financial investor. The Company generally records income upon completion and certification of the qualifying development expenditures for historic preservation tax credits and upon certification of the qualifying investments in designated CDEs for new market tax credits, resulting in an adjustment of the liability at each balance sheet date to the amount that would be paid to the financial investor based upon the tax credit compliance regulations, which range from 0 to 7 years. Income related to the sale of tax credits is recorded in interest and other income.
Income Taxes
Deferred tax assets and liabilities are recorded to reflect the expected tax consequences on future years attributable to temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities. The Company has recognized the benefit of its tax loss carryforward, which it expects to use as a reduction of the deferred tax expense. The Company records valuation allowances against deferred tax assets if it is more likely than not a portion or all of the deferred tax asset will not be realized. The Company’s financial statements reflect the expected future tax consequences of a tax position if that tax position is more likely than not of being sustained upon examination, presuming the taxing authorities have full knowledge of the position and all relevant facts. The Company records interest and penalties related to uncertain income tax positions as a component of income tax expense.
Earnings Per Share
The Company’s restricted stock is considered a participating security pursuant to the two-class method for computing basic earnings per share (“EPS”). The Class A Common Units issued in exchange for Bruce C. Ratner’s noncontrolling interests in the Forest City Ratner Company portfolio in November 2006, which are reflected as noncontrolling interests in the Consolidated Balance Sheets, are considered convertible participating securities as they are entitled to participate in dividends paid to the Company’s common shareholders. The Class A Common Units are included in the computation of basic EPS using the two-class method and are included in the computation of diluted EPS using the if-converted method. The Class A common stock issuable in connection with a put or conversion of the Puttable Equity-Linked Senior Notes due 2014 (which were redeemed during 2013), Convertible Senior Notes due 2016, Convertible Senior Notes due 2018, Convertible Senior Notes due 2020 and Series A Cumulative Perpetual Convertible Preferred Stock (which were redeemed during 2013) are included in the computation of diluted EPS using the if-converted method.
2013 Transition Period Comparative Data
The following table presents certain financial information for the 11 months ended December 31, 2013 and 2012, for comparability purposes.
	11 Months Ended December 31,
	2013			2012
				(Unaudited)
	(in thousands)
Revenues	$	998,272		$	963,325
Expenses
Operating expenses	665,818			600,134
Depreciation and amortization	273,054			189,168
Write-offs of abandoned development projects and demolition costs	40,414			14,029
Impairment of real estate	421,361			30,660
Net loss on land held for divestiture activity	7,382			4,457
Total expenses	1,408,029			838,448
Operating income (loss)	(409,757		)	124,877
Interest and other income	52,283			42,245
Net gain on disposition of partial interest in rental properties	496,092			—
Net gain on change in control of interests	2,762			8,351
Interest expense	(285,042		)	(228,980		)
Amortization of mortgage procurement costs	(8,375		)	(9,987		)
Gain on extinguishment of debt	4,549			6,807
Loss before income taxes	(147,488		)	(56,687		)
Income tax expense (benefit)	12,266			(12,430		)
Earnings from unconsolidated entities, including impairment, gross of tax	107,825			84,543
Net gain (loss) on land held for divestiture activity, gross of tax	1,338			(42,606		)
	109,163			41,937
Loss from continuing operations	(50,591		)	(2,320		)
Discontinued operations, net of tax	(20,199		)	59,410
Net earnings (loss)	(70,790		)	57,090
Noncontrolling interests	65,483			(5,635		)
Net earnings (loss) attributable to Forest City Enterprises, Inc.	(5,307		)	51,455
Preferred dividends and inducements of preferred stock conversions	(185		)	(32,129		)
Net earnings (loss) attributable to common shareholders	$	(5,492	)	$	19,326
Supplemental Non-Cash Disclosures
The following table represents a summary of non-cash transactions including, but not limited to, dispositions of operating properties whereby the nonrecourse mortgage debt is assumed by the buyer, exchange of Units or senior debt for Class A common stock, conversion of Series A preferred stock to Class A common stock, changes in consolidation methods due to the occurrence of triggering events including, but not limited to, disposition of a partial interest in rental properties or development projects or acquisition of a partner’s interest, change in construction payables, change in the fair market value of redeemable noncontrolling interest and capitalization of stock-based compensation granted to employees directly involved with the development and construction of real estate.
	Year Ended			11 Months Ended			Year Ended
	December 31, 2014			December 31, 2013			January 31, 2013
	(in thousands)
Investing activities
Decrease in projects under construction and development	$	313,480		$	87,857		$	33,662
(Increase) decrease in completed rental properties	(368,588		)	842,261			170,033
(Increase) decrease in restricted cash	(1,272		)	4,326			14,463
(Increase) decrease in investments in and advances to unconsolidated entities	(202,922		)	(32,078		)	21,826
Total effect on investing activities	$	(259,302	)	$	902,366		$	239,984
Financing activities
Increase in accounts payable, accrued expenses and other liabilities	$	5,552		$	—		$	—
Decrease in nonrecourse mortgage debt and notes payable	(153,345		)	(903,085		)	(215,008		)
Decrease in convertible senior debt	—			(218,675		)	(6,049		)
Decrease in restricted cash	—			—			8,208
Decrease in preferred stock	—			(5,489		)	(209,448		)
Increase in Class A common stock	225			4,680			4,617
Increase in additional paid-in capital	111,150			241,268			200,448
Increase in treasury stock	—			(12,868		)	—
Increase (decrease) in redeemable noncontrolling interest	28,390			(50,546		)	8,424
Increase in noncontrolling interest	44,876			31,702			558
Total effect on financing activities	$	36,848		$	(913,013	)	$	(208,250	)

Notes_and_Accounts_Receivable_

Notes and Accounts Receivable, Net	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Notes and Accounts Receivable, Net	Notes and Accounts Receivable, Net
	The components of notes and accounts receivable, net are as follows:
		December 31, 2014			December 31, 2013
		(dollars in thousands)
	Straight-line rent from tenants	$	131,887		$	135,370
	Military Housing, primarily reimbursable construction costs	27,024			29,771
	Stapleton advances	150,111			145,917
	Tenant receivables	16,298			20,008
	Notes receivable	34,922			38,225
	Other	69,567			101,411
		429,809			470,702
	Allowance for doubtful accounts	(10,771		)	(15,141		)
	Notes and Accounts Receivable, Net	$	419,038		$	455,561
	Weighted average interest rate on notes receivable	6.81		%	6.47		%
	Notes receivable due within one year	$	4,548		$	8,534
	Stapleton Advances
	The Company has made interest-bearing advances to the Park Creek Metropolitan District for in-tract infrastructure at its Stapleton project. The Company recorded $12,252,000, $10,047,000 and $7,893,000 of interest income related to these advances for the year ended December 31, 2014, 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively. The advances had a weighted average interest rate of 8.64% at December 31, 2014.

Investments_in_Unconsolidated_

Investments in Unconsolidated Entities	12 Months Ended
	Dec. 31, 2014
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Investments in Unconsolidated Entities	Investments in Unconsolidated Entities
	The following is a reconciliation of members’ and partners’ equity to the Company’s carrying value:
		December 31, 2014			December 31, 2013
		(in thousands)
	Total members’ and partners’ equity	$	1,234,612		$	798,590
	Equity of other members and partners	1,079,695			777,646
	Company’s net investment in unconsolidated entities	154,917			20,944
	Basis differences (1)	238,606			137,259
	Advances to and on behalf of affiliates	15,450			32,119
	Total Investments in Unconsolidated Entities, net	$	408,973		$	190,322
	Assets - Investments in and advances to unconsolidated entities	$	620,466		$	447,165
	Liabilities - Cash distributions and losses in excess of investments in unconsolidated entities	(211,493		)	(256,843		)
	Total Investments in Unconsolidated Entities, net	$	408,973		$	190,322
	-1	Represents the aggregate difference between the Company’s historical cost basis and the basis reflected at the equity method venture level, which is typically amortized over the life of the related assets or liabilities. Basis differences relate to certain acquisition, transaction and other costs, as well as other-than-temporary impairments not reflected in the net assets at the equity method venture level.
	Summarized financial information for the equity method investments is as follows:
		(Combined 100%)
		December 31, 2014			December 31, 2013
		(in thousands)
	Balance Sheets:
	Real Estate
	Completed rental properties	$	7,982,583		$	8,142,158
	Projects under construction and development	840,797			205,465
	Land inventory	114,301			120,592
	Total Real Estate	8,937,681			8,468,215
	Less accumulated depreciation	(1,716,329		)	(1,676,354		)
	Real Estate, net	7,221,352			6,791,861
	Cash and equivalents	211,533			156,491
	Restricted cash - military housing bond funds	161,460			116,372
	Other restricted cash	381,190			316,315
	Other assets	1,042,420			1,074,972
	Total Assets	$	9,017,955		$	8,456,011
	Mortgage debt and notes payable, nonrecourse	$	7,176,088		$	7,113,515
	Other liabilities	607,255			543,906
	Members’ and partners’ equity	1,234,612			798,590
	Total Liabilities and Members’ and Partners’ Equity	$	9,017,955		$	8,456,011
		(Combined 100%)
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Operations:
	Revenues	$	1,331,875		$	1,160,230		$	1,082,073
	Operating expenses	(791,964		)	(669,548		)	(605,940		)
	Depreciation and amortization	(253,081		)	(207,731		)	(205,002		)
	Net gain (loss) on land held for divestiture activity	—			2,742			(102		)
	Interest and other income	22,693			14,797			17,676
	Net gain on disposition of full or partial interest in rental properties	36,356			—			131,027
	Interest expense including extinguishment of debt	(358,946		)	(311,283		)	(320,566		)
	Earnings (loss) from continuing operations	$	(13,067	)	$	(10,793	)	$	99,166
	Discontinued operations:
	Operating earnings from rental properties	215			4,623			5,387
	Gain on disposition of rental properties	—			68,311			—
	Discontinued operations subtotal	215			72,934			5,387
	Net earnings (loss) (pre-tax)	$	(12,852	)	$	62,141		$	104,553
	Company’s portion of net earnings (loss) (pre-tax)	55,288			75,014			69,320
	Impairment of investments in unconsolidated entities	(3,124		)	—			(390		)
	Impairment of investments in unconsolidated entities with land held for divestiture	—			—			(40,406		)
	Net gain on disposition of full or partial interest in equity method investments	34,744			34,149			16,107
	Net earnings (pre-tax) from unconsolidated entities	$	86,908		$	109,163		$	44,631
	Net Gain on Disposition of Full or Partial Interest in Rental Properties and Equity Method Investments
	Gains and losses on the disposition or partial disposition of unconsolidated entities are included in equity in earnings and are summarized as follows:
			Year Ended			11 Months Ended			Year Ended
			December 31, 2014			December 31, 2013			January 31, 2013
			(in thousands)
	Net gain on disposition of full or partial interest in rental properties:
Golden Gate (Specialty Retail Center)	Mayfield Heights, Ohio	$	33,881		$	—		$	—
Liberty Center (Office Building)	Pittsburgh, Pennsylvania	2,475			2,829			—
Westin Convention Center (Hotel)	Pittsburgh, Pennsylvania	—			65,482			—
8 Spruce Street (Apartment Community)	Manhattan, New York	—			—			131,027
Total gain on disposition of full or partial interest in rental properties		$	36,356		$	68,311		$	131,027
Company’s portion of gain on disposition of full or partial interest in rental properties		$	17,677		$	34,281		$	34,959
Net gain (loss) on disposition of full or partial interest in equity method investments:
Apartment Communities:
Westwood Reserve	Tampa, Florida	$	8,904		$	—		$	—
Legacy Crossroads	Cary, North Carolina	6,216			—			—
Colonial Grand	Tampa, Florida	4,904			—			—
Legacy Arboretum	Charlotte, North Carolina	3,257			—			—
Woodgate / Evergreen Farms	Olmsted Township, Ohio	2,346			—			—
Barrington Place	Raleigh, North Carolina	1,515			—			—
Regional Malls:
Mall at Stonecrest	Atlanta, Georgia	7,952			—			—
Charleston Town Center	Charleston, West Virginia	—			27,080			—
Specialty Retail Centers:
Marketplace at Riverpark	Fresno, California	—			8,579			—
Plaza at Robinson Town Center	Pittsburgh, Pennsylvania	—			(1,510		)	—
Village at Gulfstream Park	Hallandale Beach, Florida	—			—			14,479
Chagrin Plaza I & II (Office Buildings)	Beachwood, Ohio	—			—			1,628
Other		(350		)	—			—
Total gain on disposition of full or partial interest in equity method investments		$	34,744		$	34,149		$	16,107

Other_Assets

Other Assets	12 Months Ended
	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Other Assets
	The components of other assets are as follows:
		December 31, 2014		December 31, 2013
		(in thousands)
	Lease procurement costs, net	$	101,773	$	104,733
	Prepaid expenses and other deferred costs, net	112,484		142,465
	Intangible assets, net	123,778		105,364
	Mortgage procurement costs, net	71,331		62,754
	Other Assets	$	409,366	$	415,316
	During the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, the Company recorded $3,509,000, $4,311,000 and $4,715,000, respectively, of amortization expense related to intangible assets.
	The estimated amortization expense related to intangible assets for the next five years is as follows:
	Years Ending December 31,
		(in thousands)
	2015	$	7,526
	2016	6,786
	2017	6,510
	2018	6,811
	2019	3,165

Mortgage_Debt_and_Notes_Payabl

Mortgage Debt and Notes Payable, Nonrecourse	12 Months Ended
	Dec. 31, 2014
Mortgage Debt and Notes Payable, Nonrecourse [Abstract]
Mortgage Debt and Notes Payable, Nonrecourse	Mortgage Debt and Notes Payable, Nonrecourse
	Nonrecourse mortgage debt and notes payable, including balances associated with development project held for sale, which is collateralized solely by completed rental properties, projects under construction and development and undeveloped land, was as follows:
	December 31, 2014	Operating		Development		Total		Total Weighted Average Rate
		Properties		Projects
		(dollars in thousands)
	Fixed	$	2,234,801	$	58,790	$	2,293,591	5.57	%
	Variable
	Taxable	1,327,961		19,804		1,347,765		4.85	%
	Tax-Exempt	551,845		45,000		596,845		1.45	%
		$	4,114,607	$	123,594	$	4,238,201	4.76	%
	December 31, 2013	Operating		Development		Total		Total Weighted Average Rate
		Properties		Projects
		(dollars in thousands)
	Fixed	$	2,286,555	$	294,782	$	2,581,337	5.28	%
	Variable
	Taxable	1,381,225		51,500		1,432,725		4.81	%
	Tax-Exempt	511,889		53,555		565,444		1.47	%
		$	4,179,669	$	399,837	$	4,579,506	4.66	%
	The following table summarizes the mortgage debt and notes payable, nonrecourse maturities, as of December 31, 2014:
	Years Ending December 31,	Total
		Maturities
		(in thousands)
	2015	$	508,376
	2016	142,979
	2017	1,178,626
	2018	271,688
	2019	300,338
	Thereafter	1,836,194
	Total	$	4,238,201
	At December 31, 2014 ,the Company received a notice of default on a $45,000,000 nonrecourse mortgage. Subsequent to December 31, 2014, the Company has entered into a forbearance agreement which expires on April 8, 2015. In the event the Company is unable to complete the negotiation of a longer term agreement, or cure the default, the Company may be required to repay the current outstanding balance, currently secured by, amongst other things,$37,500,000 of restricted bond proceeds included in restricted cash, $10,000,000 of cash in escrow and an equity letter of credit of $9,300,000.

Revolving_Credit_Facility

Revolving Credit Facility	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Revolving Credit Facility	Revolving Credit Facility
	The Company’s Fourth Amended and Restated Credit Agreement and Fourth Amended and Restated Guaranty of Payment of Debt, as amended to the date hereof (collectively, the “Credit Facility”), provides total available borrowings of $500,000,000, subject to certain reserve commitments to be established, as applicable, on certain dates to be used to retire convertible senior debt that becomes due during the term of the agreement. The Credit Facility matures on February 21, 2016 and provides for one, 12-month extension option, subject to certain conditions. Borrowings bear interest at London Interbank Offered Rate (“LIBOR”) plus 3.50%. Up to $100,000,000 of the available borrowings may be used, in the aggregate, for letters of credit and/or surety bonds. The Credit Facility has restrictive covenants, including a prohibition on certain consolidations and mergers, limitations on the amount of debt, guarantees and property liens and restrictions on the pledging of ownership interests in subsidiaries. The Company may repurchase up to $100,000,000 of Class A common stock and declare or pay dividends in an amount not to exceed $24,000,000 in the aggregate in any four quarter period to Class A or B common shareholders, subject to certain conditions. The Credit Facility contains development limitations and financial covenants, including the maintenance of minimum liquidity, debt yield, debt service and cash flow coverage ratios, and specified levels of shareholders’ equity (all as specified in the Credit Facility). At December 31, 2014, the Company was in compliance with all of these financial covenants.
	The following table summarizes the available credit on the Credit Facility:
		December 31, 2014		December 31, 2013
		(in thousands)
	Maximum borrowings	$	500,000	$	500,000
	Less outstanding balances:
	Borrowings	—		—
	Letters of credit	85,768		59,760
	Surety bonds	—		—
	Available credit	$	414,232	$	440,240

Convertible_Senior_Debt

Convertible Senior Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Convertible Senior Debt	Convertible Senior Debt
	The following table summarizes the Company’s convertible senior debt:
		December 31, 2014			December 31, 2013
		(in thousands)
	5.000% Notes due 2016	$	50,000		$	50,000
	4.250% Notes due 2018	350,000			350,000
	3.625% Notes due 2020	300,000			300,000
	Total	$	700,000		$	700,000
	As of December 31, 2014, all of the remaining outstanding senior notes are convertible into Class A common stock based on conversion prices ranging from $13.91 to $24.21 per Class A common share.
	All of the senior debt are unsecured senior obligations and rank equally with all existing and future unsecured indebtedness; however, they are effectively subordinated to the Credit Facility and all existing and future secured indebtedness and other liabilities of the Company’s subsidiaries to the extent of the value of the collateral securing that other debt.
	Convertible Senior Notes due 2016
	In October 2009, the Company issued $200,000,000 of 5.000% Convertible Senior Notes due October 15, 2016 (“2016 Senior Notes”) in a private placement. The 2016 Senior Notes were issued at par and accrued interest is payable semi-annually on April 15 and October 15.
	During 2011, the Company entered into separate, privately negotiated exchange agreements with certain holders of the 2016 Senior Notes to exchange $150,000,000 of such notes for 13,218,332 shares of Class A common stock.
	Holders may convert the remaining 2016 Senior Notes at their option at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date. Upon conversion, a noteholder would receive 71.8894 shares of Class A common stock per $1,000 principal amount of 2016 Senior Notes, based on a conversion price of approximately $13.91 per share of Class A common stock, subject to adjustment. The amount payable upon a conversion is only payable in shares of the Company’s Class A common stock, except for cash paid in lieu of fractional shares.
	In connection with the issuance of the 2016 Senior Notes, the Company entered into a convertible note hedge transaction. The convertible note hedge transaction is intended to reduce, subject to a limit, the potential dilution with respect to the Company’s Class A common stock upon conversion of the 2016 Senior Notes. The net effect of the convertible note hedge transaction, from the Company’s perspective, is to approximate an effective conversion price of $16.37 per share. The terms of the 2016 Senior Notes were not affected by the convertible note hedge transaction. The convertible note hedge transaction was recorded as a reduction of shareholders’ equity through additional paid in capital.
	Convertible Senior Notes due 2018
	In July 2011, the Company issued $350,000,000 of 4.250% Convertible Senior Notes due August 15, 2018 (“2018 Senior Notes”) in a private placement. The 2018 Senior Notes were issued at par and accrued interest is payable semi-annually on February 15 and August 15.
	Holders may convert their 2018 Senior Notes at their option at any time prior to the close of business on the scheduled trading day immediately preceding the maturity date. Upon conversion, a noteholder would receive 46.1425 shares of Class A common stock per $1,000 principal amount of 2018 Senior Notes, based on a conversion price of approximately $21.67 per share of Class A common stock, subject to adjustment. The amount payable upon a conversion is only payable in shares of Class A common stock, except for cash paid in lieu of fractional shares. If the daily volume weighted average price of the Class A common stock has equaled or exceeded 130% ($28.17 at December 31, 2014) of the conversion price then in effect for at least 20 trading days in any 30 trading day period, the Company may, at its option, elect to terminate the conversion rights of the holders at any time. If it so elects, the Company is required to issue a conversion rights termination notice that designates an effective date on which the holders conversion rights will be terminated, which shall be a date at least 20 days after the mailing of such conversion rights termination notice.
	Convertible Senior Notes due 2020
	In July 2013, the Company issued $300,000,000 of 3.625% Convertible Senior Notes due August 15, 2020 (“2020 Senior Notes”) in a private placement. The 2020 Senior Notes were issued at par and accrued interest is payable semi-annually on February 15 and August 15, beginning February 15, 2014.
	Holders may convert their 2020 Senior Notes at their option at any time prior to the close of business on the scheduled trading day immediately preceding the maturity date. Upon conversion, a noteholder would receive 41.3129 shares of Class A common stock per $1,000 principal amount of 2020 Senior Notes converted, based on a conversion price of approximately $24.21 per share of Class A common stock, subject to adjustment. The amount payable upon a conversion of the 2020 Senior Notes is only payable in shares of Class A common stock, except for cash paid in lieu of fractional shares. If the daily volume weighted average price of the Class A common stock has equaled or exceeded 130% ($31.47 at December 31, 2014) of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any period of 30 consecutive trading days, the Company may, at its option, elect to redeem any or all of the 2020 Senior Notes at any time up to August 15, 2018 at par, plus accrued and unpaid interest. If elected, the Company is required to issue a redemption notice that designates the effective date the 2020 Senior Notes will be redeemed, which shall be a date at least 30 days (but not more than 60 days) after the mailing of such redemption notice (the “Redemption Date”). Holders electing to convert their 2020 Senior Notes after the mailing of a redemption notice and before the Redemption Date shall in certain circumstances be entitled to receive a make-whole premium payable in additional shares of Class A common stock.
	Consolidated Interest Expense
	The following table summarizes interest incurred, capitalized and paid on all forms of indebtedness (included in Notes E, F and G):
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Interest incurred	$	258,816		$	301,735		$	349,418
	Interest capitalized	(24,411		)	(16,693		)	(96,094		)
	Net interest expense	$	234,405		$	285,042		$	253,324
	Interest incurred from discontinued operations	$	5,538		$	12,015		$	23,167
	Cash paid for interest (net of amount capitalized)	$	235,373		$	292,692		$	291,509

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities
	Risk Management Objective of Using Derivatives
	The Company maintains an overall interest rate risk management strategy using derivative instruments to minimize significant unplanned impact on earnings and cash flows that may be caused by interest rate volatility. The strategy includes the use of interest rate swaps and option contracts having indices related to the pricing of specific liabilities. The Company enters into interest rate swaps to convert floating-rate debt to fixed-rate long-term debt, and vice-versa, depending on market conditions, or forward starting swaps to hedge the changes in benchmark interest rates on forecasted financings. Interest rate swaps are generally for periods of one to ten years. Option products used are primarily interest rate caps for periods of one to three years. The use of option products is consistent with the Company’s risk management objective to reduce or eliminate exposure to variability in future cash flows primarily attributable to changes in benchmark rates relating to forecasted financings, and the variability in cash flows attributable to increases relating to interest payments on its floating-rate debt.
	Cash Flow Hedges of Interest Rate Risk
	The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage exposure to interest rate movements. The Company primarily uses interest rate caps and swaps as part of its interest rate risk management strategy. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an upfront premium. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.
	The effective portion of changes in the fair value of derivatives designated and qualifying as cash flow hedges is recorded in accumulated OCI and is subsequently reclassified into earnings during the period the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the year ended December 31, 2014, the Company recorded $3,673,000 as an increase to interest expense related to ineffectiveness from a missed forecasted transaction arising from the early reclassification of OCI related to debt associated with an entity disposed of during the year ended December 31, 2014. During the 11 months ended December 31, 2013, the Company recorded $2,963,000 as an increase to interest expense related to ineffectiveness arising primarily from the early reclassification of OCI related to debt associated with entities included in the partial disposition of real estate. The hedged debt for these entities was deconsolidated and is now accounted for under the equity method of accounting. The increase to interest expense was also related to ineffectiveness arising from the early termination of an interest rate swap. The swap was terminated because the hedged debt was paid off early as a result of an asset sale. The amount of ineffectiveness charged to earnings was insignificant for the year ended January 31, 2013. As of December 31, 2014, the Company expects it will reclassify amounts recorded in accumulated OCI into earnings as an increase in interest expense of approximately $24,152,000, net of tax, within the next twelve months. However, the actual amount reclassified could vary due to future changes in fair value of these derivatives.
	Fair Value Hedges of Interest Rate Risk
	The Company enters into total rate of return swaps (“TROR”) on various tax-exempt fixed-rate borrowings. The TROR convert borrowings from a fixed rate to a variable rate. In exchange for a fixed rate, the TROR requires the payment of a variable interest rate, generally equivalent to the Securities Industry and Financial Markets Association (“SIFMA”) rate (0.03% at December 31, 2014) plus a spread. Additionally, the Company has guaranteed the fair value of the underlying borrowings. Fluctuation in the value of the TROR is offset by the fluctuation in the value of the underlying borrowings, resulting in minimal financial impact. At December 31, 2014, the aggregate notional amount of TROR designated as fair value hedging instruments is $366,985,000. The underlying TROR borrowings are subject to a fair value adjustment.
	Nondesignated Hedges of Interest Rate Risk
	The Company uses derivative contracts to hedge certain interest rate risk, even though the contracts do not qualify for, or the Company has elected not to apply, hedge accounting. In these situations, the derivative is recorded at its fair value with changes reflected in earnings.
	In instances where the Company enters into separate derivative instruments effectively hedging the same debt for consecutive annual periods, the duplicate amount of notional is excluded from the following disclosure in an effort to provide information that enables the financial statement user to understand the Company’s volume of derivative activity. The following table presents the fair values and location in the Consolidated Balance Sheets of all derivative instruments:
		Fair Value of Derivative Instruments
		December 31, 2014
		Asset Derivatives						Liability Derivatives
		(included in Other Assets)						(included in Accounts Payable, Accrued Expenses and Other Liabilities)
		Current		Fair Value				Current			Fair Value
		Notional						Notional
		(in thousands)
	Derivatives Designated as Hedging Instruments
	Interest rate caps	$	330,000	$	114			$	—		$	—
	Interest rate swaps	—		—				869,154			75,281
	TROR	149,200		6,379				217,785			11,983
	Total	$	479,200	$	6,493			$	1,086,939		$	87,264
	Derivatives Not Designated as Hedging Instruments
	Interest rate caps	$	205,522	$	12			$	—		$	—
	TROR	101,410		1,857				38,425			15,098
	Total	$	306,932	$	1,869			$	38,425		$	15,098
		December 31, 2013
	Derivatives Designated as Hedging Instruments
	Interest rate swaps	$	—	$	—			$	961,359		$	97,858
	TROR	18,970		903				339,785			9,772
	Total	$	18,970	$	903			$	1,301,144		$	107,630
	Derivatives Not Designated as Hedging Instruments
	Interest rate caps	$	447,532	$	155			$	—		$	—
	TROR	—		—				39,052			15,477
	Total	$	447,532	$	155			$	39,052		$	15,477
	The following tables present the impact of gains and losses related to derivative instruments designated as cash flow hedges included in the accumulated OCI section of the Consolidated Balance Sheets and in equity in earnings and interest expense in the Consolidated Statements of Operations:
					Gain (Loss) Reclassified from
					Accumulated OCI
	Derivatives Designated as	Gain (Loss) Recognized in OCI			Location on Consolidated Statements of Operations	Effective			Ineffective
	Cash Flow Hedging Instruments	(Effective Portion)				Amount			Amount
		(in thousands)
	Year Ended December 31, 2014
	Interest rate caps and interest rate swaps	$	22,733		Interest expense	$	(2,516	)	$	(7	)
	Interest rate swap	—			Discontinued operations	—			(3,666		)
	Interest rate swaps	—			Equity in earnings	(59		)	—
	Total	$	22,733			$	(2,575	)	$	(3,673	)
	11 Months Ended December 31, 2013
	Interest rate swaps	$	37,094		Interest expense	$	(3,295	)	$	(2,963	)
	Interest rate caps and interest rate swaps	—			Equity in earnings	(86		)	4
	Total	$	37,094			$	(3,381	)	$	(2,959	)
	Year Ended January 31, 2013
	Interest rate caps, interest rate swaps and Treasury options	$	21,601		Interest expense	$	(3,916	)	$	—
	Interest rate caps, interest rate swaps and Treasury options	—			Equity in earnings	(342		)	14
	Total	$	21,601			$	(4,258	)	$	14
	The following table presents the impact of gains and losses related to derivatives instruments not designated as cash flow hedges in the Consolidated Statements of Operations:
		Net Gain (Loss) Recognized
		Year Ended		11 Months Ended			Year Ended
		December 31, 2014		December 31, 2013			January 31, 2013
		(in thousands)
	Derivatives Designated as Fair Value Hedging Instruments
	TROR (1)	$	3,265	$	1,081		$	(770	)
	Derivatives Not Designated as Hedging Instruments
	Interest rate caps and interest rate swaps	$	17	$	(319	)	$	(922	)
TROR	2,236		(1,091		)	12,568
Total	$	2,253	$	(1,410	)	$	11,646
-1	The net gain (loss) recognized in interest expense from the change in fair value of the underlying TROR borrowings was $(3,265), $(1,081) and $770 for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively, offsetting the gain (loss) recognized on the TROR.
Credit-risk-related Contingent Features
The principal credit risk of the Company’s interest rate risk management strategy is the potential inability of a counterparty to cover its obligations. If a counterparty fails to fulfill its obligation, the risk of loss approximates the fair value of the derivative. To mitigate this exposure, the Company generally purchases derivative financial instruments from the financial institution that issues the related debt, from financial institutions with which the Company has other lending relationships, or from financial institutions with a minimum credit rating of AA at the time of the transaction.
Agreements with derivative counterparties containing provisions under which the counterparty could terminate the derivative obligations if the Company defaults on its obligations under the Credit Facility and designated conditions are fulfilled. In instances where the Company’s subsidiaries have derivative obligations secured by a mortgage, the derivative obligations could be terminated if the indebtedness between the two parties is terminated, either by loan payoff or default of the indebtedness. In addition, certain derivative contracts provide that if the Company’s credit rating falls below certain levels, it may trigger additional collateral to be posted with the counterparty up to the full amount of the liability position of the derivative contracts. The majority of derivative instruments are held at the property level and do not contain credit-risk related contingent features, such as a credit rating downgrade. Also, certain subsidiaries have agreements containing provisions whereby the subsidiaries must maintain certain minimum financial ratios.
The following table presents information about collateral posted for derivatives in liability positions as of December 31, 2014:
	Collateral Information
	Notional Amount		Fair Value Prior to Nonperformance Risk			Nonperformance Risk			Collateral Posted			Nature of Collateral	Credit Risk Contingent Feature
	(in thousands)
Property Specific Swaps	$	669,154	$	79,126		$	(3,846	)	$	—		Mortgage liens	None
TROR	256,210		27,023			58			52,811			Restricted cash, notes receivable, letters of credit	None
Corporate Aggregate Swaps	200,000		1			—			170			Restricted cash	Credit rating
Totals	$	1,125,364	$	106,150		$	(3,788	)	$	52,981

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	The Company’s financial assets and liabilities subject to fair value measurements are interest rate caps, interest rate swaps, TROR and borrowings subject to TROR (see Note H – Derivative Instruments and Hedging Activities). Impairment of real estate and unconsolidated entities is also subject to fair value measurements (see Note Q – Impairment of Real Estate and Impairment of Unconsolidated Entities, Note R – Net Gain (Loss) on Land Held for Divestiture Activity and Note X – Discontinued Operations and Gain (Loss) on Disposition of Rental Properties).
	Fair Value Hierarchy
	The accounting guidance related to estimating fair value specifies a hierarchy of valuation techniques based upon whether the inputs to those valuation techniques reflect assumptions other market participants would use based upon market data obtained from independent sources (also referred to as observable inputs). The following summarizes the fair value hierarchy:
	•	Level 1 – Quoted prices in active markets that are unadjusted and accessible at the measurement date for identical, unrestricted assets or liabilities;
	•	Level 2 – Quoted prices for identical assets and liabilities in markets that are not active, quoted prices for similar assets and liabilities in active markets or financial instruments for which significant observable inputs are available, either directly or indirectly, such as interest rates and yield curves that are observable at commonly quoted intervals; and
	•	Level 3 – Prices or valuations that require inputs that are unobservable.
	Inputs used to measure fair value may fall into different levels of the fair value hierarchy. In these cases, the level in the fair value hierarchy is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.
	Measurement of Fair Value
	The Company estimates the fair value of its hedging instruments based on interest rate market and bond pricing models. Although the Company has determined the significant inputs used to value its hedging instruments fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with the Company’s counterparties and its own credit risk utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. As of December 31, 2014, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its hedging instruments’ positions and has determined the credit valuation adjustments are significant to the overall valuation of one interest rate swap and are not significant to the overall valuation of all of its other hedging instruments. As a result, one interest rate swap is classified in Level 3 and the remaining hedging instruments valuations are classified in Level 2.
	The Company’s TROR have termination values equal to the difference between the fair value of the underlying bonds and the bonds base (acquired) price times the stated par amount of the bonds. Upon termination of the contract with the counterparty, the Company is entitled to receive the termination value if the underlying fair value of the bonds is greater than the base price and is obligated to pay the termination value if the underlying fair value of the bonds is less than the base price. The underlying borrowings generally have call features at par and without prepayment penalties. The call features of the underlying borrowings would result in a significant discount factor to any value attributed to the exchange of cash flows in these contracts by another market participant willing to purchase the Company’s positions. Therefore, the Company believes the termination value of the TROR approximates the fair value another market participant would assign to these contracts. The Company compares estimates of fair value to those provided by the respective counterparties on a quarterly basis. The Company has determined its fair value estimate of TROR is classified in Level 3 of the fair value hierarchy.
	To determine the fair value of the underlying borrowings subject to TROR, the base price is initially used as the estimate of fair value. The Company adjusts the fair value based upon observable and unobservable measures such as the financial performance of the underlying collateral, interest rate risk spreads for similar transactions and loan to value ratios. In the absence of such evidence, management’s best estimate is used. At December 31, 2014, the notional amount of TROR borrowings subject to fair value adjustments is approximately $366,985,000.
	Items Measured at Fair Value on a Recurring Basis
	The Company’s financial assets consist of interest rate caps, interest rate swaps and TROR with positive fair values included in other assets. The Company’s financial liabilities consist of interest rate swaps and TROR with negative fair values included in accounts payable, accrued expenses and other liabilities and borrowings subject to TROR included in mortgage debt and notes payable, nonrecourse.
	The Company records the redeemable noncontrolling interest related to Brooklyn Arena, LLC at redemption value, which approximates fair value. In the event the historical cost of the redeemable noncontrolling interest, which represents initial cost, adjusted for contributions, distributions and the allocation of profits or losses, is in excess of estimated fair value, the Company records the redeemable noncontrolling interest at historical cost.
	The following table presents information about financial assets and liabilities and redeemable noncontrolling interest measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value:
		Fair Value Measurements
		December 31, 2014
		Level 1			Level 2			Level 3			Total
		(in thousands)
	Interest rate caps	$	—		$	126		$	—		$	126
	Interest rate swaps (liabilities)	—			(1,745		)	(73,536		)	(75,281		)
	TROR (assets)	—			—			8,236			8,236
	TROR (liabilities)	—			—			(27,081		)	(27,081		)
	Fair value adjustment to the borrowings subject to TROR	—			—			5,604			5,604
	Redeemable noncontrolling interest (1)	—			—			(183,038		)	(183,038		)
	Total	$	—		$	(1,619	)	$	(269,815	)	$	(271,434	)
		December 31, 2013
		Level 1			Level 2			Level 3			Total
		(in thousands)
	Interest rate caps	$	—		$	155		$	—		$	155
	Interest rate swaps (liabilities)	—			(498		)	(97,360		)	(97,858		)
	TROR (assets)	—			—			903			903
	TROR (liabilities)	—			—			(25,249		)	(25,249		)
	Fair value adjustment to the borrowings subject to TROR	—			—			8,869			8,869
	Redeemable noncontrolling interest	—			—			(171,743		)	(171,743		)
	Total	$	—		$	(343	)	$	(284,580	)	$	(284,923	)
	-1	As of December 31, 2014, the redeemable noncontrolling interest is recorded at historical cost.
	The following table presents a reconciliation of all financial assets and liabilities and redeemable noncontrolling interest measured at fair value on a recurring basis using significant unobservable inputs (Level 3):
		Fair Value Measurements
		Redeemable				Interest Rate				Net			Fair value			Total			Total
		Noncontrolling				Swaps				TROR			adjustment			TROR
		Interest											to the borrowings			Related
													subject to TROR
		(in thousands)
	Balance, February 1, 2013	$	(239,136	)		$	(126,506	)		$	(5,136	)	$	9,950		$	4,814		$	(360,828	)
	Loss attributable to redeemable noncontrolling interest	16,847				—				—			—			—			16,847
	Total realized and unrealized gains (losses):
	Included in earnings	—				—				(10		)	(1,081		)	(1,091		)	(1,091		)
	Included in other comprehensive income	—				29,146				—			—			—			29,146
	Included in additional paid-in capital	50,546				—				—			—			—			50,546
	Settlement	—				—				(19,200		)	—			(19,200		)	(19,200		)
	Balance, December 31, 2013	$	(171,743	)		$	(97,360	)		$	(24,346	)	$	8,869		$	(15,477	)	$	(284,580	)
	Loss attributable to redeemable noncontrolling interest	17,095				—				—			—			—			17,095
	Total realized and unrealized gains (losses):
	Included in earnings	—				—				5,501			(3,265		)	2,236			2,236
	Included in other comprehensive income	—				23,824				—			—			—			23,824
	Included in additional paid-in capital	(28,390		)		—				—			—			—			(28,390		)
	Balance, December 31, 2014	$	(183,038	)		$	(73,536	)		$	(18,845	)	$	5,604		$	(13,241	)	$	(269,815	)
	As of December 31, 2013, the fair value of the redeemable noncontrolling interest was incorrectly recorded and presented at less than the historical cost. Management evaluated the impact of the error and determined the previously issued financial statements were not materially misstated. Additionally, management determined the impact of correcting the presentation of the redeemable noncontrolling interest is not material to the current period financial statements. Accordingly, at March 31, 2014, the Company corrected the carrying value of the redeemable noncontrolling interest by recording an adjustment of $28,390,000 to increase the redeemable noncontrolling interest with a corresponding decrease to additional paid-in capital. Such amount should have been reflected at December 31, 2013.
	The following table presents quantitative information about the significant unobservable inputs used to estimate the fair value of financial instruments measured on a recurring basis as of December 31, 2014:
		Quantitative Information about Level 3 Fair Value Measurements
		Fair Value December 31, 2014			Valuation	Unobservable	Input Values
					Technique	Input
	(in thousands)
Credit valuation adjustment of interest rate swap	$	3,740		Potential future exposure	Credit spread	4.00%
TROR	$	(18,845	)	Third party bond pricing	Bond valuation	75.59 - 109.71
Fair value adjustment to the borrowings subject to TROR	$	5,604		Third party bond pricing	Bond valuation	75.59 - 109.71
Third party service providers involved in fair value measurements are evaluated for competency and qualifications. Fair value measurements, including unobservable inputs, are evaluated based on current transactions and experience in the real estate and capital markets.
The impact of changes in unobservable inputs used to determine the fair market value of the credit valuation adjustment, TROR and fair value adjustment to the borrowings subject to TROR are not deemed to be significant.
Fair Value of Other Financial Instruments
The carrying amount of notes and accounts receivable, excluding the Stapleton advances, and accounts payable, accrued expenses and other liabilities approximates fair value based upon the short-term nature of the instruments or the prevailing interest rate if long-term. The carrying amount of the Stapleton advances approximates fair value since the interest rates on these advances approximates current market rates. The Company estimates the fair value of its debt instruments by discounting future cash payments at interest rates the Company believes approximate the current market. Estimated fair value is based upon market prices of public debt, available industry financing data, current treasury rates, recent financing transactions and loan to value ratios. The fair value of the Company’s debt instruments is classified as Level 3 in the fair value hierarchy.
The following table summarizes the fair value of nonrecourse mortgage debt and notes payable (exclusive of the fair value of derivatives), revolving credit facility, convertible senior debt and nonrecourse mortgage debt of development property held for sale:
	December 31, 2014							December 31, 2013
	Carrying Value			Fair Value				Carrying Value			Fair Value
	(in thousands)
Fixed Rate Debt	$	2,993,591		$	3,421,373			$	3,281,337		$	3,488,406
Variable Rate Debt	1,944,610			1,924,823				1,998,169			1,954,136
Total	$	4,938,201		$	5,346,196			$	5,279,506		$	5,442,542

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	The Company has various guarantees, including indirect guarantees of indebtedness of others. The Company believes the risk of payment under these guarantees, as described below, is remote and, to date, no payments have been made under these guarantees.
	As of December 31, 2014, the Company had $2,850,000 in guarantees associated with various obligations. The Company had outstanding letters of credit of $85,768,000 as of December 31, 2014, which represents the maximum potential amount of future payments on the letters of credit the Company could be required to make.
	The Company has entered into certain partnerships whereby the outside investment partner is allocated certain tax credits. These partnerships typically require the Company to indemnify, on an after-tax or “grossed up” basis, the investment partner against the failure to receive or the loss of allocated tax credits and tax losses. At December 31, 2014, the maximum potential payment under these tax indemnity guarantees was approximately $154,855,000. The maximum potential payment includes an actual liability of $13,423,000 related to an agreement the Company entered into with one historic tax credit investment partner that is included in accounts payable, accrued expenses and other liabilities at December 31, 2014. The agreement obligates the Company to reimburse the tax credit partner for the full amount of the tax credit allocated to them in a prior year. The agreement was a result of an Internal Revenue Service (“IRS”) audit inquiry related to the validity of the tax credit Partnership structure. The IRS audit did not question the qualifying expenditures or the validity of the actual tax credit. The Company believes it will be able to fully utilize these Federal tax credits on its 2015 Federal income tax return. Although the Company believes the tax credit partnership was in full compliance with IRC section 47, and the tax credit itself is valid, the Company and its tax credit partner decided not to pursue an audit appeal and entered into the agreement to avoid the lengthy and costly process of an audit appeal. As a result, the Company recorded an $11,746,000 reduction to interest and other income which represents the reversal of the tax credit income previously recognized on this individual tax credit plus the additional amount owed to our tax credit partner under the agreement and a $13,423,000 deferred tax benefit for the recognition of a deferred tax asset related to the tax credit. The Company believes all remaining requirements for qualifications of tax credits and partnership structures have been and will continue to be met and the Company’s investment partners will be able to receive expense allocations associated with the properties. The Company does not expect to make any remaining payments under these guarantees, other than discussed above.
	The Company’s mortgage loans are nonrecourse; however, in some cases, lenders carve out certain items from the nonrecourse provisions. These carve-out items enable the lenders to seek recourse if the Company or the joint venture engages in certain acts as defined in the respective agreements such as commit fraud, intentionally misapply funds, or intentionally misrepresent facts. The Company has also provided certain environmental guarantees. Under these environmental remediation guarantees, the Company must remediate any hazardous materials brought onto the property in violation of environmental laws. The maximum potential amount of future payments the Company could be required to make on the environmental guarantees is limited to the actual losses suffered or actual remediation costs incurred. A portion of these carve-outs and guarantees have been made on behalf of joint ventures and the Company believes any liability would not exceed its partners’ share of the outstanding principal balance of the loans in which these carve-outs and environmental guarantees have been made. At December 31, 2014, the outstanding balance of the partners’ share of these loans was approximately $1,241,231,000. The Company believes the risk of payment on the carve-out guarantees is mitigated, in most cases, by the fact that the Company manages the property, and in the event the Company’s partner violated one of the carve-out items, the Company would seek recovery from its partner for any payments the Company would make. Additionally, the Company further mitigates its exposure through environmental insurance and other types of insurance coverage.
	The Company monitors its properties for the presence of hazardous or toxic substances. Other than those environmental matters identified during the acquisition of a site (which are generally remediated prior to the commencement of development), the Company is not aware of any environmental liability with respect to its operating properties that would have a material adverse effect on its financial position, cash flows or results of operations. However, there can be no assurance such a material environmental liability does not exist. The existence of any such material environmental liability could have an adverse effect on the Company’s results of operations and cash flow. The Company carries environmental insurance and believes the policy terms, conditions, limits and deductibles are adequate and appropriate under the circumstances, given the relative risk of loss, the cost of such coverage and current industry practice.
	The Company customarily guarantees lien-free completion of projects under construction. Upon completion, as defined, the guarantees are released. The Company currently provides the following completion guarantees on its completed projects and projects under construction and development (including unconsolidated properties):
		Total Costs		Percent
				Completed (Unaudited)
		(dollars in thousands)
	At December 31, 2014
	Openings and acquisitions	$	1,548,943	97	%
	Under construction	1,185,190		30	%
	Total Real Estate	$	2,734,133	68	%
	Additionally, the Company has provided a guaranty of payment, performance and completion of certain obligations associated with certain Military Housing Privatization Initiative (“MHPI”) projects. These guarantees do not include a guaranty of available MHPI project funds and the Company cannot be compelled to replace a deficiency in funding. In the event the guaranty were called upon, any money advanced by the Company would be replaced by funds available within the MHPI project. Inclusive of the available MHPI project funds, the Company believes its maximum net exposure to be $198,951,000 at December 31, 2014. Currently, the Company anticipates further MHPI project funds will cover this maximum exposure and future advances by the Company will not be required.
	In addition to what is stated above, the Company has guaranteed the lender the lien free completion of certain horizontal infrastructure associated with certain land development projects. The maximum amount due by the Company under these completion guarantees is limited to $55,932,000.
	The Company is also involved in certain claims and litigation related to its operations and development. Based on the facts known at this time, management has consulted with legal counsel and is of the opinion that the ultimate outcome of all such claims and litigation will not have a material adverse effect on the financial condition, results of operations or cash flows of the Company.
	In connection with the Company’s (through its subsidiary, Nets Sports and Entertainment LLC (“NS&E”)) August 2004 purchase of the Nets and its May 12, 2010 sale of an 80% interest in the Nets, the Company, certain subsidiaries and certain members have provided an indemnity guarantee to the NBA for any losses arising from the transaction, including the relocation of the team. The Company’s indemnity is effective as long as the Company owns an interest in the team. The indemnification provisions are standard provisions required by the NBA. The Company and the other indemnifying parties have insurance coverage of $100,000,000 in connection with this indemnity. The Company evaluated the indemnity guarantee and determined the fair value of the Company’s known liability for its obligations under the guarantee was not material.
	Certain ground leases include provisions requiring the Company to indemnify the ground lessor against claims or damages occurring on or about the leased property during the term of the ground lease. These indemnities generally were entered into prior to the effective date of accounting guidance related to guarantees; therefore, they have not been recorded in the Company’s consolidated financial statements at December 31, 2014. The maximum potential amount of future payments the Company could be required to make is limited to the actual losses suffered. The Company mitigates its exposure to loss related to these indemnities through insurance coverage.
	The Company is party to an easement agreement under which it has agreed to indemnify a third party for any claims or damages arising from the use of the easement area in one of its unconsolidated apartment communities. The Company mitigates its exposure to loss related to the easement agreement through insurance coverage.

Capital_Stock

Capital Stock	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Capital Stock	Capital Stock
	Common Stock
	The Company’s authorized common stock consists of Class A common stock and Class B common stock. The economic rights of each class of common stock are identical, but the voting rights differ. The Class A common stock, voting as a separate class, is entitled to elect four of the members of the Company’s board of directors, while the Class B common stock, voting as a separate class, is entitled to elect the remaining nine members of the Company’s board of directors. When the Class A common stock and Class B common stock vote together as a single class, each share of Class A common stock is entitled to one vote per share and each share of Class B common stock is entitled to ten votes per share. Class B common stock is convertible into Class A common stock on a share-for-share basis at the option of the holder.
	On April 16, 2013, the Company entered into separate, privately negotiated exchange agreements with certain holders of its Puttable Equity-Linked Senior Notes due 2014 (“2014 Senior Notes”) to exchange such notes for Class A common stock. The noteholders exchanged $138,853,000 in aggregate principal amount of 2014 Senior Notes for a total of 9,549,721 shares of Class A common stock and a cash payment of $4,860,000 for additional exchange consideration, accrued interest and in lieu of fractional shares.
	On May 31, 2013, pursuant to the terms of the Indenture governing the 2014 Senior Notes, the Company issued a put termination notice to the noteholders. Pursuant to the Indenture, following the put termination notice, holders of the 2014 Senior Notes were permitted to put such notes to the Company through June 20, 2013. As of July 12, 2013, the last settlement date for noteholders to put the 2014 Senior Notes to the Company, $60,033,000 aggregate principal amount of the 2014 Senior Notes were put, for which noteholders received 4,128,806 shares of Class A common stock and cash payments totaling $1,088,000 for interest payable to October 15, 2013 and in lieu of fractional shares.
	In addition, during the year ended January 31, 2013, the Company issued 13,852,435 shares of Class A common stock pursuant to separate privately negotiated exchange transactions for Series A preferred stock as described below.
	Preferred Stock
	The Company is authorized to issue shares of preferred stock. Series A Cumulative Perpetual Convertible Preferred Stock (“Series A preferred stock”), if issued, ranks junior to all of the Company’s existing and future debt obligations, including convertible or exchangeable debt securities; senior to the Company’s Class A common stock and Class B common stock and any future equity securities that by their terms rank junior to the Series A preferred stock with respect to distribution rights or payments upon the Company’s liquidation, winding-up or dissolution; equal with future series of preferred stock or other equity securities that by their terms are on a parity with the Series A preferred stock; and junior to any future equity securities that by their terms rank senior to the Series A preferred stock.
	Holders were able to convert the Series A preferred stock, at their option, into shares of Class A common stock at any time. Upon conversion, the holder would receive approximately 3.3 shares of Class A common stock per $50 liquidation preference of Series A preferred stock, based on an initial conversion price of $15.12 per share of Class A common stock, subject to adjustment. The Company was able to elect to mandatorily convert some or all of the Series A preferred stock if the Daily Volume Weighted Average Price of its Class A common stock equaled or exceeded 150% of the initial conversion price then in effect for at least 20 out of 30 consecutive trading days. If the Company elected to mandatorily convert some or all of the Series A preferred stock, the Company was required to make a dividend make-whole payment on the Series A preferred stock equal to the total value of the aggregate amount of dividends that would have accrued and become payable from March 2010 to March 2013, less any dividends already paid on the Series A preferred stock.
	On October 16, 2012 and December 13, 2012, the Company entered into separate, privately negotiated exchange agreements with certain holders of its Series A Preferred Stock to exchange such stock for shares of the Company’s Class A common stock. Under the terms of the agreements, holders exchanged $209,447,600 in aggregate amount of liquidation preference consisting of 4,188,952 shares of Series A preferred stock, for 13,852,435 shares of the Company’s Class A common stock. The amount of common shares issued was equivalent to the initial conversion price of $15.12 per share of Class A common stock. The Company made aggregate cash payments of $19,069,000 to the holders for additional exchange consideration, including dividends that would have been payable on December 17, 2012 and March 15, 2013. Under the accounting guidance for induced conversion of convertible preferred stock, the cash inducement payments were recorded as a reduction to retained earnings.
	From January 31, 2013 to March 14, 2013, 109,768 shares of Series A preferred stock were converted by holders into 362,990 shares of Class A common stock in accordance with the original terms of the Series A preferred stock. On March 15, 2013, the Company redeemed the remaining 101,270 shares of Series A preferred stock for approximately $5,100,000, the aggregate amount of liquidation preference plus the dividend that was due and payable on March 15, 2013.
	On March 13, 2013, the Company settled an equity call hedge transaction that was entered into in connection with the original issuance of the Series A preferred stock. As a result, the Company received 765,134 shares of Class A common stock valued at $16.82 per share for a total of $12,868,000 and cash payments of $10,231,000. In accordance with accounting guidance on equity hedge transactions, amounts received upon settlement of equity call hedge transactions in which the Company had the choice of net share settlement or net cash settlement are reflected as an increase to additional paid-in capital.
	The Company declared and paid Series A preferred stock dividends of $0, $185,000 and $13,060,000 during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively.

Class_A_Common_Units_and_Relat

Class A Common Units and Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Class A Common Units and Related Party Transactions	Class A Common Units and Related Party Transactions
	Master Contribution Agreement
	The Company and certain of its affiliates entered into a Master Contribution and Sale Agreement (the “Master Contribution Agreement”) with Bruce C. Ratner (“Mr. Ratner”), Executive Vice President and Director, and certain entities and individuals affiliated with Mr. Ratner (the “BCR Entities”) in August 2006 to purchase their interests in a total of 30 retail, office and residential operating properties and service companies in the Greater New York City metropolitan area. The Company issued Class A Common Units (“Units”) in a jointly-owned, limited liability company in exchange for their interests. The Units may be exchanged for one of the following forms of consideration at the Company’s sole discretion: (i) an equal number of shares of the Company’s Class A common stock or, (ii) cash based on a formula using the average closing price of the Class A common stock at the time of conversion or, (iii) a combination of cash and shares of the Company’s Class A common stock. The Company has no rights to redeem or repurchase the Units. Pursuant to the Master Contribution Agreement, certain projects under development would remain owned jointly until each project was completed and achieved “stabilization.” Upon stabilization, each project would be valued and the Company, in its discretion, would choose among various ownership options for the project.
	As described below, the Company and Mr. Ratner have agreed upon the value of five of the development projects that have reached stabilization. As of December 31, 2014, Westchester’s Ridge Hill, a regional mall in Yonkers, New York, and air rights for any future residential vertical development at East River Plaza, a specialty retail center in Manhattan, New York, remain subject to this agreement. The development projects were not covered by the Tax Protection Agreement (the “Tax Protection Agreement”) that the parties entered into in connection with the Master Contribution Agreement. The Tax Protection Agreement indemnified the BCR Entities included in the initial closing against taxes payable by reason of any subsequent sale of certain operating properties.
	As a result of the March 2014 disposal of Quartermaster Plaza, a specialty retail center in Philadelphia, Pennsylvania, the Company accrued $1,646,000 during the year ended December 31, 2014 related to a tax indemnity payment due to the BCR Entities, of which $1,235,000 was paid as of December 31, 2014. The Company made no payments to the BCR Entities for tax indemnification during the 11 months ended December 31, 2013 and the year ended January 31, 2013.
	In June 2014, one of the BCR Entities exchanged 673,565 of the Units. The Company issued 673,565 shares of its Class A common stock for the exchanged Units. The Company accounted for the exchange as a purchase of noncontrolling interests, resulting in a reduction of noncontrolling interests of $34,358,000, an increase to Class A common stock of $224,000 and a combined increase to additional paid-in capital of $34,134,000, accounting for the fair value of common stock issued and the difference between the fair value of consideration exchanged and the noncontrolling interest balance. At December 31, 2014 and 2013, 2,973,190 and 3,646,755 Units, respectively, were outstanding. The carrying value of the Units of $151,663,000 and $186,021,000 is included as noncontrolling interests at December 31, 2014 and 2013.
	8 Spruce Street, DKLB BKLN and East River Plaza
	Pursuant to the terms of the Master Contribution Agreement, in January 2014, the Company caused certain of its affiliates to acquire the BCR Entities’ interests in three stabilized projects, 8 Spruce Street, an apartment community in Manhattan, New York, DKLB BKLN, an apartment community in Brooklyn, New York, and East River Plaza, for $14,286,000. Prior to the transaction, the Company accounted for the three projects using the equity method of accounting and subsequently accounts for the projects as equity method investments as the other outside partners continue to have joint control.
	New York Times and Twelve MetroTech Center
	Pursuant to the terms of the Master Contribution Agreement, in May 2008, the Company caused certain of its affiliates to acquire the BCR Entities’ interests in two stabilized projects, New York Times, an office building in Manhattan, New York, and Twelve MetroTech Center, an office building in Brooklyn, New York. In accordance with the purchase agreements, the applicable BCR Entities assigned and transferred their interests in the two projects to affiliates of the Company and will receive approximately $121,000,000 over a 15 year period. An affiliate of the Company had also agreed to indemnify the applicable BCR Entity against taxes payable by it by reason of a subsequent sale or other disposition of one of the projects. This agreement expired on December 31, 2014.
	The consideration exchanged by the Company for the BCR Entities’ interest in the two development projects has been accounted for under the purchase method of accounting. Pursuant to the agreements, the BCR Entities received an initial cash amount of $49,249,000. The Company calculated the net present value of the remaining payments over the 15 year period using a discounted interest rate. This initial discounted amount of $56,495,000 was recorded and will be accreted up to the total liability through interest expense over the 15 year period using the effective interest method. At December 31, 2014 and 2013, $3,330,000 and $13,013,000, respectively, is recorded in accounts payable, accrued expenses and other liabilities related to this obligation.
	Development Fee
	During the year ended December 31, 2014, in accordance with the Master Contribution Agreement, the Company accrued an $11,000,000 development fee payable to Mr. Ratner related to Westchester’s Ridge Hill, as certain milestones had been reached in the development and operation of the property.

Leases

Leases	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Leases	Leases
	The following tables include all lease obligations of the Company.
	The Company as Lessor
	The following table summarizes the minimum future rental income to be received on non-cancelable operating leases of commercial properties that generally extend for periods of more than one year:
	Years Ending December 31,
		(in thousands)
	2015	$	393,356
	2016	368,671
	2017	346,959
	2018	319,628
	2019	270,114
	Later years	1,367,021
		$	3,065,749
	The Company as Lessee
	The Company is a lessee under various operating leasing arrangements for real property and equipment. The most significant of these involve ground leases which expire between the years 2018 and 2100, excluding optional renewal periods. The Company is subject to participation payments under certain of its ground leases, the most significant of which are in New York City. These payments are triggered by defined events within the respective lease agreements and the timing and future amounts are not determinable by the Company.
	Minimum fixed rental payments under long-term leases (over one year) in effect at December 31, 2014 are as follows:
	Years Ending December 31,
		(in thousands)
	2015	$	11,632
	2016	10,899
	2017	5,963
	2018	5,637
	2019	5,566
	Later years	142,259
		$	181,956
	The following table summarizes rent expense (in thousands):
	Year Ended December 31, 2014	$	11,013
	11 Months Ended December 31, 2013	$	8,243
	Year Ended January 31, 2013	$	9,136

Commercial_Group_Land_Sales

Commercial Group Land Sales	12 Months Ended
	Dec. 31, 2014
Real Estate [Abstract]
Commercial Group Land Sales	Commercial Group Land Sales
	In January 2011, the Company sold an approximate 10 acre land parcel and air rights to Rock Ohio Caesars Cleveland, LLC for development of a casino in downtown Cleveland for a sales price of $40,000,000. As of January 31, 2012, the Company had received total cash deposits of $7,000,000 of the purchase price. The minimum initial investment still had not been met and accordingly, the cash deposits were recorded as a deposit liability under the deposit method and included in accounts payable, accrued expenses and other liabilities at January 31, 2012.
	During the three months ended April 30, 2012, the Company received the remaining cash proceeds of $33,000,000. With receipt of this payment, the buyer’s initial and continuing investment on the sale of the parcel was adequate for gain recognition under the full accrual method. As such, the entire sales price is included in revenues and the related cost of land is included in operating expenses, resulting in a gain on sale of $36,484,000 during the year ended January 31, 2013.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation
	The Company’s 1994 Stock Plan (the “Plan”) permits the award of Class A stock options, restricted shares, performance shares and other equity awards to key employees and nonemployee directors of the Company. The aggregate maximum number of shares that may be issued under the Plan is 21,750,000 for all types of awards.
	As of December 31, 2014, the total number of shares available for granting of all types of awards was 6,217,581. The maximum annual award to an individual is 500,000 of the aggregate stock options and 500,000 of the aggregate restricted shares and performance shares. In addition, the aggregate grant-date fair value of awards granted to a nonemployee director during any calendar year shall not exceed $250,000. Stock options have a maximum term of 10 years and are awarded with an exercise price at least equal to the market value of the stock on the date of grant. Class A common stock issued upon the exercise of stock options may be issued out of authorized and unissued shares or treasury stock. The Plan, which is administered by the Compensation Committee of the Board of Directors, does not allow the reduction of option prices without shareholder approval, except for the anti-dilution adjustments. The Company has not amended the terms of any previously issued equity award. All outstanding stock options have an exercise price equal to the fair market value of the underlying stock at the date of grant, a 10-year term, and graded vesting over three to four years. All outstanding restricted shares have graded vesting over three to four years. The Plan was amended in December 2013 to permit 1-year cliff vesting of awards granted to nonemployee directors beginning in 2014.
	Stock-based compensation costs and related deferred income tax benefit recognized in the financial statements are as follows:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Stock option costs	$	3,381		$	3,051		$	3,101
	Restricted stock costs	12,279			10,672			10,324
	Performance share costs	4,013			2,474			1,326
	Total stock-based compensation costs	19,673			16,197			14,751
	Less amount capitalized into qualifying real estate projects	(5,944		)	(5,826		)	(5,396		)
	Amount charged to operating expenses	13,729			10,371			9,355
	Depreciation expense on capitalized stock-based compensation	800			876			827
	Total stock-based compensation expense	$	14,529		$	11,247		$	10,182
	Deferred income tax benefit	$	5,426		$	4,111		$	3,671
	Stock-based compensation expensed at the date of grant for awards granted to retirement-eligible grantees during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013 was $1,358,000, $973,000 and $726,000, respectively.
	Stock Options
	The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used for options granted during the respective years:
		Year Ended		11 Months Ended		Year Ended
		December 31, 2014		December 31, 2013		January 31, 2013
	Risk-free interest rate	1.91	%	0.78	%	1.1	%
	Expected volatility	71.5	%	74.1	%	74.1	%
	Expected dividend yield	0	%	0	%	0	%
	Expected term (in years)	5.5		5.5		5.5
	The risk-free interest rate was based on published yields of U.S. zero coupon bonds having a maturity date approximating the expected term of the options. Expected volatility was based on the historical volatility of the Company’s stock using the daily closing prices of the Company’s Class A common stock over a period of time equivalent to the expected term of the options. The expected dividend yield was based on the Company’s recent annual dividend divided by the average price of the Company’s Class A common stock during that period. Historical plan experience was used to estimate the expected term of options granted.
	The following table provides a summary of stock option activity for the year ended December 31, 2014:
		Shares		Weighted			Weighted	Intrinsic
				Average			Average	Value
				Exercise Price			Remaining	(in thousands)
							Contractual
							Term
							(in months)
	Outstanding at January 1, 2014	4,082,065		$	34.98
	Granted	233,914		$	18.73
	Exercised	(62,175	)	$	12.7
	Forfeited/expired	(126,869	)	$	45.74
	Outstanding at December 31, 2014	4,126,935		$	34.07		45	$	9,575
	Options exercisable (fully vested) at December 31, 2014	3,275,479		$	38.42		32	$	6,176
	The weighted average grant-date fair value of stock options granted during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013 was $11.60, $10.97 and $9.24, respectively. The total intrinsic value of stock options exercised during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013 was $439,000, $145,000 and $954,000, respectively. Cash received from stock options exercised during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013 was $789,000, $1,153,000 and $8,368,000, respectively. There was no income tax benefit realized as a reduction of income taxes payable from stock options exercised during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013. At December 31, 2014, there was $2,874,000 of unrecognized compensation cost related to stock options expected to be recognized over a weighted-average period of 28 months.
	Restricted Stock
	The following table provides a summary of restricted stock activity for the year ended December 31, 2014:
		Shares		Weighted
				Average
				Grant-Date
				Fair Value
	Unvested shares at January 1, 2014	2,159,267		$	16.41
	Granted	605,160		$	18.74
	Vested	(721,886	)	$	16.13
	Forfeited	(32,081	)	$	17.44
	Unvested shares at December 31, 2014	2,010,460		$	17.2
	Restricted stock represents a grant of Class A common stock to key employees and nonemployee directors subject to restrictions on disposition, transferability and risk of forfeiture, while having the rights to vote the shares and receive dividends. Restricted shares subject to the restrictions mentioned above are considered to be nonvested shares under the accounting guidance for share-based payment and are not reflected as issued and outstanding shares until the restrictions lapse. At that time, the shares are released to the grantee and the Company records the issuance of the shares. At December 31, 2014, all unvested shares of restricted stock were excluded from issued and outstanding shares of Class A common stock in the accompanying consolidated financial statements.
	The weighted average grant-date fair value of restricted stock granted during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013 was $18.74, $17.60 and $14.75, respectively. The total fair value of shares that vested during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013 was $11,647,000, $7,770,000 and $9,156,000, respectively. At December 31, 2014, there was $16,573,000 of unrecognized compensation cost related to restricted stock expected to be recognized over a weighted-average period of 29 months.
	In connection with the vesting of restricted stock during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, the Company repurchased into treasury 215,632 shares, 179,907 shares and 129,568 shares, respectively, of Class A common stock to satisfy the employees’ related minimum statutory tax withholding requirements. These shares were placed in treasury with an aggregate cost basis of $4,009,000, $3,167,000 and $1,963,000, respectively.
	Performance Shares
	Performance shares may be granted to selected executives and the vesting of the shares is contingent upon meeting management objectives established by the Compensation Committee of the Board of Directors. The management objectives may be company-wide or business unit performance goals and may include market conditions and service requirements. The performance period may not be less than one year. Performance shares will generally be granted at target levels and the ultimate number of shares earned will depend upon the degree performance goals are met at the end of the performance period. The fair value of performance shares that do not have a market condition are based on the closing price of the underlying stock on the date of grant and recorded as stock-based compensation cost over the requisite service period. If the performance goals are not met or below target, then any related recognized compensation costs will be reversed. If the performance goals are exceeded, additional compensation costs will be recorded, as applicable, up to the maximum specified in the grant. The fair value of performance shares that have a market condition is based on a Monte Carlo simulation and is recorded as stock-based compensation cost over the requisite service period. The cost is recognized even if the market condition is not satisfied, provided the service requirement is met.
	The weighted average grant-date fair value of performance shares granted during the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013 was $18.23, $17.78 and $20.74, respectively. All grants have performance goals that include a market condition and the fair values were computed using a Monte Carlo simulation. At December 31, 2014, there was $8,610,000 of unrecognized compensation costs related to performance shares expected to be recognized over a weighted-average period of 27 months.
	The following table provides a summary of the performance share activity for the year ended December 31, 2014:
		Shares		Weighted
				Average
				Grant-Date
				Fair Value
	Unvested shares at January 1, 2014	587,210		$	19.23
	Granted	309,750		$	18.23
Vested	—		$	—
Forfeited	(25,634	)	$	19.04
Unvested shares at December 31, 2014	871,326		$	18.88
The range of performance shares that can be earned as of December 31, 2014 is as follows:
Performance Period	Range	Minimum Shares		Target		Maximum Shares
				Shares
February 1, 2012 to December 31, 2015	0% to 200%	—		278,084		556,168
February 1, 2013 to December 31, 2016	0% to 200%	—		291,561		583,122
January 1, 2014 to December 31, 2017	0% to 200%	—		301,681		603,362
		—		871,326		1,742,652

WriteOff_of_Abandoned_Developm

Write-Off of Abandoned Development Projects and Demolition Costs Write-Off of Abandoned Development Projects and Demolition Costs	12 Months Ended
	Dec. 31, 2014
Write-off of Abandoned Development Projects and Demolition Costs [Abstract]
Write-Off of Abandoned Development Projects and Demolition Costs [Text Block]	Write-Offs of Abandoned Development Projects and Demolition Costs
	The Company recorded write-offs of abandoned development projects and demolition costs of $1,655,000, $40,414,000 and $26,850,000 for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively. Non-capitalizable demolition costs of $1,372,000, $8,200,000 and $0 for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively, are included in write-offs of abandoned development projects and demolition costs.

Impairment_of_Real_Estate_and_

Impairment of Real Estate and Impairment of Unconsolidated Entities	12 Months Ended
	Dec. 31, 2014
Impairment of Real Estate and Impairment of Unconsolidated Entities [Abstract]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Text Block]	Impairment of Real Estate and Impairment of Unconsolidated Entities
	Impairment of Real Estate
	The impairments recorded during the periods presented represent write-downs to estimated fair value due to a change in events, such as a change in strategy for certain assets, bona fide third-party purchase offers or changes in certain assumptions, including estimated holding periods and current market conditions and the impact of these assumptions to the properties’ estimated future cash flows. The assumptions used to estimate fair value are Level 2 or 3 inputs.
	The following table summarizes the Company’s impairment of real estate included in continuing operations:
			Year Ended			11 Months Ended		Year Ended
			December 31, 2014			December 31, 2013		January 31, 2013
			(in thousands)
	B2 BKLYN	Brooklyn, New York	$	146,300		$	—	$	—
	Avenue at Tower City Center (Specialty Retail Center)	Cleveland, Ohio	72,473			—		—
	Office Buildings:
	Terminal Tower	Cleveland, Ohio	42,208			—		—
	Post Office Plaza	Cleveland, Ohio	14,378			—		—
	Building J at Illinois Science and Technology Park	Skokie, Illinois	—			17,474		—
	Halle Building	Cleveland, Ohio	—			—		30,200
	Pacific Park Brooklyn	Brooklyn, New York	—			289,864		—
	LiveWork Las Vegas	Las Vegas, Nevada	—			112,838		—
	Other		1,736			1,185		460
			$	277,095		$	421,361	$	30,660
	B2 BKYLN is being built using modular construction, whereby the modular units are fabricated and assembled at a nearby factory originally owned fifty-fifty between the Company and Skanska USA (the “Construction Manager”). The Construction Manager was hired under a fixed-price contract. During the three months ended September 30, 2014, the Construction Manager ceased construction and on September 23, 2014, purported to terminate the construction contract. The Company and the Construction Manager have each filed lawsuits relating primarily to the project’s delays and associated additional completion costs. During the three months ended December 31, 2014, the Company completed its evaluation of various scenarios to complete B2 BKLYN and in November 2014, terminated the construction contract for cause and purchased the Construction Manager’s entire 50% ownership interest in the factory used to construct the modular units. In December 2014, the Company engaged a new construction manager to oversee the construction of B2 BKLYN and began preparations to recommence construction of modular units. Based on current information available, including the Company’s decision to complete B2 BKLYN using modular units and to purchase the modular factory, the Company updated its impairment calculation. As a result, the Company’s estimated undiscounted cash flows no longer exceed the carrying value of the asset, requiring the Company to adjust the carrying value to its estimated fair value as of December 31, 2014. As such, the Company recorded an impairment charge of $146,300,000 during the year ended December 31, 2014.
	The Company continues to execute its strategy of focusing on core products located in core markets. In executing this strategy, the Company began serious negotiations for the sale of several operating assets in Cleveland, Ohio during the three months ended June 30, 2014. At June 30, 2014, discussions with a potential purchaser were at various stages for each of the assets and remained subject to further negotiation and applicable due diligence periods. Based on the advanced status of the discussions, the Company reviewed and adjusted the estimated holding periods of each applicable asset and in each case increased the likelihood of a near term sale. As a result, the estimated probability weighted undiscounted cash flows no longer exceed the carrying value of certain assets, requiring the Company to adjust the carrying value of those assets as described in the above table, to their estimated fair value. During the three months ended September 30, 2014, the negotiations with the potential buyer ceased, as mutually agreeable terms could not be reached.
	In December 2013, the Company signed an agreement with Greenland to form a joint venture to develop Pacific Park Brooklyn (formerly Brooklyn Atlantic Yards), a 22 acre mixed-use project in Brooklyn, New York (see Note S – Net Loss on Disposition of Partial Interest in Development Project for a discussion of the joint venture, which closed on June 30, 2014). Upon signing of the agreement, the Company determined it was likely the sale transaction would close. As a result, the Company classified the assets and liabilities as held for sale on its consolidated balance sheet as of December 31, 2013 and recorded the asset at estimated fair value less costs to sell, resulting in an impairment charge of $289,864,000 ($242,417,000, net of noncontrolling interest) during the 11 months ended December 31, 2013.
	During 2013, the Company made a strategic business decision to reduce the expected level of development at LiveWork Las Vegas, a mixed-use project on a 13.5 acre parcel in Las Vegas, Nevada and consider ways to maximize the near-term value of the investment, which may include build to suit development, equity joint venture or marketing a portion of the land parcels to third parties. The change in strategy reduced the estimated hold period and expected cash flows. As a result, the Company’s estimated undiscounted cash flows no longer exceed the carrying value of the asset, requiring the Company to adjust the carrying value to its estimated fair value. As such, the Company recorded an impairment charge of $112,838,000 during the 11 months ended December 31, 2013.
	During 2013, the Company made a strategic business decision to modify its redevelopment plan for Building J at Illinois Science and Technology Park. The building, currently vacant, would require a significant amount of capital in order to re-tenant and continue to hold on a long term basis. The Company has determined it is no longer willing to invest any additional capital in this building without a tenant for a substantial portion of the building or without some form of significant financial subsidy. As a result, the Company’s estimated undiscounted cash flows no longer exceed the carrying value of the asset, requiring the Company to adjust the carrying value to its estimated fair value. As such, the Company recorded an impairment charge of $17,474,000 during the 11 months ended December 31, 2013.
	During 2012, preliminary negotiations with a potential tenant to lease a majority of the Halle Building were discontinued since the Company was unwilling to invest the significant amount of capital necessary to execute the proposed lease. As a result, the Company began evaluating several long-term strategies for the building, as it had below average occupancy, had continued to lose tenants in 2012 and required significant capital investment. The strategies considered included a near-term disposition of the asset in its current state, investing significant capital to re-tenant the space and hold on a long term basis, or invest additional capital to position the asset for sale, which may have increased the sales price. The Company determined it is not likely to invest any significant additional capital and would pursue the repositioning of the asset for redevelopment through a joint venture or exploration of an outright sale. The change in strategy reduced the long-term hold probability and the Company’s estimated probability weighted undiscounted cash flows no longer exceed the carrying value of the asset requiring the Company to adjust the carrying value to its estimated fair value. As such, the Company recorded an impairment charge of $30,200,000 during the year ended January 31, 2013. During the year ended December 31, 2014, the Company sold the Halle Building (see Note T – Net Gain on Disposition of Full or Partial Interest in Rental Properties for additional information).
	Impairment of Real Estate - Discontinued Operations
	These impairments recorded during the periods presented represent write downs to estimated fair value due to changes in events, related to a bona fide third-party purchase offer and consideration of current market conditions and the impact of these events to the properties’ estimated future cash flows. The following table summarizes the Company’s impairment of real estate included in discontinued operations:
			Year Ended			11 Months Ended		Year Ended
			December 31, 2014			December 31, 2013		January 31, 2013
			(in thousands)
	Regional Malls:
	Promenade Bolingbrook	Bolingbrook, Illinois	$	—		$	54,194	$	—
	Orchard Town Center	Westminster, Colorado	—			15,649		—
	Investment in triple net lease retail property	Kansas City, Missouri	—			6,870		—
	Investment in triple net lease retail property	Portage, Michigan	—			—		2,263
	White Oak Village (Specialty Retail Center)	Richmond, Virginia	—			—		1,566
	Other		—			—		425
			$	—		$	76,713	$	4,254
	During 2013, the Company continued to make progress on the marketing of Promenade Bolingbrook. At December 31, 2013, discussions with a potential purchaser were ongoing and remained subject to further negotiation and applicable due diligence periods. However, based on the status of the discussions, the possibility of a sale of the asset increased and was reasonably possible. As a result, the Company reviewed and updated the impairment analysis. The estimated probability weighted undiscounted cash flows no longer exceed the carrying value of the asset requiring the Company to adjust the carrying value to its estimated fair value. As such, the Company recorded an impairment charge of $54,194,000 during the 11 months ended December 31, 2013.
	Impairment of Real Estate (including Discontinued Operations) - Fair Value Information
	The following table presents quantitative information about the significant unobservable inputs used to determine the fair value of the impairment of real estate for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013:
		Quantitative Information about Level 3 Fair Value Measurements
		Fair Value			Valuation Technique	Unobservable Input	Range of Input Values
		(in thousands)
	December 31, 2014
	Impairment of real estate	$	84,738		Discounted cash flows	Market capitalization rate	4.5% - 10.0% (1)
						Discount rate	6.0% - 12.0% (1)
	Impairment of real estate	38,750			Indicative bids	Indicative bids	N/A (2)
	December 31, 2013
	Impairment of real estate	$	734,240		Indicative bids	Indicative bids	N/A (2)
	Impairment of real estate	$	29,500		Comparable property market analysis	Price per square foot	$22 to $55 per square foot (3)
	January 31, 2013
	Impairment of real estate	$	83,193		Indicative bids	Indicative bids	N/A (2)
	Impairment of real estate	10,500			Discounted cash flows	Discount rate	10.00%
	-1	Weighted average market capitalization and discount rates are 6.7% and 8.6%, respectively.
	-2	These fair value measurements were derived from bona fide purchase offers from third party prospective buyers, subject to the Company’s corroboration for reasonableness.
	-3	Weighted average price is $45 per square foot.
	Impairment of Unconsolidated Entities
	The Company recorded $3,124,000 and $390,000 of impairments of unconsolidated entities during the years ended December 31, 2014 and January 31, 2013, respectively. There were no impairments of unconsolidated entities recorded during the 11 months ended December 31, 2013.

Net_Gain_Loss_on_Land_Held_for

Net Gain (Loss) on Land Held for Divestiture Activity	12 Months Ended
	Dec. 31, 2014
Land Held for Divestiture disclosures [Abstract]
Net Gain (Loss) on Land Held for Divestiture Activity	Net Gain (Loss) on Land Held for Divestiture Activity
	On January 31, 2012, the Board of Directors approved the decision to reposition portions of the Land Development Group and focus on core rental properties in core markets. As of January 31, 2012, the Company planned to retain its land investments in only two land development projects: its consolidated Stapleton project in Denver, Colorado and its Central Station project in downtown Chicago, Illinois, which was accounted for under the equity method of accounting.
	The Company disposed of the land held for divestiture through December 31, 2013 and recorded the activity for consolidated land projects and those accounted for on the equity method of accounting on separate financial statement line items in the Consolidated Statements of Operations.
	The following table summarizes the net gain (loss) on land held for divestiture activity of consolidated entities:
		Year Ended		11 Months Ended			Year Ended
		December 31, 2014		December 31, 2013			January 31, 2013
		(in thousands)
	Sales of land held for divestiture	$	—	$	1,941		$	74,150
	Cost of sales of land held for divestiture	—		(323		)	(56,247		)
	Gain on extinguishment of debt of land held for divestiture	—		—			4,373
	Net gain on closed transactions of land held for divestiture	—		1,618			22,276
	Bad debt expense	—		(9,000		)	—
	Impairment of land held for divestiture	—		—			(15,796		)
	Net gain (loss) on land held for divestiture activity	$	—	$	(7,382	)	$	6,480
	During the year ended January 31, 2013, the Company executed upon its strategy relating to the land divestiture effort, resulting in the disposition of the majority of land held for divestiture. These activities primarily represent sales of bulk land projects, the associated cost of sales, gain on extinguishment of debt and impairment of land held for divestiture. Through the competitive bid process and the negotiation process of moving from informal expressions of interest to bona fide purchase offers, the Company obtained additional information regarding the value of its specific projects as viewed by current market participants. Based on the various levels of interest from potential buyers and information obtained from preliminary sales contracts, letters of intent and other negotiations on the remaining land projects, the Company reviewed its assumptions used to estimate the fair value of the land held for divestiture. As a result, the Company recorded an impairment charge of $15,796,000 during the year ended January 31, 2013.
	The Company had a note receivable (the “Note”) collateralized by a 1,000 acre land parcel in North Carolina that was in default at July 31, 2013. Negotiations were ongoing to cure the default; however, the Company had no assurance the payee had the intent to pay the Note in full. Accordingly, the Company established a reserve on the Note to reflect the estimated fair value of the underlying collateral of approximately $4,100,000. As a result, bad debt expense of $9,000,000 ($8,300,000, net of noncontrolling interest and $4,980,000, after tax) was recorded during the 11 months ended December 31, 2013. On December 31, 2013, the Company received the underlying collateral in a deed in lieu transaction in full satisfaction of the Note.
	The following table presents quantitative information about the significant unobservable inputs used to determine the fair value of impairment of consolidated land held for divestiture for the year ended January 31, 2013:
		Quantitative Information about Level 3 Fair Value Measurements
		Fair Value January 31, 2013		Valuation Technique	Unobservable Input	Input Values
		(in thousands)
	Impairment of land held for divestiture	$	15,663	Indicative bids	Indicative bids	N/A (1)
	Impairment of land held for divestiture	$	926	Discounted cash flows(2)	N/A	N/A
	-1	These fair value measurements were developed by third party sources, subject to the Company’s corroboration for reasonableness.
	-2	The Company used a discounted cash flow technique to estimate fair value, however, due to the estimated holding period being less than 12 months, the impact of discounting was deemed immaterial.
	The following table summarizes the net gain (loss) on land held for divestiture activity of unconsolidated entities:
		Year Ended		11 Months Ended			Year Ended
		December 31, 2014		December 31, 2013			January 31, 2013
		(in thousands)
	Net gain (loss) on sales of land held for divestiture of unconsolidated entities	$	—	$	1,338		$	(371	)
	Impairment of investments in unconsolidated entities	—		—			(40,406		)
	Net gain (loss) on land held for divestiture activity of unconsolidated entities	$	—	$	1,338		$	(40,777	)
	During 2012, the Company received an unsolicited offer to purchase its ownership interest in the remaining land parcels at Central Station. The Company evaluated the offer and made a decision to divest its equity method investment in Central Station as part of its formal land divestiture activities. Based on the terms of the letter of intent, the Company recorded an impairment charge of approximately $17,000,000, which is included in impairment of investments in unconsolidated entities during the year ended January 31, 2013. The divestiture of Central Station closed during the three months ended January 31, 2013 and had a $29,525,000 sale price.
	During 2012, the Company continued to market its equity method ownership interest in Mesa del Sol, a 3,000 acre land project in Albuquerque, New Mexico, to several potential buyers. At the time, Mesa del Sol was not expected to generate positive cash flow in the near-term due to the expected level of development expenditures needed to prepare the first phase of lots for sale. During the extensive marketing activities, there were few buyers that expressed interest in taking on the long-term development risk, and those that were expected larger returns than previously estimated. As a result, based on these negotiations and other market information obtained from these potential buyers and other industry data, the Company updated its assumptions used in estimating the fair value of the investment, including discount rates, absorption rates and commercial and residential land pricing. Based on the updated valuation model, the Company recorded an impairment charge of approximately $15,000,000, which is included in impairment of investments in unconsolidated entities during the year ended January 31, 2013.

Net_Loss_on_Disposition_of_Par

Net Loss on Disposition of Partial Interest in Development Project Net Loss on Disposition of Partial Interest in Development Project	12 Months Ended
	Dec. 31, 2014
Net Loss on Disposition of Partial Interest in Development Project [Abstract]
Net Loss on Disposition of Partial Interest in Development Project	Net Loss on Disposition of Partial Interest in Development Project
	On June 30, 2014, the Company entered into a joint venture with Greenland to develop Pacific Park Brooklyn. The joint venture will develop the entire project, including the infrastructure and vertical construction of the residential units, excluding Barclays Center arena and the under-construction B2 BKLYN apartment community. Under the joint venture, Greenland acquired 70% of the entire project and will co-develop the entire project with the Company, along with sharing in the entire project costs going forward in proportion to ownership interests. For its 70% equity interest, Greenland invested cash and assumed 70% of the nonrecourse mortgage debt on the project. As of December 31, 2014, the Company had received $208,275,000 of cash, net of transaction costs, related to the disposition. The transaction resulted in a net loss on disposition of partial interest in development project of $20,298,000 ($16,919,000, net of noncontrolling interests) during the year ended December 31, 2014. The loss was primarily due to estimated costs required to complete the Company’s obligations prior to closing were higher than those originally estimated. The original estimate as of December 31, 2013 was based on the most current available information (see Note Q – Impairment of Real Estate and Impairment of Unconsolidated Entities for a discussion of the impairment recognized on Pacific Park Brooklyn during the 11 months ended December 31, 2013). Upon closing, the Company determined it was not the primary beneficiary of the joint venture. As a result, the Company deconsolidated the Pacific Park Brooklyn development project and accounts for the joint venture on the equity method of accounting.

Net_Gain_on_Disposition_of_Ful

Net Gain on Disposition of Full or Partial Interest in Rental Properties	12 Months Ended
	Dec. 31, 2014
Net Gain (Loss) on Disposition of Full or Partial Interest in Rental Properties [Abstract]
Net Gain on Disposition of Full or Partial Interests in Rental Properties	Net Gain on Disposition of Full or Partial Interest in Rental Properties
	The net gain (loss) on disposition of full or partial interest in rental properties is comprised of the following:
			Year Ended			11 Months Ended		Year Ended
			December 31, 2014			December 31, 2013		January 31, 2013
			(in thousands)
	Forest Trace (Supported Living Apartments)	Lauderhill, Florida	$	23,013		$	—	$	—
	Office Buildings:
	Halle Building	Cleveland, Ohio	7,881			—		—
	Stapleton - 3055 Roslyn	Denver, Colorado	(146		)	—		—
	QIC Joint Venture		(467		)	381,627		—
	New York Retail Joint Venture		—			114,465		—
			$	30,281		$	496,092	$	—
	As discussed in Note A – Accounting Policies, the Company adopted new discontinued operations accounting guidance effective April 1, 2014. As a result, the sales of Forest Trace, Halle Building and Stapleton - 3055 Roslyn during the year ended December 31, 2014 did not qualify for discontinued operations. The gains (losses) on the sale of these properties is included in net gain on disposition of full or partial interest in rental properties for the year ended December 31, 2014. Prior to the adoption of the new accounting guidance, full disposals of consolidated real estate qualified for and were recorded as discontinued operations and, accordingly, were excluded from this financial statement line item.
	QIC Joint Venture
	During the 11 months ended December 31, 2013, the Company entered into joint venture agreements with outside partners, affiliated entities of QIC, one of the largest institutional investment managers in Australia. The outside partners invested in and received 49% of the Company’s equity interests in eight regional retail malls (seven fully consolidated assets in September 2013 and one equity method investment in December 2013).
	For its 49% equity interests, the outside partner invested cash and assumed debt of $477,100,000, representing 49% of the nonrecourse mortgage debt on the eight properties. As of December 31, 2013, the Company received approximately $421,700,000 of proceeds, net of transaction costs, of which approximately $187,700,000 represented cash, with the remainder being in the form of a loan. Based on the amount of cash received, the outside partner’s minimum initial investment requirement was met and the transaction qualified for full gain recognition. As such, the Company recognized a net gain on disposition of partial interest in rental properties of $381,627,000 related to the seven fully consolidated assets and a gain on disposition of partial interest in equity method investments of $27,080,000, which is included in equity in earnings during the 11 months ended December 31, 2013. The seven fully consolidated properties are adequately capitalized and do not contain the characteristics of a VIE. Based on this and the substantive participating rights held by the outside partner with regards to the properties, the Company concluded it appropriate to deconsolidate the seven fully consolidated entities and account for them under the equity method of accounting. During the 11 months ended December 31, 2013 and prior to admitting the outside party into the joint ventures, the Company acquired noncontrolling interests in two of the regional retail malls for approximately $92,400,000, which has been reflected in the Consolidated Statement of Equity.
	New York Retail Joint Venture
	In March 2011, the Company entered into joint venture agreements with an outside partner, an affiliated entity of Madison International Realty LLC. The outside partner invested in and received a 49% equity interest in 15 mature retail properties located in the Greater New York City metropolitan area.
	For its 49% equity interests, the outside partner invested cash and assumed debt of $244,952,000, representing 49% of the nonrecourse mortgage debt on the 15 properties. As of January 31, 2012, the Company received proceeds of $178,286,000, primarily in the form of a loan. Based on the net amount of cash received, the outside partner’s minimum initial investment requirement of 20% was not met. Since the transaction did not qualify for full gain recognition, the installment method of gain recognition was applied and a net gain on disposition of partial interest in rental properties of $9,561,000 was recorded during the year ended January 31, 2012. As of January 31, 2013, the remaining gain of $114,465,000 continued to be deferred and was included in accounts payable, accrued expenses and other liabilities.
	During the 11 months ended December 31, 2013, the Company used distribution proceeds from the joint ventures to pay down a portion of the loan, which increased the net cash received for purposes of measuring whether full gain recognition is appropriate. As a result, the outside partner’s investment requirement was met and the Company recognized the remaining deferred gain of $114,465,000 as net gain on disposition of partial interests in rental properties.

Net_Gain_on_Change_in_Control_

Net Gain on Change in Control of Interests Net Gain on Change in Control of Interests	12 Months Ended
	Dec. 31, 2014
Net Gain on Change in Control of Interests [Abstract]
Net Gain on Change in Control of Interests [Text Block]	Net Gain on Change in Control of Interests
	The net gain on change in control of interests is comprised of the following:
			Year Ended			11 Months Ended			Year Ended
			December 31, 2014			December 31, 2013			January 31, 2013
			(in thousands)
	Bayside Village (Apartment Community)	San Francisco, California	$	191,199		$	—		$	—
	Boulevard Mall (Regional Mall)	Amherst, New York	36,702			—			—
	Other		2,759			2,762			8,351
			$	230,660		$	2,762		$	8,351
	Bayside Village
	During the three months ended December 31, 2014, the Company and its existing partner which owns Bayside Village entered into an amendment to its partnership agreement whereby the rights to manage and control the day-to-day activities were transferred to the Company. The amendment was done to accommodate the request of the Company’s current partner, who was in the process of donating its entire ownership interest to an unrelated third party that would be a passive investor. Prior to this agreement, the Company owned 50% and had accounted for the property under the equity method of accounting, as the Company’s partner managed the operations of the property and there was joint control of the key decisions. The property is adequately capitalized and does not contain the characteristics of a VIE. Based on the lack of substantive participating rights held by the new outside partner, the Company concluded it appropriate to fully consolidate the entity. The Company remeasured its equity interest in the property, as required by the accounting guidance, at fair value (based upon the income approach using current rents and market discount rates) and recorded a net gain on change in control of interests of $191,199,000 during the year ended December 31, 2014. The consolidation resulted in increases to the Consolidated Balance Sheet of $436,700,000 to real estate, net, $44,300,000 to investments in and advances to unconsolidated entities, $5,300,000 to other assets, $126,900,000 to mortgage debt and notes payable, nonrecourse and $168,252,000 to noncontrolling interest.
	Boulevard Mall
	During the three months ended December 31, 2014, the Company acquired its partner’s 50% equity ownership interest in Boulevard Mall for $9,000,000. The purchase price, in the form of a note payable, is due no later than February 2017, was recorded at its estimated net present value. Prior to the acquisition, the Company owned 50% and had accounted for the property under the equity method of accounting. The Company now owns 100% of the property and has concluded it appropriate to consolidate the asset. As a result the Company remeasured its equity interest in the property, as required by the accounting guidance, at fair value (based upon the income approach using current rents and market discount rates) and recorded a net gain on change in control of interests of $36,702,000 during the year ended December 31, 2014. The consolidation resulted in increases to the Consolidated Balance Sheet of $106,300,000 to real estate, net, $26,200,000 to investments in and advances to unconsolidated entities, $17,000,000 to other assets and $100,800,000 to mortgage debt and notes payable, nonrecourse.
	Pro Forma Information
	The following unaudited supplemental pro forma operating data is presented for the year ended December 31, 2014 and the 11 months ended December 31, 2013, as if the gains on change in control related to Bayside Village and Boulevard Mall were effective February 1, 2013. The unaudited supplemental pro forma operating data is not necessarily indicative of what the actual results of operations of the Company would have been assuming the transactions had been effective as set forth above, nor do they purport to represent the Company’s results of operations for future periods. The qualitative and quantitative effect to the pro forma operating data related to the remaining gains on change in control of interests described in the table above was not material.
		Year Ended December 31, 2014			Pro Forma Adjustments			Pro Forma Year Ended December 31, 2014
		(in thousands, except per share data)
	Pro forma revenues	$	966,052		$	40,721		$	1,006,773
	Pro forma earnings (loss) from continuing operations	$	(34,032	)	$	13,638		$	(20,394	)
	Pro forma net earnings (loss) attributable to common shareholders	$	(7,595	)	$	775		$	(6,820	)
	Weighted average shares outstanding - Diluted	198,480,783						198,480,783
	Diluted net loss attributable to common shareholders	$	(0.04	)				$	(0.03	)
		11 Months Ended December 31, 2013			Pro Forma Adjustments			Pro Forma 11 Months Ended December 31, 2013
		(in thousands, except per share data)
	Pro forma revenues	$	998,272		$	39,819		$	1,038,091
	Pro forma earnings (loss) from continuing operations	$	(50,591	)	$	9,963		$	(40,628	)
	Pro forma net earnings (loss) attributable to common shareholders	$	(5,492	)	$	1,427		$	(4,065	)
	Weighted average shares outstanding - Diluted	198,696,729						198,696,729
	Diluted net loss attributable to common shareholders	$	(0.03	)				$	(0.02	)

Gain_Loss_on_Extinguishment_of

Gain (Loss) on Extinguishment of Debt	12 Months Ended
	Dec. 31, 2014
Gains (Losses) on Extinguishment of Debt [Abstract]
Gain on Extinguishment of Debt	Gain (Loss) on Extinguishment of Debt
	For the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, the Company recorded $(1,179,000), $4,549,000 and $7,096,000, respectively, as gain (loss) on extinguishment of debt.
	The amount for 2013 primarily relates to a $24,669,000 gain on the extinguishment of nonrecourse mortgage debt at Ten MetroTech Center partially offset by a $13,077,000 loss on the redemptions of the Senior Notes due 2034 and 2017 and a $4,762,000 loss on the exchange of the 2014 Senior Notes for Class A common stock.
	The gain on extinguishment of debt at Ten MetroTech Center resulted from the debt restructuring during the year ended January 31, 2013 of a defaulted nonrecourse mortgage, which had a carrying value of $73,500,000. The nonrecourse mortgage consisted of a promissory note (“A note”) that was subject to a subordinated participation (“B note”). During 2012, the B noteholder bought out the A noteholder’s interest and became the sole holder of the entire nonrecourse mortgage. Concurrent with this transaction, the B noteholder applied restricted cash, which represented accumulated cash flow swept and retained by the loan servicer, of approximately $12,300,000 to the outstanding principal balance and the Company signed a forbearance agreement that included a further reduction of the outstanding principal balance to $40,000,000. The new lender agreed to not continue to prosecute the foreclosure proceedings for two years as long as the Company complied with the terms of the forbearance agreement. The forbearance agreement increased the interest rate to 9% per annum and required a participation payment in the amount equal to 50% of any net proceeds, as defined in the forbearance agreement, in excess of $40,000,000 in the event the Company sells the property during the two-year forbearance period. Under the accounting guidance for troubled debt restructuring, no gain was recorded on the transaction and all amounts paid to the lender for interest, principal or applicable participation fees during the two-year forbearance period was applied to reduce the carrying value of the liability. Upon settlement of the nonrecourse mortgage during the 11 months ended December 31, 2013, a gain was recognized in an amount equal to the then carrying value of the liability in excess of $40,000,000.
	The amount for 2012 primarily relates to a $9,425,000 gain on extinguishment of nonrecourse mortgage debt at Terminal Tower.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The income tax expense (benefit) related to continuing operations consists of the following:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Current
	Federal	$	(1,616	)	$	(1,725	)	$	(54,157	)
	State	6,547			2,287			(6,287		)
		4,931			562			(60,444		)
	Deferred
	Federal	(29,711		)	13,172			48,258
	State	7,584			(1,468		)	(1,735		)
		(22,127		)	11,704			46,523
	Total income tax expense (benefit)	$	(17,196	)	$	12,266		$	(13,921	)
	The effective tax rate for income taxes from continuing operations varies from the federal statutory rate of 35% due to the following items:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(dollars in thousands)
	Earnings (loss) before income taxes	$	(138,136	)	$	(147,488	)	$	(79,747	)
	Equity in earnings of unconsolidated entities, net of impairment	86,908			109,163			44,631
	Less: Noncontrolling interests	13,475			71,525			1,251
	Earnings (loss) from continuing operations, including noncontrolling interest, before income taxes	(37,753		)	33,200			(33,865		)
	Income taxes computed at the statutory rate	(13,214		)	11,620			(11,853		)
	Increase (decrease) in tax resulting from:
	State taxes, net of federal benefit	7,860			(887		)	(5,233		)
	State net operating loss, net of federal benefit	(3,899		)	2,845			1,667
	General business credits	(15,099		)	(1,638		)	(947		)
	Valuation allowance	5,658			(5,205		)	(2,048		)
	Charitable contributions	2,135			3,356			2,628
	Permanent adjustments	(859		)	(18		)	3,037
	Conversion/Exchange of senior debt	—			1,667			—
	Other items	222			526			(1,172		)
	Total income tax expense (benefit)	$	(17,196	)	$	12,266		$	(13,921	)
	Effective tax rate	45.55		%	36.95		%	41.11		%
	The components of the deferred income tax expense (benefit) for continuing operations are as follows:
	Excess of tax over financial statement depreciation and amortization	$	8,343		$	(8,385	)	$	19,415
	Costs on land and rental properties under development expensed for tax purposes	2,919			4,818			11,048
	Revenues and expenses recognized in different periods for tax and financial statement purposes	122,380			132,380			50,278
	Difference between tax and financial statements related to unconsolidated entities	2,673			(5,246		)	207
	Impairment of real estate and land held for divestiture	(96,892		)	(128,357		)	(16,178		)
	Deferred state taxes, net of federal benefit	1,045			1,277			882
	Utilization of (addition to) tax loss carryforward excluding effect of stock options	(54,272		)	21,916			(16,230		)
	Valuation allowance	5,658			(5,205		)	(2,048		)
	General business credits	(15,099		)	(520		)	(947		)
	Alternative Minimum Tax credits	1,118			(974		)	96
	Deferred income tax expense (benefit)	$	(22,127	)	$	11,704		$	46,523
	The components of the deferred income tax liability are as follows:
		Temporary Differences							Deferred Tax
		December 31, 2014			December 31, 2013				December 31, 2014			December 31, 2013
		(in thousands)
	Depreciation	$	539,977		$	424,595			$	209,419		$	164,671
	Capitalized costs	765,081			395,733				296,721			153,508
	Tax loss carryforward	(254,201		)	(99,138		)		(88,970		)	(34,698		)
	State loss carryforward, net of federal benefit	—			—				(25,061		)	(21,170		)
	Valuation allowance	—			—				53,735			48,077
	Federal tax credits and other carryforwards	—			—				(69,619		)	(56,274		)
	Other comprehensive loss	(96,127		)	(125,099		)		(37,281		)	(48,517		)
	Basis in unconsolidated entities	420,705			367,892				163,162			142,680
	Other	(34,142		)	370,743				(19,632		)	137,617
	Total	$	1,341,293		$	1,334,726			$	482,474		$	485,894
	Income taxes paid (refunded) were $6,469,000, $5,541,000 and $(296,000) for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively. At December 31, 2014, the Company had a federal net operating loss carryforward for tax purposes of $307,200,000 expiring in the years ending December 31, 2029 through 2034, a charitable contribution deduction carryforward of $16,234,000 expiring in the years ending December 31, 2015 through 2019, General business credit carryovers of $36,779,000 expiring in the years ending December 31, 2018 through 2034, and an alternative minimum tax (“AMT”) credit carryforward of $27,452,000 that is available until used to reduce federal tax to the AMT amount.
	During 2014, one of the Company’s partnerships was under audit with regards to the allocation of historic tax credits among the members of the partnership for the partnership’s tax year ended December 31, 2010. See Note J – Commitments and Contingencies for additional information.
	The Company’s policy is to consider a variety of tax-deferral strategies, including tax deferred exchanges, when evaluating its future tax position. The Company has a full valuation allowance against the deferred tax asset associated with its charitable contributions. The Company has a valuation allowance against its general business credits, other than those general business credits which are eligible to be utilized to reduce future AMT liabilities. The Company has a valuation allowance against certain of its state net operating losses and state bonus depreciation deferred assets. These valuation allowances exist because management believes it is more likely than not the Company will not realize these benefits.
	On January 13, 2015, the Company announced its Board of Directors approved a plan to pursue conversion to Real Estate Investment Trust (“REIT”) status effective for the tax year beginning January 1, 2016. If the Company were to convert to REIT status, it is anticipated that certain subsidiaries may be treated as taxable REIT subsidiaries and would continue to be subject to corporate income taxes. In addition, the Company could be subject to corporate income taxes related to assets sold during the 10 year period following the date of conversion, to the extent such sold assets had a built-in gain on the date of conversion.
The Company applies the “with-and-without” methodology for recognizing excess tax benefits from the deduction of stock-based compensation. The net operating loss available for the tax return, as is noted in the paragraph above, is greater than the net operating loss available for the tax provision due to excess deductions from stock-based compensation reported on the return, as well as the impact of adjustments to the net operating loss under accounting guidance on accounting for uncertainty in income taxes. As of December 31, 2014, the Company has not recorded a net deferred tax asset of approximately $18,475,000 from excess stock-based compensation deductions taken on the tax return for which a benefit has not yet been recognized in the Company’s tax provision.
	December 31, 2014			December 31, 2013
	(in thousands)
Deferred tax liabilities	$	1,668,655		$	1,423,173
Deferred tax assets	1,239,916			985,356
Less: valuation allowance (1)	(53,735		)	(48,077		)
	1,186,181			937,279
Net deferred tax liability	$	482,474		$	485,894
-1	The valuation allowance is related to state net operating losses and bonus depreciation, general business credits and charitable contributions.
Accounting for Uncertainty in Income Taxes
Unrecognized tax benefits represent those tax benefits related to tax positions that have been taken or are expected to be taken in tax returns that are not recognized in the financial statements because management has either concluded it is not more likely than not the tax position will be sustained if audited by the appropriate taxing authority or the amount of the benefit will be less than the amount taken or expected to be taken in its income tax returns.
As of December 31, 2014 and 2013, the Company had unrecognized tax benefits of $804,000 and $968,000, respectively. The Company recognizes estimated interest payable on underpayments of income taxes and estimated penalties as components of income tax expense. As of December 31, 2014 and 2013, the Company had approximately $240,000 and $299,000, respectively, of accrued interest and penalties related to uncertain income tax positions. The Company recorded income tax expense (benefit) relating to interest and penalties on uncertain tax positions of $(59,000), $135,000 and $10,000 for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively.
The Company files a consolidated United States federal income tax return. Where applicable, the Company files combined income tax returns in various states and it files individual separate income tax returns in other states. The Company’s federal consolidated income tax returns for the year ended January 31, 2011 and subsequent years are subject to examination by the IRS. Certain of the Company’s state returns for the years ended January 31, 2003 through January 31, 2011 and all state returns for the year ended January 31, 2012 and subsequent years are subject to examination by various taxing authorities.
A reconciliation of the total amounts of the Company’s unrecognized tax benefits, exclusive of interest and penalties, is depicted in the following table:
	Unrecognized Tax Benefit
	December 31, 2014			December 31, 2013
	(in thousands)
Beginning balance, January 1, 2014 and February 1, 2013	$	968		$	584
Gross increases for tax positions of prior years	—			527
Settlements	(164		)	—
Lapse of statutes of limitation	—			(143		)
Unrecognized tax benefits balance at December 31, 2014 and 2013	$	804		$	968
The total amount of unrecognized tax benefits that would affect the Company’s effective tax rate, if recognized as of December 31, 2014 and 2013, is $523,000 and $629,000, respectively. Based upon the Company’s assessment of the outcome of examinations that are in progress, the settlement of liabilities, or as a result of the expiration of the statutes of limitation for certain jurisdictions, it is reasonably possible the related unrecognized tax benefits for tax positions taken regarding previously filed tax returns will change from those recorded at December 31, 2014. Due to the reasons above, the entire $804,000 of unrecognized benefits could decrease during the next twelve months.

Discontinued_Operations_and_Ga

Discontinued Operations and Gain (Loss) on Disposition of Rental Properties	12 Months Ended
	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Gain (Loss) on Disposition of Rental Properties	Discontinued Operations and Gain (Loss) on Disposition of Rental Properties
	See Note A – Accounting Policies for discussion of adoption of new discontinued operations accounting guidance during the year ended December 31, 2014.
	The following table summarizes the rental properties included in discontinued operations:
	Property	Location	Square Feet/	Period	Year Ended 12/31/14	11 Months Ended 12/31/13	Year Ended 1/31/13
			Number of Units (Unaudited)	Disposed
	Commercial Group:
	Promenade Bolingbrook	Bolingbrook, Illinois	771,000 square feet	Q2-2014	Yes	Yes	Yes
	Quartermaster Plaza	Philadelphia, Pennsylvania	456,000 square feet	Q1-2014	Yes	Yes	Yes
	Mesa del Sol - 5600 University SE	Albuquerque, New Mexico	87,000 square feet	Q1-2014	Yes	Yes	Yes
	Orchard Town Center	Westminster, Colorado	603,000 square feet	Q4-2013	—	Yes	Yes
	Colorado Studios	Denver, Colorado	75,000 square feet	Q3-2013	—	Yes	Yes
	Higbee Building	Cleveland, Ohio	815,000 square feet	Q2-2013	—	Yes	Yes
	Sheraton Station Square	Pittsburgh, Pennsylvania	399 rooms	Q2-2013	—	Yes	Yes
	Fairmont Plaza	San Jose, California	335,000 square feet	Q4-2012	—	—	Yes
	White Oak Village	Richmond, Virginia	843,000 square feet	Q3-2012	—	—	Yes
	Quebec Square	Denver, Colorado	739,000 square feet	Q1-2012	—	—	Yes
	Seven triple net lease properties	Various	422,000 square feet	Various	—	Yes	Yes
	Residential Group:
	Millender Center	Detroit, Michigan	339 units	Q1-2013	—	Yes	Yes
	Emerald Palms	Miami, Florida	505 units	Q4-2012	—	—	Yes
	Southfield	Whitemarsh, Maryland	212 units	Q3-2012	—	—	Yes
	The following table summarizes the operating results related to discontinued operations:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Revenues	$	7,034		$	64,093		$	113,076
	Expenses
	Operating expenses	3,026			35,381			55,926
	Depreciation and amortization	987			12,909			23,566
	Impairment of real estate	—			76,713			4,254
		4,013			125,003			83,746
	Interest income	—			274			390
	Gain on disposition of rental properties	28,100			41,831			100,900
	Net loss on change in control of interest	—			—			(1,585		)
	Interest expense	(5,538		)	(12,015		)	(23,167		)
	Amortization of mortgage procurement costs	(41		)	(476		)	(1,389		)
	Loss on extinguishment of debt	(448		)	(40		)	(464		)
	Earnings (loss) before income taxes	25,094			(31,336		)	104,015
	Income tax expense (benefit)	12,082			(11,137		)	46,549
	Earnings (loss) from discontinued operations	13,012			(20,199		)	57,466
	Noncontrolling interests
	Gain on disposition of rental properties	58			5,960			965
	Operating earnings (loss) from rental properties	(8		)	82			132
		50			6,042			1,097
	Earnings (loss) from discontinued operations attributable to Forest City Enterprises, Inc.	$	12,962		$	(26,241	)	$	56,369
	The following table summarizes the pre-tax gain (loss) on disposition of rental properties:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Specialty Retail Centers:
	Quartermaster Plaza	$	26,373		$	—		$	—
	Quebec Square	—			—			8,879
	Regional Malls:
	Promenade Bolingbrook	1,276			—			—
	Orchard Town Center	—			(2,157		)	—
	Office Buildings:
	Mesa del Sol - 5600 University SE	451			—			—
	Higbee Building	—			2,922			—
	Colorado Studios	—			1,239			—
	Fairmont Plaza	—			—			26,877
	Apartment Communities:
	Millender Center	—			21,660			—
	Emerald Palms	—			—			45,845
	Southfield	—			—			13,445
Sheraton Station Square (Hotel)	—			18,096			—
Triple net lease properties	—			(132		)	6,568
Other	—			203			(714		)
	$	28,100		$	41,831		$	100,900

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share
	The loss from continuing operations attributable to Forest City Enterprises, Inc. for the year ended December 31, 2014 and the year ended January 31, 2013 was allocated solely to holders of common stock as the participating security holders do not share in the losses.
	The reconciliation of the basic and diluted EPS computations is shown in the following table:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
	Numerators (in thousands)
	Earnings (loss) from continuing operations attributable to Forest City Enterprises, Inc.	$	(20,557	)	$	20,934		$	(19,944	)
	Preferred dividends and inducements of preferred stock conversions	—			(185		)	(32,129		)
	Undistributed earnings allocated to participating securities	—			(605		)	—
	Earnings (loss) from continuing operations attributable to common shareholders - Basic	(20,557		)	20,144			(52,073		)
	Undistributed earnings allocated to participating securities	—			605			—
	Earnings (loss) from continuing operations attributable to common shareholders - Diluted	$	(20,557	)	$	20,749		$	(52,073	)
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	(7,595	)	$	(5,307	)	$	36,425
	Preferred dividends and inducements of preferred stock conversions	—			(185		)	(32,129		)
	Undistributed earnings allocated to participating securities	—			—			(1,836		)
	Net earnings (loss) attributable to common shareholders - Basic and Diluted	$	(7,595	)	$	(5,492	)	$	2,460
	Denominators
	Weighted average shares outstanding - Basic	198,480,783			193,465,572			172,621,723
	Effect of stock options, restricted stock and performance shares	—			1,584,402			—
	Effect of convertible debt	—			—			—
	Effect of convertible Class A Common Units	—			3,646,755			—
	Weighted average shares outstanding - Diluted (1)	198,480,783			198,696,729			172,621,723
	Earnings Per Share
	Earnings (loss) from continuing operations attributable to common shareholders - Basic and Diluted	$	(0.10	)	$	0.1		$	(0.30	)
	Net earnings (loss) attributable to common shareholders - Basic and Diluted	$	(0.04	)	$	(0.03	)	$	0.01
	-1	Incremental shares from dilutive options, restricted stock and convertible securities aggregating 37,146,769 and 49,642,605 for the years ended December 31, 2014 and January 31, 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive due to loss from continuing operations. Convertible securities of 30,200,589 for the 11 months ended December 31, 2013 were not included in the computation of diluted EPS because their effect is anti-dilutive under the if-converted method. Weighted-average options, restricted stock and performance shares of 3,483,885, 3,601,719 and 4,105,670 for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive under the treasury stock method.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment Information	Segment Information
	The following tables summarize financial data for the Company’s reportable operating segments. All amounts are presented in thousands.
		December 31, 2014			December 31, 2013
		Identifiable Assets
	Commercial Group	$	4,210,714		$	5,120,360
	Residential Group	3,172,188			2,468,708
	Arena	955,570			984,937
	Land Development Group	250,833			260,070
	Corporate Activities	225,635			117,950
		$	8,814,940		$	8,952,025
		Year Ended			11 Months Ended			Year Ended			Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013			December 31, 2014			December 31, 2013			January 31, 2013
		Revenues									Operating Expenses
	Commercial Group	$	517,487		$	593,714		$	680,533		$	300,123		$	334,996		$	327,263
	Residential Group	256,009			249,677			264,547			174,472			179,405			184,289
	Arena	116,695			104,532			48,353			76,096			72,659			49,175
	Land Development Group	75,861			50,349			54,634			32,486			33,737			48,055
	Corporate Activities	—			—			—			51,116			45,021			52,450
		$	966,052		$	998,272		$	1,048,067		$	634,293		$	665,818		$	661,232
		Depreciation and Amortization									Interest and Other Income
	Commercial Group	$	124,821		$	181,697		$	148,983		$	7,929		$	18,078		$	14,366
	Residential Group	68,089			55,031			51,885			21,081			21,742			21,149
	Arena	34,299			33,231			8,888			—			—			—
	Land Development Group	359			364			840			13,597			12,218			9,866
	Corporate Activities	2,898			2,731			1,658			173			245			164
		$	230,466		$	273,054		$	212,254		$	42,780		$	52,283		$	45,545
		Interest Expense									Capital Expenditures
	Commercial Group	$	129,515		$	168,056		$	169,590		$	119,343		$	171,002		$	327,867
	Residential Group	28,108			32,409			18,680			289,502			245,647			149,160
	Arena	40,229			34,220			(122		)	10,972			43,928			325,744
	Land Development Group	(1,090		)	(320		)	3,801			37			819			190
	Corporate Activities	37,643			50,677			61,375			15			232			904
		$	234,405		$	285,042		$	253,324		$	419,869		$	461,628		$	803,865
	The Company uses Funds From Operations (“FFO”) to report its operating results. FFO is a non-GAAP measure as defined by the National Association of Real Estate Investment Trusts (“NAREIT”) and is a measure of performance used by publicly traded REITs. Although the Company is not a REIT, management believes it is important to publish this measure to allow for easier comparison of its performance to its peers. FFO is defined by NAREIT as net earnings excluding the following items at the Company’s proportional share: i) gain (loss) on disposition of rental properties, divisions and other investments (net of tax); ii) non-cash charges for real estate depreciation and amortization; iii) impairment of depreciable real estate (net of tax); iv) extraordinary items (net of tax); and v) cumulative or retrospective effect of change in accounting principle (net of tax).
	The Company believes that, although its business has many facets such as development, acquisitions, disposals, and property management, the core of its business is the recurring operations of its portfolio of real estate assets. The Company’s Chief Executive Officer, the chief operating decision maker, uses FFO, as presented, to assess performance of the Company’s real estate assets by reportable operating segment because it provides information on the financial performance of the core real estate portfolio operations. FFO measures the profitability of a real estate segment’s operations of collecting rent, paying operating expenses and servicing its debt.
	The reconciliations of net earnings (loss) to FFO by segment are shown in the following tables. All amounts are presented in thousands.
	Year Ended December 31, 2014	Commercial			Residential			Arena			Land			Corporate Activities			Total
		Group			Group						Development
											Group
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	(67,682	)	$	115,833		$	(17,555	)	$	51,360		$	(89,551	)	$	(7,595	)
	Depreciation and amortization – Real Estate Groups	178,169			97,173			19,895			159			—			295,396
	Net gain on disposition of full or partial interest in rental properties	(7,241		)	(23,013		)	—			—			—			(30,254		)
	Gain on disposition of unconsolidated entities	(25,279		)	(27,142		)	—			—			—			(52,421		)
	Impairment of consolidated depreciable real estate	129,059			146,039			—			—			—			275,098
	Impairment of unconsolidated depreciable real estate	3,124			—			—			—			—			3,124
	Discontinued operations:
	Depreciation and amortization – Real Estate Groups	986			—			—			—			—			986
	Gain on disposition of rental properties	(28,042		)	—			—			—			—			(28,042		)
	Income tax expense (benefit) on non-FFO:
	Gain on disposition of rental properties	—			—			—			—			44,988			44,988
	Impairment of depreciable real estate	—			—			—			—			(106,691		)	(106,691		)
	FFO	$	183,094		$	308,890		$	2,340		$	51,519		$	(151,254	)	$	394,589
	11 Months Ended December 31, 2013
	Net earnings (loss) attributable to common shareholders	$	84,294		$	31,220		$	(19,514	)	$	18,915		$	(120,407	)	$	(5,492	)
	Preferred dividends	—			—			—			—			185			185
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	84,294		$	31,220		$	(19,514	)	$	18,915		$	(120,222	)	$	(5,307	)
	Depreciation and amortization – Real Estate Groups	220,135			83,154			19,119			258			—			322,666
	Net gain on disposition of partial interest in rental properties	(496,092		)	—			—			—			—			(496,092		)
	Gain on disposition of unconsolidated entities	(68,430		)	—			—			—			—			(68,430		)
	Impairment of consolidated depreciable real estate	17,474			1,185			—			—			—			18,659
	Discontinued operations:
	Depreciation and amortization – Real Estate Groups	12,766			165			—			—			—			12,931
	Gain on disposition of rental properties	(19,843		)	(16,028		)	—			—			—			(35,871		)
	Impairment of consolidated depreciable real estate	76,713			—			—			—			—			76,713
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	—			—			—			—			233,980			233,980
Impairment of depreciable real estate	—			—			—			—			(36,988		)	(36,988		)
FFO	$	(172,983	)	$	99,696		$	(395	)	$	19,173		$	76,770		$	22,261
Year Ended January 31, 2013
Net earnings (loss) attributable to common shareholders	$	82,022		$	132,141		$	(497	)	$	(23,833	)	$	(185,537	)	$	4,296
Preferred dividends and inducements of preferred stock conversions	—			—			—			—			32,129			32,129
Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	82,022		$	132,141		$	(497	)	$	(23,833	)	$	(153,408	)	$	36,425
Depreciation and amortization – Real Estate Groups	186,115			85,977			5,213			661			—			277,966
Gain on disposition of unconsolidated entities	(16,107		)	(34,959		)	—			—			—			(51,066		)
Impairment of consolidated depreciable real estate	30,660			—			—			—			—			30,660
Impairment of unconsolidated depreciable real estate	—			—			—			390			—			390
Discontinued operations:
Depreciation and amortization – Real Estate Groups	20,357			3,114			—			—			—			23,471
Gain on disposition of rental properties	(40,645		)	(59,290		)	—			—			—			(99,935		)
Impairment of consolidated depreciable real estate	4,254			—			—			—			—			4,254
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	—			—			—			—			58,935			58,935
Impairment of depreciable real estate	—			—			—			—			(13,692		)	(13,692		)
FFO	$	266,656		$	126,983		$	4,716		$	(22,782	)	$	(108,165	)	$	267,408

Subsequent_Event_Subsequent_Ev

Subsequent Event Subsequent Event	12 Months Ended
	Dec. 31, 2014
Subsequent Event [Abstract]
Subsequent Event	Subsequent Event
	On January 13, 2015, the Company announced its Board of Directors approved a plan to pursue conversion to REIT status. The Company expects to elect REIT status for its taxable year beginning January 1, 2016, subject to business conditions, the completion of related preparatory work and obtaining necessary third-party consents.

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
	Description	Balance at		Additions		Deductions		Balance at
		Beginning		Charged to				End of
		of Period		Costs and				Period
				Expenses
		(in thousands)
	Allowance for doubtful accounts and notes receivable
	December 31, 2014	$	15,141	$	3,128	$	7,498	$	10,771
	December 31, 2013	$	25,858	$	13,467	$	24,184	$	15,141
	January 31, 2013	$	25,875	$	6,016	$	6,033	$	25,858
	Valuation reserve on other investments
	December 31, 2014	$	5,312	$	43	$	35	$	5,320
	December 31, 2013	$	5,277	$	35	$	—	$	5,312
	January 31, 2013	$	5,168	$	109	$	—	$	5,277
	Valuation allowances for deferred tax assets
	December 31, 2014	$	48,077	$	11,893	$	6,235	$	53,735
	December 31, 2013	$	53,282	$	1,047	$	6,252	$	48,077
	January 31, 2013	$	55,330	$	4,025	$	6,073	$	53,282

Real_Estate_and_Accumulated_De

Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2014
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Real Estate and Accumulated Depreciation
	(c) Financial Statements Schedules (continued)
	SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION
	Forest City Enterprises, Inc. and Subsidiaries
						Initial Cost to Company						Cost Capitalized Subsequent to Acquisition			Gross Amount at Which Carried at Close of December 31, 2014						Accumulated Depreciation at December 31, 2014 (C)		Date of Construction/ Acquisition	Range of Lives on Which Depreciation in Latest Income Statement is Computed
	Name	Location	Amount of Encumbrance at December 31, 2014			Land and Improvements			Buildings and Improvements			Improvements and Carrying Costs			Land and Improvements		Buildings and Improvements		Total (A)(B)
	Office		(in thousands)
	Atlantic Terminal Office (2 Hanson Place)	Brooklyn, NY	$	101,831		$	—		$	108,940		$	3,739		$	—	$	112,679	$	112,679	$	23,569	2004	-1
	Ballston Common Office Center	Arlington, VA	42,750			7,301			45,964			6,599			7,301		52,563		59,864		11,374		2005	-1
	Commerce Court	Pittsburgh, PA	24,050			3,432			20,873			3,820			3,432		24,693		28,125		8,267		2007	-1
	Edgeworth Building	Richmond, VA	19,411			942			29,353			2,530			951		31,874		32,825		5,060		2006	-1
	Glen Forest Office Park (Richmond)	Richmond, VA	59,189			11,766			88,632			8,972			11,818		97,552		109,370		20,352		2007	-1
	Harlem Office	Manhattan, NY	—			—			31,672			8,422			—		40,094		40,094		8,231		2003	-1
	Illinois Science and Technology Park
	- 4901 Searle	Skokie, IL	20,689			837			16,227			4,525			837		20,752		21,589		3,665		2006	-1
	- 4930 Oakton	Skokie, IL	—			670			1,842			2,554			1,081		3,985		5,066		733		2006	-1
	- 8025 Lamon	Skokie, IL	14,737			978			6,426			20,680			978		27,106		28,084		3,571		2006	-1
	- 8045 Lamon	Skokie, IL	18,261			3,301			21,198			31,896			3,301		53,094		56,395		7,454		2007	-1
	Johns Hopkins-855 North Wolfe Street	Baltimore, MD	69,033			7,314			76,318			13,867			7,314		90,185		97,499		12,058		2008	-1
	Johns Hopkins Parking Garage	Baltimore, MD	—			1,600			26,185			2,774			1,600		28,959		30,559		1,189		2012	-1
	Mesa del Sol
	Aperture Center	Albuquerque, NM	—			834			3,010			239			834		3,249		4,083		1,231		2008	-1
	Fidelity	Albuquerque, NM	22,331			5,003			29,872			293			5,003		30,165		35,168		3,420		2008	-1
	Metrotech Campus
	One MetroTech Center	Brooklyn, NY	160,406			—			212,153			64,302			23,543		252,912		276,455		112,690		1991	-1
	Two MetroTech Center	Brooklyn, NY	73,323			—			155,280			34,025			7,137		182,168		189,305		75,700		1990	-1
	Nine MetroTech Center	Brooklyn, NY	59,700			—			64,303			4,250			380		68,173		68,553		25,030		1997	-1
	Eleven MetroTech Center	Brooklyn, NY	61,000			—			41,290			17,047			6,270		52,067		58,337		23,989		1995	-1
	Twelve MetroTech Center	Brooklyn, NY	—			—			42,344			16,140			1,847		56,637		58,484		11,414		2004	-1
	Fifteen MetroTech Center	Brooklyn, NY	165,736			3,762			163,414			8,482			—		175,658		175,658		39,101		2003	-1
	New York Times	Manhattan, NY	640,000			91,737			375,931			137,865			141,479		464,054		605,533		67,273		2007	-1
	One Pierrepont Plaza	Brooklyn, NY	3,907			—			86,863			99,787			558		186,092		186,650		105,788		1988	-1
	Post Office Plaza	Cleveland, OH	14,488			—			57,213			14,751			—		71,964		71,964		41,255		1990	-1
	Skylight Office Tower	Cleveland, OH	26,841			2,500			32,695			35,936			—		71,131		71,131		39,617		1991	-1
	Terminal Tower	Cleveland, OH	—			—			29,422			45,982			—		75,404		75,404		59,403		1983	-1
	University of Pennsylvania	Philadelphia, PA	45,230			—			41,146			10,707			—		51,853		51,853		10,386		2004	-1
	Miscellaneous Investments	Various	—			1,363			51,420			(18,656		)	38		34,089		34,127		14,629		Various	-1
	Office Subtotal		$	1,642,913		$	143,340		$	1,859,986		$	581,528		$	225,702	$	2,359,152	$	2,584,854	$	736,449
	(c) Financial Statements Schedules (continued)
	SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION
	Forest City Enterprises, Inc. and Subsidiaries
						Initial Cost to Company						Cost Capitalized Subsequent to Acquisition			Gross Amount at Which Carried at Close of December 31, 2014						Accumulated Depreciation at December 31, 2014 (C)		Date of Construction/ Acquisition	Range of Lives on Which Depreciation in Latest Income Statement is Computed
	Name	Location	Amount of Encumbrance at December 31, 2014			Land and Improvements			Buildings and Improvements			Improvements and Carrying Costs			Land and Improvements		Buildings and Improvements		Total (A)(B)
	Retail
	Avenue at Tower City Center	Cleveland, OH	$	—		$	—		$	174,726		$	(44,801	)	$	192	$	129,733	$	129,925	$	102,352	1990	-1
	Ballston Common	Arlington, VA	42,500			170			18,069			67,230			442		85,027		85,469		46,217		1986	-1
	Boulevard Mall	Amherst, NY	100,780			17,050			89,992			—			17,050		89,992		107,042		758		1996	-1
	Brooklyn Commons	Brooklyn, NY	20,415			—			23,794			1,688			20,017		5,465		25,482		1,729		2004	-1
	Shops at Atlantic Center Site V	Brooklyn, NY	—			—			3,238			1,485			1,047		3,676		4,723		1,325		1998	-1
	Shops at Northfield Stapleton	Denver, CO	—			4,830			80,687			87,474			24,879		148,112		172,991		33,145		2005	-1
	Shops at Wiregrass	Tampa, FL	84,950			28,842			109,587			4,690			26,242		116,877		143,119		22,385		2008	-1
	Station Square	Pittsburgh, PA	34,608			8,611			37,484			38,995			25,674		59,416		85,090		28,278		1994	-1
	The Yards
	Boilermaker Shops	Washington, D.C.	12,437			529			12,468			5,212			527		17,682		18,209		734		2012	-1
	Lumber Shed	Washington, D.C.	10,000			306			12,820			478			306		13,298		13,604		419		2013	-1
	Tower City Parking	Cleveland, OH	—			2,317			11,789			16,084			2,048		28,142		30,190		12,530		1990	-1
	Westchester’s Ridge Hill	Yonkers, NY	330,000			236,692			661,705			30,491			238,792		690,096		928,888		73,216		2011	-1
	Miscellaneous Investments	Various	2,620			306			1,688			401			306		2,089		2,395		934		Various	-1
	Retail Subtotal		$	638,310		$	299,653		$	1,238,047		$	209,427		$	357,522	$	1,389,605	$	1,747,127	$	324,022
	Arena
	Barclays Center	Brooklyn, NY	$	457,055		$	—		$	890,213		$	49,816		$	—	$	940,029	$	940,029	$	75,354	2012	-1
	Apartments
	100 (100 Landsdowne)	Cambridge, MA	$	45,000		$	728		$	60,020		$	795		$	823	$	60,720	$	61,543	$	14,267	2005	-1
	1111 Stratford	Stratford, CT	15,164			2,414			15,798			4,852			2,432		20,632		23,064		1,023		2013	-1
1251 S. Michigan	Chicago, IL	9,500			97			13,978			1,300			106		15,269		15,375		3,148		2006	-1
2175 Market Street	San Fransisco, CA	19,837			3,793			34,508			—			3,793		34,508		38,301		344		2014	-1
91 Sidney	Cambridge, MA	28,065			213			42,276			—			213		42,276		42,489		1,198		2002	-1
American Cigar Company	Richmond, VA	11,530			1,395			23,533			573			1,411		24,090		25,501		4,626		2000	-1
Aster Conservatory Green	Denver, CO	36,000			1,325			13,125			33,375			1,599		46,226		47,825		1,707		2013	-1
Bayside Village	San Francisco, CA	126,896			153,894			282,807			—			153,894		282,807		436,701		—		1988	-1
Botanica Eastbridge	Denver, CO	13,000			765			13,698			535			765		14,233		14,998		1,269		2012	-1
Brookview Place	Dayton, OH	2,180			155			4,588			677			155		5,265		5,420		3,698		1979	-1
Cameron Kinney	Richmond, VA	—			2,340			23,206			3,788			2,496		26,838		29,334		5,132		2007	-1
Cedar Place	Lansing, MI	3,859			399			7,000			449			399		7,449		7,848		3,774		1974	-1
Consolidated-Carolina	Richmond, VA	20,981			1,028			30,425			1,151			1,032		31,572		32,604		7,871		2003	-1
Cutter’s Ridge at Tobacco Row	Richmond, VA	—			389			4,356			(109		)	400		4,236		4,636		1,160		2006	-1
Drake	Philadelphia, PA	26,685			1,353			38,104			8,289			1,353		46,393		47,746		14,036		1998	-1
Easthaven at the Village	Beachwood, OH	25,276			7,919			39,768			7,870			8,099		47,458		55,557		20,285		1994	-1
Grand Lowry Lofts	Denver, CO	—			1,448			22,726			3,344			1,621		25,897		27,518		5,927		2000	-1
(c) Financial Statements Schedules (continued)
SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION
Forest City Enterprises, Inc. and Subsidiaries
					Initial Cost to Company						Cost Capitalized Subsequent to Acquisition			Gross Amount at Which Carried at Close of December 31, 2014						Accumulated Depreciation at December 31, 2014 (C)		Date of Construction/ Acquisition	Range of Lives on Which Depreciation in Latest Income Statement is Computed
Name	Location	Amount of Encumbrance at December 31, 2014			Land and Improvements			Buildings and Improvements			Improvements and Carrying Costs			Land and Improvements		Buildings and Improvements		Total (A)(B)
Apartments (continued)
Hamel Mill Lofts	Haverhill, MA	38,999			3,974			72,902			3,224			3,111		76,989		80,100		10,893		2008	-1
Heritage	San Diego, CA	28,000			7,433			42,202			9,885			7,505		52,015		59,520		14,924		2002	-1
Hummingbird Pointe Apartments	Parma, OH	5,997			330			5,059			16,939			1,364		20,964		22,328		9,598		1972	-1
Independence Place I	Parma Heights, OH	4,080			210			6,671			1,328			225		7,984		8,209		4,168		1973	-1
Independence Place II	Parma Heights, OH	—			498			3,931			4,560			744		8,245		8,989		1,901		2003	-1
KBL (Kennedy Biscuit Lofts)	Cambridge, MA	15,600			716			23,645			4,965			719		28,607		29,326		16,120		1990	-1
Knolls	Orange, CA	32,520			53			23,759			598			53		24,357		24,410		11,511		1995	-1
Lofts 23	Cambridge, MA	5,987			221			17,026			306			315		17,238		17,553		4,582		2005	-1
Lofts at 1835 Arch	Philadelphia, PA	38,291			2,076			27,430			12,719			2,082		40,143		42,225		11,097		2001	-1
Lucky Strike	Richmond, VA	15,278			1,105			34,095			1,207			3,019		33,388		36,407		6,342		2008	-1
Mercantile Place on Main	Dallas, TX	36,329			8,876			75,478			8,085			8,798		83,641		92,439		16,071		2008	-1
Metro 417	Los Angeles, CA	47,997			8,545			67,326			5,417			8,547		72,741		81,288		15,131		2005	-1
Midtown Towers	Parma, OH	12,969			1,215			11,091			11,860			1,309		22,857		24,166		10,281		1969	-1
Museum Towers	Philadelphia, PA	30,755			3,474			18,158			6,586			3,909		24,309		28,218		9,416		1997	-1
North Church Towers and Gardens	Parma Heights, OH	5,090			789			4,037			3,168			816		7,178		7,994		1,756		2009	-1
One Franklintown	Philadelphia, PA	37,190			1,658			31,489			9,830			1,741		41,236		42,977		20,783		1988	-1
Pavilion	Chicago, IL	51,728			5,250			29,505			15,552			5,249		45,058		50,307		12,968		1992	-1
Perrytown Place	Pittsburgh, PA	4,587			463			6,898			516			463		7,414		7,877		4,051		1973	-1
Presidio Landmark	San Francisco, CA	43,563			2,060			92,687			4,983			2,064		97,666		99,730		13,525		2010	-1
Queenswood	Corona, NY	28,729			321			39,243			1,072			327		40,309		40,636		18,121		1990	-1
River Lofts at Ashton Mill	Cumberland, RI	16,930			2,885			33,844			12,479			3,247		45,961		49,208		9,948		2005	-1
Sky55	Chicago, IL	68,517			3,965			80,930			3,989			4,016		84,868		88,884		20,041		2006	-1
The Aster Town Center	Denver, CO	8,364			487			9,901			365			493		10,260		10,753		1,007		2012	-1
The Continental	Dallas, TX	37,176			1,586			48,455			1,180			1,586		49,635		51,221		3,404		2013	-1
The Met (Metropolitan)	Los Angeles, CA	38,900			4,420			36,557			10,169			4,477		46,669		51,146		23,264		1989	-1
The Uptown	Oakland, CA	124,177			—			138,710			142			954		137,898		138,852		6,333		2013	-1
The Wilson	Dallas, TX	12,776			2,217			16,565			3,627			1,937		20,472		22,409		4,018		2007	-1
The Yards
Foundry Lofts	Washington, D.C.	44,790			2,086			52,806			5,959			2,092		58,759		60,851		5,005		2011	-1
Twelve12	Washington, D.C.	75,606			5,444			106,509			—			5,444		106,509		111,953		1,355		2014	-1
Town Center (Botanica on the Green & Crescent Flats)	Denver, CO	37,436			3,436			63,073			4,898			3,344		68,063		71,407		18,520		2004	-1
Winchester Lofts	New Haven, CT	35,902			—			45,650			—			—		45,650		45,650		280		2014	-1
Miscellaneous Investments	Various	8,093			149			40,697			6,474			152		47,168		47,320		14,615		Various	-1
Apartments Subtotal		$	1,376,329		$	255,597		$	1,976,245		$	238,971		$	260,693	$	2,210,120	$	2,470,813	$	410,494
(c) Financial Statements Schedules (continued)
SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION
Forest City Enterprises, Inc. and Subsidiaries
					Initial Cost to Company						Cost Capitalized Subsequent to Acquisition			Gross Amount at Which Carried at Close of December 31, 2014						Accumulated Depreciation at December 31, 2014 (C)		Date of Construction/ Acquisition	Range of Lives on Which Depreciation in Latest Income Statement is Computed
Name	Location	Amount of Encumbrance at December 31, 2014			Land and Improvements			Buildings and Improvements			Improvements and Carrying Costs			Land and Improvements		Buildings and Improvements		Total (A)(B)
Land Inventory
Stapleton	Denver, CO	$	—		$	51,604		$	—		$	—		$	51,604	$	—	$	51,604	$	—	Various	N/A
LiveWork Las Vegas	Las Vegas, NV	—			29,164			—			—			29,164		—		29,164		—		Various	N/A
Commercial Outlots	Various	—			16,701			—			—			16,701		—		16,701		—		Various	N/A
Land Inventory Subtotal		$	—		$	97,469		$	—		$	—		$	97,469	$	—	$	97,469	$	—
Corporate and Other Equipment
Corporate office	Various	$	—		$	—		$	10,738		$	—		$	—	$	10,738	$	10,738	$	9,646	Various	-1
Construction Projects
Office
1812 Ashland Ave	Baltimore, MD	29,422			—			8,940			—			—		8,940		8,940		—		Various	N/A
Apartments
1001 4th Street, SW	Washington, D.C.	—			3,709			13,059			—			3,709		13,059		16,768		—		Various	N/A
Aster Town Center II	Denver, CO	—			272			2,220			—			272		2,220		2,492		—		Various	N/A
B2 BKLYN	Brooklyn, NY	56,605			—			40,538			—			—		40,538		40,538		—		Various	N/A
Blossom Plaza	Los Angeles, CA	5,300			—			30,483			—			—		30,483		30,483		—		Various	N/A
Kapolei Lofts	Kapolei, HI	—			20,443			11,915			—			20,443		11,915		32,358		—		Various	N/A
The Yards - Arris	Washington, D.C.	—			8,395			38,611			—			8,395		38,611		47,006		—		Various	N/A
Miscellaneous Investments	Various	—			—			6,503			—			—		6,503		6,503		—		Various	N/A
Development Projects
Office
The Science + Technology Park at Johns Hopkins	Baltimore, MD	—			5,386			15,599			—			5,386		15,599		20,985		—		Various	N/A
Retail
Ballston Common Mall Redevelopment	Arlington, VA	—			13,267			6,357			—			13,267		6,357		19,624		—		Various	N/A
Apartments
Broadway and Hill	Los Angeles, CA	—			27,129			6,203			—			27,129		6,203		33,332		—		Various	N/A
Mixed-use
Pier 70	San Francisco, CA	—			—			12,521			—			—		12,521		12,521		—		Various	N/A
The Yards	Washington, D.C.	4,300			—			58,026			—			—		58,026		58,026		—		Various	N/A
Waterfront Station	Washington, D.C.	—			7,431			11,044			—			7,431		11,044		18,475		—		Various	N/A
Miscellaneous Investments	Various	27,967			24,933			104,973			—			24,933		104,973		129,906		—		Various	N/A
Construction and Development Subtotal		$	123,594		$	110,965		$	366,992		$	—		$	110,965	$	366,992	$	477,957	$	—
Total Real Estate		$	4,238,201		$	907,024		$	6,342,221		$	1,079,742		$	1,052,351	$	7,276,636	$	8,328,987	$	1,555,965
(A)	The aggregate cost at December 31, 2014 for federal income tax purposes was $7,293,315. For (B) and (C) refer to the following page.
-1	Depreciation is computed based upon the following estimated useful lives:
	Years
Building and improvements (other than Arena)	40 – 50
Arena	34.5
Equipment and fixtures	5 – 15
Tenant improvements	Shorter of useful life or applicable lease term
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
(B)	Reconciliations of total real estate carrying value are as follows:
	Balance at beginning of period	$	8,475,571		$	10,026,010		$	9,646,870
	Additions during period -
	Improvements	399,411			471,653			791,705
	Other additions, primarily as a result of change in accounting method of property	603,589			171,260			60,897
	Other acquisitions	—			8,514			12,587
		1,003,000			651,427			865,189
	Deductions during period -
	Cost of real estate sold or retired	(302,181		)	(439,130		)	(370,110		)
	Cost of real estate in connection with disposal of partial interests	(536,255		)	(1,180,016		)	—
	Other deductions, primarily due to impairments and as a result of change in accounting method of property	(311,148		)	(582,720		)	(115,939		)
		(1,149,584		)	(2,201,866		)	(486,049		)
	Balance at end of period	$	8,328,987		$	8,475,571		$	10,026,010
(C)	Reconciliations of accumulated depreciation are as follows:
	Balance at beginning of period	$	1,469,328		$	1,654,632		$	1,526,503
	Additions during period - Charged to profit or loss	206,041			255,824			204,070
	Net other additions (deductions) during period - Acquisitions, retirements, sales or disposals	(119,404		)	(441,128		)	(75,941		)
	Balance at end of period	$	1,555,965		$	1,469,328		$	1,654,632

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of Forest City Enterprises, Inc., its wholly-owned subsidiaries and entities in which it has a controlling interest in accordance with accounting principles generally accepted in the United States of America (“GAAP”). All intercompany balances and transactions have been eliminated in consolidation.
	The accounting guidance for consolidation of variable interest entities (“VIEs”) requires an ongoing reassessment of determining whether a variable interest gives a company a controlling financial interest in a VIE. VIEs are entities in which the equity investors do not have sufficient equity at risk to finance their endeavors without additional financial support or the holders of the equity investment at risk do not have a controlling financial interest. The Company continuously reassesses whether or not it has the (a) power to direct the activities of the VIE that most significantly affect its economic performance and (b) the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE.
Use of Estimates	Use of Estimates
	The preparation of consolidated financial statements in conformity with GAAP requires the Company to make estimates and assumptions in certain circumstances that affect amounts reported in the accompanying consolidated financial statements and related notes. Some of the critical estimates made by the Company include, but are not limited to, determination of the primary beneficiary of VIEs, estimates of useful lives for long-lived assets, reserves for collection on accounts and notes receivable and other investments, the fair value estimate of redeemable noncontrolling interest, impairment of real estate and other-than-temporary impairments on equity method investments. As a result of the nature of estimates, actual results could differ.
Reclassifications	Reclassifications
	During the year ended December 31, 2014, the Company established several new financial statement line items within the Revenue and Expense sections of the Consolidated Statement of Operations to provide the financial statement user additional details of the components of total revenues and total expenses. Accordingly, comparable amounts for the 11 months ended December 31, 2013 and the year ended January 31, 2013 have been reclassified.
	The Nets operating segment information as of December 31, 2013 and for the 11 months ended December 31, 2013 and the year ended January 31, 2013 has been reclassified and aggregated with the Corporate Activities operating segment disclosures to conform to the current year presentation. Certain other prior year amounts in the accompanying consolidated financial statements have been reclassified to conform to the current year’s presentation.
New Accounting Guidance	New Accounting Guidance
	In July 2013, the Financial Accounting Standards Board (“FASB”) issued an amendment to the accounting guidance on the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or tax credit carryforward exists. This guidance, which clarifies whether the unrecognized tax benefit should be recorded as a liability or reduction of the related deferred tax asset, is effective for fiscal years and interim reporting periods within those years, beginning after December 15, 2013. The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. The adoption of this guidance on January 1, 2014 did not have a material impact on the Company’s consolidated financial statements.
	In April 2014, the FASB issued an amendment to the accounting guidance for reporting discontinued operations and disclosures of disposals of components of an entity. This guidance changes the requirements for reporting discontinued operations and the criteria for determining which disposals can be presented as discontinued operations. This guidance is effective for annual reporting periods beginning on or after December 15, 2014 and interim reporting periods within that annual period. This guidance was early adopted effective April 1, 2014. The adoption of this guidance is expected to substantially reduce the number of property disposals qualifying for discontinued operations as compared to historical results.
	In January 2015, the FASB issued an amendment to the accounting guidance to eliminate the concept of extraordinary items from GAAP. The presentation and disclosure guidance for items that are unusual in nature or occur infrequently has been retained and expanded to include items that are both unusual in nature and infrequently occurring. This guidance is effective for annual reporting periods beginning after December 15, 2015 and interim reporting periods within that annual period. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. This guidance was early adopted effective January 1, 2015 and is not expected to have a material impact on the Company’s consolidated financial statements.
	The following new accounting pronouncements will be adopted on their respective effective dates:
	In May 2014, the FASB issued an amendment to the accounting guidance for revenue from contracts with customers. The core principle of this guidance is an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance defines steps an entity should apply to achieve the core principle. This guidance is effective for annual reporting periods beginning after December 15, 2016 and interim reporting periods within that annual period and allows for both retrospective and modified retrospective methods of adoption. Early adoption is not permitted. The Company is currently in the process of determining the method of adoption and evaluating the impact of adopting this guidance on its consolidated financial statements.
	In August 2014, the FASB issued an amendment to the accounting guidance on disclosure of uncertainties about an entity’s ability to continue as a going concern. This guidance requires management to assess the Company’s ability to continue as a going concern and to provide disclosures under certain circumstances. This guidance is effective for annual reporting periods ending after December 15, 2016 and interim reporting periods thereafter. Early adoption is permitted. The Company does not expect the adoption of this guidance to have a material impact on the Company’s consolidated financial statements.
Acquisition of Rental Properties	Acquisition of Rental Properties
	Upon acquisition of a rental property, the purchase price of the property is allocated to net tangible and identified intangible assets acquired based on fair values. The Company’s most common method of acquisition is acquiring its joint venture partners interest in an individual property or a group of properties. Above-market and below-market in-place lease values for acquired properties are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) the Company’s estimate of the fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining non-cancelable term of the lease. Capitalized above-market lease values are amortized as a reduction of rental revenues (or rental expense for ground leases in which the Company is the lessee) over the remaining non-cancelable terms of the respective leases. Capitalized below-market lease values are amortized as an increase to rental revenues (or rental expense for ground leases in which the Company is the lessee) over the remaining non-cancelable terms of the respective leases, including any fixed-rate renewal periods that are probable of being exercised. For the Company’s below-market lease and in-place lease intangibles remaining at December 31, 2014 and 2013, the Company assumed fixed rate renewals for the in-place leases deemed to be at or near market and includes the assumed renewals in the calculation of intangible asset values and related amortization period.
	Intangible assets also include amounts representing the value of tenant relationships and in-place leases based on the Company’s evaluation of each tenant’s lease and its overall relationship with the respective tenant. The Company estimates the cost to execute leases with terms similar to in-place leases, including leasing commissions, legal expenses and other related expenses. This intangible asset is amortized to expense over the remaining term of the respective lease. The Company’s estimates of value are made using methods similar to those used by independent appraisers or by using independent appraisals. Factors considered by the Company in this analysis include an estimate of the carrying costs during the expected lease-up periods, current market conditions and costs to execute similar leases. In estimating carrying costs, the Company includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, which primarily range from three to twelve months. The Company also considers information obtained about each property as a result of its pre-acquisition due diligence, marketing and leasing activities in estimating the fair value of the tangible and intangible assets acquired. The Company also uses the information obtained as a result of its pre-acquisition due diligence in considering any conditional asset retirement obligations, and when necessary, will record a conditional asset retirement obligation as part of its purchase price.
	When calculating the estimated value to assign to a tenant relationship intangible asset, the Company estimates the likelihood a lessee will execute a lease renewal and other factors relative to the relationship. In determining the likelihood of lease renewal, the Company utilizes a probability weighted model based on many factors. Other qualitative factors related to the relationship the Company considers include, but are not limited to, the nature and extent of the business relationship with the tenant, growth prospects for developing new business with the tenant and the tenant’s credit quality. The value of tenant relationship intangibles is amortized over the remaining initial lease term and expected renewals, but in no event longer than the remaining depreciable life of the building. The value of in-place leases is amortized over the remaining non-cancelable term of the respective leases and any fixed-rate renewal periods deemed probable.
	In the event a tenant terminates its lease, the unamortized portion of each intangible asset, including market rate adjustments, in-place lease values and tenant relationship values, would be charged to expense.
Cash and Equivalents	Cash and Equivalents
	The Company considers all highly liquid instruments purchased with a maturity of three months or less to be cash equivalents. Cash equivalents are stated at cost, which approximates market value.
	The Company maintains operating cash and reserves for replacement balances in financial institutions which, from time to time, may exceed federally insured limits. The Company periodically assesses the financial condition of these institutions and believes the risk of loss is minimal.
	Cash flows associated with items intended as hedges of identifiable transactions or events are classified in the same category as the cash flows from the items being hedged. Cash flows from derivatives not designated as cash flow or fair value hedges are generally classified in the investing section in the Consolidated Statements of Cash Flows.
	Cash flows associated with lease procurement costs are classified as investing activities and consist primarily of lease commissions and related legal fees associated with procuring first generation tenants under long-term lease agreements for office buildings, retail regional malls or specialty retail centers. The Company primarily incurs these costs during the development phase of the project and they are integral to starting construction and ultimately completing the project. Management views these lease procurement costs as part of the initial investment to obtain long-term cash inflow.
Restricted Cash	Restricted Cash
	Restricted cash represents amounts with financial institutions for debt service payments, taxes and insurance, collateral, security deposits, capital replacement, improvement and operating reserves, bond funds, development escrows and construction escrows.
Allowance for Doubtful Accounts and Reserves on Notes Receivable	Allowance for Doubtful Accounts and Reserves on Notes Receivable
	The Company records allowances against its receivables from tenants and other receivables it considers uncollectible. These allowances are based on management’s estimate of receivables that will not be realized from cash receipts in subsequent periods. The Company also maintains an allowance for receivables arising from the straight-lining of rents. This receivable arises from earnings recognized in excess of amounts currently due under lease agreements. Management exercises judgment in establishing these allowances and considers payment history and current credit status in developing these estimates. The allowance against the straight-line rent receivable is based on historical experience with early lease terminations as well as specific review of significant tenants and tenants having known financial difficulties. There is a risk the estimate of the expected activity of current tenants may not accurately reflect future events. If the estimate does not accurately reflect future tenant vacancies, the reserve for straight-line rent receivable may be over or understated by the actual tenant vacancies that occur.
	The Company estimates the allowance for notes receivable based on its assessment of expected future cash flows estimated to be received with consideration given to any collateral of the respective note. If the estimate of expected future cash flows does not accurately reflect actual events, the reserve on notes receivable may be over or understated by the actual cash flows that occur.
Investments in Unconsolidated Entities	Investments in Unconsolidated Entities
	Investments in unconsolidated entities include investments in and advances to unconsolidated entities and cash distributions and losses in excess of investments in unconsolidated entities the Company does not control and/or is not deemed to be the primary beneficiary. The Company accounts for its investments in unconsolidated entities using the equity method of accounting whereby the cost of an investment is adjusted for the Company’s share of income or loss from the date of acquisition, increased for equity contributions made and reduced by distributions received. The income or loss for each unconsolidated entity is allocated in accordance with the provisions of the applicable operating agreements, which may differ from the ownership interest held by each investor. Certain investments in unconsolidated entities’ share of cumulative allocated losses and cash distributions received exceeds its cumulative allocated share of income and equity contributions. As a result, the carrying value of certain investments in unconsolidated entities is negative, based on the Company’s ongoing potential funding requirements. Unconsolidated entities with negative carrying values are included in cash distributions and losses in excess of investments in unconsolidated entities in the Consolidated Balance Sheets. Differences between the Company’s carrying value of its investment in unconsolidated entities and the Company’s underlying equity of such unconsolidated entities are amortized over the respective lives of the underlying assets or liabilities, as applicable. The Company records income or loss in certain unconsolidated entities based on the distribution priorities, which may change upon the achievement of certain return thresholds.
	The Company invests in projects through partnerships and limited liability entities. The Company may provide funding in excess of its legal ownership. These fundings are typically interest-bearing or entitle the Company to a preference on and of such advances on property cash flows and are included in investments in and advances to unconsolidated entities.
Other Assets	Other Assets
	Included in other assets are costs incurred in connection with obtaining financing, which are deferred and amortized over the life of the related debt. Costs incurred in connection with leasing space to tenants are also included in other assets and are deferred and amortized using the straight-line method over the lives of the related leases.
Intangible Assets	Intangible Assets
	Upon an acquisition of a rental property, the Company records intangible assets acquired at their estimated fair value separate and apart from goodwill. The Company amortizes identified intangible assets with finite lives on a straight-line basis over the period the assets are expected to contribute directly or indirectly to the future cash flows of the acquired property. Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate their carrying amount may not be recoverable. An impairment loss is recognized if the carrying amount of an intangible asset is not recoverable and its carrying amount exceeds its estimated fair value.
	In connection with the Company’s military housing projects, intangible assets are recorded based upon the costs associated with acquiring military housing development and management contracts. Intangible assets related to the military housing development contracts are amortized based upon the ratio of development fees earned in relation to overall fee income to be earned throughout the contract period. Intangible assets related to the military housing management contracts are amortized based upon a straight-line basis over the remaining term of the management contracts.
Derivatives Instruments and Hedging Activities	Derivative Instruments and Hedging Activities
	Derivatives are recorded at fair value. Accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and whether it meets the hedge accounting requirements. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of gain or loss recognition on the instrument with the recognition of the change in the fair value of the hedged asset or liability attributable to the hedged risk (in a fair value hedge) or the earnings effect of the hedged forecasted transactions (in a cash flow hedge). The Company may enter into derivative contracts intended to economically hedge certain interest rate risk, even though the contracts do not qualify for or the Company has elected not to apply hedge accounting.
Noncontrolling Interest	Noncontrolling Interest
	Interests held by partners in consolidated entities are reflected in noncontrolling interest, which represents the noncontrolling interests’ share of the underlying net assets of the Company’s consolidated subsidiaries. Noncontrolling interest that is not redeemable is reported in the equity section of the Consolidated Balance Sheets.
	Noncontrolling interests where the Company may be required to repurchase the noncontrolling interest at fair value under a put option or other contractual redemption requirements are reported in the mezzanine section of the Consolidated Balance Sheets as redeemable noncontrolling interest. The Company adjusts the redeemable noncontrolling interest to redemption value (which approximates fair value) at each balance sheet date with changes recognized as an adjustment to additional paid-in capital. In the event the historical cost of the redeemable noncontrolling interest, which represents initial cost, adjusted for contributions, distributions and the allocation of profits or losses, is in excess of estimated fair value, the Company records the redeemable noncontrolling interest at historical cost.
Recognition of Revenues	Recognition of Revenues
	Rental – Lease terms in the retail centers and office buildings generally range from 1 to 30 years, excluding leases with certain anchor tenants, which typically are longer. Minimum rents are recognized on a straight-line basis over the non-cancelable term of the related lease, which include the effects of rent steps and rent abatements under the leases. Overage rents are recognized after sales thresholds have been achieved. Residential lease terms are generally one year.
	Tenant Recoveries – Reimbursements from commercial tenants for common area maintenance, taxes, insurance and other commercial property operating expenses as provided in the lease agreements are recognized in the period the applicable costs are incurred.
	Service and Management Fees – Management, leasing, finance, development and other service fee revenue is recognized in the period in which the services are performed. Revenues and profit on long-term fixed-price contracts are recorded using the percentage-of-completion method. Revenues on reimbursable cost-plus fee contracts are recorded in the amount of the accrued reimbursable costs plus proportionate fees at the time the costs are incurred.
	Parking and Other – Revenues derived from monthly and transient tenant parking and other revenue is recognized in the period the services are performed.
	Arena – The Arena naming rights agreement commenced with the opening of the Arena, has a 20 year term and is subject to certain extension rights. Arena naming rights revenue is recognized on a straight-line basis over the term of the agreement.
	Arena founding partner and sponsor agreements entitle the parties to certain sponsorship, promotional, media, hospitality and other rights and entitlements. These agreements expire at various terms ranging from one to seven years from the Arena opening and revenue is recognized on a straight-line basis over the term of the agreements.
	Arena suite licenses entitle the licensee to the use of a luxury suite in the Arena. The terms of the suite license agreements range from one to seven years. Revenue is recognized on a straight-line basis over the term of the agreements.
	Ticketing fee revenue is based on the Arena’s share of ticket sale fees in accordance with an agreement with Ticketmaster. Revenue from ticketing fees is deferred and recognized upon settlement of the related event.
	Land Sales – Sales of land to residential, commercial and industrial customers, primarily at the Company’s Stapleton project, and sales of commercial and residential outlots adjacent to the Company’s operating property portfolio are recognized at closing or upon completion of all conditions precedent to the sales contract (whichever is later).
	Military Housing – Property management and asset management fees are earned based on a contractual percentage of the annual net rental income and annual operating income, respectively, generated by the military housing privatization projects as defined in the agreements. Additional property management incentive fees are recognized based upon successful completion of criteria set forth in the property management agreements.
	Development fees are earned based on a contractual percentage of the actual development costs incurred. Additional development incentive fees are recognized based upon successful completion of criteria, such as incentives to realize development cost savings, encourage small and local business participation, comply with specified safety standards and other project management incentives as specified in the development agreements.
	Construction management fees are earned based on a contractual percentage of the actual construction costs incurred. Additional construction incentive fees are recognized based upon successful completion of certain criteria as set forth in the construction contracts.
Real Estate Sales and Assets Held for Sale	Real Estate Sales and Assets Held for Sale
	The specific timing of a sale transaction and recognition of profit is measured against various criteria in the real estate sales accounting guidance covering the terms of the transaction and any continuing involvement in the form of management or financial assistance associated with the property. If the sales criteria are not met, the Company defers gain recognition and accounts for the transaction by applying the deposit, finance, installment or cost recovery methods, as appropriate.
	Prior to the adoption of the new accounting guidance on discontinued operations in April 2014, consolidated properties sold or determined to be held for sale were reported as discontinued operations. The determination of when an asset qualifies as held for sale requires significant judgment. Factors the Company considers when evaluating whether an asset qualifies as held for sale include, among other things, whether the potential sale is approved by management, the status of any marketing efforts, interest from prospective buyers, the status of any sale negotiations and the probability of whether the asset will be sold in twelve months. Each potential sale is evaluated based on its separate facts and circumstances.
Recognition of Expenses	Recognition of Expenses
	Property Operating and Management – Expenses incurred at the operating property level and general business unit expenses, including non-capitalizable development costs and management and service company expenses, are recognized as incurred.
	Real Estate Taxes – Real estate taxes on operating properties are recognized over the applicable tax period. Real estate taxes during active development and construction are capitalized as a project cost.
	Ground Rent – Expenses related to ground leases are recognized using the straight-line method over the non-cancelable lease term. Participation payments triggered by defined events within the respective lease agreements such as refinancings, sales or other capital transactions are expensed when incurred. Ground rent during active development and construction is capitalized as a project cost.
	Arena Operating – Operating expenses related to the Arena are recognized as incurred.
	Cost of Land Sales – Cost of land associated with land sales is recognized in the same period as the respective revenue from the sale qualifies for recognition.
	Military Housing – Operating expenses related to the Military Housing are recognized as incurred.
	Corporate General and Administrative – Expenses related to the Company’s Corporate segment are recognized as incurred.
Stock-Based Compensation	Stock-Based Compensation
	Stock-based compensation cost is measured at the date of grant and is based on the fair value of the equity award. The fair value of stock options is computed using the Black-Scholes option pricing model, which incorporates assumptions for risk-free rate, expected volatility, dividend yield, and expected life of the options. The fair value of restricted stock is equal to the closing price of the stock on the date of grant. The fair value cost of stock options and restricted stock, as adjusted for estimated forfeitures, is recognized over the requisite service period of the grantee using the straight-line attribution method. Cost recognition is accelerated if the grantee is retirement-eligible (as defined in the 1994 Stock Plan, as amended) or becomes retirement-eligible before the end of the nominal vesting period. The cost is recognized immediately if the grantee is retirement-eligible at the date of grant or on a straight-line basis over the period ending with the first anniversary from the date of grant when the individual becomes retirement-eligible. The fair value of performance shares that do not have a market condition is equal to the closing price of the underlying stock on the date of grant. The compensation cost is recognized on a straight-line basis over the requisite service period if it is probable the performance goals will be achieved. The fair value of performance shares that have a market condition is computed using a Monte Carlo simulation. The compensation cost is recognized over the requisite service period if the requisite service is rendered, even if the market condition is never satisfied.
	Cash flows resulting from the tax benefits from tax deductions in excess of the compensation cost recognized for those options or shares (excess tax benefits) are classified as financing cash flows in the Consolidated Statements of Cash Flows. The Company records excess tax benefits only if the excess tax deductions reduce taxes payable computed on a with-and-without basis.
Depreciation and Amortization	Depreciation and Amortization
	Depreciation and amortization is generally computed on a straight-line method over the estimated useful life of the asset. The estimated useful lives of buildings (other than the Arena) and certain first generation tenant allowances considered by management as a component of the building are 40 to 50 years. The estimated useful life of the Arena is 34.5 years, reflecting the ground leases on which the Arena was built. Subsequent tenant improvements and those first generation tenant allowances not considered a component of the building are amortized over the lesser of the remaining useful life of the asset or the term of the tenant’s lease. This estimated life is based on the length of time the asset is expected to generate positive operating cash flows. Actual events and circumstances can cause the life of the building and tenant improvement to be different than the estimates made. Additionally, lease terminations can affect the economic life of the tenant improvements.
Capitalization	Capitalization
	Major improvements and tenant improvements that are the Company’s assets are capitalized and expensed through depreciation charges. Tenant improvements qualifying as lease inducements are capitalized into other assets and amortized as a reduction of rental revenues over the term of the tenant’s lease. Repairs, maintenance and minor improvements are expensed as incurred.
	A variety of costs are incurred in the development and leasing of properties. After determination is made to capitalize a cost, it is allocated to the specific component of a project that is benefited. Determination of when a development project is substantially complete and capitalization must cease involves judgment. The Company’s capitalization policy on development properties is based on accounting guidance for the capitalization of interest cost and accounting guidance for costs and the initial rental operations of real estate properties. The costs of land and buildings under development include specifically identifiable costs. The capitalized costs include pre-construction costs essential to the development of the property, development costs, construction costs, interest costs, real estate taxes, salaries and related costs and other costs incurred during the period of development. The Company considers a construction project as substantially complete and held available for occupancy upon the completion of tenant improvements, but no later than one year from cessation of major construction activity. The Company ceases capitalization on any portion substantially completed and occupied or held available for occupancy, and capitalizes only those costs associated with the portion under construction. Costs and accumulated depreciation applicable to assets retired or sold are removed from the respective accounts and any resulting gains or losses are reported in the Consolidated Statements of Operations.
Write-offs of Abandoned Development Projects and Demolition Costs	Write-offs of Abandoned Development Projects and Demolition Costs
	On a quarterly basis, the Company reviews each project under development to determine whether it is probable the project will be developed. If management determines the project will not be developed, its project costs and other related expenses are written off as an abandoned development project cost. The Company abandons projects under development for a number of reasons, including, but not limited to, changes in local market conditions, increases in construction or financing costs or third party challenges related to entitlements or public financing.
Impairment of Real Estate	Impairment of Real Estate
	The Company reviews its real estate for impairment whenever events or changes indicate its carrying value may not be recoverable. Impairment indicators include, but are not limited to, significant decreases in property net operating income, significant decreases in occupancy rates, the physical condition of the property and general economic conditions. A property’s value is impaired if the aggregate future cash flows (undiscounted and without interest charges) to be generated are less than the carrying value of the property. In addition, the undiscounted cash flows may consider a probability-weighted cash flow estimation approach when alternative courses of action to recover the carrying amount of a long-lived asset are under consideration or a range is estimated at the balance sheet date. Significant estimates are made in the determination of future undiscounted cash flows including future net operating income, estimated hold periods, risk of foreclosure and estimated cash proceeds received upon disposition of the asset. To the extent an impairment has occurred, the loss will be measured as the excess of the carrying amount of the property over the estimated fair value of the property. Determining fair value of real estate involves significant judgments and estimates including timing and amounts of expected cash flows, discount rates, capitalization rates and comparable sales data, which are considered Level 3 inputs. Changes to these estimates could affect whether or not an impairment charge would be required and/or the amount of impairment charges recognized.
Impairment of Unconsolidated Entities	Impairment of Unconsolidated Entities
	The Company reviews its portfolio of unconsolidated entities for other-than-temporary impairments whenever events or changes indicate its carrying value in the investments may be in excess of fair value. A loss in value of an equity method investment which is other-than-temporary is recognized as an impairment of unconsolidated entities. This determination is based upon the length of time elapsed, severity of decline, possible recovery period and other relevant facts. Determining fair value of a real estate investment and whether or not a loss is other-than-temporary involves significant judgments and estimates. Examples of these estimates include timing and amounts of expected cash flows, discount rates, capitalization rates and comparable sales data, which are considered Level 3 inputs. Changes to these estimates could affect whether or not an impairment charge would be required and/or the amount of impairment charges recognized.
Historic and New Market Tax Credit Entities	Historic and New Market Tax Credit Entities
	The Company has investments in properties that have received, or the Company believes are entitled to receive, historic preservation tax credits on qualifying expenditures under Internal Revenue Code (“IRC”) section 47 and new market tax credits on qualifying investments in designated community development entities (“CDEs”) under IRC section 45D, as well as various state credit programs, including participation in the New York State Brownfield Tax Credit Program, which entitles the members to tax credits based on qualified expenditures at the time those qualified expenditures are placed in service. The Company typically enters into these investments with sophisticated financial investors. In exchange for the financial investors’ initial contribution into the investment, the financial investor is entitled to substantially all of the benefits derived from the tax credit. Typically, these arrangements have put/call provisions (which range up to seven years) whereby the Company may be obligated (or entitled) to repurchase the financial investors’ interest. The Company has consolidated each of these entities in its consolidated financial statements and has included these investor contributions in accounts payable, accrued expenses and other liabilities.
	The Company guarantees to the financial investor that in the event of a subsequent recapture by a taxing authority due to the Company’s noncompliance with applicable tax credit guidelines, it will indemnify the financial investor for any recaptured tax credits. The Company initially records a liability for the cash received from the financial investor. The Company generally records income upon completion and certification of the qualifying development expenditures for historic preservation tax credits and upon certification of the qualifying investments in designated CDEs for new market tax credits, resulting in an adjustment of the liability at each balance sheet date to the amount that would be paid to the financial investor based upon the tax credit compliance regulations, which range from 0 to 7 years. Income related to the sale of tax credits is recorded in interest and other income.
Income Taxes	Income Taxes
	Deferred tax assets and liabilities are recorded to reflect the expected tax consequences on future years attributable to temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities. The Company has recognized the benefit of its tax loss carryforward, which it expects to use as a reduction of the deferred tax expense. The Company records valuation allowances against deferred tax assets if it is more likely than not a portion or all of the deferred tax asset will not be realized. The Company’s financial statements reflect the expected future tax consequences of a tax position if that tax position is more likely than not of being sustained upon examination, presuming the taxing authorities have full knowledge of the position and all relevant facts. The Company records interest and penalties related to uncertain income tax positions as a component of income tax expense.
Earnings Per Share	Earnings Per Share
	The Company’s restricted stock is considered a participating security pursuant to the two-class method for computing basic earnings per share (“EPS”). The Class A Common Units issued in exchange for Bruce C. Ratner’s noncontrolling interests in the Forest City Ratner Company portfolio in November 2006, which are reflected as noncontrolling interests in the Consolidated Balance Sheets, are considered convertible participating securities as they are entitled to participate in dividends paid to the Company’s common shareholders. The Class A Common Units are included in the computation of basic EPS using the two-class method and are included in the computation of diluted EPS using the if-converted method. The Class A common stock issuable in connection with a put or conversion of the Puttable Equity-Linked Senior Notes due 2014 (which were redeemed during 2013), Convertible Senior Notes due 2016, Convertible Senior Notes due 2018, Convertible Senior Notes due 2020 and Series A Cumulative Perpetual Convertible Preferred Stock (which were redeemed during 2013) are included in the computation of diluted EPS using the if-converted method.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Components of Accumulated Other Comprehensive Income (Loss)	The following table summarizes the components of accumulated other comprehensive income (loss) (“accumulated OCI”):
		December 31,			December 31,			January 31,
		2014			2013			2013
		(in thousands)
	Unrealized losses on securities	$	—		$	—		$	340
	Unrealized (gains) losses on foreign currency translation	137			189			(69		)
	Unrealized losses on interest rate contracts (1)	96,084			125,059			168,497
		96,221			125,248			168,768
	Income tax benefit	(37,281		)	(48,517		)	(65,382		)
	Noncontrolling interest	(94		)	(149		)	(183		)
	Accumulated Other Comprehensive Loss	$	58,846		$	76,582		$	103,203
	-1	Included in the amounts as of December 31, 2014, December 31, 2013 and January 31, 2013 are $73,536, $97,360 and $126,506, respectively, of unrealized loss on an interest rate swap associated with New York Times office building on its nonrecourse mortgage debt with a notional amount of $640,000. This swap effectively fixes the mortgage at an all-in lender interest rate of 6.40% and expires in September 2017.
Schedule of Changes in Accumulated Other Comprehensive Income	The following table summarizes the changes, net of tax and noncontrolling interest, of accumulated OCI by component:
		Securities			Foreign Currency Translation			Interest Rate Contracts			Total
		(in thousands)
	Balance, February 1, 2013	$	(208	)	$	42		$	(103,037	)	$	(103,203	)
	OCI before reclassifications	430			(158		)	22,707			22,979
	(Gain) loss reclassified from accumulated OCI	(222		)	—			3,864			3,642
	Total other comprehensive income (loss)	208			(158		)	26,571			26,621
	Balance, January 1, 2014	$	—		$	(116	)	$	(76,466	)	$	(76,582	)
	OCI before reclassifications	—			32			13,898			13,930
	Loss reclassified from accumulated OCI	—			—			3,806			3,806
	Total other comprehensive income	—			32			17,704			17,736
	Balance, December 31, 2014	$	—		$	(84	)	$	(58,762	)	$	(58,846	)
Reclassification out of Accumulated Other Comprehensive Income	The following table summarizes (gains) losses reclassified from accumulated OCI and their location on the Consolidated Statements of Operations:
	Accumulated OCI Components	(Gain) Loss Reclassified from Accumulated OCI				Location on Consolidated Statements of Operations
		(in thousands)
	Year Ended December 31, 2014
	Interest rate contracts	2,523				Interest expense
	Interest rate contracts	3,666				Discontinued operations
	Interest rate contracts	59				Equity in earnings
		6,248				Total before income tax and noncontrolling interest
		(2,412		)		Income tax benefit
		(30		)		Noncontrolling interest
		$	3,806			Loss reclassified from accumulated OCI
	11 Months Ended December 31, 2013
	Interest rate contracts	6,258				Interest expense
	Interest rate contracts	82				Equity in earnings
		6,340				Total before income tax and noncontrolling interest
		(2,460		)		Income tax benefit
		(16		)		Noncontrolling interest
		$	3,864			Loss reclassified from accumulated OCI
Schedule of Transition Period Comparative Data	The following table presents certain financial information for the 11 months ended December 31, 2013 and 2012, for comparability purposes.
		11 Months Ended December 31,
		2013			2012
					(Unaudited)
		(in thousands)
	Revenues	$	998,272		$	963,325
	Expenses
	Operating expenses	665,818			600,134
	Depreciation and amortization	273,054			189,168
	Write-offs of abandoned development projects and demolition costs	40,414			14,029
	Impairment of real estate	421,361			30,660
	Net loss on land held for divestiture activity	7,382			4,457
	Total expenses	1,408,029			838,448
	Operating income (loss)	(409,757		)	124,877
	Interest and other income	52,283			42,245
	Net gain on disposition of partial interest in rental properties	496,092			—
	Net gain on change in control of interests	2,762			8,351
	Interest expense	(285,042		)	(228,980		)
	Amortization of mortgage procurement costs	(8,375		)	(9,987		)
	Gain on extinguishment of debt	4,549			6,807
	Loss before income taxes	(147,488		)	(56,687		)
	Income tax expense (benefit)	12,266			(12,430		)
	Earnings from unconsolidated entities, including impairment, gross of tax	107,825			84,543
	Net gain (loss) on land held for divestiture activity, gross of tax	1,338			(42,606		)
		109,163			41,937
	Loss from continuing operations	(50,591		)	(2,320		)
	Discontinued operations, net of tax	(20,199		)	59,410
	Net earnings (loss)	(70,790		)	57,090
	Noncontrolling interests	65,483			(5,635		)
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	(5,307		)	51,455
	Preferred dividends and inducements of preferred stock conversions	(185		)	(32,129		)
	Net earnings (loss) attributable to common shareholders	$	(5,492	)	$	19,326
Supplemental Non-Cash Disclosures	The following table represents a summary of non-cash transactions including, but not limited to, dispositions of operating properties whereby the nonrecourse mortgage debt is assumed by the buyer, exchange of Units or senior debt for Class A common stock, conversion of Series A preferred stock to Class A common stock, changes in consolidation methods due to the occurrence of triggering events including, but not limited to, disposition of a partial interest in rental properties or development projects or acquisition of a partner’s interest, change in construction payables, change in the fair market value of redeemable noncontrolling interest and capitalization of stock-based compensation granted to employees directly involved with the development and construction of real estate.
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Investing activities
	Decrease in projects under construction and development	$	313,480		$	87,857		$	33,662
	(Increase) decrease in completed rental properties	(368,588		)	842,261			170,033
	(Increase) decrease in restricted cash	(1,272		)	4,326			14,463
	(Increase) decrease in investments in and advances to unconsolidated entities	(202,922		)	(32,078		)	21,826
	Total effect on investing activities	$	(259,302	)	$	902,366		$	239,984
	Financing activities
	Increase in accounts payable, accrued expenses and other liabilities	$	5,552		$	—		$	—
	Decrease in nonrecourse mortgage debt and notes payable	(153,345		)	(903,085		)	(215,008		)
	Decrease in convertible senior debt	—			(218,675		)	(6,049		)
	Decrease in restricted cash	—			—			8,208
	Decrease in preferred stock	—			(5,489		)	(209,448		)
	Increase in Class A common stock	225			4,680			4,617
	Increase in additional paid-in capital	111,150			241,268			200,448
	Increase in treasury stock	—			(12,868		)	—
	Increase (decrease) in redeemable noncontrolling interest	28,390			(50,546		)	8,424
	Increase in noncontrolling interest	44,876			31,702			558
	Total effect on financing activities	$	36,848		$	(913,013	)	$	(208,250	)

Notes_and_Accounts_Receivable_1

Notes and Accounts Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Components of Notes and Accounts Receivable	The components of notes and accounts receivable, net are as follows:
		December 31, 2014			December 31, 2013
		(dollars in thousands)
	Straight-line rent from tenants	$	131,887		$	135,370
	Military Housing, primarily reimbursable construction costs	27,024			29,771
	Stapleton advances	150,111			145,917
	Tenant receivables	16,298			20,008
	Notes receivable	34,922			38,225
	Other	69,567			101,411
		429,809			470,702
	Allowance for doubtful accounts	(10,771		)	(15,141		)
	Notes and Accounts Receivable, Net	$	419,038		$	455,561
	Weighted average interest rate on notes receivable	6.81		%	6.47		%
	Notes receivable due within one year	$	4,548		$	8,534

Investments_in_Unconsolidated_1

Investments in Unconsolidated Entities (Tables)	12 Months Ended
	Dec. 31, 2014
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Reconciliation of Members' and Partners' Equity to the Company's Carrying Value	The following is a reconciliation of members’ and partners’ equity to the Company’s carrying value:
		December 31, 2014			December 31, 2013
		(in thousands)
	Total members’ and partners’ equity	$	1,234,612		$	798,590
	Equity of other members and partners	1,079,695			777,646
	Company’s net investment in unconsolidated entities	154,917			20,944
	Basis differences (1)	238,606			137,259
	Advances to and on behalf of affiliates	15,450			32,119
	Total Investments in Unconsolidated Entities, net	$	408,973		$	190,322
	Assets - Investments in and advances to unconsolidated entities	$	620,466		$	447,165
	Liabilities - Cash distributions and losses in excess of investments in unconsolidated entities	(211,493		)	(256,843		)
	Total Investments in Unconsolidated Entities, net	$	408,973		$	190,322
	-1	Represents the aggregate difference between the Company’s historical cost basis and the basis reflected at the equity method venture level, which is typically amortized over the life of the related assets or liabilities. Basis differences relate to certain acquisition, transaction and other costs, as well as other-than-temporary impairments not reflected in the net assets at the equity method venture level.
Summarized Financial Information for the Equity Method Investments	Summarized financial information for the equity method investments is as follows:
		(Combined 100%)
		December 31, 2014			December 31, 2013
		(in thousands)
	Balance Sheets:
	Real Estate
	Completed rental properties	$	7,982,583		$	8,142,158
	Projects under construction and development	840,797			205,465
	Land inventory	114,301			120,592
	Total Real Estate	8,937,681			8,468,215
	Less accumulated depreciation	(1,716,329		)	(1,676,354		)
	Real Estate, net	7,221,352			6,791,861
	Cash and equivalents	211,533			156,491
	Restricted cash - military housing bond funds	161,460			116,372
	Other restricted cash	381,190			316,315
	Other assets	1,042,420			1,074,972
	Total Assets	$	9,017,955		$	8,456,011
	Mortgage debt and notes payable, nonrecourse	$	7,176,088		$	7,113,515
	Other liabilities	607,255			543,906
	Members’ and partners’ equity	1,234,612			798,590
	Total Liabilities and Members’ and Partners’ Equity	$	9,017,955		$	8,456,011
		(Combined 100%)
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Operations:
	Revenues	$	1,331,875		$	1,160,230		$	1,082,073
	Operating expenses	(791,964		)	(669,548		)	(605,940		)
	Depreciation and amortization	(253,081		)	(207,731		)	(205,002		)
	Net gain (loss) on land held for divestiture activity	—			2,742			(102		)
	Interest and other income	22,693			14,797			17,676
	Net gain on disposition of full or partial interest in rental properties	36,356			—			131,027
	Interest expense including extinguishment of debt	(358,946		)	(311,283		)	(320,566		)
	Earnings (loss) from continuing operations	$	(13,067	)	$	(10,793	)	$	99,166
	Discontinued operations:
	Operating earnings from rental properties	215			4,623			5,387
	Gain on disposition of rental properties	—			68,311			—
	Discontinued operations subtotal	215			72,934			5,387
	Net earnings (loss) (pre-tax)	$	(12,852	)	$	62,141		$	104,553
	Company’s portion of net earnings (loss) (pre-tax)	55,288			75,014			69,320
	Impairment of investments in unconsolidated entities	(3,124		)	—			(390		)
	Impairment of investments in unconsolidated entities with land held for divestiture	—			—			(40,406		)
	Net gain on disposition of full or partial interest in equity method investments	34,744			34,149			16,107
	Net earnings (pre-tax) from unconsolidated entities	$	86,908		$	109,163		$	44,631
Summary of the Gain (Loss) on the Disposition of Unconsolidated Entities	Gains and losses on the disposition or partial disposition of unconsolidated entities are included in equity in earnings and are summarized as follows:
			Year Ended			11 Months Ended			Year Ended
			December 31, 2014			December 31, 2013			January 31, 2013
			(in thousands)
	Net gain on disposition of full or partial interest in rental properties:
	Golden Gate (Specialty Retail Center)	Mayfield Heights, Ohio	$	33,881		$	—		$	—
	Liberty Center (Office Building)	Pittsburgh, Pennsylvania	2,475			2,829			—
	Westin Convention Center (Hotel)	Pittsburgh, Pennsylvania	—			65,482			—
	8 Spruce Street (Apartment Community)	Manhattan, New York	—			—			131,027
	Total gain on disposition of full or partial interest in rental properties		$	36,356		$	68,311		$	131,027
	Company’s portion of gain on disposition of full or partial interest in rental properties		$	17,677		$	34,281		$	34,959
	Net gain (loss) on disposition of full or partial interest in equity method investments:
	Apartment Communities:
	Westwood Reserve	Tampa, Florida	$	8,904		$	—		$	—
	Legacy Crossroads	Cary, North Carolina	6,216			—			—
	Colonial Grand	Tampa, Florida	4,904			—			—
	Legacy Arboretum	Charlotte, North Carolina	3,257			—			—
	Woodgate / Evergreen Farms	Olmsted Township, Ohio	2,346			—			—
	Barrington Place	Raleigh, North Carolina	1,515			—			—
	Regional Malls:
	Mall at Stonecrest	Atlanta, Georgia	7,952			—			—
	Charleston Town Center	Charleston, West Virginia	—			27,080			—
	Specialty Retail Centers:
	Marketplace at Riverpark	Fresno, California	—			8,579			—
	Plaza at Robinson Town Center	Pittsburgh, Pennsylvania	—			(1,510		)	—
	Village at Gulfstream Park	Hallandale Beach, Florida	—			—			14,479
	Chagrin Plaza I & II (Office Buildings)	Beachwood, Ohio	—			—			1,628
	Other		(350		)	—			—
	Total gain on disposition of full or partial interest in equity method investments		$	34,744		$	34,149		$	16,107

Other_Assets_Tables

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Components of Other Assets
		December 31, 2014		December 31, 2013
		(in thousands)
	Lease procurement costs, net	$	101,773	$	104,733
	Prepaid expenses and other deferred costs, net	112,484		142,465
	Intangible assets, net	123,778		105,364
	Mortgage procurement costs, net	71,331		62,754
	Other Assets	$	409,366	$	415,316
Schedule of Future Amortization Expense Related to Intangible Assets	The estimated amortization expense related to intangible assets for the next five years is as follows:
	Years Ending December 31,
		(in thousands)
	2015	$	7,526
	2016	6,786
	2017	6,510
	2018	6,811
	2019	3,165

Mortgage_Debt_and_Notes_Payabl1

Mortgage Debt and Notes Payable, Nonrecourse (Tables)	12 Months Ended
	Dec. 31, 2014
Mortgage Debt and Notes Payable, Nonrecourse [Abstract]
Schedule of Mortgage Debt and Notes Payable, Nonrecourse	Nonrecourse mortgage debt and notes payable, including balances associated with development project held for sale, which is collateralized solely by completed rental properties, projects under construction and development and undeveloped land, was as follows:
	December 31, 2014	Operating		Development		Total		Total Weighted Average Rate
		Properties		Projects
		(dollars in thousands)
	Fixed	$	2,234,801	$	58,790	$	2,293,591	5.57	%
	Variable
	Taxable	1,327,961		19,804		1,347,765		4.85	%
	Tax-Exempt	551,845		45,000		596,845		1.45	%
		$	4,114,607	$	123,594	$	4,238,201	4.76	%
	December 31, 2013	Operating		Development		Total		Total Weighted Average Rate
		Properties		Projects
		(dollars in thousands)
	Fixed	$	2,286,555	$	294,782	$	2,581,337	5.28	%
	Variable
	Taxable	1,381,225		51,500		1,432,725		4.81	%
	Tax-Exempt	511,889		53,555		565,444		1.47	%
		$	4,179,669	$	399,837	$	4,579,506	4.66	%
Composition of Mortgage Debt and Notes Payable, Nonrecourse Maturities	The following table summarizes the mortgage debt and notes payable, nonrecourse maturities, as of December 31, 2014:
	Years Ending December 31,	Total
		Maturities
		(in thousands)
	2015	$	508,376
	2016	142,979
	2017	1,178,626
	2018	271,688
	2019	300,338
	Thereafter	1,836,194
	Total	$	4,238,201

Revolving_Credit_Facility_Tabl

Revolving Credit Facility (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Available Credit on the Credit Facility	The following table summarizes the available credit on the Credit Facility:
		December 31, 2014		December 31, 2013
		(in thousands)
	Maximum borrowings	$	500,000	$	500,000
	Less outstanding balances:
	Borrowings	—		—
	Letters of credit	85,768		59,760
	Surety bonds	—		—
	Available credit	$	414,232	$	440,240

Convertible_Senior_Debt_Tables

Convertible Senior Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Convertible Senior Debt	The following table summarizes the Company’s convertible senior debt:
		December 31, 2014			December 31, 2013
		(in thousands)
	5.000% Notes due 2016	$	50,000		$	50,000
	4.250% Notes due 2018	350,000			350,000
	3.625% Notes due 2020	300,000			300,000
	Total	$	700,000		$	700,000
Summary of Interest Incurred, Capitalized and Paid	The following table summarizes interest incurred, capitalized and paid on all forms of indebtedness (included in Notes E, F and G):
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Interest incurred	$	258,816		$	301,735		$	349,418
	Interest capitalized	(24,411		)	(16,693		)	(96,094		)
	Net interest expense	$	234,405		$	285,042		$	253,324
	Interest incurred from discontinued operations	$	5,538		$	12,015		$	23,167
	Cash paid for interest (net of amount capitalized)	$	235,373		$	292,692		$	291,509

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments	The following table presents the fair values and location in the Consolidated Balance Sheets of all derivative instruments:
		Fair Value of Derivative Instruments
		December 31, 2014
		Asset Derivatives						Liability Derivatives
		(included in Other Assets)						(included in Accounts Payable, Accrued Expenses and Other Liabilities)
		Current		Fair Value				Current			Fair Value
		Notional						Notional
		(in thousands)
	Derivatives Designated as Hedging Instruments
	Interest rate caps	$	330,000	$	114			$	—		$	—
	Interest rate swaps	—		—				869,154			75,281
	TROR	149,200		6,379				217,785			11,983
	Total	$	479,200	$	6,493			$	1,086,939		$	87,264
	Derivatives Not Designated as Hedging Instruments
	Interest rate caps	$	205,522	$	12			$	—		$	—
	TROR	101,410		1,857				38,425			15,098
	Total	$	306,932	$	1,869			$	38,425		$	15,098
		December 31, 2013
	Derivatives Designated as Hedging Instruments
	Interest rate swaps	$	—	$	—			$	961,359		$	97,858
	TROR	18,970		903				339,785			9,772
	Total	$	18,970	$	903			$	1,301,144		$	107,630
	Derivatives Not Designated as Hedging Instruments
	Interest rate caps	$	447,532	$	155			$	—		$	—
	TROR	—		—				39,052			15,477
	Total	$	447,532	$	155			$	39,052		$	15,477
Gains and Losses Related to Derivative Instruments Designated as Cash Flow Hedges Included in Accumulated OCI	The following tables present the impact of gains and losses related to derivative instruments designated as cash flow hedges included in the accumulated OCI section of the Consolidated Balance Sheets and in equity in earnings and interest expense in the Consolidated Statements of Operations:
					Gain (Loss) Reclassified from
					Accumulated OCI
	Derivatives Designated as	Gain (Loss) Recognized in OCI			Location on Consolidated Statements of Operations	Effective			Ineffective
	Cash Flow Hedging Instruments	(Effective Portion)				Amount			Amount
		(in thousands)
	Year Ended December 31, 2014
	Interest rate caps and interest rate swaps	$	22,733		Interest expense	$	(2,516	)	$	(7	)
	Interest rate swap	—			Discontinued operations	—			(3,666		)
	Interest rate swaps	—			Equity in earnings	(59		)	—
	Total	$	22,733			$	(2,575	)	$	(3,673	)
	11 Months Ended December 31, 2013
	Interest rate swaps	$	37,094		Interest expense	$	(3,295	)	$	(2,963	)
	Interest rate caps and interest rate swaps	—			Equity in earnings	(86		)	4
	Total	$	37,094			$	(3,381	)	$	(2,959	)
	Year Ended January 31, 2013
	Interest rate caps, interest rate swaps and Treasury options	$	21,601		Interest expense	$	(3,916	)	$	—
	Interest rate caps, interest rate swaps and Treasury options	—			Equity in earnings	(342		)	14
	Total	$	21,601			$	(4,258	)	$	14
Impact of Gains and Losses Related to Derivative Instruments Not Designated as Cash Flow Hedges	The following table presents the impact of gains and losses related to derivatives instruments not designated as cash flow hedges in the Consolidated Statements of Operations:
		Net Gain (Loss) Recognized
		Year Ended		11 Months Ended			Year Ended
		December 31, 2014		December 31, 2013			January 31, 2013
		(in thousands)
	Derivatives Designated as Fair Value Hedging Instruments
	TROR (1)	$	3,265	$	1,081		$	(770	)
	Derivatives Not Designated as Hedging Instruments
	Interest rate caps and interest rate swaps	$	17	$	(319	)	$	(922	)
	TROR	2,236		(1,091		)	12,568
	Total	$	2,253	$	(1,410	)	$	11,646
	-1	The net gain (loss) recognized in interest expense from the change in fair value of the underlying TROR borrowings was $(3,265), $(1,081) and $770 for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively, offsetting the gain (loss) recognized on the TROR.
Collateral Posted for Derivatives in Liability Positions	The following table presents information about collateral posted for derivatives in liability positions as of December 31, 2014:
		Collateral Information
		Notional Amount		Fair Value Prior to Nonperformance Risk			Nonperformance Risk			Collateral Posted			Nature of Collateral	Credit Risk Contingent Feature
		(in thousands)
	Property Specific Swaps	$	669,154	$	79,126		$	(3,846	)	$	—		Mortgage liens	None
	TROR	256,210		27,023			58			52,811			Restricted cash, notes receivable, letters of credit	None
	Corporate Aggregate Swaps	200,000		1			—			170			Restricted cash	Credit rating
	Totals	$	1,125,364	$	106,150		$	(3,788	)	$	52,981

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities and Redeemable Noncontrolling Interest Measured on a Recurring Basis	The following table presents information about financial assets and liabilities and redeemable noncontrolling interest measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value:
		Fair Value Measurements
		December 31, 2014
		Level 1			Level 2			Level 3			Total
		(in thousands)
	Interest rate caps	$	—		$	126		$	—		$	126
	Interest rate swaps (liabilities)	—			(1,745		)	(73,536		)	(75,281		)
	TROR (assets)	—			—			8,236			8,236
	TROR (liabilities)	—			—			(27,081		)	(27,081		)
	Fair value adjustment to the borrowings subject to TROR	—			—			5,604			5,604
	Redeemable noncontrolling interest (1)	—			—			(183,038		)	(183,038		)
	Total	$	—		$	(1,619	)	$	(269,815	)	$	(271,434	)
		December 31, 2013
		Level 1			Level 2			Level 3			Total
		(in thousands)
	Interest rate caps	$	—		$	155		$	—		$	155
	Interest rate swaps (liabilities)	—			(498		)	(97,360		)	(97,858		)
	TROR (assets)	—			—			903			903
	TROR (liabilities)	—			—			(25,249		)	(25,249		)
	Fair value adjustment to the borrowings subject to TROR	—			—			8,869			8,869
	Redeemable noncontrolling interest	—			—			(171,743		)	(171,743		)
	Total	$	—		$	(343	)	$	(284,580	)	$	(284,923	)
	-1	As of December 31, 2014, the redeemable noncontrolling interest is recorded at historical cost.
Reconciliation of Financial Assets and Liabilities and Redeemable Noncontrolling Interest Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs	The following table presents a reconciliation of all financial assets and liabilities and redeemable noncontrolling interest measured at fair value on a recurring basis using significant unobservable inputs (Level 3):
		Fair Value Measurements
		Redeemable				Interest Rate				Net			Fair value			Total			Total
		Noncontrolling				Swaps				TROR			adjustment			TROR
		Interest											to the borrowings			Related
													subject to TROR
		(in thousands)
	Balance, February 1, 2013	$	(239,136	)		$	(126,506	)		$	(5,136	)	$	9,950		$	4,814		$	(360,828	)
	Loss attributable to redeemable noncontrolling interest	16,847				—				—			—			—			16,847
	Total realized and unrealized gains (losses):
	Included in earnings	—				—				(10		)	(1,081		)	(1,091		)	(1,091		)
	Included in other comprehensive income	—				29,146				—			—			—			29,146
	Included in additional paid-in capital	50,546				—				—			—			—			50,546
	Settlement	—				—				(19,200		)	—			(19,200		)	(19,200		)
	Balance, December 31, 2013	$	(171,743	)		$	(97,360	)		$	(24,346	)	$	8,869		$	(15,477	)	$	(284,580	)
	Loss attributable to redeemable noncontrolling interest	17,095				—				—			—			—			17,095
	Total realized and unrealized gains (losses):
	Included in earnings	—				—				5,501			(3,265		)	2,236			2,236
	Included in other comprehensive income	—				23,824				—			—			—			23,824
	Included in additional paid-in capital	(28,390		)		—				—			—			—			(28,390		)
	Balance, December 31, 2014	$	(183,038	)		$	(73,536	)		$	(18,845	)	$	5,604		$	(13,241	)	$	(269,815	)
Significant Unobservable Inputs Used to Estimate Fair Value of Financial Instruments	The following table presents quantitative information about the significant unobservable inputs used to estimate the fair value of financial instruments measured on a recurring basis as of December 31, 2014:
		Quantitative Information about Level 3 Fair Value Measurements
		Fair Value December 31, 2014			Valuation	Unobservable	Input Values
					Technique	Input
		(in thousands)
	Credit valuation adjustment of interest rate swap	$	3,740		Potential future exposure	Credit spread	4.00%
	TROR	$	(18,845	)	Third party bond pricing	Bond valuation	75.59 - 109.71
	Fair value adjustment to the borrowings subject to TROR	$	5,604		Third party bond pricing	Bond valuation	75.59 - 109.71
Schedule of Fair Value of Nonrecourse Mortgage Debt and Notes Payable, Bank Revolving Credit Facility and Senior and Subordinated Debt	The following table summarizes the fair value of nonrecourse mortgage debt and notes payable (exclusive of the fair value of derivatives), revolving credit facility, convertible senior debt and nonrecourse mortgage debt of development property held for sale:
		December 31, 2014							December 31, 2013
		Carrying Value			Fair Value				Carrying Value			Fair Value
		(in thousands)
	Fixed Rate Debt	$	2,993,591		$	3,421,373			$	3,281,337		$	3,488,406
	Variable Rate Debt	1,944,610			1,924,823				1,998,169			1,954,136
	Total	$	4,938,201		$	5,346,196			$	5,279,506		$	5,442,542

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Completion Guarantees	The Company currently provides the following completion guarantees on its completed projects and projects under construction and development (including unconsolidated properties):
		Total Costs		Percent
				Completed (Unaudited)
		(dollars in thousands)
	At December 31, 2014
	Openings and acquisitions	$	1,548,943	97	%
	Under construction	1,185,190		30	%
	Total Real Estate	$	2,734,133	68	%

Leases_Tables

Leases (Tables)	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Minimum Future Rental Income	The following table summarizes the minimum future rental income to be received on non-cancelable operating leases of commercial properties that generally extend for periods of more than one year:
	Years Ending December 31,
		(in thousands)
	2015	$	393,356
	2016	368,671
	2017	346,959
	2018	319,628
	2019	270,114
	Later years	1,367,021
		$	3,065,749
Minimum Fixed Rental Payments Under Long-term Leases	Minimum fixed rental payments under long-term leases (over one year) in effect at December 31, 2014 are as follows:
	Years Ending December 31,
		(in thousands)
	2015	$	11,632
	2016	10,899
	2017	5,963
	2018	5,637
	2019	5,566
	Later years	142,259
		$	181,956
Rent Expense	The following table summarizes rent expense (in thousands):
	Year Ended December 31, 2014	$	11,013
	11 Months Ended December 31, 2013	$	8,243
	Year Ended January 31, 2013	$	9,136

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Stock-Based Compensation Costs and Related Deferred Income Tax Benefit	tock-based compensation costs and related deferred income tax benefit recognized in the financial statements are as follows:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Stock option costs	$	3,381		$	3,051		$	3,101
	Restricted stock costs	12,279			10,672			10,324
	Performance share costs	4,013			2,474			1,326
	Total stock-based compensation costs	19,673			16,197			14,751
	Less amount capitalized into qualifying real estate projects	(5,944		)	(5,826		)	(5,396		)
	Amount charged to operating expenses	13,729			10,371			9,355
	Depreciation expense on capitalized stock-based compensation	800			876			827
	Total stock-based compensation expense	$	14,529		$	11,247		$	10,182
	Deferred income tax benefit	$	5,426		$	4,111		$	3,671
Schedule of Stock Options Valuation Assumptions	The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used for options granted during the respective years:
		Year Ended		11 Months Ended		Year Ended
		December 31, 2014		December 31, 2013		January 31, 2013
	Risk-free interest rate	1.91	%	0.78	%	1.1	%
	Expected volatility	71.5	%	74.1	%	74.1	%
	Expected dividend yield	0	%	0	%	0	%
	Expected term (in years)	5.5		5.5		5.5
Schedule of Stock Options Activity	The following table provides a summary of stock option activity for the year ended December 31, 2014:
		Shares		Weighted			Weighted	Intrinsic
				Average			Average	Value
				Exercise Price			Remaining	(in thousands)
							Contractual
							Term
							(in months)
	Outstanding at January 1, 2014	4,082,065		$	34.98
	Granted	233,914		$	18.73
	Exercised	(62,175	)	$	12.7
	Forfeited/expired	(126,869	)	$	45.74
	Outstanding at December 31, 2014	4,126,935		$	34.07		45	$	9,575
	Options exercisable (fully vested) at December 31, 2014	3,275,479		$	38.42		32	$	6,176
Schedule of Restricted Stock Activity	The following table provides a summary of restricted stock activity for the year ended December 31, 2014:
		Shares		Weighted
				Average
				Grant-Date
				Fair Value
	Unvested shares at January 1, 2014	2,159,267		$	16.41
	Granted	605,160		$	18.74
	Vested	(721,886	)	$	16.13
	Forfeited	(32,081	)	$	17.44
	Unvested shares at December 31, 2014	2,010,460		$	17.2
Schedule of Performance Share Activity	The following table provides a summary of the performance share activity for the year ended December 31, 2014:
		Shares		Weighted
				Average
				Grant-Date
				Fair Value
	Unvested shares at January 1, 2014	587,210		$	19.23
	Granted	309,750		$	18.23
	Vested	—		$	—
	Forfeited	(25,634	)	$	19.04
	Unvested shares at December 31, 2014	871,326		$	18.88
	The range of performance shares that can be earned as of December 31, 2014 is as follows:
	Performance Period	Range	Minimum Shares		Target		Maximum Shares
					Shares
	February 1, 2012 to December 31, 2015	0% to 200%	—		278,084		556,168
	February 1, 2013 to December 31, 2016	0% to 200%	—		291,561		583,122
	January 1, 2014 to December 31, 2017	0% to 200%	—		301,681		603,362
			—		871,326		1,742,652

Impairment_of_Real_Estate_and_1

Impairment of Real Estate and Impairment of Unconsolidated Entities (Tables)	12 Months Ended
	Dec. 31, 2014
Impairment of Real Estate and Impairment of Unconsolidated Entities [Abstract]
Impairment of Real Estate Included in Continuing Operations	The following table summarizes the Company’s impairment of real estate included in continuing operations:
			Year Ended			11 Months Ended		Year Ended
			December 31, 2014			December 31, 2013		January 31, 2013
			(in thousands)
	B2 BKLYN	Brooklyn, New York	$	146,300		$	—	$	—
	Avenue at Tower City Center (Specialty Retail Center)	Cleveland, Ohio	72,473			—		—
	Office Buildings:
	Terminal Tower	Cleveland, Ohio	42,208			—		—
	Post Office Plaza	Cleveland, Ohio	14,378			—		—
	Building J at Illinois Science and Technology Park	Skokie, Illinois	—			17,474		—
	Halle Building	Cleveland, Ohio	—			—		30,200
	Pacific Park Brooklyn	Brooklyn, New York	—			289,864		—
	LiveWork Las Vegas	Las Vegas, Nevada	—			112,838		—
	Other		1,736			1,185		460
			$	277,095		$	421,361	$	30,660
Impairment of Real Estate included in Discontinued Operations	The following table summarizes the Company’s impairment of real estate included in discontinued operations:
			Year Ended			11 Months Ended		Year Ended
			December 31, 2014			December 31, 2013		January 31, 2013
			(in thousands)
	Regional Malls:
	Promenade Bolingbrook	Bolingbrook, Illinois	$	—		$	54,194	$	—
	Orchard Town Center	Westminster, Colorado	—			15,649		—
	Investment in triple net lease retail property	Kansas City, Missouri	—			6,870		—
	Investment in triple net lease retail property	Portage, Michigan	—			—		2,263
	White Oak Village (Specialty Retail Center)	Richmond, Virginia	—			—		1,566
	Other		—			—		425
			$	—		$	76,713	$	4,254
Unobservable Inputs Used to Determine the Fair Value of the Non-recurring Impairment of Real Estate	The following table presents quantitative information about the significant unobservable inputs used to determine the fair value of the impairment of real estate for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013:
		Quantitative Information about Level 3 Fair Value Measurements
		Fair Value			Valuation Technique	Unobservable Input	Range of Input Values
		(in thousands)
	December 31, 2014
	Impairment of real estate	$	84,738		Discounted cash flows	Market capitalization rate	4.5% - 10.0% (1)
						Discount rate	6.0% - 12.0% (1)
	Impairment of real estate	38,750			Indicative bids	Indicative bids	N/A (2)
	December 31, 2013
	Impairment of real estate	$	734,240		Indicative bids	Indicative bids	N/A (2)
	Impairment of real estate	$	29,500		Comparable property market analysis	Price per square foot	$22 to $55 per square foot (3)
	January 31, 2013
	Impairment of real estate	$	83,193		Indicative bids	Indicative bids	N/A (2)
	Impairment of real estate	10,500			Discounted cash flows	Discount rate	10.00%
	-1	Weighted average market capitalization and discount rates are 6.7% and 8.6%, respectively.
	-2	These fair value measurements were derived from bona fide purchase offers from third party prospective buyers, subject to the Company’s corroboration for reasonableness.
	-3	Weighted average price is $45 per square foot.

Recovered_Sheet1

Net Gain (Loss) on Land held for Divestiture Activity (Tables)	12 Months Ended
	Dec. 31, 2014
Land Held for Divestiture disclosures [Abstract]
Schedule of Net Gain (Loss) on Land Held for Divestiture Activity	The following table summarizes the net gain (loss) on land held for divestiture activity of consolidated entities:
		Year Ended		11 Months Ended			Year Ended
		December 31, 2014		December 31, 2013			January 31, 2013
		(in thousands)
	Sales of land held for divestiture	$	—	$	1,941		$	74,150
	Cost of sales of land held for divestiture	—		(323		)	(56,247		)
	Gain on extinguishment of debt of land held for divestiture	—		—			4,373
	Net gain on closed transactions of land held for divestiture	—		1,618			22,276
	Bad debt expense	—		(9,000		)	—
	Impairment of land held for divestiture	—		—			(15,796		)
	Net gain (loss) on land held for divestiture activity	$	—	$	(7,382	)	$	6,480
Unobservable Inputs Used to Determine Fair Value of Impairment of Land Held for Divestiture	The following table presents quantitative information about the significant unobservable inputs used to determine the fair value of impairment of consolidated land held for divestiture for the year ended January 31, 2013:
		Quantitative Information about Level 3 Fair Value Measurements
		Fair Value January 31, 2013		Valuation Technique	Unobservable Input	Input Values
		(in thousands)
	Impairment of land held for divestiture	$	15,663	Indicative bids	Indicative bids	N/A (1)
	Impairment of land held for divestiture	$	926	Discounted cash flows(2)	N/A	N/A
	-1	These fair value measurements were developed by third party sources, subject to the Company’s corroboration for reasonableness.
	-2	The Company used a discounted cash flow technique to estimate fair value, however, due to the estimated holding period being less than 12 months, the impact of discounting was deemed immaterial.
Schedule of Net Gain (Loss) on Land Held for Divestiture Activity of Unconsolidated Entities	The following table summarizes the net gain (loss) on land held for divestiture activity of unconsolidated entities:
		Year Ended		11 Months Ended			Year Ended
		December 31, 2014		December 31, 2013			January 31, 2013
		(in thousands)
	Net gain (loss) on sales of land held for divestiture of unconsolidated entities	$	—	$	1,338		$	(371	)
	Impairment of investments in unconsolidated entities	—		—			(40,406		)
	Net gain (loss) on land held for divestiture activity of unconsolidated entities	$	—	$	1,338		$	(40,777	)

Net_Gain_on_Disposition_of_Ful1

Net Gain on Disposition of Full or Partial Interest in Rental Properties (Tables)	12 Months Ended
	Dec. 31, 2014
Net Gain (Loss) on Disposition of Full or Partial Interest in Rental Properties [Abstract]
Net Gain on Disposition of Full or Partial Interest in Rental Properties	The net gain (loss) on disposition of full or partial interest in rental properties is comprised of the following:
			Year Ended			11 Months Ended		Year Ended
			December 31, 2014			December 31, 2013		January 31, 2013
			(in thousands)
	Forest Trace (Supported Living Apartments)	Lauderhill, Florida	$	23,013		$	—	$	—
	Office Buildings:
	Halle Building	Cleveland, Ohio	7,881			—		—
	Stapleton - 3055 Roslyn	Denver, Colorado	(146		)	—		—
	QIC Joint Venture		(467		)	381,627		—
	New York Retail Joint Venture		—			114,465		—
			$	30,281		$	496,092	$	—

Net_Gain_on_Change_in_Control_1

Net Gain on Change in Control of Interests Net Gain on Change in Control of Interests (Tables)	12 Months Ended
	Dec. 31, 2014
Net Gain on Change in Control of Interests [Abstract]
Schedule of Net Gains on Change in Control of Interests	The net gain on change in control of interests is comprised of the following:
			Year Ended			11 Months Ended			Year Ended
			December 31, 2014			December 31, 2013			January 31, 2013
			(in thousands)
	Bayside Village (Apartment Community)	San Francisco, California	$	191,199		$	—		$	—
	Boulevard Mall (Regional Mall)	Amherst, New York	36,702			—			—
	Other		2,759			2,762			8,351
			$	230,660		$	2,762		$	8,351
Pro Forma Information of Business Acquisitions	The following unaudited supplemental pro forma operating data is presented for the year ended December 31, 2014 and the 11 months ended December 31, 2013, as if the gains on change in control related to Bayside Village and Boulevard Mall were effective February 1, 2013. The unaudited supplemental pro forma operating data is not necessarily indicative of what the actual results of operations of the Company would have been assuming the transactions had been effective as set forth above, nor do they purport to represent the Company’s results of operations for future periods. The qualitative and quantitative effect to the pro forma operating data related to the remaining gains on change in control of interests described in the table above was not material.
		Year Ended December 31, 2014			Pro Forma Adjustments			Pro Forma Year Ended December 31, 2014
		(in thousands, except per share data)
	Pro forma revenues	$	966,052		$	40,721		$	1,006,773
	Pro forma earnings (loss) from continuing operations	$	(34,032	)	$	13,638		$	(20,394	)
	Pro forma net earnings (loss) attributable to common shareholders	$	(7,595	)	$	775		$	(6,820	)
	Weighted average shares outstanding - Diluted	198,480,783						198,480,783
	Diluted net loss attributable to common shareholders	$	(0.04	)				$	(0.03	)
		11 Months Ended December 31, 2013			Pro Forma Adjustments			Pro Forma 11 Months Ended December 31, 2013
		(in thousands, except per share data)
	Pro forma revenues	$	998,272		$	39,819		$	1,038,091
	Pro forma earnings (loss) from continuing operations	$	(50,591	)	$	9,963		$	(40,628	)
	Pro forma net earnings (loss) attributable to common shareholders	$	(5,492	)	$	1,427		$	(4,065	)
	Weighted average shares outstanding - Diluted	198,696,729						198,696,729
	Diluted net loss attributable to common shareholders	$	(0.03	)				$	(0.02	)

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Income Tax Expense (Benefit)	The income tax expense (benefit) related to continuing operations consists of the following:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Current
	Federal	$	(1,616	)	$	(1,725	)	$	(54,157	)
	State	6,547			2,287			(6,287		)
		4,931			562			(60,444		)
	Deferred
	Federal	(29,711		)	13,172			48,258
	State	7,584			(1,468		)	(1,735		)
		(22,127		)	11,704			46,523
	Total income tax expense (benefit)	$	(17,196	)	$	12,266		$	(13,921	)
Reconciliation of Effective Tax Rate for Income Taxes from Continuing Operations	The effective tax rate for income taxes from continuing operations varies from the federal statutory rate of 35% due to the following items:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(dollars in thousands)
	Earnings (loss) before income taxes	$	(138,136	)	$	(147,488	)	$	(79,747	)
	Equity in earnings of unconsolidated entities, net of impairment	86,908			109,163			44,631
	Less: Noncontrolling interests	13,475			71,525			1,251
	Earnings (loss) from continuing operations, including noncontrolling interest, before income taxes	(37,753		)	33,200			(33,865		)
	Income taxes computed at the statutory rate	(13,214		)	11,620			(11,853		)
	Increase (decrease) in tax resulting from:
	State taxes, net of federal benefit	7,860			(887		)	(5,233		)
	State net operating loss, net of federal benefit	(3,899		)	2,845			1,667
	General business credits	(15,099		)	(1,638		)	(947		)
	Valuation allowance	5,658			(5,205		)	(2,048		)
	Charitable contributions	2,135			3,356			2,628
	Permanent adjustments	(859		)	(18		)	3,037
	Conversion/Exchange of senior debt	—			1,667			—
	Other items	222			526			(1,172		)
	Total income tax expense (benefit)	$	(17,196	)	$	12,266		$	(13,921	)
	Effective tax rate	45.55		%	36.95		%	41.11		%
	The components of the deferred income tax expense (benefit) for continuing operations are as follows:
	Excess of tax over financial statement depreciation and amortization	$	8,343		$	(8,385	)	$	19,415
	Costs on land and rental properties under development expensed for tax purposes	2,919			4,818			11,048
	Revenues and expenses recognized in different periods for tax and financial statement purposes	122,380			132,380			50,278
	Difference between tax and financial statements related to unconsolidated entities	2,673			(5,246		)	207
	Impairment of real estate and land held for divestiture	(96,892		)	(128,357		)	(16,178		)
	Deferred state taxes, net of federal benefit	1,045			1,277			882
	Utilization of (addition to) tax loss carryforward excluding effect of stock options	(54,272		)	21,916			(16,230		)
	Valuation allowance	5,658			(5,205		)	(2,048		)
	General business credits	(15,099		)	(520		)	(947		)
	Alternative Minimum Tax credits	1,118			(974		)	96
	Deferred income tax expense (benefit)	$	(22,127	)	$	11,704		$	46,523
Deferred Tax Liability Components	The components of the deferred income tax liability are as follows:
		Temporary Differences							Deferred Tax
		December 31, 2014			December 31, 2013				December 31, 2014			December 31, 2013
		(in thousands)
	Depreciation	$	539,977		$	424,595			$	209,419		$	164,671
	Capitalized costs	765,081			395,733				296,721			153,508
	Tax loss carryforward	(254,201		)	(99,138		)		(88,970		)	(34,698		)
	State loss carryforward, net of federal benefit	—			—				(25,061		)	(21,170		)
	Valuation allowance	—			—				53,735			48,077
	Federal tax credits and other carryforwards	—			—				(69,619		)	(56,274		)
	Other comprehensive loss	(96,127		)	(125,099		)		(37,281		)	(48,517		)
	Basis in unconsolidated entities	420,705			367,892				163,162			142,680
	Other	(34,142		)	370,743				(19,632		)	137,617
	Total	$	1,341,293		$	1,334,726			$	482,474		$	485,894
Schedule of Net Deferred Tax Liability
		December 31, 2014			December 31, 2013
		(in thousands)
	Deferred tax liabilities	$	1,668,655		$	1,423,173
	Deferred tax assets	1,239,916			985,356
	Less: valuation allowance (1)	(53,735		)	(48,077		)
		1,186,181			937,279
	Net deferred tax liability	$	482,474		$	485,894
	-1	The valuation allowance is related to state net operating losses and bonus depreciation, general business credits and charitable contributions.
Reconciliation of Unrecognized Tax Benefits	A reconciliation of the total amounts of the Company’s unrecognized tax benefits, exclusive of interest and penalties, is depicted in the following table:
		Unrecognized Tax Benefit
		December 31, 2014			December 31, 2013
		(in thousands)
	Beginning balance, January 1, 2014 and February 1, 2013	$	968		$	584
	Gross increases for tax positions of prior years	—			527
	Settlements	(164		)	—
	Lapse of statutes of limitation	—			(143		)
	Unrecognized tax benefits balance at December 31, 2014 and 2013	$	804		$	968

Discontinued_Operations_and_Ga1

Discontinued Operations and Gain (Loss) on Disposition of Rental Properties (Tables)	12 Months Ended
	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Summary of Rental Properties Included in Discontinued Operations	The following table summarizes the rental properties included in discontinued operations:
	Property	Location	Square Feet/	Period	Year Ended 12/31/14	11 Months Ended 12/31/13	Year Ended 1/31/13
			Number of Units (Unaudited)	Disposed
	Commercial Group:
	Promenade Bolingbrook	Bolingbrook, Illinois	771,000 square feet	Q2-2014	Yes	Yes	Yes
	Quartermaster Plaza	Philadelphia, Pennsylvania	456,000 square feet	Q1-2014	Yes	Yes	Yes
	Mesa del Sol - 5600 University SE	Albuquerque, New Mexico	87,000 square feet	Q1-2014	Yes	Yes	Yes
	Orchard Town Center	Westminster, Colorado	603,000 square feet	Q4-2013	—	Yes	Yes
	Colorado Studios	Denver, Colorado	75,000 square feet	Q3-2013	—	Yes	Yes
	Higbee Building	Cleveland, Ohio	815,000 square feet	Q2-2013	—	Yes	Yes
	Sheraton Station Square	Pittsburgh, Pennsylvania	399 rooms	Q2-2013	—	Yes	Yes
	Fairmont Plaza	San Jose, California	335,000 square feet	Q4-2012	—	—	Yes
	White Oak Village	Richmond, Virginia	843,000 square feet	Q3-2012	—	—	Yes
	Quebec Square	Denver, Colorado	739,000 square feet	Q1-2012	—	—	Yes
	Seven triple net lease properties	Various	422,000 square feet	Various	—	Yes	Yes
	Residential Group:
	Millender Center	Detroit, Michigan	339 units	Q1-2013	—	Yes	Yes
	Emerald Palms	Miami, Florida	505 units	Q4-2012	—	—	Yes
	Southfield	Whitemarsh, Maryland	212 units	Q3-2012	—	—	Yes
Summary of Operating Results of Discontinued Operations	The following table summarizes the operating results related to discontinued operations:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Revenues	$	7,034		$	64,093		$	113,076
	Expenses
	Operating expenses	3,026			35,381			55,926
	Depreciation and amortization	987			12,909			23,566
	Impairment of real estate	—			76,713			4,254
		4,013			125,003			83,746
	Interest income	—			274			390
	Gain on disposition of rental properties	28,100			41,831			100,900
	Net loss on change in control of interest	—			—			(1,585		)
	Interest expense	(5,538		)	(12,015		)	(23,167		)
	Amortization of mortgage procurement costs	(41		)	(476		)	(1,389		)
	Loss on extinguishment of debt	(448		)	(40		)	(464		)
	Earnings (loss) before income taxes	25,094			(31,336		)	104,015
	Income tax expense (benefit)	12,082			(11,137		)	46,549
	Earnings (loss) from discontinued operations	13,012			(20,199		)	57,466
	Noncontrolling interests
	Gain on disposition of rental properties	58			5,960			965
	Operating earnings (loss) from rental properties	(8		)	82			132
		50			6,042			1,097
	Earnings (loss) from discontinued operations attributable to Forest City Enterprises, Inc.	$	12,962		$	(26,241	)	$	56,369
Summary of Gains (Losses) on Disposition of Rental Properties	The following table summarizes the pre-tax gain (loss) on disposition of rental properties:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
		(in thousands)
	Specialty Retail Centers:
	Quartermaster Plaza	$	26,373		$	—		$	—
	Quebec Square	—			—			8,879
	Regional Malls:
	Promenade Bolingbrook	1,276			—			—
	Orchard Town Center	—			(2,157		)	—
	Office Buildings:
	Mesa del Sol - 5600 University SE	451			—			—
	Higbee Building	—			2,922			—
	Colorado Studios	—			1,239			—
	Fairmont Plaza	—			—			26,877
	Apartment Communities:
	Millender Center	—			21,660			—
	Emerald Palms	—			—			45,845
	Southfield	—			—			13,445
	Sheraton Station Square (Hotel)	—			18,096			—
	Triple net lease properties	—			(132		)	6,568
	Other	—			203			(714		)
		$	28,100		$	41,831		$	100,900

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted EPS Computations	The reconciliation of the basic and diluted EPS computations is shown in the following table:
		Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013
	Numerators (in thousands)
	Earnings (loss) from continuing operations attributable to Forest City Enterprises, Inc.	$	(20,557	)	$	20,934		$	(19,944	)
	Preferred dividends and inducements of preferred stock conversions	—			(185		)	(32,129		)
	Undistributed earnings allocated to participating securities	—			(605		)	—
	Earnings (loss) from continuing operations attributable to common shareholders - Basic	(20,557		)	20,144			(52,073		)
	Undistributed earnings allocated to participating securities	—			605			—
	Earnings (loss) from continuing operations attributable to common shareholders - Diluted	$	(20,557	)	$	20,749		$	(52,073	)
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	(7,595	)	$	(5,307	)	$	36,425
	Preferred dividends and inducements of preferred stock conversions	—			(185		)	(32,129		)
	Undistributed earnings allocated to participating securities	—			—			(1,836		)
	Net earnings (loss) attributable to common shareholders - Basic and Diluted	$	(7,595	)	$	(5,492	)	$	2,460
	Denominators
	Weighted average shares outstanding - Basic	198,480,783			193,465,572			172,621,723
	Effect of stock options, restricted stock and performance shares	—			1,584,402			—
	Effect of convertible debt	—			—			—
	Effect of convertible Class A Common Units	—			3,646,755			—
	Weighted average shares outstanding - Diluted (1)	198,480,783			198,696,729			172,621,723
	Earnings Per Share
	Earnings (loss) from continuing operations attributable to common shareholders - Basic and Diluted	$	(0.10	)	$	0.1		$	(0.30	)
	Net earnings (loss) attributable to common shareholders - Basic and Diluted	$	(0.04	)	$	(0.03	)	$	0.01
	-1	Incremental shares from dilutive options, restricted stock and convertible securities aggregating 37,146,769 and 49,642,605 for the years ended December 31, 2014 and January 31, 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive due to loss from continuing operations. Convertible securities of 30,200,589 for the 11 months ended December 31, 2013 were not included in the computation of diluted EPS because their effect is anti-dilutive under the if-converted method. Weighted-average options, restricted stock and performance shares of 3,483,885, 3,601,719 and 4,105,670 for the year ended December 31, 2014, the 11 months ended December 31, 2013 and the year ended January 31, 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive under the treasury stock method.

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Financial Data of Reportable Operating Segments	The following tables summarize financial data for the Company’s reportable operating segments. All amounts are presented in thousands.
		December 31, 2014			December 31, 2013
		Identifiable Assets
	Commercial Group	$	4,210,714		$	5,120,360
	Residential Group	3,172,188			2,468,708
	Arena	955,570			984,937
	Land Development Group	250,833			260,070
	Corporate Activities	225,635			117,950
		$	8,814,940		$	8,952,025
		Year Ended			11 Months Ended			Year Ended			Year Ended			11 Months Ended			Year Ended
		December 31, 2014			December 31, 2013			January 31, 2013			December 31, 2014			December 31, 2013			January 31, 2013
		Revenues									Operating Expenses
	Commercial Group	$	517,487		$	593,714		$	680,533		$	300,123		$	334,996		$	327,263
	Residential Group	256,009			249,677			264,547			174,472			179,405			184,289
	Arena	116,695			104,532			48,353			76,096			72,659			49,175
	Land Development Group	75,861			50,349			54,634			32,486			33,737			48,055
	Corporate Activities	—			—			—			51,116			45,021			52,450
		$	966,052		$	998,272		$	1,048,067		$	634,293		$	665,818		$	661,232
		Depreciation and Amortization									Interest and Other Income
	Commercial Group	$	124,821		$	181,697		$	148,983		$	7,929		$	18,078		$	14,366
	Residential Group	68,089			55,031			51,885			21,081			21,742			21,149
	Arena	34,299			33,231			8,888			—			—			—
	Land Development Group	359			364			840			13,597			12,218			9,866
	Corporate Activities	2,898			2,731			1,658			173			245			164
		$	230,466		$	273,054		$	212,254		$	42,780		$	52,283		$	45,545
		Interest Expense									Capital Expenditures
	Commercial Group	$	129,515		$	168,056		$	169,590		$	119,343		$	171,002		$	327,867
	Residential Group	28,108			32,409			18,680			289,502			245,647			149,160
	Arena	40,229			34,220			(122		)	10,972			43,928			325,744
	Land Development Group	(1,090		)	(320		)	3,801			37			819			190
	Corporate Activities	37,643			50,677			61,375			15			232			904
		$	234,405		$	285,042		$	253,324		$	419,869		$	461,628		$	803,865
Reconciliation of Net Earnings (Loss) to FFO by Segment
	Year Ended December 31, 2014	Commercial			Residential			Arena			Land			Corporate Activities			Total
		Group			Group						Development
											Group
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	(67,682	)	$	115,833		$	(17,555	)	$	51,360		$	(89,551	)	$	(7,595	)
	Depreciation and amortization – Real Estate Groups	178,169			97,173			19,895			159			—			295,396
	Net gain on disposition of full or partial interest in rental properties	(7,241		)	(23,013		)	—			—			—			(30,254		)
	Gain on disposition of unconsolidated entities	(25,279		)	(27,142		)	—			—			—			(52,421		)
	Impairment of consolidated depreciable real estate	129,059			146,039			—			—			—			275,098
	Impairment of unconsolidated depreciable real estate	3,124			—			—			—			—			3,124
	Discontinued operations:
	Depreciation and amortization – Real Estate Groups	986			—			—			—			—			986
	Gain on disposition of rental properties	(28,042		)	—			—			—			—			(28,042		)
	Income tax expense (benefit) on non-FFO:
	Gain on disposition of rental properties	—			—			—			—			44,988			44,988
	Impairment of depreciable real estate	—			—			—			—			(106,691		)	(106,691		)
	FFO	$	183,094		$	308,890		$	2,340		$	51,519		$	(151,254	)	$	394,589
	11 Months Ended December 31, 2013
	Net earnings (loss) attributable to common shareholders	$	84,294		$	31,220		$	(19,514	)	$	18,915		$	(120,407	)	$	(5,492	)
	Preferred dividends	—			—			—			—			185			185
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	84,294		$	31,220		$	(19,514	)	$	18,915		$	(120,222	)	$	(5,307	)
	Depreciation and amortization – Real Estate Groups	220,135			83,154			19,119			258			—			322,666
	Net gain on disposition of partial interest in rental properties	(496,092		)	—			—			—			—			(496,092		)
	Gain on disposition of unconsolidated entities	(68,430		)	—			—			—			—			(68,430		)
	Impairment of consolidated depreciable real estate	17,474			1,185			—			—			—			18,659
	Discontinued operations:
	Depreciation and amortization – Real Estate Groups	12,766			165			—			—			—			12,931
	Gain on disposition of rental properties	(19,843		)	(16,028		)	—			—			—			(35,871		)
	Impairment of consolidated depreciable real estate	76,713			—			—			—			—			76,713
	Income tax expense (benefit) on non-FFO:
	Gain on disposition of rental properties	—			—			—			—			233,980			233,980
	Impairment of depreciable real estate	—			—			—			—			(36,988		)	(36,988		)
	FFO	$	(172,983	)	$	99,696		$	(395	)	$	19,173		$	76,770		$	22,261
	Year Ended January 31, 2013
	Net earnings (loss) attributable to common shareholders	$	82,022		$	132,141		$	(497	)	$	(23,833	)	$	(185,537	)	$	4,296
	Preferred dividends and inducements of preferred stock conversions	—			—			—			—			32,129			32,129
	Net earnings (loss) attributable to Forest City Enterprises, Inc.	$	82,022		$	132,141		$	(497	)	$	(23,833	)	$	(153,408	)	$	36,425
	Depreciation and amortization – Real Estate Groups	186,115			85,977			5,213			661			—			277,966
	Gain on disposition of unconsolidated entities	(16,107		)	(34,959		)	—			—			—			(51,066		)
	Impairment of consolidated depreciable real estate	30,660			—			—			—			—			30,660
	Impairment of unconsolidated depreciable real estate	—			—			—			390			—			390
	Discontinued operations:
	Depreciation and amortization – Real Estate Groups	20,357			3,114			—			—			—			23,471
	Gain on disposition of rental properties	(40,645		)	(59,290		)	—			—			—			(99,935		)
	Impairment of consolidated depreciable real estate	4,254			—			—			—			—			4,254
	Income tax expense (benefit) on non-FFO:
	Gain on disposition of rental properties	—			—			—			—			58,935			58,935
	Impairment of depreciable real estate	—			—			—			—			(13,692		)	(13,692		)
	FFO	$	266,656		$	126,983		$	4,716		$	(22,782	)	$	(108,165	)	$	267,408

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Jan. 31, 2013
Accounting Policies [Abstract]
Unrealized losses on securities	$0		$0		$340,000
Unrealized (gains) losses on foreign currency translation	137,000		189,000		-69,000
Unrealized losses on interest rate contracts	96,084,000	[1]	125,059,000	[1]	168,497,000	[1]
Total unrealized losses	96,221,000		125,248,000		168,768,000
Income tax benefit	-37,281,000		-48,517,000		-65,382,000
Noncontrolling Interest	-94,000		-149,000		-183,000
Accumulated Other Comprehensive Loss	$58,846,000		$76,582,000		$103,203,000
[1]	(1)Included in the amounts as of DecemberB 31,B 2014, DecemberB 31,B 2013 and JanuaryB 31,B 2013 are $73,536, $97,360 and $126,506, respectively, of unrealized loss on an interest rate swap associated with New York Times office building on its nonrecourse mortgage debt with a notional amount of $640,000. This swap effectively fixes the mortgage at an all-in lender interest rate of 6.40% and expires in September 2017.

Summary_of_Significant_Account4

Summary of Significant Accounting Policies (Details 1) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014
Schedule of Changes in Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	($103,203,000)	($76,582,000)
OCI before reclassifications	22,979,000	13,930,000
(Gain) loss reclassified from accumulated OCI	3,642,000	3,806,000
Total other comprehensive income (loss)	26,621,000	17,736,000
Ending Balance	-76,582,000	-58,846,000
Securities [Member]
Schedule of Changes in Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	-208,000	0
OCI before reclassifications	430,000	0
(Gain) loss reclassified from accumulated OCI	-222,000	0
Total other comprehensive income (loss)	208,000	0
Ending Balance	0	0
Foreign Currency Translation [Member]
Schedule of Changes in Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	42,000	-116,000
OCI before reclassifications	-158,000	32,000
(Gain) loss reclassified from accumulated OCI	0	0
Total other comprehensive income (loss)	-158,000	32,000
Ending Balance	-116,000	-84,000
Interest Rate Contracts [Member]
Schedule of Changes in Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	-103,037,000	-76,466,000
OCI before reclassifications	22,707,000	13,898,000
(Gain) loss reclassified from accumulated OCI	3,864,000	3,806,000
Total other comprehensive income (loss)	26,571,000	17,704,000
Ending Balance	($76,466,000)	($58,762,000)

Summary_of_Significant_Account5

Summary of Significant Accounting Policies (Details 2) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$285,042,000	$228,980,000	$234,405,000	$253,324,000
Discontinued operations	-2,203,000		1,844,000	-4,564,000
Equity in earnings	-107,825,000		-90,032,000	-85,798,000
Income tax benefit	12,266,000	-12,430,000	-17,196,000	-13,921,000
Noncontrolling interest	-71,525,000		-13,475,000	-1,251,000
Loss reclassified from accumulated OCI	-3,642,000		-3,806,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	6,258,000		2,523,000
Discontinued operations			3,666,000
Equity in earnings	82,000		59,000
Total before income tax and noncontrolling interest	6,340,000		6,248,000
Income tax benefit	-2,460,000		-2,412,000
Noncontrolling interest	-16,000		-30,000
Loss reclassified from accumulated OCI	$3,864,000		$3,806,000

Summary_of_Significant_Account6

Summary of Significant Accounting Policies (Details 3) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Schedule of Transition Period Comparative Data [Line Items]
Revenues	$998,272,000	$963,325,000	$966,052,000	$1,048,067,000
Expenses [Abstract]
Operating expenses	665,818,000	600,134,000	634,293,000	661,232,000
Depreciation and amortization	273,054,000	189,168,000	230,466,000	212,254,000
Write-offs of abandoned development projects and demolition costs	40,414,000	14,029,000	1,655,000	26,850,000
Impairment of real estate	421,361,000	30,660,000	277,095,000	30,660,000
Net loss on land held for divestiture activity	7,382,000	4,457,000	0	-6,480,000
Total expenses	1,408,029,000	838,448,000	1,143,509,000	924,516,000
Operating income (loss)	-409,757,000	124,877,000	-177,457,000	123,551,000
Interest and other income	52,283,000	42,245,000	42,780,000	45,545,000
Net gain on disposition of partial interest in rental properties	496,092,000	0	30,281,000	0
Net gain on change in control of interests	2,762,000	8,351,000	230,660,000	8,351,000
Interest expense	-285,042,000	-228,980,000	-234,405,000	-253,324,000
Amortization of mortgage procurement costs	-8,375,000	-9,987,000	-8,518,000	-10,966,000
Gain on extinguishment of debt	4,549,000	6,807,000	-1,179,000	7,096,000
Loss before income taxes	-147,488,000	-56,687,000	-138,136,000	-79,747,000
Income tax expense (benefit)	12,266,000	-12,430,000	-17,196,000	-13,921,000
Earnings from unconsolidated entities, including impairment, gross of tax	107,825,000	84,543,000
Net gain (loss) on land held for divestiture activity, gross of tax	1,338,000	-42,606,000	0	-40,777,000
Total equity in earnings of unconsolidated entities	109,163,000	41,937,000	86,908,000	44,631,000
Loss from continuing operations	-50,591,000	-2,320,000	-34,032,000	-21,195,000
Discontinued operations, net of tax	-20,199,000	59,410,000	13,012,000	57,466,000
Net earnings (loss)	-70,790,000	57,090,000	-21,020,000	36,271,000
Noncontrolling interests	65,483,000	-5,635,000	13,425,000	154,000
Net earnings (loss) attributable to Forest City Enterprises, Inc.	-5,307,000	51,455,000	-7,595,000	36,425,000
Preferred dividends and inducements of preferred stock conversions	-185,000	-32,129,000	0	-32,129,000
Net earnings (loss) attributable to common shareholders	($5,492,000)	$19,326,000	($7,595,000)	$4,296,000

Summary_of_Significant_Account7

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details 4) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Investing Activities
Decrease in projects under construction and development	$87,857,000	$313,480,000	$33,662,000
(Increase) decrease in completed rental properties	842,261,000	-368,588,000	170,033,000
(Increase) decrease in restricted cash	4,326,000	-1,272,000	14,463,000
(Increase) decrease in investments in and advances to unconsolidated entities	-32,078,000	-202,922,000	21,826,000
Total effect on investing activities	902,366,000	-259,302,000	239,984,000
Financing Activities
Increase in accounts payable, accrued expenses and other liabilities	0	5,552,000	0
Decrease in nonrecourse mortgage debt and notes payable	-903,085,000	-153,345,000	-215,008,000
Decrease in convertible senior debt	-218,675,000	0	-6,049,000
Decrease in restricted cash	0	0	8,208,000
Decrease in preferred stock	-5,489,000	0	-209,448,000
Increase in Class A common stock	4,680,000	225,000	4,617,000
Increase in additional paid-in capital	241,268,000	111,150,000	200,448,000
Increase in treasury stock	-12,868,000	0	0
Increase (decrease) in redeemable noncontrolling interest	-50,546,000	28,390,000	8,424,000
Increase in noncontrolling interest	31,702,000	44,876,000	558,000
Total effect on financing activities	($913,013,000)	$36,848,000	($208,250,000)

Summary_of_Significant_Account8

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details Textual 1) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
		unit
		State
Accounting Policies (Textual) [Abstract]
Number of strategic business units		3
Number of reportable segments		5
Number of reportable operating segments		4
Assets	$8,952,025,000	$8,814,940,000
Number of states in which entity has consolidated assets		24
Fair value of consideration exchanged or accrued related to all noncontrolling interest acquisitions in excess of book value	98,687,000	99,863,000	27,335,000
Fair value of consideration exchanged related to contribution of properties in excess of book value	0	-3,935,000
Excess tax benefits from share-based compensation as financing cash flows	0	0	0
Maximum period from cessation of construction activity to project completion and availability for occupancy		1 year
Put/call provisions maximum contract term		7 years
Residential [Member]
Accounting Policies (Textual) [Abstract]
Lease term		1 year
Arena [Member]
Accounting Policies (Textual) [Abstract]
Arena naming rights agreement term		20 years
Estimated useful life of property		34 years 6 months
Minimum [Member]
Accounting Policies (Textual) [Abstract]
Expected lease-up period		3 months
Term of compliance regulation on tax credit		0 years
Minimum [Member] | Retail Centers and Office Buildings [Member]
Accounting Policies (Textual) [Abstract]
Lease term		1 year
Minimum [Member] | Arena [Member]
Accounting Policies (Textual) [Abstract]
Arena founding partner and sponsor agreement term		1 year
Arena suite license agreement term		1 year
Minimum [Member] | Building and Building Improvements [Member]
Accounting Policies (Textual) [Abstract]
Estimated useful life of property		40 years
Maximum [Member]
Accounting Policies (Textual) [Abstract]
Expected lease-up period		12 months
Term of compliance regulation on tax credit		7 years
Maximum [Member] | Retail Centers and Office Buildings [Member]
Accounting Policies (Textual) [Abstract]
Lease term		30 years
Maximum [Member] | Arena [Member]
Accounting Policies (Textual) [Abstract]
Arena founding partner and sponsor agreement term		7 years
Arena suite license agreement term		7 years
Maximum [Member] | Building and Building Improvements [Member]
Accounting Policies (Textual) [Abstract]
Estimated useful life of property		50 years
Additional Paid-in Capital [Member]
Accounting Policies (Textual) [Abstract]
Fair value of consideration exchanged or accrued related to all noncontrolling interest acquisitions in excess of book value	95,924,000	32,505,000	20,197,000
Fair value of consideration exchanged related to contribution of properties in excess of book value	($26,000,000)	$78,103,000
Operating apartment communities [Member]
Accounting Policies (Textual) [Abstract]
Number of properties		2
Apartment communities under construction [Member]
Accounting Policies (Textual) [Abstract]
Number of properties		3

Summary_of_Significant_Account9

Summary of Significant Accounting Policies (Details Textual 2) (USD $)	Dec. 31, 2014	Dec. 31, 2013
	acre
Variable Interest Entity [Line Items]
Maximum exposure to loss	277,000,000
Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of variable interest entities	24
Number of properties represented by variable interest entities	20
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of variable interest entities	61
Pacific Park Brooklyn [Member]
Variable Interest Entity [Line Items]
Area of project	22
Decrease in development project held for sale		504,171,000
Decrease in cash and equivalents		1,141,000
Decrease in restricted cash		99,784,000
Decrease in other assets		2,571,000
Decrease in nonrecourse mortgage debt		228,000,000
Decrease in accounts payable, accrued expenses and other liabilities		20,428,000
Increase in investments in and advances to unconsolidated entities		156,071,000
B2 BKLYN [Member]
Variable Interest Entity [Line Items]
Decrease in real estate, net		104,408,000
Decrease in cash and equivalents		1,306,000
Decrease in restricted cash		46,801,000
Decrease in other assets		3,110,000
Decrease in nonrecourse mortgage debt		56,605,000
Decrease in accounts payable, accrued expenses and other liabilities		$7,656,000

Recovered_Sheet2

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details Textual 3) (Ten MetroTech Center [Member], USD $)	11 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Ten MetroTech Center [Member]
Depreciation, by Property [Line Items]
Accelerated depreciation expense	$45.50

Recovered_Sheet3

Summary of Significant Accounting Policies (Details Textual 4) (USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Accounting Policies (Textual) [Abstract]
Unrealized losses on an interest rate swap associated with office building	$97,360	$73,536	$126,506
New York Times [Member]
Accounting Policies (Textual) [Abstract]
Notional amount		$640,000
Mortgages [Member]
Accounting Policies (Textual) [Abstract]
All-in lender interest rate		6.40%

Notes_and_Accounts_Receivable_2

Notes and Accounts Receivable, Net (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Components of notes and accounts receivable
Notes receivable	$34,922	$38,225
Notes and accounts receivable, gross	429,809	470,702
Allowance for doubtful accounts	-10,771	-15,141
Notes and Accounts Receivable, Net	419,038	455,561
Weighted average interest rate on notes receivable	6.81%	6.47%
Notes receivable due within one year	4,548	8,534
Straight-line rent from tenants [Member]
Components of notes and accounts receivable
Accounts receivable	131,887	135,370
Military Housing, primarily reimbursable construction costs [Member]
Components of notes and accounts receivable
Accounts receivable	27,024	29,771
Stapleton advances [Member]
Components of notes and accounts receivable
Accounts receivable	150,111	145,917
Tenant receivables [Member]
Components of notes and accounts receivable
Accounts receivable	16,298	20,008
Other [Member]
Components of notes and accounts receivable
Accounts receivable	$69,567	$101,411

Notes_and_Accounts_Receivable_3

Notes and Accounts Receivable Net (Details Textual) (Stapleton advances [Member], USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Stapleton advances [Member]
Notes and Accounts Receivable, Net (Textual) [Abstract]
Interest income	$10,047	$12,252	$7,893
Weighted average interest rate		8.64%

Investments_in_Unconsolidated_2

Investments in Unconsolidated Entities (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Reconciliation of members' and partners' equity to the Company's Carrying Value
Total membersb and partnersb equity	$1,234,612		$798,590
Equity of other members and partners	1,079,695		777,646
Companybs net investment in unconsolidated entities	154,917		20,944
Basis differences	238,606	[1]	137,259	[1]
Advances to and on behalf of affiliates	15,450		32,119
Assets - Investments in and advances to unconsolidated entities	620,466		447,165
Liabilities - Cash distributions and losses in excess of investments in unconsolidated entities	-211,493		-256,843
Total Investments in Unconsolidated Entities, net	$408,973		$190,322
[1]	Represents the aggregate difference between the Companybs historical cost basis and the basis reflected at the equity method venture level, which is typically amortized over the life of the related assets or liabilities. Basis differences relate to certain acquisition, transaction and other costs, as well as other-than-temporary impairments not reflected in the net assets at the equity method venture level.

Investments_in_Unconsolidated_3

Investments in Unconsolidated Entities (Details 1) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Real Estate
Completed rental properties	$7,307,233,000		$7,753,561,000
Projects under construction and development	535,479,000		477,957,000
Land inventory	128,688,000		97,469,000
Total Real Estate	7,971,400,000		8,328,987,000
Less accumulated depreciation	-1,469,328,000		-1,555,965,000
Real Estate, net	6,502,072,000		6,773,022,000
Cash and equivalents	280,206,000		326,518,000	333,220,000	217,486,000
Other restricted cash	347,534,000		266,530,000
Other assets	415,316,000		409,366,000
Mortgage debt and notes payable, nonrecourse	4,351,506,000		4,238,201,000
Members' and partners' equity	798,590,000		1,234,612,000
Operations:
Operating expenses	-665,818,000	-600,134,000	-634,293,000	-661,232,000
Depreciation and amortization	-273,054,000	-189,168,000	-230,466,000	-212,254,000
Net gain (loss) on land held for divestiture activity	-7,382,000	-4,457,000	0	6,480,000
Interest and other income	52,283,000	42,245,000	42,780,000	45,545,000
Discontinued operations:
Gain on disposition of rental properties	41,831,000		28,100,000	100,900,000
Discontinued operations subtotal	-31,336,000		25,094,000	104,015,000
Impairment of investments in unconsolidated entities	0		-3,124,000	-390,000
Impairment of investments in unconsolidated entities with land held for divestiture	0		0	-40,406,000
Net earnings (pre-tax) from unconsolidated entities	109,163,000	41,937,000	86,908,000	44,631,000
Equity Method Investee [Member]
Real Estate
Completed rental properties	8,142,158,000		7,982,583,000
Projects under construction and development	205,465,000		840,797,000
Land inventory	120,592,000		114,301,000
Total Real Estate	8,468,215,000		8,937,681,000
Less accumulated depreciation	-1,676,354,000		-1,716,329,000
Real Estate, net	6,791,861,000		7,221,352,000
Cash and equivalents	156,491,000		211,533,000
Restricted cash - military housing bond funds	116,372,000		161,460,000
Other restricted cash	316,315,000		381,190,000
Other assets	1,074,972,000		1,042,420,000
Total Assets	8,456,011,000		9,017,955,000
Mortgage debt and notes payable, nonrecourse	7,113,515,000		7,176,088,000
Other liabilities	543,906,000		607,255,000
Members' and partners' equity	798,590,000		1,234,612,000
Total Liabilities and Members' and Partners' Equity	8,456,011,000		9,017,955,000
Operations:
Revenues	1,160,230,000		1,331,875,000	1,082,073,000
Operating expenses	-669,548,000		-791,964,000	-605,940,000
Depreciation and amortization	-207,731,000		-253,081,000	-205,002,000
Net gain (loss) on land held for divestiture activity	2,742,000		0	-102,000
Interest and other income	14,797,000		22,693,000	17,676,000
Net gain on disposition of full or partial interest in rental properties	0		36,356,000	131,027,000
Interest expense including extinguishment of debt	-311,283,000		-358,946,000	-320,566,000
Earnings (loss) from continuing operations	-10,793,000		-13,067,000	99,166,000
Discontinued operations:
Operating earnings from rental properties	4,623,000		215,000	5,387,000
Gain on disposition of rental properties	68,311,000		0	0
Discontinued operations subtotal	72,934,000		215,000	5,387,000
Net earnings (loss) (pre-tax)	62,141,000		-12,852,000	104,553,000
Company's portion of net earnings (loss) (pre-tax)	75,014,000		55,288,000	69,320,000
Impairment of investments in unconsolidated entities	0		-3,124,000	-390,000
Impairment of investments in unconsolidated entities with land held for divestiture	0		0	-40,406,000
Net gain on disposition of full or partial interest in equity method investments	34,149,000		34,744,000	16,107,000
Net earnings (pre-tax) from unconsolidated entities	$109,163,000		$86,908,000	$44,631,000

Investments_in_Unconsolidated_4

Investments in Unconsolidated Entities (Details 2) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Schedule of Equity Method Investments [Line Items]
Net gain on disposition of full or partial interest in rental properties	$68,311,000	$36,356,000	$131,027,000
Company's portion of gain on disposition of full or partial interest in rental properties	34,281,000	17,677,000	34,959,000
Net gain (loss) on disposition of full or partial interest in equity method investments	34,149,000	34,744,000	16,107,000
Golden Gate [Member]
Schedule of Equity Method Investments [Line Items]
Net gain on disposition of full or partial interest in rental properties	0	33,881,000	0
Liberty Center [Member]
Schedule of Equity Method Investments [Line Items]
Net gain on disposition of full or partial interest in rental properties	2,829,000	2,475,000	0
Westin Convention Center [Member]
Schedule of Equity Method Investments [Line Items]
Net gain on disposition of full or partial interest in rental properties	65,482,000	0	0
8 Spruce Street [Member]
Schedule of Equity Method Investments [Line Items]
Net gain on disposition of full or partial interest in rental properties	0	0	131,027,000
Westwood Reserve [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	8,904,000	0
Legacy Crossroads [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	6,216,000	0
Colonial Grand [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	4,904,000	0
Legacy Arboretum [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	3,257,000	0
Woodgate/Evergreen Farms [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	2,346,000	0
Barrington Place [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	1,515,000	0
Mall at Stonecrest [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	7,952,000	0
Charleston Town Center [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	27,080,000	0	0
Marketplace at Riverpark [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	8,579,000	0	0
Plaza at Robinson Town Center [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	-1,510,000	0	0
Village at Gulfstream Park [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	0	14,479,000
Chagrin Plaza I & II [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	0	0	1,628,000
Other [Member]
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on disposition of full or partial interest in equity method investments	$0	($350,000)	$0

Other_Assets_Details

Other Assets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Components of other assets
Lease procurement costs, net	$101,773	$104,733
Prepaid expenses and other deferred costs, net	112,484	142,465
Intangible assets, net	123,778	105,364
Mortgage procurement costs, net	71,331	62,754
Other Assets	$409,366	$415,316

Other_Assets_Details_1

Other Assets (Details 1) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
2015	$7,526
2016	6,786
2017	6,510
2018	6,811
2019	$3,165

Other_Assets_Details_Textual

Other Assets (Details Textual) (USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Other Assets (Textual) [Abstract]
Amortization expense related to intangible assets	$4,311	$3,509	$4,715

Mortgage_Debt_and_Notes_Payabl2

Mortgage Debt and Notes Payable, Nonrecourse (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	$4,238,201,000	$4,351,506,000
Mortgage debt and notes payable, nonrecourse		4,579,506,000
Total weighted average rate	4.76%	4.66%
Operating Properties [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	4,114,607,000
Mortgage debt and notes payable, nonrecourse		4,179,669,000
Development Projects [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	123,594,000
Mortgage debt and notes payable, nonrecourse		399,837,000
Fixed Rate Debt [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	2,293,591,000
Mortgage debt and notes payable, nonrecourse		2,581,337,000
Total weighted average rate	5.57%	5.28%
Fixed Rate Debt [Member] | Operating Properties [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	2,234,801,000
Mortgage debt and notes payable, nonrecourse		2,286,555,000
Fixed Rate Debt [Member] | Development Projects [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	58,790,000
Mortgage debt and notes payable, nonrecourse		294,782,000
Variable Rate Debt, Taxable [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	1,347,765,000	1,432,725,000
Total weighted average rate	4.85%	4.81%
Variable Rate Debt, Taxable [Member] | Operating Properties [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	1,327,961,000	1,381,225,000
Variable Rate Debt, Taxable [Member] | Development Projects [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	19,804,000	51,500,000
Variable Rate Debt, Tax-Exempt [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	596,845,000	565,444,000
Total weighted average rate	1.45%	1.47%
Variable Rate Debt, Tax-Exempt [Member] | Operating Properties [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	551,845,000	511,889,000
Variable Rate Debt, Tax-Exempt [Member] | Development Projects [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage debt and notes payable, nonrecourse	$45,000,000	$53,555,000

Mortgage_Debt_and_Notes_Payabl3

Mortgage Debt and Notes Payable, Nonrecourse (Details 1) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Composition of mortgage debt and notes payable, nonrecourse maturities
Total maturities in 2015	$508,376
Total maturities in 2016	142,979
Total maturities in 2017	1,178,626
Total maturities in 2018	271,688
Total maturities in 2019	300,338
Total maturities thereafter	1,836,194
Total mortgage debt and notes payable, nonrecourse	$4,238,201	$4,351,506

Mortgage_Debt_and_Notes_Payabl4

Mortgage Debt and Notes Payable, Nonrecourse Mortgage Debt and Notes Payable, Nonrecourse (Details Textual) (USD $)	Dec. 31, 2014
Short-term Debt [Line Items]
Mortgage debt in default	$45,000,000
Restricted bond proceeds [Member]
Short-term Debt [Line Items]
Collateral	37,500,000
Cash in escrow [Member]
Short-term Debt [Line Items]
Collateral	10,000,000
Equity letter of credit [Member]
Short-term Debt [Line Items]
Collateral	$9,300,000

Revolving_Credit_Facility_Deta

Revolving Credit Facility (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Maximum borrowings	$500,000,000	$500,000,000
Less outstanding balances:
Borrowings	0	0
Letters of credit	85,768,000	59,760,000
Surety bonds	0	0
Available credit	$414,232,000	$440,240,000

Revolving_Credit_Facility_Deta1

Revolving Credit Facility (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
	option
Line of Credit Facility [Line Items]
Total available borrowings	$500,000,000	$500,000,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Total available borrowings	500,000,000
Number of Credit Facility extension options	1
Term of Credit Facility extension option	12 months
Amount of available borrowing that can be used for letters of credit and/or surety bonds	100,000,000
Common Class A [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum Class A common stock repurchase amount	100,000,000
Common Class A or B [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum dividend restriction in any four fiscal quarter period	$24,000,000
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Variable rate basis spread of debt instrument	3.50%

Convertible_Senior_Debt_Detail

Convertible Senior Debt (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Oct. 31, 2009	Jul. 31, 2011	Jul. 31, 2013
Schedule of convertible senior debt
Convertible senior debt	$700,000,000	$700,000,000
Convertible Senior Notes [Member]
Schedule of convertible senior debt
Convertible senior debt	700,000,000	700,000,000
Convertible Senior Notes [Member] | Notes due 2016 [Member]
Schedule of convertible senior debt
Interest rate	5.00%	5.00%	5.00%
Convertible senior debt	50,000,000	50,000,000
Convertible Senior Notes [Member] | Notes due 2018 [Member]
Schedule of convertible senior debt
Interest rate	4.25%	4.25%		4.25%
Convertible senior debt	350,000,000	350,000,000
Convertible Senior Notes [Member] | Notes due 2020 [Member]
Schedule of convertible senior debt
Interest rate	3.63%	3.63%			3.63%
Convertible senior debt	$300,000,000	$300,000,000

Convertible_Senior_Debt_Detail1

Convertible Senior Debt (Details 1) (USD $)	11 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Interest incurred, capitalized and paid
Interest incurred	$301,735		$258,816	$349,418
Interest capitalized	-16,693		-24,411	-96,094
Net interest expense	285,042	228,980	234,405	253,324
Interest incurred from discontinued operations	12,015		5,538	23,167
Cash paid for interest (net of amount capitalized)	$292,692		$235,373	$291,509

Convertible_Senior_Debt_Detail2

Convertible Senior Debt (Details Textuals) (USD $)	12 Months Ended	1 Months Ended	0 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2014	31-May-11	Apr. 16, 2013	Dec. 31, 2013	Jan. 31, 2013	Oct. 31, 2009	Jul. 31, 2011	Jul. 31, 2013
	D
Notes due 2016 [Member]
Debt Instrument [Line Items]
Principal amount of senior notes	$1,000
Notes due 2018 [Member]
Debt Instrument [Line Items]
Principal amount of senior notes	1,000
Threshold trading days for senior note conversion	20
Threshold consecutive trading days for senior note conversion	30 days
Minimum number of days after mailing conversion rights termination notice for effective termination date	20 days
Notes due 2020 [Member]
Debt Instrument [Line Items]
Principal amount of senior notes	1,000
Threshold trading days for senior note conversion	20
Threshold consecutive trading days for senior note conversion	30 days
Minimum number of days after mailing conversion rights termination notice for effective termination date	30 days
Maximum number of days after mailing redemption notice for effective redemption date	60 days
Convertible Senior Notes [Member] | Notes due 2016 [Member]
Debt Instrument [Line Items]
Conversion price per share	$13.91
Convertible senior notes issued						200,000,000
Interest rate	5.00%			5.00%		5.00%
Senior notes exchanged for Class A common stock		150,000,000
Effective conversion price per share	$16.37
Convertible Senior Notes [Member] | Notes due 2018 [Member]
Debt Instrument [Line Items]
Conversion price per share	$21.67
Convertible senior notes issued							350,000,000
Interest rate	4.25%			4.25%			4.25%
Convertible Senior Notes [Member] | Notes due 2020 [Member]
Debt Instrument [Line Items]
Conversion price per share	$24.21
Convertible senior notes issued								$300,000,000
Interest rate	3.63%			3.63%				3.63%
Common Class A [Member]
Debt Instrument [Line Items]
Shares of Class A common stock issued in exchange of debt	964,000		9,549,721	62,000	700,000
Number of common shares issued upon conversion of senior notes	3.3
Common Class A [Member] | Notes due 2016 [Member]
Debt Instrument [Line Items]
Shares of Class A common stock issued in exchange of debt		13,218,332
Number of common shares issued upon conversion of senior notes	71.8894
Common Class A [Member] | Notes due 2018 [Member]
Debt Instrument [Line Items]
Number of common shares issued upon conversion of senior notes	46.1425
Threshold percentage of stock price trigger for senior note conversion	130.00%
Stock price trigger of senior note conversion	$28.17
Common Class A [Member] | Notes due 2020 [Member]
Debt Instrument [Line Items]
Number of common shares issued upon conversion of senior notes	41.3129
Threshold percentage of stock price trigger for senior note conversion	130.00%
Stock price trigger of senior note conversion	$31.47
Minimum [Member] | Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Conversion price per share	$13.91
Maximum [Member] | Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Conversion price per share	$24.21

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	$1,125,364,000
Other Assets [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Asset Derivative, Current Notional	479,200,000	18,970,000
Asset Derivative, Fair Value	6,493,000	903,000
Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Asset Derivative, Current Notional	306,932,000	447,532,000
Asset Derivative, Fair Value	1,869,000	155,000
Accounts Payable, Accrued Expenses and Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	1,086,939,000	1,301,144,000
Liability Derivative, Fair Value	87,264,000	107,630,000
Accounts Payable, Accrued Expenses and Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	38,425,000	39,052,000
Liability Derivative, Fair Value	15,098,000	15,477,000
Interest rate caps [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Asset Derivative, Current Notional	330,000,000
Asset Derivative, Fair Value	114,000
Interest rate caps [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Asset Derivative, Current Notional	205,522,000	447,532,000
Asset Derivative, Fair Value	12,000	155,000
Interest rate caps [Member] | Accounts Payable, Accrued Expenses and Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	0
Liability Derivative, Fair Value	0
Interest rate caps [Member] | Accounts Payable, Accrued Expenses and Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	0	0
Liability Derivative, Fair Value	0	0
Interest rate swaps [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Asset Derivative, Current Notional	0	0
Asset Derivative, Fair Value	0	0
Interest rate swaps [Member] | Accounts Payable, Accrued Expenses and Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	869,154,000	961,359,000
Liability Derivative, Fair Value	75,281,000	97,858,000
TROR [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	256,210,000
TROR [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Asset Derivative, Current Notional	149,200,000	18,970,000
Asset Derivative, Fair Value	6,379,000	903,000
TROR [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Asset Derivative, Current Notional	101,410,000	0
Asset Derivative, Fair Value	1,857,000	0
TROR [Member] | Accounts Payable, Accrued Expenses and Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	217,785,000	339,785,000
Liability Derivative, Fair Value	11,983,000	9,772,000
TROR [Member] | Accounts Payable, Accrued Expenses and Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Fair Value of Derivative Instruments
Liability Derivative, Current Notional	38,425,000	39,052,000
Liability Derivative, Fair Value	$15,098,000	$15,477,000

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities (Details 1) (Cash Flow Hedging [Member], USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Derivative instruments gain loss in financial statements
Gain (loss) recognized in OCI (effective portion)	$37,094,000	$22,733,000	$21,601,000
Gain (loss) reclassified from accumulated OCI, effective amount	-3,381,000	-2,575,000	-4,258,000
Gain (loss) reclassified from accumulated OCI, ineffective amount	-2,959,000	-3,673,000	14,000
Interest rate caps and interest rate swaps [Member]
Derivative instruments gain loss in financial statements
Gain (loss) recognized in OCI (effective portion)	0	22,733,000
Interest rate caps and interest rate swaps [Member] | Interest expense [Member]
Derivative instruments gain loss in financial statements
Gain (loss) reclassified from accumulated OCI, effective amount		-2,516,000
Gain (loss) reclassified from accumulated OCI, ineffective amount		-7,000
Interest rate caps and interest rate swaps [Member] | Equity in earnings [Member]
Derivative instruments gain loss in financial statements
Gain (loss) reclassified from accumulated OCI, effective amount	-86,000
Gain (loss) reclassified from accumulated OCI, ineffective amount	4,000
Interest rate swap [Member]
Derivative instruments gain loss in financial statements
Gain (loss) recognized in OCI (effective portion)		0
Interest rate swap [Member] | Discontinued operations [Member]
Derivative instruments gain loss in financial statements
Gain (loss) reclassified from accumulated OCI, effective amount		0
Gain (loss) reclassified from accumulated OCI, ineffective amount		-3,666,000
Interest rate swaps [Member]
Derivative instruments gain loss in financial statements
Gain (loss) recognized in OCI (effective portion)	37,094,000	0
Interest rate swaps [Member] | Interest expense [Member]
Derivative instruments gain loss in financial statements
Gain (loss) reclassified from accumulated OCI, effective amount	-3,295,000
Gain (loss) reclassified from accumulated OCI, ineffective amount	-2,963,000
Interest rate swaps [Member] | Equity in earnings [Member]
Derivative instruments gain loss in financial statements
Gain (loss) reclassified from accumulated OCI, effective amount		-59,000
Gain (loss) reclassified from accumulated OCI, ineffective amount		0
Interest rate caps, interest rate swaps and Treasury options [Member]
Derivative instruments gain loss in financial statements
Gain (loss) recognized in OCI (effective portion)			21,601,000
Interest rate caps, interest rate swaps and Treasury options [Member] | Interest expense [Member]
Derivative instruments gain loss in financial statements
Gain (loss) reclassified from accumulated OCI, effective amount			-3,916,000
Gain (loss) reclassified from accumulated OCI, ineffective amount			0
Interest rate caps, interest rate swaps and Treasury options [Member]
Derivative instruments gain loss in financial statements
Gain (loss) recognized in OCI (effective portion)			0
Interest rate caps, interest rate swaps and Treasury options [Member] | Equity in earnings [Member]
Derivative instruments gain loss in financial statements
Gain (loss) reclassified from accumulated OCI, effective amount			-342,000
Gain (loss) reclassified from accumulated OCI, ineffective amount			$14,000

Derivative_Instruments_and_Hed4

Derivative Instruments and Hedging Activities (Details 2) (USD $)	11 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2014		Jan. 31, 2013
Not Designated as Hedging Instrument [Member]
Impact of gains and losses related to derivative instruments
Net gain (loss) recognized on derivatives	($1,410)		$2,253		$11,646
TROR [Member] | Not Designated as Hedging Instrument [Member]
Impact of gains and losses related to derivative instruments
Net gain (loss) recognized on derivatives	-1,091		2,236		12,568
Interest rate caps and interest rate swaps [Member] | Not Designated as Hedging Instrument [Member]
Impact of gains and losses related to derivative instruments
Net gain (loss) recognized on derivatives	-319		17		-922
Fair Value Hedging [Member] | TROR [Member] | Designated as Hedging Instrument [Member]
Impact of gains and losses related to derivative instruments
Net gain (loss) recognized on derivatives	$1,081	[1]	$3,265	[1]	($770)	[1]
[1]	The net gain (loss) recognized in interest expense from the change in fair value of the underlying TROR borrowings was $(3,265), $(1,081) and $770 for theB year ended DecemberB 31,B 2014, the 11B months ended DecemberB 31,B 2013 and the year ended JanuaryB 31,B 2013, respectively, offsetting the gain (loss) recognized on the TROR.

Derivative_Instruments_and_Hed5

Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities (Details 3) (USD $)	Dec. 31, 2014
Derivative [Line Items]
Notional Amount	$1,125,364,000
Fair Value Prior to Nonperformance Risk	106,150,000
Nonperformance Risk	-3,788,000
Collateral Posted	52,981,000
Property Specific Swaps [Member]
Derivative [Line Items]
Notional Amount	669,154,000
Fair Value Prior to Nonperformance Risk	79,126,000
Nonperformance Risk	-3,846,000
Collateral Posted	0
TROR [Member]
Derivative [Line Items]
Notional Amount	256,210,000
Fair Value Prior to Nonperformance Risk	27,023,000
Nonperformance Risk	58,000
Collateral Posted	52,811,000
Corporate Aggregate Swaps [Member]
Derivative [Line Items]
Notional Amount	200,000,000
Fair Value Prior to Nonperformance Risk	1,000
Nonperformance Risk	0
Collateral Posted	$170,000

Derivative_Instruments_and_Hed6

Derivative Instruments and Hedging Activities (Details Textual) (USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Derivative [Line Items]
SIFMA rate		0.03%
Minimum [Member] | Interest rate swaps [Member]
Derivative [Line Items]
Derivative, term of contract		1 year
Minimum [Member] | Interest rate caps [Member]
Derivative [Line Items]
Derivative, term of contract		1 year
Maximum [Member] | Interest rate swaps [Member]
Derivative [Line Items]
Derivative, term of contract		10 years
Maximum [Member] | Interest rate caps [Member]
Derivative [Line Items]
Derivative, term of contract		3 years
Designated as Hedging Instrument [Member] | TROR [Member]
Derivative [Line Items]
Notional amount		$366,985
Cash Flow Hedging [Member]
Derivative [Line Items]
Increase to interest expenses related to hedge ineffectiveness	2,963	3,673
Loss on cash flow hedges to be reclassified within next twelve months		24,152
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | TROR [Member]
Derivative [Line Items]
Net gain (loss) from change in fair value of underlying TROR borrowings recognized in interest expense	($1,081)	($3,265)	$770

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Fair value adjustment to the borrowings subject to TROR	$5,346,196,000	$5,442,542,000
Fair value measurement, recurring basis [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Fair value adjustment to the borrowings subject to TROR	5,604,000	8,869,000
Redeemable noncontrolling interest	-183,038,000	-171,743,000
Total fair value	-271,434,000	-284,923,000
Fair value measurement, recurring basis [Member] | Interest rate caps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	126,000	155,000
Fair value measurement, recurring basis [Member] | Interest rate swaps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative liabilities	-75,281,000	-97,858,000
Fair value measurement, recurring basis [Member] | TROR [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	8,236,000	903,000
Derivative liabilities	-27,081,000	-25,249,000
Level 1 [Member] | Fair value measurement, recurring basis [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Fair value adjustment to the borrowings subject to TROR	0	0
Redeemable noncontrolling interest	0	0
Total fair value	0	0
Level 1 [Member] | Fair value measurement, recurring basis [Member] | Interest rate caps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	0	0
Level 1 [Member] | Fair value measurement, recurring basis [Member] | Interest rate swaps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative liabilities	0	0
Level 1 [Member] | Fair value measurement, recurring basis [Member] | TROR [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Level 2 [Member] | Fair value measurement, recurring basis [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Fair value adjustment to the borrowings subject to TROR	0	0
Redeemable noncontrolling interest	0	0
Total fair value	-1,619,000	-343,000
Level 2 [Member] | Fair value measurement, recurring basis [Member] | Interest rate caps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	126,000	155,000
Level 2 [Member] | Fair value measurement, recurring basis [Member] | Interest rate swaps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative liabilities	-1,745,000	-498,000
Level 2 [Member] | Fair value measurement, recurring basis [Member] | TROR [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Level 3 [Member] | Fair value measurement, recurring basis [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Fair value adjustment to the borrowings subject to TROR	5,604,000	8,869,000
Redeemable noncontrolling interest	-183,038,000	-171,743,000
Total fair value	-269,815,000	-284,580,000
Level 3 [Member] | Fair value measurement, recurring basis [Member] | Interest rate caps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	0	0
Level 3 [Member] | Fair value measurement, recurring basis [Member] | Interest rate swaps [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative liabilities	-73,536,000	-97,360,000
Level 3 [Member] | Fair value measurement, recurring basis [Member] | TROR [Member]
Financial assets and liabilities and redeemable noncontrolling interests on a recurring basis
Derivative assets	8,236,000	903,000
Derivative liabilities	($27,081,000)	($25,249,000)

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 1) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	($360,828,000)	($284,580,000)
Loss attributable to redeemable noncontrolling interest	16,847,000	17,095,000
Total realized and unrealized gains (losses):
Included in earnings	-1,091,000	2,236,000
Included in other comprehensive income	29,146,000	23,824,000
Included in additional paid-in capital	50,546,000	-28,390,000
Settlement	-19,200,000
Ending balance	-284,580,000	-269,815,000
Redeemable Noncontrolling Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	-239,136,000	-171,743,000
Loss attributable to redeemable noncontrolling interest	16,847,000	17,095,000
Total realized and unrealized gains (losses):
Included in earnings	0	0
Included in other comprehensive income	0	0
Included in additional paid-in capital	50,546,000	-28,390,000
Settlement	0
Ending balance	-171,743,000	-183,038,000
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	-126,506,000	-97,360,000
Loss attributable to redeemable noncontrolling interest	0	0
Total realized and unrealized gains (losses):
Included in earnings	0	0
Included in other comprehensive income	29,146,000	23,824,000
Included in additional paid-in capital	0	0
Settlement	0
Ending balance	-97,360,000	-73,536,000
Net TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	-5,136,000	-24,346,000
Loss attributable to redeemable noncontrolling interest	0	0
Total realized and unrealized gains (losses):
Included in earnings	-10,000	5,501,000
Included in other comprehensive income	0	0
Included in additional paid-in capital	0	0
Settlement	-19,200,000
Ending balance	-24,346,000	-18,845,000
Fair value adjustment to the borrowings subject to TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,950,000	8,869,000
Loss attributable to redeemable noncontrolling interest	0	0
Total realized and unrealized gains (losses):
Included in earnings	-1,081,000	-3,265,000
Included in other comprehensive income	0	0
Included in additional paid-in capital	0	0
Settlement	0
Ending balance	8,869,000	5,604,000
Total TROR Related [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	4,814,000	-15,477,000
Loss attributable to redeemable noncontrolling interest	0	0
Total realized and unrealized gains (losses):
Included in earnings	-1,091,000	2,236,000
Included in other comprehensive income	0	0
Included in additional paid-in capital	0	0
Settlement	-19,200,000
Ending balance	($15,477,000)	($13,241,000)

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 2) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Jan. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value	($269,815)	($284,580)	($360,828)
Fair value adjustment to the borrowings subject to TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value	5,604	8,869	9,950
Potential future exposure [Member] | Fair value measurement, recurring basis [Member] | Credit valuation adjustment of interest rate swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value	3,740
Credit spread	4.00%
Third party bond pricing [Member] | Fair value measurement, recurring basis [Member] | TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value	-18,845
Third party bond pricing [Member] | Fair value measurement, recurring basis [Member] | Fair value adjustment to the borrowings subject to TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value	$5,604
Third party bond pricing [Member] | Minimum [Member] | Fair value measurement, recurring basis [Member] | TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Bond valuation	$79.59
Third party bond pricing [Member] | Minimum [Member] | Fair value measurement, recurring basis [Member] | Fair value adjustment to the borrowings subject to TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Bond valuation	$79.59
Third party bond pricing [Member] | Maximum [Member] | Fair value measurement, recurring basis [Member] | TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Bond valuation	$109.71
Third party bond pricing [Member] | Maximum [Member] | Fair value measurement, recurring basis [Member] | Fair value adjustment to the borrowings subject to TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Bond valuation	$109.71

Fair_Value_Measurements_Detail3

Fair Value Measurements (Details 3) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value of nonrecourse mortgage debt and notes payable (including land held for divestiture debt), bank revolving credit facility and senior and subordinated debt
Carrying value	$4,938,201,000	$5,279,506,000
Fair value	5,346,196,000	5,442,542,000
Fixed Rate Debt [Member]
Fair Value of nonrecourse mortgage debt and notes payable (including land held for divestiture debt), bank revolving credit facility and senior and subordinated debt
Carrying value	2,993,591,000	3,281,337,000
Fair value	3,421,373,000	3,488,406,000
Variable Rate Debt [Member]
Fair Value of nonrecourse mortgage debt and notes payable (including land held for divestiture debt), bank revolving credit facility and senior and subordinated debt
Carrying value	1,944,610,000	1,998,169,000
Fair value	$1,924,823,000	$1,954,136,000

Fair_Value_Measurements_Detail4

Fair Value Measurements (Details Textual) (USD $)	Mar. 31, 2014	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment to redeemable noncontrolling interest	$28,390
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of interest rate swaps		1
TROR [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of TROR borrowings subject to fair value adjustments		366,985

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (Completion Guarantee [Member], USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Guarantor Obligations [Line Items]
Total Costs	$2,734,133
Percentage Completed	68.00%
Openings and acquisitions [Member]
Guarantor Obligations [Line Items]
Total Costs	1,548,943
Percentage Completed	97.00%
Under construction [Member]
Guarantor Obligations [Line Items]
Total Costs	$1,185,190
Percentage Completed	30.00%

Commitments_and_Contingencies_2

Commitments and Contingencies (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	12-May-10
Commitments and Contingencies [Line Items]
Guarantees associated with various obligations	$2,850,000
Outstanding letters of credit	85,768,000	59,760,000
The Nets [Member]
Commitments and Contingencies [Line Items]
Percentage of ownership sold			80.00%
Tax Indemnity Guarantee [Member]
Commitments and Contingencies [Line Items]
Maximum exposure/payment	154,855,000
Liability for agreement with historic tax credit investment partner	13,423,000
Number of historic tax credit partners	1
Reversal of tax credit income previously recognized	11,746,000
Guarantee of Indebtedness of Others [Member]
Commitments and Contingencies [Line Items]
Maximum exposure/payment	1,241,231,000
MHPI Projects Guarantee [Member]
Commitments and Contingencies [Line Items]
Maximum exposure/payment	198,951,000
Completion Guarantee [Member]
Commitments and Contingencies [Line Items]
Maximum exposure/payment	2,734,133,000
Indemnification Agreement [Member]
Commitments and Contingencies [Line Items]
Insurance coverage related to NBA indemnity guarantee	100,000,000
Openings and Acquisitions [Member] | Completion Guarantee [Member]
Commitments and Contingencies [Line Items]
Maximum exposure/payment	$55,932,000

Capital_Stock_Detail_Textuals

Capital Stock (Detail Textuals) (USD $)	0 Months Ended		2 Months Ended	11 Months Ended	12 Months Ended		1 Months Ended	0 Months Ended
	Apr. 16, 2013	Mar. 13, 2013	Dec. 13, 2012	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013	Mar. 14, 2013	Mar. 15, 2013	Jul. 12, 2013
Class of Stock [Line Items]
Cash payment for additional exchange consideration, accrued interest and in lieu of fractional shares	$4,860,000
Cash payments for interest payable and in lieu of fractional shares for put transaction									1,088,000
Cash payments for additional exchange consideration			19,069,000	0	0	-19,069,000
Redeemed stock, aggregate amount of liquidation preference plus dividend				5,063,000
Amount received upon settlement of equity call hedge		10,231,000		10,231,000
Preferred dividends declared and paid				185,000		13,060,000
Common Class A [Member]
Class of Stock [Line Items]
Common stock voting rights, number of board members elected					4
Common stock voting rights, votes per share					one vote per share
Shares of Class A common stock issued in exchange of debt	9,549,721			62,000	964,000	700,000
Number of shares received by the note holder upon a put									4,128,806
Issuance of Class A shares in exchange for Series A preferred stock, shares			13,852,435	363,000		13,852,000	362,990
Number of common shares in lieu of preferred stock liquidation					3.3
Exchange of preferred stock, initial conversion price			$15.12		$15.12
Minimum percentage of initial conversion price					150.00%
Number of initial conversion days for determination of conversion price					20
Number of consecutive trading days					30
Shares received upon settlement of equity call hedge		765,134
Value of shares received upon settlement of equity call hedge		$16.82
Amount received upon settlement of equity call hedge		12,868,000
Common Class B [Member]
Class of Stock [Line Items]
Common stock voting rights, number of board members elected					9
Common stock voting rights, votes per share					ten votes per share
Shares of Class A common stock issued in exchange of debt				-62,000	-964,000	-700,000
Series A Preferred Stock
Class of Stock [Line Items]
Issuance of Class A shares in exchange for Series A preferred stock, shares			4,188,952	-110,000		-4,189,000	109,768
Preferred stock, liquidation preference					$50
Exchange of preferred stock, aggregate liquidation preference amount			209,447,600
Remaining shares of Series A preferred stock redeemed				101,000				101,270
Redeemed stock, aggregate amount of liquidation preference plus dividend				5,063,000				5,100,000
Preferred dividends declared and paid				185,000	0	13,060,000
2014 Senior Notes [Member]
Class of Stock [Line Items]
Senior notes exchanged for Class A common stock	138,853,000
Aggregate principal amount of senior notes put to the company									$60,033,000

Class_A_Common_Units_and_Relat1

Class A Common Units and Related Party Transactions (Detail Textual) (USD $)	12 Months Ended	1 Months Ended	11 Months Ended	12 Months Ended	1 Months Ended
	Dec. 31, 2014	31-May-08	Dec. 31, 2013	Jan. 31, 2013	Jun. 30, 2014	Jan. 31, 2014	Aug. 31, 2006
		project				project	property
Exchange of Class A Common Units for Class A shares	$0
Units outstanding	2,973,190		3,646,755
Carrying value of Class A Common Units	151,663,000		186,021,000
Development fees payable	11,000,000
Common Class A [Member]
Exchange of Class A Common Units for Class A shares	224,000
BCR transaction [Member]
Number of retail, office and residential operating properties							30
Number of development projects	5
Tax indemnity payment accrual	1,646,000
Tax indemnity payment	1,235,000		0	0
Number of projects		2				3
Cost of interest transferred to affiliates of the company						14,286,000
Amount to be paid over 15 year period		121,000,000
Payment period of cost of interest transferred		15 years
Initial cash received by BCR Entities		49,249,000
Initial discounted amount		56,495,000
Obligation included in accounts payable, accrued expenses and other liabilities	3,330,000		13,013,000
BCR exchange transaction [Member]
Exchange of Class A Common Units for Class A shares, units exchanged					673,565
BCR exchange transaction [Member] | Common Class A [Member]
Exchange of Class A Common Units for Class A shares, shares issued					673,565
Exchange of Class A Common Units for Class A shares					224,000
Noncontrolling Interest [Member]
Exchange of Class A Common Units for Class A shares	-34,358,000
Noncontrolling Interest [Member] | BCR exchange transaction [Member]
Exchange of Class A Common Units for Class A shares					34,358,000
Additional Paid-in Capital [Member]
Exchange of Class A Common Units for Class A shares	34,134,000
Additional Paid-in Capital [Member] | BCR exchange transaction [Member]
Exchange of Class A Common Units for Class A shares					34,134,000

Leases_Details

Leases (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Minimum future rental income to be received on non-cancelable operating leases
2015	$393,356
2016	368,671
2017	346,959
2018	319,628
2019	270,114
Later years	1,367,021
Total rental income	$3,065,749

Leases_Details_1

Leases (Details 1) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Minimum fixed rental payments under long-term leases
2015	$11,632
2016	10,899
2017	5,963
2018	5,637
2019	5,566
Later years	142,259
Total rental payment	$181,956

Leases_Details_2

Leases (Details 2) (USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Summarizes rent expense
Rent expense	$8,243	$11,013	$9,136

Commercial_Group_Land_Sales_De

Commercial Group Land Sales (Details Textual) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 31, 2011	Apr. 30, 2012	Jan. 31, 2013	Jan. 31, 2012
	acre
Commercial Group Land Sales (Textual) [Abstract]
Area of land parcel sold (in acres)	10
Sales price of land parcel and air rights	$40,000,000
Cash deposit received				7,000,000
Amount of purchase price received		33,000,000
Gain on sale of land parcel and air rights			$36,484,000

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation costs	$16,197	$19,673	$14,751
Less amount capitalized into qualifying real estate projects	-5,826	-5,944	-5,396
Amount charged to operating expenses	10,371	13,729	9,355
Depreciation expense on capitalized stock-based compensation	876	800	827
Total stock-based compensation expense	11,247	14,529	10,182
Deferred income tax benefit	4,111	5,426	3,671
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation costs	3,051	3,381	3,101
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation costs	10,672	12,279	10,324
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation costs	$2,474	$4,013	$1,326

StockBased_Compensation_Detail1

Stock-Based Compensation (Details 1) (Stock Options [Member])	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.78%	1.91%	1.10%
Expected volatility	74.10%	71.50%	74.10%
Expected dividend yield	0.00%	0.00%	0.00%
Expected term (in years)	5 years 6 months	5 years 6 months	5 years 6 months

StockBased_Compensation_Detail2

Stock-Based Compensation (Details 2) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares outstanding at January 1, 2014	4,082,065
Shares granted	233,914
Shares exercised	-62,175
Shares forfeited/expired	-126,869
Shares outstanding at December 31, 2014	4,126,935
Options, exercisable (fully vested) at December 31, 2014	3,275,479
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Outstanding at January 1, 2014	$34.98
Weighted Average Exercise Price, Granted	$18.73
Weighted Average Exercise Price, Exercised	$12.70
Weighted Average Exercise Price, Forfeited/expired	$45.74
Weighted Average Exercise Price, Outstanding at December 31, 2014	$34.07
Weighted Average Exercise Price, exercisable (fully vested) at December 31, 2014	$38.42
Weighted Average Remaining Contractual Term, Outstanding at December 31, 2014	45 months
Weighted Average Remaining Contractual Term, Exercisable (fully vested) at December 31, 2014	32 months
Intrinsic Value, Outstanding at December 31, 2014	$9,575
Intrinsic Value, Exercisable (fully vested) at December 31, 2014	$6,176

StockBased_Compensation_Detail3

Stock-Based Compensation (Details 3) (Restricted Stock [Member], USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Restricted Stock [Member]
Restricted Shares, Nonvested, Number of Shares [Roll Forward]
Unvested shares at January 1, 2014		2,159,267
Shares granted		605,160
Shares vested		-721,886
Shares forfeited		-32,081
Unvested shares at December 31, 2014	2,159,267	2,010,460
Restricted Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted Average Grant-Date Fair Value, Unvested shares at January 1, 2014		$16.41
Weighted Average Grant-Date Fair Value, Granted	$17.60	$18.74	$14.75
Weighted Average Grant-Date Fair Value, Vested		$16.13
Weighted Average Grant-Date Fair Value, Forfeited		$17.44
Weighted Average Grant-Date Fair Value, Unvested shares at December 31, 2014	$16.41	$17.20

Recovered_Sheet4

Stock-based Compensation (Details 4) (Performance Shares [Member], USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Performance Shares, Nonvested, Number of Shares [Roll Forward]
Unvested shares at January 1, 2014		587,210
Shares granted		309,750
Shares vested		0
Shares forfeited		-25,634
Unvested shares at December 31, 2014	587,210	871,326
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted Average Grant-Date Fair Value, Unvested shares at January 1, 2014		$19.23
Weighted Average Grant-Date Fair Value, Granted	$17.78	$18.23	$20.74
Weighted Average Grant-Date Fair Value, Vested		$0
Weighted Average Grant-Date Fair Value, Forfeited		$19.04
Weighted Average Grant-Date Fair Value, Unvested shares at December 31, 2014	$19.23	$18.88
Minimum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		0
Target [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		871,326
Maximum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		1,742,652
February 1, 2012 to December 31, 2015 [Member] | Minimum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		0
February 1, 2012 to December 31, 2015 [Member] | Target [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		278,084
February 1, 2012 to December 31, 2015 [Member] | Maximum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		556,168
February 1, 2013 to December 31, 2016 [Member] | Minimum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		0
February 1, 2013 to December 31, 2016 [Member] | Target [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		291,561
February 1, 2013 to December 31, 2016 [Member] | Maximum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		583,122
February 1, 2014 to December 31, 2017 [Member] | Minimum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		0
February 1, 2014 to December 31, 2017 [Member] | Target [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		301,681
February 1, 2014 to December 31, 2017 [Member] | Maximum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Range of performance shares that can be earned		603,362
Executive [Member] | February 1, 2012 to December 31, 2015 [Member] | Minimum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares earned		0.00%
Executive [Member] | February 1, 2012 to December 31, 2015 [Member] | Maximum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares earned		200.00%
Executive [Member] | February 1, 2013 to December 31, 2016 [Member] | Minimum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares earned		0.00%
Executive [Member] | February 1, 2013 to December 31, 2016 [Member] | Maximum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares earned		200.00%
Executive [Member] | February 1, 2014 to December 31, 2017 [Member] | Minimum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares earned		0.00%
Executive [Member] | February 1, 2014 to December 31, 2017 [Member] | Maximum [Member]
Performance Shares, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Percentage of shares earned		200.00%

StockBased_Compensation_Detail4

Stock-Based Compensation (Details Textual) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares to be issued		21,750,000
Number of shares available for granting		6,217,581
Maximum annual award to individuals, aggregate grant-date fair value		$250,000
Vesting period of stock awards		1 year
Amount of grant date fair value expensed for awards granted to retirement-eligible grantees	973,000	1,358,000	726,000
Weighted average grant-date fair value of stock options		$18.73
Purchase of treasury stock, shares	179,907	215,632	129,568
Purchase of treasury stock	3,167,000	4,009,000	1,963,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual award to individuals, shares		500,000
Maximum term of stock options		10 years
Weighted average grant-date fair value of stock options	$10.97	$11.60	$9.24
Total intrinsic value of stock options exercised	145,000	439,000	954,000
Cash received from stock options exercised	1,153,000	789,000	8,368,000
Income tax benefit realized	0	0	0
Unrecognized compensation cost		2,874,000
Weighted average period of unrecognized compensation cost		28 months
Restricted Shares and Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual award to individuals, shares		500,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		16,573,000
Weighted average period of unrecognized compensation cost		29 months
Weighted average grant-date fair value	$17.60	$18.74	$14.75
Total fair value of shares that vested	7,770,000	11,647,000	9,156,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		$8,610,000
Weighted average period of unrecognized compensation cost		27 months
Weighted average grant-date fair value	$17.78	$18.23	$20.74
Minimum performance period		1 year
Minimum [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock awards		3 years
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock awards		3 years
Maximum [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock awards		4 years
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock awards		4 years

WriteOff_of_Abandoned_Developm1

Write-Off of Abandoned Development Projects and Demolition Costs Write-Off of Abandoned Development Projects and Demolition Costs (Details Textual) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Write-off of Abandoned Development Projects and Demolition Costs [Abstract]
Write-offs of abandoned development projects and demolition costs	$40,414,000	$14,029,000	$1,655,000	$26,850,000
Non-capitalizable demolition costs	$8,200,000		$1,372,000	$0

Impairment_of_Real_Estate_and_2

Impairment of Real Estate and Impairment of Unconsolidated Entities (Details) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	$421,361,000	$30,660,000	$277,095,000	$30,660,000
B2 BKLYN [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	0		146,300,000	0
Avenue at Tower City Center [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	0		72,473,000	0
Terminal Tower [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	0		42,208,000	0
Post Office Plaza [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	0		14,378,000	0
Building J at Illinois Science and Technology Park [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	17,474,000		0	0
Halle Building [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	0		0	30,200,000
Pacific Park Brooklyn [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	289,864,000		0	0
LiveWork Las Vegas [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	112,838,000		0	0
Other [Member]
Schedule of Impairment of Real Estate [Line Items]
Impairment of real estate	$1,185,000		$1,736,000	$460,000

Impairment_of_Real_Estate_and_3

Impairment of Real Estate and Impairment of Unconsolidated Entities (Details 1) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Schedule of Impairment of Real Estate Discontinued Operations [Line Items]
Impairment of real estate on discontinued operations	$76,713,000	$0	$4,254,000
Promenade Bolingbrook [Member]
Schedule of Impairment of Real Estate Discontinued Operations [Line Items]
Impairment of real estate on discontinued operations	54,194,000	0	0
Orchard Town Center [Member]
Schedule of Impairment of Real Estate Discontinued Operations [Line Items]
Impairment of real estate on discontinued operations	15,649,000	0	0
Kansas City, Missouri triple net lease retail property [Member]
Schedule of Impairment of Real Estate Discontinued Operations [Line Items]
Impairment of real estate on discontinued operations	6,870,000	0	0
Portgage, Michigan triple net lease retail property [Member]
Schedule of Impairment of Real Estate Discontinued Operations [Line Items]
Impairment of real estate on discontinued operations	0	0	2,263,000
White Oak Village [Member]
Schedule of Impairment of Real Estate Discontinued Operations [Line Items]
Impairment of real estate on discontinued operations	0	0	1,566,000
Other [Member]
Schedule of Impairment of Real Estate Discontinued Operations [Line Items]
Impairment of real estate on discontinued operations	$0	$0	$425,000

Impairment_of_Real_Estate_and_4

Impairment of Real Estate and Impairment of Unconsolidated Entities (Details 2) (Fair Value, Measurements, Nonrecurring [Member], USD $)	12 Months Ended			11 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2013	Dec. 31, 2014		Dec. 31, 2013
Discounted cash flows [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value	$10,500	84,738
Discount rate	10.00%
Indicative bids [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value	83,193	38,750		734,240
Comparable property market analysis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value				29,500
Minimum [Member] | Discounted cash flows [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Market capitalization rate		4.50%	[1]
Discount rate		6.00%	[1]
Minimum [Member] | Comparable property market analysis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Price per square foot				22
Maximum [Member] | Discounted cash flows [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Market capitalization rate		10.00%	[1]
Discount rate		12.00%	[1]
Maximum [Member] | Comparable property market analysis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Price per square foot				55
[1]	Weighted average market capitalization and discount rates are 6.7% and 8.6%, respectively.

Impairment_of_Real_Estate_and_5

Impairment of Real Estate and Impairment of Unconsolidated Entities (Detail Textuals) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013	Nov. 30, 2014
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Impairment of real estate	$421,361,000	$30,660,000	$277,095,000	$30,660,000
Impairment of real estate on discontinued operations	76,713,000		0	4,254,000
Impairment of unconsolidated entities	0		3,124,000	390,000
Fair Value, Measurements, Nonrecurring [Member] | Discounted cash flows [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Discount rate				10.00%
B2 BKLYN [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Company's ownership interest					50.00%
Ownership percentage of outside partner					50.00%
Impairment of real estate	0		146,300,000	0
Pacific Park Brooklyn [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Impairment of real estate	289,864,000		0	0
Area of project/parcel			22
Impairment of real estate, net of noncontrolling interest	242,417,000
LiveWork Las Vegas [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Impairment of real estate	112,838,000		0	0
Area of project/parcel			13.5
Building J at Illinois Science and Technology Park [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Impairment of real estate	17,474,000		0	0
Halle Building [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Impairment of real estate	0		0	30,200,000
Promenade Bolingbrook [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Impairment of real estate on discontinued operations	$54,194,000		$0	$0
Weighted average [Member] | Fair Value, Measurements, Nonrecurring [Member] | Discounted cash flows [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Market capitalization rate			6.70%
Discount rate			8.60%
Weighted average [Member] | Fair Value, Measurements, Nonrecurring [Member] | Comparable property market analysis [Member]
Impairment of Real Estate and Impairment of Unconsolidated Entities [Line Items]
Price per square foot	45

Net_Gain_Loss_on_Land_Held_for1

Net Gain (Loss) on Land Held for Divestiture Activity Net Gain (Loss) on Land Held for Divestiture Activity (Details) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Net Gain (Loss) on Land Held for Divestiture Activity [Abstract]
Sales of land held for divestiture	$1,941,000		$0	$74,150,000
Cost of sales of land held for divestiture	-323,000		0	-56,247,000
Gain on extinguishment of debt of land held for divestiture	0		0	4,373,000
Net gain on closed transactions of land held for divestiture	1,618,000		0	22,276,000
Bad debt expense	-9,000,000		0	0
Impairment of land held for divestiture	0		0	-15,796,000
Net gain (loss) on land held for divestiture activity	($7,382,000)	($4,457,000)	$0	$6,480,000

Net_Gain_Loss_on_Land_Held_for2

Net Gain (Loss) on Land Held for Divestiture Activity (Details 1) (Fair Value, Measurements, Nonrecurring [Member], USD $)	Jan. 31, 2013
In Thousands, unless otherwise specified
Indicative bids [Member]
Fair value of land held for divestiture [Line Items]
Fair value	$15,663
Discounted cash flows [Member]
Fair value of land held for divestiture [Line Items]
Fair value	$926

Net_Gain_Loss_on_Land_Held_for3

Net Gain (Loss) on Land Held for Divestiture Activity (Details 2) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Land Held for Divestiture disclosures [Abstract]
Net gain (loss) on sales of land held for divestiture of unconsolidated entities	$1,338,000	$0	($371,000)
Impairment of investments in unconsolidated entities	0	0	-40,406,000
Net gain (loss) on land held for divestiture activity of unconsolidated entities	$1,338,000	$0	($40,777,000)

Net_Gain_Loss_on_Land_Held_for4

Net Gain (Loss) on Land Held for Divestiture Activity (Details Textuals) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013	Jan. 31, 2012	Jul. 31, 2013
				project	acre
Land held for divestiture [Line Items]
Number of land developments projects				2
Impairment of land held for divestiture	$0	$0	$15,796,000
Bad debt expense	9,000,000	0	0
Maximum estimated holding period			12 months
Impairment of investments in unconsolidated entities	0	0	40,406,000
North Carolina land parcel [Member]
Land held for divestiture [Line Items]
Area of project/parcel					1,000
Estimated fair value of the underlying collateral					4,100,000
Bad debt expense	9,000,000
Bad debt expense, net of noncontrolling interest	8,300,000
Bad debt expense, after tax	4,980,000
Central Station [Member]
Land held for divestiture [Line Items]
Impairment of investments in unconsolidated entities			17,000,000
Sale price			29,525,000
Mesa del Sol [Member]
Land held for divestiture [Line Items]
Area of project/parcel			3,000
Impairment of investments in unconsolidated entities			$15,000,000

Net_Loss_on_Disposition_of_Par1

Net Loss on Disposition of Partial Interest in Development Project Net Loss on Disposition of Partial Interest in Development Project (Details Textuals) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013	Jun. 30, 2014
Significant Acquisitions and Disposals [Line Items]
Net loss on disposition of partial interest in development project	$0	$20,298,000	$0
Greenland Joint Venture [Member]
Significant Acquisitions and Disposals [Line Items]
Percentage of ownership sold				70.00%
Cash purchase price received, net of transaction costs		208,275,000
Net loss on disposition of partial interest in development project		20,298,000
Net loss on disposition of partial interest in development project, net of noncontrolling interests		$16,919,000

Net_Gain_on_Disposition_of_Ful2

Net Gain on Disposition of Full or Partial Interest in Rental Properties (Details) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Significant Acquisitions and Disposals [Line Items]
Net gain on disposition of full or partial interest in rental properties	$496,092,000	$0	$30,281,000	$0
Forest Trace [Member]
Significant Acquisitions and Disposals [Line Items]
Net gain on disposition of full or partial interest in rental properties	0		23,013,000	0
Halle Building [Member]
Significant Acquisitions and Disposals [Line Items]
Net gain on disposition of full or partial interest in rental properties	0		7,881,000	0
Stapleton-3055 Roslyn [Member]
Significant Acquisitions and Disposals [Line Items]
Net gain on disposition of full or partial interest in rental properties	0		-146,000	0
QIC Joint Venture [Member]
Significant Acquisitions and Disposals [Line Items]
Net gain on disposition of full or partial interest in rental properties	381,627,000		-467,000	0
New York Retail Joint Venture [Member]
Significant Acquisitions and Disposals [Line Items]
Net gain on disposition of full or partial interest in rental properties	$114,465,000		$0	$0	$9,561,000

Net_Gain_on_Disposition_of_Ful3

Net Gain on Disposition of Full or Partial Interest in Rental Properties (Details Textual) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013	Jan. 31, 2012	Sep. 30, 2013	Mar. 31, 2011
						properties	properties
Significant Acquisitions and Disposals [Line Items]
Net gain on disposition of partial interest in rental properties	$496,092,000	$0	$30,281,000	$0
Gain on disposition of partial interests in equity method investments	34,149,000		34,744,000	16,107,000
Acquisitions of noncontrolling interests	98,687,000		99,863,000	27,335,000
QIC Joint Venture [Member]
Significant Acquisitions and Disposals [Line Items]
Percentage of ownership sold	49.00%
Number of properties held by newly formed joint venture	8
Number of fully consolidated assets						7
Number of equity method investments	1
Debt assumed by the outside partner	477,100,000
Proceeds received, net of transaction costs	421,700,000
Cash proceeds	187,700,000
Net gain on disposition of partial interest in rental properties	381,627,000		-467,000	0
Gain on disposition of partial interests in equity method investments	27,080,000
Number of regional retail malls in which Company acquired noncontrolling interests	2
Acquisitions of noncontrolling interests	92,400,000
New York Retail Joint Venture [Member]
Significant Acquisitions and Disposals [Line Items]
Percentage of ownership sold							49.00%
Number of properties held by newly formed joint venture							15
Debt assumed by the outside partner							244,952,000
Net gain on disposition of partial interest in rental properties	114,465,000		0	0	9,561,000
Proceeds in the form of loan from the joint venture					178,286,000
Outside partner's minimum initial investment requirement					20.00%
Deferred gain				$114,465,000

Net_Gain_on_Change_in_Control_2

Net Gain on Change in Control of Interests Net Gain on Change in Control of Interests (Details) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Net Gain on Change in Control of Interests [Line Items]
Net gain on change in control of interests	$2,762,000	$8,351,000	$230,660,000	$8,351,000
Bayside Village [Member]
Net Gain on Change in Control of Interests [Line Items]
Net gain on change in control of interests	0		191,199,000	0
Boulevard Mall [Member]
Net Gain on Change in Control of Interests [Line Items]
Net gain on change in control of interests	0		36,702,000	0
Other [Member]
Net Gain on Change in Control of Interests [Line Items]
Net gain on change in control of interests	$2,762,000		$2,759,000	$8,351,000

Net_Gain_on_Change_in_Control_3

Net Gain on Change in Control of Interests Net Gain on Change in Control of Interests (Details 1) (USD $)	11 Months Ended			12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2014		Jan. 31, 2013
Net Gain on Change in Control of Interests [Abstract]
Revenues	$998,272		$963,325	$966,052		$1,048,067
Pro forma adjustment to revenues	39,819			40,721
Pro forma revenues	1,038,091			1,006,773
Earnings (loss) from continuing operations	-50,591		-2,320	-34,032		-21,195
Pro forma adjustment to earnings (loss) from continuing operations	9,963			13,638
Pro forma earnings (loss) from continuing operations	-40,628			-20,394
Net earnings (loss) attributable to common shareholders	-5,492		19,326	-7,595		4,296
Pro forma adjustment to net earnings (loss) attributable to common shareholders	1,427			775
Pro forma net earnings (loss) attributable to common shareholders	($4,065)			($6,820)
Weighted average shares outstanding - Diluted	198,696,729	[1]		198,480,783	[1]	172,621,723	[1]
Diluted net loss attributable to common shareholders	($0.03)			($0.04)
Pro forma diluted net loss attributable to common shareholders	($0.02)			($0.03)
[1]	Incremental shares from dilutive options, restricted stock and convertible securities aggregating 37,146,769 and 49,642,605 for the years ended DecemberB 31,B 2014 and January 31, 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive due to loss from continuing operations. Convertible securities of 30,200,589 for the 11B months ended DecemberB 31,B 2013 were not included in the computation of diluted EPS because their effect is anti-dilutive under the if-converted method. Weighted-average options, restricted stock and performance shares of 3,483,885, 3,601,719 and 4,105,670 for the year ended DecemberB 31,B 2014, the 11B months ended DecemberB 31,B 2013 and the year ended JanuaryB 31,B 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive under the treasury stock method.

Net_Gain_on_Change_in_Control_4

Net Gain on Change in Control of Interests Net Gain on Change in Control of Interests (Details Textuals) (USD $)	11 Months Ended		12 Months Ended		3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013	Dec. 31, 2014
Net Gain on Change in Control of Interests [Line Items]
Net gain on change in control of interests	$2,762,000	$8,351,000	$230,660,000	$8,351,000
Acquisitions of noncontrolling interests	98,687,000		99,863,000	27,335,000
Bayside Village [Member]
Net Gain on Change in Control of Interests [Line Items]
Ownership percentage prior to sale			50.00%		50.00%
Net gain on change in control of interests	0		191,199,000	0
Increase in real estate, net due to consolidation of property			436,700,000		436,700,000
Increase in investments in and advances to unconsolidated entities due to consolidation of property			44,300,000		44,300,000
Increase in other assets due to consolidation of property			5,300,000		5,300,000
Increase in mortgage debt and notes payable, nonrecourse due to consolidation of property			126,900,000		126,900,000
Increase in noncontrolling interest due to consolidation of property			168,252,000		168,252,000
Boulevard Mall [Member]
Net Gain on Change in Control of Interests [Line Items]
Ownership percentage prior to sale			50.00%		50.00%
Net gain on change in control of interests	0		36,702,000	0
Increase in real estate, net due to consolidation of property			106,300,000		106,300,000
Increase in investments in and advances to unconsolidated entities due to consolidation of property			26,200,000		26,200,000
Increase in other assets due to consolidation of property			17,000,000		17,000,000
Increase in mortgage debt and notes payable, nonrecourse due to consolidation of property			100,800,000		100,800,000
Partner's equity ownership interest acquired			50.00%		50.00%
Acquisitions of noncontrolling interests					$9,000,000
Company's ownership interest			100.00%		100.00%

Gain_Loss_on_Extinguishment_of1

Gain (Loss) on Extinguishment of Debt (Details Textuals) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Extinguishment of Debt [Line Items]
Gain (loss) on extinguishment of debt	$4,549,000	$6,807,000	($1,179,000)	$7,096,000
Carrying value of nonrecourse mortgage	4,351,506,000		4,238,201,000
Ten MetroTech Center [Member]
Extinguishment of Debt [Line Items]
Gain (loss) on extinguishment of debt	24,669,000
Carrying value of nonrecourse mortgage	40,000,000			73,500,000
Restricted cash applied to outstanding principal balance				12,300,000
Outstanding principal balance, forbearance agreement				40,000,000
Forbearance period				2 years
Interest Rate, forbearance agreement				9.00%
Participation payment percentage, forbearance agreement				50.00%
2034 and 2017 Senior Notes [Member]
Extinguishment of Debt [Line Items]
Gain (loss) on extinguishment of debt	-13,077,000
2014 Senior Notes [Member]
Extinguishment of Debt [Line Items]
Gain (loss) on extinguishment of debt	-4,762,000
Terminal Tower [Member]
Extinguishment of Debt [Line Items]
Gain (loss) on extinguishment of debt	$9,425,000

Income_Taxes_Details

Income Taxes (Details) (USD $)	11 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Current
Federal	($1,725)		($1,616)	($54,157)
State	2,287		6,547	-6,287
Current income tax expense (benefit)	562		4,931	-60,444
Deferred
Federal	13,172		-29,711	48,258
State	-1,468		7,584	-1,735
Deferred income tax expense (benefit)	11,704		-22,127	46,523
Total income tax expense (benefit)	$12,266	($12,430)	($17,196)	($13,921)

Income_Taxes_Details_1

Income Taxes (Details 1) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Effective tax rate for income taxes from continuing operations
Earnings (loss) before income taxes	($147,488,000)	($56,687,000)	($138,136,000)	($79,747,000)
Equity in earnings of unconsolidated entities, net of impairment	109,163,000	41,937,000	86,908,000	44,631,000
Less: Noncontrolling interests	71,525,000		13,475,000	1,251,000
Earnings (loss) from continuing operations, including noncontrolling interest, before income taxes	33,200,000		-37,753,000	-33,865,000
Income taxes computed at the statutory rate	11,620,000		-13,214,000	-11,853,000
Increase (decrease) in tax resulting from:
State taxes, net of federal benefit	-887,000		7,860,000	-5,233,000
State net operating loss, net of federal benefit	2,845,000		-3,899,000	1,667,000
General business credits	-1,638,000		-15,099,000	-947,000
Valuation allowance	-5,205,000		5,658,000	-2,048,000
Charitable contributions	3,356,000		2,135,000	2,628,000
Permanent adjustments	-18,000		-859,000	3,037,000
Conversion/Exchange of senior debt	1,667,000		0	0
Other items	526,000		222,000	-1,172,000
Total income tax expense (benefit)	12,266,000	-12,430,000	-17,196,000	-13,921,000
Effective tax rate	36.95%		45.55%	41.11%
The components of the deferred income tax expense (benefit) for continuing operations are as follows:
Excess of tax over financial statement depreciation and amortization	-8,385,000		8,343,000	19,415,000
Costs on land and rental properties under development expensed for tax purposes	4,818,000		2,919,000	11,048,000
Revenues and expenses recognized in different periods for tax and financial statement purposes	132,380,000		122,380,000	50,278,000
Difference between tax and financial statements related to unconsolidated entities	-5,246,000		2,673,000	207,000
Impairment of real estate and land held for divestiture	-128,357,000		-96,892,000	-16,178,000
Deferred state taxes, net of federal benefit	1,277,000		1,045,000	882,000
Utilization of (addition to) tax loss carryforward excluding effect of stock options	21,916,000		-54,272,000	-16,230,000
Valuation allowance	-5,205,000		5,658,000	-2,048,000
General business credits	-520,000		-15,099,000	-947,000
Alternative Minimum Tax credits	-974,000		1,118,000	96,000
Deferred income tax expense (benefit)	$11,704,000		($22,127,000)	$46,523,000

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	Dec. 31, 2014		Dec. 31, 2013
Components of Deferred Income Tax Liability [Line Items]
Depreciation	$209,419,000		$164,671,000
Capitalized costs	296,721,000		153,508,000
Tax loss carryforward	-88,970,000		-34,698,000
State loss carryforward, net of federal benefit	-25,061,000		-21,170,000
Valuation allowance	53,735,000	[1]	48,077,000	[1]
Federal tax credits and other carryforwards	-69,619,000		-56,274,000
Other comprehensive loss	-37,281,000		-48,517,000
Basis in unconsolidated entities	163,162,000		142,680,000
Other	-19,632,000		137,617,000
Total	482,474,000		485,894,000
Temporary Differences [Member]
Components of Deferred Income Tax Liability [Line Items]
Depreciation	539,977,000		424,595,000
Capitalized costs	765,081,000		395,733,000
Tax loss carryforward	-254,201,000		-99,138,000
State loss carryforward, net of federal benefit	0		0
Valuation allowance	0		0
Federal tax credits and other carryforwards	0		0
Other comprehensive loss	-96,127,000		-125,099,000
Basis in unconsolidated entities	420,705,000		367,892,000
Other	-34,142,000		370,743,000
Total	$1,341,293,000		$1,334,726,000
[1]	The valuation allowance is related to state net operating losses and bonus depreciation, general business credits and charitable contributions.

Income_Taxes_Details_3

Income Taxes (Details 3) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Net Deferred Tax Liability
Deferred tax liabilities	$1,668,655		$1,423,173
Deferred tax assets	1,239,916		985,356
Less: valuation allowance	-53,735	[1]	-48,077	[1]
Net deferred tax assets	1,186,181		937,279
Net deferred tax liability	$482,474		$485,894
[1]	The valuation allowance is related to state net operating losses and bonus depreciation, general business credits and charitable contributions.

Income_Taxes_Details_4

Income Taxes (Details 4) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014
Unrecognized tax benefits
Beginning balance, January 1, 2014 and February 1, 2013	$584,000	$968,000
Gross increases for tax positions of prior years	527,000	0
Settlements	0	-164,000
Lapse of statutes of limitation	-143,000	0
Unrecognized tax benefits balance at December 31, 2014 and 2013	$968,000	$804,000

Income_Taxes_Details_Textual

Income Taxes (Details Textual) (USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Tax Credit Carryforward [Line Items]
Federal statutory rate		35.00%
Income taxes paid	$5,541	$6,469
Income taxes refunded			-296
Federal net operating loss carryforward		307,200
Period after REIT conversion that assets sold are subject to income taxes		10 years
Net deferred tax asset unrecorded		18,475
Unrecognized tax benefits	968	804	584
Accrued interest and penalties related to uncertain income tax positions	299	240
Income tax expense (benefit) relating to interest and penalties on uncertain tax positions	135	-59	10
Unrecognized tax benefits that would impact effective tax rate	629	523
Charitable contribution deduction carryforward [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward		16,234
General business tax credit carryforward [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward		36,779
Alternative minimum tax credit carryforward [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward		$27,452

Discontinued_Operations_and_Ga2

Discontinued Operations and Gain (Loss) on Disposition of Rental Properties (Details 1)	Dec. 31, 2014
	apartmentunit
Millender Center [Member]
Summary of rental properties included in discontinued operations
Number of Units	339
Emerald Palms [Member]
Summary of rental properties included in discontinued operations
Number of Units	505
Southfield [Member]
Summary of rental properties included in discontinued operations
Number of Units	212
Promenade Bolingbrook [Member]
Summary of rental properties included in discontinued operations
Square Feet	771,000
Quartermaster Plaza [Member]
Summary of rental properties included in discontinued operations
Square Feet	456,000
Mesa del Sol - 5600 University SE [Member]
Summary of rental properties included in discontinued operations
Square Feet	87,000
Orchard Town Center [Member]
Summary of rental properties included in discontinued operations
Square Feet	603,000
Colorado Studios [Member]
Summary of rental properties included in discontinued operations
Square Feet	75,000
Higbee Building [Member]
Summary of rental properties included in discontinued operations
Square Feet	815,000
Sheraton Station Square [Member]
Summary of rental properties included in discontinued operations
Number of Units	399
Fairmont Plaza [Member]
Summary of rental properties included in discontinued operations
Square Feet	335,000
White Oak Village [Member]
Summary of rental properties included in discontinued operations
Square Feet	843,000
Quebec Square [Member]
Summary of rental properties included in discontinued operations
Square Feet	739,000
Seven triple net lease properties [Member]
Summary of rental properties included in discontinued operations
Square Feet	422,000

Discontinued_Operations_and_Ga3

Discontinued Operations and Gain (Loss) on Disposition of Rental Properties (Details 2) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Summary of operating results of discontinued operations
Revenues from real estate operations	$64,093,000		$7,034,000	$113,076,000
Expenses
Operating expenses	35,381,000		3,026,000	55,926,000
Depreciation and amortization	12,909,000		987,000	23,566,000
Impairment of real estate	76,713,000		0	4,254,000
Total expenses	125,003,000		4,013,000	83,746,000
Interest income	274,000		0	390,000
Gain on disposition of rental properties	41,831,000		28,100,000	100,900,000
Net loss on change in control of interest	0		0	-1,585,000
Interest expense	-12,015,000		-5,538,000	-23,167,000
Amortization of mortgage procurement costs	-476,000		-41,000	-1,389,000
Loss on extinguishment of debt	-40,000		-448,000	-464,000
Earnings (loss) before income taxes	-31,336,000		25,094,000	104,015,000
Income tax expense (benefit)	-11,137,000		12,082,000	46,549,000
Earnings (loss) from discontinued operations	-20,199,000	59,410,000	13,012,000	57,466,000
Noncontrolling interests
Gain on disposition of rental properties	5,960,000		58,000	965,000
Operating earnings (loss) from rental properties	82,000		-8,000	132,000
Earnings from discontinued operations attributable to noncontrolling interests	6,042,000		50,000	1,097,000
Earnings (loss) from discontinued operations attributable to Forest City Enterprises, Inc	($26,241,000)		$12,962,000	$56,369,000

Discontinued_Operations_and_Ga4

Discontinued Operations and Gain (Loss) on Disposition of Rental Properties (Details 3) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	$41,831,000	$28,100,000	$100,900,000
Quartermaster Plaza [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	0	26,373,000	0
Quebec Square [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	0	0	8,879,000
Promenade Bolingbrook [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	0	1,276,000	0
Orchard Town Center [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	-2,157,000	0	0
Mesa del Sol - 5600 University SE [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	0	451,000	0
Higbee Building [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	2,922,000	0	0
Colorado Studios [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	1,239,000	0	0
Fairmont Plaza [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	0	0	26,877,000
Millender Center [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	21,660,000	0	0
Emerald Palms [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	0	0	45,845,000
Southfield [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	0	0	13,445,000
Sheraton Station Square [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	18,096,000	0	0
Triple net lease properties [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	-132,000	0	6,568,000
Other [Member]
Gain Loss on Disposition of Rental Properties
Gain (loss) on disposition of rental properties	$203,000	$0	($714,000)

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	11 Months Ended			12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2014		Jan. 31, 2013
Numerators
Earnings (loss) from continuing operations attributable to Forest City Enterprises, Inc.	$20,934,000			($20,557,000)		($19,944,000)
Preferred dividends and inducements of preferred stock conversions	-185,000		-32,129,000	0		-32,129,000
Undistributed earnings allocated to participating securities	-605,000			0		0
Earnings (loss) from continuing operations attributable to common shareholders - Basic	20,144,000			-20,557,000		-52,073,000
Undistributed earnings allocated to participating securities	-605,000			0		0
Earnings (loss) from continuing operations attributable to common shareholders - Diluted	20,749,000			-20,557,000		-52,073,000
Net earnings (loss) attributable to Forest City Enterprises, Inc.	-5,307,000		51,455,000	-7,595,000		36,425,000
Preferred dividends and inducements of preferred stock conversions	-185,000		-32,129,000	0		-32,129,000
Undistributed earnings allocated to participating securities	0			0		-1,836,000
Net earnings (loss) attributable to Forest City Enterprises, Inc. common shareholders - Basic and Diluted	($5,492,000)			($7,595,000)		$2,460,000
Denominators
Weighted average shares outstanding - Basic	193,465,572			198,480,783		172,621,723
Effect of stock options, restricted stock and performance shares	1,584,402			0		0
Effect of convertible debt	0			0		0
Effect of convertible Class A Common Units	3,646,755			0		0
Weighted average shares outstanding - Diluted	198,696,729	[1]		198,480,783	[1]	172,621,723	[1]
Earnings per share
Earnings (loss) from continuing operations attributable to common shareholders - Basic and Diluted	$0.10			($0.10)		($0.30)
Net earnings (loss) attributable to common shareholders - Basic and Diluted	($0.03)			($0.04)		$0.01
[1]	Incremental shares from dilutive options, restricted stock and convertible securities aggregating 37,146,769 and 49,642,605 for the years ended DecemberB 31,B 2014 and January 31, 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive due to loss from continuing operations. Convertible securities of 30,200,589 for the 11B months ended DecemberB 31,B 2013 were not included in the computation of diluted EPS because their effect is anti-dilutive under the if-converted method. Weighted-average options, restricted stock and performance shares of 3,483,885, 3,601,719 and 4,105,670 for the year ended DecemberB 31,B 2014, the 11B months ended DecemberB 31,B 2013 and the year ended JanuaryB 31,B 2013, respectively, were not included in the computation of diluted EPS because their effect is anti-dilutive under the treasury stock method.

Earnings_Per_Share_Details_Tex

Earnings Per Share (Details Textual)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Dilutive options, restricted stock and convertible securities [Member]
Earnings Per Share (Textual) [Abstract]
Shares excluded from computation of earnings per share because effect is anti-dilutive under treasury stock method		37,146,769	49,642,605
Convertible securities [Member]
Earnings Per Share (Textual) [Abstract]
Shares excluded from computation of earnings per share because effect is anti-dilutive under treasury stock method	30,200,589
Weighted-average options, restricted stock and performance shares [Member]
Earnings Per Share (Textual) [Abstract]
Shares excluded from computation of earnings per share because effect is anti-dilutive under treasury stock method	3,601,719	3,483,885	4,105,670

Segment_Information_Details

Segment Information (Details) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Financial data of reportable operating segments
Identifiable assets	$8,952,025,000		$8,814,940,000
Revenues	998,272,000	963,325,000	966,052,000	1,048,067,000
Operating expenses	665,818,000	600,134,000	634,293,000	661,232,000
Depreciation and amortization	273,054,000	189,168,000	230,466,000	212,254,000
Interest and other income	52,283,000	42,245,000	42,780,000	45,545,000
Interest expense	285,042,000	228,980,000	234,405,000	253,324,000
Capital expenditures	461,628,000		419,869,000	803,865,000
Commercial Group [Member]
Financial data of reportable operating segments
Identifiable assets	5,120,360,000		4,210,714,000
Revenues	593,714,000		517,487,000	680,533,000
Operating expenses	334,996,000		300,123,000	327,263,000
Depreciation and amortization	181,697,000		124,821,000	148,983,000
Interest and other income	18,078,000		7,929,000	14,366,000
Interest expense	168,056,000		129,515,000	169,590,000
Capital expenditures	171,002,000		119,343,000	327,867,000
Residential Group [Member]
Financial data of reportable operating segments
Identifiable assets	2,468,708,000		3,172,188,000
Revenues	249,677,000		256,009,000	264,547,000
Operating expenses	179,405,000		174,472,000	184,289,000
Depreciation and amortization	55,031,000		68,089,000	51,885,000
Interest and other income	21,742,000		21,081,000	21,149,000
Interest expense	32,409,000		28,108,000	18,680,000
Capital expenditures	245,647,000		289,502,000	149,160,000
Arena [Member]
Financial data of reportable operating segments
Identifiable assets	984,937,000		955,570,000
Revenues	104,532,000		116,695,000	48,353,000
Operating expenses	72,659,000		76,096,000	49,175,000
Depreciation and amortization	33,231,000		34,299,000	8,888,000
Interest and other income	0		0	0
Interest expense	34,220,000		40,229,000	-122,000
Capital expenditures	43,928,000		10,972,000	325,744,000
Land Development Group [Member]
Financial data of reportable operating segments
Identifiable assets	260,070,000		250,833,000
Revenues	50,349,000		75,861,000	54,634,000
Operating expenses	33,737,000		32,486,000	48,055,000
Depreciation and amortization	364,000		359,000	840,000
Interest and other income	12,218,000		13,597,000	9,866,000
Interest expense	-320,000		-1,090,000	3,801,000
Capital expenditures	819,000		37,000	190,000
Corporate Activities [Member]
Financial data of reportable operating segments
Identifiable assets	117,950,000		225,635,000
Revenues	0		0	0
Operating expenses	45,021,000		51,116,000	52,450,000
Depreciation and amortization	2,731,000		2,898,000	1,658,000
Interest and other income	245,000		173,000	164,000
Interest expense	50,677,000		37,643,000	61,375,000
Capital expenditures	$232,000		$15,000	$904,000

Segment_Information_Details_1

Segment Information (Details 1) (USD $)	11 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 31, 2013
Reconciliation of Net Earnings (Loss) to FFO by Segment
Net earnings (loss) attributable to common shareholders	($5,492,000)	$19,326,000	($7,595,000)	$4,296,000
Preferred dividends and inducements of preferred stock conversions	185,000	32,129,000	0	32,129,000
Net earnings (loss) attributable to Forest City Enterprises, Inc.	-5,307,000	51,455,000	-7,595,000	36,425,000
Depreciation and amortization b Real Estate Groups	273,054,000	189,168,000	230,466,000	212,254,000
Net gain on disposition of full or partial interest in rental properties, net of noncontrolling interest	-496,092,000		-30,254,000
Gain on disposition of unconsolidated entities	-68,430,000		-52,421,000	-51,066,000
Impairment of consolidated depreciable real estate	18,659,000		275,098,000	30,660,000
Impairment of unconsolidated depreciable real estate	0		3,124,000	390,000
Discontinued operations:
Gain on disposition of rental properties	-35,871,000		-28,042,000	-99,935,000
Impairment of consolidated depreciable real estate	76,713,000			4,254,000
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	233,980,000		44,988,000	58,935,000
Impairment of depreciable real estate	-36,988,000		-106,691,000	-13,692,000
FFO	22,261,000		394,589,000	267,408,000
Real Estate Groups [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Depreciation and amortization b Real Estate Groups	322,666,000		295,396,000	277,966,000
Discontinued operations:
Depreciation and amortization b Real Estate Groups	12,931,000		986,000	23,471,000
Commercial Group [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Net earnings (loss) attributable to common shareholders	84,294,000			82,022,000
Preferred dividends and inducements of preferred stock conversions	0			0
Net earnings (loss) attributable to Forest City Enterprises, Inc.	84,294,000		-67,682,000	82,022,000
Depreciation and amortization b Real Estate Groups	181,697,000		124,821,000	148,983,000
Net gain on disposition of full or partial interest in rental properties, net of noncontrolling interest	-496,092,000		-7,241,000
Gain on disposition of unconsolidated entities	-68,430,000		-25,279,000	-16,107,000
Impairment of consolidated depreciable real estate	17,474,000		129,059,000	30,660,000
Impairment of unconsolidated depreciable real estate			3,124,000	0
Discontinued operations:
Gain on disposition of rental properties	-19,843,000		-28,042,000	-40,645,000
Impairment of consolidated depreciable real estate	76,713,000			4,254,000
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	0		0	0
Impairment of depreciable real estate	0		0	0
FFO	-172,983,000		183,094,000	266,656,000
Commercial Group [Member] | Real Estate Groups [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Depreciation and amortization b Real Estate Groups	220,135,000		178,169,000	186,115,000
Discontinued operations:
Depreciation and amortization b Real Estate Groups	12,766,000		986,000	20,357,000
Residential Group [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Net earnings (loss) attributable to common shareholders	31,220,000			132,141,000
Preferred dividends and inducements of preferred stock conversions	0			0
Net earnings (loss) attributable to Forest City Enterprises, Inc.	31,220,000		115,833,000	132,141,000
Depreciation and amortization b Real Estate Groups	55,031,000		68,089,000	51,885,000
Net gain on disposition of full or partial interest in rental properties, net of noncontrolling interest	0		-23,013,000
Gain on disposition of unconsolidated entities	0		-27,142,000	-34,959,000
Impairment of consolidated depreciable real estate	1,185,000		146,039,000	0
Impairment of unconsolidated depreciable real estate			0	0
Discontinued operations:
Gain on disposition of rental properties	-16,028,000		0	-59,290,000
Impairment of consolidated depreciable real estate	0			0
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	0		0	0
Impairment of depreciable real estate	0		0	0
FFO	99,696,000		308,890,000	126,983,000
Residential Group [Member] | Real Estate Groups [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Depreciation and amortization b Real Estate Groups	83,154,000		97,173,000	85,977,000
Discontinued operations:
Depreciation and amortization b Real Estate Groups	165,000		0	3,114,000
Arena [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Net earnings (loss) attributable to common shareholders	-19,514,000			-497,000
Preferred dividends and inducements of preferred stock conversions	0			0
Net earnings (loss) attributable to Forest City Enterprises, Inc.	-19,514,000		-17,555,000	-497,000
Depreciation and amortization b Real Estate Groups	33,231,000		34,299,000	8,888,000
Net gain on disposition of full or partial interest in rental properties, net of noncontrolling interest	0		0
Gain on disposition of unconsolidated entities	0		0	0
Impairment of consolidated depreciable real estate	0		0	0
Impairment of unconsolidated depreciable real estate			0	0
Discontinued operations:
Gain on disposition of rental properties	0		0	0
Impairment of consolidated depreciable real estate	0			0
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	0		0	0
Impairment of depreciable real estate	0		0	0
FFO	-395,000		2,340,000	4,716,000
Arena [Member] | Real Estate Groups [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Depreciation and amortization b Real Estate Groups	19,119,000		19,895,000	5,213,000
Discontinued operations:
Depreciation and amortization b Real Estate Groups	0		0	0
Land Development Group [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Net earnings (loss) attributable to common shareholders	18,915,000			-23,833,000
Preferred dividends and inducements of preferred stock conversions	0			0
Net earnings (loss) attributable to Forest City Enterprises, Inc.	18,915,000		51,360,000	-23,833,000
Depreciation and amortization b Real Estate Groups	364,000		359,000	840,000
Net gain on disposition of full or partial interest in rental properties, net of noncontrolling interest	0		0
Gain on disposition of unconsolidated entities	0		0	0
Impairment of consolidated depreciable real estate	0		0	0
Impairment of unconsolidated depreciable real estate			0	390,000
Discontinued operations:
Gain on disposition of rental properties	0		0	0
Impairment of consolidated depreciable real estate	0			0
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	0		0	0
Impairment of depreciable real estate	0		0	0
FFO	19,173,000		51,519,000	-22,782,000
Land Development Group [Member] | Real Estate Groups [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Depreciation and amortization b Real Estate Groups	258,000		159,000	661,000
Discontinued operations:
Depreciation and amortization b Real Estate Groups	0		0	0
Corporate Activities [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Net earnings (loss) attributable to common shareholders	-120,407,000			-185,537,000
Preferred dividends and inducements of preferred stock conversions	185,000			32,129,000
Net earnings (loss) attributable to Forest City Enterprises, Inc.	-120,222,000		-89,551,000	-153,408,000
Depreciation and amortization b Real Estate Groups	2,731,000		2,898,000	1,658,000
Net gain on disposition of full or partial interest in rental properties, net of noncontrolling interest	0		0
Gain on disposition of unconsolidated entities	0		0	0
Impairment of consolidated depreciable real estate	0		0	0
Impairment of unconsolidated depreciable real estate			0	0
Discontinued operations:
Gain on disposition of rental properties	0		0	0
Impairment of consolidated depreciable real estate	0			0
Income tax expense (benefit) on non-FFO:
Gain on disposition of rental properties	233,980,000		44,988,000	58,935,000
Impairment of depreciable real estate	-36,988,000		-106,691,000	-13,692,000
FFO	76,770,000		-151,254,000	-108,165,000
Corporate Activities [Member] | Real Estate Groups [Member]
Reconciliation of Net Earnings (Loss) to FFO by Segment
Depreciation and amortization b Real Estate Groups	0		0	0
Discontinued operations:
Depreciation and amortization b Real Estate Groups	$0		$0	$0

Valuation_and_Qualifying_Accou1

Valuation and Qualifying Accounts (Details) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Allowance for doubtful accounts and notes receivable [Member]
Valuation and Qualifying Accounts
Balance at Beginning of Period	$25,858,000	$15,141,000	$25,875,000
Additions Charged to Costs and Expenses	13,467,000	3,128,000	6,016,000
Deductions	24,184,000	7,498,000	6,033,000
Balance at End of Period	15,141,000	10,771,000	25,858,000
Valuation reserve on other investments [Member]
Valuation and Qualifying Accounts
Balance at Beginning of Period	5,277,000	5,312,000	5,168,000
Additions Charged to Costs and Expenses	35,000	43,000	109,000
Deductions	0	35,000	0
Balance at End of Period	5,312,000	5,320,000	5,277,000
Valuation allowances for deferred tax assets [Member]
Valuation and Qualifying Accounts
Balance at Beginning of Period	53,282,000	48,077,000	55,330,000
Additions Charged to Costs and Expenses	1,047,000	11,893,000	4,025,000
Deductions	6,252,000	6,235,000	6,073,000
Balance at End of Period	$48,077,000	$53,735,000	$53,282,000

Real_Estate_and_Accumulated_De1

Real Estate and Accumulated Depreciation (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 31, 2013	Jan. 31, 2012
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	$4,238,201,000
Initial Cost to Company, Land and Improvements	907,024,000
Initial Cost to Company, Buildings and Improvements	6,342,221,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,079,742,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,052,351,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	7,276,636,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	8,328,987,000	8,475,571,000	10,026,010,000	9,646,870,000
Accumulated Depreciation at December 31, 2014	1,555,965,000	1,469,328,000	1,654,632,000	1,526,503,000
Office [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	1,642,913,000
Initial Cost to Company, Land and Improvements	143,340,000
Initial Cost to Company, Buildings and Improvements	1,859,986,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	581,528,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	225,702,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	2,359,152,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	2,584,854,000
Accumulated Depreciation at December 31, 2014	736,449,000
Office [Member] | Atlantic Terminal Office (2 Hanson Place) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	101,831,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	108,940,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,739,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	112,679,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	112,679,000
Accumulated Depreciation at December 31, 2014	23,569,000
Date of Construction/Acquisition	31-Dec-04
Office [Member] | Ballston Common Office Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	42,750,000
Initial Cost to Company, Land and Improvements	7,301,000
Initial Cost to Company, Buildings and Improvements	45,964,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	6,599,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	7,301,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	52,563,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	59,864,000
Accumulated Depreciation at December 31, 2014	11,374,000
Date of Construction/Acquisition	31-Dec-05
Office [Member] | Commerce Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	24,050,000
Initial Cost to Company, Land and Improvements	3,432,000
Initial Cost to Company, Buildings and Improvements	20,873,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,820,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,432,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	24,693,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	28,125,000
Accumulated Depreciation at December 31, 2014	8,267,000
Date of Construction/Acquisition	31-Dec-07
Office [Member] | Edgeworth Building [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	19,411,000
Initial Cost to Company, Land and Improvements	942,000
Initial Cost to Company, Buildings and Improvements	29,353,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	2,530,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	951,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	31,874,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	32,825,000
Accumulated Depreciation at December 31, 2014	5,060,000
Date of Construction/Acquisition	31-Dec-06
Office [Member] | Glen Forest Office Park (Richmond) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	59,189,000
Initial Cost to Company, Land and Improvements	11,766,000
Initial Cost to Company, Buildings and Improvements	88,632,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	8,972,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	11,818,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	97,552,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	109,370,000
Accumulated Depreciation at December 31, 2014	20,352,000
Date of Construction/Acquisition	31-Dec-07
Office [Member] | Harlem Office [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	31,672,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	8,422,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	40,094,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	40,094,000
Accumulated Depreciation at December 31, 2014	8,231,000
Date of Construction/Acquisition	31-Dec-03
Office [Member] | 4901 Searle [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	20,689,000
Initial Cost to Company, Land and Improvements	837,000
Initial Cost to Company, Buildings and Improvements	16,227,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,525,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	837,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	20,752,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	21,589,000
Accumulated Depreciation at December 31, 2014	3,665,000
Date of Construction/Acquisition	31-Dec-06
Office [Member] | 4930 Oakton [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	670,000
Initial Cost to Company, Buildings and Improvements	1,842,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	2,554,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,081,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	3,985,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	5,066,000
Accumulated Depreciation at December 31, 2014	733,000
Date of Construction/Acquisition	31-Dec-06
Office [Member] | 8025 Lamon [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	14,737,000
Initial Cost to Company, Land and Improvements	978,000
Initial Cost to Company, Buildings and Improvements	6,426,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	20,680,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	978,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	27,106,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	28,084,000
Accumulated Depreciation at December 31, 2014	3,571,000
Date of Construction/Acquisition	31-Dec-06
Office [Member] | 8045 Lamon [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	18,261,000
Initial Cost to Company, Land and Improvements	3,301,000
Initial Cost to Company, Buildings and Improvements	21,198,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	31,896,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,301,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	53,094,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	56,395,000
Accumulated Depreciation at December 31, 2014	7,454,000
Date of Construction/Acquisition	31-Dec-07
Office [Member] | Johns Hopkins - 855 North Wolfe Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	69,033,000
Initial Cost to Company, Land and Improvements	7,314,000
Initial Cost to Company, Buildings and Improvements	76,318,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	13,867,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	7,314,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	90,185,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	97,499,000
Accumulated Depreciation at December 31, 2014	12,058,000
Date of Construction/Acquisition	31-Dec-08
Office [Member] | Johns Hopkins Parking Garage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	1,600,000
Initial Cost to Company, Buildings and Improvements	26,185,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	2,774,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,600,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	28,959,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	30,559,000
Accumulated Depreciation at December 31, 2014	1,189,000
Date of Construction/Acquisition	31-Dec-12
Office [Member] | Aperture Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	834,000
Initial Cost to Company, Buildings and Improvements	3,010,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	239,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	834,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	3,249,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	4,083,000
Accumulated Depreciation at December 31, 2014	1,231,000
Date of Construction/Acquisition	31-Dec-08
Office [Member] | Fidelity [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	22,331,000
Initial Cost to Company, Land and Improvements	5,003,000
Initial Cost to Company, Buildings and Improvements	29,872,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	293,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	5,003,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	30,165,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	35,168,000
Accumulated Depreciation at December 31, 2014	3,420,000
Date of Construction/Acquisition	31-Dec-08
Office [Member] | One MetroTech Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	160,406,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	212,153,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	64,302,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	23,543,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	252,912,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	276,455,000
Accumulated Depreciation at December 31, 2014	112,690,000
Date of Construction/Acquisition	31-Dec-91
Office [Member] | Two MetroTech Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	73,323,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	155,280,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	34,025,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	7,137,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	182,168,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	189,305,000
Accumulated Depreciation at December 31, 2014	75,700,000
Date of Construction/Acquisition	31-Dec-90
Office [Member] | Nine MetroTech Center North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	59,700,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	64,303,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,250,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	380,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	68,173,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	68,553,000
Accumulated Depreciation at December 31, 2014	25,030,000
Date of Construction/Acquisition	31-Dec-97
Office [Member] | Eleven MetroTech Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	61,000,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	41,290,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	17,047,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	6,270,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	52,067,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	58,337,000
Accumulated Depreciation at December 31, 2014	23,989,000
Date of Construction/Acquisition	31-Dec-95
Office [Member] | Twelve MetroTech Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	42,344,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	16,140,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,847,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	56,637,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	58,484,000
Accumulated Depreciation at December 31, 2014	11,414,000
Date of Construction/Acquisition	31-Dec-04
Office [Member] | Fifteen MetroTech Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	165,736,000
Initial Cost to Company, Land and Improvements	3,762,000
Initial Cost to Company, Buildings and Improvements	163,414,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	8,482,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	175,658,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	175,658,000
Accumulated Depreciation at December 31, 2014	39,101,000
Date of Construction/Acquisition	31-Dec-03
Office [Member] | New York Times [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	640,000,000
Initial Cost to Company, Land and Improvements	91,737,000
Initial Cost to Company, Buildings and Improvements	375,931,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	137,865,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	141,479,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	464,054,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	605,533,000
Accumulated Depreciation at December 31, 2014	67,273,000
Date of Construction/Acquisition	31-Dec-07
Office [Member] | One Pierrepont Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	3,907,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	86,863,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	99,787,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	558,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	186,092,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	186,650,000
Accumulated Depreciation at December 31, 2014	105,788,000
Date of Construction/Acquisition	31-Dec-88
Office [Member] | Post Office Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	14,488,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	57,213,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	14,751,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	71,964,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	71,964,000
Accumulated Depreciation at December 31, 2014	41,255,000
Date of Construction/Acquisition	31-Dec-90
Office [Member] | Skylight Office Tower [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	26,841,000
Initial Cost to Company, Land and Improvements	2,500,000
Initial Cost to Company, Buildings and Improvements	32,695,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	35,936,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	71,131,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	71,131,000
Accumulated Depreciation at December 31, 2014	39,617,000
Date of Construction/Acquisition	31-Dec-91
Office [Member] | Terminal Tower [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	29,422,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	45,982,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	75,404,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	75,404,000
Accumulated Depreciation at December 31, 2014	59,403,000
Date of Construction/Acquisition	31-Dec-83
Office [Member] | University of Pennsylvania [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	45,230,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	41,146,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	10,707,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	51,853,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	51,853,000
Accumulated Depreciation at December 31, 2014	10,386,000
Date of Construction/Acquisition	31-Dec-04
Office [Member] | Miscellaneous Investments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	1,363,000
Initial Cost to Company, Buildings and Improvements	51,420,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	-18,656,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	38,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	34,089,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	34,127,000
Accumulated Depreciation at December 31, 2014	14,629,000
Retail [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	638,310,000
Initial Cost to Company, Land and Improvements	299,653,000
Initial Cost to Company, Buildings and Improvements	1,238,047,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	209,427,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	357,522,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	1,389,605,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	1,747,127,000
Accumulated Depreciation at December 31, 2014	324,022,000
Retail [Member] | Miscellaneous Investments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	2,620,000
Initial Cost to Company, Land and Improvements	306,000
Initial Cost to Company, Buildings and Improvements	1,688,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	401,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	306,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	2,089,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	2,395,000
Accumulated Depreciation at December 31, 2014	934,000
Retail [Member] | Avenue at Tower City Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	174,726,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	-44,801,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	192,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	129,733,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	129,925,000
Accumulated Depreciation at December 31, 2014	102,352,000
Date of Construction/Acquisition	31-Dec-90
Retail [Member] | Ballston Common [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	42,500,000
Initial Cost to Company, Land and Improvements	170,000
Initial Cost to Company, Buildings and Improvements	18,069,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	67,230,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	442,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	85,027,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	85,469,000
Accumulated Depreciation at December 31, 2014	46,217,000
Date of Construction/Acquisition	31-Dec-86
Retail [Member] | Boulevard Mall [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	100,780,000
Initial Cost to Company, Land and Improvements	17,050,000
Initial Cost to Company, Buildings and Improvements	89,992,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	17,050,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	89,992,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	107,042,000
Accumulated Depreciation at December 31, 2014	758,000
Date of Construction/Acquisition	31-Dec-96
Retail [Member] | Brooklyn Commons [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	20,415,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	23,794,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,688,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	20,017,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	5,465,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	25,482,000
Accumulated Depreciation at December 31, 2014	1,729,000
Date of Construction/Acquisition	31-Dec-04
Retail [Member] | Shops at Atlantic Center Site V [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	3,238,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,485,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,047,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	3,676,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	4,723,000
Accumulated Depreciation at December 31, 2014	1,325,000
Date of Construction/Acquisition	31-Dec-98
Retail [Member] | Shops at Northfield Stapleton [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	4,830,000
Initial Cost to Company, Buildings and Improvements	80,687,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	87,474,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	24,879,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	148,112,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	172,991,000
Accumulated Depreciation at December 31, 2014	33,145,000
Date of Construction/Acquisition	31-Dec-05
Retail [Member] | Shops at Wiregrass [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	84,950,000
Initial Cost to Company, Land and Improvements	28,842,000
Initial Cost to Company, Buildings and Improvements	109,587,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,690,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	26,242,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	116,877,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	143,119,000
Accumulated Depreciation at December 31, 2014	22,385,000
Date of Construction/Acquisition	31-Dec-08
Retail [Member] | Station Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	34,608,000
Initial Cost to Company, Land and Improvements	8,611,000
Initial Cost to Company, Buildings and Improvements	37,484,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	38,995,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	25,674,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	59,416,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	85,090,000
Accumulated Depreciation at December 31, 2014	28,278,000
Date of Construction/Acquisition	31-Dec-94
Retail [Member] | Boilermaker Shops [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	12,437,000
Initial Cost to Company, Land and Improvements	529,000
Initial Cost to Company, Buildings and Improvements	12,468,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	5,212,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	527,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	17,682,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	18,209,000
Accumulated Depreciation at December 31, 2014	734,000
Date of Construction/Acquisition	31-Dec-12
Retail [Member] | Lumber Shed [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	10,000,000
Initial Cost to Company, Land and Improvements	306,000
Initial Cost to Company, Buildings and Improvements	12,820,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	478,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	306,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	13,298,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	13,604,000
Accumulated Depreciation at December 31, 2014	419,000
Date of Construction/Acquisition	31-Dec-13
Retail [Member] | Tower City Parking [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	2,317,000
Initial Cost to Company, Buildings and Improvements	11,789,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	16,084,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	2,048,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	28,142,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	30,190,000
Accumulated Depreciation at December 31, 2014	12,530,000
Date of Construction/Acquisition	31-Dec-90
Retail [Member] | Westchester's Ridge Hill [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	330,000,000
Initial Cost to Company, Land and Improvements	236,692,000
Initial Cost to Company, Buildings and Improvements	661,705,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	30,491,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	238,792,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	690,096,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	928,888,000
Accumulated Depreciation at December 31, 2014	73,216,000
Date of Construction/Acquisition	31-Dec-11
Arena [Member] | Barclays Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	457,055,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	890,213,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	49,816,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	940,029,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	940,029,000
Accumulated Depreciation at December 31, 2014	75,354,000
Date of Construction/Acquisition	31-Dec-12
Apartments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	1,376,329,000
Initial Cost to Company, Land and Improvements	255,597,000
Initial Cost to Company, Buildings and Improvements	1,976,245,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	238,971,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	260,693,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	2,210,120,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	2,470,813,000
Accumulated Depreciation at December 31, 2014	410,494,000
Apartments [Member] | Miscellaneous Investments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	8,093,000
Initial Cost to Company, Land and Improvements	149,000
Initial Cost to Company, Buildings and Improvements	40,697,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	6,474,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	152,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	47,168,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	47,320,000
Accumulated Depreciation at December 31, 2014	14,615,000
Apartments [Member] | 100 (100 Landsdowne) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	45,000,000
Initial Cost to Company, Land and Improvements	728,000
Initial Cost to Company, Buildings and Improvements	60,020,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	795,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	823,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	60,720,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	61,543,000
Accumulated Depreciation at December 31, 2014	14,267,000
Date of Construction/Acquisition	31-Dec-05
Apartments [Member] | 1111 Stratford [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	15,164,000
Initial Cost to Company, Land and Improvements	2,414,000
Initial Cost to Company, Buildings and Improvements	15,798,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,852,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	2,432,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	20,632,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	23,064,000
Accumulated Depreciation at December 31, 2014	1,023,000
Date of Construction/Acquisition	31-Dec-13
Apartments [Member] | 1251 S. Michigan [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	9,500,000
Initial Cost to Company, Land and Improvements	97,000
Initial Cost to Company, Buildings and Improvements	13,978,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,300,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	106,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	15,269,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	15,375,000
Accumulated Depreciation at December 31, 2014	3,148,000
Date of Construction/Acquisition	31-Dec-06
Apartments [Member] | 2175 Market Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	19,837,000
Initial Cost to Company, Land and Improvements	3,793,000
Initial Cost to Company, Buildings and Improvements	34,508,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,793,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	34,508,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	38,301,000
Accumulated Depreciation at December 31, 2014	344,000
Date of Construction/Acquisition	31-Dec-14
Apartments [Member] | 91 Sidney [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	28,065,000
Initial Cost to Company, Land and Improvements	213,000
Initial Cost to Company, Buildings and Improvements	42,276,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	213,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	42,276,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	42,489,000
Accumulated Depreciation at December 31, 2014	1,198,000
Date of Construction/Acquisition	31-Dec-02
Apartments [Member] | American Cigar Company [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	11,530,000
Initial Cost to Company, Land and Improvements	1,395,000
Initial Cost to Company, Buildings and Improvements	23,533,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	573,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,411,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	24,090,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	25,501,000
Accumulated Depreciation at December 31, 2014	4,626,000
Date of Construction/Acquisition	31-Dec-00
Apartments [Member] | Aster Conservatory Green [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	36,000,000
Initial Cost to Company, Land and Improvements	1,325,000
Initial Cost to Company, Buildings and Improvements	13,125,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	33,375,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,599,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	46,226,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	47,825,000
Accumulated Depreciation at December 31, 2014	1,707,000
Date of Construction/Acquisition	31-Dec-13
Apartments [Member] | Bayside Village [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	126,896,000
Initial Cost to Company, Land and Improvements	153,894,000
Initial Cost to Company, Buildings and Improvements	282,807,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	153,894,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	282,807,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	436,701,000
Accumulated Depreciation at December 31, 2014	0
Date of Construction/Acquisition	31-Dec-88
Apartments [Member] | Botanica Eastbridge [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	13,000,000
Initial Cost to Company, Land and Improvements	765,000
Initial Cost to Company, Buildings and Improvements	13,698,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	535,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	765,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	14,233,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	14,998,000
Accumulated Depreciation at December 31, 2014	1,269,000
Date of Construction/Acquisition	31-Dec-12
Apartments [Member] | Brookview Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	2,180,000
Initial Cost to Company, Land and Improvements	155,000
Initial Cost to Company, Buildings and Improvements	4,588,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	677,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	155,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	5,265,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	5,420,000
Accumulated Depreciation at December 31, 2014	3,698,000
Date of Construction/Acquisition	31-Dec-79
Apartments [Member] | Cameron Kinney [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	2,340,000
Initial Cost to Company, Buildings and Improvements	23,206,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,788,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	2,496,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	26,838,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	29,334,000
Accumulated Depreciation at December 31, 2014	5,132,000
Date of Construction/Acquisition	31-Dec-07
Apartments [Member] | Cedar Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	3,859,000
Initial Cost to Company, Land and Improvements	399,000
Initial Cost to Company, Buildings and Improvements	7,000,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	449,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	399,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	7,449,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	7,848,000
Accumulated Depreciation at December 31, 2014	3,774,000
Date of Construction/Acquisition	31-Dec-74
Apartments [Member] | Consolidated-Carolina [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	20,981,000
Initial Cost to Company, Land and Improvements	1,028,000
Initial Cost to Company, Buildings and Improvements	30,425,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,151,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,032,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	31,572,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	32,604,000
Accumulated Depreciation at December 31, 2014	7,871,000
Date of Construction/Acquisition	31-Dec-03
Apartments [Member] | Cutter's Ridge at Tobacco Row [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	389,000
Initial Cost to Company, Buildings and Improvements	4,356,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	-109,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	400,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	4,236,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	4,636,000
Accumulated Depreciation at December 31, 2014	1,160,000
Date of Construction/Acquisition	31-Dec-06
Apartments [Member] | Drake [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	26,685,000
Initial Cost to Company, Land and Improvements	1,353,000
Initial Cost to Company, Buildings and Improvements	38,104,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	8,289,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,353,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	46,393,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	47,746,000
Accumulated Depreciation at December 31, 2014	14,036,000
Date of Construction/Acquisition	31-Dec-98
Apartments [Member] | Easthaven at the Village [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	25,276,000
Initial Cost to Company, Land and Improvements	7,919,000
Initial Cost to Company, Buildings and Improvements	39,768,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	7,870,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	8,099,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	47,458,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	55,557,000
Accumulated Depreciation at December 31, 2014	20,285,000
Date of Construction/Acquisition	31-Dec-94
Apartments [Member] | Grand Lowry Lofts [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	1,448,000
Initial Cost to Company, Buildings and Improvements	22,726,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,344,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,621,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	25,897,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	27,518,000
Accumulated Depreciation at December 31, 2014	5,927,000
Date of Construction/Acquisition	31-Dec-00
Apartments [Member] | Hamel Mill Lofts [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	38,999,000
Initial Cost to Company, Land and Improvements	3,974,000
Initial Cost to Company, Buildings and Improvements	72,902,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,224,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,111,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	76,989,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	80,100,000
Accumulated Depreciation at December 31, 2014	10,893,000
Date of Construction/Acquisition	31-Dec-08
Apartments [Member] | Heritage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	28,000,000
Initial Cost to Company, Land and Improvements	7,433,000
Initial Cost to Company, Buildings and Improvements	42,202,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	9,885,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	7,505,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	52,015,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	59,520,000
Accumulated Depreciation at December 31, 2014	14,924,000
Date of Construction/Acquisition	31-Dec-02
Apartments [Member] | Hummingbird Pointe Apartments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	5,997,000
Initial Cost to Company, Land and Improvements	330,000
Initial Cost to Company, Buildings and Improvements	5,059,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	16,939,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,364,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	20,964,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	22,328,000
Accumulated Depreciation at December 31, 2014	9,598,000
Date of Construction/Acquisition	31-Dec-72
Apartments [Member] | Independence Place I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	4,080,000
Initial Cost to Company, Land and Improvements	210,000
Initial Cost to Company, Buildings and Improvements	6,671,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,328,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	225,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	7,984,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	8,209,000
Accumulated Depreciation at December 31, 2014	4,168,000
Date of Construction/Acquisition	31-Dec-73
Apartments [Member] | Independence Place II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	498,000
Initial Cost to Company, Buildings and Improvements	3,931,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,560,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	744,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	8,245,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	8,989,000
Accumulated Depreciation at December 31, 2014	1,901,000
Date of Construction/Acquisition	31-Dec-03
Apartments [Member] | KBL (Kennedy Biscuit Lofts) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	15,600,000
Initial Cost to Company, Land and Improvements	716,000
Initial Cost to Company, Buildings and Improvements	23,645,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,965,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	719,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	28,607,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	29,326,000
Accumulated Depreciation at December 31, 2014	16,120,000
Date of Construction/Acquisition	31-Dec-90
Apartments [Member] | Knolls [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	32,520,000
Initial Cost to Company, Land and Improvements	53,000
Initial Cost to Company, Buildings and Improvements	23,759,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	598,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	53,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	24,357,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	24,410,000
Accumulated Depreciation at December 31, 2014	11,511,000
Date of Construction/Acquisition	31-Dec-95
Apartments [Member] | Lofts 23 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	5,987,000
Initial Cost to Company, Land and Improvements	221,000
Initial Cost to Company, Buildings and Improvements	17,026,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	306,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	315,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	17,238,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	17,553,000
Accumulated Depreciation at December 31, 2014	4,582,000
Date of Construction/Acquisition	31-Dec-05
Apartments [Member] | Lofts at 1835 Arch [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	38,291,000
Initial Cost to Company, Land and Improvements	2,076,000
Initial Cost to Company, Buildings and Improvements	27,430,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	12,719,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	2,082,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	40,143,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	42,225,000
Accumulated Depreciation at December 31, 2014	11,097,000
Date of Construction/Acquisition	31-Dec-01
Apartments [Member] | Lucky Strike [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	15,278,000
Initial Cost to Company, Land and Improvements	1,105,000
Initial Cost to Company, Buildings and Improvements	34,095,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,207,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,019,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	33,388,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	36,407,000
Accumulated Depreciation at December 31, 2014	6,342,000
Date of Construction/Acquisition	31-Dec-08
Apartments [Member] | Mercantile Place on Main [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	36,329,000
Initial Cost to Company, Land and Improvements	8,876,000
Initial Cost to Company, Buildings and Improvements	75,478,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	8,085,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	8,798,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	83,641,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	92,439,000
Accumulated Depreciation at December 31, 2014	16,071,000
Date of Construction/Acquisition	31-Dec-08
Apartments [Member] | Metro 417 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	47,997,000
Initial Cost to Company, Land and Improvements	8,545,000
Initial Cost to Company, Buildings and Improvements	67,326,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	5,417,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	8,547,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	72,741,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	81,288,000
Accumulated Depreciation at December 31, 2014	15,131,000
Date of Construction/Acquisition	31-Dec-05
Apartments [Member] | Midtown Towers [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	12,969,000
Initial Cost to Company, Land and Improvements	1,215,000
Initial Cost to Company, Buildings and Improvements	11,091,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	11,860,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,309,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	22,857,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	24,166,000
Accumulated Depreciation at December 31, 2014	10,281,000
Date of Construction/Acquisition	31-Dec-69
Apartments [Member] | Museum Towers [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	30,755,000
Initial Cost to Company, Land and Improvements	3,474,000
Initial Cost to Company, Buildings and Improvements	18,158,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	6,586,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,909,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	24,309,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	28,218,000
Accumulated Depreciation at December 31, 2014	9,416,000
Date of Construction/Acquisition	31-Dec-97
Apartments [Member] | North Church Towers and Gardens [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	5,090,000
Initial Cost to Company, Land and Improvements	789,000
Initial Cost to Company, Buildings and Improvements	4,037,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,168,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	816,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	7,178,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	7,994,000
Accumulated Depreciation at December 31, 2014	1,756,000
Date of Construction/Acquisition	31-Dec-09
Apartments [Member] | One Franklintown [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	37,190,000
Initial Cost to Company, Land and Improvements	1,658,000
Initial Cost to Company, Buildings and Improvements	31,489,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	9,830,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,741,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	41,236,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	42,977,000
Accumulated Depreciation at December 31, 2014	20,783,000
Date of Construction/Acquisition	31-Dec-88
Apartments [Member] | Pavilion [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	51,728,000
Initial Cost to Company, Land and Improvements	5,250,000
Initial Cost to Company, Buildings and Improvements	29,505,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	15,552,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	5,249,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	45,058,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	50,307,000
Accumulated Depreciation at December 31, 2014	12,968,000
Date of Construction/Acquisition	31-Dec-92
Apartments [Member] | Perrytown Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	4,587,000
Initial Cost to Company, Land and Improvements	463,000
Initial Cost to Company, Buildings and Improvements	6,898,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	516,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	463,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	7,414,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	7,877,000
Accumulated Depreciation at December 31, 2014	4,051,000
Date of Construction/Acquisition	31-Dec-73
Apartments [Member] | Presidio Landmark [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	43,563,000
Initial Cost to Company, Land and Improvements	2,060,000
Initial Cost to Company, Buildings and Improvements	92,687,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,983,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	2,064,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	97,666,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	99,730,000
Accumulated Depreciation at December 31, 2014	13,525,000
Date of Construction/Acquisition	31-Dec-10
Apartments [Member] | Queenswood [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	28,729,000
Initial Cost to Company, Land and Improvements	321,000
Initial Cost to Company, Buildings and Improvements	39,243,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,072,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	327,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	40,309,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	40,636,000
Accumulated Depreciation at December 31, 2014	18,121,000
Date of Construction/Acquisition	31-Dec-90
Apartments [Member] | River Lofts at Ashton Mill [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	16,930,000
Initial Cost to Company, Land and Improvements	2,885,000
Initial Cost to Company, Buildings and Improvements	33,844,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	12,479,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,247,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	45,961,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	49,208,000
Accumulated Depreciation at December 31, 2014	9,948,000
Date of Construction/Acquisition	31-Dec-05
Apartments [Member] | Sky55 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	68,517,000
Initial Cost to Company, Land and Improvements	3,965,000
Initial Cost to Company, Buildings and Improvements	80,930,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,989,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	4,016,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	84,868,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	88,884,000
Accumulated Depreciation at December 31, 2014	20,041,000
Date of Construction/Acquisition	31-Dec-06
Apartments [Member] | The Aster Town Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	8,364,000
Initial Cost to Company, Land and Improvements	487,000
Initial Cost to Company, Buildings and Improvements	9,901,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	365,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	493,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	10,260,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	10,753,000
Accumulated Depreciation at December 31, 2014	1,007,000
Date of Construction/Acquisition	31-Dec-12
Apartments [Member] | The Continental [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	37,176,000
Initial Cost to Company, Land and Improvements	1,586,000
Initial Cost to Company, Buildings and Improvements	48,455,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	1,180,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,586,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	49,635,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	51,221,000
Accumulated Depreciation at December 31, 2014	3,404,000
Date of Construction/Acquisition	31-Dec-13
Apartments [Member] | The Met (Metropolitan) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014		38,900,000
Initial Cost to Company, Land and Improvements		4,420,000
Initial Cost to Company, Buildings and Improvements		36,557,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs		10,169,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements		4,477,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements		46,669,000
Gross Amount at Which Carried at Close of December 31, 2014, Total		51,146,000
Accumulated Depreciation at December 31, 2014		23,264,000
Date of Construction/Acquisition	31-Dec-89
Apartments [Member] | The Uptown [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	124,177,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	138,710,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	142,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	954,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	137,898,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	138,852,000
Accumulated Depreciation at December 31, 2014	6,333,000
Date of Construction/Acquisition	31-Dec-13
Apartments [Member] | The Wilson [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	12,776,000
Initial Cost to Company, Land and Improvements	2,217,000
Initial Cost to Company, Buildings and Improvements	16,565,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	3,627,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	1,937,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	20,472,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	22,409,000
Accumulated Depreciation at December 31, 2014	4,018,000
Date of Construction/Acquisition	31-Dec-07
Apartments [Member] | Foundry Lofts [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	44,790,000
Initial Cost to Company, Land and Improvements	2,086,000
Initial Cost to Company, Buildings and Improvements	52,806,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	5,959,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	2,092,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	58,759,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	60,851,000
Accumulated Depreciation at December 31, 2014	5,005,000
Date of Construction/Acquisition	31-Dec-11
Apartments [Member] | Twelve12 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	75,606,000
Initial Cost to Company, Land and Improvements	5,444,000
Initial Cost to Company, Buildings and Improvements	106,509,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	5,444,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	106,509,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	111,953,000
Accumulated Depreciation at December 31, 2014	1,355,000
Date of Construction/Acquisition	31-Dec-14
Apartments [Member] | Town Center ( Botanica on the Green & Crescent Flats) [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	37,436,000
Initial Cost to Company, Land and Improvements	3,436,000
Initial Cost to Company, Buildings and Improvements	63,073,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	4,898,000
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,344,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	68,063,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	71,407,000
Accumulated Depreciation at December 31, 2014	18,520,000
Date of Construction/Acquisition	31-Dec-04
Apartments [Member] | Winchester Lofts [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	35,902,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	45,650,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	45,650,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	45,650,000
Accumulated Depreciation at December 31, 2014	280,000
Date of Construction/Acquisition	31-Dec-14
Land Inventory [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	97,469,000
Initial Cost to Company, Buildings and Improvements	0
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	97,469,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Total	97,469,000
Accumulated Depreciation at December 31, 2014	0
Land Inventory [Member] | Stapleton [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	51,604,000
Initial Cost to Company, Buildings and Improvements	0
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	51,604,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Total	51,604,000
Accumulated Depreciation at December 31, 2014	0
Land Inventory [Member] | LiveWork Las Vegas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	29,164,000
Initial Cost to Company, Buildings and Improvements	0
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	29,164,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Total	29,164,000
Accumulated Depreciation at December 31, 2014	0
Land Inventory [Member] | Commercial Outlots [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	16,701,000
Initial Cost to Company, Buildings and Improvements	0
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	16,701,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Total	16,701,000
Accumulated Depreciation at December 31, 2014	0
Corporate and Other Equipment [Member] | Corporate office [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	10,738,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	10,738,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	10,738,000
Accumulated Depreciation at December 31, 2014	9,646,000
Construction Projects [Member] | Miscellaneous Investments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	6,503,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	6,503,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	6,503,000
Accumulated Depreciation at December 31, 2014	0
Construction Projects [Member] | 1812 Ashland Ave [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	29,422,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	8,940,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	8,940,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	8,940,000
Accumulated Depreciation at December 31, 2014	0
Construction Projects [Member] | Aster Town Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	272,000
Initial Cost to Company, Buildings and Improvements	2,220,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	272,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	2,220,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	2,492,000
Accumulated Depreciation at December 31, 2014	0
Construction Projects [Member] | B2 BKLYN [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	56,605,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	40,538,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	40,538,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	40,538,000
Accumulated Depreciation at December 31, 2014	0
Construction Projects [Member] | Blossom Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	5,300,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	30,483,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	30,483,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	30,483,000
Accumulated Depreciation at December 31, 2014	0
Construction Projects [Member] | Kapolei Lofts [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	20,443,000
Initial Cost to Company, Buildings and Improvements	11,915,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	20,443,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	11,915,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	32,358,000
Accumulated Depreciation at December 31, 2014	0
Construction Projects [Member] | The Yards - Arris [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	8,395,000
Initial Cost to Company, Buildings and Improvements	38,611,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	8,395,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	38,611,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	47,006,000
Accumulated Depreciation at December 31, 2014	0
Construction Projects [Member] | 1001 4th Street, SW [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	3,709,000
Initial Cost to Company, Buildings and Improvements	13,059,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	3,709,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	13,059,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	16,768,000
Accumulated Depreciation at December 31, 2014	0
Development Projects [Member] | Miscellaneous Investments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	27,967,000
Initial Cost to Company, Land and Improvements	24,933,000
Initial Cost to Company, Buildings and Improvements	104,973,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	24,933,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	104,973,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	129,906,000
Accumulated Depreciation at December 31, 2014	0
Development Projects [Member] | The Science + Technology Park at Johns Hopkins [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	5,386,000
Initial Cost to Company, Buildings and Improvements	15,599,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	5,386,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	15,599,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	20,985,000
Accumulated Depreciation at December 31, 2014	0
Development Projects [Member] | Ballston Common Mall Redevelopment [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	13,267,000
Initial Cost to Company, Buildings and Improvements	6,357,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	13,267,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	6,357,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	19,624,000
Accumulated Depreciation at December 31, 2014	0
Development Projects [Member] | Broadway and Hill [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	27,129,000
Initial Cost to Company, Buildings and Improvements	6,203,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	27,129,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	6,203,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	33,332,000
Accumulated Depreciation at December 31, 2014	0
Development Projects [Member] | Pier 70 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	12,521,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	12,521,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	12,521,000
Accumulated Depreciation at December 31, 2014	0
Development Projects [Member] | The Yards [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	4,300,000
Initial Cost to Company, Land and Improvements	0
Initial Cost to Company, Buildings and Improvements	58,026,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	0
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	58,026,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	58,026,000
Accumulated Depreciation at December 31, 2014	0
Development Projects [Member] | Waterfront Station [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	0
Initial Cost to Company, Land and Improvements	7,431,000
Initial Cost to Company, Buildings and Improvements	11,044,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	7,431,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	11,044,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	18,475,000
Accumulated Depreciation at December 31, 2014	0
Construction and Development [Member]
Real Estate and Accumulated Depreciation [Line Items]
Amount of Encumbrance at December 31,2014	123,594,000
Initial Cost to Company, Land and Improvements	110,965,000
Initial Cost to Company, Buildings and Improvements	366,992,000
Cost Capitalized Subsequent to Acquisition, Improvements and Carrying Costs	0
Gross Amount at Which Carried at Close of December 31, 2014, Land and Improvements	110,965,000
Gross Amount at Which Carried at Close of December 31, 2014, Buildings and Improvements	366,992,000
Gross Amount at Which Carried at Close of December 31, 2014, Total	477,957,000
Accumulated Depreciation at December 31, 2014	$0

Real_Estate_and_Accumulated_De2

Real Estate and Accumulated Depreciation (Details 1) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Jan. 31, 2013
Reconciliations of total real estate carrying value are as follows:
Balance at beginning of period	$10,026,010,000	$8,475,571,000	$9,646,870,000
Additions during period-
Improvements	471,653,000	399,411,000	791,705,000
Other additions, primarily as a result of change in accounting method of property	171,260,000	603,589,000	60,897,000
Other acquisitions	8,514,000	0	12,587,000
Total additions	651,427,000	1,003,000,000	865,189,000
Deductions during period-
Cost of real estate sold or retired	-439,130,000	-302,181,000	-370,110,000
Cost of real estate in connection with disposal of partial interests	-1,180,016,000	-536,255,000	0
Other deductions, primarily due to impairments and as a result of change in accounting method of property	-582,720,000	-311,148,000	-115,939,000
Total deductions	-2,201,866,000	-1,149,584,000	-486,049,000
Balance at end of period	8,475,571,000	8,328,987,000	10,026,010,000
Reconciliations of accumulated depreciation are as follows:
Balance at beginning of period	1,654,632,000	1,469,328,000	1,526,503,000
Additions during period - Charged to profit or loss	255,824,000	206,041,000	204,070,000
Net other additions (deductions) during period - Acquisitions, retirements, sales or disposals	-441,128,000	-119,404,000	-75,941,000
Balance at end of period	$1,469,328,000	$1,555,965,000	$1,654,632,000

Real_Estate_and_Accumulated_De3

Real Estate and Accumulated Depreciation (Details Textual) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Real Estate and Accumulated Depreciation (Textual) [Abstract]
Aggregate cost for federal income tax purposes	7,293,315
Arena [Member]
Real Estate and Accumulated Depreciation (Textual) [Abstract]
Estimated useful life of building and improvements	34 years 6 months
Minimum [Member] | Building and Improvements (Other than Arena) [Member]
Real Estate and Accumulated Depreciation (Textual) [Abstract]
Estimated useful life of building and improvements	40 years
Minimum [Member] | Equipment and Fixtures [Member]
Real Estate and Accumulated Depreciation (Textual) [Abstract]
Estimated useful life of building and improvements	5 years
Maximum [Member] | Building and Improvements (Other than Arena) [Member]
Real Estate and Accumulated Depreciation (Textual) [Abstract]
Estimated useful life of building and improvements	50 years
Maximum [Member] | Equipment and Fixtures [Member]
Real Estate and Accumulated Depreciation (Textual) [Abstract]
Estimated useful life of building and improvements	15 years