InvenTrust Properties (IVT) 10-Q 13 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 12, 2013
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'Inland American Real Estate Trust, Inc.	'
Entity Central Index Key	'0001307748	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	907,688,322
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investment properties:	'	'
Land	$1,261,347	$1,882,715
Building and other improvements	6,614,790	8,679,105
Construction in progress	178,310	337,384
Total	8,054,447	10,899,204
Less accumulated depreciation	-1,204,624	-1,581,524
Net investment properties	6,849,823	9,317,680
Cash and cash equivalents	383,802	220,779
Restricted cash and escrows	132,637	104,027
Investment in marketable securities	249,593	327,655
Investment in unconsolidated entities	306,442	253,799
Accounts and rents receivable (net of allowance of $8,367 and $10,348)	72,895	121,773
Intangible assets, net	169,393	298,828
Deferred costs and other assets	106,886	115,343
Assets held for sale	1,243,118	0
Total assets	9,514,589	10,759,884
Liabilities	'	'
Debt	3,988,385	6,006,146
Accounts payable and accrued expenses	153,947	142,835
Distributions payable	37,712	37,059
Intangible liabilities, net	59,502	80,769
Other liabilities	88,385	150,325
Liabilities held for sale	879,992	0
Total liabilities	5,207,923	6,417,134
Commitments and contingencies	'	'
Stockholders’ Equity	'	'
Preferred stock, $.001 par value, 40,000,000 shares authorized, none outstanding	0	0
Common stock, $.001 par value, 1,460,000,000 shares authorized, 905,089,271 and 889,424,572 shares issued and outstanding	905	889
Additional paid in capital	8,030,508	7,921,913
Accumulated distributions in excess of net loss	-3,791,975	-3,664,591
Accumulated other comprehensive income	67,103	84,414
Total Company stockholders’ equity	4,306,541	4,342,625
Noncontrolling interests	125	125
Total equity	4,306,666	4,342,750
Total liabilities and equity	$9,514,589	$10,759,884

Consolidated_Balance_Sheets_Un1

Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accounts and rents receivable, allowance	$8,367	$10,348
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	40,000,000	40,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	1,460,000,000	1,460,000,000
Common stock, shares issued	905,089,271	889,424,572
Common stock, shares outstanding	905,089,271	889,424,572

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Other Comprehensive Income (Unaudited) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Income:	'		'		'		'
Rental income	$92,826		$89,890		$279,653		$265,383
Tenant recovery income	17,129		20,008		54,570		58,186
Other property income	2,165		1,672		5,662		4,745
Lodging income	217,927		179,662		622,618		507,932
Total income	330,047		291,232		962,503		836,246
Expenses:	'		'		'		'
General and administrative expenses	14,296		9,112		37,233		27,418
Property operating expenses	22,099		21,130		64,016		60,126
Lodging operating expenses	141,025		117,950		401,109		329,223
Real estate taxes	21,590		19,894		65,383		59,948
Depreciation and amortization	76,013		80,089		233,553		236,665
Business management fee	9,648		9,989		29,127		29,982
Provision for asset impairment	39,942	[1]	47,015	[2]	228,370	[3]	53,842	[4]
Total expenses	324,613		305,179		1,058,791		797,204
Operating income (loss)	5,434		-13,947		-96,288		39,042
Interest and dividend income	4,568		6,130		14,761		17,043
Other income (loss)	1,058		-405		14,391		1,039
Interest expense	-52,703		-54,046		-161,665		-157,446
Equity in earnings of unconsolidated entities	3,000		291		11,044		2,807
Gain, (loss) and (impairment) of investment in unconsolidated entities, net	-5,471		-1,556		-6,039		-5,756
Realized gain, (loss) and (impairment) on securities, net	14,222		4,398		31,866		3,376
Loss before income taxes	-29,892		-59,135		-191,930		-99,895
Income tax expense	-4,250		-5,147		-6,955		-9,774
Net loss from continuing operations	-34,142		-64,282		-198,885		-109,669
Net income from discontinued operations	271,683		51,365		408,166		48,749
Net income (loss)	237,541		-12,917		209,281		-60,920
Less: Net income attributable to noncontrolling interests	-8		-4,659		-16		-4,851
Net income (loss) attributable to Company	237,533		-17,576		209,265		-65,771
Net loss per common share, from continuing operations (in dollars per share)	($0.04)		($0.08)		($0.22)		($0.13)
Net income (loss) per common share, from discontinued operations (in dollars per share)	$0.30		$0.06		$0.45		$0.06
Net income (loss) per common share, basic and diluted (in dollars per share)	$0.26		($0.02)		$0.23		($0.07)
Weighted average number of common shares outstanding, basic and diluted (in shares)	902,456,636		881,717,879		897,300,455		877,280,730
Other comprehensive income (loss):	'		'		'		'
Unrealized gain (loss) on investment securities	-11,823		7,173		13,993		32,672
Unrealized gain (loss) on derivatives	-49		-695		-53		-898
Reclassification adjustment for amounts recognized in net income	-14,138		-3,326		-31,251		-1,552
Comprehensive income (loss) attributable to the Company	$211,523		($14,424)		$191,954		($35,549)
[1]	Total provision for asset impairment included $11,724 related to three retail properties, $26,175 related to two lodging properties, and $2,043 related to three non-core properties.
[2]	Total provision for asset impairment included $34,345 related to two retail properties and $12,670 related to four non-core properties.
[3]	Total provision for asset impairment included $24,540 related to five retail properties, $26,175 related to two lodging properties, $177,655 related to ten non-core properties.
[4]	The total provision for asset impairment relates to $37,017 related to three retail properties, and $16,825 related to five non-core properties.

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Equity (Unaudited) (USD $)	Total	Common Stock	Additional Paid-in Capital	Accumulated Distributions in excess of Net Loss	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
In Thousands, except Share data, unless otherwise specified
Balance, value at Dec. 31, 2011	$4,663,314	$869	$7,775,880	($3,155,222)	$41,948	($161)
Balance, shares at Dec. 31, 2011	'	869,187,360	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income (loss)	-60,920	'	'	-65,771	'	4,851
Unrealized gain on investment securities	32,672	'	'	'	32,672	'
Unrealized (gain) loss on derivatives	-898	'	'	'	-898	'
Reclassification adjustment from AOCI on derivatives and securities	-1,552	'	'	'	-1,552	'
Distributions declared	-332,930	'	'	-329,124	'	-3,806
Disposal of noncontrolling interest	-759	'	'	'	'	-759
Proceeds from distribution reinvestment plan, value	144,972	20	144,952	'	'	'
Proceeds from distribution reinvestment plan, shares	'	20,081,542	'	'	'	'
Share repurchase program, value	-35,762	-5	-35,757	'	'	'
Share repurchase program, shares	'	-4,953,207	'	'	'	'
Balance, value at Sep. 30, 2012	4,408,137	884	7,885,075	-3,550,117	72,170	125
Balance, shares at Sep. 30, 2012	'	884,315,695	'	'	'	'
Balance, value at Dec. 31, 2012	4,342,750	889	7,921,913	-3,664,591	84,414	125
Balance, shares at Dec. 31, 2012	'	889,424,572	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income (loss)	209,281	'	'	209,265	'	16
Unrealized gain on investment securities	13,993	'	'	'	13,993	'
Unrealized (gain) loss on derivatives	-53	'	'	'	-53	'
Reclassification adjustment from AOCI on derivatives and securities	-31,251	'	'	'	-31,251	'
Distributions declared	-336,665	'	'	-336,649	'	-16
Proceeds from distribution reinvestment plan, value	136,621	20	136,601	'	'	'
Proceeds from distribution reinvestment plan, shares	'	19,705,741	'	'	'	'
Share repurchase program, value	-28,010	-4	-28,006	'	'	'
Share repurchase program, shares	'	-4,041,042	'	'	'	'
Balance, value at Sep. 30, 2013	$4,306,666	$905	$8,030,508	($3,791,975)	$67,103	$125
Balance, shares at Sep. 30, 2013	'	905,089,271	'	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net income (loss)	$209,281	($60,920)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'
Depreciation and amortization	297,979	331,863
Amortization of above and below market leases, net	-2,234	-1,622
Amortization of debt premiums, discounts and financing costs	11,475	12,162
Straight-line rental income	-7,073	-8,557
Provision for asset impairment	229,486	66,888
Gain on sale of property, net	-414,923	-29,677
Loss on extinguishment of debt	18,984	238
Equity in earnings of unconsolidated entities	-11,044	-2,807
Distributions from unconsolidated entities	4,363	5,708
(Gain), loss and impairment of investment in unconsolidated entities	6,039	5,756
Realized (gain) loss on securities	-31,866	-5,275
Impairment on investment in securities	0	1,899
Other non-cash adjustments	0	1,214
Changes in assets and liabilities:	'	'
Accounts and rents receivable	-10,157	-2,313
Deferred costs and other assets	12,272	7,173
Accounts payable and accrued expenses	21,622	34,974
Other liabilities	-8,549	-4,366
Net cash flows provided by operating activities	325,655	352,338
Cash flows from investing activities:	'	'
Purchase of investment properties	-783,594	-237,828
Acquired in-place and market lease intangibles, net	-11,609	-6,572
Acquired goodwill	-10,918	-23,735
Capital expenditures and tenant improvements	-48,691	-60,487
Investment in development projects	-35,823	-79,479
Proceeds from sale of investment properties, net	1,884,538	356,467
Purchase of marketable securities	-3,686	-21,715
Proceeds from sale of marketable securities	95,741	27,217
Investment in unconsolidated entities	-5,275	-30
Distributions from unconsolidated entities	15,315	27,198
Proceeds from the sale of and return of capital from unconsolidated entities	29,622	0
Payment of leasing fees	-3,970	-9,139
Payments from notes receivable	1,632	18
Restricted escrows and other assets	-10,792	-9,113
Other (assets) liabilities	-19,948	9,311
Net cash flows provided by (used in) investing activities	1,092,542	-27,887
Cash flows from financing activities:	'	'
Proceeds from the distribution reinvestment program	136,619	144,972
Shares repurchased	-28,010	-35,762
Distributions paid	-335,993	-328,493
Proceeds from debt and notes payable	656,805	524,753
Payoffs of debt	-1,561,408	-492,971
Principal payments of mortgage debt	-38,168	-24,078
Proceeds from and (payoff of) margin securities debt, net	-65,354	10,019
Payment of loan fees and deposits	-9,649	-5,984
Distributions paid to noncontrolling interests, net	-16	-3,806
Payments for contingent consideration	-10,000	0
Disposal of noncontrolling interests	0	-759
Net cash flows used in financing activities	-1,255,174	-212,109
Net increase in cash and cash equivalents	163,023	112,342
Cash and cash equivalents, at beginning of period	220,779	218,163
Cash and cash equivalents, at end of period	383,802	330,505
Supplemental disclosure of cash flow information:	'	'
Purchase of investment properties	-819,837	-412,572
Tenant and real estate tax liabilities assumed at acquisition, net	552	490
Assumption of mortgage debt at acquisition	35,963	180,000
Non-cash discount (premium) of mortgage debt assumed	702	-5,746
Assumption of lender held escrows	-974	0
Supplemental cash flow, total	-783,594	-237,828
Cash paid for interest, net capitalized interest of $4,238 and $5,601	209,235	202,779
Supplemental schedule of non-cash investing and financing activities:	'	'
Property surrendered in extinguishment of debt	5,289	6,106
Properties contributed to an unconsolidated entity, net of related payables	$99,092	$60,659

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Capitalized interest	$4,238	$5,601

Organization

Organization	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization	'
	Organization
	Inland American Real Estate Trust, Inc. (the “Company”) was formed on October 4, 2004 (inception) to acquire and manage a diversified portfolio of commercial real estate, primarily retail, office, industrial, multi-family (both conventional and student housing), and lodging properties, located in the United States. The Company is executing on a long-term portfolio strategy to focus specifically on the retail, lodging, and student housing asset classes.
	The accompanying consolidated financial statements include the accounts of the Company, as well as all wholly owned subsidiaries and consolidated joint venture investments. Wholly owned subsidiaries generally consist of limited liability companies (LLCs) and limited partnerships (LPs). The effects of all significant intercompany transactions have been eliminated.
	Each property is owned by a separate legal entity which maintains its own books and financial records and each entity's assets are not available to satisfy the liabilities of other affiliated entities, except as otherwise disclosed in Debt Note 8.
	At September 30, 2013, the Company owned a portfolio of 268 properties, in which the operating activity is reflected in continuing operations on the consolidated statements of operations and other comprehensive income for the three and nine months ended September 30, 2013 and 2012. Additionally, at September 30, 2013, the Company classified 225 properties as held for sale, in which the operating activity is reflected in discontinued operations on the consolidated statements of operations and other comprehensive income for the three and nine months ended September 30, 2013 and 2012. Comparatively, at September 30, 2012, the Company owned 887 properties, and there were no properties classified as held for sale.
	The breakdown by segment of the 268 owned properties at September 30, 2013 is as follows:
	Segment	Property Count	Square Feet / Rooms / Beds
	Retail	121	17,062,813	Square feet
	Lodging	93	18,222	Rooms
	Student Housing	14	8,350	Beds
	Non-core	40	6,754,444	Square feet

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	There have been no changes to the Company’s significant accounting policies in the nine months ended September 30, 2013. Refer to the Company’s 2012 Form 10-K for a summary of significant accounting policies.
	Certain reclassifications have been made to the 2012 consolidated financial statements to conform to the 2013 presentations. The reclasses primarily represent reclassifications of revenue and expenses to discontinued operations as a result of the sales of investment properties and the reclassification of properties as held for sale in 2013.

Acquired_Properties

Acquired Properties	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Acquired Properties	'
	Acquired Properties
	The Company records identifiable assets, liabilities, noncontrolling interests and goodwill acquired in a business combination at fair value. The Company acquired fifteen properties for the nine months ended September 30, 2013 and eight properties for nine months ended September 30, 2012, for a gross acquisition price of $831,850 and $457,300, respectively. The table below reflects acquisition activity during the nine months ended September 30, 2013.
	Segment	Property	Date	Gross Acquisition Price		Square Feet / Rooms / Beds
	Lodging	Bohemian Hotel Celebration	2/7/13	$	17,500	115	Rooms
	Retail	Westport Village	2/22/13	33,550		169,603	Square Feet
	Lodging	Andaz San Diego Hotel	3/4/13	53,000		159	Rooms
	Student Housing	University House @ TCU	3/7/13	15,850		118	Beds
	Lodging	Residence Inn Denver Center	4/17/13	80,000		228	Rooms
	Retail	South Frisco Village Shopping Center	5/9/13	34,350		227,175	Square Feet
	Student Housing	University House Fayetteville	7/19/13	42,200		654	Beds
	Retail	Walden Park Shopping Center	8/7/13	9,300		33,637	Square Feet
	Student Housing	University House Tempe	8/13/13	103,000		637	Beds
	Lodging	Westin Galleria Houston	8/22/13	120,000		487	Rooms
	Lodging	Westin Oaks Houston	8/22/13	100,000		406	Rooms
	Lodging	Andaz Savannah	9/10/13	43,000		151	Rooms
	Lodging	Andaz Napa Valley	9/20/13	72,000		141	Rooms
	Lodging	Hyatt Regency Santa Clara	9/20/13	93,000		501	Rooms
	Retail	West Creek Shopping Center	9/26/13	15,100		53,338	Square Feet
	Total			$	831,850
	For properties acquired as of September 30, 2013, the Company recorded revenue of $40,335 and property net income of $14,294, not including related expensed acquisition costs in 2013. For properties acquired as of September 30, 2012, the Company recorded revenue of $37,368 and property net income of $5,384, not including related expensed acquisition costs in 2012. During the nine months ended September 30, 2013 and 2012, the Company incurred $1,581 and $1,510, respectively, of acquisition and transaction costs that were recorded in general and administrative expenses on the consolidated statements of operations and other comprehensive income.

Discontinued_Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	Discontinued Operations
	The Company sold 304 properties and surrendered one property to the lender (in satisfaction of non-recourse debt) during the nine months ended September 30, 2013 for a gross disposition price of $1,815,900. There were eighty-six properties disposed of and one property surrendered to the lender for the nine months ended September 30, 2012 for a gross disposition price of $432,500. The table below reflects sales activity for the nine months ended September 30, 2013.
	Segment	Property	Date	Gross Disposition Price			Sq Ft / Rooms / Units
	Non-core	Citizens Banks - 8 Properties	Q1 2013	$	6,600		23,428	Square Feet
	Lodging	Baymont Inn - Jacksonville	2/6/13	3,500			118	Rooms
	Non-core	Nantucket Apartments	3/13/13	46,100			394	Units
	Lodging	Homewood Suites - Durham	3/21/13	8,300			96	Rooms
	Non-core	SunTrust - 27 Properties	3/22/13	50,800			146,851	Square Feet
	Non-core	IDS Center	4/25/13	253,500			1,462,374	Square Feet
	Non-core	Medical Office Building- 3 Properties	5/2/13	36,400			181,703	Square Feet
	Non-core	Citizens Banks - 5 Properties	Q2 2013	7,900			27,182	Square Feet
	Non-core	SunTrust - 176 Properties	Q2 2013	307,700			883,279	Square Feet
	Non-core	Citizens Bank - 1 property	7/23/13	1,400			4,810	Square Feet
	Lodging	Fairfield Inn-Ann Arbor	8/15/13	8,000			109	Rooms
	Non-core	Kato/Milmont	8/23/13	6,900			125,818	Square Feet
	Non-core	Logan's Roadhouse	9/6/13	2,600			7,995	Square Feet
	Non-core	SunTrust - 7 properties	Q3 2013	13,700			28,579	Square Feet
	Non-core	Triple net portfolio - 56 properties	Q3 2013	602,500			5,435,508	Square Feet
	Non-core	Apartment portfolio - 14 properties	Q3 2013	460,000			4,378	Units
	Total			$	1,815,900
	The Company classified 225 properties as held for sale as of September 30, 2013, and the operations are reflected as discontinued operations on the consolidated statements of operations and other comprehensive income for the three and nine months ended September 30, 2013 and 2012. As of September 30, 2012, there were no properties classified as held for sale.
	The Company has presented separately as discontinued operations in all periods the results of operations for all disposed and held for sale properties in consolidated operations. The components of the Company’s discontinued operations are presented below, which include the results of operations during the three and nine months ended September 30, 2013 and 2012 in which the Company owned such properties.
		Three Months Ended							Nine Months Ended
		September 30, 2013				September 30, 2012			September 30, 2013			September 30, 2012
	Revenues	$	47,654			$	95,541		$	185,579		$	297,425
	Expenses	24,871				57,414			101,413			181,223
	Provision for asset impairment	—				5,083			1,116			13,046
	Operating income from discontinued operations	$	22,783			$	33,044		$	83,050		$	103,156
	Interest expense and other	(15,741		)		(14,487		)	(58,134		)	(83,846		)
	Gain on sale of properties, net	281,216				29,580			400,938			27,610
	Gain (loss) on extinguishment of debt	(16,575		)		1,161			(17,672		)	(238		)
	Gain (loss) on transfer of assets	—				2,067			(16		)	2,067
	Net income from discontinued operations	$	271,683			$	51,365		$	408,166		$	48,749
	For the nine months ended September 30, 2013, the Company had generated proceeds from the sale of properties of $1,782,785.

Investment_in_Partially_Owned_

Investment in Partially Owned Entities	9 Months Ended
	Sep. 30, 2013
Investment in Partially Owned Entities [Abstract]	'
Investment in Partially Owned Entities	'
	Investment in Partially Owned Entities
	Consolidated Entities
	The Company has ownership interests of 67% in various limited liability companies which own nine shopping centers. These nine shopping centers are considered held for sale as of September 30, 2013. The assets and liabilities associated with these nine shopping centers are classified separately on the consolidated balance sheets for the most recent reporting period. The operations for the periods presented are classified on the consolidated statements of operations and other comprehensive income as discontinued operations for all periods presented. These entities are considered variable interest entities (“VIEs”) as defined in ASC 810, and the Company is considered the primary beneficiary of each of these entities. Therefore, these entities are consolidated by the Company. The entities' agreements contain put/call provisions which grant the right to the outside owners and the Company to require these entities to redeem the ownership interests of the outside owners during future periods. Because the outside ownership interests are subject to a put/call arrangement requiring settlement for a fixed amount, these entities are treated as 100% owned subsidiaries by the Company with the amount of $47,762 as of September 30, 2013 reflected as a financing and included within other liabilities in the accompanying consolidated financial statements. Interest expense is recorded on these liabilities in an amount generally equal to the preferred return due to the outside owners as provided in the entities' agreements.
	For the VIEs where the Company is the primary beneficiary, the following are the liabilities of the consolidated VIEs which are not recourse to the Company, and the assets that can be used only to settle those obligations.
		As of September 30, 2013				As of December 31, 2012
	Net investment properties	$	110,658			$	113,476
	Other assets	8,710				8,687
	Total assets	119,368				122,163
	Mortgages, notes and margins payable	(72,265		)		(84,291		)
	Other liabilities	(49,577		)		(49,648		)
	Total liabilities	(121,842		)		(133,939		)
	Net assets	$	(2,474	)		$	(11,776	)
	Unconsolidated Entities
	The entities listed below are owned by the Company and other unaffiliated parties in joint ventures. Net income, distributions and capital transactions for these properties are allocated to the Company and its joint venture partners in accordance with the respective partnership agreements. Refer to the Company’s Form 10-K for the year ended December 31, 2012 for details of each unconsolidated entity.
	These entities are not consolidated by the Company and the equity method of accounting is used to account for these investments. Under the equity method of accounting, the net equity investment of the Company and the Company’s share of net income or loss from the unconsolidated entity are reflected in the consolidated balance sheets and the consolidated statements of operations and other comprehensive income.
	Entity	Description	Ownership %	Investment at				Investment at
				30-Sep-13				December 31, 2012
	Cobalt Industrial REIT II	Industrial portfolio	36%	$	85,485			$	102,599
	D.R. Stephens Institutional Fund, LLC	Industrial and R&D assets	90%	34,541				34,541
	Brixmor/IA JV, LLC	Retail Shopping Centers	(a)	80,843				90,315
	IAGM Retail Fund I, LLC (b)	Retail Shopping Centers	55%	92,010				—
	Other Unconsolidated Entities	Various real estate investments	Various	13,563				26,344
				$	306,442			$	253,799
	(a)	The Company has a preferred membership interest and is entitled to a 11% preferred dividend in Brixmor/IA JV, LLC.
	(b)	On April 17, 2013, the Company entered into a joint venture, IAGM Retail Fund I, LLC ("IAGM"), with PGGM Private Real Estate Fund ("PGGM"), for the purpose of acquiring, owning, managing, supervising, and disposing of properties and sharing in the profits and losses from those properties and its activities. The Company initially contributed 13 multi-tenant retail properties totaling 2,109,324 square feet from its portfolio to IAGM for an equity interest of $96,788, and PGGM contributed $79,190. The gross disposition price was $409,280. On July 1, 2013, the Company contributed another multi-tenant retail property, South Frisco Village, for a gross disposition price of $34,350. The Company treated these dispositions as a partial sale, and the activity related to the disposed properties remains in continuing operations on the consolidated statements of operations and other comprehensive income, since the Company has an equity interest in IAGM, and therefore the Company has continued ownership interest in the properties. The Company recognized a gain on sale of $12,783 for the nine months ended September 30, 2013, which is included in other income on the consolidated statements of operations and other comprehensive income, and recorded an equity investment basis adjustment of $15,625. The Company amortizes the basis adjustment over 30 years consistent with the depreciation of the investee's underlying assets.
	The Company is the managing member of IAGM, responsible for the day-to-day activities and earns fees for venture management, property management, leasing and other services provided to IAGM. The Company analyzed the joint venture agreement and determined that it was not a variable interest entity. The Company also considered PGGM's participating rights under the joint venture agreement and determined that PGGM has the ability to participate in major decisions, which equates to shared decision making ability. As such, the Company does not control IAGM. Therefore, this joint venture is unconsolidated and accounted for using the equity method of accounting.
	For the nine months ended September 30, 2013 and 2012, the Company recorded impairment of its unconsolidated entities of $6,532 and $4,200, respectively.
	Combined Financial Information
	The following table presents the combined condensed financial information for the Company’s investment in unconsolidated entities.
		September 30, 2013				December 31, 2012
	Balance Sheets:
	Assets:
	Real estate assets, net of accumulated depreciation	$	1,696,988			$	1,437,268
	Other assets	306,157				222,096
	Total Assets	2,003,145				1,659,364
	Liabilities and Equity:
	Mortgage debt	1,245,144				1,062,086
	Other liabilities	94,941				89,573
	Equity	663,060				507,705
	Total Liabilities and Equity	2,003,145				1,659,364
	Company’s share of equity	$	321,573			$	252,994
	Net excess of cost of investments over the net book value of underlying net assets (net of accumulated depreciation of $486 and $1,714, respectively)	(15,131		)		805
	Carrying value of investments in unconsolidated entities	$	306,442			$	253,799
		Nine Months Ended
		September 30, 2013				September 30, 2012
	Statements of Operations:
	Revenues	$	168,863			$	156,308
	Expenses:
	Interest expense and loan cost amortization	38,344				44,938
	Depreciation and amortization	51,438				60,048
	Operating expenses, ground rent and general and administrative expenses	55,121				52,157
	Impairment	—				553
	Total expenses	144,903				157,696
	Net gain (loss) before gain on sale of real estate	$	23,960			$	(1,388	)
	Gain on sale of real estate	—				9,270
	Net income	23,960				7,882
	Company’s share of:
	Net income, net of excess basis depreciation of $400 and $257	$	11,044			$	2,807
	The unconsolidated entities had total third party debt of $1,245,144 at September 30, 2013 that matures as follows:
	2013	$	—
	2014	74,536
	2015	68,379
	2016	—
2017	161,580
Thereafter	940,649
	$	1,245,144
The debt maturities of the unconsolidated entities are not recourse to the Company, and the Company has no obligation to fund such debt maturities. It is anticipated that the ventures will be able to repay or refinance all of their debt on a timely basis.

Transactions_with_Related_Part

Transactions with Related Parties	9 Months Ended
	Sep. 30, 2013
Related Party Transaction, Due from (to) Related Party [Abstract]	'
Transactions with Related Parties	'
	Transactions with Related Parties
	The following table summarizes the Company’s related party transactions for the nine months ended September 30, 2013 and 2012.
		For the nine months ended				Unpaid amounts as of
		September 30, 2013		September 30, 2012		September 30, 2013		December 31, 2012
	General and administrative:
	General and administrative reimbursement (a)	$	10,943	$	8,299	$	3,192	$	4,017
	Loan servicing (b)	—		147		—		—
	Investment advisor fee (c)	1,309		1,323		118		150
	Total general and administrative to related parties	$	12,252	$	9,769	$	3,310	$	4,167
	Property management fees (d)	17,149		20,858		478		75
	Business management fee (e)	29,127		29,982		9,648		9,910
	Loan placement fees (f)	444		1,118		—		—
	(a)	The Inland American Business Manager & Advisor, Inc. (the "Business Manager") and its related parties are entitled to reimbursement for general and administrative expenses of the Business Manager and its related parties relating to the Company’s administration. Unpaid amounts as of September 30, 2013 and December 31, 2012 are included in accounts payable and accrued expenses on the consolidated balance sheets.
	(b)	A related party of the Business Manager provided loan servicing to the Company.
	(c)	The Company pays a related party of the Business Manager to purchase and monitor its investment in marketable securities.
	(d)	For the nine months ended September 30, 2013, the property managers, entities owned principally by individuals who were related parties of the Business Manager, are entitled to receive property management fees by property type, as follows: (i) for any bank branch facility (office or retail), 2.50% of the gross income generated by the property; (ii) for any multi-tenant industrial property, 4.00% of the gross income generated by the property; (iii) for any multi-family property, 3.75% of the gross income generated by the property; (iv) for any multi-tenant office property, 3.75% of the gross income generated by the property; (v) for any multi-tenant retail property, 4.50% of the gross income generated by the property; (vi) for any single-tenant industrial property, 2.25% of the gross income generated by the property; (vii) for any single-tenant office property, 2.90% of the gross income generated by the property; and (viii) for any single-tenant retail property, 2.90% of the gross income generated by the property.
	In addition to these fees, the property managers receive reimbursements of payroll costs for property level employees. The Company reimbursed or will reimburse the property managers and other affiliates $9,545 and $10,905 for the nine months ended September 30, 2013 and 2012, respectively.
	(e)	After the Company’s stockholders have received a non-cumulative, non-compounded return of 5.00% per annum on their “invested capital,” the Company pays its Business Manager an annual business management fee of up to 1.00% of the “average invested assets,” payable quarterly in an amount equal to 0.25% of the average invested assets as of the last day of the immediately preceding quarter. For the nine months ended September 30, 2013 and 2012, average invested assets were $10,899,071 and $11,506,392. The Company incurred a business management fee of $29,127 and $29,982, which is equal to 0.28%, and 0.26% of average invested assets for the nine months ended September 30, 2013 and 2012, respectively. Pursuant to the letter agreement dated May 4, 2012, the business management fee shall be reduced in each particular quarter for investigation costs exclusive of legal fees incurred in conjunction with the SEC matter. During the nine months ended September 30, 2013, the Company incurred $873 of investigation costs, resulting in a business management fee expense of $29,127 for the nine months ended September 30, 2013. In addition, effective July 30, 2013, the Company extended the agreement with the Business Manager through July 30, 2014 and provides that the Company may terminate the Business Manager agreement without cause or penalty upon 30 days’ written notice to the Business Manager. Prior to executing the amendment, the Company could terminate the Business Manager agreement without cause or penalty upon 60 days’ written notice. In all other respects, the terms and conditions of the Business Manager agreement remain unchanged.
	(f)	The Company pays a related party of the Business Manager 0.2% of the principal amount of each loan placed for the Company. Such costs are capitalized as loan fees and amortized over the respective loan term.
	As of September 30, 2013 and December 31, 2012, the Company had deposited $375 and $375, respectively, in Inland Bank and Trust, a subsidiary of Inland Bancorp, Inc., an affiliate of The Inland Real Estate Group, Inc.
	The Company is party to an agreement with an LLC formed as an insurance association captive (the “Captive”), which is wholly-owned by the Company and three related parties, Inland Real Estate Corporation (“IRC”), Inland Diversified Real Estate Trust, Inc., and Inland Real Estate Income Trust, Inc., and a third party, Retail Properties of America ("RPAI"). The Company paid insurance premiums of $9,158 and $9,205 for the nine months ended September 30, 2013 and 2012, respectively.
	In addition, the Company held 899,820 shares of IRC valued at $9,205 as of September 30, 2013. As of December 31, 2012, the Company held 899,820 shares of IRC valued at $7,540.

Investment_in_Marketable_Secur

Investment in Marketable Securities	9 Months Ended
	Sep. 30, 2013
Investments, All Other Investments [Abstract]	'
Investment in Marketable Securities	'
	Investment in Marketable Securities
	Investment in marketable securities of $249,593 and $327,655 at September 30, 2013 and December 31, 2012, respectively, consists of primarily preferred and common stock investments in other REITs and certain real estate related bonds which are classified as available-for-sale securities and recorded at fair value. The cost basis net of impairments of available-for-sale securities was $182,181 and $242,370 as of September 30, 2013 and December 31, 2012, respectively.
	Unrealized holding gains and losses on available-for-sale securities are excluded from earnings and reported as a separate component of comprehensive income until realized. The Company has net accumulated other comprehensive income related to its marketable securities of $67,412 and $85,285, which includes gross unrealized losses of $3,233 and $2,014 related to its marketable securities as of September 30, 2013 and December 31, 2012, respectively.
	The Company’s policy for assessing recoverability of its available-for-sale securities is to record a charge against net earnings when the Company determines that a decline in the fair value of a security drops below the cost basis and believes that decline to be other-than-temporary. Factors in the assessment of other-than-temporary impairment include determining whether (1) the Company has the ability and intent to hold the security until it recovers, and (2) the length of time and degree to which the security’s price has declined. No impairment to available-for-sale securities was recorded for the nine months ended September 30, 2013. During the nine months ended September 30, 2012, the Company recorded impairment of $1,899 for other-than-temporary declines in available-for-sale securities.
	Dividend income is recognized when earned. During the nine months ended September 30, 2013 and 2012, dividend income of $12,813 and $15,074, respectively, was recognized and is included in interest and dividend income on the consolidated statements of operations and other comprehensive income.

Debt

Debt	9 Months Ended
	Sep. 30, 2013
Notes and Loans Payable [Abstract]	'
Debt	'
	Debt
	Mortgages Payable
	Mortgage loans outstanding for as of September 30, 2013 and December 31, 2012 were $4,688,759 and $5,894,443 and had a weighted average interest rate of 5.13% and 5.10% per annum, respectively. Of these mortgage loans outstanding at September 30, 2013, approximately $827,034 related to properties held for sale. Mortgage premium and discount, net, was a discount of $22,128 and $27,439 as of September 30, 2013 and December 31, 2012, respectively. As of September 30, 2013, scheduled maturities for the Company’s outstanding mortgage indebtedness had various due dates through December 2041, as follows:
	Maturity Date		As of		Weighted average
			30-Sep-13		annual interest rate
	2013		$	82,004	6.41%
	2014		476,082		3.76%
	2015		560,691		4.31%
	2016		781,911		5.41%
	2017		1,219,138		5.60%
	Thereafter		1,568,933		5.27%
	The Company is negotiating refinancing debt maturing in 2013 with various lenders at terms that will allow us to pay comparable interest rates. It is anticipated that the Company will be able to repay, refinance or extend the debt maturing in 2013, and the Company believes it has adequate sources of funds to meet short term cash needs related to these refinancings. Of the total outstanding debt for all years, approximately $300,702 is recourse to the Company.
	Some of the mortgage loans require compliance with certain covenants, such as debt coverage service ratios, investment restrictions and distribution limitations. As of September 30, 2013, the Company was in compliance with all mortgage loan requirements except five loans with a carrying value of $86,451; none of which are cross collateralized with any other mortgage loans or recourse to the Company. The stated maturities of the mortgage loans in default are reflected as follows: $12,100 in 2011, $11,000 in 2012, $20,115 in 2016, and $43,236 in 2017. The 2011 and 2012 maturities are reflected as 2013 maturities in the table above.
	Line of Credit
	On May 8, 2013, the Company entered into a credit agreement with KeyBank National Association, JP Morgan Chase Bank National Association and other financial institutions to provide for a senior unsecured credit facility in the aggregate amount of $275,000. The credit facility consists of a $200,000 senior unsecured revolving line of credit and a $75,000 unsecured term loan. As of September 30, 2013, the Company has an accordion feature to increase available borrowings up to $600,000 in certain circumstances with lenders' consent. The senior unsecured revolving line of credit matures on May 7, 2016 and the unsecured term loan matures on May 7, 2017. The Company has a one year extension option on the revolver which it may exercise as long as there is no existing default, it is in compliance with all covenants, a 60-day notice has been provided and it pays an extension fee equal to 0.20% of the commitment amount being extended.
	As of September 30, 2013, the terms of the credit agreement stipulate:
	•	monthly interest-only payments at a rate of LIBOR plus a margin ranging from 1.60% to 2.45% on the outstanding balance of the revolver depending on leverage levels, and at a rate of LIBOR plus a margin ranging from 1.50% to 2.45% on the outstanding balance of the term loan depending on leverage levels;
	•	quarterly unused fees on the revolver ranging from 0.25% to 0.35%, depending on the undrawn amount;
	•	the requirement for a pool of unencumbered assets to support the facility, subject to certain covenants and minimum requirements related to the value, debt service coverage, and number of properties included in the collateral pool;
	This full recourse credit agreement requires compliance with certain covenants including: a minimum net worth requirement, restrictions on indebtedness, a distribution limitation and investment restrictions. It also contains customary default provisions including the failure to timely pay debt service payable thereunder, the failure to comply with the Company's financial and operating covenants and the failure to pay when amounts outstanding under the credit agreement become due. In the event the lenders declare a default, as defined in the credit agreement, this could result in an acceleration of all outstanding borrowings on the credit facility. As of September 30, 2013, management believes the Company was in compliance with all of the covenants and default provisions under the credit agreement. As of September 30, 2013, the interest rates of the revolving line of credit and unsecured term loan were 2.10% and 2.00%, respectively. Upon closing the credit agreement, the Company borrowed the full amount of the term loan which remains outstanding as of September 30, 2013. As of September 30, 2013, the Company had $200,000 available under the revolving line of credit.
	Margins payable
	The Company has purchased a portion of its securities through margin accounts. As of September 30, 2013 and December 31, 2012, the Company has recorded a payable of $73,788 and $139,142, respectively, for securities purchased on margin. At September 30, 2013 and December 31, 2012, the average interest rate on margin loans was 0.532% and 0.560%. Interest expense in the amount of $404 and $641 was recognized in interest expense on the consolidated statements of operations and other comprehensive income for nine months ended September 30, 2013 and 2012, respectively.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	In accordance with ASC 820, Fair Value Measurement and Disclosures, the Company defines fair value based on the price that would be received upon sale of an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company uses a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value. The fair value hierarchy consists of three broad levels, which are described below:
	•	Level 1 - Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.
	•	Level 2 - Observable inputs, other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
	•	Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.
	The Company has estimated the fair value of its financial and non-financial instruments using available market information and valuation methodologies the Company believes to be appropriate for these purposes. Considerable judgment and a high degree of subjectivity are involved in developing these estimates and, accordingly, they are not necessarily indicative of amounts that would be realized upon disposition.
	Recurring Measurements
	For assets and liabilities measured at fair value on a recurring basis, quantitative disclosure of the fair value for each major category of assets and liabilities is presented below:
			Fair Value Measurements at September 30, 2013
			Using Quoted Prices in Active Markets for Identical Assets				Using Significant				Using Significant
							Other Observable Inputs				Other Unobservable Inputs
	Description		(Level 1)				(Level 2)				(Level 3)
	Available-for-sale real estate equity securities		$	232,132			$	—			$	—
	Real estate related bonds		—				17,461				—
	Total assets		$	232,132			$	17,461			$	—
	Derivative interest rate instruments		$	—			$	(309	)		$	—
	Total liabilities		$	—			$	(309	)		$	—
			Fair Value Measurements at December 31, 2012
			Using Quoted Prices in Active Markets for Identical Assets				Using Significant				Using Significant
							Other Observable Inputs				Other Unobservable Inputs
	Description		(Level 1)				(Level 2)				(Level 3)
	Available-for-sale real estate equity securities		$	304,811			$	—			$	—
	Real estate related bonds		—				22,844				—
	Total assets		$	304,811			$	22,844			$	—
	Derivative interest rate instruments		$	—			$	(871	)		$	—
	Total liabilities		$	—			$	(871	)		$	—
	Level 1
	At September 30, 2013 and December 31, 2012, the fair value of the available for sale real estate equity securities have been valued based upon quoted market prices for the same or similar issues when current quoted market prices are available. Unrealized gains or losses on investment are reflected in unrealized gain (loss) on investment securities in other comprehensive income on the consolidated statements of operations and other comprehensive income.
	Level 2
	To calculate the fair value of the real estate related bonds and the derivative interest rate instruments, the Company primarily uses quoted prices for similar securities and contracts. For the real estate related bonds, the Company reviews price histories for similar market transactions. For the derivative interest rate instruments, the Company uses inputs based on data that is observed
	in the forward yield curves which are widely observable in the marketplace. The Company also incorporates credit valuation
	adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in
	the fair value measurements which utilizes Level 3 inputs, such as estimates of current credit spreads. However, as of September 30, 2013 and December 31, 2012, the Company has assessed that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.
	Level 3
	At September 30, 2013 and December 31, 2012, the Company had no level three recurring fair value measurements.
	Non-Recurring Measurements
	The following table summarizes activity for the Company’s assets measured at fair value on a non-recurring basis. The Company recognized certain impairment charges to reflect the investments at their fair values for the nine months ended September 30, 2013 and 2012. The asset groups that were reflected at fair value through this evaluation are:
			For the nine months ended							For the nine months ended
			September 30, 2013							September 30, 2012
			Fair Value Measurements Using Significant Unobservable Inputs (Level 3)				Total Impairment Losses			Fair Value Measurements Using Significant Unobservable Inputs (Level 3)			Total Impairment Losses
	Investment properties		$	235,443			228,370			104,356			53,842
	Investment in unconsolidated entities		36,335				6,532			16,914			4,200
	Total		$	271,778			234,902			121,270			58,042
	During the nine months ended September 30, 2013, the Company identified certain properties which may have a reduction in the expected holding period and reviewed the probability of these assets' dispositions. The Company’s estimated fair value relating to the investment properties’ impairment analysis was based on a comparison of letters of intent or purchase contracts, broker opinions of value and ten-year discounted cash flow models, which includes contractual inflows and outflows over a specific holding period. The cash flows consist of unobservable inputs such as contractual revenues and forecasted revenues and expenses. These unobservable inputs are based on market conditions and the Company’s expected growth rates. During the nine months ended September 30, 2013, capitalization rates ranging from 6.80% to 10.50% and discount rates ranging from 7.50% to 12.00% were utilized in the model and are based upon observable rates that the Company believes to be within a reasonable range of current market rates.
	The Company also identified one property, a large single tenant office property, in which it was exploring a potential disposition. After the Company began exploring a potential sale of the property, it became aware of circumstances in which the tenant would reduce the space they occupied. Although the lease does not expire until 2016, the Company analyzed various leasing and sale scenarios for the single tenant property. The Company’s estimated fair value relating to the investment properties’ impairment analysis was based on ten-year discounted cash flow models, which includes contractual inflows and outflows over a specific holding period. The cash flows consist of observable inputs such as contractual revenues and unobservable inputs such as forecasted revenues and expenses. These unobservable inputs are based on market conditions and the Company’s expected growth rates. The capitalization rates ranging from 6.25% to 7.75% and discount rates ranging from 7.00% to 8.50% were utilized in this model and are based upon observable rates that the Company believes to be within a reasonable range of current market rates. Based on the probabilities assigned to such scenarios, it was determined the property was impaired and therefore, written down to fair value. An impairment charge of $147,480 was recorded for this asset.
	During the nine months ended September 30, 2012, the Company identified certain properties which may have a reduction in the expected holding period and reviewed the probability of these assets' dispositions. Capitalization rates ranging from 7.25% to 9.00% and discount rates ranging from 7.50% to 10.00% were utilized in the model and are based upon observable rates that the Company believes to be within a reasonable range of current market rates.
	For the nine months ended September 30, 2013 and 2012, the Company recorded an impairment of investment properties of $228,370 and $53,842, respectively. Certain properties have been disposed and were impaired prior to disposition and the related impairment charge of $1,116 and $13,046 are included in discontinued operations for the nine months ended September 30, 2013 and 2012, respectively.
	During the nine months ended September 30, 2013, the Company identified certain investments in unconsolidated entities that may be other than temporarily impaired. The Company's estimated fair values relating to the investment in unconsolidated entities' impairment analysis was based on a letter of intent and by analyzing the entities' underlying assets and each joint venture partner's respective waterfall distribution. This resulted in an impairment charge of $6,532 for the nine months ended September 30, 2013.
	During the nine months ended September 30, 2012, the Company identified certain investments in unconsolidated entities that may be other than temporarily impaired. The Company’s estimated fair value relating to the investment in unconsolidated entity's impairment analysis was in part based on the expected future cash distributions and on the fair value of the underlying assets of the investment using a discounted cash flow model, including discount rates and capitalization rates on the expected future cash flows of the properties. The cash flows consist of unobservable inputs such as contractual revenues and forecasted revenues and expenses. These unobservable inputs are based on market conditions and expected growth rates. Capitalization rates ranging from 8.00% to 11.25% and discount rates ranging from 10.00% to 11.00% were utilized in the model and are based upon observable rates that the Company believes to be within a reasonable range of current market rates. These factors resulted in an impairment charge of $4,200 for the nine months ended September 30, 2012.
	Financial Instruments not Measured at Fair Value
	The table below represents the fair value of financial instruments presented at carrying values in our consolidated financial statements as of September 30, 2013 and December 31, 2012.
		September 30, 2013							December 31, 2012
		Carrying Value			Estimated				Carrying Value			Estimated
					Fair Value							Fair Value
	Mortgage and notes payable	$	4,688,759		$	4,708,484			$	5,894,443		$	5,790,201
	Line of credit	$	75,000		$	75,000			$	—		$	—
	Margins payable	$	73,788		$	73,788			$	139,142		$	139,142
	The Company estimates the fair value of its mortgage and notes payable instruments using a weighted average effective interest rate of 5.13% per annum. The assumptions reflect the terms currently available on similar borrowing terms to borrowers with credit profiles similar to the Company's. The Company has determined that its debt instrument valuations are classified in Level 2 of the fair value hierarchy.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The Company has elected and has operated so as to qualify to be taxed as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended, commencing with the tax year ended December 31, 2005. So long as it qualifies as a REIT, the Company generally will not be subject to federal income tax on taxable income that is distributed to stockholders. A REIT is subject to a number of organizational and operational requirements including a requirement that it currently distribute at least 90% of its REIT taxable income (subject to certain adjustments) to its stockholders (the “90% Distribution Test”). If the Company fails to qualify as a REIT in any taxable year, without the benefit of certain relief provisions, the Company will be subject to federal and state income tax on its taxable income at regular corporate tax rates. Even if the Company qualifies for taxation as a REIT, the Company may be subject to certain state and local taxes on its income, property or net worth and federal income and excise taxes on its undistributed income. In addition, the Company owns substantially all of the outstanding stock of a subsidiary REIT, MB REIT (Florida), Inc. (“MB REIT”), which the Company consolidates for financial reporting purposes but which is treated as a separate REIT for federal income tax purposes.
	The Company has identified certain distribution and stockholder reimbursement practices that may have caused certain dividends to be treated as preferential dividends, which cannot be used to satisfy the 90% Distribution Requirement. The Company has also identified the ownership of certain assets that may have violated a REIT qualification requirement that prohibits a REIT from owning "securities" of any one issuer in excess of 5% of the REIT's total assets at the end of any calendar quarter (the "5% Securities Test"). In order to provide greater certainty with respect to the Company's qualification as a REIT for federal income tax purposes, management concluded that it was in the best interest of the Company and its stockholders to request closing agreements from the Internal Revenue Service ("IRS") for both the Company and MB REIT with respect to such matters. Accordingly, on October 31, 2012, MB REIT filed a request for a closing agreement with the IRS. Additionally, the Company filed a separate request for a closing agreement on its own behalf on March 7, 2013.
	The Company identified certain aspects of the calculation of certain dividends on MB REIT's preferred stock and also aspects of the operation of certain "set aside" provisions with respect to accrued but unpaid dividends on certain classes of MB REIT's preferred stock that may have caused certain dividends to be treated as preferential dividends. In the case of the Company, management identified certain aspects of the operation of the Company's dividend reinvestment plan and distribution procedures and also certain reimbursements of stockholder expenses that may have caused certain dividends to be treated as preferential dividends. If these practices resulted in preferential dividends, the Company and MB REIT would not have satisfied the 90% Distribution Requirement and thus may not have qualified as REITs, which would result in substantial corporate tax liability for the years in which the Company or MB REIT failed to qualify as a REIT.
	In addition, the Company and MB REIT made certain overnight investments in bank commercial paper. While the Internal Revenue Code does not provide a specific definition of “cash item”, the Company believes that overnight commercial paper should be treated as a “cash item”, which is not treated as a “security” for purposes of the 5% Securities Test. If treated as a "security", the bank commercial paper would appear to have represented more than 5% of the Company's and MB REIT's total assets at the end of certain calendar quarters. In the event this commercial paper is treated as a "security", the Company anticipates that it would be required to pay corporate income tax on the income earned with respect to the portion of the commercial paper that violated the 5% Securities Test.
	The Company can provide no assurance that the IRS will accept the Company's or MB REIT's closing agreement requests. Even if the IRS accepts those requests, the Company and MB REIT may be required to pay a penalty. The Company cannot predict whether such a penalty would be imposed or, if so, the amount of the penalty. The Company believes that (i) the IRS will enter into closing agreements with the Company and MB REIT and (ii) the business manager may be liable, in whole or in part, for any penalty imposed in connection with those closing agreements. As noted above, the Company can provide no assurance that the IRS will enter into closing agreements with the Company and MB REIT or that the Company and MB REIT will not be liable for any penalty imposed in connection with those closing agreements. Management believes based on the currently available information, that such penalty, if any, will not have a material adverse effect on the financial statements of the Company.
	The Company has elected to treat certain of its consolidated subsidiaries, and may in the future elect to treat newly formed subsidiaries, as taxable REIT subsidiaries pursuant to the Internal Revenue Code. Taxable REIT subsidiaries may participate in non-real estate related activities and/or perform non-customary services for tenants and are subject to federal and state income tax at regular corporate tax rates. The Company's hotels are leased to certain of the Company's taxable REIT subsidiaries. Lease revenue from these taxable REIT subsidiaries and its wholly-owned subsidiaries is eliminated in consolidation. For the nine months ended September 30, 2013 and 2012, an income tax expense of $6,955 and $9,774 was included on the consolidated statements of operations and other comprehensive income.

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2013
Segment Reporting Information, Additional Information [Abstract]	'
Segment Reporting	'
	Segment Reporting
	The Company's long-term portfolio strategy is to focus on three asset classes - retail, lodging, and student housing. During the three months ended September 30, 2013, the Company has executed on this strategy by disposing of 80 non-strategic assets as well as classifying 225 non-strategic assets as held for sale.  Therefore, as of September 30, 2013, the Company restated its business segments to: Retail, Lodging, Student Housing, and Non-core.  Net operating income for the three and nine months ended September 30, 2012 have been restated to reflect the change in business segments. All non-strategic assets have been included in the non-core segment. The non-core segment includes office properties, industrial properties, bank branches, retail single tenant properties, and conventional multi-family properties. The Company has concentrated its efforts on driving portfolio growth in the multi-tenant retail, student housing and lodging segments to enhance the long-term value of each segment's portfolio and respective platforms. For its non-core properties, the Company strives to improve individual property performance to increase each property’s value. The Company evaluates segment performance primarily based on net operating income. Net operating income of the segments exclude interest expense, depreciation and amortization, general and administrative expenses, net income of noncontrolling interest and other investment income from corporate investments. The non-segmented assets primarily include the Company’s cash and cash equivalents, investment in marketable securities, construction in progress, investment in unconsolidated entities and notes receivable.
	For the nine months ended September 30, 2013, approximately 9% of the Company’s rental revenue, included in the non-core segment, was generated by two properties leased to AT&T, Inc. As a result of the concentration of revenue generated from these properties, if AT&T were to cease paying rent or fulfilling its other monetary obligations, the Company could have significantly reduced rental revenues or higher expenses until the defaults were cured or the properties were leased to a new tenant or tenants.
	The following table summarizes net property operations income by segment as of and for the three months ended September 30, 2013.
		Total			Retail		Lodging		Student Housing		Non-Core
	Rental income	$	90,795		$	51,858	$	—	$	15,033	$	23,904
	Straight line adjustment	2,031			1,052		—		154		825
	Tenant recovery income	17,129			15,389		—		116		1,624
	Other property income	2,165			1,282		—		768		115
	Lodging income	217,927			—		217,927		—		—
	Total income	330,047			69,581		217,927		16,071		26,468
	Operating expenses	184,714			22,230		149,548		7,869		5,067
	Net operating income	$	145,333		47,351		68,379		8,202		21,401
	Non allocated expenses (a)	(99,957		)
	Other income and expenses (b)	(37,105		)
	Equity in loss of unconsolidated entities (c)	(2,471		)
	Provision for asset impairment (d)	(39,942		)
	Net loss from continuing operations	(34,142		)
	Net income from discontinued operations	271,683
	Less: net income attributable to noncontrolling interests	(8		)
	Net income attributable to Company	$	237,533
	(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
	(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
	(c)	Equity in loss of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
	(d)	Total provision for asset impairment included $11,724 related to three retail properties, $26,175 related to two lodging properties, and $2,043 related to three non-core properties.
	The following table summarizes net property operations income by segment as of and for the three months ended September 30, 2012.
		Total			Retail		Lodging		Student Housing		Non-Core
	Rental income	$	88,655		$	57,558	$	—	$	8,006	$	23,091
	Straight line adjustment	1,235			853		—		33		349
	Tenant recovery income	20,008			18,003		—		100		1,905
	Other property income	1,672			889		—		607		176
	Lodging income	179,662			—		179,662		—		—
	Total income	291,232			77,303		179,662		8,746		25,521
	Operating expenses	158,974			24,860		125,543		3,578		4,993
	Net operating income	$	132,258		52,443		54,119		5,168		20,528
	Non allocated expenses (a)	(99,190		)
	Other income and expenses (b)	(49,070		)
	Equity in loss of unconsolidated entities (c)	(1,265		)
	Provision for asset impairment (d)	(47,015		)
	Net loss from continuing operations	(64,282		)
	Net income from discontinued operations	51,365
	Less: net income attributable to noncontrolling interests	(4,659		)
	Net loss attributable to Company	$	(17,576	)
	(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
	(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
	(c)	Equity in loss of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
	(d)	Total provision for asset impairment included $34,345 related to two retail properties and $12,670 related to four non-core properties.
	The following table summarizes net property operations income by segment as of and for the nine months ended September 30, 2013.
		Total			Retail		Lodging		Student Housing		Non-Core
	Rental income	$	273,712		$	165,013	$	—	$	38,392	$	70,307
	Straight line adjustment	5,941			4,410		—		216		1,315
	Tenant recovery income	54,570			49,575		—		354		4,641
	Other property income	5,662			3,235		—		2,009		418
	Lodging income	622,618			—		622,618		—		—
	Total income	962,503			222,233		622,618		40,971		76,681
	Operating expenses	530,508			70,861		426,445		17,684		15,518
	Net operating income	$	431,995		151,372		196,173		23,287		61,163
	Non allocated expenses (a)	(299,913		)
	Other income and expenses (b)	(107,602		)
	Equity in earnings of unconsolidated entities (c)	5,005
	Provision for asset impairment (d)	(228,370		)
	Net loss from continuing operations	(198,885		)
	Net income from discontinued operations	408,166
Less: net income attributable to noncontrolling interests	(16		)
Net income attributable to Company	$	209,265
Balance Sheet Data:
Real estate assets, net (e)	$	6,840,906		$	2,255,864	$	3,159,322	$	647,403	$	778,317
Non-segmented assets (f)	2,673,683
Total Assets	$	9,514,589
Capital expenditures	$	48,691		$	8,283	$	38,310	$	2,098	$	—
(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
(c)	Equity in earnings of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
(d)	Total provision for asset impairment included $24,540 related to five retail properties, $26,175 related to two lodging properties, $177,655 related to ten non-core properties.
(e)	Real estate assets include intangible assets, net of amortization.
(f)	Construction in progress and assets held for sale are included as non-segmented assets.
The following table summarizes net property operations income by segment as of and for the nine months ended September 30, 2012.
	Total			Retail		Lodging		Student Housing		Non-Core
Rental income	$	261,558		$	171,928	$	—	$	20,593	$	69,037
Straight line adjustment	3,825			3,623		—		104		98
Tenant recovery income	58,186			51,861		—		327		5,998
Other property income	4,745			2,012		—		1,473		1,260
Lodging income	507,932			—		507,932		—		—
Total income	836,246			229,424		507,932		22,497		76,393
Operating expenses	449,297			73,492		351,555		9,484		14,766
Net operating income	$	386,949		155,932		156,377		13,013		61,627
Non allocated expenses (a)	(294,065		)
Other income and expenses (b)	(145,762		)
Equity in loss of unconsolidated entities (c)	(2,949		)
Provision for asset impairment (d)	(53,842		)
Net loss from continuing operations	(109,669		)
Net income from discontinued operations	48,749
Less: net income attributable to noncontrolling interests	(4,851		)
Net loss attributable to Company	$	(65,771	)
(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
(c)	Equity in loss of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
(d)	The total provision for asset impairment relates to $37,017 related to three retail properties, and $16,825 related to five non-core properties.

Earnings_loss_per_Share

Earnings (loss) per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Earnings (loss) per Share	'
	Earnings (loss) per Share
	Basic earnings (loss) per share (“EPS”) are computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period (the “common shares”). Diluted EPS is computed by dividing net income (loss) by the common shares plus potential common shares issuable upon exercising options or other contracts. There are an immaterial amount of potentially dilutive common shares.
	The basic and diluted weighted average number of common shares outstanding was 897,300,455 and 877,280,730 for the nine months ended September 30, 2013 and 2012, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Certain leases and operating agreements within the lodging segment require the Company to reserve funds relating to replacements and renewals of the hotels' furniture, fixtures and equipment. As of September 30, 2013 the Company has funded $69,624 in reserves for future improvements. This amount is included in restricted cash and escrows on the consolidated balance sheet as of September 30, 2013.
	The Company has learned that the SEC is conducting a non-public, formal, fact-finding investigation to determine whether there have been violations of certain provisions of the federal securities laws regarding the business management fees, property management fees, transactions with affiliates, timing and amount of distributions paid to investors, determination of property impairments, and any decision regarding whether the Company might become a self-administered REIT. The Company has not been accused of any wrongdoing by the SEC. The Company also has been informed by the SEC that the existence of this investigation does not mean that the SEC has concluded that anyone has broken the law or that the SEC has a negative opinion of any person, entity, or security. The Company has been cooperating fully with the SEC.
	The Company cannot reasonably estimate the timing of the investigation, nor can the Company predict whether or not the investigation might have a material adverse effect on our business.
	The Business Manager has offered to reduce the business management fee in an aggregate amount necessary to reimburse the Company for any costs, fees, fines or assessments, if any, which may result from the SEC investigation, other than legal fees incurred by the Company, or fees and costs otherwise covered by insurance. The business manager also offered to waive its reimbursement of legal fees or costs that the business manager incurs in connection with the SEC investigation. On May 4, 2012, the Business Manager forwarded a letter to the Company that memorializes this arrangement.
	The Company also has received related demands from stockholders (collectively, the "Stockholder Demands") to conduct investigations regarding claims that the officers, the board of directors, the Business Manager and the affiliates of the Business Manager (the "Inland American Parties") breached their fiduciary duties to the Company in connection with the matters that the Company disclosed are subject to the SEC investigation. The first Stockholder Demand claims that the Inland American Parties (i) falsely reported the value of the Company's common stock until September 2010; (ii) caused the Company to purchase shares of its common stock from stockholders at prices in excess of its value; and (iii) disguised returns of capital paid to stockholders as REIT income resulting in payment of fees to the business manager for which it is not entitled. The three stockholders making that demand contend that legal proceedings should seek recovery of damages in an unspecified amount allegedly sustained by the Company. The second Stockholder Demand made by another stockholder makes similar demands and further alleges that the Inland American Parties (i) caused the Company to engage in transactions that unduly favored related parties; (ii) falsely disclosed the timing and amount of distributions; and (iii) falsely disclosed whether the Company might become a self-administered REIT. The Company also has received a letter from another stockholder that fully adopts and joins in the first Stockholder Demand, but makes no additional demands on the Company to perform investigation or pursue claims.
	Upon receiving the first of the Stockholder Demands, the full board of directors responded by authorizing the independent directors to investigate the claims contained in the first Stockholder Demand, any subsequent stockholder demands, as well as any other matters the independent directors see fit to investigate, including matters related to the SEC investigation. Pursuant to this authority, the independent directors have formed a special litigation committee that is comprised solely of independent directors to review and evaluate the matters referred by the full Board to the independent directors, and to recommend to the full Board any further action as is appropriate. The special litigation committee is investigating these claims with the assistance of independent legal counsel and will make a recommendation to the Board of Directors after the committee has completed its investigation.
	On March 21, 2013, counsel for the stockholders who made the first Stockholder Demand filed a derivative lawsuit in the Circuit Court of Cook County, Illinois, on behalf of the Company. The case has been stayed pending completion of the special litigation committee's investigation.
	On April 26, 2013, two stockholders of the Company filed a putative class action in the United States District Court for the Northern District of Illinois against the Company, and current members and one former member of its board of directors ("the Defendants"). The complaint seeks damages on behalf of plaintiffs and similarly situated individuals who purchased additional shares in the Company pursuant to the Company's Distribution Reinvestment Plan ("DRP") on or after March 30, 2009. Plaintiffs allege that the Defendants breached their fiduciary duties to plaintiffs and to members of the putative class by inflating the yearly estimated share price announced by the Company and by selling shares in the DRP to plaintiffs and members of the putative class at those allegedly inflated prices. The Company believes that the complaint lacks merit and intends to vigorously defend the case.
	The Company has also filed a number of eviction actions against tenants and is involved in a number of tenant bankruptcies. The tenants in some of the eviction cases may file counterclaims against the Company in an attempt to gain leverage against the Company in connection with the eviction. In the opinion of the Company, none of these counterclaims is likely to result in any material losses to the Company.
	The Company is subject, from time to time, to various legal proceedings and claims that arise in the ordinary course of business. While the resolution of these matters cannot be predicted with certainty, management believes, based on currently available information, that the final outcome of such matters will not have a material adverse effect on the financial statements of the Company.

Assets_and_Liabilities_Held_fo

Assets and Liabilities Held for Sale	9 Months Ended
	Sep. 30, 2013
Real Estate Held-for-sale [Abstract]	'
Assets and Liabilities Held for Sale	'
	Held for Sale
	In accordance with GAAP, the Company classifies properties as held for sale when certain criteria are met. On the day that the criteria are met, the Company suspends depreciation on the properties held for sale, including depreciation for tenant improvements and additions, as well as the amortization of acquired in-place leases. The assets and liabilities associated with those investment properties that are held for sale are classified separately on the consolidated balance sheets for the most recent reporting period and recorded at the lesser of the carrying value or fair value less costs to sell. At September 30, 2013, these assets were recorded at their carrying value. The operations for the periods presented are classified on the consolidated statements of operations and other comprehensive income as discontinued operations for all periods presented.
	On August 8, 2013, we entered into a purchase agreement to sell our net lease assets, consisting of 294 retail, office, and industrial properties in an all-cash transaction valued at approximately $2.3 billion. In accordance with the terms of the purchase agreement, the buyer elected to “kick-out” of the transaction 13 properties valued at approximately $180.1 million. Excluding the “kicked out” properties, the transaction is valued at approximately $2.1 billion. As of September 30, 2013, the Company closed on the first tranche of the net lease portfolio consisting of 56 properties for a disposition price of $602,500. The remaining 225 properties are expected to be sold through multiple closings at a gain during the last quarter of 2013 and the first half of 2014. The 225 properties consist of 181 retail and office bank branches, 12 retail single user properties, 8 office properties, and 24 industrial properties. As of September 30, 2013, the 225 properties met the criteria to be classified as held for sale. The operating activity for the properties has been included within discontinued operations. As of September 30, 2012, there were no properties classified as held for sale.
	The major classes of assets and liabilities associated with held for sale properties as of September 30, 2013 are as follows:
		30-Sep-13
	Land	$	276,120
	Building and other improvements	1,112,377
	Total	1,388,497
	Less accumulated depreciation	(241,321		)
	Net investment properties	1,147,176
	Restricted cash & escrows	1,643
	Accounts and rents receivable	35,677
	Intangible assets, net	50,478
	Deferred cost and other assets	8,144
	Total Assets	$	1,243,118
	Debt	$	827,034
	Accounts payable and accrued expenses	1,717
	Intangible liabilities, net	1,146
	Other liabilities	50,095
	Total Liabilities	$	879,992

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	The Company sold United Healthcare Green Bay on October 7, 2013 for $67,160. The property was classified as held for sale as of September 30, 2013.
	The Company purchased five hotels consisting of 997 rooms for $308,750 subsequent to September 30, 2013.
	On October 30, 2013, the Company further amended its agreements with the property managers to change the date by which a termination notice must be delivered in order to prevent the automatic renewal of the agreements. The new termination notice deadline for each agreement is November 30, 2013. Prior to executing the latest amendment, the termination notice deadline for each agreement was October 31, 2013. The amendment also changes the termination date for each of the agreements from February 28, 2014 to March 31, 2014. In all material respects, the terms and conditions of each agreement remained unchanged.
	On November 5, 2013, the Company closed on a $100,000 increase to its revolving line of credit and a $125,000 increase to the term loan. The total revolving line of credit is now $300,000 and the total outstanding term loan is now $200,000. The Company also increased the accordion feature to $800,000. In all material respects, the terms and conditions of the loan agreements remained unchanged.

Organization_Tables

Organization (Tables)	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of Commercial Real Estate Properties	'
	The breakdown by segment of the 268 owned properties at September 30, 2013 is as follows:
	Segment	Property Count	Square Feet / Rooms / Beds
	Retail	121	17,062,813	Square feet
	Lodging	93	18,222	Rooms
	Student Housing	14	8,350	Beds
	Non-core	40	6,754,444	Square feet

Acquired_Properties_Tables

Acquired Properties (Tables)	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Acquisitions	'
	The table below reflects acquisition activity during the nine months ended September 30, 2013.
	Segment	Property	Date	Gross Acquisition Price		Square Feet / Rooms / Beds
	Lodging	Bohemian Hotel Celebration	2/7/13	$	17,500	115	Rooms
	Retail	Westport Village	2/22/13	33,550		169,603	Square Feet
	Lodging	Andaz San Diego Hotel	3/4/13	53,000		159	Rooms
	Student Housing	University House @ TCU	3/7/13	15,850		118	Beds
	Lodging	Residence Inn Denver Center	4/17/13	80,000		228	Rooms
	Retail	South Frisco Village Shopping Center	5/9/13	34,350		227,175	Square Feet
	Student Housing	University House Fayetteville	7/19/13	42,200		654	Beds
	Retail	Walden Park Shopping Center	8/7/13	9,300		33,637	Square Feet
	Student Housing	University House Tempe	8/13/13	103,000		637	Beds
	Lodging	Westin Galleria Houston	8/22/13	120,000		487	Rooms
	Lodging	Westin Oaks Houston	8/22/13	100,000		406	Rooms
	Lodging	Andaz Savannah	9/10/13	43,000		151	Rooms
	Lodging	Andaz Napa Valley	9/20/13	72,000		141	Rooms
	Lodging	Hyatt Regency Santa Clara	9/20/13	93,000		501	Rooms
	Retail	West Creek Shopping Center	9/26/13	15,100		53,338	Square Feet
	Total			$	831,850

Discontinued_Operations_Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Summary of Disposition Activity	'
	The table below reflects sales activity for the nine months ended September 30, 2013.
	Segment	Property	Date	Gross Disposition Price			Sq Ft / Rooms / Units
	Non-core	Citizens Banks - 8 Properties	Q1 2013	$	6,600		23,428	Square Feet
	Lodging	Baymont Inn - Jacksonville	2/6/13	3,500			118	Rooms
	Non-core	Nantucket Apartments	3/13/13	46,100			394	Units
	Lodging	Homewood Suites - Durham	3/21/13	8,300			96	Rooms
	Non-core	SunTrust - 27 Properties	3/22/13	50,800			146,851	Square Feet
	Non-core	IDS Center	4/25/13	253,500			1,462,374	Square Feet
	Non-core	Medical Office Building- 3 Properties	5/2/13	36,400			181,703	Square Feet
	Non-core	Citizens Banks - 5 Properties	Q2 2013	7,900			27,182	Square Feet
	Non-core	SunTrust - 176 Properties	Q2 2013	307,700			883,279	Square Feet
	Non-core	Citizens Bank - 1 property	7/23/13	1,400			4,810	Square Feet
	Lodging	Fairfield Inn-Ann Arbor	8/15/13	8,000			109	Rooms
	Non-core	Kato/Milmont	8/23/13	6,900			125,818	Square Feet
	Non-core	Logan's Roadhouse	9/6/13	2,600			7,995	Square Feet
	Non-core	SunTrust - 7 properties	Q3 2013	13,700			28,579	Square Feet
	Non-core	Triple net portfolio - 56 properties	Q3 2013	602,500			5,435,508	Square Feet
	Non-core	Apartment portfolio - 14 properties	Q3 2013	460,000			4,378	Units
	Total			$	1,815,900
Summary of Components of Discontinued Operations	'
	The components of the Company’s discontinued operations are presented below, which include the results of operations during the three and nine months ended September 30, 2013 and 2012 in which the Company owned such properties.
		Three Months Ended							Nine Months Ended
		September 30, 2013				September 30, 2012			September 30, 2013			September 30, 2012
	Revenues	$	47,654			$	95,541		$	185,579		$	297,425
	Expenses	24,871				57,414			101,413			181,223
	Provision for asset impairment	—				5,083			1,116			13,046
	Operating income from discontinued operations	$	22,783			$	33,044		$	83,050		$	103,156
	Interest expense and other	(15,741		)		(14,487		)	(58,134		)	(83,846		)
	Gain on sale of properties, net	281,216				29,580			400,938			27,610
	Gain (loss) on extinguishment of debt	(16,575		)		1,161			(17,672		)	(238		)
	Gain (loss) on transfer of assets	—				2,067			(16		)	2,067
	Net income from discontinued operations	$	271,683			$	51,365		$	408,166		$	48,749

Investment_in_Partially_Owned_1

Investment in Partially Owned Entities (Tables)	9 Months Ended
	Sep. 30, 2013
Investment in Partially Owned Entities [Abstract]	'
Schedule of Various Consolidated Variable Interest Entities	'
	For the VIEs where the Company is the primary beneficiary, the following are the liabilities of the consolidated VIEs which are not recourse to the Company, and the assets that can be used only to settle those obligations.
		As of September 30, 2013				As of December 31, 2012
	Net investment properties	$	110,658			$	113,476
	Other assets	8,710				8,687
	Total assets	119,368				122,163
	Mortgages, notes and margins payable	(72,265		)		(84,291		)
	Other liabilities	(49,577		)		(49,648		)
	Total liabilities	(121,842		)		(133,939		)
	Net assets	$	(2,474	)		$	(11,776	)
Schedule of Net Equity Investment and Share of Net Income or Loss	'
	Under the equity method of accounting, the net equity investment of the Company and the Company’s share of net income or loss from the unconsolidated entity are reflected in the consolidated balance sheets and the consolidated statements of operations and other comprehensive income.
	Entity	Description	Ownership %	Investment at				Investment at
				30-Sep-13				December 31, 2012
	Cobalt Industrial REIT II	Industrial portfolio	36%	$	85,485			$	102,599
	D.R. Stephens Institutional Fund, LLC	Industrial and R&D assets	90%	34,541				34,541
	Brixmor/IA JV, LLC	Retail Shopping Centers	(a)	80,843				90,315
	IAGM Retail Fund I, LLC (b)	Retail Shopping Centers	55%	92,010				—
	Other Unconsolidated Entities	Various real estate investments	Various	13,563				26,344
				$	306,442			$	253,799
	(a)	The Company has a preferred membership interest and is entitled to a 11% preferred dividend in Brixmor/IA JV, LLC.
	(b)	On April 17, 2013, the Company entered into a joint venture, IAGM Retail Fund I, LLC ("IAGM"), with PGGM Private Real Estate Fund ("PGGM"), for the purpose of acquiring, owning, managing, supervising, and disposing of properties and sharing in the profits and losses from those properties and its activities. The Company initially contributed 13 multi-tenant retail properties totaling 2,109,324 square feet from its portfolio to IAGM for an equity interest of $96,788, and PGGM contributed $79,190. The gross disposition price was $409,280. On July 1, 2013, the Company contributed another multi-tenant retail property, South Frisco Village, for a gross disposition price of $34,350. The Company treated these dispositions as a partial sale, and the activity related to the disposed properties remains in continuing operations on the consolidated statements of operations and other comprehensive income, since the Company has an equity interest in IAGM, and therefore the Company has continued ownership interest in the properties. The Company recognized a gain on sale of $12,783 for the nine months ended September 30, 2013, which is included in other income on the consolidated statements of operations and other comprehensive income, and recorded an equity investment basis adjustment of $15,625. The Company amortizes the basis adjustment over 30 years consistent with the depreciation of the investee's underlying assets.
	The Company is the managing member of IAGM, responsible for the day-to-day activities and earns fees for venture management, property management, leasing and other services provided to IAGM. The Company analyzed the joint venture agreement and determined that it was not a variable interest entity. The Company also considered PGGM's participating rights under the joint venture agreement and determined that PGGM has the ability to participate in major decisions, which equates to shared decision making ability. As such, the Company does not control IAGM. Therefore, this joint venture is unconsolidated and accounted for using the equity method of accounting.
Schedule of Combined Financial Information of Investment in Unconsolidated Entities	'
	The following table presents the combined condensed financial information for the Company’s investment in unconsolidated entities.
		September 30, 2013				December 31, 2012
	Balance Sheets:
	Assets:
	Real estate assets, net of accumulated depreciation	$	1,696,988			$	1,437,268
	Other assets	306,157				222,096
	Total Assets	2,003,145				1,659,364
	Liabilities and Equity:
	Mortgage debt	1,245,144				1,062,086
	Other liabilities	94,941				89,573
	Equity	663,060				507,705
	Total Liabilities and Equity	2,003,145				1,659,364
	Company’s share of equity	$	321,573			$	252,994
	Net excess of cost of investments over the net book value of underlying net assets (net of accumulated depreciation of $486 and $1,714, respectively)	(15,131		)		805
	Carrying value of investments in unconsolidated entities	$	306,442			$	253,799
		Nine Months Ended
		September 30, 2013				September 30, 2012
	Statements of Operations:
	Revenues	$	168,863			$	156,308
	Expenses:
	Interest expense and loan cost amortization	38,344				44,938
	Depreciation and amortization	51,438				60,048
	Operating expenses, ground rent and general and administrative expenses	55,121				52,157
	Impairment	—				553
	Total expenses	144,903				157,696
	Net gain (loss) before gain on sale of real estate	$	23,960			$	(1,388	)
	Gain on sale of real estate	—				9,270
	Net income	23,960				7,882
	Company’s share of:
	Net income, net of excess basis depreciation of $400 and $257	$	11,044			$	2,807
Schedule of Debt Maturities of the Unconsolidated Entities	'
	The unconsolidated entities had total third party debt of $1,245,144 at September 30, 2013 that matures as follows:
	2013	$	—
	2014	74,536
	2015	68,379
	2016	—
	2017	161,580
	Thereafter	940,649
		$	1,245,144

Transactions_with_Related_Part1

Transactions with Related Parties (Tables)	9 Months Ended
	Sep. 30, 2013
Related Party Transaction, Due from (to) Related Party [Abstract]	'
Summary of Related Parties Transactions	'
	The following table summarizes the Company’s related party transactions for the nine months ended September 30, 2013 and 2012.
		For the nine months ended				Unpaid amounts as of
		September 30, 2013		September 30, 2012		September 30, 2013		December 31, 2012
	General and administrative:
	General and administrative reimbursement (a)	$	10,943	$	8,299	$	3,192	$	4,017
	Loan servicing (b)	—		147		—		—
	Investment advisor fee (c)	1,309		1,323		118		150
	Total general and administrative to related parties	$	12,252	$	9,769	$	3,310	$	4,167
	Property management fees (d)	17,149		20,858		478		75
	Business management fee (e)	29,127		29,982		9,648		9,910
	Loan placement fees (f)	444		1,118		—		—
	(a)	The Inland American Business Manager & Advisor, Inc. (the "Business Manager") and its related parties are entitled to reimbursement for general and administrative expenses of the Business Manager and its related parties relating to the Company’s administration. Unpaid amounts as of September 30, 2013 and December 31, 2012 are included in accounts payable and accrued expenses on the consolidated balance sheets.
	(b)	A related party of the Business Manager provided loan servicing to the Company.
	(c)	The Company pays a related party of the Business Manager to purchase and monitor its investment in marketable securities.
	(d)	For the nine months ended September 30, 2013, the property managers, entities owned principally by individuals who were related parties of the Business Manager, are entitled to receive property management fees by property type, as follows: (i) for any bank branch facility (office or retail), 2.50% of the gross income generated by the property; (ii) for any multi-tenant industrial property, 4.00% of the gross income generated by the property; (iii) for any multi-family property, 3.75% of the gross income generated by the property; (iv) for any multi-tenant office property, 3.75% of the gross income generated by the property; (v) for any multi-tenant retail property, 4.50% of the gross income generated by the property; (vi) for any single-tenant industrial property, 2.25% of the gross income generated by the property; (vii) for any single-tenant office property, 2.90% of the gross income generated by the property; and (viii) for any single-tenant retail property, 2.90% of the gross income generated by the property.
	In addition to these fees, the property managers receive reimbursements of payroll costs for property level employees. The Company reimbursed or will reimburse the property managers and other affiliates $9,545 and $10,905 for the nine months ended September 30, 2013 and 2012, respectively.
	(e)	After the Company’s stockholders have received a non-cumulative, non-compounded return of 5.00% per annum on their “invested capital,” the Company pays its Business Manager an annual business management fee of up to 1.00% of the “average invested assets,” payable quarterly in an amount equal to 0.25% of the average invested assets as of the last day of the immediately preceding quarter. For the nine months ended September 30, 2013 and 2012, average invested assets were $10,899,071 and $11,506,392. The Company incurred a business management fee of $29,127 and $29,982, which is equal to 0.28%, and 0.26% of average invested assets for the nine months ended September 30, 2013 and 2012, respectively. Pursuant to the letter agreement dated May 4, 2012, the business management fee shall be reduced in each particular quarter for investigation costs exclusive of legal fees incurred in conjunction with the SEC matter. During the nine months ended September 30, 2013, the Company incurred $873 of investigation costs, resulting in a business management fee expense of $29,127 for the nine months ended September 30, 2013. In addition, effective July 30, 2013, the Company extended the agreement with the Business Manager through July 30, 2014 and provides that the Company may terminate the Business Manager agreement without cause or penalty upon 30 days’ written notice to the Business Manager. Prior to executing the amendment, the Company could terminate the Business Manager agreement without cause or penalty upon 60 days’ written notice. In all other respects, the terms and conditions of the Business Manager agreement remain unchanged.
	(f)	The Company pays a related party of the Business Manager 0.2% of the principal amount of each loan placed for the Company. Such costs are capitalized as loan fees and amortized over the respective loan term.

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Notes and Loans Payable [Abstract]	'
Schedule Of Maturities For Outstanding Mortgage Indebtedness	'
	As of September 30, 2013, scheduled maturities for the Company’s outstanding mortgage indebtedness had various due dates through December 2041, as follows:
	Maturity Date	As of		Weighted average
		30-Sep-13		annual interest rate
	2013	$	82,004	6.41%
	2014	476,082		3.76%
	2015	560,691		4.31%
	2016	781,911		5.41%
	2017	1,219,138		5.60%
	Thereafter	1,568,933		5.27%

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Quantitative Disclosure of The Fair Value For Each Major Category Of Assets And Liabilities	'
	For assets and liabilities measured at fair value on a recurring basis, quantitative disclosure of the fair value for each major category of assets and liabilities is presented below:
			Fair Value Measurements at September 30, 2013
			Using Quoted Prices in Active Markets for Identical Assets				Using Significant				Using Significant
							Other Observable Inputs				Other Unobservable Inputs
	Description		(Level 1)				(Level 2)				(Level 3)
	Available-for-sale real estate equity securities		$	232,132			$	—			$	—
	Real estate related bonds		—				17,461				—
	Total assets		$	232,132			$	17,461			$	—
	Derivative interest rate instruments		$	—			$	(309	)		$	—
	Total liabilities		$	—			$	(309	)		$	—
			Fair Value Measurements at December 31, 2012
			Using Quoted Prices in Active Markets for Identical Assets				Using Significant				Using Significant
							Other Observable Inputs				Other Unobservable Inputs
	Description		(Level 1)				(Level 2)				(Level 3)
	Available-for-sale real estate equity securities		$	304,811			$	—			$	—
	Real estate related bonds		—				22,844				—
	Total assets		$	304,811			$	22,844			$	—
	Derivative interest rate instruments		$	—			$	(871	)		$	—
	Total liabilities		$	—			$	(871	)		$	—
Assets Measured at Fair Value on Non-Recurring Basis	'
	The following table summarizes activity for the Company’s assets measured at fair value on a non-recurring basis. The Company recognized certain impairment charges to reflect the investments at their fair values for the nine months ended September 30, 2013 and 2012. The asset groups that were reflected at fair value through this evaluation are:
			For the nine months ended							For the nine months ended
			September 30, 2013							September 30, 2012
			Fair Value Measurements Using Significant Unobservable Inputs (Level 3)				Total Impairment Losses			Fair Value Measurements Using Significant Unobservable Inputs (Level 3)			Total Impairment Losses
	Investment properties		$	235,443			228,370			104,356			53,842
	Investment in unconsolidated entities		36,335				6,532			16,914			4,200
	Total		$	271,778			234,902			121,270			58,042
Fair Value of Financial Instruments Presented at Carrying Values	'
	The table below represents the fair value of financial instruments presented at carrying values in our consolidated financial statements as of September 30, 2013 and December 31, 2012.
		September 30, 2013							December 31, 2012
		Carrying Value			Estimated				Carrying Value			Estimated
					Fair Value							Fair Value
	Mortgage and notes payable	$	4,688,759		$	4,708,484			$	5,894,443		$	5,790,201
	Line of credit	$	75,000		$	75,000			$	—		$	—
	Margins payable	$	73,788		$	73,788			$	139,142		$	139,142

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting Information, Additional Information [Abstract]	'
Summary of Net Property Operations Income By Segment	'
	The following table summarizes net property operations income by segment as of and for the three months ended September 30, 2013.
		Total			Retail		Lodging		Student Housing		Non-Core
	Rental income	$	90,795		$	51,858	$	—	$	15,033	$	23,904
	Straight line adjustment	2,031			1,052		—		154		825
	Tenant recovery income	17,129			15,389		—		116		1,624
	Other property income	2,165			1,282		—		768		115
	Lodging income	217,927			—		217,927		—		—
	Total income	330,047			69,581		217,927		16,071		26,468
	Operating expenses	184,714			22,230		149,548		7,869		5,067
	Net operating income	$	145,333		47,351		68,379		8,202		21,401
	Non allocated expenses (a)	(99,957		)
	Other income and expenses (b)	(37,105		)
	Equity in loss of unconsolidated entities (c)	(2,471		)
	Provision for asset impairment (d)	(39,942		)
	Net loss from continuing operations	(34,142		)
	Net income from discontinued operations	271,683
	Less: net income attributable to noncontrolling interests	(8		)
	Net income attributable to Company	$	237,533
	(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
	(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
	(c)	Equity in loss of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
	(d)	Total provision for asset impairment included $11,724 related to three retail properties, $26,175 related to two lodging properties, and $2,043 related to three non-core properties.
	The following table summarizes net property operations income by segment as of and for the three months ended September 30, 2012.
		Total			Retail		Lodging		Student Housing		Non-Core
	Rental income	$	88,655		$	57,558	$	—	$	8,006	$	23,091
	Straight line adjustment	1,235			853		—		33		349
	Tenant recovery income	20,008			18,003		—		100		1,905
	Other property income	1,672			889		—		607		176
	Lodging income	179,662			—		179,662		—		—
	Total income	291,232			77,303		179,662		8,746		25,521
	Operating expenses	158,974			24,860		125,543		3,578		4,993
	Net operating income	$	132,258		52,443		54,119		5,168		20,528
	Non allocated expenses (a)	(99,190		)
	Other income and expenses (b)	(49,070		)
	Equity in loss of unconsolidated entities (c)	(1,265		)
	Provision for asset impairment (d)	(47,015		)
	Net loss from continuing operations	(64,282		)
	Net income from discontinued operations	51,365
	Less: net income attributable to noncontrolling interests	(4,659		)
	Net loss attributable to Company	$	(17,576	)
	(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
	(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
	(c)	Equity in loss of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
	(d)	Total provision for asset impairment included $34,345 related to two retail properties and $12,670 related to four non-core properties.
	The following table summarizes net property operations income by segment as of and for the nine months ended September 30, 2013.
		Total			Retail		Lodging		Student Housing		Non-Core
	Rental income	$	273,712		$	165,013	$	—	$	38,392	$	70,307
	Straight line adjustment	5,941			4,410		—		216		1,315
	Tenant recovery income	54,570			49,575		—		354		4,641
	Other property income	5,662			3,235		—		2,009		418
	Lodging income	622,618			—		622,618		—		—
	Total income	962,503			222,233		622,618		40,971		76,681
	Operating expenses	530,508			70,861		426,445		17,684		15,518
	Net operating income	$	431,995		151,372		196,173		23,287		61,163
	Non allocated expenses (a)	(299,913		)
	Other income and expenses (b)	(107,602		)
	Equity in earnings of unconsolidated entities (c)	5,005
	Provision for asset impairment (d)	(228,370		)
	Net loss from continuing operations	(198,885		)
	Net income from discontinued operations	408,166
	Less: net income attributable to noncontrolling interests	(16		)
	Net income attributable to Company	$	209,265
	Balance Sheet Data:
Real estate assets, net (e)	$	6,840,906		$	2,255,864	$	3,159,322	$	647,403	$	778,317
Non-segmented assets (f)	2,673,683
Total Assets	$	9,514,589
Capital expenditures	$	48,691		$	8,283	$	38,310	$	2,098	$	—
(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
(c)	Equity in earnings of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
(d)	Total provision for asset impairment included $24,540 related to five retail properties, $26,175 related to two lodging properties, $177,655 related to ten non-core properties.
(e)	Real estate assets include intangible assets, net of amortization.
(f)	Construction in progress and assets held for sale are included as non-segmented assets.
The following table summarizes net property operations income by segment as of and for the nine months ended September 30, 2012.
	Total			Retail		Lodging		Student Housing		Non-Core
Rental income	$	261,558		$	171,928	$	—	$	20,593	$	69,037
Straight line adjustment	3,825			3,623		—		104		98
Tenant recovery income	58,186			51,861		—		327		5,998
Other property income	4,745			2,012		—		1,473		1,260
Lodging income	507,932			—		507,932		—		—
Total income	836,246			229,424		507,932		22,497		76,393
Operating expenses	449,297			73,492		351,555		9,484		14,766
Net operating income	$	386,949		155,932		156,377		13,013		61,627
Non allocated expenses (a)	(294,065		)
Other income and expenses (b)	(145,762		)
Equity in loss of unconsolidated entities (c)	(2,949		)
Provision for asset impairment (d)	(53,842		)
Net loss from continuing operations	(109,669		)
Net income from discontinued operations	48,749
Less: net income attributable to noncontrolling interests	(4,851		)
Net loss attributable to Company	$	(65,771	)
(a)	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
(b)	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
(c)	Equity in loss of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
(d)	The total provision for asset impairment relates to $37,017 related to three retail properties, and $16,825 related to five non-core properties.

Assets_and_Liabilities_Held_fo1

Assets and Liabilities Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2013
Real Estate Held-for-sale [Abstract]	'
Major Classes of Assets and Liabilities Associated with Held for Sale Properties	'
	The major classes of assets and liabilities associated with held for sale properties as of September 30, 2013 are as follows:
		30-Sep-13
	Land	$	276,120
	Building and other improvements	1,112,377
	Total	1,388,497
	Less accumulated depreciation	(241,321		)
	Net investment properties	1,147,176
	Restricted cash & escrows	1,643
	Accounts and rents receivable	35,677
	Intangible assets, net	50,478
	Deferred cost and other assets	8,144
	Total Assets	$	1,243,118
	Debt	$	827,034
	Accounts payable and accrued expenses	1,717
	Intangible liabilities, net	1,146
	Other liabilities	50,095
	Total Liabilities	$	879,992

Organization_Details

Organization (Details)	Sep. 30, 2013	Sep. 30, 2012
	Properties	Properties
Schedule of commercial real estate properties	'	'
Property Count	268	887
Retail [Member]	'	'
Schedule of commercial real estate properties	'	'
Property Count	121	'
Area of property (in sq ft)	17,062,813	'
Lodging [Member]	'	'
Schedule of commercial real estate properties	'	'
Property Count	93	'
Rooms/Beds	18,222	'
Student Housing [Member]	'	'
Schedule of commercial real estate properties	'	'
Property Count	14	'
Rooms/Beds	8,350	'
Non Core [Member]	'	'
Schedule of commercial real estate properties	'	'
Property Count	40	'
Area of property (in sq ft)	6,754,444	'

Organization_Details_Textual

Organization (Details Textual)	9 Months Ended			12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
	Assets	Property	Property	Property
	Properties	Properties	Properties
Organization (Textual) [Abstract]	'	'	'	'
Number of company owned commercial real estate properties	268	268	887	'
Disposal Group, Including Discontinued Operations, Agreed Number of Properties To Be Sold In Future Periods	225	225	0	'
Properties Classified As Held For Sale	'	'	'	0

Acquired_Properties_Details

Acquired Properties (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Acquisition	'	'
Gross Acquisition Price	$831,850	$457,300
Bohemian Hotel Celebration [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	7-Feb-13	'
Gross Acquisition Price	17,500	'
Rooms/Beds	115	'
Westport Village [Member] | Retail [Member]	'	'
Acquisition	'	'
Date	22-Feb-13	'
Gross Acquisition Price	33,550	'
Area of property (in sq ft)	169,603	'
Andaz San Diego Hotel [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	4-Mar-13	'
Gross Acquisition Price	53,000	'
Rooms/Beds	159	'
University House at Texas Christian University [Member] | Student Housing [Member]	'	'
Acquisition	'	'
Date	7-Mar-13	'
Gross Acquisition Price	15,850	'
Rooms/Beds	118	'
Residence Inn Denver Center [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	17-Apr-13	'
Gross Acquisition Price	80,000	'
Rooms/Beds	228	'
South Frisco Village Shopping Center [Member] | Retail [Member]	'	'
Acquisition	'	'
Date	9-May-13	'
Gross Acquisition Price	34,350	'
Area of property (in sq ft)	227,175	'
University House Fayetteville [Member] | Student Housing [Member]	'	'
Acquisition	'	'
Date	19-Jul-13	'
Gross Acquisition Price	42,200	'
Rooms/Beds	654	'
Walden Park Shopping Center [Member] | Retail [Member]	'	'
Acquisition	'	'
Date	7-Aug-13	'
Gross Acquisition Price	9,300	'
Area of property (in sq ft)	33,637	'
University House Tempe [Member] | Student Housing [Member]	'	'
Acquisition	'	'
Date	13-Aug-13	'
Gross Acquisition Price	103,000	'
Rooms/Beds	637	'
Westin Galleria Houston [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	22-Aug-13	'
Gross Acquisition Price	120,000	'
Rooms/Beds	487	'
Westin Oaks Houston [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	22-Aug-13	'
Gross Acquisition Price	100,000	'
Rooms/Beds	406	'
Andaz Savannah [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	10-Sep-13	'
Gross Acquisition Price	43,000	'
Rooms/Beds	151	'
Andaz Napa Valley [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	20-Sep-13	'
Gross Acquisition Price	72,000	'
Rooms/Beds	141	'
Hyatt Regency Santa Clara [Member] | Lodging [Member]	'	'
Acquisition	'	'
Date	20-Sep-13	'
Gross Acquisition Price	93,000	'
Rooms/Beds	501	'
West Creek Shopping Center [Member] | Retail [Member]	'	'
Acquisition	'	'
Date	26-Sep-13	'
Gross Acquisition Price	$15,100	'
Area of property (in sq ft)	53,338	'

Acquired_Properties_Details_Te

Acquired Properties (Details Textual) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
	Property	Property
Business Combinations [Abstract]	'	'
Number of businesses acquired	15	8
Gross acquisition price	$831,850	$457,300
Revenue not included in related expensed acquisition costs	40,335	37,368
Property net income not included in related expensed acquisition costs	14,294	5,384
Acquisition and transaction costs	$1,581	$1,510

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
	Property	Property	Property
Summary of disposition activity	'	'	'
Gross disposition price	'	$1,815,900	$432,500
Number of disposed assets	80	304	86
Lodging [Member] | Baymont Inn - Jacksonville [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	6-Feb-13	'
Gross disposition price	'	3,500	'
Rooms/Beds	118	118	'
Lodging [Member] | Homewood Suites - Durham [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	21-Mar-13	'
Gross disposition price	'	8,300	'
Rooms/Beds	96	96	'
Lodging [Member] | Fairfield Inn - Ann Arbor [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	15-Aug-13	'
Gross disposition price	'	8,000	'
Rooms/Beds	109	109	'
Non Core [Member] | Citizens Banks - 8 Properties [Member]	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Disposal Date of Activity	'	'Q1 2013	'
Summary of disposition activity	'	'	'
Gross disposition price	'	6,600	'
Area of property (in sq ft)	23,428	23,428	'
Number of disposed assets	'	8	'
Non Core [Member] | Nantucket Apartments [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	13-Mar-13	'
Gross disposition price	'	46,100	'
Rooms/Beds	394	394	'
Non Core [Member] | SunTrust - 27 Properties [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	22-Mar-13	'
Gross disposition price	'	50,800	'
Area of property (in sq ft)	146,851	146,851	'
Number of disposed assets	'	27	'
Non Core [Member] | IDS Center [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	25-Apr-13	'
Gross disposition price	'	253,500	'
Area of property (in sq ft)	1,462,374	1,462,374	'
Non Core [Member] | Medical Office Building - 3 Properties [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	2-May-13	'
Gross disposition price	'	36,400	'
Area of property (in sq ft)	181,703	181,703	'
Number of disposed assets	'	3	'
Non Core [Member] | Citizens Banks - 5 Properties [Member]	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Disposal Date of Activity	'	'Q2 2013	'
Summary of disposition activity	'	'	'
Gross disposition price	'	7,900	'
Area of property (in sq ft)	27,182	27,182	'
Number of disposed assets	'	5	'
Non Core [Member] | SunTrust - 176 Properties [Member]	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Disposal Date of Activity	'	'Q2 2013	'
Summary of disposition activity	'	'	'
Gross disposition price	'	307,700	'
Area of property (in sq ft)	883,279	883,279	'
Number of disposed assets	'	176	'
Non Core [Member] | Citizens Banks - One Property [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	23-Jul-13	'
Gross disposition price	'	1,400	'
Area of property (in sq ft)	4,810	4,810	'
Non Core [Member] | Kato / Milmont [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	23-Aug-13	'
Gross disposition price	'	6,900	'
Area of property (in sq ft)	125,818	125,818	'
Non Core [Member] | Logan's Roadhouse [Member]	'	'	'
Summary of disposition activity	'	'	'
Disposal date	'	6-Sep-13	'
Gross disposition price	'	2,600	'
Area of property (in sq ft)	7,995	7,995	'
Non Core [Member] | SunTrust Seven Properties [Member]	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Disposal Date of Activity	'	'Q3 2013	'
Summary of disposition activity	'	'	'
Gross disposition price	'	13,700	'
Area of property (in sq ft)	28,579	28,579	'
Number of disposed assets	'	7	'
Non Core [Member] | Triple Net Portfolio 56 Properties [Member]	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Disposal Date of Activity	'	'Q3 2013	'
Summary of disposition activity	'	'	'
Gross disposition price	'	602,500	'
Area of property (in sq ft)	5,435,508	5,435,508	'
Number of disposed assets	'	56	'
Non Core [Member] | Multi-Family Portfolio Sale - 14 Properties [Member]	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Disposal Date of Activity	'	'Q3 2013	'
Summary of disposition activity	'	'	'
Gross disposition price	'	$460,000	'
Rooms/Beds	4,378	4,378	'
Number of disposed assets	'	14	'

Discontinued_Operations_Detail1

Discontinued Operations (Details 1) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of components of discontinued operations	'	'	'	'
Revenues	$47,654	$95,541	$185,579	$297,425
Expenses	24,871	57,414	101,413	181,223
Provision for asset impairment	0	5,083	1,116	13,046
Operating income from discontinued operations	22,783	33,044	83,050	103,156
Interest expense and other	-15,741	-14,487	-58,134	-83,846
Gain on sale of properties, net	281,216	29,580	400,938	27,610
Gain (loss) on extinguishment of debt	-16,575	1,161	-17,672	-238
Gain (loss) on transfer of assets	0	2,067	-16	2,067
Net income (loss) from discontinued operations	$271,683	$51,365	$408,166	$48,749

Discontinued_Operations_Detail2

Discontinued Operations (Details Textual) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
	Property	Assets	Property	Property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Disposal Group, Including Discontinued Operations, Agreed Number of Properties To Be Sold In Future Periods	'	225	225	0
Proceeds from Sale of Property, Plant, and Equipment	'	'	$1,782,785	'
Discontinued Operations (Textual) [Abstract]	'	'	'	'
Number of disposed assets	80	304	304	86
Number of surrendered properties	'	1	1	1
Gross disposition price	'	'	$1,815,900	$432,500

Investment_in_Partially_Owned_2

Investment in Partially Owned Entities (Details) (Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member], USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Net investment properties	$110,658	$113,476
Other assets	8,710	8,687
Total assets	119,368	122,163
Mortgages, notes and margins payable	-72,265	-84,291
Other liabilities	-49,577	-49,648
Total liabilities	-121,842	-133,939
Net assets	($2,474)	($11,776)

Investment_in_Partially_Owned_3

Investment in Partially Owned Entities (Details 1) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Apr. 17, 2013	Dec. 31, 2012
Schedule of net equity investment and share of net income or loss	'		'	'
Investment	$306,442		'	$253,799
Cobalt Industrial REIT II [Member]	'		'	'
Schedule of net equity investment and share of net income or loss	'		'	'
Description	'Industrial portfolio		'	'
Ownership %	36.00%		'	'
Investment	85,485		'	102,599
D.R. Stephens Institutional Fund, LLC [Member]	'		'	'
Schedule of net equity investment and share of net income or loss	'		'	'
Description	'Industrial and R&D assets		'	'
Ownership %	90.00%		'	'
Investment	34,541		'	34,541
Brixmor/IA JV, LLC [Member]	'		'	'
Schedule of net equity investment and share of net income or loss	'		'	'
Description	'Retail Shopping Centers		'	'
Investment	80,843	[1]	'	90,315	[1]
IAGM Retail Fund I, LLC [Member]	'		'	'
Schedule of net equity investment and share of net income or loss	'		'	'
Description	'Retail Shopping Centers	[2]	'	'
Ownership %	55.00%	[2]	'	'
Investment	92,010	[2]	96,788	0	[2]
Other Unconsolidated Entities [Member]	'		'	'
Schedule of net equity investment and share of net income or loss	'		'	'
Description	'Various real estate investments		'	'
Investment	$13,563		'	$26,344
[1]	The Company has a preferred membership interest and is entitled to a 11% preferred dividend in Brixmor/IA JV, LLC.
[2]	On April 17, 2013, the Company entered into a joint venture, IAGM Retail Fund I, LLC ("IAGM"), with PGGM Private Real Estate Fund ("PGGM"), for the purpose of acquiring, owning, managing, supervising, and disposing of properties and sharing in the profits and losses from those properties and its activities. The Company initially contributed 13 multi-tenant retail properties totaling 2,109,324 square feet from its portfolio to IAGM for an equity interest of $96,788, and PGGM contributed $79,190. The gross disposition price was $409,280. On July 1, 2013, the Company contributed another multi-tenant retail property, South Frisco Village, for a gross disposition price of $34,350. The Company treated these dispositions as a partial sale, and the activity related to the disposed properties remains in continuing operations on the consolidated statements of operations and other comprehensive income, since the Company has an equity interest in IAGM, and therefore the Company has continued ownership interest in the properties. The Company recognized a gain on sale of $12,783 for the nine months ended September 30, 2013, which is included in other income on the consolidated statements of operations and other comprehensive income, and recorded an equity investment basis adjustment of $15,625. The Company amortizes the basis adjustment over 30 years consistent with the depreciation of the investee's underlying assets.The Company is the managing member of IAGM, responsible for the day-to-day activities and earns fees for venture management, property management, leasing and other services provided to IAGM. The Company analyzed the joint venture agreement and determined that it was not a variable interest entity. The Company also considered PGGM's participating rights under the joint venture agreement and determined that PGGM has the ability to participate in major decisions, which equates to shared decision making ability. As such, the Company does not control IAGM. Therefore, this joint venture is unconsolidated and accounted for using the equity method of accounting.

Investment_in_Partially_Owned_4

Investment in Partially Owned Entities (Details 2) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Liabilities and Equity	'	'	'	'	'
Carrying value of investments in unconsolidated entities	$306,442	'	$306,442	'	$253,799
Company’s share of:	'	'	'	'	'
Net income, net of excess basis depreciation of $400 and $257	3,000	291	11,044	2,807	'
Unconsolidated Entities [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Accumulated Depreciation of Investments over Book Value	1,072	'	1,072	'	1,714
Assets	'	'	'	'	'
Real estate assets, net of accumulated depreciation	1,696,988	'	1,696,988	'	1,437,268
Other assets	306,157	'	306,157	'	222,096
Total Assets	2,003,145	'	2,003,145	'	1,659,364
Liabilities and Equity	'	'	'	'	'
Mortgage debt	1,245,144	'	1,245,144	'	1,062,086
Other liabilities	94,941	'	94,941	'	89,573
Equity	663,060	'	663,060	'	507,705
Total Liabilities and Equity	2,003,145	'	2,003,145	'	1,659,364
Company’s share of equity	321,573	'	321,573	'	252,994
Net excess of cost of investments over the net book value of underlying net assets (net of accumulated depreciation of $1,072 and $1,714, respectively)	-15,131	'	-15,131	'	805
Carrying value of investments in unconsolidated entities	306,442	'	306,442	'	253,799
Statements of Operations:	'	'	'	'	'
Revenues	'	'	168,863	156,308	'
Expenses:	'	'	'	'	'
Interest expense and loan cost amortization	'	'	38,344	44,938	'
Depreciation and amortization	'	'	51,438	60,048	'
Operating expenses, ground rent and general and administrative expenses	'	'	55,121	52,157	'
Impairment	'	'	0	553	'
Total expenses	'	'	144,903	157,696	'
Net gain (loss) before gain on sale of real estate	'	'	23,960	-1,388	'
Gain on sale of real estate	'	'	0	9,270	'
Net income (loss)	'	'	23,960	7,882	'
Company’s share of:	'	'	'	'	'
Depreciation	'	'	$400	$257	'

Investment_in_Partially_Owned_5

Investment in Partially Owned Entities (Details 3) (Unconsolidated Entities [Member], USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Unconsolidated Entities [Member]	'	'
Schedule of Debt Maturities of the Unconsolidated Entities	'	'
2013	$0	'
2014	74,536	'
2015	68,379	'
2016	0	'
2017	161,580	'
Thereafter	940,649	'
Unconsolidated third party debt, total	$1,245,144	$1,062,086

Investment_in_Partially_Owned_6

Investment in Partially Owned Entities (Details Textual) (USD $)

9 Months Ended

0 Months Ended

9 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Jul. 02, 2013

Apr. 17, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Apr. 17, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Brixmor/IA JV, LLC [Member]

Brixmor/IA JV, LLC [Member]

IAGM Retail Fund I, LLC [Member]

IAGM Retail Fund I, LLC [Member]

IAGM Retail Fund I, LLC [Member]

IAGM Retail Fund I, LLC [Member]

Unconsolidated Entities [Member]

Unconsolidated Entities [Member]

Unconsolidated Entities [Member]

PGGM Private Real Estate Fund [Member]

Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

sqft

Brixmor/IA JV, LLC [Member]

IAGM Retail Fund I, LLC [Member]

shopping_center

Property

Investment in Partially Owned Entities (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) on Disposition of Real Estate, Discontinued Operations

'

'

'

'

'

'

$12,783

'

'

'

'

'

'

'

'

'

Equity Investment Basis Adjustment

'

'

'

'

'

'

15,625

'

'

'

'

'

'

'

'

'

Ownership %

'

'

'

'

'

'

'

55.00%

[1]

'

'

'

'

'

67.00%

'

'

Number of shopping centers

'

'

'

'

'

'

'

'

'

'

'

'

'

9

'

'

Percentage ownership interests treated as in various limited liability companies

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

Financing by outsider owners included in other liabilities of subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

47,762

'

'

Preferred dividend

'

'

'

'

'

'

'

'

'

'

'

11.00%

'

'

'

'

Properties contributed to acquired interest in joint venture

'

'

'

'

'

'

13

'

'

'

'

'

'

'

'

'

Area of property (in sq ft)

'

'

'

'

'

'

2,109,324

'

'

'

'

'

'

'

'

'

Investment in unconsolidated entities

306,442

'

253,799

80,843

[2]

90,315

[2]

'

96,788

92,010

[1]

0

[1]

306,442

253,799

'

79,190

'

'

'

Impairment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,532

4,200

Unconsolidated third party debt, total

'

'

'

'

'

'

'

'

'

1,245,144

1,062,086

'

'

'

'

'

Gross disposition price

$1,815,900

$432,500

'

'

'

$34,350

$409,280

'

'

'

'

'

'

'

'

'

[1]

On April 17, 2013, the Company entered into a joint venture, IAGM Retail Fund I, LLC ("IAGM"), with PGGM Private Real Estate Fund ("PGGM"), for the purpose of acquiring, owning, managing, supervising, and disposing of properties and sharing in the profits and losses from those properties and its activities. The Company initially contributed 13 multi-tenant retail properties totaling 2,109,324 square feet from its portfolio to IAGM for an equity interest of $96,788, and PGGM contributed $79,190. The gross disposition price was $409,280. On July 1, 2013, the Company contributed another multi-tenant retail property, South Frisco Village, for a gross disposition price of $34,350. The Company treated these dispositions as a partial sale, and the activity related to the disposed properties remains in continuing operations on the consolidated statements of operations and other comprehensive income, since the Company has an equity interest in IAGM, and therefore the Company has continued ownership interest in the properties. The Company recognized a gain on sale of $12,783 for the nine months ended September 30, 2013, which is included in other income on the consolidated statements of operations and other comprehensive income, and recorded an equity investment basis adjustment of $15,625. The Company amortizes the basis adjustment over 30 years consistent with the depreciation of the investee's underlying assets.The Company is the managing member of IAGM, responsible for the day-to-day activities and earns fees for venture management, property management, leasing and other services provided to IAGM. The Company analyzed the joint venture agreement and determined that it was not a variable interest entity. The Company also considered PGGM's participating rights under the joint venture agreement and determined that PGGM has the ability to participate in major decisions, which equates to shared decision making ability. As such, the Company does not control IAGM. Therefore, this joint venture is unconsolidated and accounted for using the equity method of accounting.

[2]

The Company has a preferred membership interest and is entitled to a 11% preferred dividend in Brixmor/IA JV, LLC.

Transactions_with_Related_Part2

Transactions with Related Parties (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Summary of related parties transactions	'		'		'		'
Business management fee	$9,648		$9,989		$29,127		$29,982
Affiliated Entity [Member]	'		'		'		'
Summary of related parties transactions	'		'		'		'
General and administrative reimbursement paid	10,943	[1]	8,299	[1]	'		'
General and administrative reimbursement unpaid	'		'		3,192	[1]	4,017	[1]
Loan servicing paid	0	[2]	147	[2]	'		'
Loan servicing unpaid	'		'		0	[2]	0	[2]
Investment advisor fee paid	1,309	[3]	1,323	[3]	'		'
Investment advisor fee unpaid	'		'		118	[3]	150	[3]
Total general and administrative to related parties paid	12,252		9,769		'		'
Total general and administrative to related parties unpaid	'		'		3,310		4,167
Property management fees paid	17,149	[4]	20,858	[4]	'		'
Property management fees unpaid	'		'		478	[4]	75	[4]
Business management fee	29,127	[5]	29,982	[5]	'		'
Business manager management fee unpaid	'		'		9,648	[5]	9,910	[5]
Loan placement fees paid	444	[6]	1,118	[6]	'		'
Loan placement fees unpaid	'		'		$0	[6]	$0	[6]
[1]	The Inland American Business Manager & Advisor, Inc. (the "Business Manager") and its related parties are entitled to reimbursement for general and administrative expenses of the Business Manager and its related parties relating to the Company’s administration. Unpaid amounts as of September 30, 2013 and December 31, 2012 are included in accounts payable and accrued expenses on the consolidated balance sheets.
[2]	A related party of the Business Manager provided loan servicing to the Company.
[3]	The Company pays a related party of the Business Manager to purchase and monitor its investment in marketable securities.
[4]	For the nine months ended September 30, 2013, the property managers, entities owned principally by individuals who were related parties of the Business Manager, are entitled to receive property management fees by property type, as follows: (i) for any bank branch facility (office or retail), 2.50% of the gross income generated by the property; (ii) for any multi-tenant industrial property, 4.00% of the gross income generated by the property; (iii) for any multi-family property, 3.75% of the gross income generated by the property; (iv) for any multi-tenant office property, 3.75% of the gross income generated by the property; (v) for any multi-tenant retail property, 4.50% of the gross income generated by the property; (vi) for any single-tenant industrial property, 2.25% of the gross income generated by the property; (vii) for any single-tenant office property, 2.90% of the gross income generated by the property; and (viii) for any single-tenant retail property, 2.90% of the gross income generated by the property. In addition to these fees, the property managers receive reimbursements of payroll costs for property level employees. The Company reimbursed or will reimburse the property managers and other affiliates $9,545 and $10,905 for the nine months ended September 30, 2013 and 2012, respectively.
[5]	After the Company’s stockholders have received a non-cumulative, non-compounded return of 5.00% per annum on their “invested capital,” the Company pays its Business Manager an annual business management fee of up to 1.00% of the “average invested assets,” payable quarterly in an amount equal to 0.25% of the average invested assets as of the last day of the immediately preceding quarter. For the nine months ended September 30, 2013 and 2012, average invested assets were $10,899,071 and $11,506,392. The Company incurred a business management fee of $29,127 and $29,982, which is equal to 0.28%, and 0.26% of average invested assets for the nine months ended September 30, 2013 and 2012, respectively. Pursuant to the letter agreement dated May 4, 2012, the business management fee shall be reduced in each particular quarter for investigation costs exclusive of legal fees incurred in conjunction with the SEC matter. During the nine months ended September 30, 2013, the Company incurred $873 of investigation costs, resulting in a business management fee expense of $29,127 for the nine months ended September 30, 2013. In addition, effective July 30, 2013, the Company extended the agreement with the Business Manager through July 30, 2014 and provides that the Company may terminate the Business Manager agreement without cause or penalty upon 30 days’ written notice to the Business Manager. Prior to executing the amendment, the Company could terminate the Business Manager agreement without cause or penalty upon 60 days’ written notice. In all other respects, the terms and conditions of the Business Manager agreement remain unchanged.
[6]	The Company pays a related party of the Business Manager 0.2% of the principal amount of each loan placed for the Company. Such costs are capitalized as loan fees and amortized over the respective loan term.

Transactions_with_Related_Part3

Transactions with Related Parties (Details Textual) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Thousands, except Share data, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Affiliated Entity [Member]

Affiliated Entity [Member]

Affiliated Entity [Member]

Affiliated Entity [Member]

Inland Bank and Trust [Member]

Inland Bank and Trust [Member]

Inland Real Estate Corporation [Member]

Inland Real Estate Corporation [Member]

Transaction with Related Parties (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Deposited in Inland Bank and Trust

'

'

'

'

'

'

'

'

$375

$375

'

'

Insurance premiums for Captive

'

'

'

'

'

'

9,158

9,205

'

'

'

'

Shares held in related entity

'

'

'

'

'

'

'

'

'

'

899,820

899,820

Equity interest in related entity

'

'

'

'

'

'

'

'

'

'

9,205

7,540

Transaction With Related Parties (Additional Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of Gross Income Generated Property

'

'

'

'

'

'

2.50%

'

'

'

'

'

Percentage Of Gross Income Generated By Multi-Tenant Industrial Property

'

'

'

'

'

'

4.00%

'

'

'

'

'

Percentage Of Gross Income Generated By Multi-Family Property

'

'

'

'

'

'

3.75%

'

'

'

'

'

Percentage Of Gross Income Generated By Multi-Tenant Office Property

'

'

'

'

'

'

3.75%

'

'

'

'

'

Percentage Of Gross Income Generated By Multi-Tenant Retail Property

'

'

'

'

'

'

4.50%

'

'

'

'

'

Percentage Of Gross Income Generated By Single-Tenant Industrial Property

'

'

'

'

'

'

2.25%

'

'

'

'

'

Percentage Of Gross Income Generated By Single-Tenant Office Property

'

'

'

'

'

'

2.90%

'

'

'

'

'

Percentage Of Gross Income Generated By Single-Tenant Retail Property

'

'

'

'

'

'

2.90%

'

'

'

'

'

Reimbursement to property managers

'

'

'

'

'

'

9,545

10,905

'

'

'

'

Non-cumulative, non-compounded return on invested capital

'

'

'

'

'

'

5.00%

'

'

'

'

'

Percentage of annual business management fee

'

'

'

'

'

'

1.00%

'

'

'

'

'

Payment of management fee to Business Manager, percentage of average invested assets

'

'

'

'

'

'

0.25%

'

'

'

'

'

Average invested assets

'

'

'

'

'

'

10,899,071

11,506,392

'

'

'

'

Business management fee

9,648

9,989

29,127

29,982

29,127

[1]

29,982

[1]

'

'

'

'

'

'

Business management fee, percent type

'

'

'

'

'

'

0.28%

0.26%

'

'

'

'

Investigation costs

'

'

'

'

'

'

$873

'

'

'

'

'

Payment to related party

'

'

'

'

'

'

0.20%

'

'

'

'

'

[1]

After the Company’s stockholders have received a non-cumulative, non-compounded return of 5.00% per annum on their “invested capital,” the Company pays its Business Manager an annual business management fee of up to 1.00% of the “average invested assets,” payable quarterly in an amount equal to 0.25% of the average invested assets as of the last day of the immediately preceding quarter. For the nine months ended September 30, 2013 and 2012, average invested assets were $10,899,071 and $11,506,392. The Company incurred a business management fee of $29,127 and $29,982, which is equal to 0.28%, and 0.26% of average invested assets for the nine months ended September 30, 2013 and 2012, respectively. Pursuant to the letter agreement dated May 4, 2012, the business management fee shall be reduced in each particular quarter for investigation costs exclusive of legal fees incurred in conjunction with the SEC matter. During the nine months ended September 30, 2013, the Company incurred $873 of investigation costs, resulting in a business management fee expense of $29,127 for the nine months ended September 30, 2013. In addition, effective July 30, 2013, the Company extended the agreement with the Business Manager through July 30, 2014 and provides that the Company may terminate the Business Manager agreement without cause or penalty upon 30 days’ written notice to the Business Manager. Prior to executing the amendment, the Company could terminate the Business Manager agreement without cause or penalty upon 60 days’ written notice. In all other respects, the terms and conditions of the Business Manager agreement remain unchanged.

Investment_in_Marketable_Secur1

Investment in Marketable Securities (Details) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Investment in Marketable Securities (Textual) [Abstract]	'	'	'
Investment in marketable securities	$249,593	'	$327,655
Impairment on securities included as a component of realized gain (loss)	182,181	'	242,370
Net accumulated other comprehensive income	67,412	'	85,285
Gross unrealized losses	3,233	'	2,014
Impairments on available for sale securities	0	1,899	'
Dividend income recognized	$12,813	$15,074	'

Debt_Details

Debt (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of maturities for outstanding mortgage indebtedness	'	'
Weighted average interest rate	5.13%	5.10%
2013 [Member]	'	'
Schedule of maturities for outstanding mortgage indebtedness	'	'
Weighted average interest rate	6.41%	'
2013	82,004	'
2014 [Member]	'	'
Schedule of maturities for outstanding mortgage indebtedness	'	'
Weighted average interest rate	3.76%	'
2014	476,082	'
2015 [Member]	'	'
Schedule of maturities for outstanding mortgage indebtedness	'	'
Weighted average interest rate	4.31%	'
2015	560,691	'
2016 [Member]	'	'
Schedule of maturities for outstanding mortgage indebtedness	'	'
Weighted average interest rate	5.41%	'
2016	781,911	'
2017 [Member]	'	'
Schedule of maturities for outstanding mortgage indebtedness	'	'
Weighted average interest rate	5.60%	'
2017	1,219,138	'
Thereafter [Member]	'	'
Schedule of maturities for outstanding mortgage indebtedness	'	'
Weighted average interest rate	5.27%	'
Thereafter	1,568,933	'

Debt_Details_Textual

Debt (Details Textual) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

Mar. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Nov. 05, 2013

8-May-13

Sep. 30, 2013

8-May-13

Nov. 05, 2013

8-May-13

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Loans

Subsequent Event [Member]

Subsequent Event [Member]

Term Loan [Member]

Term Loan [Member]

Term Loan [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Revolving Credit Facility [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

Subsequent Event [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

Term Loan [Member]

Revolving Credit Facility [Member]

Term Loan [Member]

Revolving Credit Facility [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

KeyBanc Capital Markets and J.P. Morgan Securities LLC [Member]

Mortgages, Notes and Margins Payable (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage loans outstanding

'

$4,688,759,000

$5,894,443,000

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate for mortgage loans

'

5.13%

5.10%

'

'

'

'

'

'

'

'

'

'

'

Mortgage discount amount

'

22,128,000

27,439,000

'

'

'

'

'

'

'

'

'

'

'

Refinancing debt, outstanding

'

300,702,000

'

'

'

'

'

'

'

'

'

'

'

'

Number of loans

'

5

'

'

'

'

'

'

'

'

'

'

'

'

Carrying amount of mortgage loan

'

86,451,000

'

'

'

'

'

'

'

'

'

'

'

'

Amount stated maturities of mortgage loans year, 2011

'

12,100,000

'

'

'

'

'

'

'

'

'

'

'

'

Amount stated maturities of mortgage loans year, 2012

'

11,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Amount stated maturities of mortgage loans year 2016

'

20,115,000

'

'

'

'

'

'

'

'

'

'

'

'

Amount Stated Maturities of Mortgage Loans year 2017

'

43,236,000

'

'

'

'

'

'

'

'

'

'

'

'

Payable for securities purchased on margin

'

73,788,000

139,142,000

'

'

'

'

'

'

'

'

'

'

'

Margin rate on securities

'

0.53%

0.56%

'

'

'

'

'

'

'

'

'

'

'

Interest expense

641,000

404,000

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing amount

'

'

'

300,000,000

275,000,000

'

'

200,000,000

200,000,000

'

'

'

'

'

Debt instrument, amount

'

'

'

'

'

'

75,000,000

'

'

'

'

'

'

'

Potential borrowing capacity

'

'

'

'

'

'

'

'

600,000,000

'

'

'

'

'

Extension option on line of credit, period

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

Commitment fee

'

'

'

'

'

'

'

'

0.20%

'

'

'

'

'

Basis spread on variable rate

'

'

'

'

'

'

'

'

'

'

1.50%

1.60%

2.45%

2.45%

Commitment fee on unused amount

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

0.35%

Interest rate at period end on revolving line of credit

'

'

'

'

'

'

'

'

'

2.10%

'

'

'

'

Interest rate at period end on unsecured term loan

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

'

Remaining borrowing capacity

'

'

'

'

'

'

'

'

'

200,000,000

'

'

'

'

Liabilities held for sale

'

879,992,000

0

'

'

'

'

'

'

'

'

'

'

'

Disposal Group, Including Discontinued Operation, Debt

'

$827,034,000

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Using Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	'	'
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale real estate equity securities	$232,132	$304,811
Real estate related bonds	0	0
Total assets	232,132	304,811
Derivative interest rate instruments	0	0
Total liabilities	0	0
Using Significant Other Observable Inputs (Level 2) [Member]	'	'
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale real estate equity securities	0	0
Real estate related bonds	17,461	22,844
Total assets	17,461	22,844
Derivative interest rate instruments	-309	-871
Total liabilities	-309	-871
Using Significant Other Unobservable Inputs (Level 3) [Member]	'	'
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale real estate equity securities	0	0
Real estate related bonds	0	0
Total assets	0	0
Derivative interest rate instruments	0	0
Total liabilities	$0	$0

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 1) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Fair value assets measured on non recurring basis unobservable input reconciliation	'		'		'		'
Total impairment losses, investment properties	$39,942	[1]	$47,015	[2]	$228,370	[3]	$53,842	[4]
Fair Value, Measurements, Nonrecurring [Member]	'		'		'		'
Fair value assets measured on non recurring basis unobservable input reconciliation	'		'		'		'
Total impairment losses, investment properties	'		'		228,370		53,842
Total impairment losses, investment in unconsolidated entities	'		'		6,532		4,200
Total impairment losses	'		'		234,902		58,042
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]	'		'		'		'
Fair value assets measured on non recurring basis unobservable input reconciliation	'		'		'		'
Fair value measurements, investment properties	'		'		235,443		104,356
Fair value measurements, investment in unconsolidated entities	'		'		36,335		16,914
Fair value measurements, total	'		'		$271,778		$121,270
[1]	Total provision for asset impairment included $11,724 related to three retail properties, $26,175 related to two lodging properties, and $2,043 related to three non-core properties.
[2]	Total provision for asset impairment included $34,345 related to two retail properties and $12,670 related to four non-core properties.
[3]	Total provision for asset impairment included $24,540 related to five retail properties, $26,175 related to two lodging properties, $177,655 related to ten non-core properties.
[4]	The total provision for asset impairment relates to $37,017 related to three retail properties, and $16,825 related to five non-core properties.

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 2) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'
Carrying value, mortgage and notes payable	$4,688,759	$5,894,443
Carrying value, margins payable	73,788	139,142
Estimated fair value, mortgage and notes payable	4,708,484	5,790,201
Carrying Value Of Line Of Credit	75,000	0
Estimated Fair Value of Line of Credit	75,000	0
Estimated fair value, margins payable	$73,788	$139,142

Fair_Value_Measurements_Detail3

Fair Value Measurements (Details Textual) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

AT&T, Inc. [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discounted cash flow method, term

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

Investment properties, capitalization rates

'

'

'

'

'

'

'

10.50%

'

'

6.80%

'

'

'

'

Investment properties, discount rates

'

'

'

'

'

'

'

12.00%

'

'

7.50%

'

'

'

'

Equity method investments discount rate fair value

'

'

'

'

'

'

11.00%

8.50%

10.00%

10.00%

7.00%

7.50%

'

'

'

Equity method investments capitalization rate fair value

'

'

'

'

'

'

11.25%

7.75%

9.00%

8.00%

6.25%

7.25%

'

'

'

Provision for asset impairment

$39,942

[1]

$47,015

[2]

'

$228,370

[3]

$53,842

[4]

'

'

'

'

'

'

'

$228,370

$53,842

$147,480

Provision for asset impairment for disposed properties

0

5,083

'

1,116

13,046

'

'

'

'

'

'

'

'

'

'

Impairment

'

'

'

'

'

'

'

'

'

'

'

'

6,532

4,200

'

Impairment charge

'

'

$4,200

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate

5.13%

'

'

5.13%

'

5.10%

'

'

'

'

'

'

'

'

'

[1]

Total provision for asset impairment included $11,724 related to three retail properties, $26,175 related to two lodging properties, and $2,043 related to three non-core properties.

[2]

Total provision for asset impairment included $34,345 related to two retail properties and $12,670 related to four non-core properties.

[3]

Total provision for asset impairment included $24,540 related to five retail properties, $26,175 related to two lodging properties, $177,655 related to ten non-core properties.

[4]

The total provision for asset impairment relates to $37,017 related to three retail properties, and $16,825 related to five non-core properties.

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]	'	'	'	'
Percentage of taxable income distributed to shareholders	'	'	90.00%	'
REIT qualification requirement, maximum percentage of total securities attributable to any one issuer	'	'	5.00%	'
Income tax expense	$4,250	$5,147	$6,955	$9,774

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Summary of Net Property Operations Income by Segment	'		'		'		'		'
Rental income	$90,795		$88,655		$273,712		$261,558		'
Straight line adjustment	2,031		1,235		5,941		3,825		'
Tenant recovery income	17,129		20,008		54,570		58,186		'
Other property income	2,165		1,672		5,662		4,745		'
Lodging income	217,927		179,662		622,618		507,932		'
Total income	330,047		291,232		962,503		836,246		'
Operating expenses	184,714		158,974		530,508		449,297		'
Net operating income	145,333		132,258		431,995		386,949		'
Non allocated expenses	-99,957	[1]	-99,190	[1]	-299,913	[1]	-294,065	[1]	'
Other income and expenses	-37,105	[2]	-49,070	[2]	-107,602	[2]	-145,762	[2]	'
Equity in loss of unconsolidated entities	-2,471	[3]	-1,265	[3]	5,005	[4]	-2,949	[3]	'
Provision for asset impairment	-39,942	[5]	-47,015	[6]	-228,370	[7]	-53,842	[8]	'
Net loss from continuing operations	-34,142		-64,282		-198,885		-109,669		'
Net income from discontinued operations	271,683		51,365		408,166		48,749		'
Net income attributable to noncontrolling interests	-8		-4,659		-16		-4,851		'
Net income attributable to Company	237,533		-17,576		209,265		-65,771		'
Real estate assets, net	6,840,906	[9]	'		6,840,906	[9]	'		'
Non-segmented assets	2,673,683	[10]	'		2,673,683	[10]	'		'
Total assets	9,514,589		'		9,514,589		'		10,759,884
Capital Expenditures	'		'		48,691		'		'
Retail [Member]	'		'		'		'		'
Summary of Net Property Operations Income by Segment	'		'		'		'		'
Rental income	51,858		57,558		165,013		171,928		'
Straight line adjustment	1,052		853		4,410		3,623		'
Tenant recovery income	15,389		18,003		49,575		51,861		'
Other property income	1,282		889		3,235		2,012		'
Total income	69,581		77,303		222,233		229,424		'
Operating expenses	22,230		24,860		70,861		73,492		'
Net operating income	47,351		52,443		151,372		155,932		'
Provision for asset impairment	11,724		34,345		24,540		37,017		'
Provision for asset impairment, properties affected	3		2		5		3		'
Real estate assets, net	2,255,864		'		2,255,864		'		'
Capital Expenditures	'		'		8,283		'		'
Lodging [Member]	'		'		'		'		'
Summary of Net Property Operations Income by Segment	'		'		'		'		'
Lodging income	217,927		179,662		622,618		507,932		'
Total income	217,927		179,662		622,618		507,932		'
Operating expenses	149,548		125,543		426,445		351,555		'
Net operating income	68,379		54,119		196,173		156,377		'
Provision for asset impairment	26,175		'		26,175		'		'
Provision for asset impairment, properties affected	2		'		2		'		'
Real estate assets, net	3,159,322		'		3,159,322		'		'
Capital Expenditures	'		'		38,310		'		'
Student Housing [Member]	'		'		'		'		'
Summary of Net Property Operations Income by Segment	'		'		'		'		'
Rental income	15,033		8,006		38,392		20,593		'
Straight line adjustment	154		33		216		104		'
Tenant recovery income	116		100		354		327		'
Other property income	768		607		2,009		1,473		'
Total income	16,071		8,746		40,971		22,497		'
Operating expenses	7,869		3,578		17,684		9,484		'
Net operating income	8,202		5,168		23,287		13,013		'
Real estate assets, net	647,403		'		647,403		'		'
Capital Expenditures	'		'		2,098		'		'
Non Core [Member]	'		'		'		'		'
Summary of Net Property Operations Income by Segment	'		'		'		'		'
Rental income	23,904		23,091		70,307		69,037		'
Straight line adjustment	825		349		1,315		98		'
Tenant recovery income	1,624		1,905		4,641		5,998		'
Other property income	115		176		418		1,260		'
Total income	26,468		25,521		76,681		76,393		'
Operating expenses	5,067		4,993		15,518		14,766		'
Net operating income	21,401		20,528		61,163		61,627		'
Provision for asset impairment	2,043		12,670		177,655		16,825		'
Provision for asset impairment, properties affected	3		4		10		5		'
Real estate assets, net	778,317		'		778,317		'		'
Capital Expenditures	'		'		$0		'		'
[1]	Non allocated expenses consist of general and administrative expenses, business manager management fee and depreciation and amortization.
[2]	Other income and expenses consist of interest and dividend income, interest expense, other income, realized gain (loss) on securities, net, and income tax expense.
[3]	Equity in loss of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
[4]	Equity in earnings of unconsolidated entities includes the gain, (loss) and (impairment) of investment in unconsolidated entities.
[5]	Total provision for asset impairment included $11,724 related to three retail properties, $26,175 related to two lodging properties, and $2,043 related to three non-core properties.
[6]	Total provision for asset impairment included $34,345 related to two retail properties and $12,670 related to four non-core properties.
[7]	Total provision for asset impairment included $24,540 related to five retail properties, $26,175 related to two lodging properties, $177,655 related to ten non-core properties.
[8]	The total provision for asset impairment relates to $37,017 related to three retail properties, and $16,825 related to five non-core properties.
[9]	Real estate assets include intangible assets, net of amortization.
[10]	Construction in progress and assets held for sale are included as non-segmented assets.

Segment_Reporting_Details_Text

Segment Reporting (Details Textual) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
	Property				Assets		Property
Number Of Disposed Assets	80		'		304		86
Disposal Group, Including Discontinued Operations, Agreed Number of Properties To Be Sold In Future Periods	'		'		225		0
Segment Reporting (Textual) [Abstract]	'		'		'		'
Provision for asset impairment	($39,942)	[1]	($47,015)	[2]	-228,370	[3]	($53,842)	[4]
AT&T, Inc. [Member]	'		'		'		'
Segment Reporting (Textual) [Abstract]	'		'		'		'
Percentage of rental revenue	'		'		9.00%		'
Number of leased properties	'		'		2		'
Provision for asset impairment	'		'		-147,480		'
Retail [Member]	'		'		'		'
Segment Reporting (Textual) [Abstract]	'		'		'		'
Provision for asset impairment	11,724		34,345		24,540		37,017
Provision for asset impairment, properties affected	3		2		5		3
Lodging [Member]	'		'		'		'
Segment Reporting (Textual) [Abstract]	'		'		'		'
Provision for asset impairment	26,175		'		26,175		'
Provision for asset impairment, properties affected	2		'		2		'
Non Core [Member]	'		'		'		'
Segment Reporting (Textual) [Abstract]	'		'		'		'
Provision for asset impairment	$2,043		$12,670		177,655		$16,825
Provision for asset impairment, properties affected	3		4		10		5
[1]	Total provision for asset impairment included $11,724 related to three retail properties, $26,175 related to two lodging properties, and $2,043 related to three non-core properties.
[2]	Total provision for asset impairment included $34,345 related to two retail properties and $12,670 related to four non-core properties.
[3]	Total provision for asset impairment included $24,540 related to five retail properties, $26,175 related to two lodging properties, $177,655 related to ten non-core properties.
[4]	The total provision for asset impairment relates to $37,017 related to three retail properties, and $16,825 related to five non-core properties.

Earnings_loss_per_Share_Detail

Earnings (loss) per Share (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings (Loss) Per Share (Textual) [Abstract]	'	'	'	'
Basic and diluted weighted average number of common shares outstanding	902,456,636	881,717,879	897,300,455	877,280,730

Commitments_and_Contingencies_

Commitments and Contingencies (Details Textual) (USD $)	Sep. 30, 2013	Apr. 26, 2013
In Thousands, unless otherwise specified		Putative Class Action [Member]
		stock_holder
Loss Contingencies [Line Items]	'	'
Fund reserves	$69,624	'
Number of plaintiffs in punitive class action	'	2

Assets_and_Liabilities_Held_fo2

Assets and Liabilities Held for Sale (Details) (USD $)	0 Months Ended	9 Months Ended		12 Months Ended
	Aug. 08, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
	Property	Property	Property	Property
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Discontinued Operation, Gross Disposition Price	'	$1,815,900,000	$432,500,000	'
Sales agreement, number of properties to be excluded from sale	13	'	'	'
Value of excluded properties in sales agreement	180,100,000	'	'	'
Sales agreement, number of properties to be sold in future periods	'	225	0	'
Properties Classified As Held For Sale	'	'	'	0
Land	'	276,120,000	'	'
Building and other improvements	'	1,112,377,000	'	'
Total	'	1,388,497,000	'	'
Less accumulated depreciation	'	-241,321,000	'	'
Net investment properties	'	1,147,176,000	'	'
Restricted cash & escrows	'	1,643,000	'	'
Accounts and rents receivable	'	35,677,000	'	'
Intangible assets, net	'	50,478,000	'	'
Deferred cost and other assets	'	8,144,000	'	'
Total Assets	'	1,243,118,000	'	'
Debt	'	827,034,000	'	'
Accounts payable and accrued expenses	'	1,717,000	'	'
Intangible liabilities, net	'	1,146,000	'	'
Other liabilities	'	50,095,000	'	'
Total Liabilities	'	879,992,000	'	'
Purchase Agreement [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Sales agreement, number of properties to be sold	294	'	'	'
Consideration received	2,300,000,000	'	'	'
Purchase Agreement Excluding Kicked Out Properties [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Consideration received	2,100,000,000	'	'	'
Triple Net Portfolio 56 Properties [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Sales agreement, number of properties to be sold	'	56	'	'
Non Core [Member] | Triple Net Portfolio 56 Properties [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Discontinued Operation, Gross Disposition Price	'	$602,500,000	'	'
Scenario, Forecast [Member] | Retail And Office Bank Branches [Member] | Purchase Agreement Excluding Kicked Out Properties [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Sales agreement, number of properties to be sold in future periods	'	181	'	'
Scenario, Forecast [Member] | Retail Single User Property [Member] | Purchase Agreement Excluding Kicked Out Properties [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Sales agreement, number of properties to be sold in future periods	'	12	'	'
Scenario, Forecast [Member] | Office [Member] | Purchase Agreement Excluding Kicked Out Properties [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Sales agreement, number of properties to be sold in future periods	'	8	'	'
Scenario, Forecast [Member] | Industrial Property [Member] | Purchase Agreement Excluding Kicked Out Properties [Member]	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'
Sales agreement, number of properties to be sold in future periods	'	24	'	'

Subsequent_Events_Details_Text

Subsequent Events (Details Textual) (USD $)	9 Months Ended			0 Months Ended			1 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Nov. 05, 2013	Nov. 05, 2013	Nov. 05, 2013	Oct. 07, 2013	Nov. 06, 2013
	Property	Property	Subsequent Event [Member]	Revolving Credit Facility [Member]	Term Loan [Member]	United Healthcare, Green Bay [Member]	Lodging [Member]
				Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
							Assets
							Room
Subsequent Event [Line Items]	'	'	'	'	'	'	'
Number of Units in Real Estate Property	'	'	'	'	'	'	997
Number of Businesses Acquired	15	8	'	'	'	'	5
Subsequent Events (Textual) [Abstract]	'	'	'	'	'	'	'
Discontinued Operation, Gross Disposition Price	$1,815,900,000	$432,500,000	'	'	'	$67,160,000	'
Acquisition Costs, Period Cost	'	'	'	'	'	'	308,750,000
Increase in line of credit	'	'	'	100,000,000	'	'	'
Increase in debt instrument	'	'	'	'	125,000,000	'	'
Maximum borrowing amount	'	'	'	300,000,000	200,000,000	'	'
Line of credit facility, accordion borrowing capacity	'	'	$800,000,000	'	'	'	'