Duke Realty (DRE) 10-Q 1 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 01, 2013
Entity Information [Line Items]	'	'
Entity Registrant Name	'DUKE REALTY CORP	'
Entity Central Index Key	'0000783280	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	325,790,455
Subsidiary of Common Parent [Member]	'	'
Entity Information [Line Items]	'	'
Entity Registrant Name	'DUKE REALTY LIMITED PARTNERSHIP/	'
Entity Central Index Key	'0001003410	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS	'	'
Land and improvements	$1,443,643	$1,284,081
Buildings and tenant improvements	5,720,356	5,398,886
Construction in progress	197,472	234,918
Investments in and advances to unconsolidated companies	328,660	372,256
Undeveloped land	580,052	614,208
Real estate investment property, at cost, total	8,270,183	7,904,349
Accumulated depreciation	-1,384,219	-1,296,396
Net real estate investments	6,885,964	6,607,953
Real estate investments and other assets held-for-sale	57,790	30,937
Cash and cash equivalents	24,112	33,889
Accounts receivable, net of allowance	20,073	22,283
Straight-line rent receivable, net of allowance	124,574	120,303
Receivables on construction contracts, including retentions	28,650	39,754
Deferred financing costs, net of accumulated amortization	38,029	40,083
Deferred leasing and other costs, net of accumulated amortization	498,025	497,827
Escrow deposits and other assets	209,622	167,072
Total Assets	7,886,839	7,560,101
LIABILITIES AND EQUITY	'	'
Secured debt	1,158,456	1,167,953
Unsecured debt	3,066,755	2,993,217
Unsecured line of credit	210,000	285,000
Long-term debt, total	4,435,211	4,446,170
Liabilities related to real estate investments held-for-sale	2,919	807
Construction payables and amounts due subcontractors, including retentions	78,376	84,679
Accrued real estate taxes	104,144	74,565
Accrued interest	36,439	59,215
Other accrued expenses	40,567	104,719
Other liabilities	130,537	121,097
Tenant security deposits and prepaid rents	45,702	42,731
Total Liabilities	4,873,895	4,933,983
Equity	'	'
Preferred shares	447,683	625,638
Common shares	3,253	2,794
Additional paid-in capital	4,601,224	3,953,497
Accumulated other comprehensive income	3,780	2,691
Distributions in excess of net income	-2,076,299	-1,993,206
Total shareholders' equity	2,979,641	2,591,414
Noncontrolling interests	33,303	34,704
Total Equity	3,012,944	2,626,118
Total Liabilities and Equity	7,886,839	7,560,101
Subsidiary of Common Parent [Member]	'	'
ASSETS	'	'
Land and improvements	1,443,643	1,284,081
Buildings and tenant improvements	5,720,356	5,398,886
Construction in progress	197,472	234,918
Investments in and advances to unconsolidated companies	328,660	372,256
Undeveloped land	580,052	614,208
Real estate investment property, at cost, total	8,270,183	7,904,349
Accumulated depreciation	-1,384,219	-1,296,396
Net real estate investments	6,885,964	6,607,953
Real estate investments and other assets held-for-sale	57,790	30,937
Cash and cash equivalents	24,112	33,889
Accounts receivable, net of allowance	20,073	22,283
Straight-line rent receivable, net of allowance	124,574	120,303
Receivables on construction contracts, including retentions	28,650	39,754
Deferred financing costs, net of accumulated amortization	38,029	40,083
Deferred leasing and other costs, net of accumulated amortization	498,025	497,827
Escrow deposits and other assets	209,622	167,072
Total Assets	7,886,839	7,560,101
LIABILITIES AND EQUITY	'	'
Secured debt	1,158,456	1,167,953
Unsecured debt	3,066,755	2,993,217
Unsecured line of credit	210,000	285,000
Long-term debt, total	4,435,211	4,446,170
Liabilities related to real estate investments held-for-sale	2,919	807
Construction payables and amounts due subcontractors, including retentions	78,376	84,679
Accrued real estate taxes	104,144	74,565
Accrued interest	36,439	59,215
Other accrued expenses	40,772	104,886
Other liabilities	130,537	121,097
Tenant security deposits and prepaid rents	45,702	42,731
Total Liabilities	4,874,100	4,934,150
Equity	'	'
Common equity	2,532,146	1,967,091
Preferred equity	447,683	625,638
General Partners' equity	2,979,829	2,592,729
Limited Partners' common equity	19,944	21,383
Accumulated other comprehensive income	3,780	2,691
Total partners' equity	3,003,553	2,616,803
Noncontrolling interests	9,186	9,148
Total Equity	3,012,739	2,625,951
Total Liabilities and Equity	$7,886,839	$7,560,101

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Accounts receivable, allowance	$3,818	$3,374
Straight-line rent receivable, allowance	7,472	6,091
Deferred financing costs, accumulated amortization	52,370	48,218
Deferred leasing and other costs, accumulated amortization	413,227	372,047
Preferred shares, par value	$0.01	$0.01
Preferred shares, shares authorized	5,000,000	5,000,000
Preferred shares, shares issued	1,791,000	2,503,000
Preferred shares, shares outstanding	1,791,000	2,503,000
Common shares, par value	$0.01	$0.01
Common shares, shares authorized	400,000,000	400,000,000
Common shares, shares issued	325,319,000	279,423,000
Common shares, shares outstanding	325,319,000	279,423,000
Subsidiary of Common Parent [Member]	'	'
Accounts receivable, allowance	3,818	3,374
Straight-line rent receivable, allowance	7,472	6,091
Deferred financing costs, accumulated amortization	52,370	48,218
Deferred leasing and other costs, accumulated amortization	$413,227	$372,047
Common equity, General Partner Units issued	325,319,000	279,423,000
Common equity, General Partner Units outstanding	325,319,000	279,423,000
Preferred Units, Issued	1,791,000	2,503,000
Preferred Units, Outstanding	1,791,000	2,503,000
Limited Partner Units issued	4,388,000	4,419,000
Limited Partner Units outstanding	4,388,000	4,419,000

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:	'	'	'	'
Rental and related revenue	$228,883	$199,326	$668,230	$586,570
General contractor and service fee revenue	62,807	93,932	161,004	226,507
Revenues, total	291,690	293,258	829,234	813,077
Expenses:	'	'	'	'
Rental expenses	42,888	37,187	122,753	104,430
Real estate taxes	30,450	27,303	90,729	81,505
General contractor and other services expenses	59,392	87,719	142,925	209,519
Depreciation and amortization	103,594	90,202	296,791	264,435
Costs and expenses, total	236,324	242,411	653,198	659,889
Other operating activities:	'	'	'	'
Equity in earnings (loss) of unconsolidated companies	-27	2,280	50,442	4,056
Gain on sale of properties	0	403	1,108	245
Earnings from sales of land	3,365	0	3,365	0
Undeveloped land carrying costs	-2,108	-2,140	-6,837	-6,606
Asset impairment charges	0	0	-3,777	0
Other operating expenses	-47	-130	-150	-591
General and administrative expenses	-10,373	-8,934	-33,225	-32,367
Other operating transactions, total	-9,190	-8,521	10,926	-35,263
Operating income	46,176	42,326	186,962	117,925
Other income (expenses):	'	'	'	'
Interest and other income, net	145	150	1,219	394
Interest expense	-58,100	-58,812	-176,005	-175,726
Acquisition-related activity	-726	-954	-2,506	-2,563
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	-12,505	-17,290	9,670	-59,970
Income Tax Benefit	4,500	103	4,500	103
Income (loss) from continuing operations	-8,005	-17,187	14,170	-59,867
Discontinued operations:	'	'	'	'
Income (loss) before gain on sales	901	-1,970	70	-4,699
Gain on sale of depreciable properties	8,441	1,608	101,052	11,179
Income (loss) from discontinued operations	9,342	-362	101,122	6,480
Net income (loss)	1,337	-17,549	115,292	-53,387
Dividends on preferred shares/units	-7,356	-11,081	-24,261	-35,356
Adjustments for redemption of preferred shares/units	0	0	-5,932	-5,730
Net (income) loss attributable to noncontrolling interests	-48	400	-1,629	1,371
Net income (loss) attributable to common shareholders/unitholders	-6,067	-28,230	83,470	-93,102
Basic net income (loss) per common share/unit:	'	'	'	'
Continuing operations attributable to common shareholders/unitholders	($0.05)	($0.11)	($0.06)	($0.38)
Discontinued operations attributable to common shareholders/unitholders	$0.03	$0	$0.31	$0.02
Total	($0.02)	($0.11)	$0.25	($0.36)
Diluted net income (loss) per common share/unit:	'	'	'	'
Continuing operations attributable to common shareholders/unitholders	($0.05)	($0.11)	($0.06)	($0.38)
Discontinued operations attributable to common shareholders/unitholders	$0.03	$0	$0.31	$0.02
Total	($0.02)	($0.11)	$0.25	($0.36)
Weighted average number of common shares/units outstanding	324,895	270,289	320,810	265,153
Weighted average number of common shares/units and potential dilutive securities	324,895	270,289	325,380	265,153
Comprehensive income (loss):	'	'	'	'
Net income (loss)	1,337	-17,549	115,292	-53,387
Other comprehensive income:	'	'	'	'
Amortization of interest contracts	-116	457	567	1,371
Other	-54	-47	522	-181
Total other comprehensive income	-170	410	1,089	1,190
Comprehensive income (loss)	1,167	-17,139	116,381	-52,197
Subsidiary of Common Parent [Member]	'	'	'	'
Revenues:	'	'	'	'
Rental and related revenue	228,883	199,326	668,230	586,570
General contractor and service fee revenue	62,807	93,932	161,004	226,507
Revenues, total	291,690	293,258	829,234	813,077
Expenses:	'	'	'	'
Rental expenses	42,888	37,187	122,753	104,430
Real estate taxes	30,450	27,303	90,729	81,505
General contractor and other services expenses	59,392	87,719	142,925	209,519
Depreciation and amortization	103,594	90,202	296,791	264,435
Costs and expenses, total	236,324	242,411	653,198	659,889
Other operating activities:	'	'	'	'
Equity in earnings (loss) of unconsolidated companies	-27	2,280	50,442	4,056
Gain on sale of properties	0	403	1,108	245
Earnings from sales of land	3,365	0	3,365	0
Undeveloped land carrying costs	-2,108	-2,140	-6,837	-6,606
Asset impairment charges	0	0	-3,777	0
Other operating expenses	-47	-130	-150	-591
General and administrative expenses	-10,373	-8,934	-33,225	-32,367
Other operating transactions, total	-9,190	-8,521	10,926	-35,263
Operating income	46,176	42,326	186,962	117,925
Other income (expenses):	'	'	'	'
Interest and other income, net	145	150	1,219	394
Interest expense	-58,100	-58,812	-176,005	-175,726
Acquisition-related activity	-726	-954	-2,506	-2,563
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	-12,505	-17,290	9,670	-59,970
Income Tax Benefit	4,500	103	4,500	103
Income (loss) from continuing operations	-8,005	-17,187	14,170	-59,867
Discontinued operations:	'	'	'	'
Income (loss) before gain on sales	901	-1,970	70	-4,699
Gain on sale of depreciable properties	8,441	1,608	101,052	11,179
Income (loss) from discontinued operations	9,342	-362	101,122	6,480
Net income (loss)	1,337	-17,549	115,292	-53,387
Dividends on preferred shares/units	-7,356	-11,081	-24,261	-35,356
Adjustments for redemption of preferred shares/units	0	0	-5,932	-5,730
Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, NonRedeemable	-140	-59	-487	-365
Net income (loss) attributable to common shareholders/unitholders	-6,159	-28,689	84,612	-94,838
Basic net income (loss) per common share/unit:	'	'	'	'
Continuing operations attributable to common shareholders/unitholders	($0.05)	($0.11)	($0.06)	($0.38)
Discontinued operations attributable to common shareholders/unitholders	$0.03	$0	$0.31	$0.02
Total	($0.02)	($0.11)	$0.25	($0.36)
Diluted net income (loss) per common share/unit:	'	'	'	'
Continuing operations attributable to common shareholders/unitholders	($0.05)	($0.11)	($0.06)	($0.38)
Discontinued operations attributable to common shareholders/unitholders	$0.03	$0	$0.31	$0.02
Total	($0.02)	($0.11)	$0.25	($0.36)
Weighted average number of common shares/units outstanding	329,283	274,800	325,203	270,095
Weighted average number of common shares/units and potential dilutive securities	329,283	274,800	325,380	270,095
Comprehensive income (loss):	'	'	'	'
Net income (loss)	1,337	-17,549	115,292	-53,387
Other comprehensive income:	'	'	'	'
Amortization of interest contracts	-116	457	567	1,371
Other	-54	-47	522	-181
Total other comprehensive income	-170	410	1,089	1,190
Comprehensive income (loss)	$1,167	($17,139)	$116,381	($52,197)

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net income (loss)	$115,292	($53,387)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'
Depreciation of buildings and tenant improvements	214,118	193,479
Amortization of deferred leasing and other costs	89,359	86,859
Amortization of deferred financing costs	9,913	9,878
Straight-line rent adjustment	-12,421	-15,725
Asset impairment charges	3,777	0
Gain on acquisitions	-962	0
Gains on land and depreciated property sales	-105,525	-11,424
Third-party construction contracts, net	27,117	-4,295
Other accrued revenues and expenses, net	11,367	-14,621
Operating distributions received in excess of (less than) equity in earnings from unconsolidated companies	-34,411	10,772
Net cash provided by operating activities	317,624	201,536
Cash flows from investing activities:	'	'
Development of real estate investments	-320,698	-176,340
Acquisition of real estate investments and related intangible assets	-372,934	-321,099
Acquisition of undeveloped land	-30,101	-37,166
Second generation tenant improvements, leasing costs and building improvements	-60,052	-46,682
Other deferred leasing costs	-26,647	-22,727
Other assets	-14,725	674
Proceeds from land and depreciated property sales, net	330,740	112,559
Capital distributions from unconsolidated companies	106,306	4,890
Capital contributions and advances to unconsolidated companies	-38,959	-19,262
Net cash provided by (used for) investing activities	-427,070	-505,153
Cash flows from financing activities:	'	'
Proceeds from issuance of common shares, net	632,531	236,301
Payments for redemption of preferred shares/units	-177,955	-168,272
Proceeds from unsecured debt	500,000	600,000
Payments on unsecured debt	-426,462	-172,374
Proceeds from secured debt financings	1,933	13,305
Payments on secured indebtedness including principal amortization	-112,097	-107,240
Borrowings (payments) on lines of credit, net	-75,000	-20,293
Dividends/Distributions to common shareholders/unitholders	-164,811	-135,083
Dividends/Distributions to preferred shareholders/unitholders	-24,261	-31,630
Contributions from (distributions to) noncontrolling interests, net	-2,692	2,788
Buyout of noncontrolling interests	0	-6,208
Change in book overdrafts	-44,225	0
Deferred financing costs	-7,292	-8,334
Net cash provided by (used for) financing activities	99,669	202,960
Net increase (decrease) in cash and cash equivalents	-9,777	-100,657
Cash and cash equivalents at beginning of period	33,889	213,809
Cash and cash equivalents at end of period	24,112	113,152
Noncash investing and financing activities:	'	'
Assumption of indebtedness and other liabilities in real estate acquisitions	106,555	19,992
Carrying amount of pre-existing ownership interest in acquired property	630	0
Conversion of Limited Partner Units to common shares	338	29,002
Preferred distributions declared but not paid	0	3,726
Subsidiary of Common Parent [Member]	'	'
Cash flows from operating activities:	'	'
Net income (loss)	115,292	-53,387
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'
Depreciation of buildings and tenant improvements	214,118	193,479
Amortization of deferred leasing and other costs	89,359	86,859
Amortization of deferred financing costs	9,913	9,878
Straight-line rent adjustment	-12,421	-15,725
Asset impairment charges	3,777	0
Gain on acquisitions	-962	0
Gains on land and depreciated property sales	-105,525	-11,424
Third-party construction contracts, net	27,117	-4,295
Other accrued revenues and expenses, net	11,405	-14,582
Operating distributions received in excess of (less than) equity in earnings from unconsolidated companies	-34,411	10,772
Net cash provided by operating activities	317,662	201,575
Cash flows from investing activities:	'	'
Development of real estate investments	-320,698	-176,340
Acquisition of real estate investments and related intangible assets	-372,934	-321,099
Acquisition of undeveloped land	-30,101	-37,166
Second generation tenant improvements, leasing costs and building improvements	-60,052	-46,682
Other deferred leasing costs	-26,647	-22,727
Other assets	-14,725	674
Proceeds from land and depreciated property sales, net	330,740	112,559
Capital distributions from unconsolidated companies	106,306	4,890
Capital contributions and advances to unconsolidated companies	-38,959	-19,262
Net cash provided by (used for) investing activities	-427,070	-505,153
Cash flows from financing activities:	'	'
Contributions from the General Partner	632,531	236,301
Payments for redemption of preferred shares/units	-177,955	-168,272
Proceeds from unsecured debt	500,000	600,000
Payments on unsecured debt	-426,462	-172,374
Proceeds from secured debt financings	1,933	13,305
Payments on secured indebtedness including principal amortization	-112,097	-107,240
Borrowings (payments) on lines of credit, net	-75,000	-20,293
Dividends/Distributions to common shareholders/unitholders	-167,092	-137,662
Dividends/Distributions to preferred shareholders/unitholders	-24,261	-31,630
Contributions from (distributions to) noncontrolling interests, net	-449	5,311
Buyout of noncontrolling interests	0	-6,208
Change in book overdrafts	-44,225	0
Deferred financing costs	-7,292	-8,334
Net cash provided by (used for) financing activities	99,631	202,904
Net increase (decrease) in cash and cash equivalents	-9,777	-100,674
Cash and cash equivalents at beginning of period	33,889	213,826
Cash and cash equivalents at end of period	24,112	113,152
Noncash investing and financing activities:	'	'
Assumption of indebtedness and other liabilities in real estate acquisitions	106,555	19,992
Carrying amount of pre-existing ownership interest in acquired property	630	0
Conversion of Limited Partner Units to common shares	338	29,002
Preferred distributions declared but not paid	$0	$3,726

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Equity (USD $)

Total

Preferred Stock [Member]

Common Stock [Member]

Additional Paid-in Capital [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Distributions in Excess of Net Income [Member]

Non-controlling Interest [Member]

Subsidiary of Common Parent [Member]

Subsidiary of Common Parent [Member]

Subsidiary of Common Parent [Member]

Subsidiary of Common Parent [Member]

Subsidiary of Common Parent [Member]

Subsidiary of Common Parent [Member]

Subsidiary of Common Parent [Member]

In Thousands, unless otherwise specified

Preferred Stock [Member]

Common Stock [Member]

Limited Partner [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Non-controlling Interest [Member]

Stockholders' Equity, Total [Member]

Beginning Balance - Partnership at Dec. 31, 2012

'

'

'

'

'

'

'

$2,625,951

$625,638

$1,967,091

$21,383

$2,691

$9,148

$2,616,803

Beginning Balance - General Partner at Dec. 31, 2012

2,626,118

625,638

2,794

3,953,497

2,691

-1,993,206

34,704

'

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income

115,292

'

'

'

'

113,663

1,629

115,292

24,261

89,402

1,142

'

487

114,805

Other comprehensive income

1,089

'

'

'

1,089

'

'

1,089

'

'

'

1,089

'

1,089

Issuance of common shares

632,531

'

451

632,080

'

'

'

'

'

'

'

'

'

'

Capital contribution from the General Partner

'

'

'

'

'

'

'

632,531

'

632,531

'

'

'

632,531

Stock based compensation plan activity

7,633

'

7

9,378

'

-1,752

'

7,633

'

7,633

'

'

'

7,633

Conversion of Limited Partner Units

'

'

1

337

'

'

-338

'

'

338

-338

'

'

'

Distributions to preferred shareholders/unitholders

-24,261

'

'

'

'

-24,261

'

-24,261

-24,261

'

'

'

'

-24,261

Redemption of preferred shares/units

-177,955

-177,955

'

5,932

'

-5,932

'

-177,955

-177,955

'

'

'

'

-177,955

Distributions to common shareholders

-164,811

'

'

'

'

-164,811

'

'

'

'

'

'

'

'

Distributions to Partners

'

'

'

'

'

'

'

-167,092

'

-164,849

-2,243

'

'

-167,092

Contributions from (distributions to) noncontrolling interests, net

-2,692

'

'

'

'

'

-2,692

-449

'

'

'

'

-449

'

Ending Balance - Partnership at Sep. 30, 2013

'

'

'

'

'

'

'

3,012,739

447,683

2,532,146

19,944

3,780

9,186

3,003,553

Ending Balance - General Partner at Sep. 30, 2013

3,012,944

447,683

3,253

4,601,224

3,780

-2,076,299

33,303

'

'

'

'

'

'

'

Beginning Balance - Partnership at Jun. 30, 2013

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income

1,337

'

'

'

'

'

'

1,337

'

'

'

'

'

'

Other comprehensive income

-170

'

'

'

'

'

'

-170

'

'

'

'

'

'

Ending Balance - Partnership at Sep. 30, 2013

'

'

'

'

'

'

'

3,012,739

'

'

'

'

'

'

Ending Balance - General Partner at Sep. 30, 2013

$3,012,944

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated_Statement_of_Chan1

Consolidated Statement of Changes in Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2013
Distributions to common shareholders, per share	$0.51
Subsidiary of Common Parent [Member]	'
Distributions to Partners, per Common Unit	$0.51

General_Basis_of_Presentation_

General Basis of Presentation (Notes)	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
General Basis of Presentation	'
	General Basis of Presentation
	The interim consolidated financial statements included herein have been prepared by Duke Realty Corporation (the "General Partner") and Duke Realty Limited Partnership (the "Partnership"). In this Report, unless the context indicates otherwise, the terms "Company," "we," "us" and "our" refer to the General Partner and the Partnership, collectively, and those entities owned or controlled by the General Partner and/or the Partnership. The 2012 year-end consolidated balance sheet data included in this Quarterly Report on Form 10-Q (this "Report") was derived from the audited financial statements in the combined Annual Report on Form 10-K of the General Partner and the Partnership for the year ended December 31, 2012, but does not include all disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). The financial statements have been prepared in accordance with GAAP for interim financial information and in accordance with Rule 10-01 of Regulation S-X of the Securities Exchange Act of 1934, as amended. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and revenue and expenses during the reporting period. Our actual results could differ from those estimates and assumptions. These financial statements should be read in conjunction with Management's Discussion and Analysis of Financial Condition and Results of Operations included herein and the consolidated financial statements and notes thereto included in the combined Annual Report on Form 10-K of the General Partner and the Partnership for the year ended December 31, 2012.
	The General Partner was formed in 1985, and we believe that it qualifies as a real estate investment trust ("REIT") under the provisions of the Internal Revenue Code of 1986, as amended (the "Code"). The Partnership was formed on October 4, 1993, when the General Partner contributed all of its properties and related assets and liabilities, together with the net proceeds from an offering of additional shares of its common stock, to the Partnership. Simultaneously, the Partnership completed the acquisition of Duke Associates, a full-service commercial real estate firm operating in the Midwest whose operations began in 1972.
	The General Partner is the sole general partner of the Partnership, owning approximately 98.7% of the common partnership interests of the Partnership ("General Partner Units") at September 30, 2013. The remaining 1.3% of the common partnership interests ("Limited Partner Units" and, together with the General Partner Units, the "Common Units") are owned by limited partners. As the sole general partner of the Partnership, the General Partner has full, exclusive and complete responsibility and discretion in the day-to-day management and control of the Partnership. The General Partner and the Partnership are operated as one enterprise. The management of the General Partner consists of the same members as the management of the Partnership. As the sole general partner with control of the Partnership, the General Partner consolidates the Partnership for financial reporting purposes, and the General Partner does not have any significant assets other than its investment in the Partnership. Therefore, the assets and liabilities of the General Partner and the Partnership are substantially the same.
	Limited Partners have the right to redeem their Limited Partner Units, subject to certain restrictions. Pursuant to the Fourth Amended and Restated Agreement of Limited Partnership, as amended (the "Partnership Agreement"), the General Partner is obligated to redeem the Limited Partner Units in shares of its common stock, unless it determines in its reasonable discretion that the issuance of shares of its common stock could cause it to fail to qualify as a REIT. Each Limited Partner Unit shall be redeemed for one share of the General Partner's common stock, or, in the event that the issuance of shares could cause the General Partner to fail to qualify as a REIT, cash equal to the fair market value of one share of the General Partner's common stock at the time of redemption, in each case, subject to certain adjustments described in the Partnership Agreement. The Limited Partner Units are not required, per the terms of the Partnership Agreement, to be redeemed in registered shares of the General Partner. The General Partner also owns preferred partnership interests in the Partnership ("Preferred Units").
	We own and operate a portfolio primarily consisting of industrial and office properties and provide real estate services to third-party owners. Substantially all of our Rental Operations (see Note 10) are conducted through the Partnership. We conduct our Service Operations (see Note 10) through Duke Realty Services, LLC, Duke Realty Services Limited Partnership and Duke Construction Limited Partnership ("DCLP"), which are consolidated entities that are 100% owned by a combination of the General Partner and the Partnership. DCLP is owned through a taxable REIT subsidiary. The consolidated financial statements include our accounts and the accounts of our majority-owned or controlled subsidiaries.

Reclassifications

Reclassifications	9 Months Ended
	Sep. 30, 2013
Reclassifications [Abstract]	'
Reclassifications	'
	Reclassifications
	Certain amounts in the accompanying consolidated financial statements for 2012 have been reclassified to conform to the 2013 consolidated financial statement presentation.

OCI_Notes

OCI (Notes)	9 Months Ended
	Sep. 30, 2013
Accumulated Other Comprehensive Income [Abstract]	'
Comprehensive Income (Loss) Note [Text Block]	'
	Other Comprehensive Income
	In February 2013, the Financial Accounting Standards Board issued Accounting Standards Update No. 2013-02, Other Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-02"), which was effective for us beginning with the three months ended March 31, 2013. ASU 2013-02 requires presentation of significant amounts reclassified out of accumulated other comprehensive income. Activity within other comprehensive income or loss includes the amortization to interest expense, over the lives of previously hedged loans, of the values of interest rate swaps that have been settled, as well as changes in the fair values of currently outstanding interest rate swaps that we have designated as cash flow hedges. Activity within other comprehensive income is not material for any individual type of activity, as well as for all activities in the aggregate, for all periods presented in this Report.

Variable_Interest_Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2013
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]	'
Consolidation Policy for VIEs	'
	Variable Interest Entities
	At September 30, 2013, there were three unconsolidated joint ventures that met the criteria to be considered variable interest entities ("VIEs"). These three unconsolidated joint ventures were formed with the sole purpose of developing, constructing, leasing, marketing and selling or operating properties. The business activities of these unconsolidated joint ventures have been financed through a combination of equity contributions, partner/member loans, and third-party debt that is guaranteed by a combination of us and the other partner/member of each entity. All significant decisions for these unconsolidated joint ventures, including those decisions that most significantly impact each venture's economic performance, require unanimous approval of each joint venture's partners or members. In certain cases, these decisions also require lender approval. Unanimous approval requirements for these unconsolidated joint ventures include entering into new leases, setting annual operating budgets, selling underlying properties, and incurring additional indebtedness. Because no single entity exercises control over the decisions that most significantly affect each joint venture's economic performance, we determined there to be no individual primary beneficiary and that the equity method of accounting is appropriate.
	The following is a summary of the carrying value in our consolidated balance sheet, as well as our maximum loss exposure under guarantees for the three unconsolidated subsidiaries that we have determined to be VIEs at September 30, 2013 (in millions):
		Carrying Value			Maximum Loss Exposure
	Investment in unconsolidated companies	$	44.6		$	44.6
	Guarantee obligations (1)	$	(20.3	)	$	(141.9	)
	-1	We are party to guarantees of the third-party debt of these joint ventures, and our maximum loss exposure is equal to the maximum monetary obligation pursuant to the guarantee agreements. We have also recorded a liability for our probable future obligation under a guarantee to the lender of one of these ventures, which is included within the carrying value of our guarantee obligations. Pursuant to an agreement with the lender, we may make partner loans to this joint venture that will reduce our maximum guarantee obligation on a dollar-for-dollar basis. The carrying value of our recorded guarantee obligations is included in other liabilities in our Consolidated Balance Sheets.

Acquisitions_and_Dispositions

Acquisitions and Dispositions	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Acquisitions and Dispositions	'
	Acquisitions and Dispositions
	2013 Acquisitions
	We acquired 15 operating properties during the nine months ended September 30, 2013. These acquisitions consisted of three industrial properties in Central and Southern New Jersey, three industrial properties in Southern California, two industrial properties in Central California, one industrial property in Houston, Texas, one industrial property near Kansas City, Missouri, one industrial property near St. Louis, Missouri, two industrial properties in Northeast and Central Pennsylvania, one industrial property near Indianapolis, Indiana and one medical office property in Central Florida. The following table summarizes the fair value of amounts recognized for each major class of asset and liability (in thousands) for these acquisitions:
	Real estate assets	$	422,538
	Lease related intangible assets	58,826
	Total acquired assets	481,364
	Secured debt	103,638
	Below market lease liability	1,469
	Other liabilities	1,448
	Total assumed liabilities	106,555
	Fair value of acquired net assets	$	374,809
	The leases in the acquired properties had a weighted average remaining life at acquisition of approximately 7.6 years.
	Fair Value Measurements
	The fair value estimates used in allocating the aggregate purchase price of each acquisition among the individual components of real estate assets and liabilities were determined primarily through calculating the "as-if vacant" value of each building, using the income approach, and relied significantly upon internally determined assumptions. We have determined these estimates to have been primarily based upon Level 3 inputs, which are unobservable inputs based on our own assumptions. The range of most significant assumptions utilized in making the lease-up and future disposition estimates used in calculating the "as-if vacant" value of each building acquired during the nine months ended September 30, 2013 were as follows:
		Low		High
	Discount rate	6.6	%	9.67	%
	Exit capitalization rate	5.1	%	7.67	%
	Lease-up period (months)	12		24
	Net rental rate per square foot – Industrial	$2.95		$8.28
	Net rental rate per square foot – Medical Office	$18.00		$18.00
	Acquisition-Related Activity
	The acquisition-related activity in our Consolidated Statements of Operations and Comprehensive Income for the nine months ended September 30, 2013 and 2012 consisted of transaction costs related to completed acquisitions, which are expensed as incurred, as well as gains or losses related to acquisitions where we had a pre-existing non-controlling ownership interest. We recognized a gain of $962,000 on the pre-existing ownership interest that we held in one of the industrial properties we acquired and expenses of $3.5 million for transaction costs during the nine months ended September 30, 2013.
	Activity during the nine months ended September 30, 2012 consisted of transaction costs related to acquisitions, which were expensed as incurred.
	Dispositions
	We disposed of certain consolidated income-producing real estate assets and undeveloped land and received net cash proceeds of $330.7 million and $112.6 million during the nine months ended September 30, 2013 and 2012, respectively.
	During the nine months ended September 30, 2013, 17 office properties and one industrial property were sold from certain of our unconsolidated joint ventures for which our capital distributions totaled $89.5 million. Our share of gains from joint venture property sales, which are included in equity in earnings, related almost entirely to these sales and totaled $49.0 million.

Indebtedness

Indebtedness	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Indebtedness	'
	Indebtedness
	All debt is held directly or indirectly by the Partnership. The General Partner does not have any indebtedness, but does guarantee all of the unsecured debt of the Partnership.
	The following table summarizes the book value and changes in the fair value of our debt for the nine months ended September 30, 2013 (in thousands):
		Book Value		Book Value				Fair Value		Issuances and		Payments/Payoffs			Adjustments			Fair Value
		at 12/31/12		at 9/30/13				at 12/31/12		Assumptions					to Fair Value			at 9/30/13
	Fixed rate secured debt	$	1,149,541	$	1,139,262			$	1,251,477	$	103,638	$	(110,946	)	$	(23,801	)	$	1,220,368
	Variable rate secured debt	18,412		19,194				18,386		1,933		(1,151		)	27			19,195
	Unsecured debt	2,993,217		3,066,755				3,336,386		500,000		(426,462		)	(135,936		)	3,273,988
	Unsecured line of credit	285,000		210,000				285,632		—		(75,000		)	403			211,035
	Total	$	4,446,170	$	4,435,211			$	4,891,881	$	605,571	$	(613,559	)	$	(159,307	)	$	4,724,586
	Secured Debt
	Because our fixed rate secured debt is not actively traded in any marketplace, we utilized a discounted cash flow methodology to determine its fair value. Accordingly, we calculated fair value by applying an estimate of the current market rate to discount the debt's remaining contractual cash flows. Our estimate of a current market rate, which is the most significant input in the discounted cash flow calculation, is intended to replicate debt of similar maturity and loan-to-value relationship. The estimated rates ranged from 3.50% to 4.90%, depending on the attributes of the specific loans. The current market rates we utilized were internally estimated; therefore, we have concluded that our determination of fair value for our fixed rate secured debt was primarily based upon Level 3 inputs.
	During the nine months ended September 30, 2013, we repaid nine secured loans, at their maturity dates, totaling $100.1 million. These loans had a weighted average stated interest rate of 5.66%.
	During the nine months ended September 30, 2013, we assumed three secured loans, in conjunction with our acquisition activity, with a total face value of $99.3 million and a fair value of $103.6 million. These assumed loans had a weighted average remaining term at acquisition of 1.8 years and carry a weighted average stated interest rate of 5.59%. We used an estimated market interest rate of 3.00% in determining the fair value of these loans. Between the date of acquisition and the end of the most recent reporting period, interest rates increased, resulting in our estimated market interest rate for these loans increasing to 3.50%.
	Unsecured Debt
	At September 30, 2013, with the exception of the $250.0 million variable rate term note described below, all of our unsecured debt bore interest at fixed rates and primarily consisted of unsecured notes that are publicly traded. We utilized broker estimates in estimating the fair value of our fixed rate unsecured debt. Our unsecured notes are thinly traded and, in certain cases, the broker estimates were not based upon comparable transactions. The broker estimates took into account any recent trades within the same series of our fixed rate unsecured debt, comparisons to recent trades of other series of our fixed rate unsecured debt, trades of fixed rate unsecured debt from companies with profiles similar to ours, as well as overall economic conditions. We reviewed these broker estimates for reasonableness and accuracy, considering whether the estimates were based upon market participant assumptions within the principal and most advantageous market and whether any other observable inputs would be more accurate indicators of fair value than the broker estimates. We concluded that the broker estimates were representative of fair value. We have determined that our estimation of the fair value of our fixed rate unsecured debt was primarily based upon Level 3 inputs. The estimated trading values of our fixed rate unsecured debt, depending on the maturity and coupon rates, ranged from 93.00% to 124.00% of face value.
	In March 2013, we issued $250.0 million of unsecured notes that bear interest at 3.625%, have an effective rate of 3.72%, and mature on April 15, 2023.
	In May 2013, we issued and fully drew down on a term loan with an aggregate commitment of $250.0 million that bears interest at a variable rate of LIBOR plus 1.35% (equal to 1.54% for outstanding borrowings at September 30, 2013) and matures May 14, 2018.
	During the nine months ended September 30, 2013, we repaid two unsecured notes at their maturity dates totaling $425.0 million. These notes had a weighted average effective rate of 6.40% and a weighted average stated rate of 5.68%.
	The indentures (and related supplemental indentures) governing our outstanding series of notes also require us to comply with financial ratios and other covenants regarding our operations. We were in compliance with all such covenants at September 30, 2013.
	Unsecured Line of Credit
	Our unsecured line of credit at September 30, 2013 is described as follows (in thousands):
	Description	Maximum		Maturity Date		Outstanding
		Capacity				Balance at
						September 30, 2013
	Unsecured Line of Credit - Partnership	$	850,000	Dec-15		$	210,000
	The Partnership's unsecured line of credit has an interest rate on borrowings of LIBOR plus 1.25% (equal to 1.43% for outstanding borrowings at September 30, 2013) and a maturity date of December 2015. Subject to certain conditions, the terms also include an option to increase the facility by up to an additional $400.0 million, for a total of up to $1.25 billion.
	This line of credit provides us with an option to obtain borrowings from financial institutions that participate in the line at rates that may be lower than the stated interest rate, subject to certain restrictions.
	This line of credit contains financial covenants that require us to meet certain financial ratios and defined levels of performance, including those related to fixed charge coverage, unsecured interest expense coverage and debt-to-asset value (with asset value being defined in the Partnership's unsecured line of credit agreement). At September 30, 2013, we were in compliance with all covenants under this line of credit.
	To the extent that there are outstanding borrowings, we utilize a discounted cash flow methodology in order to estimate the fair value of our unsecured line of credit. The net present value of the difference between future contractual interest payments and future interest payments based on our estimate of a current market rate represents the difference between the book value and the fair value. Our estimate of a current market rate is based upon the rate, considering current market conditions and our specific credit profile, at which we estimate we could obtain similar borrowings. The current market rate of 1.48% that we utilized was internally estimated; therefore, we have concluded that our determination of fair value for our unsecured line of credit was primarily based upon a Level 3 input.

Shareholders_Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2013
Stockholders' Equity Note [Abstract]	'
Shareholders' Equity	'
	Shareholders' Equity of the General Partner and Partners' Capital of the Partnership
	General Partner
	In January 2013, the General Partner completed a public offering of 41.4 million common shares at an issue price of $14.25 per share, resulting in gross proceeds of $590.0 million and, after deducting underwriting fees and estimated offering costs, net proceeds of approximately $571.9 million. A portion of the net proceeds from this offering were used to repay all of the outstanding borrowings under the Partnership's existing revolving credit facility, which had an outstanding balance of $285.0 million at December 31, 2012, and the remaining proceeds were used to redeem all of the General Partner's outstanding 8.375% Series O Cumulative Redeemable Preferred Shares ("Series O Shares") and for general corporate purposes.
	In February 2013, the General Partner redeemed all of the outstanding shares of its Series O Shares at their liquidation amount of $178.0 million. Original offering costs of $5.9 million were included as a reduction to net income attributable to common shareholders in conjunction with the redemption of these shares.
	In the first nine months of 2013, the General Partner issued 3.7 million common shares pursuant to its at the market equity program, generating gross proceeds of approximately $61.9 million and, after deducting commissions and other costs, net proceeds of approximately $60.7 million. The General Partner paid approximately $897,000 in commissions related to the sale of these common shares. The proceeds from these offerings were used for general corporate purposes, which include the funding of development costs.
	Partnership
	For each common share or preferred share that the General Partner issues, the Partnership issues a corresponding General Partner Unit or Preferred Unit, as applicable, to the General Partner in exchange for the contribution of the proceeds from the stock issuance. Similarly, when the General Partner redeems or repurchases common shares or preferred shares, the Partnership redeems the corresponding Common Units or Preferred Units held by the General Partner at the same price.

Related_Party_Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	Related Party Transactions
	We provide property management, asset management, leasing, construction and other tenant-related services to unconsolidated companies in which we have equity interests. We recorded the corresponding fees based on contractual terms that approximate market rates for these types of services and have eliminated our ownership percentage of these fees in the consolidated financial statements. The following table summarizes the fees earned from these companies, prior to elimination, for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Management fees	$	2,246	$	2,796	$	6,872	$	8,251
	Leasing fees	310		622		1,432		2,856
	Construction and development fees	681		1,860		3,258		3,615

Net_Income_Loss_Per_Common_Sha

Net Income (Loss) Per Common Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Net Income (Loss) Per Common Share	'
	Net Income (Loss) Per Common Share or Common Unit
	Basic net income (loss) per common share or Common Unit is computed by dividing net income (loss) attributable to common shareholders or common unitholders, less dividends or distributions on share-based awards expected to vest (referred to as "participating securities" and primarily composed of unvested restricted stock units), by the weighted average number of common shares or Common Units outstanding for the period.
	Diluted net income (loss) per common share is computed by dividing the sum of basic net income (loss) attributable to common shareholders and the noncontrolling interest in earnings allocable to Limited Partner Units (to the extent the Limited Partner Units are dilutive) by the sum of the weighted average number of common shares outstanding and, to the extent they are dilutive, Units outstanding and any potential dilutive securities for the period. Diluted net income (loss) per Common Unit is computed by dividing the basic net income (loss) attributable to common unitholders by the sum of the weighted average number of Common Units outstanding and any potential dilutive securities for the period.
	The following table reconciles the components of basic and diluted net income (loss) per common share or Common Unit for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	General Partner
	Net income (loss) attributable to common shareholders	$	(6,067	)	$	(28,230	)	$	83,470		$	(93,102	)
	Less: Dividends on participating securities	(650		)	(680		)	(2,024		)	(2,388		)
	Basic net income (loss) attributable to common shareholders	(6,717		)	(28,910		)	81,446			(95,490		)
	Noncontrolling interest in earnings of common unitholders	—			—			1,142			—
	Diluted net income (loss) attributable to common shareholders	$	(6,717	)	$	(28,910	)	$	82,588		$	(95,490	)
	Weighted average number of common shares outstanding	324,895			270,289			320,810			265,153
	Weighted average Limited Partner Units outstanding	—			—			4,393			—
	Other potential dilutive shares	—			—			177			—
	Weighted average number of common shares and potential dilutive securities	324,895			270,289			325,380			265,153
	Partnership
	Net income (loss) attributable to common unitholders	$	(6,159	)	$	(28,689	)	$	84,612		$	(94,838	)
	Less: Distributions on participating securities	(650		)	(680		)	(2,024		)	(2,388		)
	Basic and diluted net income (loss) attributable to common unitholders	$	(6,809	)	$	(29,369	)	$	82,588		$	(97,226	)
	Weighted average number of Common Units outstanding	329,283			274,800			325,203			270,095
	Other potential dilutive units	—			—			177			—
	Weighted average number of Common Units and potential dilutive securities	329,283			274,800			325,380			270,095
	The Limited Partner Units are anti-dilutive to the General Partner for the three months ended September 30, 2013 and the three and nine months ended September 30, 2012 as a result of the net loss for those periods. In addition, substantially all potential shares related to our stock-based compensation plans are anti-dilutive for all periods presented. The following table summarizes the data that is excluded from the computation of net income (loss) per common share or Common Unit as a result of being anti-dilutive (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	General Partner
	Noncontrolling interest in loss of common unitholders	$	(92	)	$	(459	)	$	—		$	(1,736	)
	Weighted average Limited Partner Units outstanding	4,388			4,511			—			4,942
	General Partner and Partnership
	Other potential dilutive shares or units:
	Anti-dilutive outstanding potential shares or units under fixed stock option and other stock-based compensation plans	1,373			1,763			1,373			1,763
	Outstanding participating securities	3,866			4,045			3,866			4,045

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Reporting	'
	Segment Reporting
	We have four reportable operating segments at September 30, 2013, the first three of which consist of the ownership and rental of (i) industrial, (ii) office and (iii) medical office real estate investments. The operations of our industrial, office and medical office properties, along with our retail properties, are collectively referred to as "Rental Operations." Our retail properties, as well as any other properties not included in our reportable segments, do not by themselves meet the quantitative thresholds for separate presentation as a reportable segment. The fourth reportable segment consists of various real estate services such as property management, asset management, maintenance, leasing, development, general contracting and construction management to third-party property owners and joint ventures, and is collectively referred to as "Service Operations." Our reportable segments offer different products or services and are managed separately because each segment requires different operating strategies and management expertise.
	We assess and measure the overall operating results of the General Partner and the Partnership based upon Funds From Operations ("FFO"), which is an industry performance measure that management believes is a useful indicator of consolidated operating performance. FFO is used by industry analysts and investors as a supplemental operating performance measure of a REIT. The National Association of Real Estate Investment Trusts ("NAREIT") created FFO as a non-GAAP supplemental measure of REIT operating performance. FFO, as defined by NAREIT, represents GAAP net income (loss), excluding extraordinary items as defined under GAAP, gains or losses from sales of previously depreciated real estate assets, impairment charges related to depreciable real estate assets, plus certain non-cash items such as real estate asset depreciation and amortization, and after similar adjustments for unconsolidated partnerships and joint ventures. The most comparable GAAP measure is net income (loss) attributable to common shareholders or common unitholders. FFO attributable to common shareholders or common unitholders should not be considered as a substitute for net income (loss) attributable to common shareholders or common unitholders or any other measures derived in accordance with GAAP and may not be comparable to other similarly titled measures of other companies. FFO is calculated in accordance with the definition that was adopted by the Board of Governors of NAREIT. Historical cost accounting for real estate assets in accordance with GAAP implicitly assumes that the value of real estate assets diminishes predictably over time. Since real estate values instead have historically risen or fallen with market conditions, many industry analysts and investors have considered presentation of operating results for real estate companies that use historical cost accounting to be insufficient by themselves. Management believes that the use of FFO attributable to common shareholders or common unitholders, combined with net income (which remains the primary measure of performance), improves the understanding of operating results of REITs among the investing public and makes comparisons of REIT operating results more meaningful. Management believes that the use of FFO as a performance measure enables investors and analysts to readily identify the operating results of the long-term assets that form the core of a REIT's activity and assist them in comparing these operating results between periods or between different companies.
	Other revenue consists of other operating revenues not identified with one of our operating segments. We do not allocate interest expense and certain other non-property specific revenues and expenses ("Non-Segment Items," as shown in the table below) to our individual operating segments in determining our performance measure. Thus, the operational performance measure presented here on a segment-level basis represents net earnings, excluding depreciation expense and the Non-Segment Items not allocated, and is not meant to present FFO as defined by NAREIT. The following table shows (i) the revenues for each of the reportable segments and (ii) a reconciliation of FFO attributable to common shareholders or common unitholders to net income (loss) attributable to common shareholders or common unitholders for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
			Three Months Ended September 30,							Nine Months Ended September 30,
			2013				2012			2013			2012
	Revenues
	Rental Operations:
	Industrial		$	123,749			$	107,345		$	357,777		$	321,524
	Office		66,691				65,290			198,890			194,038
	Medical Office		35,093				21,108			101,733			59,336
	Non-reportable Rental Operations		1,765				1,429			5,807			5,276
	Service Operations		62,807				93,932			161,004			226,507
	Total segment revenues		290,105				289,104			825,211			806,681
	Other revenue		1,585				4,154			4,023			6,396
	Consolidated revenue from continuing operations		291,690				293,258			829,234			813,077
	Discontinued operations		3,912				9,774			18,419			32,868
	Consolidated revenue		$	295,602			$	303,032		$	847,653		$	845,945
	Reconciliation of Funds From Operations
	Net earnings excluding depreciation and Non-Segment Items:
	Industrial		$	92,052			$	79,803		$	266,044		$	240,605
	Office		38,842				37,193			116,385			113,425
	Medical Office		23,533				13,756			67,976			38,842
	Non-reportable Rental Operations		1,150				806			3,853			3,644
	Service Operations		3,415				6,213			18,079			16,988
			158,992				137,771			472,337			413,504
	Non-Segment Items:
	Interest expense		(58,100		)		(58,812		)	(176,005		)	(175,726		)
	Impairment charges on non-depreciable properties		—				—			(3,777		)	—
	Interest and other income, net		145				150			1,219			394
	Other operating expenses		(47		)		(130		)	(150		)	(591		)
	General and administrative expenses		(10,373		)		(8,934		)	(33,225		)	(32,367		)
	Gain on land sales		3,365				—			3,365			—
	Undeveloped land carrying costs		(2,108		)		(2,140		)	(6,837		)	(6,606		)
	Acquisition-related activity		(726		)		(954		)	(2,506		)	(2,563		)
	Income tax benefit		4,500				103			4,500			103
	Other non-segment income		(32		)		3,278			490			4,119
	Net income attributable to noncontrolling interests - consolidated entities not wholly owned by the Partnership		(140		)		(59		)	(487		)	(365		)
	Joint venture items		6,945				8,997			22,212			27,999
	Dividends on preferred shares/Preferred Units		(7,356		)		(11,081		)	(24,261		)	(35,356		)
	Adjustments for redemption of preferred shares/Preferred Units		—				—			(5,932		)	(5,730		)
	Discontinued operations		1,745				2,967			6,756			11,204
	FFO attributable to common unitholders of the Partnership		96,810				71,156			257,699			198,019
	Net (income) loss attributable to noncontrolling interests - common limited partnership interests in the Partnership		92				459			(1,142		)	1,736
	Noncontrolling interest share of FFO adjustments		(1,384		)		(1,638		)	(2,339		)	(5,358		)
	FFO attributable to common shareholders of the General Partner		95,518				69,977			254,218			194,397
	Depreciation and amortization on continuing operations		(103,594		)		(90,202		)	(296,791		)	(264,435		)
	Depreciation and amortization on discontinued operations		(844		)		(4,937		)	(6,686		)	(15,903		)
	Company's share of joint venture adjustments		(7,127		)		(8,782		)	(20,730		)	(26,008		)
	Gains on depreciated property sales on continuing operations		—				403			1,108			245
	Gains on depreciated property sales on discontinued operations		8,441				1,608			101,052			11,179
	Gains on depreciated property sales - share of joint venture		155				2,065			48,960			2,065
	Noncontrolling interest share of FFO adjustments		1,384				1,638			2,339			5,358
	Net income (loss) attributable to common shareholders of the General Partner		$	(6,067	)		$	(28,230	)	$	83,470		$	(93,102	)
	Add back: Net income (loss) attributable to noncontrolling interests - common limited partnership interests in the Partnership		(92		)		(459		)	1,142			(1,736		)
	Net income (loss) attributable to common unitholders of the Partnership		$	(6,159	)		$	(28,689	)	$	84,612		$	(94,838	)
	The assets for each of the reportable segments at September 30, 2013 and December 31, 2012 were as follows (in thousands):
		September 30,				December 31,
		2013				2012
	Assets
	Rental Operations:
	Industrial	$	4,293,447			$	3,836,721
	Office	1,672,180				1,683,314
Medical Office	1,270,802				1,202,929
Non-reportable Rental Operations	84,619				175,197
Service Operations	154,672				162,219
Total segment assets	7,475,720				7,060,380
Non-segment assets	411,119				499,721
Consolidated assets	$	7,886,839			$	7,560,101

Discontinued_Operations_and_As

Discontinued Operations and Assets Held for Sale	9 Months Ended
	Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations and Assets Held for Sale	'
	Discontinued Operations and Assets Held for Sale
	The following table illustrates the number of properties in discontinued operations:
		Held for Sale at September 30, 2013		Sold in 2013	Sold in 2012		Total
	Office	4		2	10		16
	Industrial	1		5	17		23
	Medical Office	1		3	0		4
	Retail	0		1	1		2
		6		11	28		45
	We allocate interest expense to discontinued operations and have included such interest expense in computing income from discontinued operations. Interest expense allocable to discontinued operations includes interest on any secured debt for properties included in discontinued operations and an allocable share of our consolidated unsecured interest expense for unencumbered properties. The allocation of unsecured interest expense to discontinued operations was based upon the gross book value of the unencumbered real estate assets included in discontinued operations as it related to the total gross book value of our unencumbered real estate assets.
	The following table illustrates the operations of the buildings reflected in discontinued operations for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Revenues	$	3,912		$	9,774		$	18,419		$	32,868
	Operating expenses	(1,398		)	(3,985		)	(6,993		)	(12,623		)
	Depreciation and amortization	(844		)	(4,937		)	(6,686		)	(15,903		)
	Operating income	1,670			852			4,740			4,342
	Interest expense	(769		)	(2,822		)	(4,670		)	(9,041		)
	Income (loss) before gain on sales	901			(1,970		)	70			(4,699		)
	Gain on sale of depreciable properties	8,441			1,608			101,052			11,179
	Income (loss) from discontinued operations	$	9,342		$	(362	)	$	101,122		$	6,480
	Dividends or distributions on preferred shares or Preferred Units and adjustments for the redemption or repurchase of preferred shares or Preferred Units are allocated entirely to continuing operations for both the General Partner and the Partnership.
	Allocation of Noncontrolling Interests - General Partner
	The following table illustrates the General Partner's share of the income (loss) attributable to common shareholders from continuing operations and discontinued operations, reduced by the allocation of income or loss between continuing and discontinued operations to the Limited Partner Units, for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Loss from continuing operations attributable to common shareholders	$	(15,285	)	$	(27,874	)	$	(16,286	)	$	(99,463	)
	Income (loss) from discontinued operations attributable to common shareholders	9,218			(356		)	99,756			6,361
	Net income (loss) attributable to common shareholders	$	(6,067	)	$	(28,230	)	$	83,470		$	(93,102	)
	Allocation of Noncontrolling Interests - Partnership
	Substantially all of the income (loss) from discontinued operations for all periods presented in the Partnership's Consolidated Statements of Operations and Comprehensive Income is attributable to the common unitholders.
	Properties Held for Sale
	At September 30, 2013, we classified six in-service properties as held-for-sale, which were included in discontinued operations, due to our intention and ability to sell these properties in the fourth quarter of 2013. The following table illustrates aggregate balance sheet information of these properties at September 30, 2013 (in thousands):
		30-Sep-13
	Real estate investment, net	$	49,821
	Other assets	7,969
	Total assets held-for-sale	$	57,790
	Accrued expenses	$	1,536
	Other liabilities	1,383
	Total liabilities held-for-sale	$	2,919

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	Declaration of Dividends/Distributions
	The General Partner's board of directors declared the following dividends/distributions at its regularly scheduled board meeting held on October 30, 2013:
	Class of stock/units	Quarterly Amount per Share or Unit	Record Date	Payment Date
	Common	$0.17	November 14, 2013	November 29, 2013
	Preferred (per depositary share or unit):
	Series J	$0.41	November 14, 2013	November 29, 2013
	Series K	$0.41	November 14, 2013	November 29, 2013
	Series L	$0.41	November 14, 2013	November 29, 2013

Variable_Interest_Entities_Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2013
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]	'
Balances Related to Joint Ventures	'
		Carrying Value			Maximum Loss Exposure
	Investment in unconsolidated companies	$	44.6		$	44.6
	Guarantee obligations (1)	$	(20.3	)	$	(141.9	)
	-1	We are party to guarantees of the third-party debt of these joint ventures, and our maximum loss exposure is equal to the maximum monetary obligation pursuant to the guarantee agreements. We have also recorded a liability for our probable future obligation under a guarantee to the lender of one of these ventures, which is included within the carrying value of our guarantee obligations. Pursuant to an agreement with the lender, we may make partner loans to this joint venture that will reduce our maximum guarantee obligation on a dollar-for-dollar basis. The carrying value of our recorded guarantee obligations is included in other liabilities in our Consolidated Balance Sheets.

Acquisitions_and_Dispositions_

Acquisitions and Dispositions (Tables)	9 Months Ended
	Sep. 30, 2013
Summary of Significant Assumptions Utilized in Estimates	'
		Low		High
	Discount rate	6.6	%	9.67	%
	Exit capitalization rate	5.1	%	7.67	%
	Lease-up period (months)	12		24
	Net rental rate per square foot – Industrial	$2.95		$8.28
	Net rental rate per square foot – Medical Office	$18.00		$18.00
Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'
Summary of Allocation of Fair Value of Amounts Recognized	'
	Real estate assets	$	422,538
	Lease related intangible assets	58,826
	Total acquired assets	481,364
	Secured debt	103,638
	Below market lease liability	1,469
	Other liabilities	1,448
	Total assumed liabilities	106,555
	Fair value of acquired net assets	$	374,809

Indebtedness_Tables

Indebtedness (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Fair Value, Liabilities Measured on a Recurring Basis, Disclosure Only	'
		Book Value		Book Value				Fair Value		Issuances and		Payments/Payoffs			Adjustments			Fair Value
		at 12/31/12		at 9/30/13				at 12/31/12		Assumptions					to Fair Value			at 9/30/13
	Fixed rate secured debt	$	1,149,541	$	1,139,262			$	1,251,477	$	103,638	$	(110,946	)	$	(23,801	)	$	1,220,368
	Variable rate secured debt	18,412		19,194				18,386		1,933		(1,151		)	27			19,195
	Unsecured debt	2,993,217		3,066,755				3,336,386		500,000		(426,462		)	(135,936		)	3,273,988
	Unsecured line of credit	285,000		210,000				285,632		—		(75,000		)	403			211,035
	Total	$	4,446,170	$	4,435,211			$	4,891,881	$	605,571	$	(613,559	)	$	(159,307	)	$	4,724,586
Unsecured Line of Credit	'
	Description	Maximum		Maturity Date		Outstanding
		Capacity				Balance at
						September 30, 2013
	Unsecured Line of Credit - Partnership	$	850,000	Dec-15		$	210,000

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2013
Related Party Transactions [Abstract]	'
Schedule of Fees Earned from Related Parties	'
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Management fees	$	2,246	$	2,796	$	6,872	$	8,251
	Leasing fees	310		622		1,432		2,856
	Construction and development fees	681		1,860		3,258		3,615

Net_Income_Loss_Per_Common_Sha1

Net Income (Loss) Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Reconciling the Components of Basic and Diluted Net Income (Loss) per Common Share	'
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	General Partner
	Net income (loss) attributable to common shareholders	$	(6,067	)	$	(28,230	)	$	83,470		$	(93,102	)
	Less: Dividends on participating securities	(650		)	(680		)	(2,024		)	(2,388		)
	Basic net income (loss) attributable to common shareholders	(6,717		)	(28,910		)	81,446			(95,490		)
	Noncontrolling interest in earnings of common unitholders	—			—			1,142			—
	Diluted net income (loss) attributable to common shareholders	$	(6,717	)	$	(28,910	)	$	82,588		$	(95,490	)
	Weighted average number of common shares outstanding	324,895			270,289			320,810			265,153
	Weighted average Limited Partner Units outstanding	—			—			4,393			—
	Other potential dilutive shares	—			—			177			—
	Weighted average number of common shares and potential dilutive securities	324,895			270,289			325,380			265,153
	Partnership
	Net income (loss) attributable to common unitholders	$	(6,159	)	$	(28,689	)	$	84,612		$	(94,838	)
	Less: Distributions on participating securities	(650		)	(680		)	(2,024		)	(2,388		)
	Basic and diluted net income (loss) attributable to common unitholders	$	(6,809	)	$	(29,369	)	$	82,588		$	(97,226	)
	Weighted average number of Common Units outstanding	329,283			274,800			325,203			270,095
	Other potential dilutive units	—			—			177			—
	Weighted average number of Common Units and potential dilutive securities	329,283			274,800			325,380			270,095
Computation of Anti-Dilutive Common Share	'
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	General Partner
	Noncontrolling interest in loss of common unitholders	$	(92	)	$	(459	)	$	—		$	(1,736	)
	Weighted average Limited Partner Units outstanding	4,388			4,511			—			4,942
	General Partner and Partnership
	Other potential dilutive shares or units:
	Anti-dilutive outstanding potential shares or units under fixed stock option and other stock-based compensation plans	1,373			1,763			1,373			1,763
	Outstanding participating securities	3,866			4,045			3,866			4,045

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Summary on Revenues and Funds from Operations	'
			Three Months Ended September 30,							Nine Months Ended September 30,
			2013				2012			2013			2012
	Revenues
	Rental Operations:
	Industrial		$	123,749			$	107,345		$	357,777		$	321,524
	Office		66,691				65,290			198,890			194,038
	Medical Office		35,093				21,108			101,733			59,336
	Non-reportable Rental Operations		1,765				1,429			5,807			5,276
	Service Operations		62,807				93,932			161,004			226,507
	Total segment revenues		290,105				289,104			825,211			806,681
	Other revenue		1,585				4,154			4,023			6,396
	Consolidated revenue from continuing operations		291,690				293,258			829,234			813,077
	Discontinued operations		3,912				9,774			18,419			32,868
	Consolidated revenue		$	295,602			$	303,032		$	847,653		$	845,945
	Reconciliation of Funds From Operations
	Net earnings excluding depreciation and Non-Segment Items:
	Industrial		$	92,052			$	79,803		$	266,044		$	240,605
	Office		38,842				37,193			116,385			113,425
	Medical Office		23,533				13,756			67,976			38,842
	Non-reportable Rental Operations		1,150				806			3,853			3,644
	Service Operations		3,415				6,213			18,079			16,988
			158,992				137,771			472,337			413,504
	Non-Segment Items:
	Interest expense		(58,100		)		(58,812		)	(176,005		)	(175,726		)
	Impairment charges on non-depreciable properties		—				—			(3,777		)	—
	Interest and other income, net		145				150			1,219			394
	Other operating expenses		(47		)		(130		)	(150		)	(591		)
	General and administrative expenses		(10,373		)		(8,934		)	(33,225		)	(32,367		)
	Gain on land sales		3,365				—			3,365			—
	Undeveloped land carrying costs		(2,108		)		(2,140		)	(6,837		)	(6,606		)
	Acquisition-related activity		(726		)		(954		)	(2,506		)	(2,563		)
	Income tax benefit		4,500				103			4,500			103
	Other non-segment income		(32		)		3,278			490			4,119
	Net income attributable to noncontrolling interests - consolidated entities not wholly owned by the Partnership		(140		)		(59		)	(487		)	(365		)
	Joint venture items		6,945				8,997			22,212			27,999
	Dividends on preferred shares/Preferred Units		(7,356		)		(11,081		)	(24,261		)	(35,356		)
	Adjustments for redemption of preferred shares/Preferred Units		—				—			(5,932		)	(5,730		)
	Discontinued operations		1,745				2,967			6,756			11,204
	FFO attributable to common unitholders of the Partnership		96,810				71,156			257,699			198,019
	Net (income) loss attributable to noncontrolling interests - common limited partnership interests in the Partnership		92				459			(1,142		)	1,736
	Noncontrolling interest share of FFO adjustments		(1,384		)		(1,638		)	(2,339		)	(5,358		)
	FFO attributable to common shareholders of the General Partner		95,518				69,977			254,218			194,397
	Depreciation and amortization on continuing operations		(103,594		)		(90,202		)	(296,791		)	(264,435		)
	Depreciation and amortization on discontinued operations		(844		)		(4,937		)	(6,686		)	(15,903		)
	Company's share of joint venture adjustments		(7,127		)		(8,782		)	(20,730		)	(26,008		)
	Gains on depreciated property sales on continuing operations		—				403			1,108			245
	Gains on depreciated property sales on discontinued operations		8,441				1,608			101,052			11,179
	Gains on depreciated property sales - share of joint venture		155				2,065			48,960			2,065
	Noncontrolling interest share of FFO adjustments		1,384				1,638			2,339			5,358
	Net income (loss) attributable to common shareholders of the General Partner		$	(6,067	)		$	(28,230	)	$	83,470		$	(93,102	)
	Add back: Net income (loss) attributable to noncontrolling interests - common limited partnership interests in the Partnership		(92		)		(459		)	1,142			(1,736		)
	Net income (loss) attributable to common unitholders of the Partnership		$	(6,159	)		$	(28,689	)	$	84,612		$	(94,838	)
Reportable Segments Consolidated Assets	'
		September 30,				December 31,
		2013				2012
	Assets
	Rental Operations:
	Industrial	$	4,293,447			$	3,836,721
	Office	1,672,180				1,683,314
	Medical Office	1,270,802				1,202,929
	Non-reportable Rental Operations	84,619				175,197
	Service Operations	154,672				162,219
	Total segment assets	7,475,720				7,060,380
	Non-segment assets	411,119				499,721
	Consolidated assets	$	7,886,839			$	7,560,101

Discontinued_Operations_and_As1

Discontinued Operations and Assets Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Table Illustration of Number of Properties in Discontinued Operations	'
		Held for Sale at September 30, 2013		Sold in 2013	Sold in 2012		Total
	Office	4		2	10		16
	Industrial	1		5	17		23
	Medical Office	1		3	0		4
	Retail	0		1	1		2
		6		11	28		45
Table Illustration of Discontinued Operations in Statement of Operations	'
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Revenues	$	3,912		$	9,774		$	18,419		$	32,868
	Operating expenses	(1,398		)	(3,985		)	(6,993		)	(12,623		)
	Depreciation and amortization	(844		)	(4,937		)	(6,686		)	(15,903		)
	Operating income	1,670			852			4,740			4,342
	Interest expense	(769		)	(2,822		)	(4,670		)	(9,041		)
	Income (loss) before gain on sales	901			(1,970		)	70			(4,699		)
	Gain on sale of depreciable properties	8,441			1,608			101,052			11,179
	Income (loss) from discontinued operations	$	9,342		$	(362	)	$	101,122		$	6,480
Allocation of Common Shareholders' Income (Loss) Between Continuing and Discontinued Operations	'
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Loss from continuing operations attributable to common shareholders	$	(15,285	)	$	(27,874	)	$	(16,286	)	$	(99,463	)
	Income (loss) from discontinued operations attributable to common shareholders	9,218			(356		)	99,756			6,361
	Net income (loss) attributable to common shareholders	$	(6,067	)	$	(28,230	)	$	83,470		$	(93,102	)
Schedule of Discontinued Operations, Properties Held-for-Sale, Aggregate Balance Sheet Information [Table Text Block]	'
	The following table illustrates aggregate balance sheet information of these properties at September 30, 2013 (in thousands):
		30-Sep-13
	Real estate investment, net	$	49,821
	Other assets	7,969
	Total assets held-for-sale	$	57,790
	Accrued expenses	$	1,536
	Other liabilities	1,383
	Total liabilities held-for-sale	$	2,919

Subsequent_Events_Tables

Subsequent Events (Tables)	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]	'
Schedule of Dividends Declared	'
	Class of stock/units	Quarterly Amount per Share or Unit	Record Date	Payment Date
	Common	$0.17	November 14, 2013	November 29, 2013
	Preferred (per depositary share or unit):
	Series J	$0.41	November 14, 2013	November 29, 2013
	Series K	$0.41	November 14, 2013	November 29, 2013
	Series L	$0.41	November 14, 2013	November 29, 2013

General_Basis_of_Presentation_1

General Basis of Presentation (Details)	9 Months Ended
	Sep. 30, 2013
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	98.70%
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest	1.30%

Variable_Interest_Entities_Bal

Variable Interest Entities (Balances Related to Joint Ventures) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
	entities
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]	'
Carrying Value of Investment in Unconsolidated Companies	$44.60
Maximum Loss Exposure From Investment In Unconsolidated VIEs	44.6
Carrying Value of Guarantee Obligations	-20.3
Maximum Loss Exposure from Guarantee Obligations	($141.90)
Number of Unconsolidated Joint Ventures Considered Variable Interest Entities	3

Acquisitions_and_Dispositions_1

Acquisitions and Dispositions (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Gain on Step Acquisition	($962,000)	$0
Proceeds from land and depreciated property sales, net	330,740,000	112,559,000
Capital distributions from unconsolidated companies	106,306,000	4,890,000
Gains on Depreciated Property Sales Share of Joint Venture	49,000,000	'
Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Gain on Step Acquisition	962,000	'
Business Combination, Acquisition Related Costs	-3,500,000	'
Number of real estate properties acquired	15	'
Weighted average remaining life of property (years)	'7 years 7 months 10 days	'
Medical Office Properties [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	1	'
New Jersey [Member] [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	3	'
Southern California [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	3	'
Central California [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	2	'
Houston, Texas [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	1	'
Kansas City, Missouri [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	1	'
St. Louis, Missouri [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	1	'
Northeast or Central Pennsylvania [Member] [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	2	'
Indianapolis Indiana [Member] | Industrial [Member] | Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'	'
Number of real estate properties acquired	1	'
Office [Member]	'	'
Number of Real Estate Properties Sold	17	'
Industrial [Member]	'	'
Number of Real Estate Properties Sold	1	'
Proceeds from sale of Property [Member]	'	'
Capital distributions from unconsolidated companies	$89,500,000	'

Acquisitions_and_Dispositions_2

Acquisitions and Dispositions (Summary of Allocation of Fair Value of Amounts Recognized) (Details) (Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member], USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Other Two Thousand Thirteen Acquisitions [Member] [Domain] [Member]	'
Real estate assets	$422,538
Lease related intangible assets	58,826
Total acquired assets	481,364
Secured debt	103,638
Below Market Lease, Gross	1,469
Other liabilities	1,448
Total assumed liabilities	106,555
Fair value of acquired assets	$374,809

Acquisitions_and_Dispositions_3

Acquisitions and Dispositions (Summary of Significant Assumptions Utilized in Estimates) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
	months
Minimum [Member]	'
Fair Value Inputs, Discount Rate	6.60%
Fair Value Inputs, Cap Rate	5.10%
Lease-up period (months)	12
Minimum [Member] | Industrial [Member]	'
Rental rate per square foot	2.95
Minimum [Member] | Medical Office [Member]	'
Rental rate per square foot	18
Maximum [Member]	'
Fair Value Inputs, Discount Rate	9.67%
Fair Value Inputs, Cap Rate	7.67%
Lease-up period (months)	24
Maximum [Member] | Industrial [Member]	'
Rental rate per square foot	8.28
Maximum [Member] | Medical Office [Member]	'
Rental rate per square foot	18

Indebtedness_Summary_of_Book_V

Indebtedness (Summary of Book Value and Changes in Fair Value of Debt) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Book value	$4,435,211	$4,446,170
Fair value	4,724,586	4,891,881
Issuances and assumptions	605,571	'
Payments/Payoffs	-613,559	'
Adjustments to fair value	-159,307	'
Fixed Rate Secured Debt [Member]	'	'
Book value	1,139,262	1,149,541
Fair value	1,220,368	1,251,477
Issuances and assumptions	103,638	'
Payments/Payoffs	-110,946	'
Adjustments to fair value	-23,801	'
Variable Rate Secured Debt [Member]	'	'
Book value	19,194	18,412
Fair value	19,195	18,386
Issuances and assumptions	1,933	'
Payments/Payoffs	-1,151	'
Adjustments to fair value	27	'
Unsecured Debt [Member]	'	'
Book value	3,066,755	2,993,217
Fair value	3,273,988	3,336,386
Issuances and assumptions	500,000	'
Payments/Payoffs	-426,462	'
Adjustments to fair value	-135,936	'
Line of Credit [Member]	'	'
Book value	210,000	285,000
Fair value	211,035	285,632
Issuances and assumptions	0	'
Payments/Payoffs	-75,000	'
Adjustments to fair value	$403	'

Indebtedness_Secured_Debt_Deta

Indebtedness Secured Debt (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Debt Instrument [Line Items]	'	'
Repayments of Secured Debt	$112,097,000	$107,240,000
Fixed Rate Secured Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum	3.50%	'
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum	4.90%	'
number of secured loans repaid	9	'
Repayments of Secured Debt	100,100,000	'
Repaid Debt, Weighted Average Interest Rate	5.66%	'
Number Of Secured Loans Assumed In Property Acquisition	3	'
Debt Instrument, Face Amount	99,300,000	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	$103,600,000	'
Assumed Debt - Weighted Average Remaining Term	'1 year 9 months 9 days	'
Debt, Weighted Average Interest Rate	5.59%	'
Debt Instrument, Interest Rate, Effective Percentage	3.00%	'

Indebtedness_Unsecured_Debt_De

Indebtedness Unsecured Debt (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Debt Instrument [Line Items]	'	'
Proceeds from unsecured debt	$500,000	$600,000
Repayments of Unsecured Debt	426,462	172,374
Variable Rate UnSecured Debt [Member] [Member]	'	'
Debt Instrument [Line Items]	'	'
Proceeds from unsecured debt	250,000	'
Fixed Rate Unsecured Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Proceeds from unsecured debt	250,000	'
Debt Instrument, Estimated Trading Values, Percent of Face Value, Minimum	93.00%	'
Debt Instrument, Estimated Trading Values, Percent of Face Value, Maximum	124.00%	'
Debt Instrument, Interest Rate, Stated Percentage	3.63%	'
Debt Instrument, Interest Rate, Effective Percentage	3.72%	'
number of unsecured notes repaid	2	'
Repayments of Unsecured Debt	$425,000	'
Debt Instrument, Covenant Compliance	'We were in compliance with all such covenants at September 30, 2013	'
Fixed Rate Unsecured Debt Repaid [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Interest Rate, Stated Percentage	5.68%	'
Debt Instrument, Interest Rate, Effective Percentage	6.40%	'
Variable Rate Unsecured Debt [Member] | London Interbank Offered Rate (LIBOR) [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'
Debt Instrument, Basis Spread on Variable Rate	1.35%	'
Debt Instrument, Interest Rate at Period End	1.54%	'

Indebtedness_Unsecured_Line_of

Indebtedness (Unsecured Line of Credit) (Details) (USD $)	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013
	Line of Credit [Member]	Unsecured Line of Credit DRLP [Member]	London Interbank Offered Rate (LIBOR) [Member]
			Unsecured Line of Credit DRLP [Member]
Debt Instrument, Description of Variable Rate Basis	'	'	'LIBOR
Line of Credit Facility, Maximum Borrowing Capacity	'	$1,250,000,000	'
Line of Credit Facility, Covenant Compliance	'	'we were in compliance with all covenants under this line of credit.	'
Current Market Rate Of Unsecured Lines Of Credit	'	1.48%	'
Debt Instrument, Basis Spread on Variable Rate	'	'	1.25%
Line of Credit Facility, Interest Rate at Period End	'	'	1.43%
Borrowing capacity of unsecured line of credit	'	850,000,000	'
Maturity date	'	1-Dec-15	'
Line of Credit Facility Increase	'	400,000,000	'
Line of credit balance	$285,000,000	$210,000,000	'

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended			1 Months Ended	9 Months Ended		9 Months Ended	1 Months Ended
Share data in Millions, unless otherwise specified	Jan. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Jan. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Jan. 31, 2013
						8.375% Series O Cumulative Redeemable Preferred Shares [Member]	Secondary Offering [Member]	At-the-market equity issuance [Member]	Line of Credit [Member]	At-the-market equity issuance [Member]	Secondary Offering [Member]
										Gross Proceeds [Member]	Gross Proceeds [Member]
Preferred stock dividend rate, percentage	'	'	'	'	'	8.38%	'	'	'	'	'
Payments for Repurchase of Redeemable Preferred Stock	'	'	'	$177,955,000	$168,272,000	$178,000,000	'	'	'	'	'
Adjustments for redemption of preferred shares/units	'	0	0	-5,932,000	-5,730,000	-5,900,000	'	'	'	'	'
Common shares, shares issued	'	'	'	'	'	'	41.4	3.7	'	'	'
Stock Issued During Period, Value, Other	14.25	'	'	'	'	'	'	'	'	'	'
Issuance of common shares	'	'	'	632,531,000	236,301,000	'	571,900,000	60,700,000	'	61,900,000	590,000,000
Line of Credit Facility, Amount Outstanding	'	'	'	'	'	'	'	'	285,000,000	'	'
Payments for Commissions	'	'	'	'	'	'	'	$897,000	'	'	'

Related_Party_Transactions_Sch

Related Party Transactions (Schedule of Fees Earned from 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
Management Fees [Member]	'	'	'	'
Revenue from related party transactions	$2,246	$2,796	$6,872	$8,251
Leasing Fees [Member]	'	'	'	'
Revenue from related party transactions	310	622	1,432	2,856
Construction and Development Fees [Member]	'	'	'	'
Revenue from related party transactions	$681	$1,860	$3,258	$3,615

Net_Income_Loss_Per_Common_Sha2

Net Income (Loss) Per Common Share Reconciling the Components of Basic and Diluted Net Income (Loss) per Common Share (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
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'	'	'
Net income (loss) attributable to common shareholders/unitholders	($6,067)	($28,230)	$83,470	($93,102)
Less: Dividends on Participating Securities	-650	-680	-2,024	-2,388
Basic Net Income (Loss) Attributable To Common Stockholders	-6,717	-28,910	81,446	-95,490
Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Redeemable	0	0	1,142	0
Diluted Net Income (Loss) Attributable to Common Stockholders	-6,717	-28,910	82,588	-95,490
Weighted average number of common shares/units outstanding	324,895	270,289	320,810	265,153
Weighted Average Limited Partnership Units Outstanding	0	0	4,393	0
Other potential dilutive shares/units	0	0	177	0
Weighted average number of common shares/units and potential dilutive securities	324,895	270,289	325,380	265,153
Subsidiary of Common Parent [Member]	'	'	'	'
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'	'	'
Net income (loss) attributable to common shareholders/unitholders	-6,159	-28,689	84,612	-94,838
Less: Dividends on Participating Securities	-650	-680	-2,024	-2,388
Basic Net Income (Loss) Attributable To Common Stockholders	($6,809)	($29,369)	$82,588	($97,226)
Weighted average number of common shares/units outstanding	329,283	274,800	325,203	270,095
Other potential dilutive shares/units	0	0	177	0
Weighted average number of common shares/units and potential dilutive securities	329,283	274,800	325,380	270,095

Net_Income_Loss_Per_Common_Sha3

Net Income (Loss) Per Common Share (Computation of Anti-Dilutive Common Shares) (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
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Redeemable	$0	$0	$1,142	$0
Weighted Average Limited Partnership Units Outstanding	0	0	4,393	0
Anti-Dilutive [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Redeemable	($92)	($459)	$0	($1,736)
Weighted Average Limited Partnership Units Outstanding	4,388	4,511	0	4,942
Stock Option [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive securities	1,373	1,763	1,373	1,763
Participating Securities [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive securities	3,866	4,045	3,866	4,045

Segment_Reporting_Summary_on_R

Segment Reporting (Summary on Revenues and Funds from Operations) (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
Number of Reportable Segments	'	'	4	'
Rental and related revenue	$228,883	$199,326	$668,230	$586,570
General contractor and service fee revenue (''Service Operations'')	62,807	93,932	161,004	226,507
Revenues	291,690	293,258	829,234	813,077
Discontinued Operations	3,912	9,774	18,419	32,868
Consolidated Revenue	295,602	303,032	847,653	845,945
Interest expense	-58,100	-58,812	-176,005	-175,726
Asset impairment charges	0	0	-3,777	0
Interest and other income, net	145	150	1,219	394
Other operating expenses	-47	-130	-150	-591
General and administrative expenses	-10,373	-8,934	-33,225	-32,367
Earnings from sales of land	3,365	0	3,365	0
Undeveloped land carrying costs	-2,108	-2,140	-6,837	-6,606
Acquisition-related activity	-726	-954	-2,506	-2,563
Income Tax Benefit	4,500	103	4,500	103
Dividends on preferred shares/units	-7,356	-11,081	-24,261	-35,356
Adjustments for redemption of preferred shares/units	0	0	-5,932	-5,730
FFO Attributable To Common Unitholders of the Partnership	96,810	71,156	257,699	198,019
FFO attributable to common shareholders of the General Partner	95,518	69,977	254,218	194,397
Depreciation and amortization on continuing operations	-103,594	-90,202	-296,791	-264,435
Depreciation and amortization, discontinued operations	-844	-4,937	-6,686	-15,903
Gains on depreciated property sales on continuing operations	0	403	1,108	245
Gains on depreciated property sales on discontinued operations	8,441	1,608	101,052	11,179
Gains on depreciated property sales - share of joint venture	'	'	49,000	'
Net income (loss) attributable to common shareholders/unitholders	-6,067	-28,230	83,470	-93,102
Net income (loss) attributable to common unitholders of the Partnership	-6,159	-28,689	84,612	-94,838
Operating Segments [Member]	'	'	'	'
Revenues	290,105	289,104	825,211	806,681
Net earnings excluding depreciation and Non-Segment Items	158,992	137,771	472,337	413,504
Operating Segments [Member] | Industrial [Member]	'	'	'	'
Rental and related revenue	123,749	107,345	357,777	321,524
Net earnings excluding depreciation and Non-Segment Items	92,052	79,803	266,044	240,605
Operating Segments [Member] | Office [Member]	'	'	'	'
Rental and related revenue	66,691	65,290	198,890	194,038
Net earnings excluding depreciation and Non-Segment Items	38,842	37,193	116,385	113,425
Operating Segments [Member] | Medical Office [Member]	'	'	'	'
Rental and related revenue	35,093	21,108	101,733	59,336
Net earnings excluding depreciation and Non-Segment Items	23,533	13,756	67,976	38,842
Operating Segments [Member] | All Other Segments [Member]	'	'	'	'
Rental and related revenue	1,765	1,429	5,807	5,276
Net earnings excluding depreciation and Non-Segment Items	1,150	806	3,853	3,644
Operating Segments [Member] | Service Operations [Member]	'	'	'	'
General contractor and service fee revenue (''Service Operations'')	62,807	93,932	161,004	226,507
Net earnings excluding depreciation and Non-Segment Items	3,415	6,213	18,079	16,988
Corporate, Non-Segment [Member]	'	'	'	'
Rental and related revenue	1,585	4,154	4,023	6,396
Discontinued Operations	3,912	9,774	18,419	32,868
Interest expense	-58,100	-58,812	-176,005	-175,726
Asset impairment charges	0	0	-3,777	0
Interest and other income, net	145	150	1,219	394
Other operating expenses	-47	-130	-150	-591
General and administrative expenses	-10,373	-8,934	-33,225	-32,367
Earnings from sales of land	3,365	0	3,365	0
Undeveloped land carrying costs	-2,108	-2,140	-6,837	-6,606
Acquisition-related activity	-726	-954	-2,506	-2,563
Income Tax Benefit	4,500	103	4,500	103
Other non-segment income	-32	3,278	490	4,119
Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, NonRedeemable	-140	-59	-487	-365
Joint venture items	6,945	8,997	22,212	27,999
Dividends on preferred shares/units	-7,356	-11,081	-24,261	-35,356
Adjustments for redemption of preferred shares/units	0	0	-5,932	-5,730
Discontinued operations	1,745	2,967	6,756	11,204
Net (income) loss attributable to noncontrolling interests - common limited partnership interests in the Partnership	92	459	-1,142	1,736
Noncontrolling Interest Share of FFO Adjustments	-1,384	-1,638	-2,339	-5,358
Depreciation and amortization on continuing operations	-103,594	-90,202	-296,791	-264,435
Depreciation and amortization, discontinued operations	-844	-4,937	-6,686	-15,903
Company's share of joint venture adjustments	-7,127	-8,782	-20,730	-26,008
Gains on depreciated property sales on continuing operations	0	403	1,108	245
Gains on depreciated property sales on discontinued operations	8,441	1,608	101,052	11,179
Gains on depreciated property sales - share of joint venture	155	2,065	48,960	2,065
Noncontrolling Interest Share of FFO Adjustments, Reconciliation Add-Back	1,384	1,638	2,339	5,358
Add back: Net income (loss) attributable to noncontrolling interests - common limited partnership interests in the Partnership	($92)	($459)	$1,142	($1,736)

Segment_Reporting_Reportable_S

Segment Reporting (Reportable Segments Consolidated Assets) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Total Assets	$7,886,839	$7,560,101
Corporate, Non-Segment [Member]	'	'
Total Assets	411,119	499,721
Operating Segments [Member]	'	'
Total Assets	7,475,720	7,060,380
Operating Segments [Member] | Industrial [Member]	'	'
Total Assets	4,293,447	3,836,721
Operating Segments [Member] | Office [Member]	'	'
Total Assets	1,672,180	1,683,314
Operating Segments [Member] | Medical Office [Member]	'	'
Total Assets	1,270,802	1,202,929
Operating Segments [Member] | All Other Segments [Member]	'	'
Total Assets	84,619	175,197
Operating Segments [Member] | Service Operations [Member]	'	'
Total Assets	$154,672	$162,219

Discontinued_Operations_and_As2

Discontinued Operations and Assets Held for Sale (Table Illustration of Number of Properties in Discontinued Operations) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
	buildings	buildings
Number of properties held for sale in discontinued operations	6	'
Number of properties sold in discontinued operations	11	28
Total number of properties in discontinued operations	45	'
Office [Member]	'	'
Number of properties held for sale in discontinued operations	4	'
Number of properties sold in discontinued operations	2	10
Total number of properties in discontinued operations	16	'
Industrial [Member]	'	'
Number of properties held for sale in discontinued operations	1	'
Number of properties sold in discontinued operations	5	17
Total number of properties in discontinued operations	23	'
Medical Office [Member]	'	'
Number of properties held for sale in discontinued operations	1	'
Number of properties sold in discontinued operations	3	0
Total number of properties in discontinued operations	4	'
Retail [Member]	'	'
Number of properties held for sale in discontinued operations	0	'
Number of properties sold in discontinued operations	1	1
Total number of properties in discontinued operations	2	'

Discontinued_Operations_and_As3

Discontinued Operations and Assets Held for Sale (Table Illustration of Discontinued Operations in Income Statement) (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
Discontinued Operations	'	'	'	'
Revenues	$3,912	$9,774	$18,419	$32,868
Operating Expenses	-1,398	-3,985	-6,993	-12,623
Depreciation and amortization, discontinued operations	-844	-4,937	-6,686	-15,903
Operating Income (Loss)	1,670	852	4,740	4,342
Interest Expense	-769	-2,822	-4,670	-9,041
Income (loss) before gain on sales	901	-1,970	70	-4,699
Gains on depreciated property sales on discontinued operations	8,441	1,608	101,052	11,179
Income (loss) from discontinued operations	$9,342	($362)	$101,122	$6,480

Discontinued_Operations_and_As4

Discontinued Operations and Assets Held for Sale (Allocation of Shareholders' Income (Loss) Between Continuing and Discontinued Operations) (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
Discontinued Operations	'	'	'	'
Income (loss) from continuing operations attributable to common shareholders	($15,285)	($27,874)	($16,286)	($99,463)
Income (loss) from discontinued operations attributable to common shareholders	9,218	-356	99,756	6,361
Net income (loss) attributable to common shareholders/unitholders	($6,067)	($28,230)	$83,470	($93,102)

Discontinued_Operations_and_As5

Discontinued Operations and Assets Held for Sale (Aggregate Balance Sheet of Properties Held for Sale Included in Discontinued Operations) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
	buildings
Discontinued Operations	'
Discontinued Operation, Number of In-service Properties Held for Sale	6
Real estate investment, net	$49,821
Other assets	7,969
Total assets held-for-sale	57,790
Accrued expenses	1,536
Other liabilities	1,383
Total liabilities held-for-sale	$2,919

Subsequent_Events_Details

Subsequent Events (Details) (Declaration of Dividends [Member], USD $)	9 Months Ended	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
		Common Stock [Member]	Series J Preferred Stock [Member]	Series K Preferred Stock [Member]	Series L Preferred Stock [Member]
Subsequent Event [Line Items]	'	'	'	'	'
Common stock dividends declared per share	'	$0.17	'	'	'
Preferred stock dividends declared per share	'	'	$0.41	$0.41	$0.41
Record date	'	14-Nov-13	14-Nov-13	14-Nov-13	14-Nov-13
Payment date	'	29-Nov-13	29-Nov-13	29-Nov-13	29-Nov-13
Declared date	30-Oct-13	'	'	'	'