Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 251,477	$ 80,204
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements	79,022	79,062
Amortization of deferred leasing and other costs	14,979	14,511
Amortization of deferred financing costs	2,506	2,439
Straight-line rental income and expense, net	(10,255)	(8,021)
Loss on debt extinguishment	21,948	70
Gain on land and property sales	(211,839)	(22,598)
Third-party construction contracts, net	785	749
Other accrued revenues and expenses, net	(9,368)	14,651
Operating distributions received in excess of (less than) equity in earnings from unconsolidated joint ventures	3,079	(10,925)
Net cash provided by operating activities	142,334	150,142
Cash flows from investing activities:
Development of real estate investments	(161,868)	(140,432)
Acquisition of buildings and related intangible assets	(32,974)	(34,738)
Acquisition of land and other real estate assets	(202,282)	(64,594)
Second generation tenant improvements, leasing costs and building improvements	(14,437)	(14,676)
Other deferred leasing costs	(12,280)	(8,007)
Other assets	(18,143)	(36,844)
Proceeds from land and depreciated property sales, net	315,134	85,479
Capital distributions from unconsolidated joint ventures	33,645	3,532
Capital contributions and advances to unconsolidated joint ventures	(10,553)	0
Net cash used for investing activities	(103,758)	(210,280)
Cash flows from financing activities:
Proceeds from issuance of common shares, net	40,578	30,381
Proceeds from unsecured debt	0	446,634
Payments on unsecured debt	(320,110)	(40,226)
Payments on secured indebtedness including principal amortization	(1,064)	(1,007)
Borrowings (repayments) on line of credit, net	260,000	(295,000)
Distributions to common shareholders/unitholders	(107,175)	(95,310)
Distributions to noncontrolling Interest	(1,086)	(1,092)
Tax payments on stock-based compensation awards	(7,180)	(4,754)
Change in book cash overdrafts	16,094	(14,430)
Other Financing Activities	48	(270)
Deferred financing costs	(137)	(9,800)
Net cash (used for) provided by financing activities	(120,032)	15,126
Net decrease in cash, cash equivalents and restricted cash	(81,456)	(45,012)
Cash, cash equivalents and restricted cash at beginning of period	103,164	67,223
Cash, cash equivalents and restricted cash at end of period	21,708	22,211
Noncash activities:
Lease liabilities arising from right-of-use assets	385	18,257
Assumption of indebtedness and other liabilities in real estate acquisitions	0	40,226
Contribution of properties to unconsolidated joint venture	67,148	0
Non-cash distribution of assets from unconsolidated joint ventures, net	0	11,023
Duke Realty Limited Partnership [Member]
Cash flows from operating activities:
Net income	251,477	80,204
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements	79,022	79,062
Amortization of deferred leasing and other costs	14,979	14,511
Amortization of deferred financing costs	2,506	2,439
Straight-line rental income and expense, net	(10,255)	(8,021)
Loss on debt extinguishment	21,948	70
Gain on land and property sales	(211,839)	(22,598)
Third-party construction contracts, net	785	749
Other accrued revenues and expenses, net	(9,368)	14,651
Operating distributions received in excess of (less than) equity in earnings from unconsolidated joint ventures	3,079	(10,925)
Net cash provided by operating activities	142,334	150,142
Cash flows from investing activities:
Development of real estate investments	(161,868)	(140,432)
Acquisition of buildings and related intangible assets	(32,974)	(34,738)
Acquisition of land and other real estate assets	(202,282)	(64,594)
Second generation tenant improvements, leasing costs and building improvements	(14,437)	(14,676)
Other deferred leasing costs	(12,280)	(8,007)
Other assets	(18,143)	(36,844)
Proceeds from land and depreciated property sales, net	315,134	85,479
Capital distributions from unconsolidated joint ventures	33,645	3,532
Capital contributions and advances to unconsolidated joint ventures	(10,553)	0
Net cash used for investing activities	(103,758)	(210,280)
Cash flows from financing activities:
Contributions from the General Partner	40,578	30,381
Proceeds from unsecured debt	0	446,634
Payments on unsecured debt	(320,110)	(40,226)
Payments on secured indebtedness including principal amortization	(1,064)	(1,007)
Borrowings (repayments) on line of credit, net	260,000	(295,000)
Distributions to common shareholders/unitholders	(108,261)	(96,252)
Distributions to noncontrolling Interest	0	(150)
Tax payments on stock-based compensation awards	(7,180)	(4,754)
Change in book cash overdrafts	16,094	(14,430)
Other Financing Activities	48	(270)
Deferred financing costs	(137)	(9,800)
Net cash (used for) provided by financing activities	(120,032)	15,126
Net decrease in cash, cash equivalents and restricted cash	(81,456)	(45,012)
Cash, cash equivalents and restricted cash at beginning of period	103,164	67,223
Cash, cash equivalents and restricted cash at end of period	21,708	22,211
Noncash activities:
Lease liabilities arising from right-of-use assets	385	18,257
Assumption of indebtedness and other liabilities in real estate acquisitions	0	40,226
Contribution of properties to unconsolidated joint venture	67,148	0
Non-cash distribution of assets from unconsolidated joint ventures, net	$ 0	$ 11,023