Consolidated Statement of Changes in Equity Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Common Stock, Dividends, Per Share, Cash Paid	$ 0.815	$ 0.77	$ 0.73
Duke Realty Limited Partnership [Member]
Distribution Made to Limited Partner, Distributions Paid, Per Unit	$ 0.815	0.77	$ 0.73
Special Dividend [Member]
Common Stock, Dividends, Per Share, Cash Paid		0.85		$ 0.69
Special Dividend [Member] | Duke Realty Limited Partnership [Member]
Distribution Made to Limited Partner, Distributions Paid, Per Unit		$ 0.85		$ 0.69