Business Combinations (DFT Merger Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Business Acquisition [Line Items]
Total revenue	$ 971,336	$ 986,519
Net income available to common shareholders	$ 242,036	$ 22,634
Income per share, diluted (in dollars per share)	$ 0.91	$ 0.09
Digital Realty Trust, L.P.
Business Acquisition [Line Items]
Total revenue	$ 971,336	$ 986,519
Net income available to common shareholders	$ 249,836	$ 26,934
Income per share, diluted (in dollars per share)	$ 0.91	$ 0.09
Merger related costs	$ 52,400
Adjustment to diluted earnings per share (in shares)	54.3
Revenue associated with properties acquired	$ 47,400
Net income associated with properties acquired	2,500
Acquisition expenses	$ 52,400