Capital and Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2017

(b) Redeemable Preferred Units



							Units Outstanding as of December 31,		Balance (in thousands, net of issuance costs) as of December 31,
Preferred Units ⁽¹⁾	Date(s) Issued	Initial Date to Redeem ⁽²⁾	Total Liquidation Value (in thousands) ⁽³⁾		Annual Distribution Rate ⁽⁴⁾		2017	2016	2017		2016
6.625% Series C Cumulative Redeemable Perpetual Preferred Units	Sep 14, 2017	May 15, 2021	$	201,250	$	1.65625	8,050,000	—	$	219,250	$	—
6.625% Series F Cumulative Redeemable Preferred Units ⁽⁵⁾	Apr 5, 2012	Apr 5, 2017	182,500		1.65625		—	7,300,000	—		176,191
5.875% Series G Cumulative Redeemable Preferred Units	Apr 9, 2013	Apr 9, 2018	250,000		1.46875		10,000,000	10,000,000	241,468		241,468
7.375% Series H Cumulative Redeemable Preferred Units	Mar 26, 2014	Mar 26, 2019	365,000		1.84375		14,600,000	14,600,000	353,290		353,290
6.350% Series I Cumulative Redeemable Preferred Units	Aug 24, 2015	Aug 24, 2020	250,000		1.58750		10,000,000	10,000,000	242,012		242,012
5.250% Series J Cumulative Redeemable Preferred Units	Aug 7, 2017	Aug 7, 2022	200,000		1.31250		8,000,000	—	193,540		—
			$	1,448,750			50,650,000	41,900,000	$	1,249,560	$	1,012,961


(1)	All series of preferred units do not have a stated maturity date and are not subject to any sinking fund or mandatory redemption provisions. Upon liquidation, dissolution or winding up, each series of preferred units will rank senior to Digital Realty Trust, Inc. common units and on parity with the other series of preferred units.

(2)

Except in limited circumstances, reflects earliest date that Digital Realty Trust Inc. may exercise its option to redeem the corresponding series of preferred stock, at a redemption price of $25.00 per share, plus accrued and unpaid dividends up to but excluding the date of redemption. The Operating Partnership is required to redeem the corresponding series of preferred units in the event that the General Partner redeems a series of preferred stock.


(3)	Liquidation preference is $25.00 per unit.


(4)	Distributions on preferred units are cumulative and payable quarterly in arrears.

(5)

Redeemed on April 5, 2017 for $25.01840 per unit, or a redemption price of $25.00 per unit, plus accrued and unpaid distributions up to but not including the redemption date of approximately $0.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $6.3 million were recorded as a reduction to net income available to common unitholders.

Schedule of Dividends/Distributions

We have declared and paid the following dividends on our common and preferred stock for the years ended December 31, 2017, 2016 and 2015 (in thousands):



Date dividend declared	Dividend payable date	Series C Preferred Stock			Series E Preferred Stock			Series F Preferred Stock			Series G Preferred Stock		Series H Preferred Stock		Series I Preferred Stock			Series J Preferred Stock			Common Stock
February 25, 2015	March 31, 2015	$	—		$	5,031		$	3,023		$	3,672	$	6,730	$	—		$	—		$	115,419	⁽¹⁾
May 12, 2015	June 30, 2015	—			5,031			3,023			3,672		6,730		—			—			115,458		⁽¹⁾
August 11, 2015	September 30, 2015	—			5,031			3,023			3,672		6,730		—			—			115,454		⁽¹⁾
November 12, 2015	December 31, 2015 for Preferred Stock; January 15, 2016 for Common Stock	—			5,031			3,023			3,672		6,730		5,600		⁽²⁾	—			124,417		⁽¹⁾
		$	—		$	20,124		$	12,092		$	14,688	$	26,920	$	5,600		$	—		$	470,748
February 17, 2016	March 31, 2016	$	—		$	5,031		$	3,023		$	3,672	$	6,730	$	3,969		$	—		$	131,587	⁽³⁾
May 11, 2016	June 30, 2016	—			5,031			3,023			3,672		6,730		3,969			—			131,607		⁽³⁾
August 10, 2016	September 30, 2016	—			—		⁽⁴⁾	3,023			3,672		6,730		3,969			—			131,657		⁽³⁾
November 9, 2016	December 30, 2016 for Preferred Stock; January 13, 2017 for Common Stock	—			—			3,023			3,672		6,730		3,969			—			141,882		⁽³⁾
		$	—		$	10,062		$	12,092		$	14,688	$	26,920	$	15,876		$	—		$	536,733
March 1, 2017	March 31, 2017	$	—		$	—		$	3,023		$	3,672	$	6,730	$	3,969		$	—		$	148,358	⁽⁵⁾
May 8, 2017	June 30, 2017	—			—			—		⁽⁶⁾	3,672		6,730		3,969			—			150,814		⁽⁵⁾
August 7, 2017	September 29, 2017	—			—			—			3,672		6,730		3,969			—			191,041		⁽⁵⁾
November 2, 2017	December 29, 2017 for Preferred Stock; January 12, 2018 for Common Stock	3,963		⁽⁷⁾	—			—			3,672		6,730		3,969			4,200		⁽⁷⁾	191,067		⁽⁵⁾
		$	3,963		$	—		$	3,023		$	14,688	$	26,920	$	15,876		$	4,200		$	681,280

Annual rate of dividend per share		$	1.65625		$	1.75000		$	1.65625		$	1.46875	$	1.84375	$	1.58750		$	1.31250


(1)	$3.400 annual rate of dividend per share.


(2)	Represents a pro rata dividend from and including the original issue date to and including December 31, 2015.


(3)	$3.520 annual rate of dividend per share.

(4)

Redeemed on September 15, 2016 for $25.35972 per share, or a redemption price of $25.00 per share, plus accrued and unpaid dividends up to but not including the redemption date of approximately $4.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $10.3 million were recorded as a reduction to net income available to common stockholders.

Schedule of Accumulated Other Comprehensive Income (Loss)

The accumulated balances for each item within other comprehensive income (loss), net are as follows (in thousands):



	Foreign currency translation adjustments			Cash flow hedge adjustments			Foreign currency net investment hedge adjustments			Accumulated other comprehensive income (loss), net
Balance as of December 31, 2015	$	(90,342	)	$	(6,248	)	$	—		$	(96,590	)
Net current period change	(85,300		)	6,246			35,149			(43,905		)
Reclassification to interest expense from interest rate swaps	—			4,890			—			4,890
Balance as of December 31, 2016	$	(175,642	)	$	4,888		$	35,149		$	(135,605	)
Net current period change	28,272			5,898			(9,411		)	24,759
Reclassification to interest expense from interest rate swaps	—			2,414			—			2,414
Balance as of December 31, 2017	$	(147,370	)	$	13,200		$	25,738		$	(108,432	)

Digital Realty Trust, L.P.

Class of Stock [Line Items]

Schedule of Dividends/Distributions

All distributions on our units are at the discretion of Digital Realty Trust, Inc.’s board of directors. We have declared and paid the following distributions on our common and preferred units for the years ended December 31, 2017, 2016 and 2015 (in thousands):



Date distribution declared	Distribution payable date	Series C Preferred Units			Series E Preferred Units			Series F Preferred Units			Series G Preferred Units		Series H Preferred Units			Series I Preferred Units			Series J Preferred Units			Common Units
Feb 25, 2015	March 31, 2015	$	—		$	5,031		$	3,023		$	3,672	$	6,730		$	—		$	—		$	117,896	⁽¹⁾
May 12, 2015	June 30, 2015	—			5,031			3,023			3,672		6,730		⁽²⁾	—			—			117,938		⁽¹⁾
Aug 11, 2015	September 30, 2015	—			5,031			3,023			3,672		6,730			—			—			117,962		⁽¹⁾
Nov 12, 2015	December 31, 2015 for Preferred Units; January 15, 2016 for Common Units	—			5,031			3,023			3,672		6,730			5,600		⁽²⁾	—			126,827		⁽¹⁾
		$	—		$	20,124		$	12,092		$	14,688	$	26,920		$	5,600		$	—		$	480,623
Feb 17, 2016	March 31, 2016	$	—		$	5,031		$	3,023		$	3,672	$	6,730		$	3,969		$	—		$	131,587	⁽³⁾
May 11, 2016	June 30, 2016	—			5,031			3,023			3,672		6,730			3,969			—			131,607		⁽³⁾
Aug 10, 2016	September 30, 2016	—			—		⁽⁴⁾	3,023			3,672		6,730			3,969			—			131,657		⁽³⁾
Nov 9, 2016	December 31, 2016 for Preferred Units; January 13, 2017 for Common Units	—			—			3,023			3,672		6,730			3,969			—			144,193		⁽³⁾
		$	—		$	10,062		$	12,092		$	14,688	$	26,920		$	15,876		$	—		$	539,044
Mar 1, 2017	March 31, 2017	$	—		$	—		$	3,023		$	3,672	$	6,730		$	3,969		$	—		$	150,968	⁽⁵⁾
May 8, 2017	June 30, 2017	—			—			—		⁽⁶⁾	3,672		6,730			3,969			—			153,176		⁽⁵⁾
Aug 7, 2017	September 29, 2017	—			—			—			3,672		6,730			3,969			—			199,049		⁽⁵⁾
Nov 2, 2017	December 29, 2017 for Preferred Units; January 12, 2018 for Common Units	3,963		⁽⁷⁾	—			—			3,672		6,730			3,969			4,200		⁽⁷⁾	199,061		⁽⁵⁾
		$	3,963		$	—		$	3,023		$	14,688	$	26,920		$	15,876		$	4,200		$	702,254

Annual rate of distribution per unit		$	1.65625		$	1.75000		$	1.65625		$	1.46875	$	1.84375		$	1.58800		$	1.31250


(1)	$3.400 annual rate of distribution per unit.


(2)	Represents a pro rata distribution from and including the original issue date to and including December 31, 2015.


(3)	$3.520 annual rate of distribution per unit.

(4)

Redeemed on September 15, 2016 for $25.35972 per unit, or a redemption price of $25.00 per unit, plus accrued and unpaid distributions up to but not including the redemption date of approximately $4.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $10.3 million were recorded as a reduction to net income available to common unitholders.

Schedule of Accumulated Other Comprehensive Income (Loss)

The accumulated balances for each item within other comprehensive income (loss) are as follows (in thousands):



	Foreign currency translation adjustments			Cash flow hedge adjustments			Foreign currency net investment hedge adjustments			Accumulated other comprehensive income (loss)
Balance as of December 31, 2015	$	(93,883	)	$	(7,081	)	$	—		$	(100,964	)
Net current period change	(86,621		)	6,304			35,694			(44,623		)
Reclassification to interest expense from interest rate swaps	—			4,968			—			4,968
Balance as of December 31, 2016	$	(180,504	)	$	4,191		$	35,694		$	(140,619	)
Net current period change	28,709			6,108			(9,542		)	25,275
Reclassification to interest expense from interest rate swaps	—			2,459			—			2,459
Balance as of December 31, 2017	$	(151,795	)	$	12,758		$	26,152		$	(112,885	)