A summary of outstanding indebtedness of the Operating Partnership as of March 31, 2017 and December 31, 2016 is as follows (in thousands):



Indebtedness	Interest Rate at March 31, 2017		Maturity Date	Principal Outstanding March 31, 2017				Principal Outstanding December 31, 2016
Global revolving credit facility	Various	(1)	Jan 15, 2020	$	574,379		(2)	$	210,077		(2)
Deferred financing costs, net				(9,912		)		(10,868		)
Global revolving credit facility, net				564,467				199,209
Unsecured Term Loans
Unsecured term loan — 5-year	Various	(3)(4)	Jan 15, 2021	1,211,515			(5)	1,188,498			(5)
Unsecured term loan — 7-year	Various	(3)(4)	Jan 15, 2023	300,000			(5)	300,000			(5)
Deferred financing costs, net				(5,848		)		(6,137		)
Unsecured term loan, net				1,505,667				1,482,361
Unsecured senior notes:
Prudential Shelf Facility:
Series E	5.730%		Jan 20, 2017	—			(6)	50,000
Total Prudential Shelf Facility				—				50,000
Senior Notes:
5.875% notes due 2020	5.875%		Feb 1, 2020	500,000				500,000
3.400% notes due 2020	3.400%		Oct 1, 2020	500,000				500,000
5.250% notes due 2021	5.250%		Mar 15, 2021	400,000				400,000
3.950% notes due 2022	3.950%		Jul 1, 2022	500,000				500,000
3.625% notes due 2022	3.625%		Oct 1, 2022	300,000				300,000
4.750% notes due 2023	4.750%		Oct 13, 2023	376,500			(7)	370,200			(7)
2.625% notes due 2024	2.625%		Apr 15, 2024	639,120			(8)	631,020			(8)
4.250% notes due 2025	4.250%		Jan 17, 2025	502,000			(7)	493,600			(7)
4.750% notes due 2025	4.750%		Oct 1, 2025	450,000				450,000
Unamortized discounts				(15,040		)		(15,649		)
Total senior notes, net of discount				4,152,580				4,129,171
Deferred financing costs, net				(24,470		)		(25,374		)
Total unsecured senior notes, net of discount and deferred financing costs				4,128,110				4,153,797



Indebtedness	Interest Rate at March 31, 2017	Maturity Date	Principal Outstanding March 31, 2017			Principal Outstanding December 31, 2016
Mortgage loans:
731 East Trade Street	8.22%	Jul 1, 2020	$	2,784		$	2,916
Unamortized net premiums			311			334
Total mortgage loans, including premiums			3,095			3,250
Deferred financing costs, net			(10		)	(10		)
Total mortgage loans, including premiums and net of deferred financing costs			3,085			3,240
Total indebtedness			$	6,241,569		$	5,838,607

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(1)

The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 100 basis points, which is based on the current credit ratings of our long-term debt. An annual facility fee of 20 basis points, which is based on the credit ratings of our long-term debt, is due and payable quarterly on the total commitment amount of the facility. Two six-month extensions are available, which we may exercise if certain conditions are met.


(2)	Balances as of March 31, 2017 and December 31, 2016 are as follows (balances, in thousands):



Denomination of Draw	Balance as of March 31, 2017			Weighted-average interest rate		Balance as of December 31, 2016			Weighted-average interest rate
Floating Rate Borrowing (a)
U.S. dollar ($)	$	80,000		1.91	%	$	105,000		1.67	%
British pound sterling (£)	328,183		(b)	1.27	%	11,106		(c)	1.25	%
Euro (€)	43,141		(b)	0.63	%	15,250		(c)	0.63	%
Hong Kong dollar (HKD)	2,432		(b)	1.45	%	1,728		(c)	1.66	%
Japanese yen (JPY)	96,530		(b)	0.96	%	54,273		(c)	0.92	%
Singapore dollar (SGD)	2,004		(b)	1.66	%	11,186		(c)	1.52	%
Canadian dollar (CAD)	12,089		(b)	1.94	%	11,534		(c)	1.92	%
Total	$	564,379		1.27	%	$	210,077		1.39	%
Base Rate Borrowing (d)
U.S. dollar ($)	$	10,000		4.00	%	$	—		—	%
Total borrowings	$	574,379		1.32	%	$	210,077		1.39	%


(a)	The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 100 basis points, which is based on the credit ratings of our long-term debt.


(b)	Based on exchange rates of $1.26 to £1.00, $1.07 to €1.00, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.72 to 1.00 SGD and $0.75 to 1.00 CAD, respectively, as of March 31, 2017.


(c)	Based on exchange rates of $1.23 to £1.00, $1.05 to €1.00, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.69 to 1.00 SGD and $0.74 to 1.00 CAD, respectively, as of December 31, 2016.


(d)	The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus the applicable margin, currently zero basis points, which is based on the credit rating of our long-term debt.


(3)	Interest rates are based on our current senior unsecured debt ratings and are 110 basis points and 155 basis points over the applicable index for floating rate advances for the 5-Year Term Loan and the 7-Year Term Loan, respectively.


(4)	We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar, Singapore dollar, British pound sterling and Canadian dollar tranches of the unsecured term loan. See Note 14 "Derivative Instruments" for further information.


(5)	Balances as of March 31, 2017 and December 31, 2016 are as follows (balances, in thousands):



Denomination of Draw	Balance as of March 31, 2017			Weighted-average interest rate			Balance as of December 31, 2016			Weighted-average interest rate
U.S. dollar ($)	$	710,911		2.20	%	(b)	$	710,911		1.99	%	(d)
British pound sterling (£)	212,691		(a)	1.36	%	(b)	209,132		(c)	1.36	%	(d)
Singapore dollar (SGD)	231,021		(a)	1.86	%	(b)	222,824		(c)	1.76	%	(d)
Australian dollar (AUD)	180,273		(a)	2.73	%		170,325		(c)	2.72	%
Hong Kong dollar (HKD)	85,868		(a)	1.54	%		86,029		(c)	1.77	%
Canadian dollar (CAD)	73,964		(a)	1.99	%	(b)	73,294		(c)	2.00	%	(d)
Japanese yen (JPY)	16,787		(a)	1.05	%		15,983		(c)	0.98	%
Total	$	1,511,515		2.03	%	(b)	$	1,488,498		1.93	%	(d)


(a)	Based on exchange rates of $1.26 to £1.00, $0.72 to 1.00 SGD, $0.76 to 1.00 AUD, $0.13 to 1.00 HKD, $0.75 to 1.00 CAD and $0.01 to 1.00 JPY, respectively, as of March 31, 2017.


(b)	As of March 31, 2017, the weighted-average interest rate reflecting interest rate swaps was 2.43% (U.S. dollar), 1.89% (British pound sterling), 1.91% (Singapore dollar), 1.88% (Canadian dollar) and 2.22% (Total). See Note 14 "Derivative Instruments" for further discussion on interest rate swaps.


(c)	Based on exchange rates of $1.23 to £1.00, $0.69 to 1.00 SGD, $0.72 to 1.00 AUD,$0.13 to 1.00 HKD, $0.74 to 1.00 CAD and $0.01 to 1.00 JPY, respectively, as of December 31, 2016.


(d)	As of December 31, 2016, the weighted-average interest rate reflecting interest rate swaps was 2.45% (U.S. dollar), 1.89% (British pound sterling), 1.90% (Singapore dollar), 1.88% (Canadian dollar) and 2.23% (Total).


(6)	Unsecured note paid in full at maturity.


(7)	Based on exchange rate of $1.26 to £1.00 as of March 31, 2017 and $1.23 to £1.00 as of December 31, 2016.


(8)	Based on exchange rate of $1.07 to €1.00 as of March 31, 2017 and $1.05 to €1.00 as of December 31, 2016.