A summary of outstanding indebtedness of the Operating Partnership as of June 30, 2018 and December 31, 2017 is as follows (in thousands):



Indebtedness	Interest Rate at June 30, 2018		Maturity Date	Principal Outstanding at June 30, 2018				Principal Outstanding at December 31, 2017
Global revolving credit facility	Various	(1)	Jan 15, 2020	$	472,438		(2)	$	558,191		(2)
Deferred financing costs, net				(5,467		)		(7,245		)
Global revolving credit facility, net				466,971				550,946
Unsecured Term Loans
Unsecured term loan — 5-year	Various	(3)(4)	Jan 15, 2021	1,080,867			(5)	1,125,117			(5)
Unsecured term loan — 7-year	Various	(3)(4)	Jan 15, 2023	300,000			(5)	300,000			(5)
Deferred financing costs, net				(4,083		)		(4,784		)
Unsecured term loan, net				1,376,784				1,420,333
Floating rate notes due 2019	EURIBOR + 0.500%		May 22, 2019	146,050			(6)	150,063			(6)
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
2.750% notes due 2023	2.750%		Feb 1, 2023	350,000				350,000
4.750% notes due 2023	4.750%		Oct 13, 2023	396,210			(7)	405,390			(7)
2.625% notes due 2024	2.625%		Apr 15, 2024	701,040			(6)	720,300			(6)
2.750% notes due 2024	2.750%		Jul 19, 2024	330,175			(7)	337,825			(7)
4.250% notes due 2025	4.250%		Jan 17, 2025	528,280			(7)	540,520			(7)
4.750% notes due 2025	4.750%		Oct 1, 2025	450,000				450,000
3.700% notes due 2027	3.700%		Aug 15, 2027	1,000,000				1,000,000
4.450% notes due 2028	4.450%		Jul 15, 2028	650,000				—
3.300% notes due 2029	3.300%		Jul 19, 2029	462,245			(7)	472,955			(7)
Unamortized discounts				(17,509		)		(18,508		)
Total senior notes, net of discount				7,196,491				6,608,545
Deferred financing costs, net				(40,407		)		(37,788		)
Total unsecured senior notes, net of discount and deferred financing costs				7,156,084				6,570,757



Indebtedness	Interest Rate at June 30, 2018		Maturity Date	Principal Outstanding June 30, 2018			Principal Outstanding December 31, 2017
Mortgage loans:
731 East Trade Street	8.22%		Jul 1, 2020	$	2,080		$	2,370
Secured note due 2023	LIBOR + 1.100%	(4)	Mar 1, 2023	104,000			104,000
Unamortized net premiums				194			241
Total mortgage loans, including premiums				106,274			106,611
Deferred financing costs, net				(29		)	(29		)
Total mortgage loans, including premiums and net of deferred financing costs				106,245			106,582
Total indebtedness				$	9,106,084		$	8,648,618

_________________________________

(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 June 30, 2018 and December 31, 2017 are as follows (balances, in thousands):



Denomination of Draw	Balance as of June 30, 2018			Weighted-average interest rate		Balance as of December 31, 2017			Weighted-average interest rate
Floating Rate Borrowing (a)
U.S. dollar ($)	$	205,000		3.09	%	$	400,000		2.48	%
British pound sterling (£)	—			—	%	18,918		(d)	1.50	%
Euro (€)	60,757		(c)	0.63	%	31,213		(d)	0.62	%
Australian dollar (AUD)	27,917		(c)	2.94	%	—			—	%
Hong Kong dollar (HKD)	6,741		(c)	2.88	%	4,100		(d)	2.20	%
Japanese yen (JPY)	106,827		(c)	0.92	%	65,890		(d)	0.96	%
Singapore dollar (SGD)	3,523		(c)	2.42	%	—			—	%
Canadian dollar (CAD)	61,673		(c)	2.64	%	23,070		(d)	2.36	%
Total	$	472,438		2.21	%	$	543,191		2.15	%
Base Rate Borrowing (b)
U.S. dollar ($)	$	—		—	%	$	15,000		4.50	%
Total borrowings	$	472,438		2.21	%	$	558,191		2.21	%


(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)	The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate.


(c)	Based on exchange rates of $1.17 to €1.00, $0.74 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.73 to 1.00 SGD and $0.76 to 1.00 CAD, respectively, as of June 30, 2018.


(d)	Based on exchange rates of $1.35 to £1.00, $1.20 to €1.00, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.80 to 1.00 CAD, respectively, as of December 31, 2017.


(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, British pound sterling and Canadian dollar tranches of the unsecured term loans and the secured note due 2023. See Note 14 "Derivative Instruments" for further information.


(5)	Balances as of June 30, 2018 and December 31, 2017 are as follows (balances, in thousands):



Denomination of Draw	Balance as of June 30, 2018			Weighted-average interest rate			Balance as of December 31, 2017			Weighted-average interest rate
U.S. dollar ($)	$	606,911		3.39	%	(b)	$	606,911		2.78	%	(d)
British pound sterling (£)	223,825		(a)	1.61	%	(b)	229,011		(c)	1.59	%	(d)
Singapore dollar (SGD)	207,914		(a)	2.49	%		233,788		(c)	2.17	%
Australian dollar (AUD)	170,537		(a)	3.02	%		179,841		(c)	2.79	%
Hong Kong dollar (HKD)	85,028		(a)	2.75	%		85,762		(c)	2.20	%
Canadian dollar (CAD)	74,998		(a)	2.74	%	(b)	78,357		(c)	2.44	%	(d)
Japanese yen (JPY)	11,654		(a)	1.02	%		11,447		(c)	1.05	%
Total	$	1,380,867		2.82	%	(b)	$	1,425,117		2.42	%	(d)


(a)	Based on exchange rates of $1.32 to £1.00, $0.73 to 1.00 SGD, $0.74 to 1.00 AUD, $0.13 to 1.00 HKD, $0.76 to 1.00 CAD and $0.01 to 1.00 JPY, respectively, as of June 30, 2018.


(b)	As of June 30, 2018, the weighted-average interest rate reflecting interest rate swaps was 2.72% (U.S. dollar), 1.89% (British pound sterling), 1.88% (Canadian dollar) and 2.53% (Total). See Note 14 "Derivative Instruments" for further discussion on interest rate swaps.


(c)	Based on exchange rates of $1.35 to £1.00, $0.75 to 1.00 SGD, $0.78 to 1.00 AUD,$0.13 to 1.00 HKD, $0.80 to 1.00 CAD and $0.01 to 1.00 JPY, respectively, as of December 31, 2017.


(d)	As of December 31, 2017, the weighted-average interest rate reflecting interest rate swaps was 2.72% (U.S. dollar), 1.89% (British pound sterling), 1.88% (Canadian dollar) and 2.41% (Total).


(6)	Based on exchange rates of $1.17 to €1.00 as of June 30, 2018 and $1.20 to €1.00 as of December 31, 2017.


(7)	Based on exchange rates of $1.32 to £1.00 as of June 30, 2018 and $1.35 to £1.00 as of December 31, 2017.