Debt Facilities

Mortgage and Loans Payable

As of June 30, 2018 and December 31, 2017, the Company's mortgage and loans payable consisted of the following (in thousands):



	June 30, 2018			December 31, 2017
Term loans	$	1,354,570		$	1,417,352
Mortgage payable and loans payable	45,859			48,872
	1,400,429			1,466,224
Less amount representing unamortized debt discount and debt issuance cost	(9,221		)	(10,666		)
Add amount representing unamortized mortgage premium	1,956			2,051
	1,393,164			1,457,609
Less current portion	(75,224		)	(64,491		)
Total	$	1,317,940		$	1,393,118

Senior Notes

As of June 30, 2018 and December 31, 2017, the Company's senior notes consisted of the following (in thousands):



	June 30, 2018					December 31, 2017
	Amount			Effective Rate		Amount			Effective Rate
5.000% Infomart Senior Notes	$	750,000		4.40	%	$	—		—	%
5.375% Senior Notes due 2022	750,000			5.56	%	750,000			5.56	%
5.375% Senior Notes due 2023	1,000,000			5.51	%	1,000,000			5.51	%
2.875% Euro Senior Notes due 2024	875,550			3.08	%	—			—	%
5.75% Senior Notes due 2025	500,000			5.88	%	500,000			5.88	%
2.875% Euro Senior Notes due 2025	1,167,400			3.04	%	1,201,000			3.04	%
5.875% Senior Notes due 2026	1,100,000			6.03	%	1,100,000			6.03	%
2.875% Euro Senior Notes due 2026	1,167,400			3.04	%	1,201,000			3.04	%
5.375% Senior Notes due 2027	1,250,000			5.51	%	1,250,000			5.51	%
	8,560,350					7,002,000
Less amount representing unamortized debt issuance cost	(82,297		)			(78,151		)
Add amount representing unamortized debt premium	7,158					—
	8,485,211					6,923,849
Less current portion	(150,828		)			—
Total	$	8,334,383				$	6,923,849

Infomart Senior Notes

On April 2, 2018, in connection with the closing of the Infomart Dallas Acquisition, the Company issued $750.0 million aggregate principal amount of 5.000% senior unsecured notes in five new series due in each of April 2019, October 2019, April 2020, October 2020 and April 2021, with each series consisting of $150.0 million principal amount, which are collectively referred to as the "Infomart Senior Notes". The Infomart Senior Notes were fair valued as of the acquisition date and the Company recognized debt premium of $8.2 million. Interest on the notes is payable semi-annually on April 2 and October 2 of each year, commencing on October 2, 2018. The Infomart Senior Notes are not redeemable prior to their maturity dates. As of June 30, 2018, debt premium, net of amortization, related to the Infomart Senior Notes was $7.2 million.

2024 Euro Senior Notes

On March 14, 2018, the Company issued €750.0 million, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018, aggregate principal amount of 2.875% senior notes due March 15, 2024, which are referred to as the "2024 Euro Senior Notes". Interest on the notes is payable semi-annually in arrears on March 15 and September 15 of each year, commencing on September 15, 2018. Debt issuance costs related to the 2024 Euro Senior Notes were $11.6 million. As of June 30, 2018, debt issuance costs related to the 2024 Euro Senior Notes, net of amortization, were $10.4 million at the exchange rate in effect on that date.

All senior notes are unsecured and rank equal in right of payment to the Company’s existing or future senior indebtedness and senior in right of payment to the Company’s existing and future subordinated indebtedness. The senior notes are effectively subordinated to all of the existing and future secured debt, including debt outstanding under any bank facility or secured by any mortgage, to the extent of the assets securing such debt. They are also structurally subordinated to any existing and future indebtedness and other liabilities (including trade payables) of any of the Company’s subsidiaries.

Each series of senior notes is governed by a supplemental indenture between the Company and U.S. Bank National Association, as trustee. The supplemental indenture contains covenants that limit the Company’s ability and the ability of its subsidiaries to, among other things:


•	incur liens;


•	enter into sale-leaseback transactions; and


•	merge or consolidate with any other person.

The Company is not required to make any mandatory redemption with respect to the senior notes; however, upon the event of a change in control, the Company may be required to offer to purchase the senior notes.

Optional Redemption Schedule



Senior Note Description	Early Equity Redemption Price	First Scheduled Redemption Date	First Scheduled Redemption Price	Second Year Redemption Price	Third Year Redemption Price
2.875% Euro due 2024	102.875%	September 15, 2020	101.438%	100.719%	100.000%

The 2024 Euro Senior Notes provide for optional redemption. Within 90 days of the closing of one or more equity offerings and at any time prior to the first scheduled redemption date listed in the Optional Redemption Schedule, the Company may redeem up to 35% of the aggregate principal amount of the notes outstanding, at a redemption price listed in the Optional Redemption Schedule, plus accrued and unpaid interest to the redemption date, provided that at least 65% of the aggregate principal amount of the notes issued under the supplemental indenture remains outstanding immediately after such redemption(s).

On or after the first scheduled redemption date listed in the Optional Redemption Schedule, the Company may redeem all or a part of the notes, on one or more occasions, at the redemption prices (expressed as percentages of principal amount) set forth in the Optional Redemption Schedule, plus accrued and unpaid interest thereon, if any, if redeemed during the twelve month period beginning on the first scheduled redemption date and at reduced scheduled redemption prices during the twelve or eighteen-month periods beginning on the anniversaries of the first scheduled redemption date.

In addition, at any time prior to the first scheduled redemption date, the Company may redeem all or a part of the senior notes at a redemption price equal to 100% of the principal amount of senior notes redeemed plus the applicable premium (the "Applicable Premium") and accrued and unpaid interest, subject to the rights of the holders of record of the senior notes on the relevant record date to receive interest due on the relevant interest payment date. The Applicable Premium means the greater of:


(1)	1.0% of the principal amount of the 2024 Euro Senior Notes;


(2)	the excess of:

(a)the present value at such redemption date of (i) the redemption price of the 2024 Euro Senior Notes at the first scheduled redemption date, plus (ii) all required interest payments due on the 2024 Euro Senior Notes through the first scheduled redemption date computed using a discount rate equal to the treasury rate as of such redemption date plus 50 basis points; over

(b)the principal amount of the 2024 Euro Senior Notes.

Maturities of Debt Instruments

The following table sets forth maturities of the Company's debt, including mortgage and loans payable, and senior notes, gross of debt issuance costs, debt discounts and debt premiums, as of June 30, 2018 (in thousands):



Years ending:
2018 (6 months remaining)	$	37,797
2019	375,349
2020	375,281
2021	540,715
2022	1,569,311
Thereafter	7,064,282
Total	$	9,962,735

Fair Value of Debt Instruments

The following table sets forth the estimated fair values of the Company's mortgage and loans payable and senior notes, including current maturities, as of (in thousands):



	June 30, 2018		December 31, 2017
Mortgage and loans payable	$	1,400,259	$	1,464,877
Senior notes	8,485,647		7,288,673

The fair value of the mortgage and loans payable, which were not publicly traded, was estimated by considering the Company's credit rating, current rates available to the Company for debt of the same remaining maturities and terms of the debt (Level 2). The fair value of the senior notes, which were traded in the public debt market, was based on quoted market prices (Level 1).

Interest Charges

The following table sets forth total interest costs incurred and total interest costs capitalized for the periods presented (in thousands):



	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Interest expense	$	134,673	$	119,042	$	260,950	$	230,726
Interest capitalized	3,484		7,999		6,798		14,399
Interest charges incurred	$	138,157	$	127,041	$	267,748	$	245,125

Total interest paid, net of capitalized interest, during the three months ended June 30, 2018 and 2017 was $111.6 million and $90.0 million, respectively. Total interest paid, net of capitalized interest, during the six months ended June 30, 2018 and 2017 was $215.3 million and $199.0 million, respectively.