Debt

9 Months Ended

Sep. 30, 2019

Our obligations under debt arrangements consisted of the following:



	September 30, 2019						December 31, 2018
	Principal		Unamortized Discount and Debt Issuance Costs ⁽¹⁾		Net Value		Principal		Unamortized Discount and Debt Issuance Costs ⁽¹⁾		Net Value
Senior secured credit facility	$	947,000	$	—	$	947,000	$	970,100	$	—	$	970,100
6.750% senior unsecured notes	750,000		10,213		739,787		750,000		12,763		737,237
6.000% senior unsecured notes	400,000		3,824		396,176		400,000		4,624		395,376
5.625% senior unsecured notes	350,000		4,147		345,853		350,000		4,820		345,180
6.500% senior unsecured notes	550,000		7,325		542,675		550,000		8,241		541,759
6.250% senior unsecured notes	450,000		6,458		443,542		450,000		7,189		442,811
Total long-term debt	$	3,447,000	$	31,967	$	3,415,033	$	3,470,100	$	37,637	$	3,432,463


(1)	Unamortized debt issuance costs associated with our senior secured credit facility (included in Other Long Term Assets on the Unaudited Condensed Consolidated Balance Sheet) were $8.4 million and $10.8 million as of September 30, 2019 and December 31, 2018, respectively.

As of September 30, 2019, we were in compliance with the financial covenants contained in our credit agreement and senior unsecured notes indentures.

Senior Secured Credit Facility

The key terms for rates under our $1.7 billion senior secured credit facility, which are dependent on our leverage ratio (as defined in the credit agreement), are as follows:

•The interest rate on borrowings may be based on an alternate base rate or a Eurodollar rate, at our option. The alternate base rate is equal to the sum of (a) the greatest of (i) the prime rate as established by the administrative agent for the credit facility, (ii) the federal funds effective rate plus 0.5% of 1% and (iii) the LIBOR rate for a one-month maturity plus 1% and (b) the applicable margin. The Eurodollar rate is equal to the sum of (a) the LIBOR rate for the applicable interest period multiplied by the statutory reserve rate and (b) the applicable margin. The applicable margin varies from 1.50% to 3.00% on Eurodollar borrowings and from 0.50% to 2.00% on alternate base rate borrowings, depending on our leverage ratio. Our leverage ratio is recalculated quarterly and in connection with each material acquisition. At September 30, 2019, the applicable margins on our borrowings were 1.50% for alternate base rate borrowings and 2.50% for Eurodollar rate borrowings.

•Letter of credit fee rates range from 1.50% to 3.00% based on our leverage ratio as computed under the credit facility. The rate can fluctuate quarterly. At September 30, 2019, our letter of credit rate was 2.50%.

•We pay a commitment fee on the unused portion of the $1.7 billion maximum facility amount. The commitment fee rates on the unused committed amount will range from 0.25% to 0.50% per annum depending on our leverage ratio. At September 30, 2019, our commitment fee rate on the unused committed amount was 0.50%.

•The accordion feature is $300.0 million, giving us the ability to expand the size of the facility to up to $2.0 billion for acquisitions or growth projects, subject to lender consent.

At September 30, 2019, we had $947.0 million borrowed under our $1.7 billion credit facility, with $12.6 million of the borrowed amount designated as a loan under the inventory sublimit. Our credit agreement allows up to $100.0 million of the capacity to be used for letters of credit, of which $1.1 million was outstanding at September 30, 2019. Due to the revolving nature of loans under our credit facility, additional borrowings and periodic repayments and re-borrowings may be made until the maturity date. The total amount available for borrowings under our credit facility at September 30, 2019 was $751.9 million.

Senior Unsecured Note Extinguishment

We incurred a total loss of approximately $3.3 million (including the write-off of the related unamortized debt issuance costs) relating to the extinguishment of our 2021 senior unsecured notes, which is recorded as "Other expense" in our Consolidated Statements of Operations for the nine months ended September 30, 2018.