Debt, net of unamortized original issue discounts or premiums, and unamortized debt issuance costs, consists of the following:



	June 30, 2017			December 31, 2016
Accounts Receivable Securitization Facility expiring 2017 (1)	$	615		$	568
$2.5 billion ABL Facility expiring 2021 (2)	1,763			1,645
7 ⁵/₈ percent Senior Notes due 2022 (3)	223			469
6 ¹/₈ percent Senior Notes due 2023	935			936
4 ⁵/₈ percent Senior Secured Notes due 2023	991			991
5 ³/₄ percent Senior Notes due 2024	840			839
5 ¹/₂ percent Senior Notes due 2025	793			792
5 ⁷/₈ percent Senior Notes due 2026 (4)	998			740
5 ¹/₂ percent Senior Notes due 2027 (5)	990			739
Capital leases	67			71
Total debt	8,215			7,790
Less short-term portion (6)	(644		)	(597		)
Total long-term debt	$	7,571		$	7,193

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(1)

At June 30, 2017, $10 was available under our accounts receivable securitization facility. The interest rate applicable to the accounts receivable securitization facility was 1.9 percent at June 30, 2017. During the six months ended June 30, 2017, the monthly average amount outstanding under the accounts receivable securitization facility was $557, and the weighted-average interest rate thereon was 1.7 percent. The maximum month-end amount outstanding under the accounts receivable securitization facility during the six months ended June 30, 2017 was $616. Borrowings under the accounts receivable securitization facility are permitted only to the extent that the face amount of the receivables in the collateral pool, net of applicable reserves and other deductions, exceeds the outstanding loans. As of June 30, 2017, there were $694 of receivables, net of applicable reserves and other deductions, in the collateral pool.

(2)

At June 30, 2017, $0.7 billion was available under our ABL facility, net of $40 of letters of credit. The interest rate applicable to the ABL facility was 2.7 percent at June 30, 2017. During the six months ended June 30, 2017, the monthly average amount outstanding under the ABL facility was $1.2 billion, and the weighted-average interest rate thereon was 2.5 percent. The maximum month-end amount outstanding under the ABL facility during the six months ended June 30, 2017 was $1.8 billion. As discussed below, pending the payment of the purchase price for the NES acquisition discussed in note 2 to the condensed consolidated financial statements, the net proceeds from debt issued in February 2017 were used to reduce borrowings under the ABL facility. Following the closing of the NES acquisition on April 3, 2017, we used borrowings under the ABL facility to partially fund the NES acquisition.


(3)	In June 2017, we redeemed $250 principal amount of our 7⁵/₈ percent Senior Notes. Upon redemption, we recognized a loss of $12 in interest expense, net. The loss represented the difference between the net carrying amount and the total purchase price of the redeemed notes.

(4)

In February 2017, URNA issued $250 principal amount of 5 ⁷/₈ percent Senior Notes as an add-on to our existing 5 ⁷/₈ percent Senior Notes. The net proceeds from the issuance were $258 (including the original issue premium and after deducting offering expenses). Pending the payment of the purchase price for the NES acquisition, the net proceeds from the issuance were used to reduce borrowings under the ABL facility. The acquisition closed on April 3, 2017. Upon closing of the NES acquisition, we used available cash and borrowings under the ABL facility to finance the NES acquisition. After the February 2017 issuance, the aggregate principal amount of outstanding 5 ⁷/₈ percent Senior Notes was $1.0 billion. The newly issued notes have identical terms, and are fungible, with the 5 ⁷/₈ percent Senior Notes outstanding at December 31, 2016. The carrying value of the 5 ⁷/₈ percent Senior Notes includes the $11 unamortized portion of the original issue premium recognized in conjunction with the February 2017 issuance, which is being amortized through the maturity date in 2026. The effective interest rate on the 5 ⁷/₈ percent Senior Notes is 5.7 percent.

(5)

In February 2017, URNA issued $250 principal amount of 5 ¹/₂ percent Senior Notes due 2027 (the "2027 5 ¹/₂ percent Senior Notes") as an add-on to our existing 2027 5 ¹/₂ percent Senior Notes. The net proceeds from the issuance were $250 (including the original issue premium and after deducting offering expenses). Pending the payment of the purchase price for the NES acquisition, the net proceeds from the issuance were used to reduce borrowings under the ABL facility. Upon closing of the NES acquisition, we used available cash and borrowings under the ABL facility to finance the NES acquisition. After the February 2017 issuance, the aggregate principal amount of outstanding 2027 5 ¹/₂ percent Senior Notes was $1.0 billion. The newly issued notes have identical terms, and are fungible, with the 2027 5 ¹/₂ percent Senior Notes outstanding at December 31, 2016. The carrying value of the 2027 5 ¹/₂ percent Senior Notes includes the $3 unamortized portion of the original issue premium recognized in conjunction with the February 2017 issuance, which is being amortized through the maturity date in 2027. The effective interest rate on the 2027 5 ¹/₂ percent Senior Notes is 5.5 percent.


(6)	As of June 30, 2017, our short-term debt primarily reflects $615 of borrowings under our accounts receivable securitization facility.