Debt

Short-term borrowings, including current portion of long-term debt, consists of the following:



	June 30, 2018		December 31, 2017
3.00% notes, due 2018	$	—	$	299,857
Borrowings on lines of credit	70,000		—
Other short-term borrowings	44,908		56,949
	$	114,908	$	356,806

Other short-term borrowings are primarily utilized to support working capital requirements. The weighted-average interest rate on these borrowings was 2.3% and 2.6% at June 30, 2018 and December 31, 2017, respectively.

Long-term debt consists of the following:



	June 30, 2018		December 31, 2017
Revolving credit facility	$	57,700	$	—
Asset securitization program	1,200,000		490,000
6.00% notes, due 2020	209,059		208,971
5.125% notes, due 2021	130,473		130,400
3.50% notes, due 2022	346,899		346,518
4.50% notes, due 2023	297,369		297,122
3.25% notes, due 2024	493,618		493,161
4.00% notes, due 2025	345,469		345,182
7.50% senior debentures, due 2027	109,735		109,694
3.875% notes, due 2028	493,826		493,563
Other obligations with various interest rates and due dates	6,179		18,434
	$	3,690,327	$	2,933,045

The 7.50% senior debentures are not redeemable prior to their maturity. All other notes may be called at the option of the company subject to "make whole" clauses.

The estimated fair market value, using quoted market prices, is as follows:



	June 30, 2018		December 31, 2017
3.00% notes, due 2018	$	—	$	300,500
6.00% notes, due 2020	218,000		224,000
5.125% notes, due 2021	135,500		139,000
3.50% notes, due 2022	345,500		355,000
4.50% notes, due 2023	304,500		315,500
3.25% notes, due 2024	468,000		491,000
4.00% notes, due 2025	342,500		356,500
7.50% senior debentures, due 2027	131,500		138,500
3.875% notes, due 2028	473,500		501,000

The carrying amount of the company's short-term borrowings in various countries, revolving credit facility, asset securitization program, commercial paper, and other obligations approximate their fair value.

The company has a $1,800,000 revolving credit facility maturing in December 2021. This facility may be used by the company for general corporate purposes including working capital in the ordinary course of business, letters of credit, repayment, prepayment or purchase of long-term indebtedness, acquisitions, and as support for the company's commercial paper program, as applicable. Interest on borrowings under the revolving credit facility is calculated using a base rate or a euro currency rate plus a spread (1.18% at June 30, 2018), which is based on the company's credit ratings, or an effective interest rate of 2.41% at June 30, 2018. The facility fee, which is based on the company's credit ratings, was .20% of the total borrowing capacity at June 30, 2018. The company had $57,700 in outstanding borrowings under the revolving credit facility at June 30, 2018. The company had no outstanding borrowings under the revolving credit facility at December 31, 2017.

The company has a commercial paper program and the maximum aggregate balance of commercial paper outstanding may not exceed the borrowing capacity of $1,200,000. The company had no outstanding borrowings under this program at June 30, 2018 and December 31, 2017. The program had an effective interest rate of 2.56% for the second quarter of 2018.

The company has an asset securitization program collateralized by accounts receivable of certain of its subsidiaries. In June 2018, the company amended its asset securitization program and, among other things, increased its borrowing capacity from $910,000 to $1,200,000 and extended its term to mature to June 2021. The asset securitization program is conducted through Arrow Electronics Funding Corporation ("AFC"), a wholly-owned, bankruptcy remote subsidiary. The asset securitization program does not qualify for true sale treatment. Accordingly, the accounts receivable and related debt obligation remain on the company's consolidated balance sheets. Interest on borrowings is calculated using a base rate plus a spread (.40% at June 30, 2018), or an effective interest rate of 2.57% at June 30, 2018. The facility fee is .40% of the total borrowing capacity.

At June 30, 2018 and December 31, 2017, the company had $1,200,000 and $490,000, respectively, in outstanding borrowings under the asset securitization program, which was included in "Long-term debt" in the company's consolidated balance sheets. Total collateralized accounts receivable of approximately $2,525,100 and $2,270,500, respectively, were held by AFC and were included in "Accounts receivable, net" in the company's consolidated balance sheets. Any accounts receivable held by AFC would likely not be available to other creditors of the company in the event of bankruptcy or insolvency proceedings before repayment of any outstanding borrowings under the asset securitization program.

Both the revolving credit facility and asset securitization program include terms and conditions that limit the incurrence of additional borrowings and require that certain financial ratios be maintained at designated levels. The company was in compliance with all covenants as of June 30, 2018 and is currently not aware of any events that would cause non-compliance with any covenants in the future.

The company has $200,000 in uncommitted lines of credit. There were $70,000 of outstanding borrowings under the uncommitted lines of credit at June 30, 2018 and no outstanding borrowings at December 31, 2017. These borrowings were provided on a short-term basis and the maturity is agreed upon between the company and the lender. The lines had an effective interest rate of 2.79% at June 30, 2018.

During March 2018, the company redeemed $300,000 principal amount of its 3.00% notes due March 2018.

During June 2017, the company completed the sale of $500,000 principal amount of 3.875% notes due in 2028. The net proceeds of the offering of $494,625 were used to redeem the company's 6.875% senior debenture due June 2018 and refinance a portion of the company’s 6.00% notes due April 2020, 5.125% notes due March 2021, and 7.50% notes due January 2027. The company recorded a loss on extinguishment of debt of $58,759 for the first six months of 2017.

During September 2017, the company completed the sale of $500,000 principal amount of 3.25% notes due in 2024. The net proceeds of the offering of $493,810 were used to redeem the company's debt obligations and for general corporate purposes.

Interest and other financing expense, net, includes interest and dividend income of $11,303 and $20,557 for the second quarter and first six months of 2018, respectively. Interest and other financing expense, net, includes interest and dividend income of $7,084 and $15,010 for the second quarter and first six months of 2017, respectively.