Total debt as of December 31 consisted of the following:



(In millions)	December 31, 2014		December 31, 2013
7.500% debentures due 2015	$	48.7	$	48.7
Revolving credit facility due 2018	45.0		—
7.375% senior notes due 2020	316.6		316.6
5.250% senior notes due 2023	600.0		600.0
Other debt	13.5		23.6
Total debt	$	1,023.8	$	988.9
Less short-term and current portion of long-term debt	61.8		12.7
Total long-term debt, net of current portion	$	962.0	$	976.2

During the first quarter of 2014, we repaid an $8.0 million industrial revenue bond that was assumed as a result of the Spartech acquisition.

In 2013, we repurchased $43.4 million aggregate principal amount of our 7.375% senior notes due 2020, $1.3 million aggregate principal amount of our 7.50% debentures due 2015 and $1.6 million of other debt. Additionally, we recognized $5.2 million of debt extinguishment costs within Debt extinguishment costs in our Consolidated Statements of Income in connection with these repurchases.

On February 28, 2013, PolyOne issued $600.0 million aggregate principal amount of senior notes, which mature on March 15, 2023. The senior notes bear an interest rate of 5.25% per year, payable semi-annually, in arrears, on March 15 and September 15 of each year, which commenced on September 15, 2013. We used a portion of the net proceeds of the offering to pay the cash portion of the Spartech acquisition, and to repay certain Spartech debt, including the $88.9 million aggregate principal amount of its senior notes due 2016 and related interest and make-whole payments totaling $13.4 million and all outstanding amounts under its revolving credit facility. We also used a portion of these net proceeds to make a voluntary $50.0 million contribution to our U.S. qualified defined benefit plan and to repay the outstanding principal amount of $297.0 million under our senior secured term loan. We incurred debt extinguishment costs of $10.6 million related to the early retirement of our senior secured term loan, including $8.2 million of deferred financing cost write-offs and $2.4 million of discounts that were written off. These costs are presented within Debt extinguishment costs in our Consolidated Statements of Income.

On March 1, 2013, the agreement, dated December 21, 2011, governing our $300.0 million five-year senior secured revolving credit facility was amended and restated. The amendment and restatement resulted in an increase in commitments of $100.0 million for a maximum borrowing facility size of $400.0 million, subject to a borrowing base with advances against certain U.S. and Canadian accounts receivable and inventory. We have the option to increase the availability under the facility to $450.0 million, subject to meeting certain requirements and obtaining commitments for such increase. In connection with the amendment and restatement, we also extended the maturity date to March 1, 2018. As of December 31, 2014, we were in compliance with all covenants and there were $45.0 million of outstanding borrowings under our asset-backed revolving credit facility, which had remaining availability of $233.7 million.

The Company maintains a credit line with Saudi Hollandi Bank for $16.0 million, with an interest rate equal to the Saudi Arabia Interbank Offered Rate plus a fixed rate of 0.85%. The credit line is being used to fund capital expenditures related to the manufacturing facility in Jeddah, Saudi Arabia and is subject to an annual renewal. As of December 31, 2014, letters of credit under the credit line were $0.2 million and borrowings were $13.1 million with an interest rate of 1.85%. As of December 31, 2013, letters of credit under the credit line were $0.3 million and borrowings were $12.3 million with an interest rate of 1.85%. As of December 31, 2014 and 2013, there was remaining availability on the credit line of $2.7 million and $3.4 million, respectively.

During 2013, we incurred $13.0 million in debt financing related fees. These costs are included in Other current and Other non-current assets and are being amortized over the life of their respective agreements.

Aggregate maturities of debt for the next five years and thereafter are as follows:



(In millions)
2015	$	61.8
2016 & 2017	—
2018	45.1
2019	0.1
Thereafter	916.8
Aggregate maturities	$	1,023.8

Included in Interest expense, net for the years ended December 31, 2014, 2013 and 2012 was interest income of $1.1 million, $1.3 million and $0.8 million, respectively. Total interest paid on debt was $59.8 million in 2014, $50.4 million in 2013 and $45.8 million in 2012.