Long-Term Debt

The Company’s long-term debt, net of discounts and debt issuance costs, consisted of the following at December 31:



(In millions)	2015			2014
Term loan	$	628		$	808
Revolving credit facility	379			42
3.125% senior notes due 2015	—			300
3.125% senior notes due 2016	—			599
6.8% senior notes due 2017	—			498
2.7% senior notes due 2020	843			—
4.625% senior notes due 2020	448			447
4.75% senior notes due 2021	397			397
3.5% senior notes due 2022	694			693
3.85% senior notes due 2025	893			—
Other borrowings	11			6
Total debt	4,293			3,790
Less: current maturities	(5		)	(92		)
Long-term debt	$	4,288		$	3,698

The estimated fair value of total debt was $4.3 billion and $3.9 billion at December 31, 2015 and 2014, respectively. The Company was in compliance with all financial debt covenants during 2015. Annual maturities of the Company’s total debt were as follows at December 31, 2015:



(In millions)
Year ending December 31,
2016	$	5
2017	94
2018	539
2019	1
2020	1,670
Thereafter	1,984
Total	$	4,293

Revolving Credit Facility

In April 2015, the Company entered into an amended and restated revolving credit agreement that restated its existing $2.0 billion revolving credit agreement with a syndicate of banks and extended its maturity from October 2018 to April 2020. The amended and restated credit agreement also provided that the Company's subsidiaries that were guaranteeing its obligations under the revolving credit facility were released from their respective guarantees. Borrowings under the amended revolving credit facility continue to bear interest at a variable rate based on LIBOR or on a base rate, plus a specified margin based on the Company's long-term debt rating in effect from time to time. The variable interest rate on the revolving credit facility borrowings was 1.49% at December 31, 2015. There are no significant commitment fees and no compensating balance requirements. The amended revolving credit facility contains various restrictions and covenants that are substantially similar to those under the Company's previously existing credit agreement and require the Company, among other things, to: (i) limit its consolidated indebtedness as of the end of each fiscal quarter to no more than three and one-half times consolidated net earnings before interest, taxes, depreciation and amortization and certain other adjustments during the period of four fiscal quarters then ended, and (ii) maintain consolidated net earnings before interest, taxes, depreciation and amortization and certain other adjustments of at least three times consolidated interest expense as of the end of each fiscal quarter for the period of four fiscal quarters then ended.

Term Loan

The Company maintains a term loan with a syndicate of banks that matures in October 2018 and bears interest at a variable rate based on LIBOR or on a base rate, plus a specified margin based on the Company’s long-term debt rating in effect from time to time. The variable interest rate on the term loan borrowings was 1.67% at December 31, 2015. A remaining scheduled principal payment of $90 million is due on December 31, 2017, with the outstanding principal balance of $540 million due at maturity. The term loan facility contains various restrictions and covenants substantially similar to those contained in the revolving credit facility described above. In April 2015, the Company entered into an amendment to its term loan facility to conform certain of its terms to those in the amended and restated credit agreement, including providing that the Company's subsidiaries that were guaranteeing its obligations under the term loan facility were released from their respective guarantees.

Senior Notes

In May 2015, the Company completed an offering of $1.75 billion of senior notes comprised of $850 million aggregate principal amount of 2.7% senior notes due in June 2020 and $900 million aggregate principal amount of 3.85% senior notes due in June 2025. The notes pay interest at the stated rates semi-annually on June 1 and December 1, which commenced on December 1, 2015. The Company’s 4.625% senior notes due in October 2020 and 3.5% senior notes due in October 2022 pay interest at the stated rates on April 1 and October 1 of each year. The Company’s 4.75% senior notes due in June 2021 pay interest at the stated rate on June 15 and December 15 of each year. The interest rates applicable to the senior notes are subject to an increase of up to two percent in the event that the Company’s credit rating is downgraded below investment grade. The indentures governing the senior notes contain covenants that, among other matters, limit (i) the Company’s ability to consolidate or merge into, or convey, transfer or lease all or substantially all of its properties and assets to, another person; (ii) the Company’s and certain of its subsidiaries’ ability to create or assume liens, and (iii) the Company’s and certain of its subsidiaries’ ability to engage in sale and leaseback transactions. At December 31, 2014, the Company’s $300 million aggregate principal amount of 3.125% senior notes due in October 2015 were classified in the consolidated balance sheet as long-term as the Company had the intent to refinance this debt on a long-term basis and the ability to do so under its amended and restated revolving credit facility. In October 2015, the Company used its available borrowings under the amended and restated revolving credit facility to repay the $300 million aggregate principal amount of 3.125% senior notes.

In May 2015, the Company used the net proceeds from the offering described above to redeem its $600 million aggregate principal amount of 3.125% senior notes due in June 2016 and $500 million aggregate principal amount of 6.8% senior notes due in November 2017. The Company recorded a pre-tax loss on early debt extinguishment of $85 million related to make-whole payments and other costs associated with this redemption. In addition, the Company paid scheduled December 2015 and December 2016 principal payments on the term loan totaling $180 million and repaid, at that time, outstanding borrowings under the amended and restated revolving credit facility. The remaining net proceeds from the offering were used for general corporate purposes.

In April 2015, the Company provided notice to the trustee under the indenture and supplemental indentures governing its outstanding senior notes that the subsidiary guarantors of the outstanding senior notes were automatically released from all of their obligations under the supplemental indentures and their respective guarantees.

Debt Issuance Costs

Debt issuance costs are amortized as a component of interest expense over the term of the underlying debt using the effective interest method. Debt issuance costs related to the Company's term loan and senior notes totaled $21 million and $13 million at December 31, 2015 and 2014, respectively, net of accumulated amortization of $20 million and $24 million, respectively, and are reported as a direct reduction of the related debt instrument in the consolidated balance sheets. Debt issuance costs related to the Company's revolving credit facility are reported in other long-term assets in the consolidated balance sheets and totaled $7 million and $6 million at December 31, 2015 and 2014, respectively, net of accumulated amortization of $8 million and $7 million respectively.