4.	Long-Term Debt

	March 31,			December 31,			March 31,
	2018			2017			2017
	(Dollars in Thousands)
6.60% Senior Notes, due 2018	$	299,967		$	299,871		$	299,579
7% Debentures, due 2025		124,203			124,180			124,112
6.25% Senior Notes, due 2037		228,048			228,033			227,989
4.25% Senior Notes, due 2024		395,959			395,814			395,392
4.250% Senior Notes, due 2047		591,416			591,688			—
3.500% Senior Notes, due 2027		494,402			494,352			—
3.450% Senior Notes, due 2027		296,705			296,628			—
Floating Rate Senior Notes, due 2019, interest rate of 2.70% and 2.13% at March 31, 2018 and December 31, 2017, respectively		298,704			298,102			—
Floating Rate Notes, due 2020, interest rate of 2.55% and 2.10% at March 31, 2018 and December 31, 2017, respectively		298,408			298,227			—
Floating Rate Notes, due 2017, interest rate of 2.10% at March 31, 2017		—			—			298,878
Revolving Facility, due 2022, interest rate of 1.89% at March 31, 2017		—			—			210,000
Trade Receivable Facility, interest rate of 1.51% at March 31, 2017		—			—			290,000
Other notes		296			308			344
Total debt		3,028,108			3,027,203			1,846,294
Less: Current maturities of long-term debt and short-term facilities		(300,006	)		(299,909	)		(290,048	)
Long-term debt	$	2,728,102		$	2,727,294		$	1,556,246

The Company, through a wholly-owned special-purpose subsidiary, has a $300,000,000 trade receivable securitization facility (the Trade Receivable Facility) that is scheduled to mature September 26, 2018. The Trade Receivable Facility, with SunTrust Bank, Regions Bank, PNC Bank, N.A., The Bank of Tokyo-Mitsubishi UFJ, LTD., New York Branch, and certain other lenders that may become a party to the facility from time to time, is backed by eligible trade receivables, as defined, and is limited to the lesser of the facility limit or the borrowing base, as defined, of $349,283,000, $338,784,000 and $362,693,000 at March 31, 2018, December 31, 2017 and March 31, 2017, respectively. These receivables are originated by the Company and then sold to the wholly-owned special-purpose subsidiary by the Company. The Company continues to be responsible for the servicing and administration of the receivables purchased by the wholly-owned special-purpose subsidiary. Borrowings under the Trade Receivable Facility bear interest at a rate equal to one-month London Inter-bank Offered Rate, or LIBOR, plus 0.725%, subject to change in the event that this rate no longer reflects the lender’s cost of lending. The Trade Receivable Facility contains a cross-default provision to the Company’s other debt agreements.

4.	Long-Term Debt (continued)

The Company has a $700,000,000 five-year senior unsecured revolving facility (the Revolving Facility) with JPMorgan Chase Bank, N.A., as Administrative Agent, Branch Banking and Trust Company (BB&T), Deutsche Bank Securities, Inc., SunTrust Bank and Wells Fargo Bank, N.A., as Co-Syndication Agents, and the lenders party thereto. The Revolving Facility requires the Company’s ratio of consolidated debt-to-consolidated earnings before interest, taxes, depreciation and amortization (EBITDA), as defined by the Revolving Facility, for the trailing-twelve months (the Ratio) to not exceed 3.50x as of the end of any fiscal quarter, provided that the Company may exclude from the Ratio debt incurred in connection with certain acquisitions during such quarter or the three preceding quarters so long as the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the Trade Receivable Facility, consolidated debt, including debt for which the Company is a co-borrower, may be reduced by the Company’s unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation. The Company was in compliance with this Ratio at March 31, 2018.

Available borrowings under the Revolving Facility are reduced by any outstanding letters of credit issued by the Company under the Revolving Facility. The Company had $2,301,000 of outstanding letters of credit issued under the Revolving Facility at March 31, 2018 and December 31, 2017 and $2,507,000 at March 31, 2017.

Accumulated other comprehensive loss includes the unamortized value of terminated forward starting interest rate swap agreements. For the three-months ended March 31, 2018 and 2017, the Company recognized $347,000 and $356,000, respectively, as additional interest expense. The amortization of the terminated value of the forward starting interest rate swap agreements will be complete with the maturity of the related debt in April 2018.