LONG-TERM DEBT AND LINES OF CREDIT

As of March 31, 2019 and December 31, 2018, long-term debt consisted of the following:



	March 31, 2019		December 31, 2018

	(in thousands)

Credit Facility:
Term loans (face amounts of $4,441,578 and $4,463,643 at March 31, 2019 and December 31, 2018, respectively, less unamortized debt issuance costs of $35,182 and $37,400 at March 31, 2019 and December 31, 2018, respectively)	$	4,406,396	$	4,426,243
Revolving Credit Facility	897,000		704,000
Total long-term debt	5,303,396		5,130,243
Less current portion of Credit Facility (face amounts of $142,044 and $124,176 at March 31, 2019 and December 31, 2018, respectively, less unamortized debt issuance costs of $9,086 and $9,101 at March 31, 2019 and December 31, 2018, respectively, and the current portion of capital lease obligations of $62)	133,019		115,075
Long-term debt, excluding current portion	$	5,170,377	$	5,015,168

Maturity requirements on long-term debt as of March 31, 2019 by year are as follows (in thousands):



Year ending December 31,
2019	$	102,111
2020	159,979
2021	195,848
2022	267,587
2023	4,138,053
2024 and thereafter	475,000
Total	$	5,338,578

Credit Facility

We are party to a credit facility agreement with Bank of America, N.A., as administrative agent, and a syndicate of financial institutions as lenders and other agents (as amended from time to time, the "Credit Facility"). As of March 31, 2019, the Credit Facility provided for secured financing comprised of (i) a $1.5 billion revolving credit facility ("Revolving Credit Facility"); (ii) a $1.5 billion term loan ("Term A Loan"), (iii) a $1.37 billion term loan ("Term A-2 Loan"), (iv) a $1.14 billion term loan ("Term B-2 Loan"); and (v) a $500 million term loan ("Term B-4 Loan"). Substantially all of the assets of our domestic subsidiaries are pledged as collateral under the Credit Facility. The total available commitments under the Revolving Credit Facility at March 31, 2019 were $590.5 million.

The Credit Facility provides for an interest rate, at our election, of either London Interbank Offered Rate or a base rate, in each case plus a margin. As of March 31, 2019, the interest rates on the Term A Loan, the Term A-2 Loan, the Term B-2 Loan and the Term B-4 Loan were 4.00%, 4.00%, 4.25% and 4.25%, respectively. As of March 31, 2019, the interest rate on the Revolving Credit Facility was 3.91%. In addition, we are required to pay a quarterly commitment fee with respect to the unused portion of the Revolving Credit Facility at an applicable rate per annum ranging from 0.20% to 0.30% depending on our leverage ratio.

The Term A Loan and the Term A-2 Loan mature, and the Revolving Credit Facility expires, on January 20, 2023. The Term B-2 Loan matures on April 22, 2023. The Term B-4 Loan matures on October 18, 2025. The Term A Loan and Term A-2 Loan principal amounts must each be repaid in quarterly installments in the amount of 0.625% of principal through June 2019, increasing to 1.25% of principal through June 2021, increasing to 1.875% of principal through June 2022 and increasing to 2.50% of principal through December 2022, with the remaining principal balance due upon maturity in January 2023. The Term B-2 Loan principal must be repaid in quarterly installments in the amount of 0.25% of principal through March 2023, with the remaining principal balance due upon maturity in April 2023. The Term B-4 Loan principal must be repaid in quarterly installments in the amount of 0.25% of principal through September 2025, with the remaining principal balance due upon maturity in October 2025.

We may issue standby letters of credit of up to $100 million in the aggregate under the Revolving Credit Facility. Outstanding letters of credit under the Revolving Credit Facility reduce the amount of borrowings available to us. Borrowings available to us under the Revolving Credit Facility are further limited by the covenants described below under "Compliance with Covenants."

The portion of deferred debt issuance costs related to the Revolving Credit Facility is included in other noncurrent assets, and the portion of deferred debt issuance costs related to the term loans is reported as a reduction to the carrying amount of the term loans. Debt issuance costs are amortized as an adjustment to interest expense over the terms of the respective facilities.

Settlement Lines of Credit

In various markets where we do business, we have specialized lines of credit, which are restricted for use in funding settlement. The settlement lines of credit generally have variable interest rates, are subject to annual review and are denominated in local currency but may, in some cases, facilitate borrowings in multiple currencies. For certain of our lines of credit, the available credit is increased by the amount of cash we have on deposit in specific accounts with the lender. Accordingly, the amount of the outstanding line of credit may exceed the stated credit limit. As of March 31, 2019 and December 31, 2018, a total of $69.0 million and $70.6 million, respectively, of cash on deposit was used to determine the available credit.

As of March 31, 2019 and December 31, 2018, respectively, we had $641.9 million and $700.5 million outstanding under these lines of credit with additional capacity of $725.2 million as of March 31, 2019 to fund settlement. The weighted-average interest rate on these borrowings was 2.57% and 2.97% at March 31, 2019 and December 31, 2018, respectively. During the three months ended March 31, 2019, the maximum and average outstanding balances under these lines of credit were $685.4 million and $390.0 million, respectively.

Compliance with Covenants

The Credit Facility Agreement contains customary affirmative and restrictive covenants, including, among others, financial covenants based on our leverage and interest coverage ratios, as defined in the agreement. As of March 31, 2019, financial covenants under the Credit Facility Agreement required a leverage ratio no greater than: (i) 5.00 to 1.00 as of the end of any fiscal quarter ending during the period from April 1, 2018 through June 30, 2019; (ii) 4.75 to 1.00 as of the end of any fiscal quarter ending during the period from July 1, 2019 through June 30, 2020; and (iii) 4.50 to 1.00 as of the end of any fiscal quarter ending thereafter. The interest coverage ratio is required to be no less than 3.25 to 1.00.

The Credit Facility Agreement includes covenants, subject in each case to exceptions and qualifications that may restrict certain payments, including in certain circumstances, the repurchasing of our common stock and paying cash dividends in excess of our current rate of $0.01 per share per quarter. We were in compliance with all applicable covenants as of March 31, 2019.

Interest Rate Swap Agreements

We have interest rate swap agreements with financial institutions to hedge changes in cash flows attributable to interest rate risk on a portion of our variable-rate debt instruments. Net amounts to be received or paid under the swap agreements are reflected as adjustments to interest expense. Since we have designated the interest rate swap agreements as portfolio cash flow hedges, unrealized gains or losses resulting from adjusting the swaps to fair value are recorded as components of other comprehensive income. The fair values of the interest rate swaps were determined based on the present value of the estimated future net cash flows using implied rates in the applicable yield curve as of the valuation date. These derivative instruments were classified within Level 2 of the valuation hierarchy.

The table below presents the fair values of our derivative financial instruments designated as cash flow hedges included in the consolidated balance sheets:



				Fair Values
Derivative Financial Instruments	Balance Sheet Location	Weighted-Average Fixed Rate of Interest at March 31, 2019	Range of Maturity Dates at March 31, 2019	March 31, 2019		December 31, 2018

				(in thousands)

Interest rate swaps (Notional of $250 million at March 31, 2019 and $750 million at December 31, 2018)	Prepaid expenses and other current assets	1.58%	December 31, 2019	$	1,602	$	3,200
Interest rate swaps (Notional of $550 million at March 31, 2019 and December 31, 2018)	Other noncurrent assets	1.65%	July 31, 2020 - March 31, 2021	$	5,248	$	8,256
Interest rate swaps (Notional of $1,250 million at March 31, 2019 and $950 million at December 31, 2018)	Accounts payable and accrued liabilities	2.73%	December 31, 2022	$	26,333	$	14,601

The table below presents the effects of our interest rate swaps on the consolidated statements of income and comprehensive income for the three months ended March 31, 2019 and 2018:



	Three Months Ended
	March 31, 2019			March 31, 2018

	(in thousands)

Amount of net unrealized (losses) gains recognized in other comprehensive income (loss)	$	(14,509	)	$	7,682
Amount of net unrealized gains reclassified out of other comprehensive income (loss) to interest expense	$	(1,830	)	$	(169	)

As of March 31, 2019, the amount of net unrealized gains in accumulated other comprehensive loss related to our interest rate swaps that is expected to be reclassified into interest expense during the next 12 months was approximately $1.3 million.

Interest Expense

Interest expense was approximately $55.4 million and $45.5 million for the three months ended March 31, 2019 and 2018, respectively.