11.	Long-Term Debt and Short-Term Borrowings

Total long-term debt and short-term borrowings consist of the following (dollars in thousands):

	December 31,
		2017			2016
Long-Term Debt:
Senior term loans, with interest ranging from 1.77% to 2.51%, due through 2022	$	200,000		$	751,875
5.00% senior notes due in 2023		800,000			800,000
4.875% senior notes due in 2026, net of unamortized discount		596,273			595,912
5.25% senior notes due in 2025, net of unamortized premium		426,317			426,500
Other		8			14
Total long-term debt		2,022,598			2,574,301
Less: current maturities of long-term debt		(8	)		(11	)
Less: unamortized debt issuance costs		(22,987	)		(26,164	)
Total long-term debt, net of current maturities	$	1,999,603		$	2,548,126
Short-Term Borrowings:
Warehouse lines of credit, with interest ranging from 1.70% to 4.31%, due in 2018	$	910,766		$	1,254,653
Other		16			16
Total short-term borrowings	$	910,782		$	1,254,669

Future annual aggregate maturities of total consolidated gross debt (excluding unamortized discount, premium and deferred financing costs) at December 31, 2017 are as follows (dollars in thousands): 2018—$910,790; 2019—$0; 2020—$0; 2021—$0; 2022—$200,000 and $1,825,000 thereafter.

Long-Term Debt

We maintain credit facilities with third-party lenders, which we use for a variety of purposes. On March 28, 2013, CBRE Services, our wholly-owned subsidiary, entered into a credit agreement (2013 Credit Agreement) with a syndicate of banks led by Credit Suisse AG (CS) as administrative and collateral agent, to completely refinance a previous credit agreement. On January 9, 2015, CBRE Services entered into an amended and restated credit agreement (2015 Credit Agreement) with a syndicate of banks jointly led by Merrill Lynch, Pierce, Fenner & Smith Incorporated, J.P. Morgan Securities LLC and CS. In January 2015, we used the proceeds from the tranche A term loan facility under the 2015 Credit Agreement and from the December 2014 issuance of $125.0 million of 5.25% senior notes due 2025, along with cash on hand, to pay off the prior tranche A and tranche B term loans and the balance on our revolving credit facility under the 2013 Credit Agreement. On September 3, 2015, CBRE Services entered into an incremental assumption agreement with a syndicate of banks jointly led by Wells Fargo Securities, LLC and CS to establish new tranche B-1 and tranche B-2 term loan facilities under the 2015 Credit Agreement in an aggregate principal amount of $400.0 million. On March 21, 2016, CBRE Services executed an amendment to the 2015 Credit Agreement that, among other things, extended the maturity on the revolving credit facility to March 2021 and increased the borrowing capacity under the revolving credit facility by $200.0 million. On October 31, 2017, CBRE Services entered into a new Credit Agreement (the 2017 Credit Agreement), which refinanced and replaced the 2015 Credit Agreement. We used $200.0 million of borrowings from the tranche A term loan facility and $83.0 million of revolving credit facility borrowings under the 2017 Credit Agreement, in addition to cash on hand, to repay all amounts outstanding under the 2015 Credit Agreement.

The 2017 Credit Agreement is a senior unsecured credit facility that is jointly and severally guaranteed by us and certain of our subsidiaries. As of December 31, 2017, the 2017 Credit Agreement provided for the following: (1) a $2.8 billion revolving credit facility, which includes the capacity to obtain letters of credit and swingline loans and matures on October 31, 2022 and (2) a $750.0 million delayed draw tranche A term loan facility, requiring quarterly principal payments, which begin on March 5, 2018 and continue through maturity on October 31, 2022, provided that in the event that our leverage ratio (as defined in the 2017 Credit Agreement) is less than or equal to 2.50 to 1.00 on the last day of the fiscal quarter immediately preceding any such payment date, no such quarterly principal payment shall be required on such date.

Borrowings under the term loan facilities under the 2017 Credit Agreement as of December 31, 2017 bear interest, based at our option, on either (1) the applicable fixed rate plus 0.875% to 1.25% or (2) the daily rate plus 0.0% to 0.25%, in each case as determined by reference to our Credit Rating (as defined in the 2017 Credit Agreement). As of December 31, 2017, we had $193.5 million of term loan borrowings outstanding of tranche A term loan facility (at an interest rate of 2.51%), net of unamortized debt issuance costs, under the 2017 Credit Agreement, which was included in the accompanying consolidated balance sheets.

Our 2015 Credit Agreement was an unsecured credit facility that was jointly and severally guaranteed by us and substantially all of our material domestic subsidiaries. Our 2015 Credit Agreement provided for the following: (1) a $2.8 billion revolving credit facility, which included the capacity to obtain letters of credit and swingline loans and had a maturity date of March 21, 2021; (2) a $500.0 million tranche A term loan facility requiring quarterly principal payments, which began on June 30, 2015 and would have continued through maturity on January 9, 2020; (3) a $270.0 million tranche B-1 term loan facility requiring quarterly principal payments, which began on December 31, 2015 and would have continued through maturity on September 3, 2020; and (4) a $130.0 million tranche B-2 term loan facility requiring quarterly principal payments, which began on December 31, 2015 and would have continued through maturity on September 3, 2022. On November 1, 2016, we prepaid a total of $101.9 million of the 2017 and 2018 required amortization on our senior term loans under the 2015 Credit Agreement, which included $59.4 million for the tranche A term loan facility, $28.7 million for the tranche B-1 term loan facility and $13.8 million for the tranche B-2 term loan facility. As of December 31, 2016, we had $744.3 million of term loan borrowings outstanding, net of unamortized debt issuance costs, under the 2015 Credit Agreement (consisting of $404.6 million of tranche A term loan facility, $229.4 million of tranche B-1 term loan facility and $110.3 million of tranche B-2 term loan facility), which was included in the accompanying consolidated balance sheets.

On August 13, 2015, CBRE Services issued $600.0 million in aggregate principal amount of 4.875% senior notes due March 1, 2026 at a price equal to 99.24% of their face value. The 4.875% senior notes are unsecured obligations of CBRE Services, senior to all of its current and future subordinated indebtedness, but effectively subordinated to all of its current and future secured indebtedness. The 4.875% senior notes are jointly and severally guaranteed on a senior basis by us and each domestic subsidiary of CBRE Services that guarantees our 2017 Credit Agreement. Interest accrues at a rate of 4.875% per year and is payable semi-annually in arrears on March 1 and September 1, with the first interest payment made on March 1, 2016. The 4.875% senior notes are redeemable at our option, in whole or in part, prior to December 1, 2025 at a redemption price equal to the greater of (1) 100% of the principal amount of the 4.875% senior notes to be redeemed and (2) the sum of the present values of the remaining scheduled payments of principal and interest thereon to December 1, 2025 (not including any portions of payments of interest accrued as of the date of redemption) discounted to the date of redemption on a semi-annual basis at the Adjusted Treasury Rate (as defined in the indenture governing these notes). In addition, at any time on or after December 1, 2025, the 4.875% senior notes may be redeemed by us, in whole or in part, at a redemption price equal to 100.0% of the principal amount, plus accrued and unpaid interest, if any, to (but excluding) the date of redemption. If a change of control triggering event (as defined in the indenture governing these notes) occurs, we are obligated to make an offer to purchase the then outstanding 4.875% senior notes at a redemption price of 101.0% of the principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The amount of the 4.875% senior notes, net of unamortized discount and unamortized debt issuance costs, included in the accompanying consolidated balance sheets was $592.0 million and $591.2 million at December 31, 2017 and 2016, respectively.

On September 26, 2014, CBRE Services issued $300.0 million in aggregate principal amount of 5.25% senior notes due March 15, 2025. On December 12, 2014, CBRE Services issued an additional $125.0 million in aggregate principal amount of 5.25% senior notes due March 15, 2025 at a price equal to 101.5% of their face value, plus interest deemed to have accrued from September 26, 2014. The 5.25% senior notes are unsecured obligations of CBRE Services, senior to all of its current and future subordinated indebtedness, but effectively subordinated to all of its current and future secured indebtedness. The 5.25% senior notes are jointly and severally guaranteed on a senior basis by us and each domestic subsidiary of CBRE Services that guarantees our 2017 Credit Agreement. Interest accrues at a rate of 5.25% per year and is payable semi-annually in arrears on March 15 and September 15, with the first interest payment made on March 15, 2015. The 5.25% senior notes are redeemable at our option, in whole or in part, prior to December 15, 2024 at a redemption price equal to the greater of (1) 100% of the principal amount of the 5.25% senior notes to be redeemed and (2) the sum of the present values of the remaining scheduled payments of principal and interest thereon to December 15, 2024 (not including any portions of payments of interest accrued as of the date of redemption) discounted to the date of redemption on a semi-annual basis at the Adjusted Treasury Rate (as defined in the indentures governing these notes). In addition, at any time on or after December 15, 2024, the 5.25% senior notes may be redeemed by us, in whole or in part, at a redemption price equal to 100.0% of the principal amount, plus accrued and unpaid interest, if any, to (but excluding) the date of redemption. If a change of control triggering event (as defined in the indenture governing these notes) occurs, we are obligated to make an offer to purchase the then outstanding 5.25% senior notes at a redemption price of 101.0% of the principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The amount of the 5.25% senior notes, net of unamortized premium and unamortized debt issuance costs, included in the accompanying consolidated balance sheets was $422.4 million and $422.2 million at December 31, 2017 and 2016, respectively.

On March 14, 2013, CBRE Services issued $800.0 million in aggregate principal amount of 5.00% senior notes due March 15, 2023. The 5.00% senior notes are unsecured obligations of CBRE Services, senior to all of its current and future subordinated indebtedness, but effectively subordinated to all of its current and future secured indebtedness. The 5.00% senior notes are jointly and severally guaranteed on a senior basis by us and each domestic subsidiary of CBRE Services that guarantees our 2017 Credit Agreement. Interest accrues at a rate of 5.00% per year and is payable semi-annually in arrears on March 15 and September 15, with the first interest payment made on September 15, 2013. The 5.00% senior notes are redeemable at our option, in whole or in part, on or after March 15, 2018 at a redemption price of 102.5% of the principal amount on that date and at declining prices thereafter. At any time prior to March 15, 2016, we could have redeemed up to 35.0% of the original principal amount of the 5.00% senior notes using the net cash proceeds from certain public offerings, which we did not elect to do. In addition, at any time prior to March 15, 2018, the 5.00% senior notes may be redeemed by us, in whole or in part, at a redemption price equal to 100.0% of the principal amount, plus accrued and unpaid interest, if any, to the date of redemption, and an applicable premium (as defined in the indenture governing these notes), which is based on the excess of the present value of the March 15, 2018 redemption price plus all remaining interest payments through March 15, 2018, over the principal amount of the 5.00% senior notes on such redemption date. If a change of control triggering event (as defined in the indenture governing these notes) occurs, we are obligated to make an offer to purchase the then outstanding 5.00% senior notes at a redemption price of 101.0% of the principal amount, plus accrued and unpaid interest, if any. The amount of the 5.00% senior notes, net of unamortized debt issuance costs, included in the accompanying consolidated balance sheets was $791.7 million and $790.4 million at December 31, 2017 and 2016, respectively.

The indentures governing our 5.00% senior notes, 4.875% senior notes and 5.25% senior notes contain restrictive covenants that, among other things, limit our ability to create or permit liens on assets securing indebtedness, enter into sale/leaseback transactions and enter into consolidations or mergers. In addition, our 2017 Credit Agreement also requires us to maintain a minimum coverage ratio of consolidated EBITDA (as defined in the 2017 Credit Agreement) to consolidated interest expense of 2.00x and a maximum leverage ratio of total debt less available cash to consolidated EBITDA (as defined in the 2017 Credit Agreement) of 4.25x (and in the case of the first four full fiscal quarters following consummation of a qualified acquisition (as defined in the 2017 Credit Agreement), 4.75x) as of the end of each fiscal quarter. On this basis, our coverage ratio of consolidated EBITDA to consolidated interest expense was 14.74x for the year ended December 31, 2017, and our leverage ratio of total debt less available cash to consolidated EBITDA was 0.79x as of December 31, 2017.

Short-Term Borrowings

We had short-term borrowings of $910.8 million and $1.3 billion as of December 31, 2017 and 2016, respectively, with related weighted average interest rates of 2.7% and 2.1%, respectively, which are included in the accompanying consolidated balance sheets.

Revolving Credit Facility

The revolving credit facility under the 2017 Credit Agreement allows for borrowings outside of the U.S., with a $200.0 million sub-facility available to one of our Canadian subsidiaries, one of our Australian subsidiaries and one of our New Zealand subsidiaries and a $300.0 million sub-facility available to one of our U.K. subsidiaries. Borrowings under the revolving credit facility bear interest at varying rates, based at our option, on either (1) the applicable fixed rate plus 0.775% to 1.075% or (2) the daily rate plus 0.0% to 0.075%, in each case as determined by reference to our Credit Rating (as defined in the 2017 Credit Agreement). The 2017 Credit Agreement requires us to pay a fee based on the total amount of the revolving credit facility commitment (whether used or unused) and a ticking fee to the lenders under the tranche A term loan facility (which commenced on January 30, 2018 and ends on July 31, 2018 (or such earlier date as the tranche A term loan facility is terminated or drawn in its entirety)). As of December 31, 2017, no amounts were outstanding under our revolving credit facility other than letters of credit totaling $2.0 million. These letters of credit, which reduce the amount we may borrow under the revolving credit facility, were primarily issued in the ordinary course of business.

The revolving credit facility under the 2015 Credit Agreement allowed for borrowings outside of the U.S., with a $75.0 million sub-facility available to one of our Canadian subsidiaries, a $100.0 million sub-facility available to one of our Australian subsidiaries and one of our New Zealand subsidiaries and a $300.0 million sub-facility available to one of our U.K. subsidiaries. Additionally, outstanding borrowings under these sub-facilities could have been up to 5.0% higher as allowed under the currency fluctuation provision in the 2015 Credit Agreement. Borrowings under the revolving credit facility bore interest at varying rates, based at our option, on either (1) the applicable fixed rate plus 0.85% to 1.00% or (2) the daily rate, in each case as determined by reference to our Credit Rating (as defined in the 2015 Credit Agreement). The 2015 Credit Agreement required us to pay a fee based on the total amount of the revolving credit facility commitment (whether used or unused). As of December 31, 2016, no amounts were outstanding under our revolving credit facility under the 2015 Credit Agreement other than letters of credit totaling $2.0 million. These letters of credit, which reduced the amount we could borrow under the revolving credit facility, were primarily issued in the ordinary course of business.

Warehouse Lines of Credit

CBRE Capital Markets has warehouse lines of credit with third-party lenders for the purpose of funding mortgage loans that will be resold, and a funding arrangement with Fannie Mae for the purpose of selling a percentage of certain closed multifamily loans to Fannie Mae. These warehouse lines are recourse only to CBRE Capital Markets and are secured by our related warehouse receivables. See Note 4 for additional information.

Other

On March 2, 2007, we entered into a $50.0 million credit note with Wells Fargo Bank for the purpose of purchasing eligible investments, which include cash equivalents, agency securities, A1/P1 commercial paper and eligible money market funds. The proceeds of this note are not made generally available to us, but instead are deposited in an investment account maintained by Wells Fargo Bank and used and applied solely to purchase eligible investment securities. This agreement has been amended several times and as of December 31, 2017 provides for a $5.0 million revolving credit note, bears interest at 0.25% per year and has a maturity date of April 30, 2018. As of December 31, 2017 and 2016, there were no amounts outstanding under this note.