Long-Term Debt

The composition of long-term debt is presented in the following table. Interest rates on floating rate notes are determined periodically by formulas based on certain money market rates or, in certain instances, by minimum interest rates as specified in the agreements governing the issues. Interest rates and maturity dates in effect at December 31, 2019 are shown in the below table.



				At December 31,
	Maturity Date Range	Interest Rate Range	Interest Rate Weighted Average	2019		2018
				(in millions)
Issued or acquired by HSBC USA:
Senior debt:
Fixed-rate notes	2020-2025	2.35% - 4.20%	3.20%	$	6,231	$	7,886
Floating-rate notes				—		350
Structured notes	2020-2045	1.74% - 4.21%	2.49%	7,995		8,850
Total senior debt				14,226		17,086
Subordinated debt:
Fixed-rate notes	2020-2097	5.00% - 9.30%	6.16%	1,172		1,170
Floating-rate notes	2025	4.12%	4.12%	850		850
Total subordinated debt				2,022		2,020
Mark-to-market adjustment on fair value option debt				1,195		(243		)
Total issued or acquired by HSBC USA				17,443		18,863
Issued or acquired by HSBC Bank USA and its subsidiaries:
Senior debt:
Fixed-rate notes	2021-2026	3.67% - 4.37%	3.89%	5,124		4,927
Floating-rate notes	2036-2040	1.71% - 1.88%	1.73%	29		31
Structured notes	2020-2027	1.76% - 3.04%	2.93%	192		769
FHLB advances - floating-rate	2036	1.97%	1.97%	1,000		2,100
Total senior debt				6,345		7,827
Subordinated fixed-rate notes	2020-2039	4.88% - 7.00%	5.67%	2,685		3,676
Long-term debt issued by VIE - fixed-rate				—		66
Mark-to-market adjustment on fair value option debt				224		196
Total issued or acquired by HSBC Bank USA and its subsidiaries				9,254		11,765
Total long-term debt				$	26,697	$	30,628

At December 31, 2019 and 2018, we had structured notes totaling $9,388 million and $9,314 million, respectively, and subordinated debt totaling $959 million and $1,935 million, respectively, for which we have elected fair value option accounting and are therefore carried at fair value. See Note 16, "Fair Value Option," for further details. During the fourth quarter of 2019, HSBC Bank USA repurchased $1,269 million of its outstanding subordinated debt that was designated under fair value option and recorded a net pre-tax gain on extinguishment of $84 million.

As a member of the FHLB and the Federal Reserve Bank of New York, we have secured borrowing facilities which are collateralized by loans and investment securities. At December 31, 2019 and 2018, borrowings from the FHLB facility totaled $1,000 million and $2,100 million, respectively, which is included in long-term debt. Based upon the amounts pledged as collateral under these facilities, we have additional borrowing capacity of up to $13,701 million at December 31, 2019.

Maturities of long-term debt at December 31, 2019 were as follows:



	(in millions)
2020	$	7,259
2021	6,025
2022	2,230
2023	1,150
2024	1,484
Thereafter	8,549
Total	$	26,697