Cover - shares	3 Months Ended
	Mar. 31, 2024	Apr. 26, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-07436
Entity Registrant Name	HSBC USA Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	13-2764867
Entity Address, Address Line One	66 Hudson Boulevard
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10001
City Area Code	212
Local Phone Number	525-5000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		714
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000083246
Current Fiscal Year End Date	--12-31
$100,000,000 Zero Coupon Callable Accreting Notes due January 15, 2043
Document Information [Line Items]
Title of 12(b) Security	$100,000,000 Zero Coupon Callable Accreting Notes due January 15, 2043
Trading Symbol	HUSI/43
Security Exchange Name	NYSE
$50,000,000 Zero Coupon Callable Accreting Notes due January 29, 2043
Document Information [Line Items]
Title of 12(b) Security	$50,000,000 Zero Coupon Callable Accreting Notes due January 29, 2043
Trading Symbol	HUSI/43A
Security Exchange Name	NYSE