CONSOLIDATED STATEMENT OF INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Loans	$ 1,705	$ 2,202	$ 2,856
Securities	641	897	1,188
Trading securities	225	288	291
Short-term investments	81	143	573
Other	23	42	82
Total interest income	2,675	3,572	4,990
Interest expense:
Deposits	267	755	1,475
Short-term borrowings	18	69	231
Long-term debt	296	558	1,137
Other	11	16	35
Total interest expense	592	1,398	2,878
Net interest income	2,083	2,174	2,112
Provision for credit losses	(570)	810	195
Net interest income after provision for credit losses	2,653	1,364	1,917
Other revenues:
Trading revenue (expense)	24	273	591
Other securities gains, net	73	137	88
Gain (loss) on instruments designated at fair value and related derivatives	35	34	(13)
Other income (loss)	(13)	7	16
Total other revenues	1,237	1,535	1,854
Operating expenses:
Salaries and employee benefits	665	767	822
Support services from HSBC affiliates	1,620	1,551	1,638
Occupancy expense, net	248	281	197
Goodwill impairment	0	784	365
Other expenses	445	498	479
Total operating expenses	2,978	3,881	3,501
Income (loss) before income tax	912	(982)	270
Income tax expense (benefit)	224	(42)	157
Net income (loss)	688	(940)	113
Credit card fees, net
Other revenues:
Other revenues	37	38	67
Trust and investment management fees
Other revenues:
Other revenues	108	132	132
Other fees and commissions
Other revenues:
Other revenues	652	567	619
Servicing and other fees from HSBC affiliates
Other revenues:
Other revenues	$ 321	$ 347	$ 354