CONSOLIDATED STATEMENT OF INCOME (LOSS) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest income:
Loans		$ 580	$ 743	$ 1,218	$ 1,459
Securities		262	298	505	602
Trading securities		48	67	128	130
Short-term investments		23	173	110	349
Other		5	20	24	38
Total interest income		918	1,301	1,985	2,578
Interest expense:
Deposits		200	380	521	713
Short-term borrowings		15	68	55	130
Long-term debt		162	306	360	618
Other		3	7	7	15
Total interest expense		380	761	943	1,476
Net interest income		538	540	1,042	1,102
Provision for credit losses		219		945
Provision for credit losses		337	46	849	104
Net interest income after provision for credit losses		319	494	97	998
Other revenues:
Other revenues		262	303	545	575
Trading revenue		192	123	206	256
Other securities gains, net		31	23	59	30
Gain (loss) on instruments designated at fair value and related derivatives		22	(17)	0	(26)
Other income (loss)		(41)	8	45	(3)
Total other revenues	[1]	464	436	851	826
Operating expenses:
Salaries and employee benefits		190	221	397	431
Support services from HSBC affiliates		389	411	771	791
Occupancy expense, net		38	48	178	93
Goodwill impairment		0	0	784	0
Other expenses		110	94	202	209
Total operating expenses		727	774	2,332	1,524
Income (loss) before income tax		56	156	(1,384)	300
Income tax expense (benefit)		49	35	(108)	70
Net income (loss)		7	121	(1,276)	230
Credit card fees, net [Member]
Other revenues:
Other revenues		9	18	20	30
Trust and investment management fees [Member]
Other revenues:
Other revenues		33	31	64	61
Other fees and commissions [Member]
Other revenues:
Other revenues		137	162	288	309
Servicing and other fees from HSBC affiliates [Member]
Other revenues:
Other revenues		$ 81	$ 88	$ 169	$ 169

[1] See Note 15, "Business Segments," for a reconciliation of total other revenues on a U.S. GAAP basis to other operating income for each business segment under the Group Reporting Basis.