CONSOLIDATED STATEMENT OF INCOME - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Interest income:
Loans		$ 716	$ 598
Securities		304	253
Trading securities		63	49
Short-term investments		176	158
Other		18	16
Total interest income		1,277	1,074
Interest expense:
Deposits		333	222
Short-term borrowings		62	33
Long-term debt		312	257
Other		8	10
Total interest expense		715	522
Net interest income		562	552
Provision for credit losses		58	(71)
Net interest income after provision for credit losses		504	623
Other revenues:
Other revenues		272	311
Trading revenue		133	163
Other securities gains, net		7	5
Gain (loss) on instruments designated at fair value and related derivatives		(9)	30
Other income (loss)		(11)	7
Total other revenues	[1],[2]	390	513
Operating expenses:
Salaries and employee benefits		210	207
Support services from HSBC affiliates		380	411
Occupancy expense, net		45	43
Other expenses		115	621
Total operating expenses	[1]	750	1,282	[3]
Income (loss) before income tax		144	(146)
Income tax expense		35	92
Net income (loss)		109	(238)
Credit card fees, net [Member]
Other revenues:
Other revenues		12	11
Trust and investment management fees [Member]
Other revenues:
Other revenues		30	38
Other fees and commissions [Member]
Other revenues:
Other revenues		147	160
Servicing and other fees from HSBC affiliates [Member]
Other revenues:
Other revenues		$ 81	$ 99

[1] Represents adjustments associated with differences between U.S. GAAP and the Group Reporting Basis.

[2] 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.

[3] Represents differences in financial statement presentation between U.S. GAAP and the Group Reporting Basis.