CONSOLIDATED STATEMENT OF INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018		Jun. 30, 2017
Interest income:
Loans		$ 637	$ 548	$ 1,235		$ 1,121
Securities		278	242	531		484
Trading securities		53	58	102		116
Short-term investments		157	181	315		312
Other		22	13	38		24
Total interest income		1,147	1,042	2,221		2,057
Interest expense:
Deposits		258	169	480		319
Short-term borrowings		43	32	76		55
Long-term debt		283	251	540		493
Other		8	8	18		11
Total interest expense		592	460	1,114		878
Net interest income	[1]	555	582	1,107		1,179
Provision for credit losses		(45)	(21)	(116)		(98)
Net interest income after provision for credit losses		600	603	1,223		1,277
Other revenues:
Other revenues		323	300	634		629
Trading revenue		192	71	355		141
Other securities gains, net		10	19	15		24
Residential mortgage banking expense		(2)	(2)	(2)		(4)
Gain (loss) on instruments designated at fair value and related derivatives		4	(1)	34		33
Other income		13	174	20		335
Total other revenues	[2]	537	558	1,050	[3]	1,151	[3]
Operating expenses:
Salaries and employee benefits		212	256	419		521
Support services from HSBC affiliates		405	399	816		783
Occupancy expense, net		45	61	88		102
Other expenses		124	133	745		262
Total operating expenses	[3]	786	849	2,068		1,668	[4]
Income before income tax		351	312	205		760
Income tax expense		82	108	174		260
Net income		269	204	31		500
Credit card fees [Member]
Other revenues:
Other revenues		15	14	26		25
Trust and investment management fees [Member]
Other revenues:
Other revenues		34	39	72		77
Other fees and commissions [Member]
Other revenues:
Other revenues		184	163	344		325
Servicing and other fees from HSBC affiliates [Member]
Other revenues:
Other revenues		$ 87	$ 81	$ 186		$ 195

[1] Net interest income of each segment represents the difference between actual interest earned on assets and interest incurred on liabilities of the segment adjusted for a funding charge or credit. Segments are charged a cost to fund assets (e.g. customer loans) and receive a funding credit for funds provided (e.g. customer deposits) based on equivalent market rates. The objective of these charges/credits is to transfer interest rate risk from the segments to one centralized unit in Balance Sheet Management and more appropriately reflect the profitability of the segments.

[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] Expenses for the segments include fully apportioned corporate overhead expenses.

[4] During the fourth quarter of 2017, we changed our presentation for certain cost reimbursements that were previously netted as an offset to affiliate expense and began presenting these reimbursements gross in affiliate income. As a result, we have reclassified prior period amounts in order to conform to the current year presentation, which increased both RBWM other operating income and RBWM operating expenses $13 million and $24 million and also increased both GB&M other operating income and GB&M operating expenses $16 million and $37 million during the three and six months ended June 30, 2017, respectively. See Note 14, "Related Party Transactions," for additional information.