COMMISSIONS AND FEES; ADMINISTRATION AND OTHER FIDUCIARY FEES (Tables)

12 Months Ended

Dec. 31, 2018

Banking and Thrift [Abstract]

Commissions and fees revenues

The following table presents Administration and other fiduciary fees:

	2018								2017								2016
In millions of dollars	ICG		GCB		Corp/Other		Total		ICG		GCB		Corp/Other		Total		ICG		GCB		Corp/Other		Total
Custody fees	$	1,494	$	136	$	65	$	1,695	$	1,505	$	167	$	56	$	1,728	$	1,353	$	163	$	48	$	1,564
Fiduciary fees	645		597		43		1,285		593		575		91		1,259		554		539		50		1,143
Guarantee fees	536		57		7		600		535		54		8		597		523		54		10		587
Total administration   and other fiduciary fees(1)	$	2,675	$	790	$	115	$	3,580	$	2,633	$	796	$	155	$	3,584	$	2,430	$	756	$	108	$	3,294

(1) Administration and other fiduciary fees includes $600 million, $597 million and $587 million for the years ended December 31, 2018, 2017 and 2016, respectively, that are not accounted for under ASC 606, Revenue from Contracts with Customers. These amounts include guarantee fees.

The following table presents Commissions and fees revenue:

	2018												2017												2016
In millions of dollars	ICG			GCB			Corp/Other			Total			ICG			GCB			Corp/Other			Total			ICG			GCB			Corp/Other			Total
Investment banking	$	3,568		$	—		$	—		$	3,568		$	3,817		$	—		$	—		$	3,817		$	3,000		$	—		$	—		$	3,000
Brokerage commissions	1,977			815			—			2,792			1,889			826			3			2,718			1,748			636			11			2,395
Credit- and bank-card   income
Interchange fees	1,072			8,117			11			9,200			950			7,526			99			8,575			837			6,189			164			7,190
Card-related loan fees	63			627			12			702			53			693			48			794			27			784			65			876
Card rewards and partner        payments	(503		)	(8,254		)	(12		)	(8,769		)	(425		)	(7,243		)	(57		)	(7,725		)	(361		)	(6,084		)	(111		)	(6,556		)
Deposit-related fees(1)	949			654			1			1,604			947			726			14			1,687			818			721			19			1,558
Transactional service fees	718			98			4			820			738			91			49			878			700			84			136			920
Corporate finance(2)	729			5			—			734			761			5			—			766			741			4			—			745
Insurance distribution   revenue(3)	14			565			11			590			12			562			68			642			10			584			90			684
Insurance premiums(3)	—			119			—			119			—			122			—			122			—			136			144			280
Loan servicing	156			122			37			315			146			101			95			342			147			127			77			351
Other	25			143			14			182			(38		)	99			30			91			31			90			114			235
Total commissions and   fees(4)	$	8,768		$	3,011		$	78		$	11,857		$	8,850		$	3,508		$	349		$	12,707		$	7,698		$	3,271		$	709		$	11,678

(1) Includes overdraft fees of $128 million, $135 million and $133 million for the years ended December 31, 2018, 2017 and 2016, respectively. Overdraft fees are accounted for under ASC 310.

(2) Consists primarily of fees earned from structuring and underwriting loan syndications or related financing activity. This activity is accounted for under ASC 310.

(3) Previously reported as insurance premiums in the Consolidated Statement of Income.

(4) Commissions and fees includes $(6,766) million, $(5,568) million and $(4,169) million not accounted for under ASC 606, Revenue from Contracts with Customers, for the years ended December 31, 2018, 2017 and 2016, respectively. Amounts reported in Commissions and fees accounted for under other guidance primarily include card-related loan fees, card reward programs and certain partner payments, corporate finance fees, insurance premiums and loan servicing fees.