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Revenue From Contracts With Customers (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue


		Three Months Ended March 31, 2019
		Electronic Brokerage			Market Making			Corporate			Total

		(in millions)
Geographic location 1
United States		$	147		$	1		$	-		$	148
International			60			-			-			60
		$	207		$	1		$	-		$	208

Major types of services
Commissions		$	173		$	-		$	-		$	173
Market data fees 2			12			-			-			12
Risk exposure fees 2			4			-			-			4
Payments for order flow 2			5			-			-			5
Minimum activity fees 2			7			-			-			7
Other 2			6			1			-			7
		$	207		$	1		$	-		$	208


		Three Months Ended March 31, 2018
		Electronic Brokerage			Market Making			Corporate			Total

		(in millions)
Geographic location 1
United States		$	182		$	2		$	-		$	184
International			72			-			-			72
		$	254		$	2		$	-		$	256

Major types of services
Commissions		$	220		$	-		$	-		$	220
Market data fees 2			11			-			-			11
Risk exposure fees 2			8			-			-			8
Payments for order flow 2			5			-			-			5
Minimum activity fees 2			5			-			-			5
Other 2			5			2			-			7
		$	254		$	2		$	-		$	256

(1)

Based on the location of the subsidiaries in which the revenues are recorded.

(2)

Included in other income on the condensed consolidated statements of comprehensive income.