SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2018

SEGMENT REPORTING

Summarized Financial Information by Reportable Segment

Summarized financial data of reportable segments was as follows (in millions):

											Corporate
							European				items and
	Options		U.S. Equities		Futures		Equities		Global FX		eliminations		Total
Three months ended June 30, 2018
Revenues	$	244.1	$	343.2	$	32.6	$	32.9	$	14.5	$	0.2	$	667.5
Operating income (loss)		78.1		37.5		16.3		6.5		(1.7)		(7.6)		129.1
Three months ended June 30, 2017
Revenues	$	233.5	$	331.1	$	37.5	$	27.6	$	10.9	$	0.2	$	640.8
Operating income (loss)		61.2		33.3		33.4		3.5		(4.1)		(9.5)		117.8

											Corporate
			U.S				European				items and
	Options		Equities		Futures		Equities		Global FX		elimination		Total
Six Months Ended June 30, 2018
Revenues	$	538.2	$	733.7	$	76.5	$	67.3	$	29.1	$	0.4	$	1,445.2
Operating income (loss)		191.7		71.3		42.5		12.7		(4.7)		(16.7)		296.8
Six Months Ended June 30, 2017
Revenues	$	426.2	$	451.3	$	67.4	$	36.9	$	14.9	$	0.3	$	997.0
Operating income (loss)		126.2		45.5		59.3		5.1		(5.3)		(86.9)		143.9