REVENUE RECOGNITION (Tables)

12 Months Ended

Dec. 31, 2019

REVENUE RECOGNITION

Schedule of disaggregation of revenue

											Corporate
							European				items and
	Options		U.S. Equities		Futures		Equities		Global FX		eliminations		Total
Year Ended December 31, 2019
Transaction fees	$	742.9	$	744.6	$	110.2	$	73.1	$	45.4	$	—	$	1,716.2
Access and capacity fees		104.1		78.9		15.6		16.5		6.8		—		221.9
Market data fees		55.7		138.1		6.5		12.6		0.6		—		213.5
Regulatory fees		64.0		247.0		0.7		—		—		—		311.7
Other revenue		16.4		4.5		2.9		8.6		0.2		0.2		32.8
		983.1		1,213.1		135.9		110.8		53.0		0.2		2,496.1
Timing of revenue recognition
Services transferred at a point in time	$	823.3	$	996.1	$	113.8	$	81.7	$	45.6	$	0.2	$	2,060.7
Services transferred over time		159.8		217.0		22.1		29.1		7.4		—		435.4
		983.1		1,213.1		135.9		110.8		53.0		0.2		2,496.1
Year Ended December 31, 2018
Transaction fees	$	835.5	$	876.4	$	128.0	$	97.4	$	49.6	$	—	$	1,986.9
Access and capacity fees		99.4		75.6		15.1		14.7		6.2		—		211.0
Market data fees		42.9		140.9		6.6		13.1		0.5		—		204.0
Regulatory fees		60.0		273.8		0.1		—		—		—		333.9
Other revenue		19.7		6.4		—		6.4		0.1		0.4		33.0
		1,057.5		1,373.1		149.8		131.6		56.4		0.4		2,768.8
Timing of revenue recognition
Services transferred at a point in time	$	915.2	$	1,156.6	$	128.1	$	103.8	$	49.7	$	0.4	$	2,353.8
Services transferred over time		142.3		216.5		21.7		27.8		6.7		—		415.0
		1,057.5		1,373.1		149.8		131.6		56.4		0.4		2,768.8
Year Ended December 31, 2017
Transaction fees	$	673.8	$	659.4	$	131.7	$	66.2	$	33.8	$	—	$	1,564.9
Access and capacity fees		97.3		60.5		9.1		10.6		4.1		—		181.6
Market data fees		41.1		111.0		2.5		9.6		0.3		—		164.5
Regulatory fees		55.4		236.1		—		—		—		—		291.5
Other revenue		15.9		5.5		1.3		3.2		—		0.7		26.6
		883.5		1,072.5		144.6		89.6		38.2		0.7		2,229.1
Timing of revenue recognition
Services transferred at a point in time	$	745.1	$	901.0	$	133.0	$	69.4	$	33.8	$	0.7	$	1,883.0
Services transferred over time		138.4		171.5		11.6		20.2		4.4		—		346.1
		883.5		1,072.5		144.6		89.6		38.2		0.7		2,229.1

Schedule of revenue recognized from contract liabilities and the remaining balance

	Balance at January 1, 2019			Cash Additions		Revenue Recognized		Balance at December 31, 2019
Liquidity provider sliding scale (1)	$	—	$	9.6	$	(9.6)	$	—
Other, net		8.5		31.7		(35.7)		4.5
Total deferred revenue	$	8.5	$	41.3	$	(45.3)	$	4.5

(1) Liquidity providers are eligible to participate in the sliding scale program, which involves prepayment of transaction fees, and to receive reduced fees based on the achievement of certain volume thresholds within a calendar month. These transaction fees are amortized and recorded ratably as the transactions occur over the period.