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GOODWILL AND INTANGIBLE ASSETS, NET - Schedule of intangible assets by segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Intangible Assets
Balance at beginning of the year			$ 1,729.0
Additions			73.8
Amortization	$ (31.8)	$ (30.9)	(95.3)	$ (93.5)
Changes in foreign currency exchange rates			(6.5)
Balance at end of the year	1,701.0		1,701.0
Options
Intangible Assets
Balance at beginning of the year			173.4
Amortization			(10.8)
Balance at end of the year	162.6		162.6
North American Equities
Intangible Assets
Balance at beginning of the year			1,055.5
Amortization			(48.6)
Changes in foreign currency exchange rates			0.2
Balance at end of the year	1,007.1		1,007.1
Europe and Asia Pacific
Intangible Assets
Balance at beginning of the year			386.8
Additions			73.8
Amortization			(19.5)
Changes in foreign currency exchange rates			(6.7)
Balance at end of the year	434.4		434.4
Global FX
Intangible Assets
Balance at beginning of the year			113.3
Amortization			(16.4)
Balance at end of the year	$ 96.9		$ 96.9

X

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition, excluding goodwill.

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