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GOODWILL AND INTANGIBLE ASSETS, NET - Intangible assets by segment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Intangible Assets |  |  |
Balance at beginning of the year | $ 1,729.0 | $ 1,589.9 |
Additions | 73.8 | 247.7 |
Amortization | (126.6) | (124.8) | $ (138.6)
Changes in foreign currency exchange rates | (7.6) | 16.2 |
Balance at end of the year | 1,668.6 | 1,729.0 | 1,589.9
Options |  |  |
Intangible Assets |  |  |
Balance at beginning of the year | 173.4 | 166.6 |
Additions |  | 22.3 |
Amortization | (14.3) | (15.5) |
Balance at end of the year | 159.1 | 173.4 | 166.6
North American Equities |  |  |
Intangible Assets |  |  |
Balance at beginning of the year | 1,055.5 | 921.4 |
Additions |  | 193.1 |
Amortization | (64.4) | (61.0) |
Changes in foreign currency exchange rates | 0.3 | 2.0 |
Balance at end of the year | 991.4 | 1,055.5 | 921.4
Europe and Asia Pacific |  |  |
Intangible Assets |  |  |
Balance at beginning of the year | 386.8 | 363.7 |
Additions | 73.8 | 32.3 |
Amortization | (26.3) | (23.4) |
Changes in foreign currency exchange rates | (7.9) | 14.2 |
Balance at end of the year | 426.4 | 386.8 | 363.7
Global FX |  |  |
Intangible Assets |  |  |
Balance at beginning of the year | 113.3 | 138.2 |
Amortization | (21.6) | (24.9) |
Balance at end of the year | $ 91.7 | $ 113.3 | $ 138.2

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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition, excluding goodwill. + References No definition available. + Details
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- Definition Finite-lived and Indefinite-lived Intangible Assets [Roll Forward] + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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