PROPERTY, EQUIPMENT AND SOFTWARE - Summary of Accumulated Depreciation (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Movement in Accumulated Depreciation, Property, Plant and Equipment [Roll Forward]
Beginning balance	$ (1,121.0)	$ (1,074.5)
Depreciation expense	(132.9)	(131.5)	$ (142.4)
Property, equipment, and software retirements and disposals	327.1	61.6
Foreign currency translation adjustment	(9.1)	23.4
Ending balance	$ (935.9)	$ (1,121.0)	$ (1,074.5)

Foreign Currency Increase (Decrease), Accumulated Depreciation

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- Definition

Movement in Accumulated Depreciation, Property, Plant and Equipment

+ References

No definition available.

+ Details

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- Definition

The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

+ Details

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- Definition

Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Definition

Amount of accumulated depreciation of long-lived, physical assets used to produce goods and services and not intended for resale, classified as other.

+ References

No definition available.

+ Details

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