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RESTRUCTURING AND RELATED CHARGES - Additional Information (Details) $ in Thousands	3 Months Ended		5 Months Ended	6 Months Ended		9 Months Ended	21 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2020 numberofemployees	Dec. 31, 2021 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 40,478	$ (47)		$ 40,478	$ (114)
Restructuring charges related to impairment of right-of-use assets	$ 13,900			$ 13,900
Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges							$ 105,000
Reduction in number of positions (in employees) | numberofemployees						1,300
Minimum | Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges			$ 30,000
Maximum | Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges			$ 38,000

X

- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

+ References

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-Publisher FASB
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The expected number of positions to be eliminated as a result of restructuring activities.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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