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GOODWILL AND INTANGIBLE ASSETS - ADDITIONAL INFORMATION (Details)			3 Months Ended				8 Months Ended	12 Months Ended
	Jan. 01, 2019 reporting_unit	Dec. 31, 2018 reporting_unit	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($) reporting_unit	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) reporting_unit
Goodwill [Line Items]
Number of reporting units | reporting_unit	5	11						5		5
Goodwill impairment				$ 0	$ 157,000,000			$ 0	$ 157,000,000	$ 0
Indefinite-lived intangible asset impairment							$ 0	0	39,000,000	9,000,000
Amortization of intangible assets								222,000,000	$ 192,000,000	$ 190,000,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2022								214,000,000
2023								216,000,000
2024								219,000,000
2025								224,000,000
2026								146,000,000
Developed technology
Goodwill [Line Items]
Payments to acquire intangible assets			$ 3,000,000
Asset acquisition, contingent consideration, liability								$ 17,000,000
Minimum
Goodwill [Line Items]
Indefinite lived intangible asset, discount rate									10.00%
Minimum | Measurement Input, Discount Rate
Goodwill [Line Items]
Goodwill, measurement input					0.095			0.08
Indefinite lived intangible asset, discount rate								8.50%
Maximum
Goodwill [Line Items]
Indefinite lived intangible asset, discount rate									17.50%
Maximum | Measurement Input, Discount Rate
Goodwill [Line Items]
Goodwill, measurement input					0.115			0.095
Indefinite lived intangible asset, discount rate								10.00%
Technologies & Equipment
Goodwill [Line Items]
Goodwill impairment					$ 157,000,000
Technologies & Equipment | Tradenames and trademarks
Goodwill [Line Items]
Indefinite-lived intangible asset impairment						$ 5,000,000
Equipment And Instruments Reporting Unit | C O V I D19 | Tradenames and trademarks
Goodwill [Line Items]
Goodwill impairment									$ 39,000,000

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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.

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