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ACQUISITIONS AND DIVESTITURES - Narrative (Details) - USD ($) $ in Thousands |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 10, 2021 | Sep. 09, 2021 | Jun. 11, 2021 | Mar. 31, 2022 | Mar. 31, 2021
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  | $ 2,021,931 | $ 1,581,160
Accounts receivable held-for-sale |  |  |  | 23,600 |
Other assets held-for-sale |  |  |  | 700 |
Deferred revenue held-for-sale |  |  |  | 1,700 |
Accounts payable held-for-sale |  |  |  | 200 |
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Tracepoint LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Equity method investment, ownership (as a percent) |  | 40.00% |  |  |
Gains associated with equity method investment activities |  | $ 5,700 |  |  |
Tracepoint LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership interest acquired (as a percent) | 60.00% |  |  |  |
Cash consideration (gross of cash acquired and including net adjustments) | $ 120,300 |  |  |  |
Intangible assets | $ 90,500 |  |  |  |
Useful life (in years) | 10 years |  |  |  |
Goodwill | $ 94,300 |  |  |  |
Liberty |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration (gross of cash acquired and including net adjustments) |  |  | $ 669,100 |  |
Intangible assets |  |  | $ 309,000 |  |
Useful life (in years) |  |  | 12 years |  |
Goodwill |  |  | $ 346,500 |  |
EverWatch |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase consideration |  |  |  | $ 440,000 |

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