RESTRUCTURING - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	$ 0	$ 1	$ 4
Program related costs	4	11	$ 1
2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring costs		12
Restructuring liabilities	18	18
Chubb Acquisition \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring costs		73
Expected restructuring costs	$ 125	125
Safety Services \| Chubb Acquisition \| 2022 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 5

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount expected to be recognized in earnings for the specified restructuring cost.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after cash payment, 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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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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