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RELATED PARTIES - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
RELATED PARTIES - Narrative (Details) $ in Millions	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) director	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Related Party Transaction [Line Items]
All other assets	$ 2,013		$ 2,013		$ 1,024
All other liabilities	1,926		1,926		$ 1,603
Revenue	4,817	$ 4,484	9,524	$ 8,827
Majority shareholder \| Separation costs related to pension, benefit and contribution plans
Related Party Transaction [Line Items]
Transaction amount		64		123
Majority shareholder \| Share-based compensation expense
Related Party Transaction [Line Items]
Transaction amount		$ 20		$ 39
Related party
Related Party Transaction [Line Items]
All other assets	88		88
All other liabilities	132		132
Related party \| Transition Services Agreement
Related Party Transaction [Line Items]
Transaction amount	84		$ 192
Agreement term			36 months
Related party \| Tax Matters Agreement
Related Party Transaction [Line Items]
Period following distribution date			2 years
Directors
Related Party Transaction [Line Items]
Number of board members \| director			2
Revenue	$ 23		$ 47