VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Variable Interest Entity [Line Items]
Assets	[1]	$ 6,038		$ 6,085
Equity method investments		$ 113		128
Consolidated VIEs
Variable Interest Entity [Line Items]
Variable interest entities outsourcing agreement initial term		5 years
Assets		$ 78		85
Consolidated VIEs | Eliminations
Variable Interest Entity [Line Items]
Liabilities associated with the certain outsourcing agreements and purchase options		130		130
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets		171		$ 192
Loss (gain) from equity method investments		1	$ (35)
Variable Interest Entity, Not Primary Beneficiary | DSIH
Variable Interest Entity [Line Items]
Equity method investments		$ 0

[1] Our consolidated total assets as of March 31, 2024 and December 31, 2023 include total assets of variable interest entities ("VIE") of $78 million and $85 million, respectively, which can only be used to settle the obligations of the VIEs. Our consolidated total liabilities as of March 31, 2024 and December 31, 2023 include total liabilities of VIEs of $16 million and $17 million, respectively, for which the creditors of the VIEs have no recourse to us. See Note 8. Variable Interest Entities.