RELATED PARTY TRANSACTIONS - Financial Data Resulting from Transactions with Related Parties, Income Statement Data (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Cost reimbursement revenue		$ 25,100	$ 23,713	$ 20,773
Equity in earnings	[1]	8	9	18
Equity Method Investment
Related Party Transaction [Line Items]
Equity in earnings		8	9	18
Reimbursements
Related Party Transaction [Line Items]
Cost reimbursement revenue	[1]	18,482	17,413	15,417
Reimbursed expenses	[1]	(18,799)	(17,424)	(15,141)
Reimbursements | Equity Method Investment
Related Party Transaction [Line Items]
Cost reimbursement revenue		131	122	104
Reimbursed expenses		$ (135)	$ (126)	$ (104)

[1] See Note 15 for disclosure of related party amounts.