DERIVATIVES - Summary of Effect of Cash Flow and Fair Value Hedge Accounting on Accumulated Other Comprehensive (Income) Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Cash flow hedges: | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, cash flow hedges	$ 6	$ (7)	$ 11	$ (18)
Cash flow hedges: | Interest rate swaps | Income Statement Location: us-gaap:InterestIncomeExpenseNonoperatingNet
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI into income, cash flow hedging	0	0	0	0
Cash flow hedges: | Cross-currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, cash flow hedges	(2)	0	(1)	2
Cash flow hedges: | Cross-currency contracts | Income Statement Location: us-gaap:InvestmentIncomeNet
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI into income, cash flow hedging	1	(9)	3	(14)
Cash flow hedges: | Foreign currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, cash flow hedges	0	0	0	0
Cash flow hedges: | Foreign currency forward contracts | Income Statement Location: us-gaap:InvestmentIncomeNet
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI into income, cash flow hedging	0	0	0	0
Fair value hedges: | Cross-currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, fair value hedging	(2)	1	0	1
Fair value hedges: | Cross-currency contracts | Income Statement Location: us-gaap:InterestIncomeExpenseNonoperatingNet
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI into income, fair value hedging	0	0	0	(2)
Fair value hedges: | Cross-currency contracts | Income Statement Location: us-gaap:InvestmentIncomeNet
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI into income, fair value hedging	5	(47)	16	(60)
Net investment hedges: | Cross-currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income, net investment hedging	(5)	(20)	11	(23)
Net investment hedges: | Cross-currency contracts | Income Statement Location: us-gaap:InterestIncomeExpenseNonoperatingNet
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI into income, net investment hedging	$ (3)	$ 1	$ 0	$ 0