DERIVATIVES - Summary of Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	$ 2,320	$ 2,264
Other Assets	85	54
Other Noncurrent liabilities	0	1
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	1,120
Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	2,199	2,191
Other Assets	85	54
Other Noncurrent liabilities	0	0
Derivatives designated as hedging instruments: | Interest rate swaps | Cash flow hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	1,120	1,120
Other Assets	22	7
Other Noncurrent liabilities	0	0
Derivatives designated as hedging instruments: | Cross currency contracts | Cash flow hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	120	120
Other Assets	11	10
Other Noncurrent liabilities	0	0
Derivatives designated as hedging instruments: | Cross currency contracts | Fair value hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	721	721
Other Assets	30	17
Other Noncurrent liabilities	0	0
Derivatives designated as hedging instruments: | Cross currency contracts | Net investment hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	230	230	$ 230
Other Assets	22	20
Other Noncurrent liabilities	0	0
Derivatives designated as hedging instruments: | Foreign currency forward contracts | Cash flow hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	8	0
Other Assets	0	0
Other Noncurrent liabilities	0	0
Derivatives not designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	121	73
Other Assets	0	0
Other Noncurrent liabilities	0	1
Derivatives not designated as hedging instruments: | Foreign currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding Gross Notional Amount	121	73
Other Assets	0	0
Other Noncurrent liabilities	$ 0	$ 1