RETIREMENT BENEFITS - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Accumulated benefit obligation	$ 2,000	$ 2,900
Pension asset transfer			$ 381
Reversion excise tax			76
Defined contribution plan expense	$ 360	350	290
Equity Securities
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Investment allocation, percentage	23.00%
Debt Securities
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Investment allocation, percentage	66.00%
Total return swap contracts
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Investment allocation, percentage	11.00%
Pension Plans, Defined Benefit
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Net periodic benefit cost of defined benefit pension plans	$ 27	28	42
Benefit obligation	$ 1,976	$ 2,935	$ 3,242
Discount rate	4.00%	1.60%
Other Postretirement Benefits Plan
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Benefit obligation	$ 187	$ 237
Discount rate	5.00%	2.50%