RETIREMENT BENEFITS - Plan Assets (Details)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
U.S. | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		100.00%	100.00%
U.S. | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		100.00%	100.00%
U.S. | Equity securities | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		7.00%	7.00%
U.S. | Equity securities | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		7.00%	7.00%
U.S. | Equity securities | Forecast | Minimum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
U.S. | Equity securities | Forecast | Maximum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	22.00%
U.S. | Debt securities | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		71.00%	71.00%
U.S. | Debt securities | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		71.00%	71.00%
U.S. | Debt securities | Forecast | Minimum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	55.00%
U.S. | Debt securities | Forecast | Maximum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	100.00%
U.S. | Real assets(1) | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		5.00%	2.00%
U.S. | Real assets(1) | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		5.00%	2.00%
U.S. | Real assets(1) | Forecast | Minimum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
U.S. | Real assets(1) | Forecast | Maximum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	13.00%
U.S. | Private equity | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		7.00%	8.00%
U.S. | Private equity | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		7.00%	8.00%
U.S. | Private equity | Forecast | Minimum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
U.S. | Private equity | Forecast | Maximum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	5.00%
U.S. | Other investments | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		10.00%	12.00%
U.S. | Other investments | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		10.00%	12.00%
U.S. | Other investments | Forecast | Minimum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
U.S. | Other investments | Forecast | Maximum
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	14.00%
Non-U.S. | Weighted Average | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		100.00%	100.00%
Non-U.S. | Weighted Average | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		100.00%	100.00%
Non-U.S. | Equity securities | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		0.00%	0.00%
Non-U.S. | Equity securities | Minimum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		0.00%	0.00%
Non-U.S. | Equity securities | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		49.00%	48.00%
Non-U.S. | Equity securities | Maximum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		37.00%	46.00%
Non-U.S. | Equity securities | Weighted Average | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		18.00%	19.00%
Non-U.S. | Equity securities | Weighted Average | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		36.00%	45.00%
Non-U.S. | Equity securities | Forecast | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
Non-U.S. | Equity securities | Forecast | Minimum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
Non-U.S. | Equity securities | Forecast | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	49.00%
Non-U.S. | Equity securities | Forecast | Maximum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	46.00%
Non-U.S. | Debt securities | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		0.00%	0.00%
Non-U.S. | Debt securities | Minimum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		59.00%	49.00%
Non-U.S. | Debt securities | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		100.00%	100.00%
Non-U.S. | Debt securities | Maximum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		100.00%	100.00%
Non-U.S. | Debt securities | Weighted Average | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		73.00%	73.00%
Non-U.S. | Debt securities | Weighted Average | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		60.00%	50.00%
Non-U.S. | Debt securities | Forecast | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
Non-U.S. | Debt securities | Forecast | Minimum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	50.00%
Non-U.S. | Debt securities | Forecast | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	100.00%
Non-U.S. | Debt securities | Forecast | Maximum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	100.00%
Non-U.S. | Real assets(1) | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		0.00%	0.00%
Non-U.S. | Real assets(1) | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		16.00%	17.00%
Non-U.S. | Real assets(1) | Weighted Average | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		1.00%	1.00%
Non-U.S. | Real assets(1) | Forecast | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
Non-U.S. | Real assets(1) | Forecast | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	16.00%
Non-U.S. | Other investments | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		0.00%	0.00%
Non-U.S. | Other investments | Minimum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		0.00%	0.00%
Non-U.S. | Other investments | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		100.00%	100.00%
Non-U.S. | Other investments | Maximum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)		4.00%	5.00%
Non-U.S. | Other investments | Weighted Average | Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		8.00%	7.00%
Non-U.S. | Other investments | Weighted Average | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as a percent)		4.00%	5.00%
Non-U.S. | Other investments | Forecast | Minimum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
Non-U.S. | Other investments | Forecast | Minimum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	0.00%
Non-U.S. | Other investments | Forecast | Maximum | Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	100.00%
Non-U.S. | Other investments | Forecast | Maximum | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as a percent)	4.00%