POST EMPLOYMENT BENEFITS - Plan assets distribution (Details)	Sep. 30, 2022
Plan assets distribution
Plan assets distribution (in percent)	100.00%
Cash
Plan assets distribution
Plan assets distribution (in percent)	24.90%
Equity securities
Plan assets distribution
Plan assets distribution (in percent)	6.20%
Debt securities
Plan assets distribution
Plan assets distribution (in percent)	49.50%
Real estate mutual fund
Plan assets distribution
Plan assets distribution (in percent)	5.90%
Other (including cash)
Plan assets distribution
Plan assets distribution (in percent)	13.50%