STOCKHOLDERS' EQUITY (Shares of Dow Common Stock) (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Common Stock and Treasury Stock Outstanding Roll Forward [Line Items]
Issued (in shares)	8,233,684	4,764,554	2,457,404
Impact of recapitalization			748,771,140
Treasury Stock Reissued	0	0	0
Issued
Schedule of Common Stock and Treasury Stock Outstanding Roll Forward [Line Items]
Shares, Outstanding	764,226,882	755,993,198	751,228,644	100
Held in Treasury
Schedule of Common Stock and Treasury Stock Outstanding Roll Forward [Line Items]
Shares, Outstanding	29,011,573	12,803,303	9,729,834	0
Repurchased	16,208,270	3,073,469	9,729,834