RESTRUCTURING (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) employees yr	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) employees	Jun. 30, 2014 USD ($)	Apr. 29, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 375	$ 0	$ 375	$ 0
Net Income (Loss) Attributable to Noncontrolling Interest	(23)	3	18	20
Restructuring Reserve [Roll Forward]
Restructuring Reserve	193		193		$ 375
Charges against the reserve	169
Cash payments	(13)
Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Costs Associated with Exit or Disposal Activities	10
Restructuring Reserve [Roll Forward]
Restructuring Reserve	10		10		10
Charges against the reserve	0
Cash payments	$ 0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated | employees	1,750
Severance Costs	$ 196
Restructuring Reserve [Roll Forward]
Restructuring Reserve	183		$ 183		196
Charges against the reserve	0
Cash payments	$ (13)
Entity Number of Employees | employees	1,631		1,631
Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	$ 169
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0		$ 0		$ 169
Charges against the reserve	(169)
Cash payments	0
Agricultural Sciences [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	14
Agricultural Sciences [Member] | Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Costs Associated with Exit or Disposal Activities	6
Agricultural Sciences [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	0
Agricultural Sciences [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	8
Consumer Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	67
Consumer Solutions [Member] | Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Costs Associated with Exit or Disposal Activities	2
Consumer Solutions [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	0
Consumer Solutions [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	65
Infrastructure Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	27
Infrastructure Solutions [Member] | Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Costs Associated with Exit or Disposal Activities	2
Infrastructure Solutions [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	0
Infrastructure Solutions [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	25
Performance Plastics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	12
Performance Plastics [Member] | Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Costs Associated with Exit or Disposal Activities	0
Performance Plastics [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	0
Performance Plastics [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	12
Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	255
Corporate Segment [Member] | Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Costs Associated with Exit or Disposal Activities	0
Corporate Segment [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	196
Corporate Segment [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	$ 59
2Q15 Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Years to Complete | yr	2
Shut Down of Dow Electronics Materials Facilities and Assets [Member] | Consumer Solutions [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	$ 51
Shut Down and Consolidation of Dow Building and Construction Assets [Member] | Infrastructure Solutions [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	15
Write Down of Consumer Care Assets [Member] | Consumer Solutions [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	14
Shut Down of Dow Packaging and Specialty Plastics Facilities [Member] | Performance Plastics [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	12
Shut Down of Small Manufacturing Facilities [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	14
Shut Down of Small Manufacturing Facilities [Member] | Infrastructure Solutions [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	10
Shut Down of Small Manufacturing Facilities [Member] | Corporate Segment [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	4
Write Down of Certain Venture Capital Investments [Member] | Corporate Segment [Member] | Impairment of Long-Lived Assets, Other Investments and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets, Investments and Other Assets	55
Noncontrolling Interests [Member]
Restructuring Cost and Reserve [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest	(23)	$ 3	$ 18	$ 20
Noncontrolling Interests [Member] | 2Q15 Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest	$ (14)