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REVENUE RECOGNITION (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with Customer, Asset, Net	$ 57		$ 42
Income Statement [Abstract]
Sales	2,607	$ 2,303
Cost of sales	2,026	1,698
Gross Profit	581	605
Earnings before interest and taxes	409	401
Net earnings attributable to Eastman	$ 290	$ 278
Basic earnings per share attributable to Eastman	$ 2.03	$ 1.90
Diluted earnings per share attributable to Eastman	$ 2.00	$ 1.89
Balance Sheet Related Disclosures [Abstract]
Trade receivables, net of allowance for doubtful accounts	$ 1,430		1,026
Miscellaneous receivables	319		360
Inventories	1,476		1,509
Assets, Current	3,483		$ 3,143
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Income Statement [Abstract]
Sales	(30)
Cost of sales	(13)
Gross Profit	(17)
Earnings before interest and taxes	(17)
Net earnings attributable to Eastman	$ (14)
Basic earnings per share attributable to Eastman	$ (0.10)
Diluted earnings per share attributable to Eastman	$ (0.10)
Balance Sheet Related Disclosures [Abstract]
Trade receivables, net of allowance for doubtful accounts	$ (30)
Miscellaneous receivables	(2)
Inventories	15
Assets, Current	(17)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Additives And Functional Products [Member]
Income Statement [Abstract]
Sales	3
Earnings before interest and taxes	(3)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Advanced Materials [Member]
Income Statement [Abstract]
Sales	(20)
Earnings before interest and taxes	(10)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Chemical Intermediates [Member]
Income Statement [Abstract]
Sales	17
Earnings before interest and taxes	6
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Fibers [Member]
Income Statement [Abstract]
Sales	(30)
Earnings before interest and taxes	(10)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Corporate, Non-Segment [Member]
Income Statement [Abstract]
Earnings before interest and taxes	0
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Income Statement [Abstract]
Sales	2,577
Cost of sales	2,013
Gross Profit	564
Earnings before interest and taxes	392
Net earnings attributable to Eastman	$ 276
Basic earnings per share attributable to Eastman	$ 1.93
Diluted earnings per share attributable to Eastman	$ 1.90
Balance Sheet Related Disclosures [Abstract]
Trade receivables, net of allowance for doubtful accounts	$ 1,400
Miscellaneous receivables	317
Inventories	1,491
Assets, Current	3,466
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Additives And Functional Products [Member]
Income Statement [Abstract]
Sales	942
Earnings before interest and taxes	173
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Advanced Materials [Member]
Income Statement [Abstract]
Sales	673
Earnings before interest and taxes	125
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Chemical Intermediates [Member]
Income Statement [Abstract]
Sales	747
Earnings before interest and taxes	76
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Fibers [Member]
Income Statement [Abstract]
Sales	215
Earnings before interest and taxes	33
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Corporate, Non-Segment [Member]
Income Statement [Abstract]
Earnings before interest and taxes	(15)
Operating Segments [Member]
Income Statement [Abstract]
Sales	2,607	$ 2,290
Earnings before interest and taxes	424	408
Operating Segments [Member] | Additives And Functional Products [Member]
Income Statement [Abstract]
Sales	939	773
Earnings before interest and taxes	176	153
Operating Segments [Member] | Advanced Materials [Member]
Income Statement [Abstract]
Sales	693	634
Earnings before interest and taxes	135	121
Operating Segments [Member] | Chemical Intermediates [Member]
Income Statement [Abstract]
Sales	730	670
Earnings before interest and taxes	70	82
Operating Segments [Member] | Fibers [Member]
Income Statement [Abstract]
Sales	245	213
Earnings before interest and taxes	43	52
Corporate, Non-Segment [Member]
Income Statement [Abstract]
Sales	0	$ 13
Earnings before interest and taxes	(15)
Corporate, Non-Segment [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Income Statement [Abstract]
Sales	0
Corporate, Non-Segment [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Income Statement [Abstract]
Sales	$ 0

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