Consolidated Statements of Equity - USD ($) $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent		Treasury Stock [Member]	Noncontrolling Interest [Member]	Parent Company [Member] Retained Earnings [Member]
Beginning Balance (Predecessor [Member]) at Dec. 31, 2014	$ 13,378	$ 237	$ 298	$ 11,174	$ 16,894	$ (8,556)		$ (6,727)	$ 58
Net income | Predecessor [Member]	1,959				1,953				6
Net other comprehensive income (loss) | Predecessor [Member]	(1,308)					(1,308)
Dividends, Common Stock | Predecessor [Member]	(1,546)				(1,542)				(4)
Dividends, Preferred Stock | Predecessor [Member]	(10)				(10)
Stock Issued During Period, Value, Share-Based Compensation and Adjustments to APIC, Share-Based Compensation | Predecessor [Member]	361		2	359
Common stock repurchased | Predecessor [Member]	(2,353)							(2,353)
Common stock retired | Predecessor [Member]	0		(12)	(451)	(1,890)			2,353
Spin-off of Chemours | Predecessor [Member]	(431)				(895)	468			(4)
Consolidation of a joint venture | Predecessor [Member]	150			(1)					151
Ending Balance (Predecessor [Member]) at Dec. 31, 2015	10,200	237	288	11,081	14,510	(9,396)		(6,727)	207
Net income | Predecessor [Member]	2,525				2,513				12
Net other comprehensive income (loss) | Predecessor [Member]	(515)					(515)
Dividends, Common Stock | Predecessor [Member]	(1,347)				(1,331)				(16)
Dividends, Preferred Stock | Predecessor [Member]	(10)				(10)
Stock Issued During Period, Value, Share-Based Compensation and Adjustments to APIC, Share-Based Compensation | Predecessor [Member]	268		1	267
Common stock repurchased | Predecessor [Member]	(916)							(916)
Common stock retired | Predecessor [Member]	0		(4)	(154)	(758)			916
Sale of a majority interest in consolidated subsidiary | Predecessor [Member]	(9)			(4)					(5)
Ending Balance (Predecessor [Member]) at Dec. 31, 2016	10,196	237	285	11,190	14,924	(9,911)		(6,727)	198
Net income | Predecessor [Member]	1,761				1,741				20
Net other comprehensive income (loss) | Predecessor [Member]	1,289					1,289
Dividends, Common Stock | Predecessor [Member]	(995)				(991)				(4)
Dividends, Preferred Stock | Predecessor [Member]	(7)				(7)
Stock Issued During Period, Value, Share-Based Compensation and Adjustments to APIC, Share-Based Compensation | Predecessor [Member]	275		2	273
Common stock retired | Predecessor [Member]	0		(26)	(1,044)	(5,657)			6,727
Sale of a majority interest in consolidated subsidiary | Predecessor [Member]	(2)								(2)
Ending Balance (Predecessor [Member]) at Aug. 31, 2017	12,517	237	261	10,419	10,010	(8,622)		0	212
Ending Balance (Successor [Member]) at Aug. 31, 2017	75,081	239	0	74,680	0	0	[1]	0	162
Net income | Successor [Member]	1,010				1,010				0
Net other comprehensive income (loss) | Successor [Member]	(381)					(381)
Dividends, Preferred Stock | Successor [Member]	(3)				(3)
Distributions to DowDuPont | Successor [Member]	(829)									$ (829)
Issuance of DowDuPont stock | Successor [Member]	30			30
Stock-based compensation | Successor [Member]	36			36
Stockholders' Equity, Other | Successor [Member]	(11)			(19)	(3)				11
Sale of a majority interest in consolidated subsidiary | Successor [Member]	(4)								(4)
Consolidation of a joint venture | Successor [Member]	3								3
Ending Balance (Successor [Member]) at Dec. 31, 2017	$ 74,932	$ 239	$ 0	$ 74,727	$ 175	$ (381)		$ 0	$ 172

[1] In connection with the Merger, balances in accumulated other comprehensive loss at Merger Effectiveness Time were eliminated as a result of reflecting the balance sheet at fair value as of the date of the Merger. See Note 3 and 16 for further information regarding the Merger and pension and OPEB plans, respectively.