Stockholders' Equity Reconciliation of Common Stock Share Activity (Details) - shares		4 Months Ended	8 Months Ended	12 Months Ended
		Dec. 31, 2017	Aug. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Predecessor [Member]
Class of Stock [Line Items]
Common Stock, Shares, Outstanding, Beginning Balance		868,338,000	950,044,000	958,388,000	992,020,000
Shares Issued During Period		0	5,335,000	4,808,000	5,932,000
Shares Repurchased and Retired During Period				(13,152,000)	(39,564,000)
Shares Retired During the Period			(87,041,000)
Common Stock, Shares, Outstanding, Ending Balance			868,338,000	950,044,000	958,388,000
Treasury Stock Shares, Beginning of Period		0	(87,041,000)	(87,041,000)	(87,041,000)
Treasury Stock Shares Repurchased During Period				(13,152,000)	(39,564,000)
Treasury Stock Shares Retired During Period			87,041,000	13,152,000	39,564,000
Treasury Stock Shares, End of Period			0	(87,041,000)	(87,041,000)
Successor [Member]
Class of Stock [Line Items]
Common Stock, Shares, Outstanding, Beginning Balance	[1]	100
Common Stock, Shares, Outstanding, Ending Balance	[1]	100	100
Treasury Stock Shares, Beginning of Period		0
Treasury Stock Shares, End of Period		0	0

[1] All of the company's issued and outstanding common stock at September 1, 2017 is held by the DowDuPont Inc.