Goodwill and Intangibles Level 4 (Details) - Rollforward of Goodwill - USD ($) $ in Millions			6 Months Ended			12 Months Ended
		Jul. 01, 2019	Dec. 31, 2019		Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, Beginning Balance						$ 164
Divestitures					$ 0
Elimination of Predecessor goodwill		$ (108)
Goodwill, Ending Balance			$ 164			164
Goodwill, Discontinued Operations			14			14
Coatings and Composites
Goodwill [Roll Forward]
Goodwill, Beginning Balance						37
Goodwill, Ending Balance			37			37
Adhesives
Goodwill [Roll Forward]
Goodwill, Beginning Balance	[1]					127
Goodwill, Ending Balance	[1]		127			127
Discontinued Operations
Goodwill [Roll Forward]
Elimination of Predecessor goodwill		(25)
Goodwill, Discontinued Operations			14			14	$ 25
Continuing Operations
Goodwill [Roll Forward]
Goodwill, Beginning Balance		83	0		84	164
Foreign currency translation					(1)
Elimination of Predecessor goodwill		(83)
Recognition of successor goodwill	[2]	164
Goodwill, Adjustments			0	[3]		0
Goodwill, Ending Balance		0	164		83	164
Continuing Operations | Coatings and Composites
Goodwill [Roll Forward]
Goodwill, Beginning Balance		41	0		41	37
Divestitures					0
Foreign currency translation					0
Elimination of Predecessor goodwill		(41)
Recognition of successor goodwill	[2]	37
Goodwill, Adjustments			0	[3]		0
Goodwill, Ending Balance		0	37		41	37
Continuing Operations | Adhesives
Goodwill [Roll Forward]
Goodwill, Beginning Balance	[4]	42	0		43	127
Divestitures	[4]				0
Foreign currency translation	[4]				(1)
Elimination of Predecessor goodwill	[4]	(42)
Recognition of successor goodwill	[2],[4]	127
Goodwill, Adjustments	[4]		0	[3]		0
Goodwill, Ending Balance	[4]	$ 0	$ 127		$ 42	$ 127

[1] Excludes $14 of goodwill in the Adhesives segment associated with the Held for Sale Business at both December 31, 2020 and 2019 (See Note 4).

[2] Recording of the Successor Company goodwill in accordance with the application of fresh start accounting. Refer to Note 6 for more details.

[3] There were no foreign currency adjustments nor impairments related to Successor Company goodwill for the year ended December 31, 2020 and the Successor period July 2, 2019 through December 31, 2019.

[4] Excludes $14 at both December 31, 2020 and 2019 and $25 at both June 30, 2019 and December 31, 2018 related in the Held for Sale Business (See Note 4).