Restructuring and Asset Related Charges La Porte (Details) - Predecessor [Member] - USD ($) $ in Millions	2 Months Ended		3 Months Ended				8 Months Ended	12 Months Ended
	Aug. 31, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Aug. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net	$ 11		$ 160		$ 152		$ 323	$ 556
La Porte [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net								68
Asset Related Charges [Member] | La Porte [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net								41
Employee Severance [Member] | La Porte [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net								16
Contract Termination [Member] | La Porte [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net								$ 11

[1] See Note 6 for additional information.