CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Millions	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Oct. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
NET (LOSS) INCOME	$ (141)	$ 425	$ (3,201)	$ 341
OTHER COMPREHENSIVE (LOSS) INCOME:
Defined benefit pension plan adjustment, net of $1, ($1), $— and ($3) tax	0	(1)	(3)	5
Foreign currency translation adjustment, net of ($6), $50, ($17) and ($46) tax	18	81	(5)	(200)
Net other comprehensive (loss) income	18	80	(8)	(195)
COMPREHENSIVE (LOSS) INCOME	$ (123)	$ 505	$ (3,209)	$ 146