Debt (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Schedule of Debt

The interest expense and amortization of debt issuance costs for the three and nine months ended September 30, 2018 and 2017, respectively, were as follows:

	Three months ended				Nine months ended
	September 30, 2018		September 30, 2017		September 30, 2018			September 30, 2017
			Predecessor					Predecessor
	Interest Expense	Amortization	Interest Expense	Amortization	Interest Expense		Amortization	Interest Expense	Amortization
Debt	7	1	5	—	20		1	14	—
Revolving credit facility	—	—	1	—	2		—	3	1
Gain on extinguishment of debt	—	—	—	—	(2	)	—	—	—