Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Oct. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 0
Other comprehensive (loss) income before reclassifications	18
Amounts reclassified from accumulated other comprehensive loss	0
Net other comprehensive (loss) income	18
Ending balance	18	$ 0
Pension Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0
Other comprehensive (loss) income before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	0
Net other comprehensive (loss) income	0
Ending balance	0	0
Foreign Currency Translation Adjustments and Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0
Other comprehensive (loss) income before reclassifications	18
Amounts reclassified from accumulated other comprehensive loss	0
Net other comprehensive (loss) income	18
Ending balance	18	0
Predecessor
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(307)	(387)
Other comprehensive (loss) income before reclassifications		78
Amounts reclassified from accumulated other comprehensive loss		2
Net other comprehensive (loss) income		80	$ (86)	$ (154)
Ending balance		(307)	(387)
Predecessor | Pension Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(35)	(34)
Other comprehensive (loss) income before reclassifications		(3)
Amounts reclassified from accumulated other comprehensive loss		2
Net other comprehensive (loss) income		(1)
Ending balance		(35)	(34)
Predecessor | Foreign Currency Translation Adjustments and Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (272)	(353)
Other comprehensive (loss) income before reclassifications		81
Amounts reclassified from accumulated other comprehensive loss		0
Net other comprehensive (loss) income		81
Ending balance		$ (272)	$ (353)