Products and Services Revenues - Revenue from Geographic Region (Details) - USD ($) $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended							10 Months Ended	12 Months Ended
	Oct. 31, 2017	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Oct. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets		$ 33,135									$ 33,135
Revenues		1,407									8,277
Predecessor
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets						$ 24,888						$ 24,888
Revenues	$ 701		$ 2,059	$ 2,062	$ 2,048	$ 2,032	$ 2,033	$ 2,057	$ 2,051	$ 6,870		$ 8,173	$ 8,230
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets		27,776									27,776
Revenues		1,155
North America | Predecessor
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										5,651
EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets		1,192									1,192
Revenues		128
EMEA | Predecessor
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										607
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets		4,167									$ 4,167
Revenues		$ 124
Latin America | Predecessor
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										$ 612