Segment Information Geographic Areas (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended								11 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 13, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 7,293	$ 7,293				$ 6,601					$ 7,293	$ 6,601
Deferred tax assets for long-lived assets	39	39				35					39	35
Revenues	261	985	$ 1,314	$ 1,309	$ 1,346	1,429	$ 1,444	$ 1,448	$ 1,423	$ 4,954	4,954	5,744	$ 5,699
Long-lived Assets	2,448	2,448				2,188					2,448	2,188
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	753	753				809					753	809
Western Hemisphere [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													2,937
Long-lived Assets	1,049	1,049				1,190					1,049	1,190
Eastern Hemisphere [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													2,762
Long-lived Assets	1,399	1,399				998					1,399	998
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	1,200	1,200				1,600					1,200	1,600
Revenues													1,600
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													890
Long-lived Assets	296	296				381					296	381
MENA and Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	715	715				587					715	587
Europe/Sub-Sahara Africa/Russia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													$ 1,007
Long-lived Assets	684	684				411					684	411
Corporate, Non-Segment [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	387	387				513					387	513
Eastern Hemisphere [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	4,392	4,392				2,966					4,392	2,966
Western Hemisphere [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 2,514	$ 2,514				$ 3,122					$ 2,514	$ 3,122