Revenues - Geographic Areas (Details) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 13, 2019	Dec. 31, 2020	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	$ 261	$ 4,954	$ 3,685	$ 5,744
Revenues	261	4,954	3,685	5,744
Western Hemisphere [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	121	2,620	1,586	3,063
Western Hemisphere [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	68	1,548	889	1,987
Western Hemisphere [Member] | Latin America [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	53	1,072	697	1,076
Eastern Hemisphere [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	140	2,334	2,099	2,681
Eastern Hemisphere [Member] | Europe/Sub-Sahara Africa/Russia [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	$ 52	$ 907	$ 747	$ 965