Revenues Revenues - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 13, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 261	$ 4,954	$ 3,685		$ 5,744
Revenues	261	$ 4,954	3,685		5,744
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 59		$ 720	$ 1,300
Revenues					$ 1,600
Minimum
Disaggregation of Revenue [Line Items]
Product warranty period			1 year
Maximum
Disaggregation of Revenue [Line Items]
Product warranty period			5 years