Comprehensive Loss - Schedule of Amounts Reclassified Out of AOCL (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification, net of tax	$ 2	$ 8
Pension Plans, Defined Benefit [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification, Total before tax	(2)	(4)
Tax benefit		10
Reclassification, net of tax	(2)	6
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] | Pension Plans, Defined Benefit [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification, Total before tax	$ (2)	(1)
Accumulated Defined Benefit Plans Adjustment, Net Transition Attributable to Parent [Member] | Pension Plans, Defined Benefit [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification, Total before tax		$ (3)