Property and Equipment - Schedule of PPE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment	$ 187	$ 220
Less: Accumulated depreciation	(122)	(122)
Property and equipment, net	65	98
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 55	57
Furniture, fixtures, and equipment | Max
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Capitalized software costs
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 87	98
Capitalized software costs | Min
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Capitalized software costs | Max
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Software in development and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 12	26
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 27	31
Leasehold improvements | Min
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Leasehold improvements | Max
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Long-term finance leases - computer equipment
Property, Plant and Equipment [Line Items]
Long-term finance leases - computer equipment	$ 6	$ 8
Long-term finance leases - computer equipment | Min
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Long-term finance leases - computer equipment | Max
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years