Property and Equipment - Schedule of PPE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment	$ 220	$ 205
Less: Accumulated depreciation	(122)	(92)
Property and equipment, net	98	113
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 57	55
Furniture, fixtures, and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Furniture, fixtures, and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Capitalized software costs
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 98	80
Capitalized software costs | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Capitalized software costs | Maximum
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	$ 26	29
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 31	33
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Leasehold improvements | Maximum
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	$ 8	$ 8
Estimated Useful Life	5 years