Technology Agreements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Technology Agreements [Abstract]
Information Technology and Data Processing	$ 28	$ 181	$ 103
Technology Agreements
Technology Agreements, Minimum Payments Due [Abstract]
Long Term Purchase Commitment Technology Agreement - Current	18
Long Term Purchase Commitment Technology Agreement Future Minimum Payments Due, Year 2	14
Long Term Purchase Commitment Technology Agreement Future Minimum Payments Due, Year 3	13
Long Term Purchase Commitment Technology Agreement Future Minimum Payments Due, Year 4	12
Long Term Purchase Commitment Technology Agreement Future Minimum Payments Due, Year 5	0
Long Term Purchase Commitment Technology Agreement Future Minimum Payments Due, Thereafter	$ 0