Goodwill and Other Intangible Assets - Schedule of other intangible assets by asset class (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,244	$ 2,657
Accumulated Amortization and Impairment	2,010	2,210
Total	234	447
Amortization and impairment of intangible assets	89	113	$ 147
Disposal Group, Not Discontinued Operations
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net, as assets held for sale	158
Customer-related and contract-based
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,873	2,207
Accumulated Amortization and Impairment	1,686	1,833
Total	187	374
Technology and other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	371	450
Accumulated Amortization and Impairment	324	377
Total	$ 47	$ 73