Intangible Assets and Goodwill - Amortized Intangible Assets, Excluding Goodwill, By Business Segment (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,710	$ 2,701
Accumulated Amortization	1,493	1,359
Products and Systems Integration
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	912	913
Accumulated Amortization	319	261
Software and Services
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,798	1,788
Accumulated Amortization	$ 1,174	$ 1,098