Intangible Assets and Goodwill - Summary of intangible assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Intangible assets
Gross carrying amount, finite-lived intangible assets	$ 2,833	$ 2,833
Accumulated Amortization, finite-lived intangible assets	(2,434)	(2,269)
Net, finite-lived intangible assets	399	564
Customer relationships
Intangible assets
Gross carrying amount, finite-lived intangible assets	2,220	2,232
Accumulated Amortization, finite-lived intangible assets	(1,950)	(1,814)
Net, finite-lived intangible assets	270	418
Intellectual property
Intangible assets
Gross carrying amount, finite-lived intangible assets	496	484
Accumulated Amortization, finite-lived intangible assets	(401)	(380)
Net, finite-lived intangible assets	95	104
Other
Intangible assets
Gross carrying amount, finite-lived intangible assets	117	117
Accumulated Amortization, finite-lived intangible assets	(83)	(75)
Net, finite-lived intangible assets	$ 34	$ 42