Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 732	$ 731
Accumulated Amortization	(643)	(637)
Reseller & customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	321	321
Accumulated Amortization	$ (271)	$ (268)
Reseller & customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period (in Years)	1 year	1 year
Reseller & customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period (in Years)	20 years	20 years
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 347	$ 346
Accumulated Amortization	$ (310)	$ (307)
Intellectual property | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period (in Years)	2 years	2 years
Intellectual property | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period (in Years)	8 years	8 years
Tradenames
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 64	$ 64
Accumulated Amortization	$ (62)	$ (62)
Tradenames | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period (in Years)	1 year	1 year
Tradenames | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period (in Years)	10 years	10 years