Contingencies and Litigation - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 13, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 10, 2021
Loss Contingencies [Line Items]
Product warranty expense		$ 8	$ 8	$ 12
Product warranty accrual		6	$ 6
Xerox Holdings Corporation
Loss Contingencies [Line Items]
Breach of contract, per-occurrence coverage, amount					$ 1,000
Business interruption, projected losses					$ 300
Miami Firefighters' Relief & Pension Fund V. Icahn, Et Al | HP Inc.
Loss Contingencies [Line Items]
Marketable securities, gain (loss)	$ 128
Contractual and Corporate Obligations Guarantee and surety bonds
Loss Contingencies [Line Items]
Guarantor obligations, maximum exposure, undiscounted		$ 292