Contingencies and Litigation - Other Pending Litigation - Narrative (Details) - USD ($) $ in Thousands	Mar. 18, 2022	Mar. 10, 2021	Dec. 13, 2019	Mar. 31, 2022
Performance Guarantee
Guarantor Obligations [Line Items]
Maximum exposure, undiscounted				$ 279,000
Xerox Holdings Corporation
Guarantor Obligations [Line Items]
Per-occurrence coverage		$ 1,000,000
Projected pandemic related losses		$ 300,000
Miami Firefighters Relief Pension Fund V. Icahn Et Al
Guarantor Obligations [Line Items]
Litigation settlement	$ 18,120
Miami Firefighters Relief Pension Fund V. Icahn Et Al | HP Inc.
Guarantor Obligations [Line Items]
Marketable securities, gain (loss)			$ 128,000