Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Business Combinations - Narrative (Details) - USD ($)		12 Months Ended
Business Combinations - Narrative (Details) - USD ($)	Nov. 08, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Gain from step acquisition		$ 0	$ 44,306,000	$ 0
Palantir Technologies Japan, K.K.
Business Acquisition [Line Items]
Fair value on acquisition date	$ 149,000,000
Equity interest immediately prior to the acquisition	74,500,000
Noncontrolling interest	74,500,000
Recognized identifiable assets acquired and liabilities assumed, cash	66,700,000
Goodwill	36,100,000
Recognized identifiable assets acquired and liabilities assumed, liabilities	$ 21,000,000
Goodwill recognized expected to be deductible for income tax purposes		$ 0
Gain from step acquisition			$ 44,300,000
Palantir Technologies Japan, K.K. \| Minimum
Business Acquisition [Line Items]
Amortization period of finite-intangible assets (in years)	2 years
Palantir Technologies Japan, K.K. \| Maximum
Business Acquisition [Line Items]
Amortization period of finite-intangible assets (in years)	7 years
Palantir Technologies Japan, K.K. \| Customer Relationships, Reacquired Rights, Backlog
Business Acquisition [Line Items]
Recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles	$ 34,700,000
Palantir Technologies Japan, K.K. \| Other
Business Acquisition [Line Items]
Recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles	$ 32,500,000
Palantir Technologies Japan, K.K.
Business Acquisition [Line Items]
Ownership percentage (in percent)	50.00%