Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Income Statement [Abstract]
Revenue	$ 1,935,464	$ 1,003,697	$ 3,568,047	$ 1,887,552
Cost of revenue	296,870	192,934	512,668	365,904
Gross profit	1,638,594	810,763	3,055,379	1,521,648
Operating expenses:
Sales and marketing	339,500	243,788	658,720	480,097
Research and development	192,513	135,043	353,494	269,932
General and administrative	194,577	162,615	377,163	326,254
Total operating expenses	726,590	541,446	1,389,377	1,076,283
Income from operations	912,004	269,317	1,666,002	445,365
Interest income	77,505	56,255	143,899	106,696
Other income (expense), net	91,836	6,596	160,045	3,423
Income before provision for income taxes	1,081,345	332,168	1,969,946	555,484
Provision for income taxes	15,383	3,596	27,582	9,195
Net income	1,065,962	328,572	1,942,364	546,289
Less: Net income attributable to noncontrolling interests	4,072	1,845	9,947	5,531
Net income attributable to common stockholders	$ 1,061,890	$ 326,727	$ 1,932,417	$ 540,758
Earnings per share attributable to common stockholders, basic	$ 0.44	$ 0.14	$ 0.81	$ 0.23
Earnings per share attributable to common stockholders, diluted	$ 0.41	$ 0.13	$ 0.75	$ 0.21
Weighted-average shares of common stock outstanding used in computing earnings per share attributable to common stockholders, basic	2,399,820	2,365,196	2,396,861	2,356,983
Weighted-average shares of common stock outstanding used in computing earnings per share attributable to common stockholders, diluted	2,568,694	2,562,912	2,569,826	2,557,911

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Operating activities
Net income	$ 1,942,364	$ 546,289
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Depreciation and amortization	14,985	13,152
Stock-based compensation	466,801	315,310
Unrealized and realized (gain) loss from marketable securities, net	(62,242)	(452)
Other operating activities	(85,582)	2,092
Changes in operating assets and liabilities:
Accounts receivable, net	(433,801)	(163,501)
Prepaid expenses and other assets	(53,906)	(7,307)
Accounts payable and accrued liabilities	88,097	48,202
Contract liabilities	256,528	120,666
Other liabilities	(17,912)	(24,937)
Net cash provided by operating activities	2,115,332	849,514
Investing activities
Purchases of property and equipment	(21,955)	(13,818)
Purchases of marketable securities	(3,505,299)	(2,576,231)
Proceeds from sales and redemption of marketable securities	2,017,589	652,762
Other investing activities	0	(70,000)
Net cash used in investing activities	(1,509,665)	(2,007,287)
Financing activities
Proceeds from the exercise of common stock options	9,757	95,201
Other financing activities	(1,379)	(117,648)
Net cash provided by (used in) financing activities	8,378	(22,447)
Effect of foreign exchange on cash, cash equivalents, and restricted cash	(2,112)	11,518
Net increase (decrease) in cash, cash equivalents, and restricted cash	611,933	(1,168,702)
Cash, cash equivalents, and restricted cash - beginning of period	1,451,425	2,119,936
Cash, cash equivalents, and restricted cash - end of period	$ 2,063,358	$ 951,234

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 2,030,047	$ 1,423,796
Marketable securities	7,379,052	5,753,247
Accounts receivable, net	1,485,249	1,042,065
Prepaid expenses and other current assets	205,165	139,066
Total current assets	11,099,513	8,358,174
Property and equipment, net	61,403	51,960
Operating lease right-of-use assets	230,268	200,105
Other assets	287,380	290,153
Total assets	11,678,564	8,900,392
Current liabilities:
Accounts payable, accrued liabilities, and other	504,070	409,552
Deferred revenue	579,437	408,963
Customer deposits	452,075	357,066
Total current liabilities	1,535,582	1,175,581
Deferred revenue, noncurrent	33,722	46,216
Customer deposits, noncurrent	537	18
Operating lease liabilities, noncurrent	211,400	183,474
Other noncurrent liabilities	12,439	7,092
Total liabilities	1,793,680	1,412,381
Commitments and Contingencies (Note 7)
Palantir's stockholders’ equity:
Common stock, $0.001 par value	2,403	2,391
Additional paid-in capital	11,408,867	10,933,325
Accumulated other comprehensive income (loss), net	(7,103)	13,942
Accumulated deficit	(1,629,973)	(3,562,390)
Total Palantir's stockholders’ equity	9,774,194	7,387,268
Noncontrolling interests	110,690	100,743
Total equity	9,884,884	7,488,011
Total liabilities and equity	$ 11,678,564	$ 8,900,392