Revenue Recognition - Summary Of Contract Liabilities, Consist Of Total Deferred Revenue And Customer Deposits (Parenthetical (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Disaggregation of Revenue [Line Items] | ||
| Contract with customer liability billings | $ 839,740 | $ 898,254 |
| Palantir Technologies Japan, K.K. [Member] | ||
| Disaggregation of Revenue [Line Items] | ||
| Contract with customer liability billings | $ 75,000 | |