| Cover | 12 Months Ended |
| Dec. 31, 2022 | |
| Document Information [Line Items] | |
| Document Type | DEF 14A |
| Amendment Flag | false |
| Entity Information [Line Items] | |
| Entity Registrant Name | UDEMY, INC. |
| Entity Central Index Key | 0001607939 |
| Pay vs Performance Disclosure - USD ($) | 12 Months Ended | |
| Dec. 31, 2022 | Dec. 31, 2021 | |
| Pay vs Performance Disclosure [Table] | ||
| Pay vs Performance [Table Text Block] | Pay Versus Performance In accordance with Item 402(v) of Regulation S-K, year-end “pay-for-performance” Value of Initial Fixed $100 Year (1) Summary Compensation (2) Average Non-PEO Average to Non-PEO (3) Total (4) Peer Group (5) Net Income ($) (6) Revenue ($) (7) (a) (b) (c) (d) (e) (f) (g) (h) (i) 2022 827,481 (15,622,773) 5,232,058 3,321,491 38 68 (153,875,000) 629,097,000 2021 8,119,586 44,992,372 10,721,755 12,875,733 71 106 (80,026,000) 515,657,000 (1) The named executive officers included in the above table were: Year Principal Executive Non-PEO Named Executive 2022 Gregg Coccari Sarah Blanchard, Greg Brown, 2021 Gregg Coccari Sarah Blanchard and Velayudhan (2) The compensation actually paid to our PEO reflects the following adjustments required by applicable SEC rules from total compensation reported in the Summary Compensation Table: 2021 2022 Summary Compensation Table Total Compensation for PEO (a) $ 8,119,586 $ 827,481 - Grant Date Fair Value of Stock Awards and Option Awards Granted in Fiscal Year (b) 7,285,517 — + Fair Value at Fiscal Year End of Outstanding and Unvested Stock Awards and Option Awards Granted in Fiscal Year (c) 5,150,470 — + Change in Fair Value of Outstanding and Unvested Stock Awards and Option Awards Granted in Prior Fiscal Years (d) 16,901,011 (7,352,637) + Fair Value at Vesting of Stock Awards and Option Awards Granted in Fiscal Year That Vested During Fiscal Year (e) — — + Change in Fair Value as of Vesting Date of Stock Awards and Option Awards Granted in Prior Fiscal Years for Which Applicable Vesting Conditions Were Satisfied During Fiscal Year (f) 22,106,821 (9,097,618) - Fair Value as of Prior Fiscal Year End of Stock Awards and Option Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year (g) — — = Compensation Actually Paid $ 44,992,372 $ (15,622,773) For purposes of the adjustments to determine “compensation actually paid”, we computed the fair value of the stock option awards and RSUs in accordance with ASC 718 at the end of the relevant fiscal year, other than fair values of equity awards that vested within 2022 and 2021, which are valued as of the applicable vesting date. The valuation assumptions used in the calculations of such amounts are set forth in the notes to our audited financial statements included in our Annual Report. (3) The average compensation actually paid to our non-PEO 2021 2022 Average Summary Compensation Table Total Compensation for Non-PEO (a) $ 10,721,755 $ 5,232,058 - Grant Date Fair Value of Stock Awards and Option Awards Granted in Fiscal Year (b) 10,240,286 4,631,799 + Fair Value at Fiscal Year End of Outstanding and Unvested Stock Awards and Option Awards Granted in Fiscal Year (c) 9,304,017 3,761,186 + Change in Fair Value of Outstanding and Unvested Stock Awards and Option Awards Granted in Prior Fiscal Years (d) 1,351,197 (1,085,448) + Fair Value at Vesting of Stock Awards and Option Awards Granted in Fiscal Year That Vested During Fiscal Year (e) — 5,076,319 + Change in Fair Value as of Vesting Date of Stock Awards and Option Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year (f) 1,739,051 (1,193,937) - Fair Value as of Prior Fiscal Year End of Stock Awards and Option Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year (g) — 3,836,888 = Average Compensation Actually Paid to Non-PEO $ 12,875,733 $ 3,321,491 For purposes of the adjustments to determine “compensation actually paid”, we computed the fair value of the stock option awards and restricted stock units in accordance with ASC 718 at the end of the relevant fiscal year, other than fair values of equity awards that vested within 2022 and 2021, which (4) Total shareholder return is calculated by assuming that a $100 investment was made on at the close of trading on the first full day of trading of our common stock (October 29, 2021) and reinvesting all dividends until the last day of each reported fiscal year. (5) The peer group used is the Nasdaq Computer Index, as used in the performance graph shown in our annual report. Total shareholder return is calculated by assuming that a $100 investment was made at the close of trading on the first full day of trading of our stock (October 29, 2021) and reinvesting all dividends until the last day of each reported fiscal year. (6) The dollar amounts reported are our net income (loss) reflected in our audited financial statements. (7) In our assessment, revenue is the most important financial performance measure (other than stock price) that we used in 2022 to link compensation actually paid to performance. The dollar amounts reported show our revenue as reflected in the audited financial statements included in our Annual Report. | |
| Company Selected Measure Name | revenue | |
| Named Executive Officers, Footnote [Text Block] | (1) The named executive officers included in the above table were: Year Principal Executive Non-PEO Named Executive 2022 Gregg Coccari Sarah Blanchard, Greg Brown, 2021 Gregg Coccari Sarah Blanchard and Velayudhan | |
| Peer Group Issuers, Footnote [Text Block] | The peer group used is the Nasdaq Computer Index, as used in the performance graph shown in our annual report. Total shareholder return is calculated by assuming that a $100 investment was made at the close of trading on the first full day of trading of our stock (October 29, 2021) and reinvesting all dividends until the last day of each reported fiscal year. | |
| PEO Total Compensation Amount | $ 827,481 | $ 8,119,586 |
| PEO Actually Paid Compensation Amount | $ (15,622,773) | 44,992,372 |
| Adjustment To PEO Compensation, Footnote [Text Block] | (2) The compensation actually paid to our PEO reflects the following adjustments required by applicable SEC rules from total compensation reported in the Summary Compensation Table: 2021 2022 Summary Compensation Table Total Compensation for PEO (a) $ 8,119,586 $ 827,481 - Grant Date Fair Value of Stock Awards and Option Awards Granted in Fiscal Year (b) 7,285,517 — + Fair Value at Fiscal Year End of Outstanding and Unvested Stock Awards and Option Awards Granted in Fiscal Year (c) 5,150,470 — + Change in Fair Value of Outstanding and Unvested Stock Awards and Option Awards Granted in Prior Fiscal Years (d) 16,901,011 (7,352,637) + Fair Value at Vesting of Stock Awards and Option Awards Granted in Fiscal Year That Vested During Fiscal Year (e) — — + Change in Fair Value as of Vesting Date of Stock Awards and Option Awards Granted in Prior Fiscal Years for Which Applicable Vesting Conditions Were Satisfied During Fiscal Year (f) 22,106,821 (9,097,618) - Fair Value as of Prior Fiscal Year End of Stock Awards and Option Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year (g) — — = Compensation Actually Paid $ 44,992,372 $ (15,622,773) For purposes of the adjustments to determine “compensation actually paid”, we computed the fair value of the stock option awards and RSUs in accordance with ASC 718 at the end of the relevant fiscal year, other than fair values of equity awards that vested within 2022 and 2021, which are valued as of the applicable vesting date. The valuation assumptions used in the calculations of such amounts are set forth in the notes to our audited financial statements included in our Annual Report. | |
| Non-PEO NEO Average Total Compensation Amount | $ 5,232,058 | 10,721,755 |
| Non-PEO NEO Average Compensation Actually Paid Amount | $ 3,321,491 | 12,875,733 |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | (3) The average compensation actually paid to our non-PEO 2021 2022 Average Summary Compensation Table Total Compensation for Non-PEO (a) $ 10,721,755 $ 5,232,058 - Grant Date Fair Value of Stock Awards and Option Awards Granted in Fiscal Year (b) 10,240,286 4,631,799 + Fair Value at Fiscal Year End of Outstanding and Unvested Stock Awards and Option Awards Granted in Fiscal Year (c) 9,304,017 3,761,186 + Change in Fair Value of Outstanding and Unvested Stock Awards and Option Awards Granted in Prior Fiscal Years (d) 1,351,197 (1,085,448) + Fair Value at Vesting of Stock Awards and Option Awards Granted in Fiscal Year That Vested During Fiscal Year (e) — 5,076,319 + Change in Fair Value as of Vesting Date of Stock Awards and Option Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year (f) 1,739,051 (1,193,937) - Fair Value as of Prior Fiscal Year End of Stock Awards and Option Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year (g) — 3,836,888 = Average Compensation Actually Paid to Non-PEO $ 12,875,733 $ 3,321,491 For purposes of the adjustments to determine “compensation actually paid”, we computed the fair value of the stock option awards and restricted stock units in accordance with ASC 718 at the end of the relevant fiscal year, other than fair values of equity awards that vested within 2022 and 2021, which | |
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | ||
| Compensation Actually Paid vs. Net Income [Text Block] | ||
| Compensation Actually Paid vs. Company Selected Measure [Text Block] | ||
| Total Shareholder Return Vs Peer Group [Text Block] | ||
| Tabular List [Table Text Block] | Tabular List of Financial Performance Measures The financial performance measures listed below represent all of the financial performance measures that actually Revenue Adjusted EBITDA Margin Udemy Business Annual Recurring Revenue Adjusted EBITDA Margin and Udemy Business Annual Recurring Revenue are non-GAAP Non-GAAP | |
| Total Shareholder Return Amount | $ 38 | 71 |
| Peer Group Total Shareholder Return Amount | 68 | 106 |
| Net Income (Loss) | $ (153,875,000) | $ (80,026,000) |
| Company Selected Measure Amount | 629,097,000 | 515,657,000 |
| PEO Name | Gregg Coccari | |
| Measure [Axis]: 1 | ||
| Pay vs Performance Disclosure [Table] | ||
| Measure Name | Revenue | |
| Non-GAAP Measure Description [Text Block] | In our assessment, revenue is the most important financial performance measure (other than stock price) that we used in 2022 to link compensation actually paid to performance. The dollar amounts reported show our revenue as reflected in the audited financial statements included in our Annual Report. | |
| Measure [Axis]: 2 | ||
| Pay vs Performance Disclosure [Table] | ||
| Measure Name | Adjusted EBITDA Margin | |
| Measure [Axis]: 3 | ||
| Pay vs Performance Disclosure [Table] | ||
| Measure Name | Udemy Business Annual Recurring Revenue | |
| PEO [Member] | Grant Date Fair Value of Stock Awards and Option Awards Granted in Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | $ 0 | $ (7,285,517) |
| PEO [Member] | Fair Value at Fiscal Year End of Outstanding and Unvested Stock Awards and Option Awards Granted in Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 0 | 5,150,470 |
| PEO [Member] | Change in Fair Value of Outstanding and Unvested Stock Awards and Option Awards Granted in Prior Fiscal Years [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | (7,352,637) | 16,901,011 |
| PEO [Member] | Fair Value at Vesting of Stock Awards and Option Awards Granted in Fiscal Year That Vested During Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 0 | 0 |
| PEO [Member] | Change in Fair Value as of Vesting Date of Stock Awards and Option Awards Granted in Prior Fiscal Years for Which Applicable Vesting Conditions Were Satisfied During Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | (9,097,618) | 22,106,821 |
| PEO [Member] | Fair Value as of Prior Fiscal Year End of Stock Awards and Option Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 0 | 0 |
| Non-PEO NEO [Member] | Grant Date Fair Value of Stock Awards and Option Awards Granted in Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | (4,631,799) | (10,240,286) |
| Non-PEO NEO [Member] | Fair Value at Fiscal Year End of Outstanding and Unvested Stock Awards and Option Awards Granted in Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 3,761,186 | 9,304,017 |
| Non-PEO NEO [Member] | Change in Fair Value of Outstanding and Unvested Stock Awards and Option Awards Granted in Prior Fiscal Years [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | (1,085,448) | 1,351,197 |
| Non-PEO NEO [Member] | Fair Value at Vesting of Stock Awards and Option Awards Granted in Fiscal Year That Vested During Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 5,076,319 | 0 |
| Non-PEO NEO [Member] | Change in Fair Value as of Vesting Date of Stock Awards and Option Awards Granted in Prior Fiscal Years for Which Applicable Vesting Conditions Were Satisfied During Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | (1,193,937) | 1,739,051 |
| Non-PEO NEO [Member] | Fair Value as of Prior Fiscal Year End of Stock Awards and Option Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | $ (3,836,888) | $ 0 |
