| Document and Entity Information | Feb. 07, 2022 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001837067 |
| Document Type | 8-K |
| Document Period End Date | Feb. 7, 2022 |
| Entity Registrant Name | NIGHTDRAGON ACQUISITION CORP. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40108 |
| Entity Tax Identification Number | 85-4249052 |
| Entity Address, Address Line One | 101 Second Street |
| Entity Address, Address Line Two | Suite 1275 |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94105 |
| City Area Code | (510) |
| Local Phone Number | 306-7780 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | SCALE units, each consisting of one share ofClass A common stock, $0.00001 par value, andone-fifth of one redeemable warrant |
| Trading Symbol | NDACU |
| Security Exchange Name | NASDAQ |
| Capital Unit, Class A [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Shares of Class A common stock included aspart of the SCALE units |
| Trading Symbol | NDAC |
| Security Exchange Name | NASDAQ |
| Units [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Redeemable warrants included as part of theSCALE units |
| Trading Symbol | NDACW |
| Security Exchange Name | NASDAQ |
