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Subsequent Events (Details) - BFLY Operations Inc - USD ($) $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 12, 2021 | Feb. 11, 2021 | Jan. 23, 2021 | Dec. 31, 2020
Subsequent Event [Line Items] |  |  |  |
Vesting period (in years) |  |  |  | 4 years
Gross proceeds from business combination | $ 589 |  |  |
Restricted stock units |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Granted (in shares) |  |  |  | 1,825,000
Restricted stock units | Non-employees |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Granted (in shares) |  |  |  | 1,000,000
Subsequent Event [Member] | Longview Acquisition Corp |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Gross proceeds from business combination | $ 589 |  |  |
Subsequent Event [Member] | Options |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Acceleration of awards |  |  | 1,500,000 |
Vesting period (in years) |  |  | 4 years |
Subsequent Event [Member] | Options | Non-employees | Chief Executive Officer [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Equity compensation, awards to purchase Common Stock |  |  | 1,500,000 |
Subsequent Event [Member] | Restricted stock units | Employees |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Vesting period (in years) |  | 4 years | 4 years |
Granted (in shares) |  | 400,000 |  |
Subsequent Event [Member] | Restricted stock units | Non-employees | Chief Executive Officer [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Equity compensation, awards to purchase Common Stock |  |  | 1,000,000 |

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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