The amount of proceeds from business combination.

No definition available.

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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

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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 (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Number of shares for which recognition of cost was accelerated for award under share-based payment arrangement.

+ References

No definition available.

+ 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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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