Debt Instrument, Face Amount, Additional Principal Issuable

No definition available.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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- Details

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Debt Instruments - Convertible Senior Notes (Details) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 05, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) d $ / shares	Jun. 30, 2021 USD ($)	May 25, 2022 USD ($)
Debt Instrument [Line Items]
Issuance of convertible note, net of issuance costs				$ 0	$ 930,775
Net gain on extinguishment of debt		$ 54,391	$ 0	$ 54,391	$ 0
2026 Convertible Notes
Debt Instrument [Line Items]
Issuance of convertible note, net of issuance costs	$ 930,000
2026 Convertible Notes \| Common Stock—Class A
Debt Instrument [Line Items]
Debt instrument, convertible, conversion ratio				0.0097272
Debt instrument, convertible, conversion price (in dollars per share) \| $ / shares		$ 102.80		$ 102.80
2026 Convertible Notes \| Fastly Conversion Option
Debt Instrument [Line Items]
Debt instrument, convertible, threshold percentage of stock price trigger				130.00%
Debt instrument, convertible, threshold trading days \| d				20
Debt instrument, convertible, threshold consecutive trading days \| d				30
2026 Convertible Notes \| Holder Conversion Option One \| Common Stock—Class A
Debt Instrument [Line Items]
Debt instrument, convertible, threshold percentage of stock price trigger				130.00%
Debt instrument, convertible, threshold trading days \| d				20
Debt instrument, convertible, threshold consecutive trading days \| d				30
2026 Convertible Notes \| Holder Conversion Option Two \| Common Stock—Class A
Debt Instrument [Line Items]
Debt instrument, convertible, threshold percentage of stock price trigger				98.00%
Debt instrument, convertible, threshold trading days \| d				5
Debt instrument, convertible, threshold consecutive trading days \| d				10
Convertible Debt \| 2026 Convertible Notes
Debt Instrument [Line Items]
Debt Instrument, face amount	$ 948,800
Interest rate, stated percentage	0.00%
Debt instrument, face amount, additional principal issuable	$ 123,800
Discount and transaction costs	$ 18,600
Debt instrument, repurchased face amount						$ 235,000
Debt instrument, repurchase amount						$ 176,400
Convertible Debt \| 2026 Convertible Notes \| Fastly Conversion Option
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage				100.00%
Convertible Debt \| 2026 Convertible Notes \| Fundamental Change
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage				100.00%