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v3.22.2.2

Debt Instruments - Convertible Senior Notes (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Mar. 05, 2021 USD ($) | Sep. 30, 2022 USD ($) $ / shares | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) d $ / shares | Sep. 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 |  | $ 0 | $ 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% |  |

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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031898-161870 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 + Details
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