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Commitment and Contingencies - Other Information Related to Leases (Details) - Marketwise, LLC | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Lessee, Lease, Description [Line Items] |  |  |
Weighted average remaining lease term (in years) | 6 years 7 months 6 days | 7 years | 5 years 2 months 12 days
Weighted average discount rate (percent) | 7.10% | 7.20% | 6.70%

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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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