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Commitments and Contingencies - Narratives (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract] |  |
Cost and expenses related to bandwidth and other co-location commitments | $ 25.8 | $ 16.4

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- Definition Long-Term Purchase Commitment Costs And Expenses + References No definition available. + Details
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Namespace Prefix: | cloud_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration