v3.19.3

RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Jul. 31, 2019
--- | --- | ---
Related Party Transaction [Line Items] |  |
Lease executed but not yet commenced, term |  | 15 years 6 months
Lease executed but not yet commenced | $ 344,202 | $ 42,700
Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Lease executed but not yet commenced, term |  | 15 years 6 months
Lease executed but not yet commenced |  | $ 42,700

X
- Definition Lessee, Operating Lease, Liability, Lease Not Yet Commenced + References No definition available. + Details
Name: | sq_LesseeOperatingLeaseLiabilityLeaseNotYetCommenced
Namespace Prefix: | sq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |