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: