BITCOIN - Changes in Bitcoin Investment (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025 USD ($) bitcoin	Mar. 31, 2025 USD ($) bitcoin	Jun. 30, 2024 USD ($) bitcoin	Mar. 31, 2024 USD ($) bitcoin	Jun. 30, 2025 USD ($) bitcoin	Jun. 30, 2024 USD ($) bitcoin
Crypto Asset [Roll Forward]
Amount of bitcoin, beginning balance (in Bitcoin) \| bitcoin	8,584	8,485	8,038	8,038	8,485	8,038
Value, beginning balance	$ 708,450	$ 792,282	$ 573,302	$ 339,898	$ 792,282	$ 339,898
Additions (in Bitcoin) \| bitcoin	108	99	173
Additions	$ 11,041	$ 9,519	$ 11,398
Remeasurement gain (loss)	$ 212,165	$ (93,351)	$ (70,116)	$ 233,404	$ 118,814	$ 163,288
Amount of bitcoin, ending balance (in Bitcoin) \| bitcoin	8,692	8,584	8,211	8,038	8,692	8,211
Value, ending balance	$ 931,656	$ 708,450	$ 514,584	$ 573,302	$ 931,656	$ 514,584

Crypto Asset, Bitcoin Addition

No definition available.

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Namespace Prefix:	sq_
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- Definition

Amount of increase in crypto asset from addition. Excludes crypto asset held for platform user.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476162/350-60-50-3

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fair value of crypto asset. Excludes crypto asset held for platform user.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476162/350-60-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476162/350-60-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476162/350-60-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476163/350-60-45-1

+ Details

Name:	us-gaap_CryptoAssetFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of restricted and unrestricted crypto asset units held. Excludes crypto asset units held for platform user.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476162/350-60-50-1

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of realized gain (loss) from remeasurement of crypto asset, classified as nonoperating. Excludes crypto asset held for platform user.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476163/350-60-45-2

+ Details

Name:	us-gaap_CryptoAssetRealizedGainLossNonoperating
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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