DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying interim condensed consolidated financial statements of the Company are unaudited. These interim condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") and the applicable rules and regulations of the Securities and Exchange Commission ("SEC") for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The December 31, 2023 condensed consolidated balance sheet was derived from the audited financial statements as of that date, but does not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The accompanying unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and, in the opinion of management, reflect all adjustments of a normal recurring nature considered necessary to state fairly the Company's consolidated financial position, results of operations, comprehensive income (loss), and cash flows for the interim periods. The condensed consolidated financial statements include the financial statements of Block and its wholly-owned and majority-owned subsidiaries, including variable interest entities for which the Company is deemed to be the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation. Minority interests are recorded as a noncontrolling interest, which is reported as a component of stockholders' equity on the condensed consolidated balance sheets. The interim results for the three and six months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024, or for any other future annual or interim period. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Consolidated Financial Statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2023.
Recent Accounting Pronouncements	Adoption of ASU 2023-08 and Recasting of Prior Period The Company early adopted ASU No. 2023-08, Accounting for and Disclosure of Crypto Assets ("ASU 2023-08"), in the fourth quarter of 2023 using a modified retrospective approach. ASU 2023-08 provides guidance on accounting and disclosure of crypto assets and requires an entity to (i) subsequently remeasure crypto assets at fair value at each measurement date with changes recognized in net income, (ii) present the changes in fair value separately from changes in the carrying amount of other intangible assets in the income statement, and (iii) present crypto assets measured at fair value separately from other intangible assets on the balance sheet. Prior to the adoption of ASU 2023-08, the Company's bitcoin investment was subject to impairment losses if the fair value decreased below the carrying value during the assessed period. Impairment losses on the Company's bitcoin investment could not be recovered for any subsequent increases in fair value until the asset was sold. Upon adoption of ASU 2023-08, the Company recognized a cumulative-effect adjustment increasing bitcoin value and retained earnings by $30.5 million as of the beginning of fiscal year 2023. The adoption of ASU 2023-08 using a modified retrospective approach requires the Company to adopt the standard as of January 1, 2023. Recent Accounting Pronouncements Recently Issued Accounting Pronouncements Not Yet Adopted In November 2023, the Financial Accounting Standards Board ("FASB") issued ASU No. 2023-07, Improvements to Reportable Segment Disclosures (“ASU 2023-07”). The amendments expand segment disclosures by requiring disclosure of significant segment expenses that are regularly provided to the Company's chief operating decision maker ("CODM"), the amount and description of other segment items, permits companies to disclose more than one measure of segment profit or loss, and requires all annual segment disclosures to be included in the interim periods. The amendments do not change how an entity identifies its operating segments, aggregates those operating segments, or applies quantitative thresholds to determine its reportable segments. The amendments are effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of ASU 2023-07 will impact the Company’s disclosures only, and the Company is evaluating the effect of adopting the new disclosure requirements. In December 2023, the FASB issued ASU No. 2023-09, Improvements to Income Tax Disclosures (“ASU 2023-09”). The amendments expand income tax disclosure requirements by requiring an entity to disclose (i) specific categories in the rate reconciliation, (ii) additional information for reconciling items that meet a quantitative threshold, and (iii) the amount of taxes paid disaggregated by jurisdiction. The amendments are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of ASU 2023-09 will impact the Company’s disclosures only and the Company is evaluating the effect of adopting the new disclosure requirements. In March 2024, the SEC adopted rules that require registrants to provide climate-related information in their registration statements and annual reports, such as disclosure of material climate-related risks, Board of Directors’ oversight and risk management activities, material greenhouse gas emissions, and material climate-related targets and goals. The rules will also require registrants to quantify certain effects of severe weather events and other natural conditions in their audited financial statements. As adopted, the new rules will be effective for fiscal years beginning in 2025, except for the greenhouse gas emissions disclosures, which will be effective for fiscal years beginning in 2026. On April 4, 2024, the SEC voluntarily stayed the implementation of the rules pending the judicial review of challenges to the rules in the Eighth Circuit Court of Appeals. The Company is currently evaluating the effect of adopting these new rules.
Use of Estimates	Use of Estimates The preparation of the Company’s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, and expenses, as well as related disclosure of contingent assets and liabilities. Actual results could differ from the Company’s estimates. To the extent that there are material differences between these estimates and actual results, the Company’s financial condition or operating results will be materially affected. The Company bases its estimates on current and past experience, to the extent that historical experience is predictive of future performance and other assumptions that the Company believes are reasonable under the circumstances. The Company evaluates these estimates on an ongoing basis. Estimates, judgments, and assumptions in these condensed consolidated financial statements include, but are not limited to, those related to accrued transaction losses, contingencies, including outcomes from claims and disputes, valuation of loans held for sale, valuation of goodwill and acquired intangible assets, determination of goodwill impairment charges, determination of allowance for loan loss reserves for loans held for investment, determination of allowance for credit losses for consumer receivables, allocation of acquired goodwill to reporting units, income and other taxes, operating and financing lease right-of-use assets and related liabilities, and share-based compensation. The Company's estimates of valuation of loans held for sale, allowance for credit losses associated with consumer receivables and loans held for investment, and accrued transaction losses are based on historical experience, adjusted for market data relevant to the current economic environment. The Company will continue to update its estimates as developments occur and additional information is obtained.
Concentration of Credit Risk	Concentration of Credit Risk For the three and six months ended June 30, 2024 and June 30, 2023, the Company had no customer that accounted for greater than 10% of total net revenue. The Company had two third-party payment processors that represented approximately 40% and 38% of settlements receivable as of June 30, 2024. As of December 31, 2023, the Company had two parties that represented approximately 46% and 35% of settlements receivable. In both periods, all other third-party payment processors were insignificant. Certain of the Company's products are reliant on third-party service providers such as partner banks, card issuers, and payment service providers. The Company's relationships with third-party service providers may result in operational concentration risks for some of these products. Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash, marketable debt securities, settlements receivable, customer funds, consumer receivables, loans held for sale, and loans held for investment. To mitigate the risk of concentration associated with cash and cash equivalents, as well as restricted cash, funds are held with creditworthy institutions and, at certain times, temporarily swept into insured programs overnight to reduce single firm concentration risk. Amounts on deposit may exceed federal deposit insurance limits. The associated risk of concentration for marketable debt securities is mitigated by holding a diversified portfolio of highly rated investments. Settlements receivable are amounts due from well-established payment processing companies and normally take one or two business days to settle, which mitigates the associated risk of concentration. The associated risk of concentration for loans and consumer receivables is partially mitigated by credit evaluations that are performed prior to facilitating the offering of loans and receivables and ongoing performance monitoring of the Company’s loan customers.
Sales and Marketing Expenses	Sales and Marketing Expenses Advertising costs are expensed as incurred and included in sales and marketing expenses on the condensed consolidated statements of operations. Total advertising costs were $78.3 million and $139.9 million for the three and six months ended June 30, 2024, respectively, compared to $116.1 million and $205.2 million for the three and six months ended June 30, 2023, respectively. The Company also records services, incentives, and other costs to acquire customers that are not directly related to a revenue generating transaction as sales and marketing expenses, as the Company considers these to be marketing costs to encourage the usage of Cash App. These expenses include, but are not limited to, Cash App peer-to-peer processing costs and related transaction losses, card issuance costs, customer referral bonuses, and promotional giveaways. These costs are expensed as incurred.
Fair Value of Financial Instruments	The Company measures its cash equivalents, customer funds, short-term and long-term marketable debt securities, marketable equity investments, and bitcoin investment at fair value. The Company classifies these investments within Level 1 or Level 2 of the fair value hierarchy because the Company values these investments using quoted market prices or alternative pricing sources and models utilizing market observable inputs. The Company measures its safeguarding obligation liability related to bitcoin held for other parties at the fair value of the bitcoin that the Company holds for other parties and classifies the liability within Level 2 because the Company uses observable market prices of the underlying bitcoin as an input for the valuation. The Company also classifies its safeguarding asset related to bitcoin held for other parties within Level 2, unless the asset's carrying amount is adjusted to reflect any actual or potential safeguarding loss events, in which case it would be classified within Level 3.

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The accompanying interim condensed consolidated financial statements of the Company are unaudited. These interim condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") and the applicable rules and regulations of the Securities and Exchange Commission ("SEC") for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The December 31, 2023 condensed consolidated balance sheet was derived from the audited financial statements as of that date, but does not include all of the information and footnotes required by U.S. GAAP for complete financial statements.

The accompanying unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and, in the opinion of management, reflect all adjustments of a normal recurring nature considered necessary to state fairly the Company's consolidated financial position, results of operations, comprehensive income (loss), and cash flows for the interim periods. The condensed consolidated financial statements include the financial statements of Block and its wholly-owned and majority-owned subsidiaries, including variable interest entities for which the Company is deemed to be the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation. Minority interests are recorded as a noncontrolling interest, which is reported as a component of stockholders' equity on the condensed consolidated balance sheets. The interim results for the three and six months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024, or for any other future annual or interim period.

The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Consolidated Financial Statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2023.

Recent Accounting Pronouncements

Adoption of ASU 2023-08 and Recasting of Prior Period

The Company early adopted ASU No. 2023-08, Accounting for and Disclosure of Crypto Assets ("ASU 2023-08"), in the fourth quarter of 2023 using a modified retrospective approach. ASU 2023-08 provides guidance on accounting and disclosure of crypto assets and requires an entity to (i) subsequently remeasure crypto assets at fair value at each measurement date with changes recognized in net income, (ii) present the changes in fair value separately from changes in the carrying amount of other intangible assets in the income statement, and (iii) present crypto assets measured at fair value separately from other intangible assets on the balance sheet. Prior to the adoption of ASU 2023-08, the Company's bitcoin investment was subject to impairment losses if the fair value decreased below the carrying value during the assessed period. Impairment losses on the Company's bitcoin investment could not be recovered for any subsequent increases in fair value until the asset was sold. Upon adoption of ASU 2023-08, the Company recognized a cumulative-effect adjustment increasing bitcoin value and retained earnings by $30.5 million as of the beginning of fiscal year 2023.

The adoption of ASU 2023-08 using a modified retrospective approach requires the Company to adopt the standard as of January 1, 2023.

Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements Not Yet Adopted

In November 2023, the Financial Accounting Standards Board ("FASB") issued ASU No. 2023-07, Improvements to Reportable Segment Disclosures (“ASU 2023-07”). The amendments expand segment disclosures by requiring disclosure of significant segment expenses that are regularly provided to the Company's chief operating decision maker ("CODM"), the amount and description of other segment items, permits companies to disclose more than one measure of segment profit or loss, and requires all annual segment disclosures to be included in the interim periods. The amendments do not change how an entity identifies its operating segments, aggregates those operating segments, or applies quantitative thresholds to determine its reportable segments. The amendments are effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of ASU 2023-07 will impact the Company’s disclosures only, and the Company is evaluating the effect of adopting the new disclosure requirements.

In December 2023, the FASB issued ASU No. 2023-09, Improvements to Income Tax Disclosures (“ASU 2023-09”). The amendments expand income tax disclosure requirements by requiring an entity to disclose (i) specific categories in the rate reconciliation, (ii) additional information for reconciling items that meet a quantitative threshold, and (iii) the amount of taxes paid disaggregated by jurisdiction. The amendments are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of ASU 2023-09 will impact the Company’s disclosures only and the Company is evaluating the effect of adopting the new disclosure requirements.

In March 2024, the SEC adopted rules that require registrants to provide climate-related information in their registration statements and annual reports, such as disclosure of material climate-related risks, Board of Directors’ oversight and risk management activities, material greenhouse gas emissions, and material climate-related targets and goals. The rules will also require registrants to quantify certain effects of severe weather events and other natural conditions in their audited financial statements. As adopted, the new rules will be effective for fiscal years beginning in 2025, except for the greenhouse gas emissions disclosures, which will be effective for fiscal years beginning in 2026. On April 4, 2024, the SEC voluntarily stayed the implementation of the rules pending the judicial review of challenges to the rules in the Eighth Circuit Court of Appeals. The Company is currently evaluating the effect of adopting these new rules.

Use of Estimates

The preparation of the Company’s condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, and expenses, as well as related disclosure of contingent assets and liabilities. Actual results could differ from the Company’s estimates. To the extent that there are material differences between these estimates and actual results, the Company’s financial condition or operating results will be materially affected. The Company bases its estimates on current and past experience, to the extent that historical experience is predictive of future performance and other assumptions that the Company believes are reasonable under the circumstances. The Company evaluates these estimates on an ongoing basis.

Estimates, judgments, and assumptions in these condensed consolidated financial statements include, but are not limited to, those related to accrued transaction losses, contingencies, including outcomes from claims and disputes, valuation of loans held for sale, valuation of goodwill and acquired intangible assets, determination of goodwill impairment charges, determination of allowance for loan loss reserves for loans held for investment, determination of allowance for credit losses for consumer receivables, allocation of acquired goodwill to reporting units, income and other taxes, operating and financing lease right-of-use assets and related liabilities, and share-based compensation.

The Company's estimates of valuation of loans held for sale, allowance for credit losses associated with consumer receivables and loans held for investment, and accrued transaction losses are based on historical experience, adjusted for market data relevant to the current economic environment. The Company will continue to update its estimates as developments occur and additional information is obtained.

Concentration of Credit Risk

For the three and six months ended June 30, 2024 and June 30, 2023, the Company had no customer that accounted for greater than 10% of total net revenue.

The Company had two third-party payment processors that represented approximately 40% and 38% of settlements receivable as of June 30, 2024. As of December 31, 2023, the Company had two parties that represented approximately 46% and 35% of settlements receivable. In both periods, all other third-party payment processors were insignificant. Certain of the Company's products are reliant on third-party service providers such as partner banks, card issuers, and payment service providers. The Company's relationships with third-party service providers may result in operational concentration risks for some of these products.

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash, marketable debt securities, settlements receivable, customer funds, consumer receivables, loans held for sale, and loans held for investment. To mitigate the risk of concentration associated with cash and cash equivalents, as well as restricted cash, funds are held with creditworthy institutions and, at certain times, temporarily swept into insured programs overnight to reduce single firm concentration risk. Amounts on deposit may exceed federal deposit insurance limits. The associated risk of concentration for marketable debt securities is mitigated by holding a diversified portfolio of highly rated investments. Settlements receivable are amounts due from well-established payment processing companies and normally take one or two business days to settle, which mitigates the associated risk of concentration. The associated risk of concentration for loans and consumer receivables is partially mitigated by credit evaluations that are performed prior to facilitating the offering of loans and receivables and ongoing performance monitoring of the Company’s loan customers.

Sales and Marketing Expenses

Advertising costs are expensed as incurred and included in sales and marketing expenses on the condensed consolidated statements of operations. Total advertising costs were $78.3 million and $139.9 million for the three and six months ended June 30, 2024, respectively, compared to $116.1 million and $205.2 million for the three and six months ended June 30, 2023, respectively. The Company also records services, incentives, and other costs to acquire customers that are not directly related to a revenue generating transaction as sales and marketing expenses, as the Company considers these to be marketing costs to encourage the usage of Cash App. These expenses include, but are not limited to, Cash App peer-to-peer processing costs and related transaction losses, card issuance costs, customer referral bonuses, and promotional giveaways. These costs are expensed as incurred.

Fair Value of Financial Instruments

The Company measures its cash equivalents, customer funds, short-term and long-term marketable debt securities, marketable equity investments, and bitcoin investment at fair value. The Company classifies these investments within Level 1 or Level 2 of the fair value hierarchy because the Company values these investments using quoted market prices or alternative pricing sources and models utilizing market observable inputs. The Company measures its safeguarding obligation liability related to bitcoin held for other parties at the fair value of the bitcoin that the Company holds for other parties and classifies the liability within Level 2 because the Company uses observable market prices of the underlying bitcoin as an input for the valuation. The Company also classifies its safeguarding asset related to bitcoin held for other parties within Level 2, unless the asset's carrying amount is adjusted to reflect any actual or potential safeguarding loss events, in which case it would be classified within Level 3.