Summary of Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information. Our consolidated financial statements include the accounts of Snap Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Our fiscal year ends on December 31. These unaudited interim consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2018, as filed with the SEC on February 6, 2019 (the “Annual Report”). In our opinion, the unaudited interim consolidated financial statements include all adjustments of a normal recurring nature necessary for the fair presentation of our financial position, results of operations, and cash flows. The results of operations for the three and six months ended June 30, 2019 are not necessarily indicative of the results to be expected for the year ending December 31, 2019. Other than described below, there have been no changes to our significant accounting policies described in our Annual Report that have had a material impact on our consolidated financial statements and related notes.
Use of Estimates	Use of Estimates The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ from those estimates. Key estimates relate primarily to determining the fair value of assets and liabilities assumed in business combinations, evaluation of contingencies, uncertain tax positions, excess inventory reserves, lease exit charges, forfeiture rate, and the fair value of stock-based awards. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-15, Intangibles — Goodwill and Other — Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. ASU 2018-15 aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal-use software license. The guidance is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted. We do not expect this new standard will have a material impact on our consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 replaced the incurred loss impairment methodology under current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. ASU 2016-13 requires use of a forward-looking expected credit loss model for accounts receivables, loans, and other financial instruments. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, with early adoption permitted. Adoption of the standard requires using a modified retrospective approach through a cumulative-effect adjustment to retained earnings as of the effective date to align existing credit loss methodology with the new standard. We will adopt ASU 2016-13 effective January 1, 2020. We are currently evaluating the impact of this standard on our consolidated financial statements, including accounting policies, processes, and systems, but do not expect the standard will have a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). ASU 2016-02 requires lessees to recognize lease assets and lease liabilities on the balance sheet and requires expanded disclosures about leasing arrangements. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 and interim periods in fiscal years beginning after December 15, 2018, with early adoption permitted. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements. ASU 2018-11 provides entities another option for transition, allowing entities to not apply the new standard in the comparative periods they present in their financial statements in the year of adoption. Effective January 1, 2019, we adopted ASU 2016-02 using the modified retrospective approach provided by ASU 2018-11. We elected certain practical expedients permitted under the transition guidance, including the election to carryforward historical lease classification. We also elected the short-term lease practical expedient, which allowed us to not recognize leases with a term of less than twelve months on our consolidated balance sheets. In addition, we elected the lease and non-lease components practical expedient, which allowed us to calculate the present value of the fixed payments without performing an allocation of lease and non-lease components. Adoption of the new standard resulted in recording operating lease right-of-use assets and operating lease liabilities of approximately $284.5 million and $375.4 million, respectively, on our consolidated balance sheets as of March 31, 2019. The impact of the adoption was recorded as an adjustment to accumulated deficit as of January 1, 2019 and was not material. The standard did not have a material impact on our consolidated statements of operations or cash flows.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2019

The accompanying unaudited consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information. Our consolidated financial statements include the accounts of Snap Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Our fiscal year ends on December 31. These unaudited interim consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2018, as filed with the SEC on February 6, 2019 (the “Annual Report”).

In our opinion, the unaudited interim consolidated financial statements include all adjustments of a normal recurring nature necessary for the fair presentation of our financial position, results of operations, and cash flows. The results of operations for the three and six months ended June 30, 2019 are not necessarily indicative of the results to be expected for the year ending December 31, 2019.

Other than described below, there have been no changes to our significant accounting policies described in our Annual Report that have had a material impact on our consolidated financial statements and related notes.

Use of Estimates

The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ from those estimates.

Key estimates relate primarily to determining the fair value of assets and liabilities assumed in business combinations, evaluation of contingencies, uncertain tax positions, excess inventory reserves, lease exit charges, forfeiture rate, and the fair value of stock-based awards. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.

Recent Accounting Pronouncements

In August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-15, Intangibles — Goodwill and Other — Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. ASU 2018-15 aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal-use software license. The guidance is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted. We do not expect this new standard will have a material impact on our consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 replaced the incurred loss impairment methodology under current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. ASU 2016-13 requires use of a forward-looking expected credit loss model for accounts receivables, loans, and other financial instruments. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, with early adoption permitted. Adoption of the standard requires using a modified retrospective approach through a cumulative-effect adjustment to retained earnings as of the effective date to align existing credit loss methodology with the new standard. We will adopt ASU 2016-13 effective January 1, 2020. We are currently evaluating the impact of this standard on our consolidated financial statements, including accounting policies, processes, and systems, but do not expect the standard will have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). ASU 2016-02 requires lessees to recognize lease assets and lease liabilities on the balance sheet and requires expanded disclosures about leasing arrangements. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 and interim periods in fiscal years beginning after December 15, 2018, with early adoption permitted. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements. ASU 2018-11 provides entities another option for transition, allowing entities to not apply the new standard in the comparative periods they present in their financial statements in the year of adoption. Effective January 1, 2019, we adopted ASU 2016-02 using the modified retrospective approach provided by ASU 2018-11. We elected certain practical expedients permitted under the transition guidance, including the election to carryforward historical lease classification. We also elected the short-term lease practical expedient, which allowed us to not recognize leases with a term of less than twelve months on our consolidated balance sheets. In addition, we elected the lease and non-lease components practical expedient, which allowed us to calculate the present value of the fixed payments without performing an allocation of lease and non-lease components. Adoption of the new standard resulted in recording operating lease right-of-use assets and operating lease liabilities of approximately $284.5 million and $375.4 million, respectively, on our consolidated balance sheets as of March 31, 2019. The impact of the adoption was recorded as an adjustment to accumulated deficit as of January 1, 2019 and was not material. The standard did not have a material impact on our consolidated statements of operations or cash flows.