Summary of Business and Significant Accounting Policies (Policies)	3 Months Ended
Apr. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Fiscal Year	Fiscal Year Our fiscal year ends on January 31. References to fiscal 2020, for example, refer to the fiscal year ending January 31, 2020.
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) and applicable regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting, and include the accounts of Zoom Video Communications, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The unaudited condensed consolidated balance sheet as of January 31, 2019 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including certain notes required by GAAP on an annual reporting basis. The unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the balance sheets, statements of operations, statements of comprehensive income (loss), statements of convertible preferred stock and stockholders’ equity (deficit), and statements of cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year or any future period.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include, but are not limited to, the estimated expected benefit period for deferred contract acquisition costs, the accounts receivable allowances, the useful lives of long-lived assets, the incremental borrowing rate for operating leases, the valuation of derivative liabilities, the value of common stock and other assumptions used to measure stock-based compensation expense, sales and other tax liabilities, the valuation of deferred income tax assets and uncertain tax positions. Actual results could differ from those estimates.
Leases	Leases All significant lease arrangements are generally recognized at lease commencement. Operating lease right-of-use (ROU) assets and operating lease liabilities are recognized at commencement. For short term leases (an initial term of 12 months or less), a ROU asset and corresponding lease liability are not recorded and we record rent expense in our condensed consolidated statements of operations on a straight-line basis over the lease term and record variable lease payments as incurred. ROU assets represent our right to use an underlying asset during the reasonably certain lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of fixed payments not yet paid over the lease term. We use our incremental borrowing rate based on the information available at the commencement date in determining the lease liabilities as our leases generally do not provide an implicit rate. ROU assets also include any initial direct costs incurred and any lease payments made at or before the lease commencement date, less lease incentives received. We currently do not have any finance leases.
Recently Adopted and Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02 (Topic 842), Leases (ASU 2016-02), which supersedes FASB ASC Topic 840, Leases (ASC 840), and makes other conforming amendments to GAAP. ASU 2016-02 requires, among other changes to the lease accounting guidance, lessees to recognize most leases on-balance sheet via a right-of-use asset and lease liability, and additional qualitative and quantitative disclosures. ASU 2016-02 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein. We adopted the standard as of February 1, 2019 using the modified retrospective method of applying the new standard at the adoption date. Under this approach, we will continue to report comparative periods presented in the period of adoption under ASC 840. We have elected the package of practical expedients permitted under the transition guidance within the new standard, which allows us to (1) carry forward the historical lease classification, (2) not reassess whether any expired or existing contracts contain leases, and (3) not reassess indirect costs for any existing leases. This election allows us to account for lease components (e.g., fixed payments or variable payments that depend on a rate that can be determined at commencement, including rent for the right to use the asset) together with nonlease components (e.g., other fixed payments that deliver a good or service including common-area maintenance costs) in the calculation of the right-of-use asset and corresponding liability. Adoption of this standard resulted in the recording of ROU assets and total liabilities of $40.5 million and $43.0 million, respectively, with no material impact on retained earnings as of February 1, 2019. See Note 7 for further details. In June 2018, the FASB issued ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting (ASU 2018-07). The standard simplifies the accounting for share-based payments granted to nonemployees for goods and services and aligns most of the guidance on such payments to nonemployees with the requirements for share-based payments granted to employees. ASU 2018-07 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein, using a modified retrospective approach. We adopted ASU 2018-07 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13 (Topic 820), Fair Value Measurement: Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13). The standard no longer requires disclosure of the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, however public companies will be required to disclose the range and weighted-average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU 2018-13 is effective for the annual periods in fiscal years beginning after December 15, 2019, and interim periods therein, with early adoption permitted. We adopted ASU 2018-13 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements.

Summary of Business and Significant Accounting Policies (Policies)

3 Months Ended

Apr. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Our fiscal year ends on January 31. References to fiscal 2020, for example, refer to the fiscal year ending January 31, 2020.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) and applicable regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting, and include the accounts of Zoom Video Communications, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

The unaudited condensed consolidated balance sheet as of January 31, 2019 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including certain notes required by GAAP on an annual reporting basis. The unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the balance sheets, statements of operations, statements of comprehensive income (loss), statements of convertible preferred stock and stockholders’ equity (deficit), and statements of cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year or any future period.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include, but are not limited to, the estimated expected benefit period for deferred contract acquisition costs, the accounts receivable allowances, the useful lives of long-lived assets, the incremental borrowing rate for operating leases, the valuation of derivative liabilities, the value of common stock and other assumptions used to measure stock-based compensation expense, sales and other tax liabilities, the valuation of deferred income tax assets and uncertain tax positions. Actual results could differ from those estimates.

Leases

All significant lease arrangements are generally recognized at lease commencement. Operating lease right-of-use (ROU) assets and operating lease liabilities are recognized at commencement. For short term leases (an initial term of 12 months or less), a ROU asset and corresponding lease liability are not recorded and we record rent expense in our condensed consolidated statements of operations on a straight-line basis over the lease term and record variable lease payments as incurred. ROU assets represent our right to use an underlying asset during the reasonably certain lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of fixed payments not yet paid over the lease term. We use our incremental borrowing rate based on the information available at the commencement date in determining the lease liabilities as our leases generally do not provide an implicit rate. ROU assets also include any initial direct costs incurred and any lease payments made at or before the lease commencement date, less lease incentives received. We currently do not have any finance leases.

Recently Adopted and Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02 (Topic 842), Leases (ASU 2016-02), which supersedes FASB ASC Topic 840, Leases (ASC 840), and makes other conforming amendments to GAAP. ASU 2016-02 requires, among other changes to the lease accounting guidance, lessees to recognize most leases on-balance sheet via a right-of-use asset and lease liability, and additional qualitative and quantitative disclosures. ASU 2016-02 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein. We adopted the standard as of February 1, 2019 using the modified retrospective method of applying the new standard at the adoption date. Under this approach, we will continue to report comparative periods presented in the period of adoption under ASC 840. We have elected the package of practical expedients permitted under the transition guidance within the new standard, which allows us to (1) carry forward the historical lease classification, (2) not reassess whether any expired or existing contracts contain leases, and (3) not reassess indirect costs for any existing leases. This election allows us to account for lease components (e.g., fixed payments or variable payments that depend on a rate that can be determined at commencement, including rent for the right to use the asset) together with nonlease components (e.g., other fixed payments that deliver a good or service including common-area maintenance costs) in the calculation of the right-of-use asset and corresponding liability. Adoption of this standard resulted in the recording of ROU assets and total liabilities of $40.5 million and $43.0 million, respectively, with no material impact on retained earnings as of February 1, 2019. See Note 7 for further details.

In June 2018, the FASB issued ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting (ASU 2018-07). The standard simplifies the accounting for share-based payments granted to nonemployees for goods and services and aligns most of the guidance on such payments to nonemployees with the requirements for share-based payments granted to employees. ASU 2018-07 is effective for the annual periods in fiscal years beginning after December 15, 2018, and interim periods therein, using a modified retrospective approach. We adopted ASU 2018-07 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements.

In August 2018, the FASB issued ASU No. 2018-13 (Topic 820), Fair Value Measurement: Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13). The standard no longer requires disclosure of the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, however public companies will be required to disclose the range and weighted-average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU 2018-13 is effective for the annual periods in fiscal years beginning after December 15, 2019, and interim periods therein, with early adoption permitted. We adopted ASU 2018-13 as of February 1, 2019, and our adoption did not have a material impact on the condensed consolidated financial statements.