Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	(1) Summary of Significant Accounting Policies (a) Basis of Presentation The accompanying Consolidated Financial Statements of MicroStrategy Incorporated (“MicroStrategy” or the “Company”) are unaudited. In the opinion of management, all adjustments necessary for a fair statement of financial position and results of operations have been included. All such adjustments are of a normal recurring nature, unless otherwise disclosed. Interim results are not necessarily indicative of results for a full year. Certain amounts in the prior year’s Consolidated Statements of Cash Flows have been reclassified to conform to current year presentation. In particular, reductions in the carrying amount of right-of-use (“ROU”) assets have been reclassified from “Depreciation and amortization” to “Reduction in carrying amount of right-of-use assets” in operating activities. As discussed in Note 2, Recent Accounting Standards, to the Consolidated Financial Statements, the Company adopted Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and its subsequent amendments (“ASU 2016-13”), effective January 1, 2020. Comparative prior period Consolidated Financial Statements have not been restated for ASU 2016-13. The Consolidated Financial Statements and Notes to Consolidated Financial Statements are presented as required by the United States Securities and Exchange Commission (“SEC”) and do not contain certain information included in the Company’s annual financial statements and notes. These financial statements should be read in conjunction with the Company’s audited financial statements and the notes thereto filed with the SEC in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. There have been no significant changes in the Company’s accounting policies since December 31, 2019, except as discussed below with respect to the Company’s adoption of ASU 2016-13. The accompanying Consolidated Financial Statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The Company is not aware of any material subsequent event that would require recognition or disclosure. (b) Short-term Investments The Company periodically invests a portion of its excess cash in short-term investment instruments. All highly liquid investments with stated maturity dates between three months and one year from the purchase date are classified as short-term investments. The Company determines the appropriate classification of its short-term investments at the time of purchase and reassesses the appropriateness of the classification at each reporting date. All of the Company’s short-term investments are in U.S. Treasury securities. All short-term investments have been classified as available-for-sale and are reported at fair value within “Short-term investments” on the accompanying Consolidated Balance Sheets. The fair value of the Company’s short-term investments is determined based on quoted market prices in active markets for identical securities (Level 1 inputs). Premiums and discounts related to the Company’s short-term investments are amortized over the life of the investment and recorded in earnings. Each reporting period, the Company determines the amount of unrealized holding gains and losses on each individual security by comparing the fair value to the amortized cost. Unrealized holding gains and unrealized holding losses that are not a result of a credit loss are reported in other comprehensive income (loss) until realized. Beginning January 1, 2020, unrealized holding losses that are a result of a credit loss are recorded in earnings, with the establishment of an allowance for credit losses. (c) Credit Losses on Accounts Receivable The Company maintains an allowance for credit losses on its accounts receivable balances, which represents its best estimate of current expected credit losses over the contractual life of the accounts receivable. Beginning January 1, 2020, when evaluating the adequacy of its allowance for credit losses each reporting period, the Company analyzes accounts receivable balances with similar risk characteristics on a collective basis, considering factors such as the aging of receivable balances, payment terms, geographic location, historical loss experience, current information, and future expectations. Each reporting period, the Company reassesses whether any accounts receivable no longer share similar risk characteristics and should instead be evaluated as part of another pool or on an individual basis. Changes to the allowance for credit losses are adjusted through credit loss expense, which is presented within “General and administrative” operating expenses in the Consolidated Statements of Operations.

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2020

Summary of Significant Accounting Policies

(1) Summary of Significant Accounting Policies

(a) Basis of Presentation

The accompanying Consolidated Financial Statements of MicroStrategy Incorporated (“MicroStrategy” or the “Company”) are unaudited. In the opinion of management, all adjustments necessary for a fair statement of financial position and results of operations have been included. All such adjustments are of a normal recurring nature, unless otherwise disclosed. Interim results are not necessarily indicative of results for a full year.

Certain amounts in the prior year’s Consolidated Statements of Cash Flows have been reclassified to conform to current year presentation. In particular, reductions in the carrying amount of right-of-use (“ROU”) assets have been reclassified from “Depreciation and amortization” to “Reduction in carrying amount of right-of-use assets” in operating activities.

As discussed in Note 2, Recent Accounting Standards, to the Consolidated Financial Statements, the Company adopted Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and its subsequent amendments (“ASU 2016-13”), effective January 1, 2020. Comparative prior period Consolidated Financial Statements have not been restated for ASU 2016-13.

The Consolidated Financial Statements and Notes to Consolidated Financial Statements are presented as required by the United States Securities and Exchange Commission (“SEC”) and do not contain certain information included in the Company’s annual financial statements and notes. These financial statements should be read in conjunction with the Company’s audited financial statements and the notes thereto filed with the SEC in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. There have been no significant changes in the Company’s accounting policies since December 31, 2019, except as discussed below with respect to the Company’s adoption of ASU 2016-13.

The accompanying Consolidated Financial Statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The Company is not aware of any material subsequent event that would require recognition or disclosure.

(b) Short-term Investments

The Company periodically invests a portion of its excess cash in short-term investment instruments. All highly liquid investments with stated maturity dates between three months and one year from the purchase date are classified as short-term investments. The Company determines the appropriate classification of its short-term investments at the time of purchase and reassesses the appropriateness of the classification at each reporting date.

All of the Company’s short-term investments are in U.S. Treasury securities. All short-term investments have been classified as available-for-sale and are reported at fair value within “Short-term investments” on the accompanying Consolidated Balance Sheets. The fair value of the Company’s short-term investments is determined based on quoted market prices in active markets for identical securities (Level 1 inputs). Premiums and discounts related to the Company’s short-term investments are amortized over the life of the investment and recorded in earnings. Each reporting period, the Company determines the amount of unrealized holding gains and losses on each individual security by comparing the fair value to the amortized cost. Unrealized holding gains and unrealized holding losses that are not a result of a credit loss are reported in other comprehensive income (loss) until realized. Beginning January 1, 2020, unrealized holding losses that are a result of a credit loss are recorded in earnings, with the establishment of an allowance for credit losses.

The Company maintains an allowance for credit losses on its accounts receivable balances, which represents its best estimate of current expected credit losses over the contractual life of the accounts receivable. Beginning January 1, 2020, when evaluating the adequacy of its allowance for credit losses each reporting period, the Company analyzes accounts receivable balances with similar risk characteristics on a collective basis, considering factors such as the aging of receivable balances, payment terms, geographic location, historical loss experience, current information, and future expectations. Each reporting period, the Company reassesses whether any accounts receivable no longer share similar risk characteristics and should instead be evaluated as part of another pool or on an individual basis. Changes to the allowance for credit losses are adjusted through credit loss expense, which is presented within “General and administrative” operating expenses in the Consolidated Statements of Operations.