Description of the Business and Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 31, 2013
Accounting Policies [Abstract]
Fiscal Year	Fiscal Year Our fiscal year ends on January 31. References to fiscal 2014 or fiscal year 2014, for example, refer to the fiscal year ending January 31, 2014.
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 (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The condensed consolidated balance sheet data as of January 31, 2013 was derived from audited financial statements, but does not include all disclosures required by GAAP. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Annual Report on Form 10-K for the fiscal year ended January 31, 2013, filed on April 1, 2013. There have been no changes in the significant accounting policies from those that were disclosed in the audited consolidated financial statements for the fiscal year ended January 31, 2013 included in the Annual Report on Form 10-K. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to state fairly the financial position, results of operations, comprehensive loss and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year 2014.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America 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 financial statements and reported amounts of revenues and expenses during the reporting periods covered by the financial statements and accompanying notes. In particular, we make estimates with respect to the fair value of multiple elements in revenue recognition, uncollectible accounts receivable, stock-based compensation expense, useful lives of intangible assets and property and equipment, income taxes and contingencies. Actual results could differ from those estimates.
Segments	Segments We operate our business as one operating segment: the development and marketing of software solutions that enable our customers to gain real-time operational intelligence by harnessing the value of their data. Our chief operating decision maker is our Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance and allocating resources.
Principles of Consolidation	Principles of Consolidation The accompanying unaudited condensed consolidated financial statements include the accounts of Splunk Inc. and its direct and indirect wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated upon consolidation.
Foreign Currency	Foreign Currency The functional currency of our foreign subsidiaries is the respective local currency. Translation adjustments arising from the use of differing exchange rates from period to period are included in Accumulated Other Comprehensive Loss within Stockholders' Equity. Foreign currency transaction gains and losses are included in Other Income (Expense), Net and were not material for the three and six months ended July 31, 2013 and 2012. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenues and expenses are translated at the average exchange rate during the period. Equity transactions are translated using historical exchange rates.

Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02, 03

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph k

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+ Details

- Definition

Disclosure of accounting policy for determining an entity's fiscal year or other fiscal period. This disclosure may include identification of the fiscal period end-date, the length of the fiscal period, any reporting period lag between the entity and its subsidiaries, or equity investees. If a reporting lag exists, the closing date of the entity having a different period end is generally noted, along with an explanation of the necessity for using different closing dates. Any intervening events that materially affect the entity's financial position or results of operations are generally also disclosed.

+ References+ Details

- Definition

Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy.

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