Commitments and Contingencies	6 Months Ended
Jul. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Operating Leases During the six months ended July 31, 2017, we extended the lease term of an existing office facility with total additional lease obligations of approximately $2.0 million with the lease expiring through March 2019. Letters of Credit As of January 31, 2017 and July 31, 2017, we had outstanding letters of credit in the aggregate amount of $7.7 million, in connection with our facility leases. The letters of credit are collateralized by restricted cash in the same amount and mature at various dates through June 2024. Legal Matters On September 1, 2016, a purported securities class action entitled Ramsay v. Pure Storage, Inc., et al. was filed in the Superior Court of the State of California (San Mateo County) against us and certain of our officers, directors, investors and underwriters for our initial public offering (IPO), asserting claims under sections 11, 12 and 15 of the Securities Act on behalf of a purported class consisting of purchasers of our common stock pursuant or traceable to our initial public offering, and seeking unspecified compensatory damages and other relief. Substantially identical lawsuits were subsequently filed in the same court, bringing the same claims against the same defendants, captioned Peter Galanis v. Pure Storage, Inc., et al. (filed September 14, 2016), Curtis Wilson v. Pure Storage, Inc., et al. (filed September 15, 2016), Loren Moe v. Pure Storage, Inc., et al. (filed September 23, 2016), and Mason Delahooke and Mahsa Shirazikia v. Pure Storage, Inc., et al. (filed October 5, 2016). On October 27, 2016, the aforementioned actions were consolidated under the caption In re Pure Storage, Inc. Shareholder Litigation. On December 13, 2016, the plaintiffs filed a consolidated complaint. On January 26, 2017, the defendants filed a demurrer (motion to dismiss) to the consolidated complaint on the grounds that the plaintiffs failed to state a claim under the Securities Act. On April 4, 2017, the court sustained the demurrer as to all claims with leave to amend. On May 15, 2017, the plaintiffs filed an amended complaint, again asserting claims under sections 11, 12 and 15 of the Securities Act against us and certain of our officers, directors and underwriters for our IPO. On May 26, 2017 the defendants filed a demurrer (motion to dismiss) to the amended complaint on the grounds that the plaintiffs failed to state a claim under the Securities Act. The Court heard arguments on the second demurrer on July 18, 2017 and on August 31, 2017 the Court sustained defendant's demurrer again as to all claims with leave to amend. We believe there is no merit to the allegations and intend to defend ourselves vigorously. From time to time, we have become involved in claims and other legal matters arising in the normal course of business. We investigate these claims as they arise. Although claims are inherently unpredictable, we currently are not aware of any matters that may have a material adverse effect on our business, financial position, results of operations or cash flows. Accordingly, we have not recorded any loss contingency on our consolidated balance sheet as of July 31, 2017. Indemnification Our arrangements generally include certain provisions for indemnifying customers against liabilities if our products or services infringe a third party’s intellectual property rights. Other guarantees or indemnification arrangements include guarantees of product and service performance and standby letters of credit for lease facilities. It is not possible to determine the maximum potential amount under these indemnification obligations due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. To date, we have not incurred any material costs as a result of such obligations and have not accrued any liabilities related to such obligations in the consolidated financial statements. In addition, we indemnify our officers, directors and certain key employees while they are serving in good faith in their respective capacities. To date, there have been no claims under any indemnification provisions.

Commitments and Contingencies

Operating Leases

During the six months ended July 31, 2017, we extended the lease term of an existing office facility with total additional lease obligations of approximately $2.0 million with the lease expiring through March 2019.

Letters of Credit

As of January 31, 2017 and July 31, 2017, we had outstanding letters of credit in the aggregate amount of $7.7 million, in connection with our facility leases. The letters of credit are collateralized by restricted cash in the same amount and mature at various dates through June 2024.

Legal Matters

On September 1, 2016, a purported securities class action entitled Ramsay v. Pure Storage, Inc., et al. was filed in the Superior Court of the State of California (San Mateo County) against us and certain of our officers, directors, investors and underwriters for our initial public offering (IPO), asserting claims under sections 11, 12 and 15 of the Securities Act on behalf of a purported class consisting of purchasers of our common stock pursuant or traceable to our initial public offering, and seeking unspecified compensatory damages and other relief. Substantially identical lawsuits were subsequently filed in the same court, bringing the same claims against the same defendants, captioned Peter Galanis v. Pure Storage, Inc., et al. (filed September 14, 2016), Curtis Wilson v. Pure Storage, Inc., et al. (filed September 15, 2016), Loren Moe v. Pure Storage, Inc., et al. (filed September 23, 2016), and Mason Delahooke and Mahsa Shirazikia v. Pure Storage, Inc., et al. (filed October 5, 2016). On October 27, 2016, the aforementioned actions were consolidated under the caption In re Pure Storage, Inc. Shareholder Litigation. On December 13, 2016, the plaintiffs filed a consolidated complaint. On January 26, 2017, the defendants filed a demurrer (motion to dismiss) to the consolidated complaint on the grounds that the plaintiffs failed to state a claim under the Securities Act. On April 4, 2017, the court sustained the demurrer as to all claims with leave to amend. On May 15, 2017, the plaintiffs filed an amended complaint, again asserting claims under sections 11, 12 and 15 of the Securities Act against us and certain of our officers, directors and underwriters for our IPO. On May 26, 2017 the defendants filed a demurrer (motion to dismiss) to the amended complaint on the grounds that the plaintiffs failed to state a claim under the Securities Act. The Court heard arguments on the second demurrer on July 18, 2017 and on August 31, 2017 the Court sustained defendant's demurrer again as to all claims with leave to amend. We believe there is no merit to the allegations and intend to defend ourselves vigorously.

From time to time, we have become involved in claims and other legal matters arising in the normal course of business. We investigate these claims as they arise. Although claims are inherently unpredictable, we currently are not aware of any matters that may have a material adverse effect on our business, financial position, results of operations or cash flows. Accordingly, we have not recorded any loss contingency on our consolidated balance sheet as of July 31, 2017.

Indemnification

Our arrangements generally include certain provisions for indemnifying customers against liabilities if our products or services infringe a third party’s intellectual property rights. Other guarantees or indemnification arrangements include guarantees of product and service performance and standby letters of credit for lease facilities. It is not possible to determine the maximum potential amount under these indemnification obligations due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. To date, we have not incurred any material costs as a result of such obligations and have not accrued any liabilities related to such obligations in the consolidated financial statements. In addition, we indemnify our officers, directors and certain key employees while they are serving in good faith in their respective capacities. To date, there have been no claims under any indemnification provisions.