Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal matters From time to time, the Company is a party to a variety of claims, lawsuits, and proceedings which arise in the ordinary course of business, including claims of alleged infringement of intellectual property rights. The Company records a liability when it believes that it is probable that a loss will be incurred and the amount of loss or range of loss can be reasonably estimated. In its opinion, resolution of pending matters is not likely to have a material adverse impact on its condensed consolidated results of operations, cash flows, or its financial position. Given the unpredictable nature of legal proceedings, the Company bases its estimate on the information available at the time of the assessment. As additional information becomes available, the Company reassesses the potential liability and may revise the estimate. The Company is currently involved in four putative class action lawsuits alleging violations of the federal securities laws that were filed on August 30, 2019, September 5, 2019, September 13, 2019, and October 3, 2019, in the Superior Court of the State of California, San Mateo County, against the Company, certain of its officers and directors, underwriters of its IPO, and Sequoia Capital XII, L.P. and certain of its affiliated entities (collectively, the "Dropbox Defendants"). On October 4, 2019, two putative class action lawsuits alleging violations of the federal securities laws were filed against the Dropbox Defendants in the U.S. District Court for the Northern District of California (the "Federal Plaintiffs"). The six lawsuits each make the same or similar allegations of violations of federal securities laws, for allegedly making materially false and misleading statements in, or omitting material information from, the Company's IPO registration statement. The plaintiffs seek unspecified monetary damages and other relief. On March 2, 2020, the Federal Plaintiffs filed a consolidated class action complaint. On April 16, 2020, the Dropbox Defendants filed a motion to dismiss the federal consolidated class action complaint. On May 11, 2020, the Dropbox Defendants filed a motion to dismiss the consolidated state court case based on the exclusive federal forum provisions contained in the Company's amended and restated bylaws. On October 21, 2020, the court issued an order granting the Company's motion to dismiss the Federal Plaintiffs’ complaint with leave to amend. The Company believes the cases are without merit and intends to vigorously defend them. The Company does not currently believe that this matter is likely to have a material adverse impact on its consolidated results of operations, cash flows, or financial position. Indemnification The Company’s arrangements generally include certain provisions for indemnifying customers against liabilities if its products or services infringe a third party’s intellectual property rights. It is not possible to determine the maximum potential amount under these indemnification obligations due to the limited history of prior indemnification claims. Other commitments Other commitments include payments to third-party vendors for services related to the Company’s infrastructure, infrastructure warranty contracts, and asset retirement obligations for office modifications. There have been no material changes in the Company's other commitments, as disclosed in the Annual Report.