Related Party Transactions	12 Months Ended
Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Dropbox Charitable Foundation During the year ended December 31, 2016, two of the Company’s controlling shareholders formed the Dropbox Charitable Foundation, a Delaware non-stock corporation (the “Foundation”). The primary purpose of the Foundation is to engage in charitable and educational activities within the meaning of Section 501(c)(3) of the Code. The Foundation is governed by a Board of Directors, a majority of which are independent. Both shareholders made contributions to the Foundation during the year ended December 31, 2016, comprised entirely of shares of Dropbox common stock. The Company has not consolidated the Foundation in the accompanying consolidated financial statements, as the Company does not have control of the entity. During the year ended December 31, 2018, the Company did not make cash contributions to the Foundation. During the year ended December 31, 2017, the Company donated shares of Class B common stock to initially fund the Foundation and recorded $9.4 million of expense to general and administrative expenses based on the Company’s estimate of the then current fair value of the contributed shares. The Company made additional cash contributions to the Foundation of $1.9 million during year ended December 31, 2017. Hewlett Packard Enterprise The Company has engaged in various commercial relationships with Hewlett Packard Enterprise (“HPE”), whose former chief executive officer was appointed to the Dropbox Board of Directors in September 2017. These commercial relationships include infrastructure equipment under capital leases, the purchase of commercial products and other services, and a multi-year subscription agreement for access to the Dropbox platform. The chief executive officer of HPE resigned from her position at HPE effective February 1, 2018. From the beginning of fiscal 2018 through the date of the resignation of the former chief executive officer of HPE, the Company made payments of $5.5 million for infrastructure equipment under capital leases and for commercial products and services provided by HPE. From the date of appointment of HPE’s chief executive officer to the Dropbox Board of Directors through December 31, 2017, the Company made payments of $18.4 million for infrastructure equipment under capital leases and for commercial products and services provided by HPE. As of December 31, 2017, the Company had a remaining obligation of $87.1 million for equipment under capital lease from HPE. Related to the multi-year subscription agreement, the Company recognized an immaterial amount of revenue from the date of appointment of HPE’s former chief executive officer to the Dropbox Board of Directors through December 31, 2017, and had an immaterial balance of deferred revenue and outstanding trade receivables as of December 31, 2017.

Related Party Transactions

Dropbox Charitable Foundation

During the year ended December 31, 2016, two of the Company’s controlling shareholders formed the Dropbox Charitable Foundation, a Delaware non-stock corporation (the “Foundation”). The primary purpose of the Foundation is to engage in charitable and educational activities within the meaning of Section 501(c)(3) of the Code. The Foundation is governed by a Board of Directors, a majority of which are independent. Both shareholders made contributions to the Foundation during the year ended December 31, 2016, comprised entirely of shares of Dropbox common stock. The Company has not consolidated the Foundation in the accompanying consolidated financial statements, as the Company does not have control of the entity.

During the year ended December 31, 2018, the Company did not make cash contributions to the Foundation. During the year ended December 31, 2017, the Company donated shares of Class B common stock to initially fund the Foundation and recorded $9.4 million of expense to general and administrative expenses based on the Company’s estimate of the then current fair value of the contributed shares. The Company made additional cash contributions to the Foundation of $1.9 million during year ended December 31, 2017.

Hewlett Packard Enterprise

The Company has engaged in various commercial relationships with Hewlett Packard Enterprise (“HPE”), whose former chief executive officer was appointed to the Dropbox Board of Directors in September 2017. These commercial relationships include infrastructure equipment under capital leases, the purchase of commercial products and other services, and a multi-year subscription agreement for access to the Dropbox platform. The chief executive officer of HPE resigned from her position at HPE effective February 1, 2018.

From the beginning of fiscal 2018 through the date of the resignation of the former chief executive officer of HPE, the Company made payments of $5.5 million for infrastructure equipment under capital leases and for commercial products and services provided by HPE.

From the date of appointment of HPE’s chief executive officer to the Dropbox Board of Directors through December 31, 2017, the Company made payments of $18.4 million for infrastructure equipment under capital leases and for commercial products and services provided by HPE. As of December 31, 2017, the Company had a remaining obligation of $87.1 million for equipment under capital lease from HPE. Related to the multi-year subscription agreement, the Company recognized an immaterial amount of revenue from the date of appointment of HPE’s former chief executive officer to the Dropbox Board of Directors through December 31, 2017, and had an immaterial balance of deferred revenue and outstanding trade receivables as of December 31, 2017.