pre_text: We operate in the following two reportable segments, which are the same as our operating segments: • Enterprise Security. Our Enterprise Security segment focuses on providing our Integrated Cyber Defense solutions to help business and government customers unify cloud and on-premises security to deliver a more effective cyber defense solution, while driving down cost and complexity. • Consumer Cyber Safety. Our Consumer Cyber Safety segment focuses on providing cyber safety solutions under our Norton LifeLock brand to help consumers protect their devices, online privacy, identities, and home networks. Operating segments are based upon the nature of our business and how our business is managed. Our Chief Operating Decision Makers, comprised of our Chief Executive Officer and Chief Financial Officer, use our operating segment financial information to evaluate segment performance and to allocate resources. There were no inter-segment sales for the periods presented. The following table summarizes the operating results of our reportable segments: Note 15. Segment and Geographic Information
table: Year Ended
table: (In millions) March 29, 2019 March 30, 2018 March 31, 2017
table: Total segments:
table: Net revenues $4,731 $4,834 $4,019
table: Operating income $1,414 $1,584 $1,026
table: Enterprise Security:
table: Net revenues $2,323 $2,554 $2,355
table: Operating income $269 $473 $187
table: Consumer Cyber Safety:
table: Net revenues $2,408 $2,280 $1,664
table: Operating income $1,145 $1,111 $839
question: Analyse this data from a financial earnings document. What is the average total segments Operating income for the fiscal years 2019, 2018 and 2017?