pre_text: Segment operating results Enterprise Security segment Revenue increased $199 million primarily due to increases of $331 million in revenue from sales of our network and web security solutions and $36 million from sales of endpoint and information protection solutions, partially offset by a $184 million decrease in revenue as a result of the divestiture of our WSS and PKI solutions. Revenue during fiscal 2018 was also unfavorably affected by a shift in the mix of sales towards subscription and cloud-delivered solutions subject to ratable revenue recognition, which resulted in less in-period recognized revenue and more revenue deferred to the balance sheet as compared to fiscal 2017. Operating income increased $286 million primarily due to higher revenue discussed above, a $51 million decrease in sales and marketing expenses and a $38 million decrease in cost of revenues.
table: Fiscal Year Variance in
table: (In millions, except for percentages) 2018 2017 Dollars Percent
table: Net revenues $2,554 $2,355 $199 8%
table: Percentage of total net revenues 53% 59%
table: Operating income $473 $187 $286 153%
table: Operating margin 19% 8%
question: Analyse this data from a financial earnings document. What is the total net revenue for fiscal 2017 and fiscal 2018?