With the budget resolution voted in by congress that runs until the September of this year (end of the fiscal year), I gather the defense budget is the Obama proposed 2017 defense budget plus $15 billion (which is half of the additional budget that Trump requested for 2017)….so total budget of around $583 (2017 request) or $596 (actually spent) + $15 billion: https://www.yahoo.com/finance/news/lawmakers-common-ground-1t-plan-201456675.html
Also see: https://en.wikipedia.org/wiki/Military_budget_of_the_United_States
The big increase will have to wait for the FY 2018 budget, proposed to be $639 billion (I gather, although the figure $603 was put out when Trump first announced his 10% increase). Of course, they did not fully sort out the FY2017 budget until five months before fiscal year 2017 ended, so I am not giving much of chance that they will get the FY 2018 budget sorted out before the start of the next fiscal year (this coming October), as I gather there a few controversial expenditures and cuts in the next government budget. So defense spending will remain fairly level for some months to come.
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P.S.: The 15 billion increase is an additional 12.5 billion for this fiscal year (ends Sept. 30) and “…an additional $2.5 billion contingent on Trump delivering a plan to Congress for defeating the Islamic State militant group.” This last part seems a little odd: http://www.csmonitor.com/USA/Politics/2017/0501/To-avoid-government-shutdown-negotiators-reach-deal-on-1-trillion-budget