S. 2943 would authorize appropriations totaling an estimated $603.9 billion for the military functions of the Department of Defense (DoD), for certain activities of the Department of Energy (DOE), and for other purposes. In addition, S. 2943 would prescribe personnel strengths for each active-duty and selected-reserve component of the U.S. armed forces. CBO estimates that appropriation of the authorized amounts would result in outlays of $587.8 billion over the 2017-2021 period.
Of the amount authorized for 2017, $544.1 billion—if appropriated—would count against that year's defense cap set in the Budget Control Act (BCA), as amended. Another $0.2 billion authorized for nondefense programs would count against the nondefense cap and an additional $58.9 billion authorized and designated for overseas contingency operations would not be constrained by caps.
Read here: https://www.cbo.gov/sites/default/files/114th-congress-2015-2016/costestimate/s2943.pdf
