WASHINGTON — Top Capitol Hill negotiators reached a hard-won agreement on a huge $1 trillion-plus spending bill that would fund the day-to-day operations of virtually every federal agency through September, aides said Sunday night.

Details of the agreement were expected to be made public Sunday night, said aides to lawmakers involved in weeks of negotiations. The House and Senate had until midnight Friday to pass a measure to avert a government shutdown.

The catchall spending bill would be the first major piece of bipartisan legislation to advance during President Trump’s short tenure in the White House. It denies Trump a win on his oft-promised wall along the U.S.-Mexico border, but gives him a $15 billion down payment on his request to strengthen the military.

It also rejects White House budget director Mick Mulvaney’s proposals to cut popular programs such as funding medical research and community development grants and adds $1.5 billion for border security measures such as additional detention beds.

Most of the core decisions about agency budgets had been worked out, but unrelated policy issues – such as a Democratic request to help the cash-strapped government of Puerto Rico with its Medicaid burden – were among the final holdups.

Democrats have denied Trump a big-picture win on obtaining an initial down payment for his oft-promised border wall with Mexico, while anti-abortion lawmakers didn’t even attempt to use the must-pass measure to try to cut off federal money for Planned Parenthood.

Details were being closely held ahead of an agreement, but Trump and Capitol Hill defense hawks procured a $15 billion infusion of cash for Pentagon readiness and won funding for other border security accounts, such as detention beds for people entering the country illegally.

Democrats praised a $2 billion funding increase for the National Institutes of Health – rejecting the steep cuts proposed by Trump – as well as additional funding to combat opioid abuse, fund Pell Grants for summer school and additional transit funding. A provision extending health care for 22,000 retired Appalachian coal miners and their families was on track to provide permanent health benefits, a priority of Senate Majority leader Mitch McConnell, R-Ky., and other Appalachia region lawmakers.

Democratic votes will be needed to pass the measure, so even though Republicans control both the White House and Congress, Democrats have been actively involved in the talks, which appear headed to produce a measure that won’t look too much different than the deal that could have been struck on President Barack Obama’s watch last year.