President Donald Trump's first budget proposal will include a $54 billion increase in the defense budget, a White House budget official said on Monday.

Trump will seek to cut the same amount from non-defense spending, including a large reduction in foreign aid.

"We're going to do more with less and make the government lean and accountable," Trump said in a meeting with governors on Sunday in which he said he planned to propose a substantial increase in public safety spending.

Those spending cuts could also include Republican targets like the Environmental Protection Agency, according to The Associated Press. In an interview with Fox News' "Sunday Morning Futures," Treasury Secretary Steven Mnuchin said cuts to Social Security and Medicare would not be included in the budget proposal.

Trump will let the Department of Defense decide how to spend the extra billions and most federal agencies will see reductions in funding, an official from the Office of Management and Budget told reporters. The official said Trump's first budget will not address taxes or mandatory spending.

Trump said he would talk about his plans for infrastructure spending in the speech to Congress on Tuesday. "We're going to start spending on infrastructure big," he said.