WASHINGTON — Shunning the turmoil of recent budget clashes, Congress is ready to approve a massive $1.1 trillion spending bill for this year, a compromise financing everything from airports to war costs and brimming with victories and setbacks for both parties.

The huge bill furnishes the fine print — 1,582 pages of it — for the bipartisan pact approved in December that set overall federal spending levels for the next couple of years. With that decision behind them and lawmakers eager to use the election year to show they can run a government, there was little suspense about the spending bill’s fate.

Reinforcing that was their desire to avoid the potential alternative — a replay of last fall’s 16-day federal shutdown, which disgusted voters.

“There’s a desire to show people we can do our job,” said Rep. Mike Simpson, R-Idaho.

The Republican-led House was expected to approve the sweeping measure today, with the Democratic-run Senate following suit by the end of the week.

The bill heads off an additional $20 billion in automatic cuts to the Pentagon’s budget — on top of $34 billion imposed last year — and cuts to many domestic programs as well. The reductions were being triggered by a 2011 law that forced the cuts after President Barack Obama and Congress failed to negotiate budget savings.