Chicago also came away with three more takeaways to increase its total from a league-leading 30 entering the game to 33.
The rather easy win came after back-to-back losses to Houston and San Francisco, but came with a heavy price.
Hester was lost early on to a concussion. Forte hobbled off midway through the third quarter with an ankle injury, and coach Lovie Smith said Tillman hurt his ankle.
As for Cutler, he looked sharp after missing Monday's blowout loss at San Francisco.
Brandon Marshall caught 12 passes for 92 yards and became the first Bears receiver since Marty Booker in 2002 to go over 1,000 yards. On defense, Henry Melton set the tone by sacking Christian Ponder on the first play from scrimmage. Nick Roach set up the first touchdown by knocking the ball out of Peterson's hands. Chris Conte set another TD with a 35-yard interception return, and Julius Peppers blocked a field goal.
The league's leading rusher, Peterson tied Robert Smith's club record with a 100-yard performance for the fifth straight game even though he managed just 25 in the first half. He also lost two fumbles.
Cutler completed 15 of 17 passes for 117 yards in the first half, and the Bears jumped out a big lead after a shaky start on offense.
Copyright 2012 by The Associated Press