A B737-900 First Officer reported encountering wake vortex on arrival to IAH behind another B737.

Narrative

Descending on the WOLDE Arrival; approximately 10 to 11 miles in trail of another 737 (based on TCAS target estimate); we encountered the wake of the other aircraft. Significant roll of +/-10 degrees and brief light chop was experienced. The upset was enough to cause the flying pilot to implement our flight manual procedure for 'uncommanded roll' where the pilot disconnects the autopilot to manually regain aircraft control. Flight conditions at the time were day VMC with little or no wind and very smooth air. The smooth conditions made the wake encounter appear even more dramatic; prompting some comments from the flight attendants and one passenger after landing in IAH. The wake was clearly not severe enough to endanger the aircraft however; had the flight attendants been working the cabin with unsecured beverage carts this wake would have the potential for flight attendant or passenger injury. After the event; both pilots commented that we were glad we were not following a larger aircraft.