On the Detroit Lions website it lists their record as 11-6-1 versus Green Bay Packers on Thanksgiving day, but I do not think that includes this years loss.
Through the 2008 season, that was November 27, 2003 when the Lions defeated the Green Bay Packers, 22-14.
From the Detroit Lions website: The Lions have played the Packers the most of any franchise on Thanksgiving with 16 meetings between the two teams. Detroit and Chicago have battled a total of 15 times. The Lions have played 21 different NFL teams on Thanksgiving Day.
The last time the Detroit Lions defeated the Green Bay Packers was on September 21, 2014, in Ford Field, Detroit, Michigan. The Lions defeated the Packers by a score of 19-7. The last time the Lions beat the Packers in Lambeau Field was on December 15, 1991.
The Green Bay Packers did not play on December 1, 2013. They played their week 13 game on Thanksgiving, November 28 and did not win. Green Bay lost to the Detroit Lions 40-10.
The Lions will host the Green Bay Packers for their traditional Thanksgiving game this year.
Super Bowl I Green Bay Packers defeated the Kansas City Chiefs 35-10 Super Bowl II Green Bay Packers defeated the Oakland Raiders 33-14
The Green Bay Packers defeated the pittsburg steelers. This happennned in the 2011 super bowl. The Green Bay Packers were not undefeated that year.