To impact someone or something negatively; to diminish someone or something. Unfortunately, that outdated kitchen detracts from the overall value of your house.His lies detracted from his otherwise stellar record as a senator.
detract from someone or something
to lessen or diminish someone or something. The large pieces of furniture detracted from the lovely design in the carpet.Alice's quiet demeanor did not detract from her grace and beauty.
detract from
v.
To reduce a quality, importance, or some other value; diminish something: The dent on the side of the car detracts from its overall value. The politician's uneven voting record detracted from his chances of winning the election.