to the detriment of sb/sth | to sb/sth's detriment
resulting in harm or damage to sb/sth :
He was engrossed in his job to the detriment of his health.
to the detriment of sb/sth | to sb/sth's detriment
resulting in harm or damage to sb/sth :
He was engrossed in his job to the detriment of his health.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005