W.J. Mander (Oxford University), Idealist Ethics (Oxford Univ. Press, 2016).
"W. J. Mander examines the nature of idealist ethics, that is to say, the
 form and content of ethical belief most typically adopted by 
philosophical idealists. While there exist many studies of the ethical 
views of individual idealist philosophers there has been no literature 
at all on the notion of idealist ethics per se. Never is it 
asked: at which points, if any, do the ethical systems of all these 
thinkers overlap, and what relation, if any, do such commonalities bear 
to their authors' idealism? Never is the question posed: were you 
suddenly to become convinced of the truth of some form of philosophical 
idealism what revisions, if any, would that necessitate in your 
conception of the truth, nature, and significance of ethical judgements?
—Publisher's description 
