Detachment means something very different in the West. It gives the impression of not being responsible of ones actions or detachment from a moral conscious.
Great many sages, masters, warriors and thinkers have pointed to Detachment as a key component to self actualization. To be detached from the false idea of who we are, a detachment that means complete freedom to observe and function in the Universe objectively.
Once you actualize this realization (and I mean feel it in the core depths of yourself) that you are the cosmos, and it is you, you experience this form of detachment. Because you can’t be attached to something if you are everything.