Paint With A Broad Brush Meaning

(idiomatic) To describe a class of objects or a kind of phenomenon in general terms, without specific details and without attention to individual variations.

Example: 1958, H. Boyle and J. House, "Folklore in the News: Businessmen's Bebop," Western Folklore, vol. 17, no. 1, p. 63:
  I'm just painting with a broad brush. You fellows fill in the details.
1981, D. N., "Review of Global Signposts to the 21st Century by John A. Loraine," Population and Development Review, vol. 7, no. 2, p. 363:
  To cover this range of issues is clearly to paint with a broad brush on a global canvas.
1998 Oct. 5, Ron Stodghill, "Daring To Go There," Time:
  Painting slavery with a broad brush in literature, film and even political debate has kept us from knowing the real horror and heroism of the institution.