broad strokes

• wide brush strokes

An allusion to a manner of painting.

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broad strokes pl (plural only)

1. (idiomatic) Major features or key points; outline.
   • 1989 July 7, Serge Schmemann, “Vienna Talks: Complex Array of Arms Issues Plus an East of Many Voices”, in New York Times, retrieved 18 October 2011:

     The President made his proposals in broad strokes, and the details remain to be worked out.

   • 2002, Howard Blum, Gangland: How the FBI Broke the Mob‎, →ISBN, page 12:

     His plan, in broad strokes, was to outfit a small fleet of cars with a number of miniature directional microphones.

   • 2009 March 13, Jay Newton-Small, “Bipartisan Senate Group Makes Health-Care Progress”, in Time:

     A bipartisan group of nine U.S. Senators, after meeting for nine months behind closed doors, is nearing an agreement on the broad strokes of a health-care-reform bill.

2. (idiomatic, especially of a narrative or artistic work) Developments, movements, or descriptions presented in a bold or sweeping manner, without intricacy, adornment, or subtlety.
   • 1914, Booth Tarkington, chapter 14, in Penrod:

     Maurice hastily climbed the fence, and while he was thus occupied Mr. Samuel Williams received a great enlightenment. With startling rapidity Penrod, standing just outside the storeroom door, extended his arm within the room, deposited the licorice water upon the counter of the drug store, seized in its stead the bottle of smallpox medicine, and extended it cordially toward the advancing Maurice.
     Genius is like that—great, simple, broad strokes!

   • 2000 December 1, Julie Salamon, “Television Review: On a New Limb With Shirley MacLaine”, in New York Times, retrieved 18 October 2011:

     While the movie unfolds in broad strokes, Ms. MacLaine treats this character with exquisite sensitivity and without condescension.

   • 2010, James V. Smith, You Can Write a Novel, 2nd edition, →ISBN, page 55:

     So sketch with broad strokes, dial up the imagery on a few main points, and leave room for a reader to play a part in your novel.

• short strokes

• “broad strokes”, in OneLook Dictionary Search.