Part And Parcel Meaning

(idiomatic) An integral or essential piece; that which must be done or accepted as part of something else.

Example:   Regular maintenance is part and parcel of owning a car.
1998, Wilhelm Geuder and Miriam Butt, The Projection of Arguments, Introduction
  Argument structure is thus considered to be part and parcel of the information associated with lexical, syntactically atomic verbs.