Indian minister — not a guy using petty details (6)
I believe the answer is:
trivia
'petty details' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for trivia that I've seen before include "Petty details" , "Unimportant things or details" , "Unimportant things, items of little value" , "Unimportant things, don't waste time on them" , "Unimportant or valueless things" .)