The most common and most likely answer to this crossword clue is the 12 letter word COLD-HEARTED
I've seen this crossword clue in The Times
C
O
L
D
-
H
E
A
R
T
E
D
More clues leading to the result COLD-HEARTED
Buddy explains!
The straight part
We know that "detached and remote" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case detached and remote = cold-hearted.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COLD-HEARTED mean?
COLD-HEARTED adjective- Without sympathy, feeling or compassion; callous or heartless