Considered perfect agreement is initially exposed in papers (9)

I believe the answer is:

idealised

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'considered' is the definition.
(idealising is a kind of considering)

'perfect agreement is initially exposed in papers' is the wordplay.
'perfect agreement' becomes 'deal' (deal is a kind of agreement. I am not sure about the 'perfect' bit.).
'initially' indicates taking the first letters.
'in' is an insertion indicator.
'papers' becomes 'ID' (short for identification papers).
The first letter of 'exposed' is 'e'.
'deal'+'is'+'e'='dealise'
'dealise' put within 'id' is 'IDEALISED'.

Can you help me to learn more?

I've seen this clue in The Independent.

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