What are the ideas of queens Indian defence

I play the queens Indian defence and would like to know what the plans in the middle game will be.

Assuming you are using the Queen's Indian correctly and not as a "catch-all" defense, which if you are, you completely don't understand the Queen's Indian at all as you are allowing what it's designed to prevent, the idea behind the Queen's Indian is to control e4.

After 1.d4 Nf6 (stopping 2.e4) 2.c4 e6 3.Nf3, the move 3.Nf3 does NOTHING to contribute to the fight for e4, so Black has at least 2 moves before he has to worry about e4 coming.  Therefore, he has time to play 3...b6 and 4...Bb7.

However, if White plays 3.Nc3, threatening 4.e4, then only a chess dunce would play 3...b6 because it does nothing to contribute to your initial idea when you played 1...Nf6 and 2...e6, and that was to prevent e4.

Therefore, after 1.d4 Nf6 2.c4 e6 3.Nc3, Black needs to play 3...d5 (stopping 4.e4), 3...Bb4 (also stopping 4.e4 via the pin), or 3...c5 (directly transposing to the Benoni, which is highly theoretical).

If you are playing 1.d4 Nf6 2.c4 e6 3.Nc3 b6, give it up now as you clearly don't understand its purpose.

Such a boring defense, I would expect middle game plans to include coffee and stretching legs.

Hi ! I play the queen's indian defence myself and the common middlegame ideas are to repel any attacks and launch an attack on the king side of white castles king side (what mostly happens) similar to the Dutch defence, Ne4 F5 h6 g5 and so on

QID is fairly flexible. black controls e4 for as long as he can, often ending up placing the knight there. 

Black will often aim for d5 and c5, BUT the purpose of d5 is usually for the d pawn to be traded and clearing some congestion on blacks pieces, increasing queen range, and possibly trying to inflict an isolated d pawn. Whether the pawn on c5 should be traded or not is more sensitive to the specific position.

but in other cases you can get a sort- nimzo-queen's indian hybrid, and black can play for other pawn formations, like d6-e5-f5 (often in different orders) or even e5 and c5.

Basically QID is all about trying to create weaknesses without risking too muchand keeping a flexible healthy pawn structure. The games tend to be a lot less decisive than in nimzo indian lines, where positions can be quite unbalanced from the start, so QID has a reputation as a bit of a draw weapon. It's actually one of its weaknesses, since if white plays steady and careful, its really hard for black to get winning chances  unless you are a really good endgame player.