Hey I know Detente is a French word and that is is the subdueing I guess of the tensions between the two superpowers USA and USSR ( in russian its CSSR). But I'll look at what I have and see if I can find out anymore for you, but looking at teh syllabus will help you with understanding what you should look at to understand the influence of detente, such as the SALT I and II treaties, and improved relations such as Nixon 's visits to CHina and Russia. Things like that, compared with the Bay of Pigs and Cuban Missile Crisis of Keneddy's reign.
If a question on detente comes up it is likeyl to be about what occured and then maybe something on like why was it necessary, eg bay of pigs, and what ended it, eg Russia going into Afghanistan in 1979 to help out the communist govt. there.
I hope I've helped you a bit so far.