His Hermeneuticalness, my friend Fr Tim Finigan, has a good post which merits your attention.
Read the whole thing there, but here is a sample:
Popes may also teach privately. Such teaching would be expressed, for example, in sermons, interviews or books. When Pope Benedict published his book Jesus of Nazareth, he said:
It goes without saying that this book is in no way an exercise of the magisterium, but is solely an expression of my personal search “for the face of the Lord” (cf. Ps 27:8). Everyone is free, then, to contradict me. I would only ask my readers for that initial goodwill without which there can be no understanding.
I mentioned this in a post three years ago and, I think reasonably, said that the same would apply to papal interviews with journalists.
Hence, if you are troubled by some statements that Pope Francis has made in his recent interviews, it is not disloyalty, or a lack of Romanita to disagree with the details of some of the interviews which were given off-the-cuff.
Naturally, if we disagree with the Holy Father, we do so with the deepest respect and humility, conscious that we may need to be corrected. However, papal interviews do not require either the assent of faith that is given to ex cathedra statements or that internal submission of mind and will that is given to those statements that are part of his non-infallible but authentic magisterium.
A good reminder. Read the rest there.