Ecumenical Counsels, the Magisterium, Sacred Tradition, or the solemn teachings of supreme pontiffs are binding to the faithful:
“But when either the Roman Pontiff or the Body of Bishops together with him defines a judgment, they pronounce it in accordance with Revelation itself, which all are obliged to abide by and be in conformity with, that is, the Revelation which as written or orally handed down is transmitted in its entirety through the legitimate succession of bishops and especially in care of the Roman Pontiff himself, and which under the guiding light of the Spirit of truth is religiously preserved and faithfully expounded in the Church.”
In accordance with, in conformity with, in its entirety...
How do Francis and Vat 2 meet these standards?
It seems even broader than that according to popes who taught that,
'the one duty of the multitude is to allow themselves to be led, and, like a docile flock, to follow the Pastors," "to suffer themselves to be guided and led in all things that touch upon faith or morals by the Holy Church of God through its Supreme Pastor the Roman Pontiff," "of submitting with docility to their judgment," with "no discussions regarding what he orders or demands, or up to what point obedience must go, and in what things he is to be obeyed... not only in person, but with letters and other public documents ;" and 'not limit the field in which he might and must exercise his authority, " for "obedience must not limit itself to matters which touch the faith: its sphere is much more vast: it extends to all matters which the episcopal power embraces," and not set up "some kind of opposition between one Pontiff and another. Those who, faced with two differing directives, reject the present one to hold to the past, are not giving proof of obedience to the authority which has the right and duty to guide them," "Nor must it be thought that what is expounded in Encyclical Letters does not of itself demand consent." (Sources http://www.freerepublic.com/focus/religion/3578348/posts?page=14#14)