Is a council holding higher authority than the pope?
@Kei No. There are 6 Levels of the Magisterium in the Church.
An Ecumenical Council and an ex Cathedra Papal decree are both tied as the highest level of the Churches Magisterium.
They are at the Extraordinary, Universal and Infallible Level 1/2 of the Catholic Magisterium.
|Teacher:|Level of magisterium:|Degree of certitude:|Assent required:|
Level 1. Pope ex cathedra|Extraordinary (and universal teaching of the Church)|Infallible on matters of faith and morals|Full assent of faith
Level 2. Bishops, in communion with Pope, defining doctrine at General Council|Extraordinary (and universal teaching of the Church)|Infallible on matters of faith and morals|Full assent of faith
Level 3. Bishops, in communion with Pope, together with the Pope, proposing definitively, dispersed but in agreement|Ordinary and universal teaching of the Church|Infallible on matters of faith and morals|Assent of faith
Level 4. Pope|Ordinary|Authoritative but non-infallible|Religious Assent. Religious submission of mind, intellect, and will
Level 5. Bishops in communion with the Pope|Ordinary|Authoritative but non-infallible|Religious assent. Religious submission of mind, intellect, and will
Level 6. Theologians|Magisterium cathedrae magistralis (according to Thomas Aquinas)|Neither authoritative nor infallible|Legitimate disagreements and dialectic (according to the long tradition of Quaestiones Disputatae)