§884
Creed › … › Paragraph 4. Christ's Faithful - Hierarchy, Laity, Consecrated Life
The episcopal college and its head, the Pope
"The college of bishops exercises power over the universal Church in a solemn manner in an ecumenical council." But "there never is an ecumenical council which is not confirmed or at least recognized as such by Peter's successor."
Source: Catechism of the Catholic Church (Vatican.va)