And call me mistaken, but wasn't one of the more revolutionary things the Pope did his declaration that you needn't be Catholic--that perhaps the other denominations were all separate paths on the road to Christ (and that, essentially, we are all part of the Body of Christ, that He isn't just a big hand, or a foot, but is made of many different parts, all functioning as one body)...
You are, but it's a complex teaching.
The Pope's point was that the only way someone can have the full truth of Christ and receive the full grace of the sacraments is to be in union with the Catholic Church.
At the same time, those people who believe in Jesus Christ and follow Him as far as they are able are not excluded from Him even if they are not (or not yet, as he would say) Catholics.
His point is that if a Baptist gets to heaven it is not because he adheres to some specifically Baptist doctrine like the inefficacy of water baptism - that is a fault in him. What would win him salvation is a real faith in Jesus (and when Catholics say faith they do not mean a dry, academic belief or an emotional sentiment, but a total commitment of life) not a false disbelief in baptism.
20. From what has been stated above, some points follow that are necessary for theological reflection as it explores the relationship of the Church and the other religions to salvation.
Above all else, it must be firmly believed that “the Church, a pilgrim now on earth, is necessary for salvation: the one Christ is the mediator and the way of salvation; he is present to us in his body which is the Church. ...This doctrine must not be set against the universal salvific will of God (cf. 1 Tim 2:4); “it is necessary to keep these two truths together, namely, the real possibility of salvation in Christ for all mankind and the necessity of the Church for this salvation”.
...For those who are not formally and visibly members of the Church, “salvation in Christ is accessible by virtue of a grace which, while having a mysterious relationship to the Church, does not make them formally part of the Church, but enlightens them in a way which is accommodated to their spiritual and material situation. This grace comes from Christ; it is the result of his sacrifice and is communicated by the Holy Spirit”; it has a relationship with the Church, which “according to the plan of the Father, has her origin in the mission of the Son and the Holy Spirit”.
21. With respect to the way in which the salvific grace of God — which is always given by means of Christ in the Spirit and has a mysterious relationship to the Church — comes to individual non-Christians, the Second Vatican Council limited itself to the statement that God bestows it “in ways known to himself”. Theologians are seeking to understand this question more fully. Their work is to be encouraged, since it is certainly useful for understanding better God's salvific plan and the ways in which it is accomplished. However, from what has been stated above about the mediation of Jesus Christ and the “unique and special relationship” which the Church has with the kingdom of God among men — which in substance is the universal kingdom of Christ the Saviour — it is clear that it would be contrary to the faith to consider the Church as one way of salvation alongside those constituted by the other religions, seen as complementary to the Church or substantially equivalent to her, even if these are said to be converging with the Church toward the eschatological kingdom of God.
Certainly, the various religious traditions contain and offer religious elements which come from God, and which are part of what “the Spirit brings about in human hearts and in the history of peoples, in cultures, and religions”. Indeed, some prayers and rituals of the other religions may assume a role of preparation for the Gospel, in that they are occasions or pedagogical helps in which the human heart is prompted to be open to the action of God. One cannot attribute to these, however, a divine origin or an ex opere operato salvific efficacy, which is proper to the Christian sacraments. Furthermore, it cannot be overlooked that other rituals, insofar as they depend on superstitions or other errors (cf. 1 Cor 10:20-21), constitute an obstacle to salvation.
22. With the coming of the Saviour Jesus Christ, God has willed that the Church founded by him be the instrument for the salvation of all humanity (cf. Acts 17:30-31). This truth of faith does not lessen the sincere respect which the Church has for the religions of the world, but at the same time, it rules out, in a radical way, that mentality of indifferentism “characterized by a religious relativism which leads to the belief that ‘one religion is as good as another'”. If it is true that the followers of other religions can receive divine grace, it is also certain that objectively speaking they are in a gravely deficient situation in comparison with those who, in the Church, have the fullness of the means of salvation. However, “all the children of the Church should nevertheless remember that their exalted condition results, not from their own merits, but from the grace of Christ. If they fail to respond in thought, word, and deed to that grace, not only shall they not be saved, but they shall be more severely judged”. ...Those who obey the promptings of the Spirit of truth are already on the way of salvation. But the Church, to whom this truth has been entrusted, must go out to meet their desire, so as to bring them the truth. Because she believes in God's universal plan of salvation, the Church must be missionary”. Inter-religious dialogue, therefore, as part of her evangelizing mission, is just one of the actions of the Church in her mission ad gentes. Equality, which is a presupposition of inter-religious dialogue, refers to the equal personal dignity of the parties in dialogue, not to doctrinal content, nor even less to the position of Jesus Christ — who is God himself made man — in relation to the founders of the other religions. Indeed, the Church, guided by charity and respect for freedom, must be primarily committed to proclaiming to all people the truth definitively revealed by the Lord, and to announcing the necessity of conversion to Jesus Christ and of adherence to the Church through Baptism and the other sacraments, in order to participate fully in communion with God, the Father, Son and Holy Spirit.