General synonyms:
* Global
* Worldwide
* International
* Universal
* Planetary
* Transnational
* Cosmopolitan
* Across the globe
* All over the world
More specific synonyms:
* For geographical scope: Global, worldwide, international, transnational
* For influence or impact: Universal, far-reaching, widespread, pervasive
* For communication: Broadcasting, circulating, disseminated, distributed
* For knowledge or awareness: Common knowledge, well-known, ubiquitous
The best synonym will depend on the specific context of your sentence.