Communication is widely recognised as an important capability for university graduates [Organisation for Economic Co-operation and Development. (2013). "OECD skills outlook 2013: First results from the survey of adult skills." Author. Retrieved from http://dx.doi.org/10.1787/9789264204256-en]. Yet, research suggests that it is often not adequately developed by Australian universities, remaining implicit in teaching and assessment. This is in part because Australian universities have historically conceptualised communication not as an "outcome" of disciplinary study, but as a generic, foundational competency or skill. It has therefore been managed outside the curriculum by establishing academic language and learning units that help students develop written and spoken communication through a range of student services. The services model of communication development is becoming untenable, however, given the increasing cultural and linguistic diversity of students and the recognised importance of communication as a graduate outcome. Whole-of-institution approaches are required to integrate communication into course curricula as a fundamental part of disciplinary learning, and develop the capacity of teaching staff to teach it. This paper explores Writing Across the Curriculum and Writing Inside the Disciplines, two complementary approaches used widely in the US for developing literacy in higher education. They emerged in the 1970s in response to the kind of student diversity now common in Australian universities, and offer institution-wide strategies for developing communication as an essential outcome of study in academic and professional disciplines.