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Description of Business	12 Months Ended
Description of Business	Apr. 30, 2017
Description of Business [Abstract]
Description of Business	Note 1 – Description of Business The Company, founded in 1807, was incorporated in the state of New York on January 15, 1904. As used herein the term “Company” means John Wiley & Sons, Inc., and its subsidiaries and affiliated companies, unless the context indicates otherwise. The Company is a global research and learning company. Through its Research segment, the Company provides scientific, technical, medical, and scholarly journals, as well as related content and services, to academic, corporate, and government libraries, learned societies, and individual researchers and other professionals. The Publishing segment provides scientific, professional, and education books and related content in print and digital formats, as well as test preparation services and course workflow tools, to libraries, corporations, students, professionals, and researchers. The Solutions segment provides online program management services for higher education institutions and learning, development, and assessment services for businesses and professionals. The Company’s operations are primarily located in the United States, Canada, United Kingdom, Germany, Singapore and Australia. Effective August 1, 2016, the Company completed a number of changes to its organizational structure that resulted in a change in how the Company manages its business, allocates resources and measures performance. As a result, the Company has revised its reportable segments to reflect how management currently reviews financial information and makes operating decisions. Refer to Note 18, “Segment Information” for additional information on the changes in reportable segments. All prior period amounts have been adjusted to reflect the reportable segment change.