NEW YORK--(BUSINESS WIRE)--Discovery Communications LLC's (Discovery) 'BBB' Issuer Default Rating (IDR) is not affected by the company's agreement to purchase the exclusive TV and multi-platform broadcast rights for the four Olympic Games from 2018 through 2024 for 1.3 billion Euros (USD1.4 billion), according to Fitch Ratings. The rights will cover 50 European countries and territories and more than 700 million people. A complete list of Fitch's ratings on Discovery is provided at the end of t