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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	NOTE 23: SUBSEQUENT EVENTS In January 2018, the Company surrendered the spectrum of television stations whose FCC licenses were held for sale as of December 31, 2017 as a result of the FCC spectrum auction and expects to recognize a net pretax gain of $133 million in the first quarter of 2018.