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Labor Union Contracts	12 Months Ended
Labor Union Contracts	Dec. 31, 2018
Labor Union Contracts
Labor Union Contracts	Labor Union Contracts As of December 31, 2018, approximately 8,400, or 44% of our employees were members of various bargaining units represented by the Communication Workers of America ("CWA") and the International Brotherhood of Electrical Workers ("IBEW"). We believe that relations with our employees continue to be generally good.