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EQUITY - Schedule Of Number Of Issued And Outstanding Common Shares And Unexercised Options (Details) - Common equity - shares
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of classes of share capital [line items]      
Shares Outstanding (in shares) 958,773,120.00000 958,168,417 961,290,839
Unexercised options and other share-based plans (in shares) 47,474,284 43,798,733  
Total diluted shares (in shares) 1,006,247,404 1,001,967,150  
Class A shares      
Disclosure of classes of share capital [line items]      
Shares Outstanding (in shares) 958,688,000 958,083,297  
Class B shares      
Disclosure of classes of share capital [line items]      
Shares Outstanding (in shares) 85,120 85,120  
Long-Term Compensation Arrangements | Class A shares      
Disclosure of classes of share capital [line items]      
Shares Outstanding (in shares) 30,569,215 27,846,452