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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Jan. 01, 2019
Segment Reporting Information [Line Items]    
Right-of-use assets $ 1,061.7  
Lease obligation $ 1,061.8  
ASU 2016-02 | Restatement    
Segment Reporting Information [Line Items]    
Right-of-use assets   $ 1,115.9
Lease obligation   $ 1,115.9