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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - MARKET RISK (Details)
6 Months Ended
Jun. 30, 2017
item
Maximum  
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS  
Floating rate debt as a percentage of total debt outstanding 25.00%
Foreign exchange contracts | Minimum  
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS  
Period to hedge a minimum level of foreign currency denominated earnings exposures 5 years
Interest rate contracts - short-term borrowings  
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS  
Average swap rate, fixed (as a percent) 2.50%
Average swap rate, variable (as a percent) 2.10%
Interest rate contracts - long-term debt  
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS  
Average swap rate, fixed (as a percent) 3.80%
Equity contracts  
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS  
Number of forms of stock-based compensation with equity price risk 1