Registration statement for securities of certain foreign private issuers

Financial Risk Management Objectives and Policies - Summary of Significant Exchange Rates (Detail)

v3.21.2
Financial Risk Management Objectives and Policies - Summary of Significant Exchange Rates (Detail)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
GBP [member]    
Foreign Exchange Rates [Line Items]    
Average rate 0.7760 0.7835
Year-end spot rate 0.7321 0.7618
CAD [member]    
Foreign Exchange Rates [Line Items]    
Average rate 1.3433 1.3251
Year-end spot rate 1.2750 1.30328
RWF [member]    
Foreign Exchange Rates [Line Items]    
Average rate 959.1820 914.2488
Year-end spot rate 988.0837 947.075
SGD [member]    
Foreign Exchange Rates [Line Items]    
Average rate 1.3789 1.3111
Year-end spot rate 1.3224 1.34555
INR [member]    
Foreign Exchange Rates [Line Items]    
Average rate 74.0038  
Year-end spot rate 73.2901