XML 120 R73.htm IDEA: XBRL DOCUMENT v3.21.1
Lease Liability (Narrative) (Details) - Finance lease obligations [Member]
Dec. 31, 2020
Bottom of range [member]  
Disclosure of quantitative information about right-of-use assets [line items]  
Borrowings, interest rate 1.95%
Top of range [member]  
Disclosure of quantitative information about right-of-use assets [line items]  
Borrowings, interest rate 5.44%