XML 88 R72.htm IDEA: XBRL DOCUMENT v3.20.4
Derivatives and Risk Management - Non-designated Hedges (Details) - Not designated as hedging instruments - Forward contracts
R in Millions, $ in Millions
Jan. 02, 2021
USD ($)
Jan. 02, 2021
ZAR (R)
Dec. 28, 2019
USD ($)
Dec. 28, 2019
ZAR (R)
Derivative [Line Items]        
Fair value of designated forward contracts | $ $ 1.4   $ 1.5  
Hedged amount | R   R 21.9   R 22.6