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Note 10 - Hedging Activities (Details Textual)
€ in Millions, $ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2023
USD ($)
ozt
Dec. 31, 2022
USD ($)
GT
Jun. 30, 2023
EUR (€)
May 15, 2023
EUR (€)
Derivative, Notional Amount $ 8,125 $ 10,193    
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months 41      
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax 76 19    
Net Investment Hedging [Member]        
Non-derivative, Notional Amount | €       € 850
Non-derivative Asset, Subject to Master Netting Arrangement, before Offset 920   € 850  
New Investment Hedges [Member] | Cash Flow Hedging [Member]        
Derivative, Notional Amount 310 419    
Leased Precious Metal Pools [Member]        
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) (269) (95)    
Leased Precious Metal Pools [Member] | Property and Equipment, Net [Member]        
Derivative Instruments in Hedges, Assets, at Fair Value 104 278    
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]        
Derivative, Notional Amount $ 310 $ 419    
Derivative, Nonmonetary Notional Amount, Mass (Troy Ounce) 23,152 23,152