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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 |  |

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- Definition Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 + Details
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