Note 15 - Hedging Activities (Details Textual) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($) ozt	Dec. 31, 2020 USD ($)
Derivative, Notional Amount	$ 13,543	$ 14,740
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	47
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	52	60
Other Comprehensive Income (Loss), Cash Flow Hedge, Reclassification for Discontinuance, before Tax		14
New Investment Hedges [Member] \| Cash Flow Hedging [Member]
Derivative, Notional Amount	780	1,100
Leased Precious Metal Pools [Member] \| Property and Equipment, Net [Member]
Derivative Instruments in Hedges, Assets, at Fair Value, Total	107
Foreign Exchange Forward [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivative, Notional Amount	$ 780	892
Foreign Exchange Forward [Member] \| Net Investment Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivative, Notional Amount		$ 251
Lease Precious Metals [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivative, Nonmonetary Notional Amount, Mass (Troy Ounce) \| ozt	7,559

Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580

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Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from discontinuance of cash flow hedge included in assessment of hedge effectiveness.

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