Note 12 - Financial Instruments (Details Textual) € in Millions, $ in Millions, ¥ in Billions			3 Months Ended			9 Months Ended		12 Months Ended
		May 15, 2023 EUR (€)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) ozt	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) ozt	Sep. 30, 2024 EUR (€)	Jun. 30, 2024 JPY (¥)
Derivative, Notional Amount	[1]		$ 11,986			$ 11,986		$ 7,271
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax			41			41		(54)
Other Accrued Liabilities [Member]
Deferred Payments [Member]			141			141
Other Liabilities [Member]
Deferred Payments [Member]			237			237
Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount			8,660			8,660		5,042
Currency Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount			215	$ 215		215				¥ 23
Derivative, Term of Contract (Year)				3 years
Derivative Liability, Notional Amount				$ 68
Derivative, Fair Value, Net			64			64
Leased Precious Metal Pools [Member]
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)			(129)			(129)		(239)
Leased Precious Metal Pools [Member] | Property and Equipment, Net [Member]
Derivative Instruments in Hedges, Assets, at Fair Value			65			65		90
Net Investment Hedging [Member]
Non-derivative, Subject to Master Netting Arrangement, before Offset			943			943			€ 850
Notional Amount of Nonderivative Instruments | €		€ 850
Foreign Currency Transaction Loss, before Tax			39			9
Foreign Currency Transaction Gain, before Tax					$ 29		$ 36
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount			864			$ 864		$ 241
Derivative, Nonmonetary Notional Amount, Mass (Troy Ounce) | ozt						13,762		20,160
Cash Flow Hedging [Member] | Lease Precious Metals [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount			$ 121			$ 121		$ 229

[1] The amounts above do not include €850 million of euro-denominated debt ($903 million equivalent as of June 30, 2024), which is a non-derivative financial instrument designated as a net investment hedge.