Financial Instruments (Narrative) (Details) ¥ in Millions, $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 JPY (¥)
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	$ 0	$ 0	$ 0	$ 0
Proceeds from net investment hedge terminations			28	0
January 2023
Derivative [Line Items]
Proceeds from net investment hedge terminations			28
Cash Flow Hedging [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax		2	(1)	(2)
Foreign Exchange Contract [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	16	43	5	21
Interest Income (Expense), Nonoperating, Net	4	4	7	8
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	1		2
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Subsequent Event | Forecast [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net					$ 3
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swap
Derivative [Line Items]
Derivative Liability, Notional Amount	200	200	200	200
Designated as Hedging Instrument | Net Investment Hedging [Member] | Currency Swap [Member] | January 2023
Derivative [Line Items]
Derivatives, Hedge Discontinuances, Termination of Hedging Instrument, Notional Amount	300		300			¥ 38,000
Designated as Hedging Instrument | Net Investment Hedging [Member] | Currency Swap [Member] | September 2025
Derivative [Line Items]
Derivative Asset, Notional Amount	120		120			18,000
Designated as Hedging Instrument | Net Investment Hedging [Member] | Currency Swap [Member] | June 2027
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 120		$ 120			¥ 18,000
Other Nonoperating Income (Expense) [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		$ (3)		$ 3