Financing (Long-Term Debt Repayments) (Narrative) (Details) € in Millions, SFr in Millions, ¥ in Billions	3 Months Ended
	Apr. 02, 2021 JPY (¥)	Dec. 31, 2023 CHF (SFr)	Dec. 08, 2023 CHF (SFr)	Dec. 31, 2022 CHF (SFr)	Nov. 15, 2022 EUR (€)	Jun. 30, 2022 EUR (€)
0.352% senior unsecured notes due 2021
Debt Instrument [Line Items]
Interest rate of debt instrument	0.352%
Senior notes | Floating rate senior unsecured notes due 2022
Debt Instrument [Line Items]
Debt instrument, face amount						€ 250
Senior notes | 2.05% senior unsecured notes due 2022
Debt Instrument [Line Items]
Debt instrument, face amount					€ 700
Interest rate of debt instrument					2.05%
Senior notes | 0.352% senior unsecured notes due 2021
Debt Instrument [Line Items]
Repayments of debt | ¥	¥ 30.0
Bonds | 0.5% senior unsecured bonds due 2023
Debt Instrument [Line Items]
Debt instrument, face amount | SFr		SFr 540	SFr 540	SFr 540
Interest rate of debt instrument		0.50%		0.50%