Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Shareholders' equity Dividends Declared (Details)	3 Months Ended				6 Months Ended
Shareholders' equity Dividends Declared (Details)	Jun. 30, 2023 SFr / shares	Jun. 30, 2023 $ / shares	Jun. 30, 2022 SFr / shares	Jun. 30, 2022 $ / shares	Jun. 30, 2023 SFr / shares	Jun. 30, 2023 $ / shares	Jun. 30, 2022 SFr / shares	Jun. 30, 2022 $ / shares
United States of America, Dollars
Equity, Class of Treasury Stock [Line Items]
Common Stock, Dividends, Per Share, Declared \| $ / shares		$ 0.86		$ 0.83		$ 1.69		$ 1.63
Switzerland, Francs
Equity, Class of Treasury Stock [Line Items]
Common Stock, Dividends, Per Share, Declared \| SFr / shares	SFr 0.77		SFr 0.80		SFr 1.54		SFr 1.54