Equity Incentive Program - Narrative (Details) - $ / shares	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards issued during period (in shares)	359,715	335,285
Fair value per share at date of grant (in dollars per share)	$ 47.27	$ 42.07
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards issued during period (in shares)	43,656	40,087
Award vesting period	3 years
Fair value per share at date of grant (in dollars per share)	$ 249.48	$ 196.40
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards issued during period (in shares)	88,121	79,556
Fair value per share at date of grant (in dollars per share)	$ 153.25	$ 160.21