Earnings Per Share (Narrative) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share	$ 3.76	$ 3.60
Contingently Issuable Shares [Member] | Class B Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares excluded from earnings per share	1,000	1,000