Consolidated Statement of Changes in Equity (Parenthetical) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash dividends declared (USD per share)		$ 5.38	$ 4.98	$ 4.58
Retained Earnings
Acquisition and surrender of common shares	[1]	$ 223.9	$ 41.1	$ 36.6

[1] For accounting purposes, the Company treats repurchased shares as constructively retired when acquired and accordingly charges the purchase price against Common Stock par value, Additional paid-in capital, to the extent available, and Retained earnings. The change in Retained earnings of $223.9 million, $41.1 million and $36.6 million in 2025, 2024 and 2023, respectively, reflects this accounting treatment.