Earnings Per Share, Dividends and Dilution (Details 1) - $ / shares shares in Millions	3 Months Ended							12 Months Ended
	Dec. 31, 2025	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements								0.3	0.3	0.5
Common stock dividend (in dollars per share)	$ 2.31		$ 2.06		$ 1.87		$ 1.73	$ 8.99	$ 8.05	$ 7.34
Increase (Decrease) in Stock Dividend, Percentage		12.00%		10.00%		8.00%