Condensed Consolidated Statement of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Common stock, par value (in usd per share)	$ 1		$ 1
Common Stock
Common stock, par value (in usd per share)	1	$ 1
Common Stock, Dividends, Per Share, Cash Paid	0.545	0.520
Class B Common Stock
Common stock, par value (in usd per share)	1	1	$ 1
Common Stock, Dividends, Per Share, Cash Paid	0.545	$ 0.520
Series A Preferred Stock
Preferred Stock, Dividends, Per Share, Cash Paid	$ 21.49