Common Stock (Tables)

12 Months Ended

Jun. 30, 2018

Stockholders' Equity Note [Abstract]

Schedule of Stock Repurchases

Repurchases of the Company’s common and class B stock are as follows:

Years ended June 30,	2018		2017		2016
(In millions)
Number of shares	0.5		0.9		0.7
Cost at market value	$	31.1	$	53.3	$	31.1