Debt (Tables)

12 Months Ended

Jun. 30, 2015

Debt Disclosure [Abstract]

Schedule of long-term debt outstanding

Long-term debt outstanding as of June 30, 2015 and 2014 consisted of the following: 

	June 30,
($ in millions)	2015		2014
Medium-term notes, Series B at 6.97% to 7.10% due from April 2018 to May 2018 (face value of $55.0 million at June 30, 2015 and 2014)	$	55.0	$	55.0
Senior unsecured notes, 5.20% due July 2021 (face value of $250.0 million at June 30, 2015 and 2014)	252.5		249.7
Senior unsecured notes, 4.45% due March 2023 (face value of $300.0 million at June 30, 2015 and 2014)	299.6		299.6
Total	607.1		604.3
Less amounts due within one year	—		—
Long-term debt, net of current portion	$	607.1	$	604.3