Debt (Tables)

12 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Schedule of long-term debt outstanding

Long-term debt outstanding as of June 30, 2016 and 2015 consisted of the following: 

	June 30,
($ in millions)	2016		2015
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, 2016 and 2015)	$	55.0	$	55.0
Senior unsecured notes, 5.20% due July 2021 (face value of $250.0 million at June 30, 2016 and 2015)	257.8		250.5
Senior unsecured notes, 4.45% due March 2023 (face value of $300.0 million at June 30, 2016 and 2015)	298.5		298.3
Total	611.3		603.8
Long-term debt, net of current portion	$	611.3	$	603.8