Accrued Liabilities (Tables)

6 Months Ended

Dec. 31, 2018

Accrued Liabilities, Current [Abstract]

Schedule of accrued liabilities

Accrued liabilities consisted of the following as of December 31, 2018 and June 30, 2018:

($ in millions)	December 31, 2018		June 30, 2018
Accrued compensation and benefits	$	51.1	$	83.3
Accrued postretirement benefits	15.4		15.4
Deferred revenue	14.2		10.4
Derivative financial instruments	12.7		—
Accrued interest expense	10.4		10.4
Accrued pension liabilities	3.3		3.3
Accrued income taxes	1.9		1.4
Other	22.3		24.4
Total accrued liabilities	$	131.3	$	148.6