Reclassifications from Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Sep. 30, 2023

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Changes in AOCI by Component, Net of Tax

The changes in AOCI by component, net of tax, for the three months ended September 30, 2023 and 2022 were as follows:

Three Months Ended September 30, 2023 ($ in millions) (a)	Cash flow hedging items		Pension and other postretirement benefit plan items		Foreign currency items		Total
Balances at June 30, 2023	$	(7.0)	$	(95.5)	$	(40.5)	$	(143.0)
Other comprehensive loss before reclassifications	(0.2)		—		(2.1)		(2.3)
Amounts reclassified from AOCI (b)	(1.0)		0.8		—		(0.2)
Net other comprehensive (loss) income	(1.2)		0.8		(2.1)		(2.5)
Balances at September 30, 2023	$	(8.2)	$	(94.7)	$	(42.6)	$	(145.5)

Three Months Ended September 30, 2022 ($ in millions) (a)	Cash flow hedging items		Pension and other postretirement benefit plan items		Foreign currency items		Total
Balances at June 30, 2022	$	5.5	$	(132.9)	$	(46.1)	$	(173.5)
Other comprehensive loss before reclassifications	(0.2)		—		(3.3)		(3.5)
Amounts reclassified from AOCI (b)	(5.1)		1.0		—		(4.1)
Net other comprehensive (loss) income	(5.3)		1.0		(3.3)		(7.6)
Balances at September 30, 2022	$	0.2	$	(131.9)	$	(49.4)	$	(181.1)

(a)    All amounts are net of tax. Amounts in parentheses indicate debits.

(b)    See separate table below for further details.

Schedule of Amounts Reclassified from AOCI

The following is a summary of amounts reclassified from AOCI for the three months ended September 30, 2023 and 2022:

Details about AOCI Components	Location of gain	Amount Reclassified from AOCI Three Months Ended September 30,
($ in millions) (a)		2023		2022
Cash flow hedging items:
Commodity contracts	Cost of sales	$	1.4	$	6.7
Total before tax		1.4		6.7
Tax expense		(0.4)		(1.6)
Net of tax		$	1.0	$	5.1

Details about AOCI Components	Location of (loss) gain	Amount Reclassified from AOCI Three Months Ended September 30,
($ in millions) (a)		2023		2022
Amortization of pension and other postretirement benefit plan items:
Net actuarial loss	(b)	$	(1.6)	$	(2.0)
Prior service benefit	(b)	0.5		0.5
Total before tax		(1.1)		(1.5)
Tax benefit		0.3		0.5
Net of tax		$	(0.8)	$	(1.0)

(a)    Amounts in parentheses indicate debits to income/loss.

(b)    These AOCI components are included in the computation of net periodic benefit cost (see Note 7. Pension and Other Postretirement Benefits for additional details).