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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 ComponentsLocation of
gain
Amount Reclassified from AOCI
Three Months Ended September 30,
($ in millions) (a)20232022
Cash flow hedging items:   
Commodity contractsCost of sales$1.4 $6.7 
Total before tax1.4 6.7 
Tax expense(0.4)(1.6)
Net of tax$1.0 $5.1 

Details about AOCI ComponentsLocation of
(loss) gain
Amount Reclassified from AOCI
Three Months Ended September 30,
($ in millions) (a)20232022
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 benefit0.3 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).