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Accumulated Other Comprehensive Loss
12 Months Ended
Dec. 31, 2022
Equity [Abstract]  
Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss
The following table presents the changes in the components of accumulated other comprehensive loss, net of tax:
($ in millions)DerivativesEquity affiliate investment AOCIDefined benefit pension and other postretirement plansForeign currency translationTotal
Balance, December 31, 2019$(0.8)$0.4 $(40.3)$(108.9)$(149.6)
Other comprehensive income (loss) before reclassifications2.8 0.2 (2.5)40.1 40.6 
Amounts reclassified out(3.9)— 2.3 — (1.6)
Other comprehensive income (loss), net of tax(1.1)0.2 (0.2)40.1 39.0 
Balance, December 31, 2020(1.9)0.6 (40.5)(68.8)(110.6)
Other comprehensive (loss) income before reclassifications(1.4)0.9 7.4 (59.3)(52.4)
Amounts reclassified out2.1 — 1.3 — 3.4 
Other comprehensive (loss) income, net of tax0.7 0.9 8.7 (59.3)(49.0)
Balance, December 31, 2021(1.2)1.5 (31.8)(128.1)(159.6)
Other comprehensive (loss) income before reclassifications0.5 0.1 (9.3)(47.3)(56.0)
Amounts reclassified out0.9 — 31.7 — 32.6 
Other comprehensive (loss) income, net of tax1.4 0.1 22.4 (47.3)(23.4)
Balance, December 31, 2022$0.2 $1.6 $(9.4)$(175.4)$(183.0)

A summary of the reclassifications out of accumulated other comprehensive loss is presented in the following table ($ in millions):
Detail of components202220212020Location on Statement of Income
Gains (losses) on derivatives:
Foreign currency contracts$1.4 $(1.1)$(0.2)Net sales
Foreign currency contracts(4.1)(2.4)0.1 Cost of goods and services sold
Foreign currency contracts2.4 1.2 5.9 Other expense (income)
Forward treasury locks(0.3)(0.4)(0.4)Interest expense
Total before tax(0.6)(2.7)5.4 
Tax (expense) benefit(0.3)0.6 (1.5)
Net of tax$(0.9)$(2.1)$3.9 
Amortization of defined benefit pension and other postretirement plans:
Prior service credit$— $0.3 $0.6 (a)
Actuarial gains (losses)0.6 (0.2)(0.1)(a)
Settlements(52.2)(1.8)(3.7)(a)
Other(0.4)— — (a)
Total before tax(52.0)(1.7)(3.2)
Tax benefit 20.3 0.4 0.9 
Net of tax$(31.7)$(1.3)$(2.3)
Total reclassifications for the period, net of tax$(32.6)$(3.4)$1.6 

(a) These components are included in the computation of net periodic benefit cost. Please refer to Note 15, Benefit Plans, for additional details.