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Accumulated Other Comprehensive Income
 12 Months Ended
Dec. 31, 2023
Equity [Abstract]  
Accumulated Other Comprehensive Income ACCUMULATED OTHER COMPREHENSIVE INCOME
Foreign currency translation adjustments are generally not adjusted for income taxes as they relate to indefinite investments in non-U.S. subsidiaries.
The changes in Accumulated other comprehensive income by component are summarized below:
($ in millions)Foreign currency translation adjustments
Other adjustments (b)
Total
Balance, December 31, 2020$198.3 $(4.5)$193.8 
Other comprehensive loss before reclassifications, net of income taxes(13.4)— (13.4)
Amounts reclassified from accumulated other comprehensive income:
Increase— 1.9 (a)1.9 
Income tax impact— (0.6)(0.6)
Amounts reclassified from accumulated other comprehensive income, net of income taxes— 1.3 1.3 
Net current period other comprehensive (loss) income, net of income taxes(13.4)1.3 (12.1)
Balance, December 31, 2021184.9 (3.2)181.7 
Other comprehensive loss before reclassifications, net of income taxes(77.1)— (77.1)
Amounts reclassified from accumulated other comprehensive income:
Increase— 2.0 (a)2.0 
Income tax impact— (0.5)(0.5)
Amounts reclassified from accumulated other comprehensive income, net of income taxes— 1.5 1.5 
Net current period other comprehensive (loss) income, net of income taxes(77.1)1.5 (75.6)
Balance, December 31, 2022107.8 (1.7)106.1 
Other comprehensive loss before reclassifications, net of income taxes(1.6)— (1.6)
Amounts reclassified from accumulated other comprehensive income:
Sale of business0.3 (c)— 0.3 
Increase— 0.1 (a)0.1 
Amounts reclassified from accumulated other comprehensive income, net of income taxes0.3 0.1 0.4 
Net current period other comprehensive (loss) income, net of income taxes(1.3)0.1 (1.2)
Balance, December 31, 2023$106.5 $(1.6)$104.9 
(a) This accumulated other comprehensive income component is included in the computation of net periodic pension cost.
(b) Includes balances relating to defined benefit plans and supplemental executive retirement plans.
(c) Reclassified to Gain on sale of business in the Consolidated Statements of Earnings and Comprehensive Income.