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Accumulated Other Comprehensive Loss
12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Accumulated Other Comprehensive Loss ACCUMULATED OTHER COMPREHENSIVE LOSS
The changes in accumulated other comprehensive loss by component are summarized below ($ in millions):
Foreign Currency Translation AdjustmentsUnrealized Pension CostsTotal Accumulated Other Comprehensive Loss
Balance, December 31, 2022$(240.5)$15.4 $(225.1)
Other comprehensive loss before reclassifications:
Increase (decrease)13.8 (7.7)6.1 
Income tax impact3.0 1.5 4.5 
Other comprehensive income (loss) before reclassifications, net of income taxes16.8 (6.2)10.6 
Amounts reclassified from accumulated other comprehensive loss income:
Decrease— (3.3)(3.3)
Income tax impact— 0.6 0.6 
Amounts reclassified from accumulated other comprehensive loss, net of income taxes— (2.7)(2.7)
Net current period other comprehensive income (loss), net of income taxes16.8 (8.9)7.9 
Balance, December 31, 2023$(223.7)$6.5 $(217.2)
Other comprehensive loss before reclassifications:
Decrease(143.1)(2.6)(145.7)
Income tax impact(8.3)0.6 (7.7)
Other comprehensive loss before reclassifications, net of income taxes(151.4)(2.0)(153.4)
Amounts reclassified from accumulated other comprehensive loss income:
Decrease— (0.7)(0.7)
Income tax impact— 0.2 0.2 
Amounts reclassified from accumulated other comprehensive loss, net of income taxes— (0.5)(0.5)
Net current period other comprehensive loss, net of income taxes(151.4)(2.5)(153.9)
Balance, December 31, 2024$(375.1)$4.0 $(371.1)
Other comprehensive loss before reclassifications:
Increase239.9 0.4 240.3 
Income tax impact16.5 (0.1)16.4 
Other comprehensive income before reclassifications, net of income taxes256.4 0.3 256.7 
Amounts reclassified from accumulated other comprehensive loss income:
Decrease— 1.4 1.4 
Income tax impact— (0.2)(0.2)
Amounts reclassified from accumulated other comprehensive loss, net of income taxes— 1.2 1.2 
Net current period other comprehensive income, net of income taxes256.4 1.5 257.9 
Balance, December 31, 2025$(118.7)$5.5 $(113.2)