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Other–Net, (Income) Expense
3 Months Ended
Mar. 31, 2023
Nonoperating Income (Expense) [Abstract]  
Other–Net, (Income) Expense Other–Net, (Income) Expense
Other–net, (income) expense consisted of the following:
Three Months Ended March 31,
 20232022
Interest expense$102.8 $84.9 
Interest income(34.2)(7.0)
Net investment losses on equity securities (Note 5)13.7 425.4 
Retirement benefit plans(115.8)(93.3)
Other (income) expense (2.2)(59.3)
Other–net, (income) expense$(35.7)$350.7