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Employee Benefit Plans (Tables)
 9 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Summary of Components of Stock-Based Compensation Expense
The following table represents pre-tax stock-based compensation expense for the three and nine months ended March 31, 2025 and 2024, respectively:
Three Months EndedNine Months Ended
March 31,March 31,
2025202420252024
Operating expenses$9.0 $7.8 $27.3 $22.6 
Selling, general and administrative expenses45.5 39.2 147.4 139.6 
Research and development8.3 9.3 27.8 26.5 
Total stock-based compensation expense$62.8 $56.3 $202.5 $188.7 
Summary of Net Benefit Costs
The components of net pension income were as follows:
Three Months EndedNine Months Ended
March 31,March 31,
 2025202420252024
Service cost – benefits earned during the period$1.5 $1.3 $4.5 $3.9 
Interest cost on projected benefits21.8 21.2 65.5 63.4 
Expected return on plan assets(29.0)(29.0)(87.0)(86.9)
Net amortization and deferral0.7 0.7 2.2 2.2 
Net pension income$(5.0)$(5.8)$(14.8)$(17.4)