Employee Benefit Plans - Components of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	$ 62.8	$ 56.3	$ 202.5	$ 188.7
Operating expenses
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	9.0	7.8	27.3	22.6
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	45.5	39.2	147.4	139.6
Research and development
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	$ 8.3	$ 9.3	$ 27.8	$ 26.5