Employee Benefit Plans - Components of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	$ 79.1	$ 73.6	$ 139.7	$ 132.4
Operating expenses
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	9.2	7.4	18.3	14.8
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	59.6	57.6	101.9	100.4
Research and development
Defined Benefit Plan Disclosure [Line Items]
Total pretax stock-based compensation expense	$ 10.3	$ 8.6	$ 19.5	$ 17.2