Debt (Details) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2023
Line of Credit Facility [Line Items]
Payments for long-term borrowings	$ 212,479	$ 710,789
Commercial paper	$ 1,200,000		$ 1,800,000
Debt to debt-shareholders' equity ratio	0.51
Maximum
Line of Credit Facility [Line Items]
Debt to debt-shareholders' equity ratio, covenant, maximum	0.65
Line of Credit | Term Loan Facility | Loans Payable
Line of Credit Facility [Line Items]
Payments for long-term borrowings	$ 200,000
Line of Credit | Term Loan Facility | Loans Payable | Debt Instrument, Periodic Payment, Interest, Period One
Line of Credit Facility [Line Items]
Periodic payment, interest, period	1 month
Line of Credit | Term Loan Facility | Loans Payable | Debt Instrument, Periodic Payment, Interest, Period Two
Line of Credit Facility [Line Items]
Periodic payment, interest, period	3 months
Line of Credit | Term Loan Facility | Loans Payable | Debt Instrument, Periodic Payment, Interest, Period Three
Line of Credit Facility [Line Items]
Periodic payment, interest, period	6 months
Line of Credit | Term Loan Facility | Loans Payable | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.225%