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Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Long-term Debt Current and Noncurrent
Long-term Debt, Including Current Maturities	$ 598,306	$ 598,204
Debt Issuance Costs, Net	(6,198)	(4,121)
Long-term Debt, Current Maturities [Abstract]
Long-term Debt, Less Current Maturities	592,108	594,083
2.650% Senior Notes due 2020 [Member]
Long-term Debt Current and Noncurrent
Long-term Debt	299,823	0
3.875% Senior Unsecured Notes Due in 2022 [Member]
Long-term Debt Current and Noncurrent
Long-term Debt	0	299,940
Long-term Debt, Current Maturities [Abstract]
Debt Instrument, Unamortized Discount		100
4.625% Senior Unsecured Notes Due in 2028
Long-term Debt Current and Noncurrent
Long-term Debt	298,483	298,264
Long-term Debt, Current Maturities [Abstract]
Debt Instrument, Unamortized Discount	1,500	$ 1,700
Two Point Eight Percent Senior Unsecured Notes Due In Two Thousand And Thirty One
Long-term Debt, Current Maturities [Abstract]
Debt Instrument, Unamortized Discount	$ 200

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- Definition

Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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