Nature of Operations and Summary of Significant Accounting Policies Treasury Stock (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Sep. 30, 2020	Jun. 30, 2020
Class of Stock Disclosures [Abstract]
Treasury Stock, Common, Shares	27,393	26,993
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,598	2,998
Treasury Stock, Value	$ 1,247,546	$ 1,181,673
Treasury Stock, Shares, Acquired	400

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

Number of previously issued common shares repurchased by the issuing entity and held in treasury.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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- Definition

The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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