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Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	9 Months Ended
	Mar. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | segment	2
Adjustment to retained earnings	$ 2,709,234	$ 2,864,984	$ 2,678,860	$ 2,497,027	$ 2,256,431	$ 2,258,106	$ 2,117,251	$ 2,072,193
Retained Earnings [Member]
Summary Of Significant Accounting Policies [Line Items]
Adjustment to retained earnings	$ 2,941,336	$ 3,076,569	2,953,709	2,832,991	$ 2,711,639	$ 2,604,910	$ 2,500,506	$ 2,436,410
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Deferred revenue recognized, term	1 year
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Deferred revenue recognized, term	5 years
Cumulative Effect Of Change In Accounting Standards [Member]
Summary Of Significant Accounting Policies [Line Items]
Adjustment to retained earnings			(1,143)
Cumulative Effect Of Change In Accounting Standards [Member] | Retained Earnings [Member]
Summary Of Significant Accounting Policies [Line Items]
Adjustment to retained earnings			$ (1,143)
Cumulative Effect Of Change In Accounting Standards [Member] | Accounting Standards Update 2016-13 [Member]
Summary Of Significant Accounting Policies [Line Items]
Adjustment to retained earnings				$ 1,100

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Term Of Contract Under Revenue Recognition

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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-Name Accounting Standards Codification
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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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