Stockholders' Equity And Stock-Based Compensation (Summary Of Restricted Stock Units Issued To Officers, Directors, And Employees Under 2005 Stock Incentive Plan) (Details) shares in Thousands	3 Months Ended
Dec. 31, 2021 $ / shares shares
Shares
Shares, Non-vested at beginning of period \| shares	3,335
Shares, Granted \| shares	1,368
Shares, Vested \| shares	(999)
Shares, Forfeitures \| shares	(82)
Shares, Non-vested at end of period \| shares	3,622
Weighted-Average Grant Date Fair Value
Weighted Average Fair Value, Non-vested at beginning of period (in dollars per share) \| $ / shares	$ 77.46
Weighted Average Fair Value, Granted (in dollars per share) \| $ / shares	89.64
Weighted Average Fair Value, Vested (in dollars per share) \| $ / shares	71.31
Weighted Average Fair Value, Forfeitures (in dollars per share) \| $ / shares	77.64
Weighted Average Fair Value, Non-vested at end of period (in dollars per share) \| $ / shares	$ 83.75

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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-Topic 718
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-Paragraph 2
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
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-SubTopic 10
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-Paragraph 2
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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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-Paragraph 2
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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