Acquisitions (Fair Value Of Total Consideration Transferred And Major Class Of Consideration) (Details) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Acquired Nsc Centers [Member]
Business Acquisition [Line Items]
Accounts receivable	$ 16,032
Supplies, inventory, prepaid and other current assets	5,357
Investment in unconsolidated affiliates	10,710
Property and equipment	13,347
Goodwill	168,544
Other intangible assets	0
Accounts payable	(2,574)
Other accrued liabilities	(4,609)
Long-term debt	(2,900)
Other long-term liabililties	(422)
Total fair value	203,485
Less: Fair value attributable to noncontrolling interests	71,322
Acquisition date fair value of total consideration transferred	132,163
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Accounts receivable	2,180	2,033
Supplies, inventory, prepaid and other current assets	730	792
Investment in unconsolidated affiliates	0	0
Property and equipment	4,016	1,720
Goodwill	87,505	60,250
Other intangible assets	1,750	0
Accounts payable	(709)	(1,077)
Other accrued liabilities	(150)	(90)
Long-term debt	(2,699)	(199)
Other long-term liabililties	0	0
Total fair value	92,623	63,429
Less: Fair value attributable to noncontrolling interests	36,286	21,814
Acquisition date fair value of total consideration transferred	$ 56,337	$ 41,615

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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The amount of acquisition cost of a business combination allocated to current assets.

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The amount of acquisition cost of a business combination allocated to receivables.

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The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity.

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The amount of acquisition cost of a business combination allocated to accrued expenses of the acquired entity.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity.

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The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill.

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The amount of acquisition cost of a business combination allocated to other noncurrent liabilities of the acquired entity.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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The net amount recognized as of the acquisition date for the aggregate assets, including goodwill, in excess of or less than the aggregate liabilities assumed, less the noncontrolling interest in the acquiree. This amount represents the recognized net assets acquired which are attributable to the parent which may also be viewed as the incremental amount of equity attributable to the parent resulting from the business combination.

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