Changes in Carrying Amount of Goodwill and Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 31, 2013
Goodwill [Roll Forward]
Balance at September 30, 2013	$ 3,293,198
Acquisitions	51,871
Purchase accounting adjustments	542
Amortization	0
Effect of foreign currency translation	4,760
Balance at December 31, 2013	3,350,371
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Balance at September 30, 2013	953,278
Acquisitions	43,409
Purchase accounting adjustments	(59)
Amortization	(42,666)
Effect of foreign currency translation	347
Balance at December 31, 2013	$ 954,309

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Intangible assets, amortization expense

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Purchase accounting adjustments needed to revise the carrying amount of the intangibles to fair value.

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The increase (decrease) to the recorded value of the intangibles for foreign currency translation adjustments.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of other (increase) decrease of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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