Goodwill and Other Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Jun. 30, 2013	Jun. 30, 2012
Changes in the carrying value of goodwill, by segment
Beginning Balance	$ 374,663	$ 173,206
Acquisitions	55,315	196,574
Goodwill impairment	(29)
Effect of foreign currency translation changes	(3,801)	(3,494)
Ending Balance	426,148	366,286
U.S./ Canada Operations [Member]
Changes in the carrying value of goodwill, by segment
Beginning Balance	224,306	163,897
Acquisitions	53,033	57,750
Goodwill impairment	(29)
Effect of foreign currency translation changes	(2)	(1)
Ending Balance	277,308	221,646
Latin America [Member]
Changes in the carrying value of goodwill, by segment
Beginning Balance	110,401	9,309
Acquisitions	2,282	99,486
Goodwill impairment	0
Effect of foreign currency translation changes	(1,446)	(2,752)
Ending Balance	111,237	106,043
Other International [Member]
Changes in the carrying value of goodwill, by segment
Beginning Balance	39,956	0
Acquisitions	0	39,338
Goodwill impairment	0
Effect of foreign currency translation changes	(2,353)	(741)
Ending Balance	$ 37,603	$ 38,597

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

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+ Details