Goodwill and Other Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Changes in the carrying value of goodwill, by segment
Beginning Balance	$ 433,300	$ 374,663
Acquisitions		60,107
Goodwill impairment		(29)
Effect of foreign currency translation changes	3,465	(3,801)
Ending Balance	436,765	430,940
U.S. & Canada Operations [Member]
Changes in the carrying value of goodwill, by segment
Beginning Balance	283,199	224,306
Acquisitions		57,825
Goodwill impairment		(29)
Effect of foreign currency translation changes	0	(2)
Ending Balance	283,199	282,100
Latin America [Member]
Changes in the carrying value of goodwill, by segment
Beginning Balance	110,209	110,401
Acquisitions		2,282
Goodwill impairment		0
Effect of foreign currency translation changes	1,228	(1,446)
Ending Balance	111,437	111,237
Other International [Member]
Changes in the carrying value of goodwill, by segment
Beginning Balance	39,892	39,956
Acquisitions		0
Goodwill impairment		0
Effect of foreign currency translation changes	2,237	(2,353)
Ending Balance	$ 42,129	$ 37,603