Goodwill and Other Intangible Assets (Details 3) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Finite-lived intangibles
Accumulated amortization	$ (174,203)	$ (149,787)
Customer Relationships [Member]
Finite-lived intangibles
Gross carrying amount	1,409,631	268,208
Accumulated amortization	(128,333)	(98,412)
Net carrying amount	1,281,298	169,796
Other Intangible Assets [Member]
Finite-lived intangibles
Gross carrying amount	78,181	71,114
Accumulated amortization	(45,870)	(51,375)
Net carrying amount	$ 32,311	$ 19,739