ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS), Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other revenue	$ (21,497)	$ (23,715)	$ (35,804)	$ (41,103)
Interest expense	29,424	26,846	56,433	54,230
Provision for income taxes	72,271	66,857	134,280	143,469
Net income attributable to Raymond James Financial, Inc.	(125,847)	(113,463)	(232,176)	(239,759)
Available for sale securities | Reclassification out of accumulated other comprehensive income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(1,584)	(58)	(2,992)	(58)
Provision for income taxes	(602)	(22)	(1,137)	(22)
Net income attributable to Raymond James Financial, Inc.	982	36	1,855	36
Available for sale securities | Interest rate contract | Reclassification out of accumulated other comprehensive income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	1,531	60	2,939	60
Auction rate securities | Available for sale securities | Reclassification out of accumulated other comprehensive income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other revenue	$ 53	$ (2)	$ 53	$ (2)