Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating Revenues
Operating revenues	$ 2,224.0	$ 1,995.1
Operating Expenses
Compensation and benefits	802.6	725.5
Sales, distribution and marketing	510.1	506.5
Information systems and technology	123.8	116.5
Occupancy	56.3	55.7
Amortization of intangible assets	58.3	58.2
General, administrative and other	115.2	123.6
Total operating expenses	1,666.3	1,586.0
Operating Income	557.7	409.1
Other Income (Expenses)
Investment and other income, net	57.0	77.2
Interest expense	(19.3)	(29.7)
Expenses of consolidated investment products	13.2	6.3
Other Income, Net	138.2	128.2
Income before taxes	695.9	537.3
Taxes on income	151.1	142.5
Net income	544.8	394.8
Less: net income attributable to
Redeemable noncontrolling interests	7.5	18.7
Nonredeemable noncontrolling interests	84.1	30.8
Net Income Attributable to Franklin Resources, Inc.	$ 453.2	$ 345.3
Earnings per Share
Basic	$ 0.89	$ 0.67
Diluted	$ 0.88	$ 0.67
CIPs [Member]
Other Income (Expenses)
Investment and other income, net	$ 104.7	$ 91.1
Expenses of consolidated investment products	(4.2)	(10.4)
Less: net income attributable to
Redeemable noncontrolling interests	(4.8)	13.0
Investment management fees [Member]
Operating Revenues
Operating revenues	1,760.5	1,540.4
Sales and distribution fees [Member]
Operating Revenues
Operating revenues	398.2	396.9
Shareholder servicing fees [Member]
Operating Revenues
Operating revenues	47.7	49.4
Other [Member]
Operating Revenues
Operating revenues	$ 17.6	$ 8.4