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Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Pay vs Performance Disclosure
Net income attributable to Franklin Resources, Inc.	$ 151.4	$ 124.2	$ 315.0	$ 375.5

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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