Franklin Resources (BEN) 10-K 13 Nov 17 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Sep. 30, 2017	Oct. 31, 2017	Mar. 31, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	Franklin Resources Inc
Entity Central Index Key	38,777
Document Type	10-K
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 14.2
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		553,908,023

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Operating Revenues
Investment management fees	$ 4,359.2	$ 4,471.7	$ 5,327.8
Sales and distribution fees	1,705.6	1,806.4	2,252.4
Shareholder servicing fees	225.7	243.6	262.8
Other	101.7	96.3	105.7
Total operating revenues	6,392.2	6,618	7,948.7
Operating Expenses
Sales, distribution and marketing	2,130.9	2,209.9	2,762.3
Compensation and benefits	1,333.7	1,360.9	1,453.3
Information systems and technology	219.8	207.3	224.3
Occupancy	121.3	134.1	132.7
General, administrative and other	322.2	340.1	348.5
Total operating expenses	4,127.9	4,252.3	4,921.1
Operating Income	2,264.3	2,365.7	3,027.6
Other Income (Expenses)
Investment and other income, net	336.3	184	40.4
Interest expense	(51.5)	(49.9)	(39.6)
Other income, net	284.8	134.1	0.8
Income before taxes	2,549.1	2,499.8	3,028.4
Taxes on income	759.4	742.1	923.7
Net income	1,789.7	1,757.7	2,104.7
Less: net income (loss) attributable to
Nonredeemable noncontrolling interests	40	29.4	75.5
Redeemable noncontrolling interests	53	1.6	(6.1)
Net Income Attributable to Franklin Resources, Inc.	$ 1,696.7	$ 1,726.7	$ 2,035.3
Earnings per Share
Basic	$ 3.01	$ 2.94	$ 3.29
Diluted	3.01	2.94	3.29
Dividends Declared per Share	$ 0.8	$ 0.72	$ 1.1

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net Income	$ 1,789.7	$ 1,757.7	$ 2,104.7
Other Comprehensive Income (Loss)
Net unrealized gains (losses) on investments, net of tax	2.2	(12.5)	(11.7)
Currency translation adjustments, net of tax	65.4	(18.3)	(184.2)
Net unrealized gains (losses) on defined benefit plans, net of tax	2.1	(2.4)	(0.6)
Total other comprehensive income (loss)	69.7	(33.2)	(196.5)
Total comprehensive income	1,859.4	1,724.5	1,908.2
Less: comprehensive income (loss) attributable to
Nonredeemable noncontrolling interests	40	29.4	75.5
Redeemable noncontrolling interests	53	1.6	(6.1)
Comprehensive Income Attributable to Franklin Resources, Inc.	$ 1,766.4	$ 1,693.5	$ 1,838.8

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Assets
Cash and cash equivalents	$ 8,749.7	$ 8,483.3
Receivables	767.8	746.4
Investments	1,393.6	2,416.6
Investments, at fair value	440	1,437.6
Property and equipment, net	517.2	523.2
Goodwill and other intangible assets, net	2,227.7	2,211.3
Other	176.5	156.7
Total Assets	17,534	16,098.8
Liabilities
Compensation and benefits	396.6	357.4
Accounts payable and accrued expenses	291.5	233.3
Dividends	113.3	104.6
Commissions	313.3	302
Debt	1,044.2	1,401.2
Deferred taxes	170.6	161.5
Other	273.4	267.3
Total liabilities	2,656.3	3,509.5
Commitments and Contingencies (Note 12)
Redeemable Noncontrolling Interests	1,941.9	61.1
Stockholders’ Equity
Preferred stock, $1.00 par value, 1,000,000 shares authorized; none issued	0	0
Common stock, $0.10 par value, 1,000,000,000 shares authorized; 554,865,343 and 570,345,156 shares issued and outstanding at September 30, 2017 and 2016	55.5	57
Retained earnings	12,849.3	12,226.2
Accumulated other comprehensive loss	(284.8)	(347.4)
Total Franklin Resources, Inc. stockholders’ equity	12,620	11,935.8
Nonredeemable noncontrolling interests	315.8	592.4
Total stockholders’ equity	12,935.8	12,528.2
Total Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity	17,534	16,098.8
Franklin Resources, Inc. [Member]
Assets
Cash and cash equivalents	8,523.3	8,247.1
Consolidated SIPs [Member]
Assets
Cash and cash equivalents	226.4	236.2
Receivables	234.1	47.9
Investments, at fair value	3,467.4	1,513.4
Other	0.9	1.4
Total Assets	3,928.8	1,798.9
Liabilities
Accounts payable and accrued expenses	124.1	65.2
Debt	53.4	682.2
Other	8.7	8.5
Total liabilities	186.2	755.9
Redeemable Noncontrolling Interests	1,941.9	61.1
Stockholders’ Equity
Total Franklin Resources, Inc. stockholders’ equity	1,511.8	414.1
Nonredeemable noncontrolling interests	288.9	567.8
Total stockholders’ equity	1,800.7	981.9
Total Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity	$ 3,928.8	$ 1,798.9

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Statement of Financial Position [Abstract]
Investments, at fair value	$ 440	$ 1,437.6
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	554,865,343	570,345,156
Common stock, shares outstanding	554,865,343	570,345,156

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Appropriated Retained Earnings of Consolidated Variable Interest Entities [Member]	Accumulated Other Comprehensive Loss [Member]	Stockholders' Equity [Member]	Nonredeemable Noncontrolling Interests [Member]
Stockholders' Equity [Roll Forward]
Adoption of new accounting guidance | Accounting Standards Update 2014-13 [Member]	$ (14.2)			$ (0.3)	$ (13.9)		$ (14.2)
Beginning balance - Shares at Sep. 30, 2014		622.9
Beginning balance at Sep. 30, 2014		$ 62.3	$ 0	11,625.6	13.9	$ (117.7)	11,584.1
Beginning balance at Sep. 30, 2014								$ 628.3
Beginning balance at Sep. 30, 2014	12,212.4
Stockholders' Equity [Roll Forward]
Net income	2,035.3			2,035.3			2,035.3
Nonredeemable noncontrolling interests	75.5
Net Income	2,110.8
Other comprehensive income (loss)	(196.5)					(196.5)	(196.5)
Cash dividends declared on common stock	(682.1)			(682.1)			(682.1)
Repurchase of common stock - Shares		(22.5)
Repurchase of common stock - Amount	(1,059.8)	$ (2.2)	(173.9)	(883.7)			(1,059.8)
Issuance of common stock - Shares		3.1
Issuance of common stock - Amount	154.8	$ 0.3	154.5				154.8
Tax benefit (shortfall) from stock-based compensation	10.9		10.9				10.9
Stock-based compensation	8.5		8.5				8.5
Net (distributions) subscriptions and other	(49)							(49)
Ending balance - Shares at Sep. 30, 2015		603.5
Ending balance at Sep. 30, 2015		$ 60.4	0	12,094.8	0	(314.2)	11,841
Ending balance at Sep. 30, 2015								654.8
Ending balance at Sep. 30, 2015	12,495.8
Stockholders' Equity [Roll Forward]
Net income	1,726.7			1,726.7			1,726.7
Nonredeemable noncontrolling interests	29.4
Net Income	1,756.1
Other comprehensive income (loss)	(33.2)					(33.2)	(33.2)
Cash dividends declared on common stock	(420.7)			(420.7)			(420.7)
Repurchase of common stock - Shares		(36.6)
Repurchase of common stock - Amount	(1,324.3)	$ (3.7)	(146)	(1,174.6)			(1,324.3)
Issuance of common stock - Shares		3.4
Issuance of common stock - Amount	150.1	$ 0.3	149.8				150.1
Tax benefit (shortfall) from stock-based compensation	(5.9)		(5.9)				(5.9)
Stock-based compensation	2.1		2.1				2.1
Net (distributions) subscriptions and other	(91.8)							(91.8)
Ending balance - Shares at Sep. 30, 2016		570.3
Ending balance at Sep. 30, 2016	11,935.8	$ 57	0	12,226.2	0	(347.4)	11,935.8
Ending balance at Sep. 30, 2016	592.4							592.4
Ending balance at Sep. 30, 2016	12,528.2
Stockholders' Equity [Roll Forward]
Adoption of new accounting guidance | ASU 2015-02 [Member]	(325.9)						(1.3)
Net income	1,696.7			1,696.7			1,696.7
Nonredeemable noncontrolling interests	40
Net Income	1,736.7
Other comprehensive income (loss)	69.7					69.7	69.7
Cash dividends declared on common stock	(449.9)			(449.9)			(449.9)
Repurchase of common stock - Shares		(19.1)
Repurchase of common stock - Amount	(771.5)	$ (1.9)	(140.1)	(629.5)			(771.5)
Issuance of common stock - Shares		3.7
Issuance of common stock - Amount	134.6	$ 0.4	134.2				134.6
Tax benefit (shortfall) from stock-based compensation	(8.7)		(8.7)				(8.7)
Stock-based compensation	14.6		14.6				14.6
Net (distributions) subscriptions and other	17.3							17.3
Deconsolidation of sponsored investment product	(9.3)							(9.3)
Ending balance - Shares at Sep. 30, 2017		554.9
Ending balance at Sep. 30, 2017	12,620	$ 55.5	$ 0	$ 12,849.3	$ 0	$ (284.8)	$ 12,620
Ending balance at Sep. 30, 2017	315.8							$ 315.8
Ending balance at Sep. 30, 2017	$ 12,935.8

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Net cash provided by operating activities
Net Income	$ 1,789.7	$ 1,757.7	$ 2,104.7
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of deferred sales commissions	72	75.2	112.8
Depreciation and other amortization	80.3	87.1	97.4
Impairment of intangible assets	9.6	28.2	8.2
Stock-based compensation	123.4	131.5	140
Excess tax benefit from stock-based compensation	(0.9)	(0.8)	(11)
Gains on sale of assets	(6.8)	(29.7)	(31.6)
Losses (income) from investments in equity method investees	(107.9)	(56.7)	63.2
Net losses (gains) on other investments of consolidated sponsored investment products	(55.4)	19.7	(28.9)
Other	(8)	15.1	3.1
Changes in operating assets and liabilities:
Decrease (increase) in receivables, prepaid expenses and other	(161)	(10.8)	45.2
Decrease in trading securities, net	130.2	120.4	23.3
Increase in trading securities of consolidated sponsored investment products, net	(875)	(242.3)	(181.1)
Increase (decrease) in accrued compensation and benefits	37.2	(76.7)	(16.7)
Increase (decrease) in commissions payable	11.3	(57.9)	(80.4)
Increase (decrease) in income taxes payable	44.5	(14)	20
Increase (decrease) in other liabilities	52.2	(18.3)	(16.2)
Net cash provided by operating activities	1,135.4	1,727.7	2,252
Net cash provided by investing activities
Purchase of investments	(372.5)	(367.8)	(297.2)
Liquidation of investments	344.9	405.2	405.5
Purchase of other investments by consolidated sponsored investment products	(114.7)	(333.3)	(438.9)
Liquidation of other investments by consolidated sponsored investment products	368.1	597.3	643.9
Additions of property and equipment, net	(74.9)	(97.6)	(68.8)
Adoption of new accounting guidance	(49.2)	0	0
Acquisition of business	(14)	0	0
Net (deconsolidation) consolidation of sponsored investment products	(35.7)	(11.6)	4.4
Net cash provided by investing activities	52	192.2	248.9
Net cash used in financing activities
Decrease in deposits	0	0	(0.3)
Issuance of common stock	24.9	24.1	25.5
Dividends paid on common stock	(441.2)	(408.7)	(666.4)
Repurchase of common stock	(765.3)	(1,308)	(1,059.8)
Excess tax benefit from stock-based compensation	0.9	0.8	11
Proceeds from loan	0	93.4	0
Payments on loan	(53.7)	(41.2)	0
Proceeds from issuance of debt	0	0	395.7
Payments on debt	(300)	0	(250)
Proceeds from debt of consolidated sponsored investment products	20.6	33.8	571.8
Payments on debt by consolidated sponsored investment products	(308.5)	(179.8)	(732.2)
Payments on contingent consideration liabilities	(35.3)	(3.2)	(7.9)
Noncontrolling interests	901.6	(11.9)	100.4
Net cash used in financing activities	(956)	(1,800.7)	(1,612.2)
Effect of exchange rate changes on cash and cash equivalents	35	(4)	(116.6)
Increase in cash and cash equivalents	266.4	115.2	772.1
Cash and cash equivalents, beginning of year	8,483.3	8,368.1	7,596
Cash and Cash Equivalents, End of Year	8,749.7	8,483.3	8,368.1
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	712.2	758.6	925
Cash paid for interest	42.3	47.4	44.6
Cash paid for interest by consolidated sponsored investment products	$ 11.2	$ 28.3	$ 33

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Business. Franklin Resources, Inc. (“Franklin”) is a holding company that, together with its various subsidiaries (collectively, the “Company”) is referred to as Franklin Templeton Investments. The Company provides investment management and related services to investors globally through products that include investment funds and institutional, high net-worth and separately-managed accounts (collectively, the “sponsored investment products” or “SIPs”). In addition to investment management, the Company ’ s services include fund administration, sales, distribution, marketing, shareholder servicing, and trust, custody and other services. Basis of Presentation. The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America, which require the use of estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. Management believes that the accounting estimates are appropriate and the resulting balances are reasonable; however, due to the inherent uncertainties in making estimates, actual amounts may differ from these estimates. Certain comparative amounts for prior fiscal years have been reclassified to conform to the financial statement presentation as of and for the fiscal year ended September 30, 2017 (“fiscal year 2017 ”). Consolidation. The consolidated financial statements include the accounts of Franklin and its subsidiaries and SIPs in which it has a controlling financial interest. The Company has a controlling financial interest when it owns a majority of the voting interest in a voting interest entity (“VOE”) or is the primary beneficiary of a variable interest entity (“VIE”). All material intercompany accounts and transactions have been eliminated. A VIE is an entity in which the equity investment holders have not contributed sufficient capital to finance its activities or do not have defined rights and obligations normally associated with an equity investment. The Company ’ s VIEs are all investment entities, and its variable interests consist of its equity ownership interests in and certain investment management fees earned from these entities. The Company is the primary beneficiary of a VIE if it has the power to direct the activities that most significantly impact the VIE ’ s economic performance and the obligation to absorb losses of or right to receive benefits from the VIE that could potentially be significant to the VIE. Investment management fees earned from VIEs are excluded from the primary beneficiary determination if they are deemed to be at market and commensurate with service. The key estimates and assumptions used in the analyses include the amount of assets under management (“AUM”) and the life of the investment product. Related Parties include the investment funds sponsored by the Company as a result of the Company ’ s advisory relationship and equity method investees. A substantial amount of the Company ’ s operating revenues and receivables are from related parties. Earnings per Share . Basic and diluted earnings per share are computed using the two-class method, which considers participating securities as a separate class of shares. The Company ’ s participating securities consist of its nonvested stock and stock unit awards that contain nonforfeitable rights to dividends or dividend equivalents. Basic earnings per share is computed by dividing net income available to the Company ’ s common shareholders, adjusted to exclude earnings allocated to participating securities, by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period. Fair Value Measurements. The Company uses a three-level fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value based on whether the inputs to those valuation techniques are observable or unobservable. The three levels of fair value hierarchy are set forth below. The Company ’ s assessment of the hierarchy level of the assets or liabilities measured at fair value is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Transfers between levels are recognized at the end of each quarter. Level 1 Unadjusted quoted prices in active markets for identical assets or liabilities, which may include published net asset values (“NAV”) for fund products. Level 2 Observable inputs other than Level 1 quoted prices, such as non-binding quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs other than quoted prices that are observable or corroborated by observable market data. Level 2 quoted prices are generally obtained from two independent third-party brokers or dealers, including prices derived from model-based valuation techniques for which the significant assumptions are observable in the market or corroborated by observable market data. Quoted prices are validated through price variance analysis, subsequent sales testing, stale price review, price comparison across pricing vendors and due diligence reviews of third-party vendors. Level 3 Unobservable inputs that are supported by little or no market activity. These inputs require significant management judgment and reflect the Company's estimation of assumptions that market participants would use in pricing the asset or liability. Quoted market prices may be adjusted if events occur, such as significant price changes in U.S.-traded market proxies after the close of corresponding foreign markets, trade halts or suspensions, or unscheduled market closures. The market proxies consist of correlated country-specific exchange-traded securities, such as futures, American Depositary Receipts indices or exchange-traded funds. The price adjustments are primarily determined based on third-party factors derived from model-based valuation techniques for which the significant assumptions are observable in the market. The fair values for Level 3 assets and liabilities are determined using various methodologies in accordance with the Company ’ s global valuation and pricing policy which defines valuation and pricing conventions for each security type. The Company may employ a market-based method, using purchase multiples observed for comparable third-party transactions, valuations of comparable entities, projected operating results of the investee entity or subsequent financing transactions entered into by the investee entity. If the inputs for a market-based method are not available, the Company utilizes an income-based method, which considers the net present value of anticipated future cash flows of the investment. A discount may be applied due to the nature or duration of any restrictions on the disposition of the investment. The Company reviews and approves the market-based and income-based methods on a periodic basis for changes that would impact the unobservable inputs incorporated into the valuation process. The fair value measurements from these methods are further validated through price variance analysis, subsequent sales testing and market comparable sales. The Company records a substantial amount of its investments at fair value or amounts that approximate fair value on a recurring basis. Investments in fund products for which fair value is estimated using NAV as a practical expedient (when the NAV is available to the Company as an investor but is not publicly available) are not classified in the fair value hierarchy. The financial assets and financial liabilities of consolidated collateralized loan obligations (“CLOs”) at September 30, 2016 were measured using the more observable fair value of either the financial assets or financial liabilities. Fair values are estimated for disclosure purposes for financial instruments that are not measured at fair value. Cash and Cash Equivalents primarily consist of debt instruments with original maturities of three months or less at the purchase date, nonconsolidated SIP money market funds, time deposits with maturities of three months or less, and deposits with financial institutions. Cash and cash equivalents are carried at cost, except for debt instruments which are carried at amortized cost. Due to the short-term nature and liquidity of these financial instruments, the carrying values of these assets approximate fair value. The Company maintains cash and cash equivalents with financial institutions in various countries, limits the amount of credit exposure with any given financial institution and conducts ongoing evaluations of the creditworthiness of the financial institutions with which it does business. Receivables consist primarily of fees receivable from SIPs and are carried at invoiced amounts. Due to the short-term nature and liquidity of the receivables, the carrying values of these assets approximate fair value. Investments consist of investment securities, trading and available-for-sale, investments in equity method investees and other investments. Investment Securities, Trading consist of corporate debt securities, nonconsolidated SIPs and other debt and equity securities, and are carried at fair value. Changes in the fair value of trading securities are recognized as gains and losses in earnings. The fair value of the corporate debt securities is determined using market pricing. The fair values of all SIPs and certain other equity securities are determined based on their published NAV. The fair values of certain other debt and equity securities are determined using independent third-party broker or dealer price quotes. The fair value of certain other debt securities is determined based on discounted cash flows using significant unobservable inputs. Investment Securities, Available-for-Sale consist primarily of nonconsolidated SIPs and to a lesser extent, debt and other equity securities, and are carried at fair value. Realized gains and losses are included in investment income using the average cost method. Unrealized gains and losses are recorded net of tax as part of accumulated other comprehensive income (loss) until realized. The fair value of the SIPs is determined based on their published NAV. The fair value of the debt securities is primarily determined using independent third-party broker or dealer price quotes. The fair value of other equity securities is determined using quoted market prices. Investments in Equity Method Investees consist of equity investments in entities, including SIPs, over which the Company is able to exercise significant influence, but not control. Significant influence is generally considered to exist when the Company ’ s ownership interest in the investee is between 20% and 50%, although other factors, such as representation on the investee ’ s board of directors and the impact of commercial arrangements, also are considered in determining whether the equity method of accounting is appropriate. Investments in limited partnerships and limited liability companies are accounted for using the equity method when the Company ’ s investment is more than minor or when the Company is the general partner. Under the equity method of accounting, the investments are initially carried at cost and subsequently adjusted by the Company ’ s proportionate share of the entities ’ net income, which is recognized in earnings. Other Investments consist of equity investments in entities over which the Company is unable to exercise significant influence and are not marketable, time deposits with maturities greater than three months from the date of purchase, and life settlement contracts. The equity investments are accounted for under the cost method and their fair value is generally estimated using NAV as a practical expedient. The time deposits are carried at cost, which approximates fair value due to their short-term nature and liquidity. Life settlement contracts are carried at fair value, which is determined based on discounted cash flows using significant unobservable inputs. Impairment of Investments. Investments other than trading securities are evaluated for other-than-temporary impairment on a quarterly basis when the cost of an investment exceeds its fair value. The evaluation of equity securities includes the severity and duration of the decline in the fair value below cost, the Company ’ s intent and ability to hold the security for a period of time sufficient for an anticipated recovery in fair value, and the financial condition and specific events related to the issuer. When an impairment of an equity security is determined to be other-than-temporary, the impairment is recognized in earnings. Cash and Cash Equivalents of Consolidated SIPs consist of deposits with financial institutions and highly liquid investments, including money market funds, which are readily convertible into cash, and are carried at cost. Due to the short-term nature and liquidity of these financial instruments, their carrying values approximate fair value. At September 30, 2016, cash and cash equivalents of consolidated SIPs also included investments in a money market fund held by consolidated CLOs which were carried at fair value based on the fund ’ s published NAV. Receivables of Consolidated SIPs consist of trades pending settlement and other investment and share transaction related receivables and are carried at transacted amounts. Due to the short-term nature and liquidity of the receivables, the carrying values of these assets approximate fair value. Investments of Consolidated SIPs consist of trading securities and other investments that are not generally traded in active markets, and are carried at fair value. Changes in the fair value of the investments are recognized as gains and losses in earnings. The fair value of the trading securities is determined using quoted market prices, or independent third-party broker or dealer price quotes if quoted market prices are not available. The investments that are not generally traded in active markets consist of debt and equity securities of entities in emerging markets and fund products. The fair values of the debt and equity securities are determined using significant unobservable inputs in either a market-based or income-based approach. The fair value of the fund products is determined using NAV as a practical expedient. At September 30, 2016, investments of consolidated SIPs also included corporate debt securities held by consolidated CLOs for which the fair value was primarily obtained from independent third-party broker or dealer price quotes. Property and Equipment, net are recorded at cost and depreciated using the straight-line method over their estimated useful lives which range from three to 35 years. Expenditures for repairs and maintenance are charged to expense when incurred. Leasehold improvements are amortized using the straight-line method over their estimated useful lives or the lease term, whichever is shorter. Internal and external costs incurred in connection with developing or obtaining software for internal use are capitalized and amortized over the shorter of the estimated useful lives of the software or the license terms, beginning when the software project is complete and the application is put into production. Property and equipment is tested for impairment when there is an indication that the carrying value of an asset may not be recoverable. Carrying values are not recoverable when the undiscounted cash flows estimated to be generated by the assets are less than their carrying values. When an asset is determined to not be recoverable, the impairment is measured based on the excess, if any, of the carrying value of the asset over its respective fair value. Fair value is determined by discounted future cash flows models, appraisals or other applicable methods. Goodwill and Other Intangible Assets, net . Goodwill represents the excess cost of a business acquisition over the fair value of the net assets acquired. Other intangible assets consist of investment management contracts resulting from business acquisitions. These intangible assets are amortized over their estimated useful lives, which range from five to 15 years, using the straight-line method, unless the asset is determined to have an indefinite useful life. Indefinite-lived intangible assets represent contracts to manage investment assets for which there is no foreseeable limit on the contract period. Goodwill and indefinite-lived intangible assets are tested for impairment annually as of August 1 and when an event occurs or circumstances change that more likely than not reduce the fair value of the related reporting unit or indefinite-lived intangible asset below its carrying value. The Company has one reporting unit, investment management and related services, consistent with its single operating segment, to which all goodwill has been assigned. Goodwill and indefinite-lived intangible assets may first be assessed for qualitative factors to determine whether it is necessary to perform a quantitative impairment test. The qualitative analysis considers entity-specific and macroeconomic factors and their potential impact on the key assumptions used in the determination of the fair value of the reporting unit or indefinite-lived intangible asset. A quantitative impairment test is performed if the results of the qualitative assessment indicate that it is more likely than not that the fair value of the reporting unit is less than its carrying value or an indefinite-lived intangible asset is impaired, or if a qualitative assessment is not performed. The quantitative goodwill impairment test involves a two-step process. The first step compares the fair value of the reporting unit to its carrying value. If the carrying value is less than the fair value, no impairment exists and the second step is not performed. If the carrying value is higher than the fair value, there is an indication that impairment may exist and the second step is performed to compute the amount of any impairment. In the second step, impairment is computed by comparing the implied fair value of the reporting unit goodwill with the carrying value of the goodwill. The quantitative indefinite-lived intangible assets impairment test compares the fair value of the asset to its carrying value. If the carrying value is higher than the fair value, impairment is recognized in the amount of the difference in values. In estimating the fair value of the reporting unit and indefinite-lived intangible assets, the Company uses an income approach under which future cash flows are discounted. The future cash flow estimates include assumptions about the AUM growth rate, pre-tax profit margin, average effective fee rate, effective tax rate and discount rate, which is based on the Company ’ s weighted average cost of capital. Definite-lived intangible assets are tested for impairment quarterly. Impairment is indicated when the carrying value of the asset is not recoverable and exceeds its fair value. In evaluating the recoverability of definite-lived intangible assets, the Company estimates the undiscounted future cash flows to be derived from these assets. The future undiscounted cash flow projections include assumptions about AUM growth and effective fee rates, investor redemptions, the pre-tax profit margin, and expected useful lives. If the carrying value of an asset is not recoverable through the related undiscounted cash flows, the impairment is measured based on the amount by which the carrying value of the asset exceeds its fair value, as determined by discounted cash flows or other methods as appropriate for the asset type. Impairment is recognized in general, administrative and other expense. Deferred Sales Commissions consist of up-front commissions paid to financial advisers and broker-dealers on shares sold without a front-end sales charge to investors, and are amortized over the periods in which they are generally recovered from related revenues, which range from one to seven years. Deferred sales commissions are included in other assets in the consolidated balance sheet. Debt consists of senior notes which are carried at amortized cost. At September 30, 2016, debt also included a loan. The fair values are estimated using quoted market prices, independent third-party broker or dealer price quotes, or prices of publicly traded debt with similar maturities, credit risk and interest rates. Debt of Consolidated SIPs is carried at amortized cost. The fair value is estimated using a discounted cash flow model that considers current interest rate levels, the quality of the underlying collateral and current economic conditions. At September 30, 2016, debt of consolidated SIPs also included debt of consolidated CLOs which was measured based on the fair value of the assets of the CLOs less the fair value of the Company’s own economic interests in the CLOs. Contingent Consideration Liability consists of the expected future payments related to the Company’s commitment to acquire the remaining interests in K2 Advisors Holdings, LLC (“K2”) and is included in other liabilities in the consolidated balance sheet. The liability is carried at fair value, determined using an income-based method which considers the net present value of anticipated future cash flows based on estimated future revenue and profits and timing of payments. Noncontrolling Interests relate almost entirely to consolidated SIPs. Noncontrolling interests that are currently redeemable or convertible for cash or other assets at the option of the holder are classified as temporary equity. Nonredeemable noncontrolling interests are classified as a component of equity. Net income (loss) attributable to third-party investors is reflected as net income (loss) attributable to nonredeemable and redeemable noncontrolling interests in the consolidated statements of income. Sales and redemptions of shares of consolidated SIPs by third-party investors are a component of the change in noncontrolling interests included in financing activities in the consolidated statements of cash flows. Revenues . Fees from providing investment management and fund administration services (“investment management fees”), distribution fees and shareholder servicing fees are recognized as earned, over the period in which services are rendered, except for performance-based investment management fees, which are recognized when earned. Sales commissions related to the sale of shares of SIPs are recognized on trade date. Investment management fees, other than performance-based fees, and distribution fees are determined based on a percentage of AUM, primarily on a monthly basis using average daily AUM. Performance-based investment management fees are based on performance targets established in the related investment management contracts. Shareholder servicing fees are generally calculated based on the number and type of accounts serviced. AUM is generally based on the fair value of the underlying securities held by SIPs and is calculated using fair value methods derived primarily from unadjusted quoted market prices, unadjusted independent third-party broker or dealer price quotes in active markets, or market prices or price quotes adjusted for observable price movements after the close of the primary market. The fair values of the underlying securities for which market prices are not readily available are internally valued using various methodologies which incorporate significant unobservable inputs as appropriate for each security type and represent an insignificant percentage of total AUM. Pricing of the securities held by SIPs is governed by the Company ’ s global valuation and pricing policy, which defines valuation and pricing conventions for each security type, including practices for responding to unexpected or unusual market events. Sales commissions and distribution fees are recorded gross of sales and distribution expenses paid to financial advisers and other intermediaries as the Company acts as the principal in its role as primary obligor to the sales and distribution agreements. Stock-Based Compensation. The fair value of share-based payment awards is estimated on the date of grant based on the market price of the underlying shares of the Company ’ s common stock and is amortized to compensation expense on a straight-line basis over the related vesting period, which is generally three years. Expense relating to awards subject to performance conditions is recognized if it is probable that the performance goals will be achieved. The probability of achievement is assessed on a quarterly basis. The total number of awards expected to vest is adjusted for estimated forfeitures. Postretirement Benefits . Defined contribution plan costs are expensed as incurred. Income Taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and the reported amounts in the consolidated financial statements using the statutory tax rates in effect for the year when the reported amount of the asset or liability is expected to be recovered or settled, respectively. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income tax expense in the period that includes the enactment date. A valuation allowance is recorded to reduce the carrying values of deferred tax assets to the amount that is more likely than not to be realized. For each tax position taken or expected to be taken in a tax return, the Company determines whether it is more likely than not that the position will be sustained upon examination based on the technical merits of the position, including resolution of any related appeals or litigation. A tax position that meets the more likely than not recognition threshold is measured to determine the amount of benefit to recognize. The tax position is measured at the largest amount of benefit that is greater than 50% likely of being realized upon settlement. The Company recognizes the accrual of interest on uncertain tax positions in interest expense and penalties in other operating expenses. As a multinational corporation, the Company operates in various locations outside the United States and generates earnings from its non-U.S. subsidiaries. The Company indefinitely reinvests the undistributed earnings of all its non-U.S. subsidiaries, except for income previously taxed in the U.S. or subject to regulatory or legal repatriation restrictions or requirements. Foreign Currency Translation and Transactions. Assets and liabilities of non-U.S. subsidiaries for which the local currency is the functional currency are translated at current exchange rates as of the end of the accounting period. The related revenues and expenses are translated at average exchange rates in effect during the period. Net exchange gains and losses resulting from translation are excluded from income and are recorded as part of accumulated other comprehensive income (loss). Transactions denominated in a foreign currency are revalued at the current exchange rate at the transaction date and any related gains and losses are recognized in earnings.

New Accounting Guidance

New Accounting Guidance	12 Months Ended
	Sep. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Guidance	New Accounting Guidance Recently Adopted Accounting Guidance On October 1, 2016 , the Company adopted an amendment to the consolidation guidance issued by the Financial Accounting Standards Board (“FASB”) using the modified retrospective approach which did not require the restatement of prior-year periods. The amendment modifies the consolidation framework for certain investment entities and all limited partnerships. It also eliminates certain criteria used to determine whether fees paid to a decision maker are a variable interest and results in a lower consolidation threshold for VIEs. The adoption caused the consolidation of 24 SIPs that changed from VOEs to VIEs and three other SIPs that are VIEs. In addition, two CLOs for which the Company was previously the primary beneficiary and five limited partnerships were deconsolidated. The adoption resulted in net increases in total assets, redeemable noncontrolling interests and retained earnings of $180.9 million , $824.7 million and $5.8 million , and net decreases in total liabilities, nonredeemable noncontrolling interests and other equity of $317.9 million , $324.6 million and $7.1 million as of October 1, 2016 . Accounting Guidance Not Yet Adopted The FASB issued an amendment to the existing stock-based compensation guidance in March 2016. The amendment requires all income tax effects of stock-based awards to be recognized as income tax expense when the awards vest or settle and clarifies the classification of these transactions within the statement of cash flows. The amendment also provides an election to account for forfeitures as they occur, which the Company will make. The Company will adopt the amendment on October 1, 2017. The income tax effect and statement of cash flow changes will be adopted on a prospective basis, and the forfeitures change will be adopted using a modified retrospective basis which will not have a material impact on retained earnings. The Company expects the adoption to increase the volatility of income tax expense as a result of fluctuations in its stock price. The FASB issued new guidance in May 2014 that requires use of a single principles-based model for recognition of revenue from contracts with customers. The core principle of the model is that revenue is recognized upon the transfer of promised goods or services to customers in an amount that reflects the expected consideration to be received for the goods or services. The guidance also changes the accounting for certain contract costs and revises the criteria for determining if an entity is acting as a principal or agent in certain arrangements. The guidance is effective for the Company on October 1, 2018 and allows for either a full retrospective or modified approach at adoption. While the Company’s implementation efforts are ongoing, it does not expect adoption of the guidance to have a significant impact on the timing of recognition for the majority of its operating revenue. The Company is evaluating certain costs to determine if they should be capitalized or expensed based on the criteria in the guidance for costs to obtain or fulfill a contract. Additionally, it is assessing certain arrangements to determine whether it continues to act as a principal and present the related revenue gross of associated expenses. The overall impact upon adoption may differ based on further evaluation, issuance of additional interpretive guidance and other facts and circumstances identified during implementation. The Company has not yet determined its transition approach. The FASB issued an amendment to the existing financial instruments guidance in January 2016. The amendment requires substantially all equity investments in nonconsolidated entities to be measured at fair value with changes recognized in earnings, except for those accounted for using the equity method of accounting, which will impact all equity securities currently classified as available-for-sale. The amendment also provides an election to measure equity investments that do not have a readily determinable fair value at cost less impairment, if any, which the Company expects to take. The amendment is effective for the Company on October 1, 2018 and requires a cumulative effect adjustment to retained earnings at adoption. The Company does not expect the adoption to have a material impact on its consolidated financial statements; however, this could be affected by market volatility as well as additional facts and circumstances identified during implementation. The FASB issued new guidance for the accounting for leases in February 2016. The new guidance requires lessees to recognize assets and liabilities arising from substantially all leases. The guidance also requires an evaluation at the inception of a contract to determine whether the contract is or contains a lease. The guidance is effective for the Company on October 1, 2019 and requires a modified retrospective approach at adoption. The Company is currently evaluating the impact of adopting the guidance. The FASB issued new guidance for the accounting for credit losses in June 2016. The new guidance requires the application of a current expected credit loss model for financial assets measured at amortized cost and an allowance for credit loss model for available-for-sale debt securities. The guidance is effective for the Company on October 1, 2020 and requires a cumulative effect adjustment to retained earnings at adoption. The Company is currently evaluating the impact of adopting the guidance.

Earnings per Share

Earnings per Share	12 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share The components of basic and diluted earnings per share were as follows: (in millions, except per share data) for the fiscal years ended September 30, 2017 2016 2015 Net income attributable to Franklin Resources, Inc. $ 1,696.7 $ 1,726.7 $ 2,035.3 Less: allocation of earnings to participating nonvested stock and stock unit awards 12.4 10.9 12.0 Net Income Available to Common Stockholders $ 1,684.3 $ 1,715.8 $ 2,023.3 Weighted-average shares outstanding – basic 558.8 583.8 614.8 Dilutive effect of nonparticipating nonvested stock unit awards 0.3 — 0.1 Weighted-Average Shares Outstanding – Diluted 559.1 583.8 614.9 Earnings per Share Basic $ 3.01 $ 2.94 $ 3.29 Diluted 3.01 2.94 3.29 Nonparticipating nonvested stock unit awards excluded from the calculation of diluted earnings per share because their effect would have been antidilutive were 0.7 million for fiscal year 2017 , 1.3 million for the fiscal year ended September 30, 2016 (“fiscal year 2016 ”), and 0.9 million for the fiscal year ended September 30, 2015 (“fiscal year 2015 ”).

Investments

Investments	12 Months Ended
	Sep. 30, 2017
Investments [Abstract]
Investments	Investments The disclosures below include details of the Company’s investments, excluding those of consolidated SIPs. See Note 9 – Consolidated Sponsored Investment Products for information related to the investments held by these entities. Investments consisted of the following: (in millions) as of September 30, 2017 2016 Investment securities, trading SIPs $ 31.1 $ 844.4 Debt and other equity securities 283.4 277.5 Total investment securities, trading 314.5 1,121.9 Investment securities, available-for-sale SIPs 110.8 297.7 Debt and other equity securities 1.9 3.7 Total investment securities, available-for-sale 112.7 301.4 Investments in equity method investees 893.5 797.4 Other investments 72.9 195.9 Total $ 1,393.6 $ 2,416.6 Debt and other equity trading securities consist primarily of corporate debt. Investment securities with aggregate carrying amounts of $0.8 million and $117.3 million were pledged as collateral at September 30, 2017 and 2016 . Gross unrealized gains and losses relating to investment securities, available-for-sale were as follows: Gross Unrealized (in millions) Cost Basis Gains Losses Fair Value as of September 30, 2017 SIPs $ 107.9 $ 9.4 $ (6.5 ) $ 110.8 Debt and other equity securities 1.9 — — 1.9 Total $ 109.8 $ 9.4 $ (6.5 ) $ 112.7 as of September 30, 2016 SIPs $ 289.6 $ 13.7 $ (5.6 ) $ 297.7 Debt and other equity securities 3.6 0.1 — 3.7 Total $ 293.2 $ 13.8 $ (5.6 ) $ 301.4 Gross unrealized losses relating to investment securities, available-for-sale aggregated by length of time that individual securities have been in a continuous unrealized loss position were as follows: Less Than 12 Months 12 Months or Greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) as of September 30, 2017 SIPs $ 28.4 $ (6.3 ) $ 2.4 $ (0.2 ) $ 30.8 $ (6.5 ) as of September 30, 2016 SIPs $ 75.8 $ (4.3 ) $ 18.0 $ (1.3 ) $ 93.8 $ (5.6 ) The Company recognized $0.8 million , $11.1 million and $10.0 million of other-than-temporary impairment during fiscal years 2017 , 2016 and 2015 , of which $5.8 million and $8.2 million in fiscal years 2016 and 2015 related to available-for-sale SIPs.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The disclosures below include details of the Company’s fair value measurements, excluding those of consolidated SIPs. See Note 9 – Consolidated Sponsored Investment Products for information related to fair value measurements of the assets and liabilities of these entities. The assets and liability measured at fair value on a recurring basis were as follows: (in millions) Level 1 Level 2 Level 3 Total as of September 30, 2017 Assets Investment securities, trading SIPs $ 31.1 $ — $ — $ 31.1 Debt and other equity securities 18.2 78.4 186.8 283.4 Investment securities, available-for-sale SIPs 110.8 — — 110.8 Debt and other equity securities 1.0 0.6 0.3 1.9 Life settlement contracts — — 12.8 12.8 Total Assets Measured at Fair Value $ 161.1 $ 79.0 $ 199.9 $ 440.0 Liability Contingent consideration liability $ — $ — $ 51.0 $ 51.0 (in millions) Level 1 Level 2 Level 3 Total as of September 30, 2016 Assets Investment securities, trading SIPs $ 844.4 $ — $ — $ 844.4 Debt and other equity securities 2.6 84.1 190.8 277.5 Investment securities, available-for-sale SIPs 297.7 — — 297.7 Debt and other equity securities 1.6 2.1 — 3.7 Life settlement contracts — — 14.3 14.3 Total Assets Measured at Fair Value $ 1,146.3 $ 86.2 $ 205.1 $ 1,437.6 Liability Contingent consideration liability $ — $ — $ 98.1 $ 98.1 There were no transfers between Level 1 and Level 2, or into Level 3, during fiscal years 2017 and 2016 . Changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: 2017 2016 (in millions) Investments Contingent Consideration Liabilities Investments Contingent Consideration Liability for the fiscal years ended September 30, Balance at beginning of year $ 205.1 $ (98.1 ) $ 20.7 $ (102.9 ) Acquisition — (5.7 ) — — Total realized and unrealized gains (losses) Included in investment and other income, net 8.5 — (2.4 ) — Included in general, administrative and other expense — 13.8 — 1.0 Purchases 5.4 — 190.4 — Sales (17.7 ) — (4.0 ) — Settlements (4.8 ) 39.0 (2.8 ) 3.8 Transfers out of Level 3 (0.4 ) — — — Foreign exchange revaluation 3.8 — 3.2 — Balance at End of Year $ 199.9 $ (51.0 ) $ 205.1 $ (98.1 ) Change in unrealized gains (losses) included in net income relating to assets and liability held at end of year $ 6.0 $ 8.1 $ (4.0 ) $ 1.0 Valuation techniques and significant unobservable inputs used in recurring Level 3 fair value measurements were as follows: (in millions) as of September 30, 2017 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Investment securities, trading – debt and other equity securities $ 175.7 Market pricing Redemption price $73 per $100 of par Discount rate 18.6% 11.1 Discounted cash flow Discount rate 4.1%–6.7% (5.7%) Risk premium 2.0%–4.1% (2.9%) Life settlement contracts 12.8 Discounted cash flow Life expectancy 20–123 months (62) Discount rate 8.0%–20.0% (13.2%) Contingent consideration liability 51.0 Discounted cash flow AUM growth rate 1.3%–9.4% (5.3%) EBITDA margin 8.5%–8.9% (8.7%) Discount rate 14.6% (in millions) as of September 30, 2016 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Investment securities, trading - debt and other equity securities $ 190.8 Discounted cash flow Discount rate 3.6%–6.9% (6.7%) Risk premium 2.0%–17.9% (16.5%) Liquidity discount 0.0%–10.0% (9.6%) Life settlement contracts 14.3 Discounted cash flow Life expectancy 20–132 months (65) Discount rate 3.3%–18.0% (11.5%) Contingent consideration liability 98.1 Discounted cash flow AUM growth rate 2.4%–11.5% (5.9%) EBITDA margin 14.3% Discount rate 13.2% For investment securities, trading - debt and other equity securities using the market pricing technique, a significant increase (decrease) in the redemption price in isolation would result in a significantly higher (lower) fair value measurement, while a significant increase (decrease) in the discount rate in isolation would result in a significantly lower (higher) fair value measurement. For investment securities, trading - debt and other equity securities using the discounted cash flow technique, a significant increase (decrease) in the discount rate, risk premium or liquidity discount in isolation would result in a significantly lower (higher) fair value measurement. For life settlement contracts, a significant increase (decrease) in the life expectancy or the discount rate in isolation would result in a significantly lower (higher) fair value measurement. For the contingent consideration liability, a significant increase (decrease) in the AUM growth rate or EBITDA margin, or decrease (increase) in the discount rate, in isolation would result in a significantly higher (lower) fair value measurement. Financial instruments that were not measured at fair value were as follows: (in millions) 2017 2016 as of September 30, Fair Value Level Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial Assets Cash and cash equivalents 1 $ 8,523.3 $ 8,523.3 $ 8,247.1 $ 8,247.1 Other investments Time deposits 2 13.4 13.4 131.6 131.6 Cost method investments 3 46.7 67.7 50.0 61.3 Financial Liabilities Debt Senior notes 2 $ 1,044.2 $ 1,073.5 $ 1,348.5 $ 1,412.5 Loan 2 — — 52.7 52.7

Property and Equipment

Property and Equipment	12 Months Ended
	Sep. 30, 2017
Property, Plant and Equipment, Net [Abstract]
Property and Equipment	Property and Equipment Property and equipment, net consisted of the following: (in millions) Useful Lives In Years as of September 30, 2017 2016 Furniture, software and equipment $ 804.7 $ 756.4 3 – 10 Premises and leasehold improvements 580.9 563.5 5 – 35 Land 74.2 74.1 N/A Total cost 1,459.8 1,394.0 Less: accumulated depreciation and amortization (942.6 ) (870.8 ) Property and Equipment, Net $ 517.2 $ 523.2 Depreciation and amortization expense related to property and equipment was $81.5 million , $81.0 million and $81.6 million in fiscal years 2017 , 2016 and 2015 . The Company recognized insignificant impairment of equipment during each year.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill and other intangible assets, net consisted of the following: (in millions) as of September 30, 2017 2016 Goodwill $ 1,687.2 $ 1,661.2 Indefinite-lived intangible assets 534.0 530.9 Definite-lived intangible assets, net 6.5 19.2 Goodwill and Other Intangible Assets, Net $ 2,227.7 $ 2,211.3 Changes in the carrying value of goodwill were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 Balance at beginning of year $ 1,661.2 $ 1,661.2 Acquisition 18.8 — Foreign exchange revaluation 7.2 — Balance at End of Year $ 1,687.2 $ 1,661.2 Indefinite-lived intangible assets consist of management contracts. No impairment of goodwill or indefinite-lived intangible assets was recognized during fiscal years 2017 , 2016 and 2015 . Definite-lived intangible assets were as follows: 2017 2016 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value as of September 30, Management contracts $ 52.4 $ (45.9 ) $ 6.5 $ 60.1 $ (40.9 ) $ 19.2 Amortization expense related to definite-lived intangible assets was $3.9 million , $10.4 million and $20.1 million for fiscal years 2017 , 2016 and 2015 . The Company recognized impairment of management contract definite-lived intangible assets of $9.6 million , $28.2 million and $8.2 million during fiscal years 2017 , 2016 and 2015 . The impairments were primarily related to the K2 acquisition and resulted from increased investor redemptions, as well as lower estimates of future sales and renegotiations of certain investment management fees in fiscal year 2016. Definite-lived intangible assets had a weighted-average remaining useful life of 8.8 years at September 30, 2017 , with estimated remaining amortization expense as follows: (in millions) for the fiscal years ending September 30, Amount 2018 $ 1.0 2019 0.8 2020 0.8 2021 0.7 2022 0.5 Thereafter 2.7 Total $ 6.5

Debt

Debt	12 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Debt	Debt The disclosures below include details of the Company’s debt, excluding that of consolidated SIPs. See Note 9 – Consolidated Sponsored Investment Products for information related to the debt of these entities. Debt consisted of the following: (in millions) 2017 Effective Interest Rate 2016 Effective Interest Rate as of September 30, Senior Notes $300 million 1.375% notes due September 2017 $ — N/A $ 299.7 1.66 % $350 million 4.625% notes due May 2020 349.9 4.74 % 349.9 4.74 % $300 million 2.800% notes due September 2022 299.6 2.93 % 299.5 2.93 % $400 million 2.850% notes due March 2025 399.5 2.97 % 399.4 2.97 % Total senior notes 1,049.0 1,348.5 Other Loan due March 2017 — N/A 52.7 9.89 % Debt issuance costs (4.8 ) — Total $ 1,044.2 $ 1,401.2 At September 30, 2017 , the Company’s outstanding senior unsecured unsubordinated notes had an aggregate face value of $1.1 billion . The notes have fixed interest rates with interest payable semi-annually and contain an optional redemption feature that allows the Company to redeem each series of notes prior to maturity in whole or in part at any time, at a make-whole redemption price. The indentures governing the notes contain limitations on the Company’s ability and the ability of its subsidiaries to pledge voting stock or profit participating equity interests in its subsidiaries to secure other debt without similarly securing the notes equally and ratably. The indentures also include requirements that must be met if the Company consolidates or merges with, or sells all or substantially all of its assets to, another entity. At September 30, 2016, other debt consisted of the outstanding balance of a loan originated in March 2016 for 6.3 billion Indian Rupees ( $93.4 million ) at a fixed interest rate of 9.89% to purchase certain securities from SIPs domiciled in India. The loan was secured by a standby letter of credit for 6.5 billion Indian Rupees ( $96.6 million ) collateralized by a $116.0 million time deposit. The loan agreement was amended in February 2017 with a revised maturity of March 2018, and the loan was fully paid in September 2017. The Company was in compliance with all debt covenants at September 30, 2017 . At September 30, 2017 , the Company had $500.0 million of short-term commercial paper available for issuance under an uncommitted private placement program which has been inactive since 2012 .

Consolidated Sponsored Investme

Consolidated Sponsored Investment Products	12 Months Ended
	Sep. 30, 2017
Consolidated Sponsored Investment Products [Abstract]
Consolidated Sponsored Investment Products	Consolidated Sponsored Investment Products The Company consolidates SIPs, which consist of both VOEs and VIEs, when it has a controlling financial interest. New accounting guidance adopted on October 1, 2016 modified the consolidation framework for certain investment entities and all limited partnerships. See Note 2 - New Accounting Guidance in these notes to consolidated financial statements. Consolidated SIPs consist of mutual and other investment funds, limited partnerships and similar structures and CLOs, which are asset-backed financing entities collateralized by a pool of corporate debt securities. The Company consolidated 58 SIPs, none of which are CLOs, as of September 30, 2017 and 40 SIPs, including three CLOs, as of September 30, 2016 . Amounts for prior periods have been reclassified to combine amounts previously presented separately as consolidated SIPs and consolidated VIEs. The balances of consolidated SIPs included in the Company’s consolidated balance sheets were as follows: (in millions) as of September 30, 2017 2016 Assets Cash and cash equivalents $ 226.4 $ 236.2 Receivables 234.1 47.9 Investments, at fair value 3,467.4 1,513.4 Other assets 0.9 1.4 Total Assets $ 3,928.8 $ 1,798.9 Liabilities Accounts payable and accrued expenses $ 124.1 $ 65.2 Debt 53.4 682.2 Other liabilities 8.7 8.5 Total liabilities 186.2 755.9 Redeemable Noncontrolling Interests 1,941.9 61.1 Stockholders ’ Equity Franklin Resources, Inc.’s interests 1,511.8 414.1 Nonredeemable noncontrolling interests 288.9 567.8 Total stockholders’ equity 1,800.7 981.9 Total Liabilities, Redeemable Noncontrolling Interests and Stockholders ’ Equity $ 3,928.8 $ 1,798.9 The consolidated SIPs did not have a significant impact on net income attributable to the Company in fiscal years 2017 , 2016 and 2015 . The Company has no right to the consolidated SIPs’ assets, other than its direct equity investments in them and investment management fees earned from them. The debt holders of the consolidated SIPs have no recourse to the Company’s assets beyond the level of its direct investment, therefore the Company bears no other risks associated with the SIPs’ liabilities. SIPs are typically consolidated when the Company makes an initial investment in a newly launched investment entity. They are typically deconsolidated when the Company no longer has a controlling financial interest due to redemptions of its investment or increases in third-party investments. The Company’s investments in SIPs subsequent to deconsolidation are accounted for as trading or available-for-sale investment securities, or equity method or cost method investments depending on the structure of the SIP and the Company’s role and level of ownership. Investments Investments of consolidated SIPs consisted of the following: (in millions) as of September 30, 2017 2016 Investment securities, trading $ 3,017.2 $ 287.8 Other equity securities 306.9 607.3 Other debt securities 143.3 618.3 Total $ 3,467.4 $ 1,513.4 Investment securities, trading consist of debt and equity securities that are traded in active markets. Other equity securities consist of equity securities of entities in emerging markets and fund products. Other debt securities consist of debt securities of entities in emerging markets and also included corporate debt securities held by CLOs at September 30, 2016. Investments in fund products for which fair value was estimated using NAV as a practical expedient were as follows: (in millions) as of September 30, Redemption Frequency 2017 2016 Real estate and private equity funds Nonredeemable $ 155.2 $ 444.2 Hedge funds Monthly, quarterly or triennially — 1.8 Total $ 155.2 $ 446.0 The investments in real estate and private equity funds are expected to be returned through distributions as a result of liquidations of the funds’ underlying assets over a weighted-average period of 4.4 years and 3.2 years at September 30, 2017 and 2016 . The consolidated SIPs’ unfunded commitments to these funds totaled $1.9 million and $74.4 million at September 30, 2017 and 2016 , of which the Company was contractually obligated to fund $0.4 million and $2.2 million based on its ownership percentage in the SIPs. Fair Value Measurements Assets and liabilities of consolidated SIPs measured at fair value on a recurring basis were as follows: (in millions) Level 1 Level 2 Level 3 NAV as a Practical Expedient Total as of September 30, 2017 Assets Investments Equity securities $ 331.4 $ 128.1 $ 160.7 $ 155.2 $ 775.4 Debt securities 1.4 2,555.2 135.4 — 2,692.0 Total Assets Measured at Fair Value $ 332.8 $ 2,683.3 $ 296.1 $ 155.2 $ 3,467.4 Liabilities Other liabilities $ 0.4 $ 8.3 $ — $ — $ 8.7 (in millions) Level 1 Level 2 Level 3 NAV as a Practical Expedient Total as of September 30, 2016 Assets Cash and cash equivalents of CLOs $ 146.4 $ — $ — $ — $ 146.4 Receivables of CLOs — 23.6 — — 23.6 Investments Equity securities 155.4 0.5 160.3 446.0 762.2 Debt securities — 618.9 132.3 — 751.2 Total Assets Measured at Fair Value $ 301.8 $ 643.0 $ 292.6 $ 446.0 $ 1,683.4 Liabilities Other liabilities $ 0.1 $ 8.4 $ — $ — $ 8.5 Receivables of CLOs consisted primarily of investment trades pending settlement. The fair value of the assets was obtained from independent third-party broker or dealer quotes. Other liabilities consist of short positions in debt and equity securities. The fair value of the liabilities is determined based on the fair value of the underlying securities using quoted market prices, or independent third-party broker or dealer price quotes if quoted market prices securities are not available. There were no transfers between Level 1 and Level 2, or into or out of Level 3, during fiscal years 2017 and 2016 . Changes in Level 3 assets measured at fair value on a recurring basis were as follows: 2017 2016 (in millions) Equity Securities Debt Securities Total Level 3 Assets Equity Securities Debt Securities Total Level 3 Assets for the fiscal years ended September 30, Balance at beginning of year $ 160.3 $ 132.3 $ 292.6 $ 191.6 $ 130.2 $ 321.8 Adoption of new accounting guidance (45.4 ) (0.5 ) (45.9 ) — — — Realized and unrealized gains (losses) included in investment and other income, net 19.2 (0.3 ) 18.9 1.2 (10.5 ) (9.3 ) Purchases 30.4 24.7 55.1 1.6 26.8 28.4 Sales (6.7 ) (22.3 ) (29.0 ) (34.0 ) (15.4 ) (49.4 ) Settlements — (0.6 ) (0.6 ) — — — Foreign exchange revaluation 2.9 2.1 5.0 (0.1 ) 1.2 1.1 Balance at End of Year $ 160.7 $ 135.4 $ 296.1 $ 160.3 $ 132.3 $ 292.6 Change in unrealized gains (losses) included in net income relating to assets held at end of year $ 29.4 $ (0.9 ) $ 28.5 $ (1.1 ) $ (10.9 ) $ (12.0 ) Valuation techniques and significant unobservable inputs used in recurring Level 3 fair value measurements were as follows: (in millions) as of September 30, 2017 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Equity securities $ 101.9 Market comparable companies EBITDA multiple 5.5–12.3 (9.0) 44.4 Discounted cash flow Discount rate 5.7%–17.9% (14.3%) 14.4 Market pricing Price to earnings ratio 10.0 Debt securities 112.7 Discounted cash flow Discount rate 5.0%–33.0% (9.5%) Risk premium 0.0%–25.0% (8.4%) 22.7 Market pricing Private sale pricing $33–$57 ($52) per $100 of par (in millions) as of September 30, 2016 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Equity securities $ 113.1 Market comparable companies EBITDA multiple 5.0–14.2 (10.3) Discount for lack of marketability 25.0%–50.0% (36.6%) 24.3 Discounted cash flow Discount rate 5.0%–19.0% (13.7%) 22.9 Market pricing Price to book value ratio 1.8–2.3 (2.0) Debt securities 119.7 Discounted cash flow Discount rate 6.0%–15.0% (10.4%) Risk premium 0.0%–28.0% (9.7%) EBITDA multiple 5.5 12.6 Market pricing Private sale pricing $57 per $100 of par Following are descriptions of the sensitivity of the Level 3 recurring fair value measurements to changes in the significant unobservable inputs presented in the above tables. For securities using the market comparable companies valuation technique, a significant increase (decrease) in the EBITDA multiple in isolation would result in a significantly higher (lower) fair value measurement. A significant increase (decrease) in the discount for lack of marketability in isolation would result in a significantly lower (higher) fair value measurement. The discount for lack of marketability used to determine fair value may include other factors such as liquidity or credit risk. For securities using the discounted cash flow valuation technique, a significant increase (decrease) in the discount rate or risk premium in isolation would result in a significantly lower (higher) fair value measurement. A significant increase (decrease) in the EBITDA multiple in isolation would result in a significantly higher (lower) fair value measurement. For securities using a market pricing valuation technique, a significant increase (decrease) in the price to earnings ratio, private sale pricing or price to book value ratio would result in a significantly higher (lower) fair value measurement. Financial instruments of consolidated SIPs that were not measured at fair value were as follows: (in millions) 2017 2016 as of September 30, Fair Value Level Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial Assets Cash and cash equivalents 1 $ 226.4 $ 226.4 $ 89.8 $ 89.8 Financial Liabilities Debt, excluding CLOs 3 $ 53.4 $ 53.1 $ 75.0 $ 74.6 Debt of CLOs 1 2 or 3 — — 607.2 594.5 _________________ 1 Substantially all was Level 2. Debt Debt of consolidated SIPs consisted of the following: 2017 2016 (in millions) Amount Weighted-Average Effective Interest Rate Amount Weighted-Average Effective Interest Rate as of September 30, Debt, excluding CLOs $ 53.4 5.15% $ 75.0 4.79% Debt of CLOs — N/A 607.2 2.24% Total $ 53.4 $ 682.2 Debt, excluding CLOs had fixed and floating interest rates ranging from 2.84% to 6.75% at September 30, 2017 , and from 2.36% to 6.19% at September 30, 2016 . At September 30, 2017 , maturities for debt of consolidated SIPs were as follows: (in millions) Carrying Amount for the fiscal years ending September 30, 2018 $ 5.8 2019 47.6 Total $ 53.4 Redeemable Noncontrolling Interests Changes in redeemable noncontrolling interests of consolidated SIPs were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Balance at beginning of year $ 61.1 $ 59.6 $ 234.8 Adoption of new accounting guidance 824.7 — — Net income (loss) 53.0 1.6 (6.1 ) Net subscriptions and other 884.3 79.9 149.4 Net consolidations (deconsolidations) 118.8 (80.0 ) (318.5 ) Balance at End of Year $ 1,941.9 $ 61.1 $ 59.6 Collateralized Loan Obligations During fiscal years 2017 and 2016 , the Company recognized $4.8 million and $6.2 million of net gains related to its own economic interests in consolidated CLOs.

Nonconsolidated Variable Intere

Nonconsolidated Variable Interest Entities	12 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nonconsolidated Variable Interest Entities	Nonconsolidated Variable Interest Entities VIEs for which the Company is not the primary beneficiary consist of SIPs and other investment products in which the Company has an equity ownership interest. The Company’s maximum exposure to loss from these VIEs consists of equity investments and investment management fee receivables as follows: (in millions) as of September 30, 2017 2016 Receivables $ 155.6 $ 21.4 Investments 129.3 77.3 Total $ 284.9 $ 98.7 While the Company has no contractual obligation to do so, it routinely makes cash investments in the course of launching SIPs. The Company also may voluntarily elect to provide its SIPs with additional direct or indirect financial support based on its business objectives. The Company did not provide financial or other support to its SIPs during fiscal year 2017 . During fiscal year 2016 , the Company purchased $182.7 million of certain debt securities from six SIPs domiciled in India in order to provide additional liquidity to the SIPs.

Taxes on Income

Taxes on Income	12 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Taxes on Income	Taxes on Income Taxes on income were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Current expense Federal $ 585.0 $ 582.8 $ 733.9 State 65.3 47.5 83.1 Non-U.S. 100.2 102.8 121.1 Deferred expense (benefit) 8.9 9.0 (14.4 ) Total $ 759.4 $ 742.1 $ 923.7 The tax benefit from the utilization of net operating loss carry-forwards was insignificant in fiscal years 2017 , 2016 and 2015 . The Company had tax shortfalls of $8.7 million and $5.9 million in fiscal years 2017 and 2016 associated with stock-based compensation plans, which increased the amount of income taxes that would have otherwise been payable, and a tax benefit of $10.9 million in fiscal year 2015 which reduced the amount of income taxes that would have otherwise been payable. The tax shortfalls and benefit are reflected as components of stockholders ’ equity. Income before taxes consisted of the following: (in millions) for the fiscal years ended September 30, 2017 2016 2015 U.S. $ 1,594.5 $ 1,641.7 $ 2,026.4 Non-U.S. 954.6 858.1 1,002.0 Total $ 2,549.1 $ 2,499.8 $ 3,028.4 The Company’s income in certain countries is subject to reduced tax rates due to tax rulings. The impact of the reduced rates on income tax expense was $28.8 million or $0.05 per diluted share for fiscal year 2017 , $34.2 million or $0.06 per diluted share for fiscal year 2016 , and $68.3 million or $0.11 per diluted share for fiscal year 2015 . The tax rulings will expire in fiscal years 2019 and 2022 . The significant components of deferred tax assets and deferred tax liabilities were as follows: (in millions) as of September 30, 2017 2016 Deferred Tax Assets Deferred compensation and employee benefits $ 60.2 $ 52.9 Stock-based compensation 36.1 36.6 Net operating loss carry-forwards 28.4 32.5 Tax benefit for uncertain tax positions 17.9 19.8 Other 23.9 12.5 Total deferred tax assets 166.5 154.3 Valuation allowance for net operating loss carry-forwards (25.2 ) (24.6 ) Deferred tax assets, net of valuation allowance 141.3 129.7 Deferred Tax Liabilities Goodwill and other purchased intangibles 205.2 202.8 Depreciation on fixed assets 35.3 18.0 Investments in partnerships 26.0 17.9 Deferred commissions 15.0 18.3 Other 14.6 16.5 Total deferred tax liabilities 296.1 273.5 Net Deferred Tax Liability $ 154.8 $ 143.8 Deferred income tax assets and liabilities that relate to the same tax jurisdiction are presented net on the consolidated balance sheets. The components of the net deferred tax liability were classified in the consolidated balance sheets as follows: (in millions) as of September 30, 2017 2016 Other assets $ 15.8 $ 17.7 Deferred tax liabilities 170.6 161.5 Net Deferred Tax Liability $ 154.8 $ 143.8 At September 30, 2017 , there were $131.4 million of non-U.S. net operating loss carry-forwards, $62.4 million of which expire between fiscal years 2019 and 2038 with the remaining carry-forwards having an indefinite life. In addition, there were $32.2 million in state net operating loss carry-forwards that expire between fiscal years 2020 and 2037 . A partial valuation allowance has been provided to offset the related deferred tax assets due to the uncertainty of realizing the benefit of the net operating loss carry-forwards. The valuation allowance increased $0.6 million in fiscal year 2017 and decreased $9.4 million in fiscal year 2016 . The Company has made no provision for U.S. income taxes on $9.0 billion of cumulative undistributed non-U.S. earnings that are indefinitely reinvested at September 30, 2017 . Determination of the potential amount of unrecognized deferred U.S. income tax liability related to such reinvested non-U.S. earnings is not practicable because of the numerous assumptions associated with this hypothetical calculation. However, foreign tax credits would be available to reduce some portion of this amount. Changes to the Company’s policy of reinvestment or repatriation of non-U.S. earnings may have a significant effect on its financial condition and results of operations. A reconciliation of the amount of tax expense at the federal statutory rate and taxes on income as reflected in the consolidated statements of income is as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Federal taxes at statutory rate $ 892.2 35.0 % $ 874.9 35.0 % $ 1,059.9 35.0 % State taxes, net of federal tax effect 41.4 1.6 % 42.7 1.7 % 51.6 1.7 % Effect of non-U.S. operations (146.2 ) (5.7 %) (153.0 ) (6.1 %) (148.5 ) (4.9 %) Effect of net income attributable to noncontrolling interests (32.6 ) (1.3 %) (10.9 ) (0.4 %) (24.3 ) (0.8 %) Other 4.6 0.2 % (11.6 ) (0.5 %) (15.0 ) (0.5 %) Tax Provision $ 759.4 29.8 % $ 742.1 29.7 % $ 923.7 30.5 % A reconciliation of the beginning and ending balances of gross unrecognized tax benefits is as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Balance at beginning of year $ 82.1 $ 105.2 $ 118.2 Additions for tax positions of prior years 6.6 0.6 12.6 Reductions for tax positions of prior years (1.3 ) (9.0 ) (3.4 ) Tax positions related to the current year 11.6 12.9 16.2 Settlements with taxing authorities (5.2 ) (5.4 ) (0.1 ) Expirations of statute of limitations (12.7 ) (22.2 ) (38.3 ) Balance at End of Year $ 81.1 $ 82.1 $ 105.2 If recognized, substantially all of the balance, net of any deferred tax benefits, would favorably affect the Company’s effective income tax rate in future periods. Accrued interest on uncertain tax positions at September 30, 2017 and 2016 was $10.4 million and $9.6 million , and is not presented in the unrecognized tax benefits table above. Interest expense (benefit) of $1.6 million , $(1.3) million and $(6.6) million was recognized during fiscal years 2017 , 2016 and 2015 . Accrued penalties at September 30, 2017 and 2016 were insignificant. The Company files a consolidated U.S. federal income tax return, multiple U.S. state and local income tax returns, and income tax returns in multiple non-U.S. jurisdictions. The Company is subject to examination by the taxing authorities in these jurisdictions. The Company’s major tax jurisdictions and the tax years for which the statutes of limitations have not expired are as follows: India 2003 to 2017; Canada 2010 to 2017; Hong Kong 2011 to 2017; Singapore 2012 to 2017; Luxembourg 2014 to 2017; the U.K. 2015 to 2017; U.S. federal 2014 to 2017; the States of California and Florida 2013 to 2017; the States of Massachusetts and New York, and City of New York 2014 to 2017; and the State of Minnesota 2015 to 2017. The Company has on-going examinations in various stages of completion in the States of California, Missouri and New York, and in Canada, Hong Kong, India and Switzerland. Examination outcomes and the timing of settlements are subject to significant uncertainty. Such settlements may involve some or all of the following: the payment of additional taxes, the adjustment of deferred taxes and/or the recognition of unrecognized tax benefits. The Company has recognized a tax benefit only for those positions that meet the more-likely-than-not recognition threshold. It is reasonably possible that the total unrecognized tax benefit as of September 30, 2017 could decrease by an estimated $12.6 million within the next twelve months as a result of the expiration of statutes of limitations in the U.S. federal and certain U.S. state and local and non-U.S. tax jurisdictions, and potential settlements with U.S. states and non-U.S. taxing authorities.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings On July 28, 2016, a former employee filed a class action lawsuit captioned Cryer v. Franklin Resources, Inc., et al. in the United States District Court for the Northern District of California against Franklin, the Franklin Templeton 401(k) Retirement Plan (“Plan”) Investment Committee (“Investment Committee”), and unnamed Investment Committee members. The plaintiff asserts a claim for breach of fiduciary duty under the Employee Retirement Income Security Act (“ERISA”), alleging that the defendants selected mutual funds sponsored and managed by the Company (the “Funds”) as investment options for the Plan when allegedly lower-cost and better performing non-proprietary investment vehicles were available. The plaintiff also claims that the total Plan costs, inclusive of investment management and administrative fees, are excessive. The plaintiff alleges that Plan losses exceed $79.0 million and seeks, among other things, damages, disgorgement, rescission of the Plan’s investments in the Funds, attorneys’ fees and costs, and pre- and post-judgment interest. On November 2, 2017, a second former employee, represented by the same law firm, filed another putative class action lawsuit relating to the Plan in the same court, captioned Fernandez v. Franklin Resources, Inc., et al. This second action names the same defendants as those named in the Cryer action, but also includes as defendants the Franklin Board of Directors, individual current and former Franklin directors, and individual current and former Investment Committee members. The plaintiff in this second lawsuit seeks to assert the same ERISA breach of fiduciary duty claim asserted in the Cryer action, as well as claims for alleged prohibited transactions by virtue of the Plan ’ s investments in the Funds and for an alleged failure to monitor the performance of the Investment Committee. The plaintiff alleges that Plan losses exceed $60.0 million and seeks the same relief sought in the Cryer action. Management strongly believes that the claims made in these lawsuits are without merit. Discovery is continuing in the Cryer action and the Fernandez action has not yet been served. Franklin will defend against both actions vigorously. Franklin cannot at this time predict the eventual outcome of the lawsuits or whether they will have a material negative impact on the Company, or reasonably estimate the possible loss or range of loss that may arise from any negative outcome. The Company is from time to time involved in other litigation relating to claims arising in the normal course of business. Management is of the opinion that the ultimate resolution of such claims will not materially affect the Company ’ s business, financial position, results of operations or liquidity. In management ’ s opinion, an adequate accrual has been made as of September 30, 2017 to provide for any probable losses that may arise from such matters for which the Company could reasonably estimate an amount. Other Commitments and Contingencies The Company leases office space and equipment under operating leases expiring at various dates through fiscal year 2032 . Lease expense was $56.3 million , $69.3 million and $58.0 million in fiscal years 2017 , 2016 and 2015 . Sublease income totaled $0.4 million , $1.6 million and $1.7 million in fiscal years 2017 , 2016 and 2015 . Future minimum lease payments under long-term non-cancelable operating leases were as follows as of September 30, 2017 : (in millions) for the fiscal years ending September 30, Amount 2018 $ 44.7 2019 41.1 2020 35.6 2021 31.4 2022 28.4 Thereafter 185.8 Total Minimum Lease Payments $ 367.0 Future minimum rentals to be received under non-cancelable subleases totaled $0.5 million at September 30, 2017 . While the Company has no contractual obligation to do so, it routinely makes cash investments in the course of launching SIPs. At September 30, 2017 , the Company had $73.5 million of committed capital contributions which relate to discretionary commitments to invest in SIPs and other investment products. These unfunded commitments are not recorded in the Company ’ s consolidated balance sheet.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Sep. 30, 2017
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company’s stock-based compensation plans consist of the Amended and Restated Annual Incentive Compensation Plan (the “AIP”), the 2002 Universal Stock Incentive Plan, as amended and restated (the “USIP”) and the amended and restated Franklin Resources, Inc. 1998 Employee Stock Investment Plan (the “ESIP”). The Compensation Committee of the Board of Directors determines the terms and conditions of awards under the AIP, the USIP and the ESIP. Stock-based compensation expenses were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Stock and stock unit awards $ 117.0 $ 125.3 $ 133.6 Employee stock investment plan 6.4 6.2 6.4 Total $ 123.4 $ 131.5 $ 140.0 Stock and Stock Unit Awards Under the terms of the AIP, eligible employees may receive cash, equity awards and/or mutual fund unit awards generally based on the performance of the Company, its funds and the individual employee. The USIP provides for the issuance of the Company’s common stock for various stock-related awards to officers, directors and employees. There are 120.0 million shares authorized under the USIP, of which 21.0 million shares were available for grant at September 30, 2017 . Stock awards generally entitle holders to the right to sell the underlying shares of the Company’s common stock once the awards vest. Stock unit awards generally entitle holders to receive the underlying shares of common stock once the awards vest. Awards generally vest based on the passage of time or the achievement of predetermined Company financial performance goals. In the event a performance measure is not achieved at or above a specified threshold level, the portion of the award tied to such performance measure is forfeited. Stock and stock unit award activity was as follows: (shares in thousands) Time-Based Shares Performance-Based Shares Total Shares Weighted-Average Grant-Date Fair Value for the fiscal year ended September 30, 2017 Nonvested balance at September 30, 2016 2,369 1,288 3,657 $ 45.67 Granted 2,739 1,124 3,863 34.23 Vested (2,082 ) (355 ) (2,437 ) 43.90 Forfeited/canceled (243 ) (296 ) (539 ) 42.86 Nonvested Balance at September 30, 2017 2,783 1,761 4,544 $ 37.23 Total unrecognized compensation expense related to nonvested stock and stock unit awards, net of estimated forfeitures, was $118.9 million at September 30, 2017 . This expense is expected to be recognized over a remaining weighted-average vesting period of 1.6 years . The weighted-average grant-date fair values of stock awards and stock unit awards granted during fiscal years 2017 , 2016 and 2015 were $34.23 , $40.88 and $55.65 per share. The total fair value of stock and stock unit awards vested during the same periods was $104.0 million , $92.8 million and $115.2 million . The Company generally does not repurchase shares upon vesting of stock and stock unit awards. However, in order to pay taxes due in connection with the vesting of employee and executive officer stock and stock unit awards, shares are repurchased using a net stock issuance method. Employee Stock Investment Plan The ESIP allows eligible participants to buy shares of the Company’s common stock at a discount of its market value on defined dates. A total of 0.8 million shares were issued under the ESIP during fiscal year 2017 , and 3.6 million shares were reserved for future issuance at September 30, 2017 .

Defined Contribution Plans

Defined Contribution Plans	12 Months Ended
	Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Defined Contribution Plans	Defined Contribution Plans The Company sponsors a 401(k) plan that covers substantially all U.S. employees who meet certain employment requirements. Participants may contribute up to 50% of pretax annual compensation and up to 100% of the cash portion of the participant ’ s year-end bonus, as defined by the plan and subject to Internal Revenue Code limitations, each year to the plan. In addition, certain of the Company ’ s non-U.S. subsidiaries sponsor defined contribution plans primarily for the purpose of providing deferred compensation incentives for employees and to comply with local regulatory requirements. The total expenses recognized for defined contribution plans were $45.5 million , $46.8 million and $46.4 million for fiscal years 2017 , 2016 and 2015 .

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Sep. 30, 2017
Segment Reporting, Measurement Disclosures [Abstract]
Segment and Geographic Information	Segment and Geographic Information The Company has one operating segment, investment management and related services. Geographic information was as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Operating Revenues United States $ 3,898.4 $ 4,063.6 $ 4,634.2 Luxembourg 1,652.8 1,707.9 2,278.6 Asia-Pacific 281.0 267.9 311.8 Canada 260.8 273.8 339.0 The Bahamas 205.9 204.6 250.2 Europe, the Middle East and Africa, excluding Luxembourg 83.2 94.0 126.8 Latin America 10.1 6.2 8.1 Total $ 6,392.2 $ 6,618.0 $ 7,948.7 (in millions) as of September 30, 2017 2016 2015 Property and Equipment, Net United States $ 426.1 $ 428.0 $ 406.9 Asia-Pacific 60.2 62.9 68.9 The Bahamas 13.4 14.3 14.6 Europe, the Middle East and Africa 12.2 14.9 14.8 Canada 5.3 3.1 4.5 Latin America — — 0.4 Total $ 517.2 $ 523.2 $ 510.1 Operating revenues are generally allocated to geographic areas based on the location of the subsidiary providing services.

Other Income (Expenses)

Other Income (Expenses)	12 Months Ended
	Sep. 30, 2017
Other Income and Expenses [Abstract]
Other Income (Expenses)	Other Income (Expenses) Other income (expenses) consisted of the following: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Investment and Other Income, Net Dividend income $ 13.9 $ 20.6 $ 10.3 Interest income 74.9 36.5 10.8 Gains (losses) on trading investment securities, net 12.2 50.1 (22.3 ) Realized gains on sale of investment securities, available-for-sale 5.6 32.1 28.1 Realized losses on sale of investment securities, available-for-sale (1.6 ) (3.2 ) (4.0 ) Income (losses) from investments in equity method investees 107.9 56.7 (63.2 ) Other-than-temporary impairment of investments (0.8 ) (11.1 ) (10.0 ) Gains (losses) on investments of consolidated SIPs, net 118.2 (13.5 ) 18.0 Foreign currency exchange gains (losses), net (16.0 ) (2.9 ) 57.0 Other, net 22.0 18.7 15.7 Total 336.3 184.0 40.4 Interest Expense (51.5 ) (49.9 ) (39.6 ) Other Income, Net $ 284.8 $ 134.1 $ 0.8 Substantially all of the Company’s dividend income and realized gains and losses on sale of available-for-sale securities were generated by investments in its nonconsolidated SIPs. Interest income was primarily generated by cash equivalents and trading investment securities. Proceeds from the sale of available-for-sale securities were $51.6 million , $269.4 million and $221.3 million for fiscal years 2017 , 2016 and 2015 . Net gains (losses) recognized on the Company ’ s trading investment securities that were held at September 30, 2017 , 2016 and 2015 were $5.0 million , $27.9 million and $(20.3) million . Net gains (losses) recognized on trading investment securities of consolidated SIPs that were held at September 30, 2017 , 2016 and 2015 were $21.9 million , $9.4 million and $(17.7) million .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) by component were as follows: (in millions) Unrealized Gains on Investments Currency Translation Adjustments Unrealized Losses on Total for the fiscal year ended September 30, 2017 Balance at October 1, 2016 $ 6.8 $ (346.1 ) $ (8.1 ) $ (347.4 ) Adoption of new accounting guidance (6.8 ) (0.3 ) — (7.1 ) Other comprehensive income Other comprehensive income before reclassifications, net of tax 6.5 65.4 2.1 74.0 Reclassifications to net investment and other income, net of tax (4.3 ) — — (4.3 ) Total other comprehensive income 2.2 65.4 2.1 69.7 Balance at September 30, 2017 $ 2.2 $ (281.0 ) $ (6.0 ) $ (284.8 ) (in millions) Unrealized Gains on Investments Currency Translation Adjustments Unrealized Losses on Defined Benefit Plans Total for the fiscal year ended September 30, 2016 Balance at October 1, 2015 $ 19.3 $ (327.8 ) $ (5.7 ) $ (314.2 ) Other comprehensive loss Other comprehensive income (loss) before reclassifications, net of tax 2.7 (18.3 ) (2.4 ) (18.0 ) Reclassifications to net investment and other income, net of tax (15.2 ) — — (15.2 ) Total other comprehensive loss (12.5 ) (18.3 ) (2.4 ) (33.2 ) Balance at September 30, 2016 $ 6.8 $ (346.1 ) $ (8.1 ) $ (347.4 )

Significant Accounting Polici25

Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Business	Business. Franklin Resources, Inc. (“Franklin”) is a holding company that, together with its various subsidiaries (collectively, the “Company”) is referred to as Franklin Templeton Investments. The Company provides investment management and related services to investors globally through products that include investment funds and institutional, high net-worth and separately-managed accounts (collectively, the “sponsored investment products” or “SIPs”). In addition to investment management, the Company ’ s services include fund administration, sales, distribution, marketing, shareholder servicing, and trust, custody and other services.
Basis of Presentation	Basis of Presentation. The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America, which require the use of estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. Management believes that the accounting estimates are appropriate and the resulting balances are reasonable; however, due to the inherent uncertainties in making estimates, actual amounts may differ from these estimates. Certain comparative amounts for prior fiscal years have been reclassified to conform to the financial statement presentation as of and for the fiscal year ended September 30, 2017 (“fiscal year 2017 ”).
Consolidation	Consolidation. The consolidated financial statements include the accounts of Franklin and its subsidiaries and SIPs in which it has a controlling financial interest. The Company has a controlling financial interest when it owns a majority of the voting interest in a voting interest entity (“VOE”) or is the primary beneficiary of a variable interest entity (“VIE”). All material intercompany accounts and transactions have been eliminated. A VIE is an entity in which the equity investment holders have not contributed sufficient capital to finance its activities or do not have defined rights and obligations normally associated with an equity investment. The Company ’ s VIEs are all investment entities, and its variable interests consist of its equity ownership interests in and certain investment management fees earned from these entities. The Company is the primary beneficiary of a VIE if it has the power to direct the activities that most significantly impact the VIE ’ s economic performance and the obligation to absorb losses of or right to receive benefits from the VIE that could potentially be significant to the VIE. Investment management fees earned from VIEs are excluded from the primary beneficiary determination if they are deemed to be at market and commensurate with service. The key estimates and assumptions used in the analyses include the amount of assets under management (“AUM”) and the life of the investment product.
Related Parties	Related Parties include the investment funds sponsored by the Company as a result of the Company ’ s advisory relationship and equity method investees. A substantial amount of the Company ’ s operating revenues and receivables are from related parties.
Earnings per Share	Earnings per Share . Basic and diluted earnings per share are computed using the two-class method, which considers participating securities as a separate class of shares. The Company ’ s participating securities consist of its nonvested stock and stock unit awards that contain nonforfeitable rights to dividends or dividend equivalents. Basic earnings per share is computed by dividing net income available to the Company ’ s common shareholders, adjusted to exclude earnings allocated to participating securities, by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period.
Fair Value Measurements	Fair Value Measurements. The Company uses a three-level fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value based on whether the inputs to those valuation techniques are observable or unobservable. The three levels of fair value hierarchy are set forth below. The Company ’ s assessment of the hierarchy level of the assets or liabilities measured at fair value is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Transfers between levels are recognized at the end of each quarter. Level 1 Unadjusted quoted prices in active markets for identical assets or liabilities, which may include published net asset values (“NAV”) for fund products. Level 2 Observable inputs other than Level 1 quoted prices, such as non-binding quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs other than quoted prices that are observable or corroborated by observable market data. Level 2 quoted prices are generally obtained from two independent third-party brokers or dealers, including prices derived from model-based valuation techniques for which the significant assumptions are observable in the market or corroborated by observable market data. Quoted prices are validated through price variance analysis, subsequent sales testing, stale price review, price comparison across pricing vendors and due diligence reviews of third-party vendors. Level 3 Unobservable inputs that are supported by little or no market activity. These inputs require significant management judgment and reflect the Company's estimation of assumptions that market participants would use in pricing the asset or liability. Quoted market prices may be adjusted if events occur, such as significant price changes in U.S.-traded market proxies after the close of corresponding foreign markets, trade halts or suspensions, or unscheduled market closures. The market proxies consist of correlated country-specific exchange-traded securities, such as futures, American Depositary Receipts indices or exchange-traded funds. The price adjustments are primarily determined based on third-party factors derived from model-based valuation techniques for which the significant assumptions are observable in the market. The fair values for Level 3 assets and liabilities are determined using various methodologies in accordance with the Company ’ s global valuation and pricing policy which defines valuation and pricing conventions for each security type. The Company may employ a market-based method, using purchase multiples observed for comparable third-party transactions, valuations of comparable entities, projected operating results of the investee entity or subsequent financing transactions entered into by the investee entity. If the inputs for a market-based method are not available, the Company utilizes an income-based method, which considers the net present value of anticipated future cash flows of the investment. A discount may be applied due to the nature or duration of any restrictions on the disposition of the investment. The Company reviews and approves the market-based and income-based methods on a periodic basis for changes that would impact the unobservable inputs incorporated into the valuation process. The fair value measurements from these methods are further validated through price variance analysis, subsequent sales testing and market comparable sales. The Company records a substantial amount of its investments at fair value or amounts that approximate fair value on a recurring basis. Investments in fund products for which fair value is estimated using NAV as a practical expedient (when the NAV is available to the Company as an investor but is not publicly available) are not classified in the fair value hierarchy. The financial assets and financial liabilities of consolidated collateralized loan obligations (“CLOs”) at September 30, 2016 were measured using the more observable fair value of either the financial assets or financial liabilities. Fair values are estimated for disclosure purposes for financial instruments that are not measured at fair value.
Cash and Cash Equivalents	Cash and Cash Equivalents primarily consist of debt instruments with original maturities of three months or less at the purchase date, nonconsolidated SIP money market funds, time deposits with maturities of three months or less, and deposits with financial institutions. Cash and cash equivalents are carried at cost, except for debt instruments which are carried at amortized cost. Due to the short-term nature and liquidity of these financial instruments, the carrying values of these assets approximate fair value. The Company maintains cash and cash equivalents with financial institutions in various countries, limits the amount of credit exposure with any given financial institution and conducts ongoing evaluations of the creditworthiness of the financial institutions with which it does business.
Receivables	Receivables consist primarily of fees receivable from SIPs and are carried at invoiced amounts. Due to the short-term nature and liquidity of the receivables, the carrying values of these assets approximate fair value.
Investments	Investments consist of investment securities, trading and available-for-sale, investments in equity method investees and other investments. Investment Securities, Trading consist of corporate debt securities, nonconsolidated SIPs and other debt and equity securities, and are carried at fair value. Changes in the fair value of trading securities are recognized as gains and losses in earnings. The fair value of the corporate debt securities is determined using market pricing. The fair values of all SIPs and certain other equity securities are determined based on their published NAV. The fair values of certain other debt and equity securities are determined using independent third-party broker or dealer price quotes. The fair value of certain other debt securities is determined based on discounted cash flows using significant unobservable inputs. Investment Securities, Available-for-Sale consist primarily of nonconsolidated SIPs and to a lesser extent, debt and other equity securities, and are carried at fair value. Realized gains and losses are included in investment income using the average cost method. Unrealized gains and losses are recorded net of tax as part of accumulated other comprehensive income (loss) until realized. The fair value of the SIPs is determined based on their published NAV. The fair value of the debt securities is primarily determined using independent third-party broker or dealer price quotes. The fair value of other equity securities is determined using quoted market prices. Investments in Equity Method Investees consist of equity investments in entities, including SIPs, over which the Company is able to exercise significant influence, but not control. Significant influence is generally considered to exist when the Company ’ s ownership interest in the investee is between 20% and 50%, although other factors, such as representation on the investee ’ s board of directors and the impact of commercial arrangements, also are considered in determining whether the equity method of accounting is appropriate. Investments in limited partnerships and limited liability companies are accounted for using the equity method when the Company ’ s investment is more than minor or when the Company is the general partner. Under the equity method of accounting, the investments are initially carried at cost and subsequently adjusted by the Company ’ s proportionate share of the entities ’ net income, which is recognized in earnings. Other Investments consist of equity investments in entities over which the Company is unable to exercise significant influence and are not marketable, time deposits with maturities greater than three months from the date of purchase, and life settlement contracts. The equity investments are accounted for under the cost method and their fair value is generally estimated using NAV as a practical expedient. The time deposits are carried at cost, which approximates fair value due to their short-term nature and liquidity. Life settlement contracts are carried at fair value, which is determined based on discounted cash flows using significant unobservable inputs. Impairment of Investments. Investments other than trading securities are evaluated for other-than-temporary impairment on a quarterly basis when the cost of an investment exceeds its fair value. The evaluation of equity securities includes the severity and duration of the decline in the fair value below cost, the Company ’ s intent and ability to hold the security for a period of time sufficient for an anticipated recovery in fair value, and the financial condition and specific events related to the issuer. When an impairment of an equity security is determined to be other-than-temporary, the impairment is recognized in earnings.
Cash and Cash Equivalents of Consolidated SIPs	Cash and Cash Equivalents of Consolidated SIPs consist of deposits with financial institutions and highly liquid investments, including money market funds, which are readily convertible into cash, and are carried at cost. Due to the short-term nature and liquidity of these financial instruments, their carrying values approximate fair value. At September 30, 2016, cash and cash equivalents of consolidated SIPs also included investments in a money market fund held by consolidated CLOs which were carried at fair value based on the fund ’ s published NAV.
Receivables of Consolidated SIPs	Receivables of Consolidated SIPs consist of trades pending settlement and other investment and share transaction related receivables and are carried at transacted amounts. Due to the short-term nature and liquidity of the receivables, the carrying values of these assets approximate fair value.
Investments of Consolidated SIPs	Investments of Consolidated SIPs consist of trading securities and other investments that are not generally traded in active markets, and are carried at fair value. Changes in the fair value of the investments are recognized as gains and losses in earnings. The fair value of the trading securities is determined using quoted market prices, or independent third-party broker or dealer price quotes if quoted market prices are not available. The investments that are not generally traded in active markets consist of debt and equity securities of entities in emerging markets and fund products. The fair values of the debt and equity securities are determined using significant unobservable inputs in either a market-based or income-based approach. The fair value of the fund products is determined using NAV as a practical expedient. At September 30, 2016, investments of consolidated SIPs also included corporate debt securities held by consolidated CLOs for which the fair value was primarily obtained from independent third-party broker or dealer price quotes.
Property and Equipment, net	Property and Equipment, net are recorded at cost and depreciated using the straight-line method over their estimated useful lives which range from three to 35 years. Expenditures for repairs and maintenance are charged to expense when incurred. Leasehold improvements are amortized using the straight-line method over their estimated useful lives or the lease term, whichever is shorter. Internal and external costs incurred in connection with developing or obtaining software for internal use are capitalized and amortized over the shorter of the estimated useful lives of the software or the license terms, beginning when the software project is complete and the application is put into production. Property and equipment is tested for impairment when there is an indication that the carrying value of an asset may not be recoverable. Carrying values are not recoverable when the undiscounted cash flows estimated to be generated by the assets are less than their carrying values. When an asset is determined to not be recoverable, the impairment is measured based on the excess, if any, of the carrying value of the asset over its respective fair value. Fair value is determined by discounted future cash flows models, appraisals or other applicable methods.
Goodwill and Other Intangible Assets, net	Goodwill and Other Intangible Assets, net . Goodwill represents the excess cost of a business acquisition over the fair value of the net assets acquired. Other intangible assets consist of investment management contracts resulting from business acquisitions. These intangible assets are amortized over their estimated useful lives, which range from five to 15 years, using the straight-line method, unless the asset is determined to have an indefinite useful life. Indefinite-lived intangible assets represent contracts to manage investment assets for which there is no foreseeable limit on the contract period. Goodwill and indefinite-lived intangible assets are tested for impairment annually as of August 1 and when an event occurs or circumstances change that more likely than not reduce the fair value of the related reporting unit or indefinite-lived intangible asset below its carrying value. The Company has one reporting unit, investment management and related services, consistent with its single operating segment, to which all goodwill has been assigned. Goodwill and indefinite-lived intangible assets may first be assessed for qualitative factors to determine whether it is necessary to perform a quantitative impairment test. The qualitative analysis considers entity-specific and macroeconomic factors and their potential impact on the key assumptions used in the determination of the fair value of the reporting unit or indefinite-lived intangible asset. A quantitative impairment test is performed if the results of the qualitative assessment indicate that it is more likely than not that the fair value of the reporting unit is less than its carrying value or an indefinite-lived intangible asset is impaired, or if a qualitative assessment is not performed. The quantitative goodwill impairment test involves a two-step process. The first step compares the fair value of the reporting unit to its carrying value. If the carrying value is less than the fair value, no impairment exists and the second step is not performed. If the carrying value is higher than the fair value, there is an indication that impairment may exist and the second step is performed to compute the amount of any impairment. In the second step, impairment is computed by comparing the implied fair value of the reporting unit goodwill with the carrying value of the goodwill. The quantitative indefinite-lived intangible assets impairment test compares the fair value of the asset to its carrying value. If the carrying value is higher than the fair value, impairment is recognized in the amount of the difference in values. In estimating the fair value of the reporting unit and indefinite-lived intangible assets, the Company uses an income approach under which future cash flows are discounted. The future cash flow estimates include assumptions about the AUM growth rate, pre-tax profit margin, average effective fee rate, effective tax rate and discount rate, which is based on the Company ’ s weighted average cost of capital. Definite-lived intangible assets are tested for impairment quarterly. Impairment is indicated when the carrying value of the asset is not recoverable and exceeds its fair value. In evaluating the recoverability of definite-lived intangible assets, the Company estimates the undiscounted future cash flows to be derived from these assets. The future undiscounted cash flow projections include assumptions about AUM growth and effective fee rates, investor redemptions, the pre-tax profit margin, and expected useful lives. If the carrying value of an asset is not recoverable through the related undiscounted cash flows, the impairment is measured based on the amount by which the carrying value of the asset exceeds its fair value, as determined by discounted cash flows or other methods as appropriate for the asset type. Impairment is recognized in general, administrative and other expense.
Deferred Sales Commissions	Deferred Sales Commissions consist of up-front commissions paid to financial advisers and broker-dealers on shares sold without a front-end sales charge to investors, and are amortized over the periods in which they are generally recovered from related revenues, which range from one to seven years. Deferred sales commissions are included in other assets in the consolidated balance sheet.
Debt	Debt consists of senior notes which are carried at amortized cost. At September 30, 2016, debt also included a loan. The fair values are estimated using quoted market prices, independent third-party broker or dealer price quotes, or prices of publicly traded debt with similar maturities, credit risk and interest rates.
Debt of Consolidated SIPs	Debt of Consolidated SIPs is carried at amortized cost. The fair value is estimated using a discounted cash flow model that considers current interest rate levels, the quality of the underlying collateral and current economic conditions. At September 30, 2016, debt of consolidated SIPs also included debt of consolidated CLOs which was measured based on the fair value of the assets of the CLOs less the fair value of the Company’s own economic interests in the CLOs.
Contingent Consideration Liability	Contingent Consideration Liability consists of the expected future payments related to the Company’s commitment to acquire the remaining interests in K2 Advisors Holdings, LLC (“K2”) and is included in other liabilities in the consolidated balance sheet. The liability is carried at fair value, determined using an income-based method which considers the net present value of anticipated future cash flows based on estimated future revenue and profits and timing of payments.
Noncontrolling Interests	Noncontrolling Interests relate almost entirely to consolidated SIPs. Noncontrolling interests that are currently redeemable or convertible for cash or other assets at the option of the holder are classified as temporary equity. Nonredeemable noncontrolling interests are classified as a component of equity. Net income (loss) attributable to third-party investors is reflected as net income (loss) attributable to nonredeemable and redeemable noncontrolling interests in the consolidated statements of income. Sales and redemptions of shares of consolidated SIPs by third-party investors are a component of the change in noncontrolling interests included in financing activities in the consolidated statements of cash flows.
Revenues	Revenues . Fees from providing investment management and fund administration services (“investment management fees”), distribution fees and shareholder servicing fees are recognized as earned, over the period in which services are rendered, except for performance-based investment management fees, which are recognized when earned. Sales commissions related to the sale of shares of SIPs are recognized on trade date. Investment management fees, other than performance-based fees, and distribution fees are determined based on a percentage of AUM, primarily on a monthly basis using average daily AUM. Performance-based investment management fees are based on performance targets established in the related investment management contracts. Shareholder servicing fees are generally calculated based on the number and type of accounts serviced. AUM is generally based on the fair value of the underlying securities held by SIPs and is calculated using fair value methods derived primarily from unadjusted quoted market prices, unadjusted independent third-party broker or dealer price quotes in active markets, or market prices or price quotes adjusted for observable price movements after the close of the primary market. The fair values of the underlying securities for which market prices are not readily available are internally valued using various methodologies which incorporate significant unobservable inputs as appropriate for each security type and represent an insignificant percentage of total AUM. Pricing of the securities held by SIPs is governed by the Company ’ s global valuation and pricing policy, which defines valuation and pricing conventions for each security type, including practices for responding to unexpected or unusual market events. Sales commissions and distribution fees are recorded gross of sales and distribution expenses paid to financial advisers and other intermediaries as the Company acts as the principal in its role as primary obligor to the sales and distribution agreements.
Stock-Based Compensation	Stock-Based Compensation. The fair value of share-based payment awards is estimated on the date of grant based on the market price of the underlying shares of the Company ’ s common stock and is amortized to compensation expense on a straight-line basis over the related vesting period, which is generally three years. Expense relating to awards subject to performance conditions is recognized if it is probable that the performance goals will be achieved. The probability of achievement is assessed on a quarterly basis. The total number of awards expected to vest is adjusted for estimated forfeitures.
Postretirement Benefits	Postretirement Benefits . Defined contribution plan costs are expensed as incurred.
Income Taxes	Income Taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and the reported amounts in the consolidated financial statements using the statutory tax rates in effect for the year when the reported amount of the asset or liability is expected to be recovered or settled, respectively. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income tax expense in the period that includes the enactment date. A valuation allowance is recorded to reduce the carrying values of deferred tax assets to the amount that is more likely than not to be realized. For each tax position taken or expected to be taken in a tax return, the Company determines whether it is more likely than not that the position will be sustained upon examination based on the technical merits of the position, including resolution of any related appeals or litigation. A tax position that meets the more likely than not recognition threshold is measured to determine the amount of benefit to recognize. The tax position is measured at the largest amount of benefit that is greater than 50% likely of being realized upon settlement. The Company recognizes the accrual of interest on uncertain tax positions in interest expense and penalties in other operating expenses. As a multinational corporation, the Company operates in various locations outside the United States and generates earnings from its non-U.S. subsidiaries. The Company indefinitely reinvests the undistributed earnings of all its non-U.S. subsidiaries, except for income previously taxed in the U.S. or subject to regulatory or legal repatriation restrictions or requirements.
Foreign Currency Translation and Transactions	Foreign Currency Translation and Transactions. Assets and liabilities of non-U.S. subsidiaries for which the local currency is the functional currency are translated at current exchange rates as of the end of the accounting period. The related revenues and expenses are translated at average exchange rates in effect during the period. Net exchange gains and losses resulting from translation are excluded from income and are recorded as part of accumulated other comprehensive income (loss). Transactions denominated in a foreign currency are revalued at the current exchange rate at the transaction date and any related gains and losses are recognized in earnings.
Other Assets and Liabilities of Consolidated VIEs	Receivables of CLOs consisted primarily of investment trades pending settlement. The fair value of the assets was obtained from independent third-party broker or dealer quotes.
Other Liabilities of Consolidated SIPs	Other liabilities consist of short positions in debt and equity securities. The fair value of the liabilities is determined based on the fair value of the underlying securities using quoted market prices, or independent third-party broker or dealer price quotes if quoted market prices securities are not available.

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Components of basic and diluted earnings per share	The components of basic and diluted earnings per share were as follows: (in millions, except per share data) for the fiscal years ended September 30, 2017 2016 2015 Net income attributable to Franklin Resources, Inc. $ 1,696.7 $ 1,726.7 $ 2,035.3 Less: allocation of earnings to participating nonvested stock and stock unit awards 12.4 10.9 12.0 Net Income Available to Common Stockholders $ 1,684.3 $ 1,715.8 $ 2,023.3 Weighted-average shares outstanding – basic 558.8 583.8 614.8 Dilutive effect of nonparticipating nonvested stock unit awards 0.3 — 0.1 Weighted-Average Shares Outstanding – Diluted 559.1 583.8 614.9 Earnings per Share Basic $ 3.01 $ 2.94 $ 3.29 Diluted 3.01 2.94 3.29

Investments (Tables)

Investments (Tables)	12 Months Ended
	Sep. 30, 2017
Investments [Abstract]
Summary of investments	Investments consisted of the following: (in millions) as of September 30, 2017 2016 Investment securities, trading SIPs $ 31.1 $ 844.4 Debt and other equity securities 283.4 277.5 Total investment securities, trading 314.5 1,121.9 Investment securities, available-for-sale SIPs 110.8 297.7 Debt and other equity securities 1.9 3.7 Total investment securities, available-for-sale 112.7 301.4 Investments in equity method investees 893.5 797.4 Other investments 72.9 195.9 Total $ 1,393.6 $ 2,416.6
Summary of the gross unrealized gains and losses relating to investment securities, available-for-sale	Gross unrealized gains and losses relating to investment securities, available-for-sale were as follows: Gross Unrealized (in millions) Cost Basis Gains Losses Fair Value as of September 30, 2017 SIPs $ 107.9 $ 9.4 $ (6.5 ) $ 110.8 Debt and other equity securities 1.9 — — 1.9 Total $ 109.8 $ 9.4 $ (6.5 ) $ 112.7 as of September 30, 2016 SIPs $ 289.6 $ 13.7 $ (5.6 ) $ 297.7 Debt and other equity securities 3.6 0.1 — 3.7 Total $ 293.2 $ 13.8 $ (5.6 ) $ 301.4
Summary of gross unrealized losses and fair values of investment securities in a continuous unrealized loss position	Gross unrealized losses relating to investment securities, available-for-sale aggregated by length of time that individual securities have been in a continuous unrealized loss position were as follows: Less Than 12 Months 12 Months or Greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) as of September 30, 2017 SIPs $ 28.4 $ (6.3 ) $ 2.4 $ (0.2 ) $ 30.8 $ (6.5 ) as of September 30, 2016 SIPs $ 75.8 $ (4.3 ) $ 18.0 $ (1.3 ) $ 93.8 $ (5.6 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	The assets and liability measured at fair value on a recurring basis were as follows: (in millions) Level 1 Level 2 Level 3 Total as of September 30, 2017 Assets Investment securities, trading SIPs $ 31.1 $ — $ — $ 31.1 Debt and other equity securities 18.2 78.4 186.8 283.4 Investment securities, available-for-sale SIPs 110.8 — — 110.8 Debt and other equity securities 1.0 0.6 0.3 1.9 Life settlement contracts — — 12.8 12.8 Total Assets Measured at Fair Value $ 161.1 $ 79.0 $ 199.9 $ 440.0 Liability Contingent consideration liability $ — $ — $ 51.0 $ 51.0 (in millions) Level 1 Level 2 Level 3 Total as of September 30, 2016 Assets Investment securities, trading SIPs $ 844.4 $ — $ — $ 844.4 Debt and other equity securities 2.6 84.1 190.8 277.5 Investment securities, available-for-sale SIPs 297.7 — — 297.7 Debt and other equity securities 1.6 2.1 — 3.7 Life settlement contracts — — 14.3 14.3 Total Assets Measured at Fair Value $ 1,146.3 $ 86.2 $ 205.1 $ 1,437.6 Liability Contingent consideration liability $ — $ — $ 98.1 $ 98.1
Schedule of changes in Level 3 assets and liabilities measured at fair value on a recurring basis	Changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: 2017 2016 (in millions) Investments Contingent Consideration Liabilities Investments Contingent Consideration Liability for the fiscal years ended September 30, Balance at beginning of year $ 205.1 $ (98.1 ) $ 20.7 $ (102.9 ) Acquisition — (5.7 ) — — Total realized and unrealized gains (losses) Included in investment and other income, net 8.5 — (2.4 ) — Included in general, administrative and other expense — 13.8 — 1.0 Purchases 5.4 — 190.4 — Sales (17.7 ) — (4.0 ) — Settlements (4.8 ) 39.0 (2.8 ) 3.8 Transfers out of Level 3 (0.4 ) — — — Foreign exchange revaluation 3.8 — 3.2 — Balance at End of Year $ 199.9 $ (51.0 ) $ 205.1 $ (98.1 ) Change in unrealized gains (losses) included in net income relating to assets and liability held at end of year $ 6.0 $ 8.1 $ (4.0 ) $ 1.0
Schedule of valuation techniques and significant unobservable inputs used in Level 3 fair value measurements	Valuation techniques and significant unobservable inputs used in recurring Level 3 fair value measurements were as follows: (in millions) as of September 30, 2017 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Investment securities, trading – debt and other equity securities $ 175.7 Market pricing Redemption price $73 per $100 of par Discount rate 18.6% 11.1 Discounted cash flow Discount rate 4.1%–6.7% (5.7%) Risk premium 2.0%–4.1% (2.9%) Life settlement contracts 12.8 Discounted cash flow Life expectancy 20–123 months (62) Discount rate 8.0%–20.0% (13.2%) Contingent consideration liability 51.0 Discounted cash flow AUM growth rate 1.3%–9.4% (5.3%) EBITDA margin 8.5%–8.9% (8.7%) Discount rate 14.6% (in millions) as of September 30, 2016 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Investment securities, trading - debt and other equity securities $ 190.8 Discounted cash flow Discount rate 3.6%–6.9% (6.7%) Risk premium 2.0%–17.9% (16.5%) Liquidity discount 0.0%–10.0% (9.6%) Life settlement contracts 14.3 Discounted cash flow Life expectancy 20–132 months (65) Discount rate 3.3%–18.0% (11.5%) Contingent consideration liability 98.1 Discounted cash flow AUM growth rate 2.4%–11.5% (5.9%) EBITDA margin 14.3% Discount rate 13.2%
Schedule of financial instruments not measured at fair value	Financial instruments that were not measured at fair value were as follows: (in millions) 2017 2016 as of September 30, Fair Value Level Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial Assets Cash and cash equivalents 1 $ 8,523.3 $ 8,523.3 $ 8,247.1 $ 8,247.1 Other investments Time deposits 2 13.4 13.4 131.6 131.6 Cost method investments 3 46.7 67.7 50.0 61.3 Financial Liabilities Debt Senior notes 2 $ 1,044.2 $ 1,073.5 $ 1,348.5 $ 1,412.5 Loan 2 — — 52.7 52.7

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Sep. 30, 2017
Property, Plant and Equipment, Net [Abstract]
Summary of property and equipment	Property and equipment, net consisted of the following: (in millions) Useful Lives In Years as of September 30, 2017 2016 Furniture, software and equipment $ 804.7 $ 756.4 3 – 10 Premises and leasehold improvements 580.9 563.5 5 – 35 Land 74.2 74.1 N/A Total cost 1,459.8 1,394.0 Less: accumulated depreciation and amortization (942.6 ) (870.8 ) Property and Equipment, Net $ 517.2 $ 523.2

Goodwill and Other Intangible30

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill and other intangible assets, net	Goodwill and other intangible assets, net consisted of the following: (in millions) as of September 30, 2017 2016 Goodwill $ 1,687.2 $ 1,661.2 Indefinite-lived intangible assets 534.0 530.9 Definite-lived intangible assets, net 6.5 19.2 Goodwill and Other Intangible Assets, Net $ 2,227.7 $ 2,211.3
Schedule of changes in carrying value of goodwill	Changes in the carrying value of goodwill were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 Balance at beginning of year $ 1,661.2 $ 1,661.2 Acquisition 18.8 — Foreign exchange revaluation 7.2 — Balance at End of Year $ 1,687.2 $ 1,661.2
Schedule of definite-lived intangible assets	Definite-lived intangible assets were as follows: 2017 2016 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value as of September 30, Management contracts $ 52.4 $ (45.9 ) $ 6.5 $ 60.1 $ (40.9 ) $ 19.2
Schedule of estimated remaining amortization expense	Definite-lived intangible assets had a weighted-average remaining useful life of 8.8 years at September 30, 2017 , with estimated remaining amortization expense as follows: (in millions) for the fiscal years ending September 30, Amount 2018 $ 1.0 2019 0.8 2020 0.8 2021 0.7 2022 0.5 Thereafter 2.7 Total $ 6.5

Debt (Tables)

Debt (Tables)	12 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of outstanding debt	Debt consisted of the following: (in millions) 2017 Effective Interest Rate 2016 Effective Interest Rate as of September 30, Senior Notes $300 million 1.375% notes due September 2017 $ — N/A $ 299.7 1.66 % $350 million 4.625% notes due May 2020 349.9 4.74 % 349.9 4.74 % $300 million 2.800% notes due September 2022 299.6 2.93 % 299.5 2.93 % $400 million 2.850% notes due March 2025 399.5 2.97 % 399.4 2.97 % Total senior notes 1,049.0 1,348.5 Other Loan due March 2017 — N/A 52.7 9.89 % Debt issuance costs (4.8 ) — Total $ 1,044.2 $ 1,401.2

Consolidated Sponsored Invest32

Consolidated Sponsored Investment Products (Tables)	12 Months Ended
	Sep. 30, 2017
Consolidated Sponsored Investment Products [Abstract]
Schedule of balances of CSIPs	The balances of consolidated SIPs included in the Company’s consolidated balance sheets were as follows: (in millions) as of September 30, 2017 2016 Assets Cash and cash equivalents $ 226.4 $ 236.2 Receivables 234.1 47.9 Investments, at fair value 3,467.4 1,513.4 Other assets 0.9 1.4 Total Assets $ 3,928.8 $ 1,798.9 Liabilities Accounts payable and accrued expenses $ 124.1 $ 65.2 Debt 53.4 682.2 Other liabilities 8.7 8.5 Total liabilities 186.2 755.9 Redeemable Noncontrolling Interests 1,941.9 61.1 Stockholders ’ Equity Franklin Resources, Inc.’s interests 1,511.8 414.1 Nonredeemable noncontrolling interests 288.9 567.8 Total stockholders’ equity 1,800.7 981.9 Total Liabilities, Redeemable Noncontrolling Interests and Stockholders ’ Equity $ 3,928.8 $ 1,798.9
Schedule of investments of CSIPs	Investments of consolidated SIPs consisted of the following: (in millions) as of September 30, 2017 2016 Investment securities, trading $ 3,017.2 $ 287.8 Other equity securities 306.9 607.3 Other debt securities 143.3 618.3 Total $ 3,467.4 $ 1,513.4
Schedule of investments in fund products for which fair value was estimated using NAV as a practical expedient	Investments in fund products for which fair value was estimated using NAV as a practical expedient were as follows: (in millions) as of September 30, Redemption Frequency 2017 2016 Real estate and private equity funds Nonredeemable $ 155.2 $ 444.2 Hedge funds Monthly, quarterly or triennially — 1.8 Total $ 155.2 $ 446.0
Schedule of assets and liabilities measured at fair value on a recurring basis	Assets and liabilities of consolidated SIPs measured at fair value on a recurring basis were as follows: (in millions) Level 1 Level 2 Level 3 NAV as a Practical Expedient Total as of September 30, 2017 Assets Investments Equity securities $ 331.4 $ 128.1 $ 160.7 $ 155.2 $ 775.4 Debt securities 1.4 2,555.2 135.4 — 2,692.0 Total Assets Measured at Fair Value $ 332.8 $ 2,683.3 $ 296.1 $ 155.2 $ 3,467.4 Liabilities Other liabilities $ 0.4 $ 8.3 $ — $ — $ 8.7 (in millions) Level 1 Level 2 Level 3 NAV as a Practical Expedient Total as of September 30, 2016 Assets Cash and cash equivalents of CLOs $ 146.4 $ — $ — $ — $ 146.4 Receivables of CLOs — 23.6 — — 23.6 Investments Equity securities 155.4 0.5 160.3 446.0 762.2 Debt securities — 618.9 132.3 — 751.2 Total Assets Measured at Fair Value $ 301.8 $ 643.0 $ 292.6 $ 446.0 $ 1,683.4 Liabilities Other liabilities $ 0.1 $ 8.4 $ — $ — $ 8.5
Schedule of changes in Level 3 assets and liabilities of CSIPs on a recurring basis	Changes in Level 3 assets measured at fair value on a recurring basis were as follows: 2017 2016 (in millions) Equity Securities Debt Securities Total Level 3 Assets Equity Securities Debt Securities Total Level 3 Assets for the fiscal years ended September 30, Balance at beginning of year $ 160.3 $ 132.3 $ 292.6 $ 191.6 $ 130.2 $ 321.8 Adoption of new accounting guidance (45.4 ) (0.5 ) (45.9 ) — — — Realized and unrealized gains (losses) included in investment and other income, net 19.2 (0.3 ) 18.9 1.2 (10.5 ) (9.3 ) Purchases 30.4 24.7 55.1 1.6 26.8 28.4 Sales (6.7 ) (22.3 ) (29.0 ) (34.0 ) (15.4 ) (49.4 ) Settlements — (0.6 ) (0.6 ) — — — Foreign exchange revaluation 2.9 2.1 5.0 (0.1 ) 1.2 1.1 Balance at End of Year $ 160.7 $ 135.4 $ 296.1 $ 160.3 $ 132.3 $ 292.6 Change in unrealized gains (losses) included in net income relating to assets held at end of year $ 29.4 $ (0.9 ) $ 28.5 $ (1.1 ) $ (10.9 ) $ (12.0 )
Schedule of valuation techniques and significant unobservable inputs used in recurring Level 3 fair value measurements	Valuation techniques and significant unobservable inputs used in recurring Level 3 fair value measurements were as follows: (in millions) as of September 30, 2017 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Equity securities $ 101.9 Market comparable companies EBITDA multiple 5.5–12.3 (9.0) 44.4 Discounted cash flow Discount rate 5.7%–17.9% (14.3%) 14.4 Market pricing Price to earnings ratio 10.0 Debt securities 112.7 Discounted cash flow Discount rate 5.0%–33.0% (9.5%) Risk premium 0.0%–25.0% (8.4%) 22.7 Market pricing Private sale pricing $33–$57 ($52) per $100 of par (in millions) as of September 30, 2016 Fair Value Valuation Technique Significant Unobservable Inputs Range (Weighted Average) Equity securities $ 113.1 Market comparable companies EBITDA multiple 5.0–14.2 (10.3) Discount for lack of marketability 25.0%–50.0% (36.6%) 24.3 Discounted cash flow Discount rate 5.0%–19.0% (13.7%) 22.9 Market pricing Price to book value ratio 1.8–2.3 (2.0) Debt securities 119.7 Discounted cash flow Discount rate 6.0%–15.0% (10.4%) Risk premium 0.0%–28.0% (9.7%) EBITDA multiple 5.5 12.6 Market pricing Private sale pricing $57 per $100 of par
Schedule of financial instruments of CSIPs not measured at fair value	Financial instruments of consolidated SIPs that were not measured at fair value were as follows: (in millions) 2017 2016 as of September 30, Fair Value Level Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial Assets Cash and cash equivalents 1 $ 226.4 $ 226.4 $ 89.8 $ 89.8 Financial Liabilities Debt, excluding CLOs 3 $ 53.4 $ 53.1 $ 75.0 $ 74.6 Debt of CLOs 1 2 or 3 — — 607.2 594.5 _________________ 1 Substantially all was Level 2.
Schedule of debt of consolidated SIPs	Debt of consolidated SIPs consisted of the following: 2017 2016 (in millions) Amount Weighted-Average Effective Interest Rate Amount Weighted-Average Effective Interest Rate as of September 30, Debt, excluding CLOs $ 53.4 5.15% $ 75.0 4.79% Debt of CLOs — N/A 607.2 2.24% Total $ 53.4 $ 682.2
Schedule of contractual maturities for debt of CSIPs	At September 30, 2017 , maturities for debt of consolidated SIPs were as follows: (in millions) Carrying Amount for the fiscal years ending September 30, 2018 $ 5.8 2019 47.6 Total $ 53.4
Schedule of changes in redeemable noncontrolling interests of CSIPs	Changes in redeemable noncontrolling interests of consolidated SIPs were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Balance at beginning of year $ 61.1 $ 59.6 $ 234.8 Adoption of new accounting guidance 824.7 — — Net income (loss) 53.0 1.6 (6.1 ) Net subscriptions and other 884.3 79.9 149.4 Net consolidations (deconsolidations) 118.8 (80.0 ) (318.5 ) Balance at End of Year $ 1,941.9 $ 61.1 $ 59.6

Nonconsolidated Variable Inte33

Nonconsolidated Variable Interest Entities (Tables)	12 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of maximum exposure loss from nonconsolidated VIEs	The Company’s maximum exposure to loss from these VIEs consists of equity investments and investment management fee receivables as follows: (in millions) as of September 30, 2017 2016 Receivables $ 155.6 $ 21.4 Investments 129.3 77.3 Total $ 284.9 $ 98.7

Taxes on Income (Tables)

Taxes on Income (Tables)	12 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Schedule of taxes on income	Taxes on income were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Current expense Federal $ 585.0 $ 582.8 $ 733.9 State 65.3 47.5 83.1 Non-U.S. 100.2 102.8 121.1 Deferred expense (benefit) 8.9 9.0 (14.4 ) Total $ 759.4 $ 742.1 $ 923.7
Schedule of income before taxes	Income before taxes consisted of the following: (in millions) for the fiscal years ended September 30, 2017 2016 2015 U.S. $ 1,594.5 $ 1,641.7 $ 2,026.4 Non-U.S. 954.6 858.1 1,002.0 Total $ 2,549.1 $ 2,499.8 $ 3,028.4
Components of deferred tax assets and liabilities	The significant components of deferred tax assets and deferred tax liabilities were as follows: (in millions) as of September 30, 2017 2016 Deferred Tax Assets Deferred compensation and employee benefits $ 60.2 $ 52.9 Stock-based compensation 36.1 36.6 Net operating loss carry-forwards 28.4 32.5 Tax benefit for uncertain tax positions 17.9 19.8 Other 23.9 12.5 Total deferred tax assets 166.5 154.3 Valuation allowance for net operating loss carry-forwards (25.2 ) (24.6 ) Deferred tax assets, net of valuation allowance 141.3 129.7 Deferred Tax Liabilities Goodwill and other purchased intangibles 205.2 202.8 Depreciation on fixed assets 35.3 18.0 Investments in partnerships 26.0 17.9 Deferred commissions 15.0 18.3 Other 14.6 16.5 Total deferred tax liabilities 296.1 273.5 Net Deferred Tax Liability $ 154.8 $ 143.8
Components of net deferred tax assets or liabilities as classified in the consolidated balance sheets	The components of the net deferred tax liability were classified in the consolidated balance sheets as follows: (in millions) as of September 30, 2017 2016 Other assets $ 15.8 $ 17.7 Deferred tax liabilities 170.6 161.5 Net Deferred Tax Liability $ 154.8 $ 143.8
Reconciliation of the amount of tax expense at the federal statutory rate and taxes on income	A reconciliation of the amount of tax expense at the federal statutory rate and taxes on income as reflected in the consolidated statements of income is as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Federal taxes at statutory rate $ 892.2 35.0 % $ 874.9 35.0 % $ 1,059.9 35.0 % State taxes, net of federal tax effect 41.4 1.6 % 42.7 1.7 % 51.6 1.7 % Effect of non-U.S. operations (146.2 ) (5.7 %) (153.0 ) (6.1 %) (148.5 ) (4.9 %) Effect of net income attributable to noncontrolling interests (32.6 ) (1.3 %) (10.9 ) (0.4 %) (24.3 ) (0.8 %) Other 4.6 0.2 % (11.6 ) (0.5 %) (15.0 ) (0.5 %) Tax Provision $ 759.4 29.8 % $ 742.1 29.7 % $ 923.7 30.5 %
Reconciliation of gross unrecognized tax benefits	A reconciliation of the beginning and ending balances of gross unrecognized tax benefits is as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Balance at beginning of year $ 82.1 $ 105.2 $ 118.2 Additions for tax positions of prior years 6.6 0.6 12.6 Reductions for tax positions of prior years (1.3 ) (9.0 ) (3.4 ) Tax positions related to the current year 11.6 12.9 16.2 Settlements with taxing authorities (5.2 ) (5.4 ) (0.1 ) Expirations of statute of limitations (12.7 ) (22.2 ) (38.3 ) Balance at End of Year $ 81.1 $ 82.1 $ 105.2

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments under long-term non-cancelable operating leases	Future minimum lease payments under long-term non-cancelable operating leases were as follows as of September 30, 2017 : (in millions) for the fiscal years ending September 30, Amount 2018 $ 44.7 2019 41.1 2020 35.6 2021 31.4 2022 28.4 Thereafter 185.8 Total Minimum Lease Payments $ 367.0

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Sep. 30, 2017
Share-based Compensation [Abstract]
Summary of stock-based compensation expenses	Stock-based compensation expenses were as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Stock and stock unit awards $ 117.0 $ 125.3 $ 133.6 Employee stock investment plan 6.4 6.2 6.4 Total $ 123.4 $ 131.5 $ 140.0
Summary of nonvested stock and stock unit award activity	Stock and stock unit award activity was as follows: (shares in thousands) Time-Based Shares Performance-Based Shares Total Shares Weighted-Average Grant-Date Fair Value for the fiscal year ended September 30, 2017 Nonvested balance at September 30, 2016 2,369 1,288 3,657 $ 45.67 Granted 2,739 1,124 3,863 34.23 Vested (2,082 ) (355 ) (2,437 ) 43.90 Forfeited/canceled (243 ) (296 ) (539 ) 42.86 Nonvested Balance at September 30, 2017 2,783 1,761 4,544 $ 37.23

Segment and Geographic Inform37

Segment and Geographic Information (Tables)	12 Months Ended
	Sep. 30, 2017
Segment Reporting, Measurement Disclosures [Abstract]
Schedule of operating revenues, property and equipment by geographic areas	Geographic information was as follows: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Operating Revenues United States $ 3,898.4 $ 4,063.6 $ 4,634.2 Luxembourg 1,652.8 1,707.9 2,278.6 Asia-Pacific 281.0 267.9 311.8 Canada 260.8 273.8 339.0 The Bahamas 205.9 204.6 250.2 Europe, the Middle East and Africa, excluding Luxembourg 83.2 94.0 126.8 Latin America 10.1 6.2 8.1 Total $ 6,392.2 $ 6,618.0 $ 7,948.7 (in millions) as of September 30, 2017 2016 2015 Property and Equipment, Net United States $ 426.1 $ 428.0 $ 406.9 Asia-Pacific 60.2 62.9 68.9 The Bahamas 13.4 14.3 14.6 Europe, the Middle East and Africa 12.2 14.9 14.8 Canada 5.3 3.1 4.5 Latin America — — 0.4 Total $ 517.2 $ 523.2 $ 510.1

Other Income (Expenses) (Tables

Other Income (Expenses) (Tables)	12 Months Ended
	Sep. 30, 2017
Other Income and Expenses [Abstract]
Schedule of other income (expenses)	Other income (expenses) consisted of the following: (in millions) for the fiscal years ended September 30, 2017 2016 2015 Investment and Other Income, Net Dividend income $ 13.9 $ 20.6 $ 10.3 Interest income 74.9 36.5 10.8 Gains (losses) on trading investment securities, net 12.2 50.1 (22.3 ) Realized gains on sale of investment securities, available-for-sale 5.6 32.1 28.1 Realized losses on sale of investment securities, available-for-sale (1.6 ) (3.2 ) (4.0 ) Income (losses) from investments in equity method investees 107.9 56.7 (63.2 ) Other-than-temporary impairment of investments (0.8 ) (11.1 ) (10.0 ) Gains (losses) on investments of consolidated SIPs, net 118.2 (13.5 ) 18.0 Foreign currency exchange gains (losses), net (16.0 ) (2.9 ) 57.0 Other, net 22.0 18.7 15.7 Total 336.3 184.0 40.4 Interest Expense (51.5 ) (49.9 ) (39.6 ) Other Income, Net $ 284.8 $ 134.1 $ 0.8

Accumulated Other Comprehensi39

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Changes in accumulated other comprehensive income (loss) by component	Changes in accumulated other comprehensive income (loss) by component were as follows: (in millions) Unrealized Gains on Investments Currency Translation Adjustments Unrealized Losses on Total for the fiscal year ended September 30, 2017 Balance at October 1, 2016 $ 6.8 $ (346.1 ) $ (8.1 ) $ (347.4 ) Adoption of new accounting guidance (6.8 ) (0.3 ) — (7.1 ) Other comprehensive income Other comprehensive income before reclassifications, net of tax 6.5 65.4 2.1 74.0 Reclassifications to net investment and other income, net of tax (4.3 ) — — (4.3 ) Total other comprehensive income 2.2 65.4 2.1 69.7 Balance at September 30, 2017 $ 2.2 $ (281.0 ) $ (6.0 ) $ (284.8 ) (in millions) Unrealized Gains on Investments Currency Translation Adjustments Unrealized Losses on Defined Benefit Plans Total for the fiscal year ended September 30, 2016 Balance at October 1, 2015 $ 19.3 $ (327.8 ) $ (5.7 ) $ (314.2 ) Other comprehensive loss Other comprehensive income (loss) before reclassifications, net of tax 2.7 (18.3 ) (2.4 ) (18.0 ) Reclassifications to net investment and other income, net of tax (15.2 ) — — (15.2 ) Total other comprehensive loss (12.5 ) (18.3 ) (2.4 ) (33.2 ) Balance at September 30, 2016 $ 6.8 $ (346.1 ) $ (8.1 ) $ (347.4 )

Significant Accounting Polici40

Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Sep. 30, 2017
Property, Plant and Equipment [Line Items]
Number of reporting units	1
Stock-based compensation awards vesting period	3 years
Deferred sales commission amortization period, minimum	1 year
Deferred sales commission amortization period, maximum	7 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Intangible assets, estimated useful lives	5 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	35 years
Intangible assets, estimated useful lives	15 years

New Accounting Guidance New Acc

New Accounting Guidance New Accounting Guidance - Narrative (Details) $ in Millions	Sep. 30, 2017	Oct. 01, 2016USD ($)	Sep. 30, 2016USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of consolidated sponsored investment products	58		40
Number of deconsolidated collateralized loan obligations (“CLOs”)	0		3
ASU 2015-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of consolidated sponsored investment products		24
Number of other SIPs that are consolidated VIEs		3
Number of deconsolidated collateralized loan obligations (“CLOs”)		2
Number of deconsolidated limited partnerships		5
Adoption of new accounting guidance			$ (325.9)
Liability [Member] | ASU 2015-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of new accounting guidance		$ (317.9)
Redeemable Noncontrolling Interests [Member] | ASU 2015-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of new accounting guidance		824.7
Retained Earnings [Member] | ASU 2015-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of new accounting guidance		5.8
Nonredeemable Noncontrolling Interests [Member] | ASU 2015-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of new accounting guidance		(324.6)
Other equity [Member] | ASU 2015-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of new accounting guidance		(7.1)
Assets [Member] | ASU 2015-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of new accounting guidance		$ 180.9

Earnings per Share - Narrative

Earnings per Share - Narrative (Details) - shares shares in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Shares of nonparticipating nonvested stock unit awards excluded from the calculation of diluted EPS	0.7	1.3	0.9

Earnings per Share - Components

Earnings per Share - Components of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Franklin Resources, Inc.	$ 1,696.7	$ 1,726.7	$ 2,035.3
Less: allocation of earnings to participating nonvested stock and stock unit awards - basic	12.4	10.9	12
Less: allocation of earnings to participating nonvested stock and stock unit awards - diluted	12.4	10.9	12
Net Income Available to Common Stockholders - basic	1,684.3	1,715.8	2,023.3
Net Income Available to Common Stockholders - diluted	$ 1,684.3	$ 1,715.8	$ 2,023.3
Weighted-average shares outstanding – basic	558.8	583.8	614.8
Dilutive effect of nonparticipating nonvested stock unit awards	0.3	0	0.1
Weighted-Average Shares Outstanding – Diluted	559.1	583.8	614.9
Earnings per Share [Abstract]
Basic	$ 3.01	$ 2.94	$ 3.29
Diluted	$ 3.01	$ 2.94	$ 3.29

Investments - Narrative (Detail

Investments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Investments [Abstract]
Aggregate carrying values of investment securities pledged as collateral	$ 0.8	$ 117.3
Other-than-temporary impairment of investments	$ 0.8	11.1	$ 10
SIPs [Member]
Investment Holdings [Line Items]
Other-than-temporary impairment of available-for-sale SIPs		$ 5.8	$ 8.2

Investments - Summary of Invest

Investments - Summary of Investments (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Investment Holdings [Line Items]
Investment securities, trading	$ 314.5	$ 1,121.9
Investment securities, available-for-sale	112.7	301.4
Investments in equity method investees	893.5	797.4
Other investments	72.9	195.9
Total	1,393.6	2,416.6
SIPs [Member]
Investment Holdings [Line Items]
Investment securities, trading	31.1	844.4
Investment securities, available-for-sale	110.8	297.7
Debt and Other Equity Securities [Member]
Investment Holdings [Line Items]
Investment securities, trading	283.4	277.5
Investment securities, available-for-sale	$ 1.9	$ 3.7

Investments - Summary of Gross

Investments - Summary of Gross Unrealized Gains and Losses Relating to Investment Securities, available-for-Sale (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Investment Holdings [Line Items]
Cost Basis	$ 109.8	$ 293.2
Gross Unrealized Gains	9.4	13.8
Gross Unrealized Losses	(6.5)	(5.6)
Fair Value	112.7	301.4
SIPs [Member]
Investment Holdings [Line Items]
Cost Basis	107.9	289.6
Gross Unrealized Gains	9.4	13.7
Gross Unrealized Losses	(6.5)	(5.6)
Fair Value	110.8	297.7
Debt and Other Equity Securities [Member]
Investment Holdings [Line Items]
Cost Basis	1.9	3.6
Gross Unrealized Gains	0	0.1
Gross Unrealized Losses	0	0
Fair Value	$ 1.9	$ 3.7

Investments - Summary of Gros47

Investments - Summary of Gross Unrealized Losses, AFS, Continuous Loss Position (Details) - SIPs [Member] - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 28.4	$ 75.8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Gross Unrealized Losses	(6.3)	(4.3)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Greater, Fair Value	2.4	18
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Greater, Gross Unrealized Losses	(0.2)	(1.3)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	30.8	93.8
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Gross Unrealized Losses	$ (6.5)	$ (5.6)

Fair Value Measurement - Narrat

Fair Value Measurement - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Transfers into Level 1 from Level 2 - assets	$ 0	$ 0
Transfers into Level 2 from Level 1 - assets	0	0
Transfers into Level 1 from Level 2 - liabilities	0	0
Transfers into Level 2 from Level 1 - liabilities	0	0
Transfers into Level 3 - assets	0	0
Transfers into Level 3 - liabilities	$ 0	$ 0

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Assets [Abstract]
Investment securities, trading	$ 314.5	$ 1,121.9
Investment securities, available-for-sale	112.7	301.4
Life settlement contracts	12.8	14.3
Total Assets Measured at Fair Value	440	1,437.6
Liability [Abstract]
Contingent consideration liability	51	98.1
Level 1 [Member]
Assets [Abstract]
Life settlement contracts	0	0
Total Assets Measured at Fair Value	161.1	1,146.3
Liability [Abstract]
Contingent consideration liability	0	0
Level 2 [Member]
Assets [Abstract]
Life settlement contracts	0	0
Total Assets Measured at Fair Value	79	86.2
Liability [Abstract]
Contingent consideration liability	0	0
Level 3 [Member]
Assets [Abstract]
Life settlement contracts	12.8	14.3
Total Assets Measured at Fair Value	199.9	205.1
Liability [Abstract]
Contingent consideration liability	51	98.1
SIPs [Member]
Assets [Abstract]
Investment securities, trading	31.1	844.4
Investment securities, available-for-sale	110.8	297.7
SIPs [Member] | Level 1 [Member]
Assets [Abstract]
Investment securities, trading	31.1	844.4
Investment securities, available-for-sale	110.8	297.7
SIPs [Member] | Level 2 [Member]
Assets [Abstract]
Investment securities, trading	0	0
Investment securities, available-for-sale	0	0
SIPs [Member] | Level 3 [Member]
Assets [Abstract]
Investment securities, trading	0	0
Investment securities, available-for-sale	0	0
Debt and Other Equity Securities [Member]
Assets [Abstract]
Investment securities, trading	283.4	277.5
Investment securities, available-for-sale	1.9	3.7
Debt and Other Equity Securities [Member] | Level 1 [Member]
Assets [Abstract]
Investment securities, trading	18.2	2.6
Investment securities, available-for-sale	1	1.6
Debt and Other Equity Securities [Member] | Level 2 [Member]
Assets [Abstract]
Investment securities, trading	78.4	84.1
Investment securities, available-for-sale	0.6	2.1
Debt and Other Equity Securities [Member] | Level 3 [Member]
Assets [Abstract]
Investment securities, trading	186.8	190.8
Investment securities, available-for-sale	$ 0.3	$ 0

Fair Value Measurements - Sch50

Fair Value Measurements - Schedule of Changes in Level 3 Assets and Liabilities (Details) - Level 3 [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of year - assets	$ 292.6	$ 321.8
Total realized and unrealized gains (losses) - assets	18.9	(9.3)
Purchases - assets	55.1	28.4
Sales - assets	(29)	(49.4)
Settlements - assets	(0.6)	0
Foreign exchange revaluation	5	1.1
Balance at End of Year - Assets	296.1	292.6
Change in unrealized gains (losses) included in net income relating to assets and liability held at the end of the year	28.5	(12)
Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of year - assets	205.1	20.7
Acquisition - assets	0	0
Purchases - assets	5.4	190.4
Sales - assets	(17.7)	(4)
Settlements - assets	(4.8)	(2.8)
Transfers out of Level 3 - assets	(0.4)	0
Foreign exchange revaluation	3.8	3.2
Balance at End of Year - Assets	199.9	205.1
Change in unrealized gains (losses) included in net income relating to assets and liability held at the end of the year	6	(4)
Contingent Consideration Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of year - liabilities	(98.1)	(102.9)
Acquisition - liabilities	(5.7)	0
Purchases - liabilities	0	0
Sales - liabilities	0	0
Settlements - liabilities	39	3.8
Transfers out of Level 3 - liabilities	0	0
Foreign exchange revaluation	0	0
Balance at End of Year - Liabilities	(51)	(98.1)
Change in unrealized gains (losses) included in net income relating to assets and liability held at the end of the year	8.1	1
Investment and other income [Member] | Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized and unrealized gains (losses) - assets	8.5	(2.4)
Investment and other income [Member] | Contingent Consideration Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized and unrealized gains (losses) - liabilities	0	0
General, administrative and other expense [Member] | Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized and unrealized gains (losses) - assets	0	0
General, administrative and other expense [Member] | Contingent Consideration Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized and unrealized gains (losses) - liabilities	$ 13.8	$ 1

Fair Value Measurements - Sch51

Fair Value Measurements - Schedule of Valuation Techniques and Significant Unobservable Inputs used in Level 3 Fair Value Measurements (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities, trading	$ 314.5	$ 1,121.9
Life settlement contracts	12.8	14.3
Contingent consideration liability	51	98.1
Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Life settlement contracts	12.8	14.3
Contingent consideration liability	$ 51	$ 98.1
Contingent Consideration Liability [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
AUM growth rate	1.30%	2.40%
EBITDA margin	8.50%
Contingent Consideration Liability [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
AUM growth rate	9.40%	11.50%
EBITDA margin	8.90%
Contingent Consideration Liability [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	14.60%	13.20%
AUM growth rate	5.30%	5.90%
EBITDA margin	8.70%	14.30%
Life settlement contracts [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	8.00%	3.30%
Life expectancy (in months)	20 months	20 months
Life settlement contracts [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	20.00%	18.00%
Life expectancy (in months)	123 months	132 months
Life settlement contracts [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	13.20%	11.50%
Life expectancy (in months)	62 months	65 months
Debt and Other Equity Securities [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities, trading	$ 283.4	$ 277.5
Debt and Other Equity Securities [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities, trading	186.8	$ 190.8
Debt and Other Equity Securities [Member] | Discounted cash flow [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities, trading	11.1
Debt and Other Equity Securities [Member] | Market pricing [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities, trading	$ 175.7
Debt and Other Equity Securities [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	4.10%	3.60%
Risk premium	2.00%	2.00%
Liquidity discount		0.00%
Debt and Other Equity Securities [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	6.70%	6.90%
Risk premium	4.10%	17.90%
Liquidity discount		10.00%
Debt and Other Equity Securities [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	5.70%	6.70%
Risk premium	2.90%	16.50%
Liquidity discount		9.60%
Debt and Other Equity Securities [Member] | Weighted Average [Member] | Market pricing [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Redemption price	$ 0.73
Discount rate	18.60%

Fair Value Measurements - Finan

Fair Value Measurements - Financial Instruments not Measured at Fair Value (Details) $ in Millions, ₨ in Billions	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2016INR (₨)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 8,749.7	$ 8,483.3			$ 8,368.1	$ 7,596
Senior notes	1,049	1,348.5
Loan	0	52.7	$ 93.4	₨ 6.3
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	8,523.3	8,247.1
Time deposits	13.4	131.6
Cost method investments	46.7	50
Senior notes	1,044.2	1,348.5
Loan	0	52.7
Estimated Fair Value [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	8,523.3	8,247.1
Estimated Fair Value [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Time deposits	13.4	131.6
Senior notes	1,073.5	1,412.5
Loan	0	52.7
Estimated Fair Value [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investments	$ 67.7	$ 61.3

Property and Equipment - Narrat

Property and Equipment - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Property, Plant and Equipment, Net [Abstract]
Depreciation and amortization expense	$ 81.5	$ 81	$ 81.6

Property and Equipment - Summar

Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Property, Plant and Equipment, Net, by Type [Abstract]
Total cost	$ 1,459.8	$ 1,394
Less: accumulated depreciation and amortization	(942.6)	(870.8)
Property and Equipment, Net	$ 517.2	523.2	$ 510.1
Minimum [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and Equipment, Useful Lives	3 years
Maximum [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and Equipment, Useful Lives	35 years
Furniture, software and equipment [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total cost	$ 804.7	756.4
Furniture, software and equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and Equipment, Useful Lives	3 years
Furniture, software and equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and Equipment, Useful Lives	10 years
Premises and leasehold improvements [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total cost	$ 580.9	563.5
Premises and leasehold improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and Equipment, Useful Lives	5 years
Premises and leasehold improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and Equipment, Useful Lives	35 years
Land [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Total cost	$ 74.2	$ 74.1

Goodwill and Other Intangible55

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Impairment Loss	$ 0	$ 0	$ 0
Indefinite-lived intangible assets, impairment	0	0	0
Amortization of Intangible Assets	3.9	10.4	20.1
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 9.6	28.2	8.2
Definite-lived intangible assets weighted-average remaining useful life	8 years 9 months
Management contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 9.6	$ 28.2	$ 8.2

Goodwill and Other Intangible56

Goodwill and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 1,687.2	$ 1,661.2	$ 1,661.2
Indefinite-lived intangible assets	534	530.9
Definite-lived intangible assets, net	6.5	19.2
Total	$ 2,227.7	$ 2,211.3

Goodwill and Other Intangible57

Goodwill and Other Intangible Assets Schedule of Changes in Carrying Values of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Balance at beginning of year	$ 1,661.2	$ 1,661.2
Acquisition	18.8	0
Foreign exchange revaluation	7.2	0
Balance at End of Year	$ 1,687.2	$ 1,661.2

Goodwill and Other Intangible58

Goodwill and Other Intangible Assets - Schedule of Definite Lived Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Net Carrying Value	$ 6.5	$ 19.2
Management contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	52.4	60.1
Accumulated Amortization	(45.9)	(40.9)
Net Carrying Value	$ 6.5	$ 19.2

Goodwill and Other Intangible59

Goodwill and Other Intangible Assets - Schedule of Estimated Remaining Amortization Expense (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,018	$ 1
2,019	0.8
2,020	0.8
2,021	0.7
2,022	0.5
Thereafter	2.7
Net Carrying Value	$ 6.5	$ 19.2

Debt - Narrative (Details)

Debt - Narrative (Details) $ in Millions, ₨ in Billions	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2016INR (₨)
Line of Credit Facility [Line Items]
Face value of senior unsecured and unsubordinated notes	$ 1,100
Loan	0	$ 52.7	$ 93.4	₨ 6.3
Stated interest rate			9.89%	9.89%
Collateralized time deposit			$ 116
Standby Letters of Credit [Member]
Line of Credit Facility [Line Items]
Standby letter of credit			$ 96.6	₨ 6.5
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial paper available for issuance under an uncommitted private placement program	$ 500

Debt - Outstanding Debt (Detail

Debt - Outstanding Debt (Details) $ in Millions, ₨ in Billions	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2016INR (₨)
Debt Instrument [Line Items]
Senior notes	$ 1,049	$ 1,348.5
Loan due March 2017	0	$ 52.7	$ 93.4	₨ 6.3
Effective Interest Rate		9.89%
Debt issuance costs	(4.8)	$ 0
Total	1,044.2	1,401.2
Stated interest rate			9.89%	9.89%
Notes Due September 2017 [Member]
Debt Instrument [Line Items]
Senior notes	0	$ 299.7
Effective Interest Rate		1.66%
Face value of senior notes	$ 300
Stated interest rate	1.375%
Notes Due May 2020 [Member]
Debt Instrument [Line Items]
Senior notes	$ 349.9	$ 349.9
Effective Interest Rate	4.74%	4.74%
Face value of senior notes	$ 350
Stated interest rate	4.625%
Notes Due September 2022 [Member]
Debt Instrument [Line Items]
Senior notes	$ 299.6	$ 299.5
Effective Interest Rate	2.93%	2.93%
Face value of senior notes	$ 300
Stated interest rate	2.80%
Notes Due March 2025 [Member]
Debt Instrument [Line Items]
Senior notes	$ 399.5	$ 399.4
Effective Interest Rate	2.97%	2.97%
Face value of senior notes	$ 400
Stated interest rate	2.85%

Consolidated Sponsored Invest62

Consolidated Sponsored Investment Products - Narrative (Details) $ in Millions	12 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Mar. 31, 2016
Consolidated Sponsored Investment Products [Abstract]
Number of consolidated sponsored investment products	58	40
Number of CLOs	0	3
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Transfers into Level 2 from Level 1 - assets	$ 0	$ 0
Transfers into Level 2 from Level 1 - liabilities	0	0
Transfers into Level 1 from Level 2 - assets	0	0
Transfers into Level 1 from Level 2 - liabilities	0	0
Transfers into Level 3 - assets	0	0
Stated interest rate			9.89%
CLOs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Net gains related to its own economic interests	4.8	6.2
Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Consolidated SIPs' unfunded commitments	1.9	74.4
Unfunded commitments company contractually obligated to fund	0.4	2.2
Transfers into Level 2 from Level 1 - assets	0	0
Transfers into Level 2 from Level 1 - liabilities	0	0
Transfers into Level 1 from Level 2 - assets	0	0
Transfers into Level 1 from Level 2 - liabilities	0	0
Transfers into Level 3 - assets	0	0
Transfers out of Level 3 - assets	$ 0	$ 0
Real Estate and Private Equity Funds [Member] | Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Liquidation weighted average period	4 years 5 months	3 years 2 months
Minimum [Member] | Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Stated interest rate	2.84%	2.36%
Maximum [Member] | Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Stated interest rate	6.75%	6.19%

Consolidated Sponsored Invest63

Consolidated Sponsored Investment Products - Schedule of Balances of CSIPs (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Assets [Abstract]
Cash and cash equivalents	$ 8,749.7	$ 8,483.3	$ 8,368.1	$ 7,596
Receivables	767.8	746.4
Investments, at fair value	440	1,437.6
Other assets	176.5	156.7
Total Assets	17,534	16,098.8
Liabilities [Abstract]
Accounts payable and accrued expenses	291.5	233.3
Debt	1,044.2	1,401.2
Other liabilities	273.4	267.3
Total liabilities	2,656.3	3,509.5
Redeemable Noncontrolling Interests	1,941.9	61.1	59.6	234.8
Stockholders' Equity [Abstract]
Franklin Resources, Inc.’s interests	12,620	11,935.8
Nonredeemable noncontrolling interests	315.8	592.4
Total stockholders’ equity	12,935.8	12,528.2	$ 12,495.8	$ 12,212.4
Total Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity	17,534	16,098.8
Consolidated SIPs [Member]
Assets [Abstract]
Cash and cash equivalents	226.4	236.2
Receivables	234.1	47.9
Investments, at fair value	3,467.4	1,513.4
Other assets	0.9	1.4
Total Assets	3,928.8	1,798.9
Liabilities [Abstract]
Accounts payable and accrued expenses	124.1	65.2
Debt	53.4	682.2
Other liabilities	8.7	8.5
Total liabilities	186.2	755.9
Redeemable Noncontrolling Interests	1,941.9	61.1
Stockholders' Equity [Abstract]
Franklin Resources, Inc.’s interests	1,511.8	414.1
Nonredeemable noncontrolling interests	288.9	567.8
Total stockholders’ equity	1,800.7	981.9
Total Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity	$ 3,928.8	$ 1,798.9

Consolidated Sponsored Invest64

Consolidated Sponsored Investment Products - Schedule of Investments of CSIPs (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Investment securities, trading	$ 314.5	$ 1,121.9
Fair value	440	1,437.6
Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Investment securities, trading	3,017.2	287.8
Other equity securities	306.9	607.3
Other debt securities	143.3	618.3
Fair value	$ 3,467.4	$ 1,513.4

Consolidated Sponsored Invest65

Consolidated Sponsored Investment Products - Schedule of Investments in Fund Products for which Fair Value was Estimated using NAV as a Practical Expedient (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investments in funds products for which fair value was estimated using NAV	$ 155.2	$ 446
Real Estate and Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investments in funds products for which fair value was estimated using NAV	155.2	444.2
Hedge Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investments in funds products for which fair value was estimated using NAV	$ 0	$ 1.8

Consolidated Sponsored Invest66

Consolidated Sponsored Investment Products - Schedule of Balances of Assets and Liabilities of CSIPs Measured at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Total Assets Measured at Fair Value	$ 440	$ 1,437.6
NAV as a Practical Expedient	155.2	446
Level 1 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Total Assets Measured at Fair Value	161.1	1,146.3
Level 2 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Total Assets Measured at Fair Value	79	86.2
Level 3 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Total Assets Measured at Fair Value	199.9	205.1
Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	306.9	607.3
Debt securities	143.3	618.3
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	775.4	762.2
Debt securities	2,692	751.2
Total Assets Measured at Fair Value	3,467.4	1,683.4
Other liabilities	8.7	8.5
NAV as a Practical Expedient	155.2	446
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member] | Level 1 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	331.4	155.4
Debt securities	1.4	0
Total Assets Measured at Fair Value	332.8	301.8
Other liabilities	0.4	0.1
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member] | Level 2 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	128.1	0.5
Debt securities	2,555.2	618.9
Total Assets Measured at Fair Value	2,683.3	643
Other liabilities	8.3	8.4
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member] | Level 3 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	160.7	160.3
Debt securities	135.4	132.3
Total Assets Measured at Fair Value	296.1	292.6
Other liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member] | CLOs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents of CLOs		146.4
Receivables of CLOs		23.6
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member] | CLOs [Member] | Level 1 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents of CLOs		146.4
Receivables of CLOs		0
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member] | CLOs [Member] | Level 2 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents of CLOs		0
Receivables of CLOs		23.6
Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member] | CLOs [Member] | Level 3 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents of CLOs		0
Receivables of CLOs		0
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
NAV as a Practical Expedient	$ 155.2	$ 446

Consolidated Sponsored Invest67

Consolidated Sponsored Investment Products - Schedule of Changes in Level 3 Assets and Liabilities of CSIPs (Details) - Level 3 [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Balance at beginning of year - assets	$ 292.6	$ 321.8
Realized and unrealized gains (losses) included in investment and other income, net	18.9	(9.3)
Purchases	55.1	28.4
Sales	(29)	(49.4)
Settlements	(0.6)	0
Foreign exchange revaluation	5	1.1
Balance at End of Year - Assets	296.1	292.6
Change in unrealized gains (losses) included in net income relating to assets held at the end of the year	28.5	(12)
Equity Securities [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Balance at beginning of year - assets	160.3	191.6
Realized and unrealized gains (losses) included in investment and other income, net	19.2	1.2
Purchases	30.4	1.6
Sales	(6.7)	(34)
Settlements	0	0
Foreign exchange revaluation	2.9	(0.1)
Balance at End of Year - Assets	160.7	160.3
Change in unrealized gains (losses) included in net income relating to assets held at the end of the year	29.4	(1.1)
Debt Securities [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Balance at beginning of year - assets	132.3	130.2
Realized and unrealized gains (losses) included in investment and other income, net	(0.3)	(10.5)
Purchases	24.7	26.8
Sales	(22.3)	(15.4)
Settlements	(0.6)	0
Foreign exchange revaluation	2.1	1.2
Balance at End of Year - Assets	135.4	132.3
Change in unrealized gains (losses) included in net income relating to assets held at the end of the year	(0.9)	$ (10.9)
ASU 2015-02 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Adoption of new accounting guidance	(45.9)
ASU 2015-02 [Member] | Equity Securities [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Adoption of new accounting guidance	(45.4)
ASU 2015-02 [Member] | Debt Securities [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Adoption of new accounting guidance	$ (0.5)

Consolidated Sponsored Invest68

Consolidated Sponsored Investment Products - Schedule of Valuation Techniques and Significant Unobservable Inputs used in Level 3 Fair Value Measurements (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Equity Securities [Member] | Minimum [Member] | Market comparable companies [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
EBITDA multiple	5.5	5
Discount for lack of marketability		25.00%
Equity Securities [Member] | Minimum [Member] | Discounted cash flow [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Discount rate	5.70%	5.00%
Equity Securities [Member] | Minimum [Member] | Market pricing [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Price to book value		$ 1.8
Equity Securities [Member] | Maximum [Member] | Market comparable companies [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
EBITDA multiple	12.3	14.2
Discount for lack of marketability		50.00%
Equity Securities [Member] | Maximum [Member] | Discounted cash flow [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Discount rate	17.90%	19.00%
Equity Securities [Member] | Maximum [Member] | Market pricing [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Price to book value		$ 2.3
Equity Securities [Member] | Weighted Average [Member] | Market comparable companies [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
EBITDA multiple	9	10.3
Discount for lack of marketability		36.60%
Equity Securities [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Discount rate	14.30%	13.70%
Equity Securities [Member] | Weighted Average [Member] | Market pricing [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Price to earnings ratio	$ 10
Price to book value		$ 2
Debt Securities [Member] | Minimum [Member] | Discounted cash flow [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Discount rate	5.00%	6.00%
Risk premium	0.00%	0.00%
Debt Securities [Member] | Minimum [Member] | Market pricing [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Private sale pricing	$ 0.33
Debt Securities [Member] | Maximum [Member] | Discounted cash flow [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Discount rate	33.00%	15.00%
Risk premium	25.00%	28.00%
Debt Securities [Member] | Maximum [Member] | Market pricing [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Private sale pricing	$ 0.57
Debt Securities [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
EBITDA multiple		5.5
Discount rate	9.50%	10.40%
Risk premium	8.40%	9.70%
Debt Securities [Member] | Weighted Average [Member] | Market pricing [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Private sale pricing	$ 0.52	$ 0.57
Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	$ 306.9	$ 607.3
Debt securities	143.3	618.3
Consolidated SIPs [Member] | Level 3 [Member] | Market comparable companies [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	101.9	113.1
Consolidated SIPs [Member] | Level 3 [Member] | Discounted cash flow [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	44.4	24.3
Debt securities	112.7	119.7
Consolidated SIPs [Member] | Level 3 [Member] | Market pricing [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Equity securities	14.4	22.9
Debt securities	$ 22.7	$ 12.6

Consolidated Sponsored Invest69

Consolidated Sponsored Investment Products - Schedule of Financial Instruments of CSIPs not Measured at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2015	Sep. 30, 2014
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents	$ 8,749.7	$ 8,483.3		$ 8,368.1	$ 7,596
Debt	1,044.2	1,401.2
Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents	226.4	236.2
Debt, excluding CLOs	53.4	75
Debt	53.4	682.2
Consolidated SIPs [Member] | CLOs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Debt	0	607.2
Carrying Value [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents	8,523.3	8,247.1
Carrying Value [Member] | Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents	226.4	89.8
Debt, excluding CLOs	53.4	75
Carrying Value [Member] | Consolidated SIPs [Member] | CLOs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Debt	0	607.2
Estimated Fair Value [Member] | Level 1 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents	8,523.3	8,247.1
Estimated Fair Value [Member] | Consolidated SIPs [Member] | Level 1 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Cash and cash equivalents	226.4	89.8
Estimated Fair Value [Member] | Consolidated SIPs [Member] | Level 3 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Debt, excluding CLOs	53.1	74.6
Estimated Fair Value [Member] | Consolidated SIPs [Member] | CLOs [Member] | Fair Value Inputs Level 2 and Level 3 [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Debt	$ 0	$ 594.5	[1]
[1]	1 Substantially all was Level 2.

Consolidated Sponsored Invest70

Consolidated Sponsored Investment Products - Schedule of Debt of CSIPs (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Debt	$ 1,044.2	$ 1,401.2
Effective Interest Rate		9.89%
Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Debt, excluding CLOs	53.4	$ 75
Debt	$ 53.4	$ 682.2
Effective Interest Rate	5.15%	4.79%
Consolidated SIPs [Member] | CLOs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Debt	$ 0	$ 607.2
Effective Interest Rate		2.24%

Consolidated Sponsored Invest71

Consolidated Sponsored Investment Products - Schedule of Contractual Maturities for Debt of CSIPs (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Consolidated Sponsored Investment Products [Line Items]
Total	$ 1,044.2	$ 1,401.2
Consolidated SIPs [Member]
Schedule Of Consolidated Sponsored Investment Products [Line Items]
2,018	5.8
2,019	47.6
Total	$ 53.4	$ 682.2

Consolidated Sponsored Invest72

Consolidated Sponsored Investment Products - Schedule of Redeemable Noncontrolling Interest of CSIPs (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Oct. 01, 2016
Temporary Equity [Line Items]
Balance at beginning of year	$ 61.1	$ 59.6	$ 234.8
Net income (loss)	53	1.6	(6.1)
Net subscriptions and other	17.3	(91.8)	(49)
Net consolidations (deconsolidations)	(9.3)
Balance at End of Year	1,941.9	61.1	59.6
Redeemable Noncontrolling Interests [Member]
Temporary Equity [Line Items]
Net subscriptions and other	884.3	79.9	149.4
Net consolidations (deconsolidations)	$ 118.8	(80)	$ (318.5)
ASU 2015-02 [Member]
Temporary Equity [Line Items]
Adoption of new accounting guidance		$ (325.9)
ASU 2015-02 [Member] | Redeemable Noncontrolling Interests [Member]
Temporary Equity [Line Items]
Adoption of new accounting guidance				$ 824.7

Nonconsolidated Variable Inte73

Nonconsolidated Variable Interest Entities - Narrative (Details) - INDIA $ in Millions	12 Months Ended
	Sep. 30, 2016USD ($)
Variable Interest Entity [Line Items]
Number of SIPs	6
Debt Securities [Member]
Variable Interest Entity [Line Items]
Purchase of debt securities	$ 182.7

Nonconsolidated Variable Inte74

Nonconsolidated Variable Interest Entities Nonconsolidated Variable Interest Entities (Details) - Nonconsolidated VIEs [Member] - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Variable Interest Entity [Line Items]
Maximum exposure to loss	$ 284.9	$ 98.7
Receivables [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	155.6	21.4
Investments [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	$ 129.3	$ 77.3

Taxes on Income - Narrative (De

Taxes on Income - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Tax benefit (shortfall) associated with stock-based compensation plans	$ (8.7)	$ (5.9)	$ 10.9
Reduced rates on income tax expense, amount	$ 28.8	$ 34.2	$ 68.3
Reduced rates on income tax expense, income tax benefits per diluted share	$ 0.05	$ 0.06	$ 0.11
Income Tax Examination [Line Items]
Valuation allowance	$ 0.6	$ (9.4)
Cumulative undistributed foreign earnings	9,000
Accrued interest on uncertain tax positions	10.4	9.6
Unrecognized Tax Benefits, Interest on Income Taxes Expense	1.6	$ (1.3)	$ (6.6)
Estimated decrease in unrecognized tax benefits within the next twelve months	12.6
Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Operating loss carry-forwards	131.4
State [Member]
Income Tax Examination [Line Items]
Operating loss carry-forwards	32.2
Expire between 2019 and 2038 [Member] | Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Operating loss carry-forwards	$ 62.4

Taxes on Income - Schedule of T

Taxes on Income - Schedule of Taxes on Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Federal	$ 585	$ 582.8	$ 733.9
State	65.3	47.5	83.1
Non-U.S.	100.2	102.8	121.1
Deferred expense (benefit)	8.9	9	(14.4)
Total	$ 759.4	$ 742.1	$ 923.7

Taxes on Income - Schedule of I

Taxes on Income - Schedule of Income Before Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
U.S.	$ 1,594.5	$ 1,641.7	$ 2,026.4
Non-U.S.	954.6	858.1	1,002
Total	$ 2,549.1	$ 2,499.8	$ 3,028.4

Taxes on Income - Components of

Taxes on Income - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Deferred Tax Assets
Deferred compensation and employee benefits	$ 60.2	$ 52.9
Stock-based compensation	36.1	36.6
Net operating loss carry-forwards	28.4	32.5
Tax benefit for uncertain tax positions	17.9	19.8
Other	23.9	12.5
Total deferred tax assets	166.5	154.3
Valuation allowance for net operating loss carry-forwards	(25.2)	(24.6)
Deferred tax assets, net of valuation allowance	141.3	129.7
Deferred Tax Liabilities
Goodwill and other purchased intangibles	205.2	202.8
Depreciation on fixed assets	35.3	18
Investments in partnerships	26	17.9
Deferred commissions	15	18.3
Other	14.6	16.5
Total deferred tax liabilities	296.1	273.5
Net Deferred Tax Liability	$ 154.8	$ 143.8

Taxes on Income - Components 79

Taxes on Income - Components of Net Deferred Tax Assets or Liabilities as Classified in the Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Other assets	$ 15.8	$ 17.7
Deferred tax liabilities	170.6	161.5
Net Deferred Tax Liability	$ 154.8	$ 143.8

Taxes on Income - Reconciliatio

Taxes on Income - Reconciliation of the Amount of Tax Expense at the Federal Statutory Rate and Taxes on Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal taxes at statutory rate	$ 892.2	$ 874.9	$ 1,059.9
Federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal tax effect	$ 41.4	$ 42.7	$ 51.6
State taxes, net of federal tax effect rate	1.60%	1.70%	1.70%
Effect of non-U.S. operations	$ (146.2)	$ (153)	$ (148.5)
Effect of non-U.S. operation rate	(5.70%)	(6.10%)	(4.90%)
Effect of net income attributable to noncontrolling interests	$ (32.6)	$ (10.9)	$ (24.3)
Effect of net income attributable to noncontrolling interest rate	(1.30%)	(0.40%)	(0.80%)
Other	$ 4.6	$ (11.6)	$ (15)
Other rate	0.20%	(0.50%)	(0.50%)
Tax Provision	$ 759.4	$ 742.1	$ 923.7
Effective Tax Rate	29.80%	29.70%	30.50%

Taxes on Income - Reconciliat81

Taxes on Income - Reconciliation of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 82.1	$ 105.2	$ 118.2
Additions for tax positions of prior years	6.6	0.6	12.6
Reductions for tax positions of prior years	(1.3)	(9)	(3.4)
Tax positions related to the current year	11.6	12.9	16.2
Settlements with taxing authorities	(5.2)	(5.4)	(0.1)
Expirations of statute of limitations	(12.7)	(22.2)	(38.3)
Balance at End of Year	$ 81.1	$ 82.1	$ 105.2

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Loss Contingencies [Line Items]
Lease expense	$ 56.3	$ 69.3	$ 58
Sublease income	0.4	$ 1.6	$ 1.7
Future minimum rentals to be received under non-cancelable subleases	0.5
Committed capital contributions	73.5
Plaintiff Cryer 401K Plan [Member]
Loss Contingencies [Line Items]
The plaintiff alleges that Plan losses exceed	79
Plaintiff Fernandez 401K Plan [Member]
Loss Contingencies [Line Items]
The plaintiff alleges that Plan losses exceed	$ 60

Commitments and Contingencies83

Commitments and Contingencies - Future Minimum Lease Payments under Long-Term Non-Cancelable Operating Leases (Details) $ in Millions	Sep. 30, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 44.7
2,019	41.1
2,020	35.6
2,021	31.4
2,022	28.4
Thereafter	185.8
Total Minimum Lease Payments	$ 367

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation [Abstract]
Number of shares authorized for issuance under the USIP	120
Number of shares available for grant under USIP	21
Unrecognized compensation expense related to nonvested stock and stock unit awards, net of estimated forfeitures	$ 118.9
Remaining weighted-average vesting period	1 year 7 months 18 days
Weighted-average grant-date fair values of stock awards and stock unit awards granted	$ 34.23	$ 40.88	$ 55.65
Fair value of stock awards and stock unit awards vested	$ 104	$ 92.8	$ 115.2
Total shares issued under ESIP	0.8
Shares reserved for future issuance under ESIP	3.6

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	$ 123.4	$ 131.5	$ 140
Stock and stock unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	117	125.3	133.6
Employee stock investment plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	$ 6.4	$ 6.2	$ 6.4

Stock-Based Compensation - Su86

Stock-Based Compensation - Summary of Nonvested Stock and Stock Unit Award Activity (Details) - $ / shares shares in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested balance at September 30, 2016	3,657
Granted	3,863
Vested	(2,437)
Forfeited/canceled	(539)
Nonvested Balance at September 30, 2017	4,544	3,657
Nonvested beginning balance, Weighted Average Grant Date Fair Value	$ 45.67
Weighted Average Grant Date Fair Value of shares granted	34.23	$ 40.88	$ 55.65
Weighted Average Grant Date Fair Value of shares vested	43.90
Weighted Average Grant Date Fair Value of shares forfeited/canceled	42.86
Nonvested ending balance, Weighted Average Grant Date Fair Value	$ 37.23	$ 45.67
Time-Based Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested balance at September 30, 2016	2,369
Granted	2,739
Vested	(2,082)
Forfeited/canceled	(243)
Nonvested Balance at September 30, 2017	2,783	2,369
Performance-Based Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested balance at September 30, 2016	1,288
Granted	1,124
Vested	(355)
Forfeited/canceled	(296)
Nonvested Balance at September 30, 2017	1,761	1,288

Defined Contribution Plans - Na

Defined Contribution Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Participants annual maximum contribution to defined contribution plan, pre-tax	50.00%
Percentage of annual bonus eligible for defined contribution to plan	100.00%
Expenses recognized for defined contribution plans	$ 45.5	$ 46.8	$ 46.4

Segment and Geographic Inform88

Segment and Geographic Information - Narrative (Details)	12 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Number of operating segments	1

Segment and Geographic Inform89

Segment and Geographic Information - Schedule of Operating Revenues, Property and Equipment by Geographic Areas (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	$ 6,392.2	$ 6,618	$ 7,948.7
Property and Equipment, Net	517.2	523.2	510.1
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	3,898.4	4,063.6	4,634.2
Property and Equipment, Net	426.1	428	406.9
Luxembourg [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	1,652.8	1,707.9	2,278.6
Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	281	267.9	311.8
Property and Equipment, Net	60.2	62.9	68.9
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	260.8	273.8	339
Property and Equipment, Net	5.3	3.1	4.5
The Bahamas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	205.9	204.6	250.2
Property and Equipment, Net	13.4	14.3	14.6
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and Equipment, Net	12.2	14.9	14.8
Europe, the Middle East and Africa, excluding Luxembourg [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	83.2	94	126.8
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenues	10.1	6.2	8.1
Property and Equipment, Net	$ 0	$ 0	$ 0.4

Other Income (Expenses) - Narra

Other Income (Expenses) - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Other Income and Expenses [Abstract]
Proceeds from the sale of available-for-sale securities	$ 51.6	$ 269.4	$ 221.3
Net gains (losses) recognized on trading investment securities	5	27.9	(20.3)
Net gains (losses) recognized on trading investment securities of consolidated SIPs	$ 21.9	$ 9.4	$ (17.7)

Other Income (Expenses) - Sched

Other Income (Expenses) - Schedule of Other Income (Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Other Income and Expenses [Abstract]
Dividend income	$ 13.9	$ 20.6	$ 10.3
Interest income	74.9	36.5	10.8
Gains (losses) on trading investment securities, net	12.2	50.1	(22.3)
Realized gains on sale of investment securities, available-for-sale	5.6	32.1	28.1
Realized losses on sale of investment securities, available-for-sale	(1.6)	(3.2)	(4)
Income (losses) from investments in equity method investees	107.9	56.7	(63.2)
Other-than-temporary impairment of investments	(0.8)	(11.1)	(10)
Gains (losses) on investments of consolidated SIPs, net	118.2	(13.5)	18
Foreign currency exchange gains (losses), net	(16)	(2.9)	57
Other, net	22	18.7	15.7
Total	336.3	184	40.4
Interest Expense	(51.5)	(49.9)	(39.6)
Other Income, Net	$ 284.8	$ 134.1	$ 0.8

Accumulated Other Comprehensi92

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Oct. 01, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (347.4)	$ (314.2)
Other comprehensive income (loss) before reclassifications, net of tax	74	(18)
Reclassifications to net investment and other income, net of tax	(4.3)	(15.2)
Total other comprehensive income (loss)	69.7	(33.2)	$ (196.5)
Balance at end of period	(284.8)	(347.4)	(314.2)
Unrealized Gains on Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	6.8	19.3
Other comprehensive income (loss) before reclassifications, net of tax	6.5	2.7
Reclassifications to net investment and other income, net of tax	(4.3)	(15.2)
Total other comprehensive income (loss)	2.2	(12.5)
Balance at end of period	2.2	6.8	19.3
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(346.1)	(327.8)
Other comprehensive income (loss) before reclassifications, net of tax	65.4	(18.3)
Reclassifications to net investment and other income, net of tax	0	0
Total other comprehensive income (loss)	65.4	(18.3)
Balance at end of period	(281)	(346.1)	(327.8)
Unrealized Losses on Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(8.1)	(5.7)
Other comprehensive income (loss) before reclassifications, net of tax	2.1	(2.4)
Reclassifications to net investment and other income, net of tax	0	0
Total other comprehensive income (loss)	2.1	(2.4)
Balance at end of period	(6)	(8.1)	(5.7)
Other equity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss)	$ 69.7	(33.2)	$ (196.5)
ASU 2015-02 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Adoption of new accounting guidance		$ (325.9)
ASU 2015-02 [Member] | Unrealized Gains on Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Adoption of new accounting guidance				$ (6.8)
ASU 2015-02 [Member] | Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Adoption of new accounting guidance				(0.3)
ASU 2015-02 [Member] | Unrealized Losses on Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Adoption of new accounting guidance				0
ASU 2015-02 [Member] | Other equity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Adoption of new accounting guidance				$ (7.1)