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Network
2433402 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details)
(http://www.franklinresources.com/role/AccumulatedOtherComprehensiveIncomeLossChangesInAccumulatedOtherComprehensiveIncomeLossByComponentDetails)
TableAccumulated Other Comprehensive Income (Loss) [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000038777 (http://www.sec.gov/CIK)
Accumulated Other Comprehensive Income (Loss) [Line Items]Period [Axis]
2015-10-01 - 2016-09-30
2014-10-01 - 2015-09-30
2013-10-01 - 2014-09-30
Equity Components [Axis]Equity Components [Axis]Equity Components [Axis]
Unrealized Gains on Investments [Member]Currency Translation Adjustments [Member]Unrealized Losses on Defined Benefit Plans [Member]Equity Component [Domain]Unrealized Gains on Investments [Member]Currency Translation Adjustments [Member]Unrealized Losses on Defined Benefit Plans [Member]Equity Component [Domain]Unrealized Gains on Investments [Member]Currency Translation Adjustments [Member]Unrealized Losses on Defined Benefit Plans [Member]Equity Component [Domain]
Balance at beginning of period
19,300,000  
(327,800,000) 
(5,700,000) 
(314,200,000) 
31,000,000  
(143,600,000) 
(5,100,000) 
(117,700,000) 
    
Other comprehensive income (loss) before reclassifications, net of tax
2,700,000  
(18,300,000) 
(2,400,000) 
(18,000,000) 
1,400,000  
(184,200,000) 
(600,000) 
(183,400,000) 
    
Reclassifications to net investment and other income, net of tax
(15,200,000) 
0  
0  
(15,200,000) 
(13,100,000) 
0  
0  
(13,100,000) 
    
Total other comprehensive loss
(12,500,000) 
 
(18,300,000) 
 
(2,400,000) 
 
(33,200,000) 
 
(11,700,000) 
 
(184,200,000) 
 
(600,000) 
 
(196,500,000) 
 
 
 
 
 
 
 
(123,800,000) 
 
Balance at end of period
6,800,000  
 
(346,100,000) 
 
(8,100,000) 
 
(347,400,000) 
 
19,300,000  
 
(327,800,000) 
 
(5,700,000) 
 
(314,200,000) 
 
31,000,000  
 
(143,600,000) 
 
(5,100,000) 
 
(117,700,000)