XML 136 R119.htm IDEA: XBRL DOCUMENT v3.3.0.814
Goodwill and Intangibles, including DAC and VOBA, net - Summary of Amortization Expense of Definite Lived Intangible Assets (Detail) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangibles $ 129.6 $ 179.2 $ 260.1
Finite-Lived Intangible Assets, Amortization Expense, Year Two 93.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 93.9    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 86.2    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 85.1    
Finite-Lived Intangible Assets, Amortization Expense, Year Five 84.9    
Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangibles 87.8 81.7 77.8
VOBA      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangibles 21.8 $ 55.8 $ 137.0
Finite-Lived Intangible Assets, Amortization Expense, Year Two 35.3    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 40.6    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 28.4    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 23.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 18.5