Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details 2)

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Fair Value Measurements (Details 2) (USD $)
In Millions
9 Months Ended
Jun. 30, 2011
Forethought Note
 
Reconciliation of changes in level 3 financial assets  
Balance at the beginning of the period $ 127.0
Total gains (losses) :  
Change in fair value 24.2
Purchases, issuances, and settlements (151.2)
Equity Investments
 
Reconciliation of changes in level 3 financial assets  
Balance at the beginning of the period 3.0
Total gains (losses) :  
Transfers in (out) of Level 3 (2.0)
Balance at the end of the period $ 1.0