Fair Value Fair Value (Narrative) (Details)	Sep. 30, 2012
Fair Value Disclosures [Abstract]
Fair Value, Measurement with Unobservable Inputs, Assets, Percent of Total Financial Assets	6.00%
Fair Value, Measurement with Unobservable Inputs, Liabilities, Percent of Total Financial Liabilities	2.00%
Percent of Level 3 Portfolio Priced Using Non-Binding Broker Quotes	95.00%
Percent of Level 3 Portfolio Priced Using Internal Model Pricing	5.00%