Fair Value Disclosures (Narrative) (Details) (Private Equity and Similar Investments [Member])	9 Months Ended
Sep. 30, 2013 Multiple Yr
Private Equity and Similar Investments [Member]
Weighted average remaining life of private equity and similar investments, in years	3
Fair value inputs earnings before interest taxes depreciation and amortization multiple lower range	2
Fair value inputs earnings before interest taxes depreciation and amortization multiple upper range	10
Fair value inputs earnings before interest taxes depreciation and amortization multiple weighted average	7

Market valuation shown as a multiple of earnings before interest, taxes, depreciation and amortization (EBITA), weighted average. This represents a significant unobservable input used to determine fair value.

No definition available.

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