Other Commitments And Contingencies (Existence and Expiration of Commercial Commitments) (Details) $ in Millions |
Sep. 30, 2015
USD ($)
|
|---|---|
| Guarantee of Indebtedness of Others [Member] | |
| Other Commitments and Contingencies [Line Items] | |
| Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2,750.0 |
| Guarantee Obligations Maximum Exposure Year One | 0.0 |
| Guarantee Obligations Maximum Exposure Year Two | 0.0 |
| Guarantee Obligations Maximum Exposure Year Three | 0.0 |
| Guarantee Obligations Maximum Exposure Year Four | 500.0 |
| Guarantee Obligations Maximum Exposure Year Five | 0.0 |
| Guarantee Obligations Maximum Exposure Thereafter | 2,250.0 |
| Line of Credit [Member] | |
| Other Commitments and Contingencies [Line Items] | |
| Line of Credit | $ 20.0 |