Commitments And Contingencies Unsecured Creditors Litigation (Details) - Pending Litigation - Unsecured Creditors Litigation |
12 Months Ended |
|---|---|
|
Dec. 31, 2015
USD ($)
| |
| Loss Contingencies [Line Items] | |
| Loss Contingency, Damages Sought, Value Per Unit in Excess of Benchmark | $ 32.50 |
| Loss Contingency, Damages Sought, Unit in Excess of Benchmark | 67.50 |
| Loss Contingency, Range of Possible Loss, Maximum | 300,000,000 |
| Loss Contingency Accrual | 0 |
| Litigation, Damages Benchmark, Fourth LLP Agreement | |
| Loss Contingencies [Line Items] | |
| Cumulative Distributions Threshold | $ 7,200,000,000 |