|
Commitments and Contingencies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Commitments and Contingencies [Line Items] | |||
| Guarantor Obligations, Current Carrying Value | $ 4 | ||
| Outstanding claims related to guarantees | 0 | ||
| Royalty Expense | 27 | 22 | 22 |
|
LTSA [Member]
|
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| Unrecorded Unconditional Purchase Obligation | |||
| Unrecorded Unconditional Purchase Obligation | 134 | ||
| Term of Unrecorded Unconditional Purchase Obligation Lower Limit | P1Y | ||
| Term of Unrecorded Unconditional Purchase Obligation Upper Limit | P12Y | ||
|
Electric Generation Equipment [Member]
|
|||
| Commitments and Contingencies [Line Items] | |||
| Operating Leases, Rent Expense, Net | 47 | 51 | 53 |
|
Office Equipment [Member]
|
|||
| Commitments and Contingencies [Line Items] | |||
| Operating Leases, Rent Expense, Net | $ 12 | $ 12 | $ 13 |