|
Risk Management Fair Value of Derivative Contracts (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2013
|
Dec. 31, 2012
|
|
| Derivatives, Fair Value [Line Items] | ||
| Netting Agreement Impact, Credit Risk Derivatives | $ 33 | $ 38 |
| Amount the adjustment to fair value of debt was increased by related to the fair value of interest rate swaps | 576 | 664 |
| Amount the fair value of debt adjustment was decreased by related to unamortized debt discounts | 36 | 33 |
| Asset derivatives | 657 | 772 |
| Derivative Liability, Fair Value, Net | (220) | (213) |
| Unamortized premium | 478 | 490 |
| Amortization period of unamortized premium | 18 years | |
|
Designated as Hedging Contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 635 | 747 |
| Derivative Liability, Fair Value, Net | (56) | (30) |
|
Not Designated as Hedging Contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 22 | 25 |
| Derivative Liability, Fair Value, Net | (164) | (183) |
|
Commodity Contract [Member] | Designated as Hedging Contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 56 | 82 |
| Derivative Liability, Fair Value, Net | (53) | (29) |
|
Commodity Contract [Member] | Designated as Hedging Contracts [Member] | Current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 19 | 42 |
|
Commodity Contract [Member] | Designated as Hedging Contracts [Member] | Other Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | (45) | (18) |
|
Commodity Contract [Member] | Designated as Hedging Contracts [Member] | Non-current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 37 | 40 |
|
Commodity Contract [Member] | Designated as Hedging Contracts [Member] | Non Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | (8) | (11) |
|
Commodity Contract [Member] | Not Designated as Hedging Contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 7 | 4 |
| Derivative Liability, Fair Value, Net | (4) | (4) |
|
Commodity Contract [Member] | Not Designated as Hedging Contracts [Member] | Current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 7 | 4 |
|
Commodity Contract [Member] | Not Designated as Hedging Contracts [Member] | Other Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | (4) | (3) |
|
Commodity Contract [Member] | Not Designated as Hedging Contracts [Member] | Non-current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 0 | |
| Derivative Liability, Fair Value, Net | 0 | |
|
Commodity Contract [Member] | Not Designated as Hedging Contracts [Member] | Non Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | 0 | (1) |
|
Power Derivative Contract [Member] | Not Designated as Hedging Contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 15 | 21 |
| Derivative Liability, Fair Value, Net | (160) | (179) |
|
Power Derivative Contract [Member] | Not Designated as Hedging Contracts [Member] | Current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 6 | 8 |
|
Power Derivative Contract [Member] | Not Designated as Hedging Contracts [Member] | Other Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | (55) | (59) |
|
Power Derivative Contract [Member] | Not Designated as Hedging Contracts [Member] | Non-current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 9 | 13 |
|
Power Derivative Contract [Member] | Not Designated as Hedging Contracts [Member] | Non Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | (105) | (120) |
|
Interest Rate Swap [Member] | Designated as Hedging Contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 579 | 665 |
| Derivative Liability, Fair Value, Net | (3) | (1) |
|
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Contracts [Member] | Current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 7 | 9 |
|
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Contracts [Member] | Other Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | 0 | 0 |
|
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Contracts [Member] | Non-current-Fair value of derivative contracts [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Asset derivatives | 572 | 656 |
|
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Contracts [Member] | Non Current Liabilities [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Derivative Liability, Fair Value, Net | (3) | (1) |
|
Kinder Morgan Energy Partners, L.P. [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Margin Deposit Assets | $ 21 | $ 5 |