v2.4.0.8

Derivative and Hedging Activities - Derivative Instruments Table (Details) (USD $) In Millions, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Derivative [Line Items] |  |
Fair Value | $ (755) | $ (551)
Natural Gas [Member] |  |
Derivative [Line Items] |  |
Volume, Energy Measurement | 949,000,000,000,000 | 1,009,000,000,000,000
Fair Value | (278) | (237)
Natural Gas [Member] | Swap [Member] |  |
Derivative [Line Items] |  |
Volume, Energy Measurement | 293,000,000,000,000 | 448,000,000,000,000
Fair Value | (75) | (23)
Natural Gas [Member] | Three Way Collar [Member] |  |
Derivative [Line Items] |  |
Volume, Energy Measurement | 335,000,000,000,000 | 288,000,000,000,000
Fair Value | (27) | (7)
Natural Gas [Member] | Collar [Member] |  |
Derivative [Line Items] |  |
Volume, Energy Measurement | 22,000,000,000,000 | 0
Fair Value | 4 | 0
Natural Gas [Member] | Call Option [Member] |  |
Derivative [Line Items] |  |
Volume, Energy Measurement | 193,000,000,000,000 | 193,000,000,000,000
Fair Value | (195) | (210)
Natural Gas [Member] | Swaption [Member] |  |
Derivative [Line Items] |  |
Volume, Energy Measurement | 0 | 12,000,000,000,000
Fair Value | 0 | 0
Natural Gas [Member] | Basis Swap [Member] |  |
Derivative [Line Items] |  |
Volume, Energy Measurement | 106,000,000,000,000 | 68,000,000,000,000
Fair Value | 15 | 3
Crude Oil [Member] |  |
Derivative [Line Items] |  |
Volume, Volume Measurement | 61,800,000 | 68,200,000
Fair Value | (477) | (314)
Crude Oil [Member] | Swap [Member] |  |
Derivative [Line Items] |  |
Volume, Volume Measurement | 18,300,000 | 25,300,000
Fair Value | (146) | (50)
Crude Oil [Member] | Three Way Collar [Member] |  |
Derivative [Line Items] |  |
Volume, Volume Measurement | 4,400,000 | 0
Fair Value | (12) | 0
Crude Oil [Member] | Call Option [Member] |  |
Derivative [Line Items] |  |
Volume, Volume Measurement | 38,900,000 | 42,500,000
Fair Value | (320) | (265)
Crude Oil [Member] | Basis Swap [Member] |  |
Derivative [Line Items] |  |
Volume, Volume Measurement | 200,000 | 400,000
Fair Value | $ 1 | $ 1

X
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X
- Definition Volume, Volume Measurement + References No definition available. + Details
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X
- Definition Fair value as of the balance sheet date of price risk derivative assets, net of price risk derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13495-108611 + Details
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