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Business and Basis of Presentation Correction of an Error in Prior Periods (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Operating Revenue | $ 474 | $ 335 | $ 930 | $ 623
Operating income (loss) | 5 | (146) | 12 | (127)
Provision (benefit) for income taxes | 0 | (157) | (1) | (158)
Net (loss) | (85) | (69) | (167) | (128)
Comprehensive income (loss) | (83) | (76) | (163) | (134)
Provision for deferred income taxes |  |  | (5) | (160)
Accounts payable and accrued liabilities |  |  | (41) | 5
Net cash provided by operating activities |  |  | 202 | 139
Basic and diluted (loss) per common share ($ per share) | $ (4.93) | $ (4.58) | $ (9.67) | $ (10.12)
Scenario, Previously Reported [Member] |  |  |  |
Operating Revenue |  | 345 |  | 633
Operating income (loss) |  | (136) |  | (117)
Provision (benefit) for income taxes |  | (148) |  | (149)
Net (loss) |  | (68) |  | (127)
Comprehensive income (loss) |  | (75) |  | (133)
Provision for deferred income taxes |  |  |  | (151)
Accounts payable and accrued liabilities |  |  |  | (5)
Net cash provided by operating activities |  |  |  | 139
Basic and diluted (loss) per common share ($ per share) |  | $ (4.56) |  | $ (10.08)
Restatement Adjustment [Member] |  |  |  |
Operating Revenue |  | (10) |  | (10)
Operating income (loss) |  | (10) |  | (10)
Provision (benefit) for income taxes |  | (9) |  | (9)
Net (loss) |  | (1) |  | (1)
Comprehensive income (loss) |  | (1) |  | (1)
Provision for deferred income taxes |  |  |  | (9)
Accounts payable and accrued liabilities |  |  |  | 10
Net cash provided by operating activities |  |  |  | $ 0
Basic and diluted (loss) per common share ($ per share) |  | $ (0.02) |  | $ (0.04)

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=16317811 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 + Details
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