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Derivatives and Hedging (Details 2)
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12 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||
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Dec. 31, 2011
USD ($)
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Dec. 31, 2012
Nondesignated
Interest rate swaps
USD ($)
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Dec. 31, 2011
Nondesignated
Interest rate swaps
USD ($)
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Dec. 31, 2012
Nondesignated
Interest rate swaps
Interest expense, net of amounts capitalized
USD ($)
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Dec. 31, 2012
Nondesignated
Embedded derivatives
Other long-term liabilities
USD ($)
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Sep. 28, 2011
Nondesignated
Forward exchange contract
USD ($)
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Dec. 31, 2011
Nondesignated
Forward exchange contract
Other, net
USD ($)
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Dec. 31, 2011
Nondesignated
Forward exchange contract
Receive
NOK
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Dec. 31, 2011
Nondesignated
Forward exchange contract
Pay
USD ($)
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Dec. 31, 2011
Nondesignated
Forward exchange contract
Cash flow hedges
NOK
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Dec. 31, 2013
Shelf Drilling
USD ($)
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Dec. 31, 2013
Shelf Drilling
Nondesignated
item
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| Effect on statement of operations resulting from changes in the fair values of derivatives designated as cash flow hedges | ||||||||||||
| Cash payment for termination of other undesignated derivative instruments | $ 14,000,000 | $ 15,000,000 | ||||||||||
| Aggregate notional amount | 6,100,000,000 | 1,100,000,000 | ||||||||||
| Exchange rate of forward contract (in NOK per dollar) | 5.40 | |||||||||||
| Payment for settlement of hedging instruments | 78,000,000 | 78,000,000 | ||||||||||
| Non-cash proceeds in the form of preference shares received in connection with sale transactions | 195,000,000 | |||||||||||
| Number of embedded derivatives | 2 | |||||||||||
| Derivatives at fair value | 2,000,000 | |||||||||||
| Loss associated with undesignated forward exchange contract | $ (1,000,000) | $ (78,000,000) | ||||||||||