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Debt And Related Expenses (Schedule Of Debt Instruments and Balances) (Parenthetical) (Details) - 7.50% due September 15, 2027 [Member] - Ocean Energy [Member] $ in Millions | 1 Months Ended
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Apr. 30, 2003 USD ($)
Debt Instrument [Line Items] |
Fair value of notes assumed | $ 169
Effective interest rate of notes | 6.50%

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