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Acquisition Of Pride International, Inc. (Schedule Of Business Acquisition, Provisional Amounts Recorded For Assets Acquired And Liabilities Assumed) (Details) (USD $)
In Millions
Sep. 30, 2011
Business Acquisition [Line Items] 
Gross contractual amounts receivable$ 394.7
Amounts Recognized As Of Merger Date [Member]
 
Business Acquisition [Line Items] 
Cash and cash equivalents147.0
Accounts receivable371.3[1]
Other current assets150.9
Property and equipment6,758.8
Other assets343.7
Accounts payable and accrued liabilities and other539.8
Debt2,436.0
Deferred income tax liabilities19.0
Other liabilities319.8
Net assets acquired4,457.1
Less merger consideration7,415.9
Goodwill2,958.8
Measurement Period Adjustments [Member]
 
Business Acquisition [Line Items] 
Accounts payable and accrued liabilities and other2.1[2]
Other liabilities(1.0)[2]
Net assets acquired(1.1)[2]
Goodwill1.1[2]
Estimated Fair Value [Member]
 
Business Acquisition [Line Items] 
Cash and cash equivalents147.0
Accounts receivable371.3[1]
Other current assets150.9
Property and equipment6,758.8
Other assets343.7
Accounts payable and accrued liabilities and other541.9
Debt2,436.0
Deferred income tax liabilities19.0
Other liabilities318.8
Net assets acquired4,456.0
Less merger consideration7,415.9
Goodwill$ 2,959.9
[1]Gross contractual amounts receivable totaled $394.7 million as of the Merger Date.
[2] The measurement period adjustments reflect changes in the estimated fair values of certain liabilities, including contingencies and income taxes. The measurement period adjustments were recorded to reflect new information obtained about facts and circumstances existing as of the Merger Date and did not result from intervening events subsequent to the Merger Date. These adjustments did not have a material impact on the Company's previously reported results of operations or financial position subsequent to the Merger Date and, therefore, the Company has not retrospectively adjusted its consolidated financial statements.