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Property And Equipment (Schedule Of Property And Equipment) (Details) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
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Property, Plant and Equipment [Line Items] |  |
Property and equipment | $ 12,719.4 | $ 14,975.5
Drilling rigs and equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment | 11,001.8 | 13,253.2
Other [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment | 180.0 | 135.0
Work in progress [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment | $ 1,537.6 | $ 1,587.3

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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