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Segment Information (Schedule Of Long-Lived Assets By Geographical Segment) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Long-lived Assets	$ 10,919.3	$ 11,087.8	$ 12,534.8
Geographic Areas [Member]
Segment Reporting Information [Line Items]
Long-lived Assets	10,919.3	11,087.8	12,534.8
Geographic Areas [Member] | United States [Member]
Segment Reporting Information [Line Items]
Long-lived Assets	2,898.3	4,731.8	5,240.4
Geographic Areas [Member] | SPAIN
Segment Reporting Information [Line Items]
Long-lived Assets	2,334.5	757.0	0.0
Geographic Areas [Member] | SINGAPORE
Segment Reporting Information [Line Items]
Long-lived Assets	1,388.4	832.9	126.7
Geographic Areas [Member] | Angola [Member]
Segment Reporting Information [Line Items]
Long-lived Assets	821.7	1,471.1	1,913.5
Geographic Areas [Member] | United Kingdom [Member]
Segment Reporting Information [Line Items]
Long-lived Assets	409.0	462.4	982.0
Geographic Areas [Member] | Brazil [Member]
Segment Reporting Information [Line Items]
Long-lived Assets	187.4	210.8	1,459.0
Geographic Areas [Member] | Other countries [Member]
Segment Reporting Information [Line Items]
Long-lived Assets	$ 2,880.0	$ 2,621.8	$ 2,813.2

X

- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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(14))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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