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Commitments And Contingencies And Other Matters (Narrative) (Details) (USD $)			1 Months Ended			1 Months Ended		9 Months Ended		1 Months Ended	9 Months Ended	1 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013 Q7000 [Member]	Sep. 30, 2014 Q7000 [Member]	Sep. 30, 2014 Q5000 [Member]	Mar. 31, 2012 Q5000 [Member] Shipyard [Member]	Sep. 30, 2014 Q5000 [Member] Shipyard [Member]	Sep. 30, 2014 Monohull Vessels [Member] property	Sep. 30, 2014 Topside Equipment [Member]	Sep. 30, 2013 Contract Signing [Member] Q7000 [Member]	Sep. 30, 2014 Contract Signing [Member] Q7000 [Member]	Sep. 30, 2013 Vessel Delivery [Member] Q7000 [Member]
Commitments And Contingencies [Line Items]
Long-term purchase commitment			$ 346,000,000			$ 386,500,000
Property and equipment	2,129,058,000	1,963,706,000		95,700,000	282,000,000		231,900,000		31,000,000
Payments to acquire property, plant, and equipment											$ 69,200,000
Long-term purchase commitment percentage										20.00%		80.00%
Number of vessels under construction								2

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The percentage due of the amount the entity agreed to spend under the long-term purchase commitment.

+ References

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Number of Vessels Under Construction

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The minimum amount the entity agreed to spend under the long-term purchase commitment.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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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

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