Assets Held for Sale and Discontinued Operations (Details 2) (USD $)	3 Months Ended								6 Months Ended	12 Months Ended									12 Months Ended				12 Months Ended		1 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Oil and gas	Dec. 31, 2012 Oil and gas	Dec. 31, 2011 Oil and gas	Dec. 31, 2011 Oil and gas Remora	Dec. 31, 2012 Oil and gas Sabine	Dec. 31, 2013 Oil and gas Canada	Dec. 31, 2013 Rig Services	Dec. 31, 2012 Rig Services	Dec. 31, 2011 Rig Services	Apr. 30, 2013 Rig Services	Dec. 31, 2012 Rig Services Aircraft logistics assets	Dec. 31, 2011 Rig Services Aircraft logistics assets	Oct. 31, 2013 Rig Services Peak
Discontinued operations
Long-term deferred income taxes																		$ 15,000,000
Undiscounted contractual commitments	171,200,000									171,200,000
Liability related to discontinue operation	113,600,000				206,000,000					113,600,000	206,000,000
Current liability to discontinued operations	64,404,000				68,961,000					64,404,000	68,961,000
Operating revenues
Operating revenues													25,327,000	27,363,000	125,654,000				127,154,000	172,335,000	76,584,000
Income (loss) from discontinued operations
Income (loss) from discontinued operations													(17,371,000)	(3,958,000)	18,880,000				17,680,000	9,846,000	458,000
Less: Impairment charges or other (gains) and losses on sale of wholly owned assets													24,087,000	106,096,000	208,455,000				(4,368,000)	9,087,000	8,800,000
Less: Income tax expense (benefit)													(14,062,000)	(44,021,000)	(98,181,000)				5,831,000	2,252,000	(2,135,000)
Income (loss) from discontinued operations, net of tax	23,113,000	(14,430,000)	(26,873,000)	7,011,000	(103,414,000)	12,155,000	26,710,000	(2,977,000)		(11,179,000)	(67,526,000)	(97,601,000)	(27,396,000)	(66,033,000)	(91,394,000)				16,217,000	(1,493,000)	(6,207,000)
Earnings (losses) from unconsolidated affiliates	(1,600,000)	(2,600,000)	1,400,000	2,900,000	1,200,000	(99,500,000)	(156,063,000)	(34,321,000)	(190,384,000)	39,000	(288,718,000)	85,448,000		(289,199,000)	88,486,000	83,000,000
Write own of carrying value of assets offset by gain of future pipeline obligations													61,500,000
Increase in pipeline contractual commitments														128,100,000
Write own of carrying value of assets															255,000,000
Ownership percentage																	49.70%
Gross cash proceeds													90,000,000			303,800,000	254,500,000
Impairment of long-lived assets										20,000,000	50,355,000												7,800,000	7,900,000
Sale price																						9,300,000
Cash proceeds from sale of businesses in Alaska																									$ 135,500,000