Segment Information (Schedule Of Segment Reporting Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Revenues	$ 1,178,247	$ 1,179,665	$ 1,243,319	$ 966,837	$ 562,400	$ 537,042	$ 479,893	$ 384,997	$ 4,568,068	$ 1,964,332	$ 1,563,043
Cost of services (exclusive of items shown separately below)	722,814	708,608	711,284	546,767	293,596	285,124	250,667	217,022	2,689,473	1,046,409	848,492
Depreciation, depletion, amortization and accretion	143,009	128,160	135,516	102,596	67,264	61,807	60,020	55,824	509,281	244,915	208,097
General and administrative expenses									662,792	376,619	332,602
Income from operations									706,522	296,389	173,852
Interest expense, net									(117,682)	(72,994)	(56,480)
Interest income									3,170	6,226	5,135
Other income									853	(822)	825
Earnings (losses) from equity-method investments, net									(287)	16,394	8,245
Gain loss from Equity method investment									17,880
Gains (Losses) on Extinguishment of Debt									(2,294)
Income (loss) from continuing operations before income taxes									608,162	245,193	131,577
Identifiable Assets	7,802,886				4,048,145				7,802,886	4,048,145
Drilling Products And Services [Member]
Segment Reporting Information [Line Items]
Revenues									775,066	611,101	474,707
Cost of services (exclusive of items shown separately below)									255,853	220,647	176,463
Depreciation, depletion, amortization and accretion									150,687	130,809	114,733
General and administrative expenses									131,798	122,201	108,845
Income from operations									236,728	137,444	74,666
Income (loss) from continuing operations before income taxes									236,728	137,444	74,666
Identifiable Assets	1,086,804				947,679				1,086,804	947,679	802,785
Capital Expenditures									246,389	219,121	142,942
Onshore Completion Services [Member]
Segment Reporting Information [Line Items]
Revenues									1,593,977
Cost of services (exclusive of items shown separately below)									1,039,732
Depreciation, depletion, amortization and accretion									171,852
General and administrative expenses									185,917	3,226
Income from operations									196,476	(3,226)
Income (loss) from continuing operations before income taxes									196,476	(3,226)
Identifiable Assets	3,223,984				560,246				3,223,984	560,246
Capital Expenditures									308,317
Production Services [Member]
Segment Reporting Information [Line Items]
Revenues									1,510,990	788,568	560,606
Cost of services (exclusive of items shown separately below)									929,552	443,381	326,155
Depreciation, depletion, amortization and accretion									135,910	66,825	56,120
General and administrative expenses									211,293	135,180	113,738
Income from operations									234,235	143,182	64,593
Income (loss) from continuing operations before income taxes									234,235	143,182	64,593
Identifiable Assets	2,185,779				1,140,724				2,185,779	1,140,724	714,140
Capital Expenditures									334,670	173,562	56,089
Subsea And Technical Solutions [Member]
Segment Reporting Information [Line Items]
Revenues									688,035	564,663	527,730
Cost of services (exclusive of items shown separately below)									464,336	382,381	345,874
Depreciation, depletion, amortization and accretion									50,832	47,281	37,244
General and administrative expenses									133,784	116,012	110,019
Income from operations									39,083	18,989	34,593
Interest income									2,816	4,542	4,548
Other income										105
Income (loss) from continuing operations before income taxes									41,899	23,636	39,141
Identifiable Assets	1,295,134				1,162,580				1,295,134	1,162,580	1,055,673
Capital Expenditures									279,729	112,504	94,224
Unallocated [Member]
Segment Reporting Information [Line Items]
Interest expense, net									(117,682)	(72,994)	(56,480)
Interest income									354	1,684	587
Other income									853	(927)	825
Earnings (losses) from equity-method investments, net									(287)	16,394	8,245
Gain loss from Equity method investment									17,880
Gains (Losses) on Extinguishment of Debt									(2,294)
Income (loss) from continuing operations before income taxes									(101,176)	(55,843)	(46,823)
Identifiable Assets	$ 11,185				$ 72,472				$ 11,185	$ 72,472	$ 79,052