Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net revenues:
Contracting services	$ 165,861	$ 196,676	$ 288,609	$ 307,531
Oil and gas	172,458	102,586	341,317	193,301
Total net revenues	338,319	299,262	629,926	500,832
Cost of sales:
Contracting services	116,521	140,126	223,428	226,374
Oil and gas	98,879	94,092	206,503	172,446
Oil and gas property impairments	22,721	159,862	22,721	170,974
Total cost of sales	238,121	394,080	452,652	569,794
Gross profit (loss)	100,198	(94,818)	177,274	(68,962)
Gain on oil and gas derivative contracts	0	2,482	0	2,482
Gain (loss) on sale or acquisition of assets, net	(22)	(14)	(6)	6,233
Selling and administrative expenses	(23,758)	(24,546)	(48,739)	(65,047)
Income (loss) from operations	76,418	(116,896)	128,529	(125,294)
Equity in earnings of investments	5,887	1,656	11,537	6,711
Gain on sale of Cal Dive common stock			753	0
Net interest expense	(25,278)	(20,523)	(49,514)	(36,158)
Other income (expense)	1,253	(1,676)	3,160	(7,261)
Income (loss) before income taxes	58,280	(137,439)	94,465	(162,002)
Provision (benefit) for income taxes	16,171	(52,366)	25,721	(59,927)
Net income (loss), including noncontrolling interests	42,109	(85,073)	68,744	(102,075)
Less net income applicable to noncontrolling interests	(786)	(444)	(1,554)	(1,273)
Net income (loss) applicable to Helix	41,323	(85,517)	67,190	(103,348)
Preferred stock dividends	(10)	(34)	(20)	(94)
Net income (loss) applicable to Helix common shareholders	$ 41,313	$ (85,551)	$ 67,170	$ (103,442)
Earnings (loss) per share of common stock:
Basic	$ 0.39	$ (0.82)	$ 0.63	$ (1.00)
Diluted	$ 0.39	$ (0.82)	$ 0.63	$ (1.00)
Weighted average common shares outstanding:
Basic	104,673	104,125	104,573	103,610
Diluted	105,140	104,125	105,024	103,610