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Condensed Consolidated Guarantor And Non-Guarantor Financial Information (Schedule Of Condensed Consolidating Statements Of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Net income (loss), including noncontrolling interests | $ 66,526 | $ 26,635
Other adjustments | 67,279 | 58,430
Net cash provided by operating activities | 133,805 | 85,065
Capital expenditures | (101,744) | (34,488)
Distributions from equity investments, net | 5,943 | 480
Proceeds from sale of Cal Dive common stock |  | 3,588
Decrease (increase) in restricted cash | 922 | 613
Net cash used in investing activities | (94,879) | (29,807)
Borrowings of debt | 400,000 |
Repayments of debt | (356,604) | (3,376)
Deferred financing costs | (6,337) |
Repurchases of common stock | (991) | (927)
Excess tax benefit from stock-based compensation | (340) | (969)
Exercise of stock options, net and other | 381 | (70)
Net cash used in financing activities | 36,109 | (5,342)
Effect of exchange rate changes on cash and cash equivalents | (1,051) | (470)
Net (decrease) increase in cash and cash equivalents | 73,984 | 49,446
Balance, beginning of year | 546,465 | 391,085
Balance, end of period | 620,449 | 440,531
Helix [Member] |  |
Net income (loss), including noncontrolling interests | 65,706 | 25,815
Equity in earnings of affiliates | (93,250) | (48,107)
Other adjustments | 15,685 | (16,484)
Net cash provided by operating activities | (11,859) | (38,776)
Capital expenditures | (896) | (7,143)
Proceeds from sale of Cal Dive common stock |  | 3,588
Net cash used in investing activities | (896) | (3,555)
Borrowings of debt | 400,000 |
Repayments of debt | (354,195) | (1,082)
Deferred financing costs | (6,337) |
Repurchases of common stock | (991) | (927)
Excess tax benefit from stock-based compensation | (340) | (969)
Exercise of stock options, net and other | 381 | 590
Intercompany financing | 45,040 | 93,799
Net cash used in financing activities | 83,558 | 91,411
Net (decrease) increase in cash and cash equivalents | 70,803 | 49,080
Balance, beginning of year | 495,484 | 376,434
Balance, end of period | 566,287 | 425,514
Guarantors [Member] |  |
Net income (loss), including noncontrolling interests | 67,935 | 34,663
Equity in earnings of affiliates | (2,625) | 5,662
Other adjustments | 68,889 | 74,174
Net cash provided by operating activities | 134,199 | 114,499
Capital expenditures | (94,640) | (18,200)
Decrease (increase) in restricted cash | 922 | 613
Net cash used in investing activities | (93,718) | (17,587)
Intercompany financing | (40,417) | (97,733)
Net cash used in financing activities | (40,417) | (97,733)
Net (decrease) increase in cash and cash equivalents | 64 | (821)
Balance, beginning of year | 2,434 | 3,294
Balance, end of period | 2,498 | 2,473
Non-Guarantors [Member] |  |
Net income (loss), including noncontrolling interests | 28,729 | 8,552
Other adjustments | (14,792) | 4,644
Net cash provided by operating activities | 13,937 | 13,196
Capital expenditures | (6,208) | (9,145)
Distributions from equity investments, net | 5,943 | 480
Net cash used in investing activities | (265) | (8,665)
Repayments of debt | (2,409) | (2,294)
Exercise of stock options, net and other |  | (660)
Intercompany financing | (7,095) | 80
Net cash used in financing activities | (9,504) | (2,874)
Effect of exchange rate changes on cash and cash equivalents | (1,051) | (470)
Net (decrease) increase in cash and cash equivalents | 3,117 | 1,187
Balance, beginning of year | 48,547 | 11,357
Balance, end of period | 51,664 | 12,544
Consolidating Entries [Member] |  |
Net income (loss), including noncontrolling interests | (95,844) | (42,395)
Equity in earnings of affiliates | 95,875 | 42,445
Other adjustments | (2,503) | (3,904)
Net cash provided by operating activities | (2,472) | (3,854)
Intercompany financing | 2,472 | 3,854
Net cash used in financing activities | $ 2,472 | $ 3,854

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