Selected Balance Sheet Information (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Inventory for remotely operated vehicles	$ 190,403	$ 174,612
Inventory, Work in Process and Raw Materials	251,386	156,668
Inventory	441,789	331,280
Deferred income taxes	61,589	22,604
Prepaid expenses	69,625	61,627
Other current assets	131,214	84,231
Intangible Assets, Net (Excluding Goodwill)	68,522	78,252
Cash surrender value of life insurance policies	52,862	42,841
Other	3,262	13,091
Other non-current assets	124,646	134,184
Equity Method Investments	37,462	42,619
Payroll and related costs	218,766	218,609
Accrued job costs	72,117	75,037
Deferred revenue, including billings in excess of revenue recognized	150,246	73,465
Other	75,499	41,192
Accounts Payable and Accrued Liabilities, Current	516,628	408,303
Deferred tax liabilities	260,807	178,100
Supplemental Executive Retirement Plan	45,144	35,772
Accrued post-employment benefit obligations	10,528	12,942
Other	41,493	14,659
Accounts Payable and Accrued Liabilities, Noncurrent	357,972	241,473
Medusa Spar LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	37,376	42,540
Other [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 86	$ 79