Selected Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2014

Equity Method Investment, Summarized Financial Information [Abstract]

Schedule of Other Assets and Other Liabilities [Table Text Block]

The following is information regarding selected balance sheet accounts:

		December 31,
(in thousands)		2014		2013
Inventory:
	Remotely operated vehicle parts and components	$	207,885	$	190,403
	Other inventory, primarily raw materials	167,703		251,386
	Total	$	375,588	$	441,789
Other Current Assets:
	Deferred income taxes	$	49,809	$	61,589
	Prepaid expenses	79,067		69,625
	Total	$	128,876	$	131,214
Other Non-Current Assets:
	Intangible assets, net	$	60,895	$	68,522
	Cash surrender value of life insurance policies	53,653		52,862
	Other	13,683		3,262
	Total	$	128,231	$	124,646
Investments in unconsolidated affiliates:
	Medusa Spar LLC	$	32,553	$	37,376
	Other	71		86
		$	32,624	$	37,462
Accrued Liabilities:
	Payroll and related costs	$	209,481	$	218,766
	Accrued job costs	79,894		72,117
	Deferred revenue	116,936		150,246
	Other	83,949		75,499
	Total	$	490,260	$	516,628
Other Long-Term Liabilities:
	Deferred income taxes	$	322,758	$	260,807
	Supplemental Executive Retirement Plan	45,423		45,144
	Long-Term Incentive Plan	29,482		26,700
	Accrued post-employment benefit obligations	11,349		10,528
	Other	15,932		14,793
	Total	$	424,944	$	357,972