Oceaneering International (OII) 10-Q 1 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2018	Oct. 26, 2018
Document Information [Line Items]
Entity Registrant Name	OCEANEERING INTERNATIONAL INC
Entity Central Index Key	73,756
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		98,532,769

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 367,150	$ 430,316
Accounts receivable, net of allowances for doubtful accounts	579,205	476,903
Inventory	189,119	215,282
Other current assets	54,362	64,901
Total Current Assets	1,189,836	1,187,402
Property and Equipment, at cost	2,831,728	2,815,579
Less accumulated depreciation	1,838,214	1,751,375
Net Property and Equipment	993,514	1,064,204
Other Assets:
Goodwill	500,164	455,599
Other non-current assets	240,185	316,745
Total Other Assets	740,349	772,344
Total Assets	2,923,699	3,023,950
Current Liabilities:
Accounts payable	111,756	85,539
Accrued liabilities	364,558	350,258
Total Current Liabilities	476,314	435,797
Long-term Debt	782,190	792,312
Other Long-term Liabilities	163,722	131,323
Commitments and Contingencies
Stockholders' Equity:
Common Stock	27,709	27,709
Additional paid-in capital	217,613	225,125
Treasury stock, at cost	(704,436)	(718,946)
Retained earnings	2,268,687	2,417,412
Accumulated other comprehensive income	(313,454)	(292,136)
Total Shareholders' Equity	1,496,119	1,659,164
Stockholders' Equity Attributable to Noncontrolling Interest	5,354	5,354
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,501,473	1,664,518
Total Liabilities and Sharesholders' Equity	$ 2,923,699	$ 3,023,950

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts receivable, allowances for doubtful accounts	$ 6,430	$ 6,217
Common Stock, par value	$ 0.25	$ 0.25
Common Stock, shares authorized	360,000,000	360,000,000
Common Stock, shares issued	110,834,088	110,834,088
Treasury stock, shares	12,301,319	12,554,714

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue	$ 519,300	$ 476,120	$ 1,414,387	$ 1,437,332
Cost of services and products, adjusted			1,332,238
Cost of services and products	471,665	421,235	1,318,196	1,284,021
Gross Margin	47,635	54,885	96,191	153,311
Selling, general and administrative expense	49,187	44,354	144,529	133,540
Income from Operations	(1,552)	10,531	(48,338)	19,771
Interest income	2,645	1,997	8,187	5,379
Interest expense	(9,885)	(8,650)	(28,058)	(22,517)
Equity earnings (losses) of unconsolidated affiliates	(1,684)	(424)	(3,264)	(1,798)
Other income (expense), net	5,632	(1,287)	(6,398)	(3,901)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	(4,844)	2,167	(77,871)	(3,066)
Provision for income taxes	61,135	3,935	70,317	4,104
Net Income	$ (65,979)	$ (1,768)	$ (148,188)	$ (7,170)
Cash Dividends declared per Share	$ 0	$ 0.15	$ 0	$ 0.45
Basic Earnings per Share	$ (0.67)	$ (0.02)	$ (1.50)	$ (0.07)
Weighted Average Number of Shares Outstanding, Basic	98,533	98,270	98,483	98,224
Diluted Earnings per Share	$ (0.67)	$ (0.02)	$ (1.50)	$ (0.07)
Weighted Average Number of Shares Outstanding, Diluted	98,533	98,270	98,483	98,224

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Income	$ (65,979)	$ (1,768)	$ (148,188)	$ (7,170)
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(5,688)	16,547	(21,318)	20,269
Total other comprehensive income	(5,688)	16,547	(21,318)	20,269
Total Comprehensive Income	$ (71,667)	$ 14,779	$ (169,506)	$ 13,099

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net Income	$ (148,188)	$ (7,170)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	164,674	160,480
Deferred income tax provision	27,021	(25,065)
Net loss (gain) on sales of property and equipment	(8,513)	429
Noncash compensation	8,562	10,854
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable	(85,278)	25,501
Inventory	(7,094)	35,000
Other operating assets	6,377	(20,162)
Currency translation effect on working capital	2,495	253
Current liabilities	60,998	(56,148)
Other operating liabilities	14,602	20,042
Total adjustments to net income	183,844	151,184
Net Cash Provided by Operating Activities	35,656	144,014
Cash Flows from Investing Activities:
Purchases of property and equipment	(83,919)	(59,900)
Payments to Acquire Businesses, Net of Cash Acquired	(68,398)	(11,278)
Proceeds from Sale of Available-for-sale Securities, Debt	62,021	0
Payments for (Proceeds from) Other Investing Activities	(10,417)	(10,777)
Distributions of capital from unconsolidated affiliates	2,372	2,556
Dispositions of property and equipment	15,897	635
Net Cash Used in Investing Activities	(82,444)	(78,764)
Cash Flows from Financing Activities:
Proceeds from Issuance of Long-term Debt	295,816	0
Repayments of Long-term Debt	(300,000)	0
Cash Dividends	0	(44,220)
Proceeds from (Payments for) Other Financing Activities	(1,565)	(1,772)
Net Cash Provided by (Used in) Financing Activities	(5,749)	(45,992)
Effect of Exchange Rate on Cash and Cash Equivalents	(10,629)	2,930
Net Increase (Decrease) in Cash and Cash Equivalents	(63,166)	22,188
Cash and Cash Equivalents-Beginning of Period	430,316	$ 450,193
Cash and Cash Equivalents-End of Period	$ 367,150

Summary Of Major Accounting Pol

Summary Of Major Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Summary Of Major Accounting Policies	SUMMARY OF MAJOR ACCOUNTING POLICIES Basis of Presentation . Oceaneering International, Inc. ("Oceaneering," "we" or "us") has prepared these unaudited consolidated financial statements pursuant to instructions for quarterly reports on Form 10-Q, which we are required to file with the U.S. Securities and Exchange Commission (the "SEC"). These financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP"). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position as of September 30, 2018 and our results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, all such adjustments are of a normal and recurring nature. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our annual report on Form 10-K for the year ended December 31, 2017 . The results for interim periods are not necessarily indicative of annual results. Principles of Consolidation. The consolidated financial statements include the accounts of Oceaneering and our 50% or more owned and controlled subsidiaries. We also consolidate entities that are determined to be variable interest entities if we determine that we are the primary beneficiary; otherwise, we account for those entities using the equity method of accounting. We use the equity method to account for our investments in unconsolidated affiliated companies of which we own an equity interest of between 20% and 50% and as to which we have significant influence, but not control, over operations. We use the cost method for all other long-term investments. Investments in entities that we do not consolidate are reflected on our balance sheet in Other non-current assets. All significant intercompany accounts and transactions have been eliminated. Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Cash and Cash Equivalents. Cash and cash equivalents include demand deposits and highly liquid investments with original maturities of three months or less from the date of investment. Accounts Receivable – Allowances for Doubtful Accounts. We determine the need for allowances for doubtful accounts using the specific identification method. We generally do not require collateral from our customers. Inventory . Inventory is valued at the lower of cost or net realizable value. We determine cost using the weighted-average method. Property and Equipment and Long-Lived Intangible Assets. We provide for depreciation of property and equipment on the straight-line method over their estimated useful lives. We charge the costs of repair and maintenance of property and equipment to operations as incurred, while we capitalize the costs of improvements that extend asset lives or functionality. Upon the disposition of property and equipment, the related cost and accumulated depreciation accounts are relieved and any resulting gain or loss is included as an adjustment to cost of services and products. Intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their estimated useful lives. We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized $1.9 million and $1.1 million of interest in the three-month periods ended September 30, 2018 and 2017 , respectively, and $5.3 million and $3.3 million of interest in the nine-month periods ended September 30, 2018 and 2017 , respectively. We do not allocate general administrative costs to capital projects. Our management periodically, and upon the occurrence of a triggering event, reviews the realizability of our property and equipment and long-lived intangible assets to determine whether any events or changes in circumstances indicate that the carrying amounts of the assets may not be recoverable. For long-lived assets to be held and used, we base our evaluation on impairment indicators, such as the nature of the assets, the future economic benefits of the assets, any historical or future profitability measurements and other external market conditions or factors that may be present. If such impairment indicators are present or other factors exist that indicate that the carrying amount of an asset may not be recoverable, we determine whether an impairment has occurred through the use of an undiscounted cash flows analysis of the asset at the lowest level for which identifiable cash flows exist. If an impairment has occurred, we recognize a loss for the difference between the carrying amount and the fair value of the asset. For assets held for sale or disposal, the fair value of the asset is measured using fair market value less estimated costs to sell. Assets are classified as held-for-sale when we have a plan for disposal of certain assets and those assets meet the held for sale criteria. Business Acquisitions . We account for business combinations using the acquisition method of accounting, and, in each case, we allocate the acquisition price to the assets acquired and liabilities assumed based on their fair market values as of the date of acquisition. In March 2018, we acquired Ecosse Subsea Limited (“Ecosse”) for $68 million in cash. Headquartered in Aberdeen, Scotland, Ecosse builds and operates tools for seabed preparation, route clearance and trenching for the installation of submarine cables and pipelines. These services are offered on an integrated basis that includes vessels, ROVs and survey services. We have accounted for this acquisition by allocating the purchase price to the assets acquired and liabilities assumed based on their estimated fair values as of the date of acquisition. This purchase price allocation is preliminary and is subject to change upon completion of our valuation procedures. We have included Ecosse’s operations in our consolidated financial statements starting from the date of closing and its operating results are reflected in our Subsea Projects segment. Dispositions. In September 2018, we consummated the sale of our cost method investment in ASV Global, LLC for $15.1 million . The total consideration is subject to final working capital adjustments and customary holdbacks. The sale resulted in a pre-tax gain of $9.3 million , which is reflected in Other income (expense), net in our Consolidated Statement of Operations for the three- and nine-month periods ended September 30, 2018 Goodwill. Annually, we are required to evaluate our goodwill by performing a qualitative or quantitative impairment test. Under the qualitative approach and after assessing the totality of events or circumstances, we determine that it is more likely than not the fair value of a reporting unit is less than its carrying amount, we are required to perform the quantitative analysis to determine the fair value. We tested the goodwill attributable to each of our reporting units for impairment as of December 31, 2017 and concluded that there was no impairment. In addition to our annual evaluation of goodwill for impairment, upon the occurrence of a triggering event, we review our goodwill to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Foreign Currency Translation. The functional currency for several of our foreign subsidiaries is the applicable local currency. Results of operations for foreign subsidiaries with functional currencies other than the U.S. dollar are translated into U.S. dollars using average exchange rates during the period. Assets and liabilities of these foreign subsidiaries are translated into U.S. dollars using the exchange rates in effect as of the balance sheet date, and the resulting translation adjustments are recognized, in accumulated other comprehensive income as a component of shareholders' equity. All foreign currency transaction gains and losses are recognized currently in the Consolidated Statements of Operations. Revenue Recognition. On January 1, 2018, we adopted Accounting Standard Update ("ASU") 2014-09, " Revenue from Contracts with Customers, " which implemented Accounting Standards Codification Topic 606 ("ASC 606"). We have used the modified retrospective method applied to those contracts which were not completed as of January 1, 2018, and have utilized the practical expedient to reflect the effect on contract modifications in the aggregate. The cumulative effect of applying ASC 606 has been recognized as an adjustment to retained earnings as of January 1, 2018. The comparative information with respect to prior periods has not been retrospectively restated and continues to be reported under the accounting standards in effect for those periods. The cumulative effect of the changes made to our Consolidated Balance Sheet as of January 1, 2018 for the adoption of ASC 606 was as follows: (in thousands) Dec 31, 2017 Adjustments Due to ASC 606 Jan 1, 2018 Under ASC 606 Assets Accounts receivable $ 476,903 $ (163,963 ) $ 312,940 Contract assets — 171,956 171,956 Total accounts receivable 476,903 7,993 484,896 Inventory 215,282 (34,187 ) 181,095 Liabilities Accrued liabilities 350,258 (63,045 ) 287,213 Contract liabilities — 37,590 37,590 Total accrued liabilities 350,258 (25,455 ) 324,803 Other long-term liabilities 131,323 (202 ) 131,121 Equity Retained earnings 2,417,412 (537 ) 2,416,875 In accordance with the ASC 606 requirements, the impact of adoption on carryover contracts on our Consolidated Statement of Operations and Consolidated Balance Sheet was as follows: Consolidated Statement of Operations Nine Months Ended Sep 30, 2018 (in thousands) As Reported Under ASC 606 Effect of Change Balances Without Adoption of ASC 606 Revenue $ 1,414,387 $ 12,552 $ 1,426,939 Cost of services and products 1,318,196 14,042 1,332,238 Provision (benefit) for income taxes 70,317 (212 ) 70,105 Net income (loss) (148,188 ) (1,278 ) (149,466 ) Consolidated Balance Sheet Sep 30, 2018 (in thousands) As Reported Under ASC 606 Effect of Change Balances Without Adoption of ASC 606 Assets Accounts receivable $ 345,803 $ — $ 345,803 Unbilled accounts receivable — 221,657 221,657 Contract assets 233,402 (233,402 ) — Total accounts receivable 579,205 (11,745 ) 567,460 Inventory 189,119 19,359 208,478 Liabilities Accrued liabilities 338,272 (321 ) 337,951 Contract liabilities 26,286 8,683 34,969 Total accrued liabilities 364,558 8,362 372,920 Other long-term liabilities 163,722 (10 ) 163,712 Equity Retained earnings 2,268,687 (741 ) 2,267,946 All of our revenue is realized through contracts with customers. We recognize our revenue according to the contract type. On a daily basis, we recognize service revenue over time for contracts that provide for specific time, material and equipment charges, which we bill periodically, ranging from weekly to monthly. We use the input method to faithfully depict revenue recognition, because each day of service provided represents value to the customer. The performance obligations in these contracts are satisfied, and revenue is recognized, as the work is performed. We have used the expedient available to recognize revenue when the billing corresponds to the value realized by the customer where appropriate. We account for significant fixed-price contracts, mainly relating to our Subsea Products segment, and to a lesser extent in our Subsea Projects and Advanced Technologies segments, by recognizing revenue over time using an input, cost-to-cost measurement percentage-of-completion method. We use the input cost-to-cost method to faithfully depict revenue recognition. This commonly used method allows appropriate calculation of progress on our contracts. A performance obligation is satisfied as we create a product on behalf of the customer over the life of the contract. The remainder of our revenue is recognized at the point in time when control transfers to the customer, thus satisfying the performance obligation. We have elected to recognize the cost for freight and shipping as an expense when incurred. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by us from a customer, are excluded from revenue. In our service-based business lines, which principally charge on a day rate basis for services provided, there is no significant impact in the pattern of revenue and profit recognition as a result of implementation of ASC 606. In our product-based business lines, we expect impacts on the pattern of our revenue and profit recognition in our contracts using the percentage-of-completion method, as a result of the requirement to exclude uninstalled materials and significant inefficiencies from the measure of progress. This is most likely to occur in our Subsea Products segment. We apply judgment in the determination and allocation of transaction price to performance obligations, and the subsequent recognition of revenue, based on the facts and circumstances of each contract. We routinely review estimates related to our contracts and, where required, reflect revisions to profitability in earnings immediately. If an element of variable consideration has the potential for a significant future reversal of revenue, we will constrain that variable consideration to a level intended to remove the potential future reversal. If a current estimate of total contract cost indicates an ultimate loss on a contract, we recognize the projected loss in full when we determine it. In prior years, we have recorded adjustments to earnings as a result of revisions to contract estimates. We always strive to estimate our contract costs and profitability accurately. However, there could be significant adjustments to overall contract costs in the future, due to changes in facts and circumstances. In general, our payment terms consist of those services billed regularly as provided and those products delivered at a point in time, which are invoiced after the performance obligation is satisfied. Our product and service contracts with milestone payments due at agreed progress points during the contract are invoiced when those milestones are reached, which may differ from the timing of revenue recognition. Our payment terms generally do not provide financing of contracts to customers, nor do we receive financing from customers as a result of these terms. Please see Note 2 — "Revenue" — for more information on our revenue from contracts with customers. New Accounting Standards . In January 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-01, "Financial Instruments — Overall (Subtopic 825-10) Recognition and Measurement of Financial Assets and Financial Liabilities." This update: • requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value, with changes in fair value recognized in net income; and • provides an expedient for the valuation and impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify value and impairment — when a qualitative assessment indicates that an impairment exists, an entity is required to measure the investment at fair value. ASU No. 2016-01 was effective for us beginning on January 1, 2018, and we have utilized the expedient for valuing equity investments without readily determinable fair values. This update has not had a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases," which requires reporting entities to separate the lease components from the non-lease components in a contract unless certain practical expedients are elected. This update also requires reporting entities to recognize lease assets and lease liabilities on the balance sheet for substantially all lease arrangements. In July 2018, the FASB issued ASU No. 2018-011, an amendment to ASU 2016-02 (collectively, the “New Leases Standard”), which provides entities with an additional and optional transition method to adopt the new standard. The amendments in this ASU also provide lessors with a practical expedient to not separate nonlease components from associated lease component and to account for those components as a single component if the required conditions are met. We have evaluated the impact of this amendment on the financial statements. The New Leases Standard will become effective for us beginning January 1, 2019. We intend to use the optional transition method that allows us to apply the New Leases Standard at the effective date prospectively without restating the prior periods presented. A cumulative-effect adjustment will be recognized to the opening balance of retained earnings in the period of adoption. We plan to elect the package of practical expedients that permit us to retain the identification and classification of leases under the previous accounting guidance, to keep the leases with an initial term of twelve months or less off the balance sheet, and to not separate nonlease components from associated lease components for both lessee and lessor leases. We have identified that there will be a material increase in both assets and liabilities resulting from the adoption of the New Leases Standard, predominantly from real estate operating leases, which were not required to be recognized on the balance sheet under the previous lease standard. We will complete all of the required work to assess our position, create the necessary policy, procedures and controls and calculate the effect of applying the New Leases Standard at the date of initial application in line with the timeline and requirements of the standard. In October 2016, the FASB issued ASU 2016-16, "Income Taxes (Topic 740) – Intra-Entity Transfers of Assets Other than Inventory." Previously, U.S. GAAP generally prohibited the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset was sold to an outside party. The amendments in this update eliminate the exception for an intra-entity transfer of an asset other than inventory. Two common examples of assets included within the scope of this update are intellectual property and property, plant and equipment. The exception for an intra-entity transfer of inventory will remain in place. The amendments in this update were effective for us beginning January 1, 2018. This ASU has not had a material effect on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the December 2017 enactment of U.S. tax reform legislation commonly referred to as the Tax Cuts and Jobs Act (the "Tax Act"). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. The amendments in this update also require certain disclosures about stranded tax effects. The amendments in this update will become effective for us beginning January 1, 2019, and early adoption is permitted. We do not anticipate that this ASU will have a material effect on our consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, "Compensation – Stock Compensation (Topic 718) Improvements to Nonemployee Share-Based Payment Accounting." This ASU expands the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. The amendments in this ASU will become effective for us beginning January 1, 2019, and early adoption is permitted. We do not anticipate that this ASU will have a material effect on our consolidated financial statements.

Revenue Revenue

Revenue Revenue	9 Months Ended
	Sep. 30, 2018
Revenue [Abstract]
Revenue recognition [Text Block]	2. Revenue Revenue By Category The following table presents Revenue disaggregated by business segment, geographical region, and timing of transfer of goods or services. Three Months Ended Nine Months Ended (in thousands) Sep 30, 2018 Sep 30, 2017 Jun 30, 2018 Sep 30, 2018 Sep 30, 2017 Business Segment: Energy Services and Products Remotely Operated Vehicles $ 105,045 $ 104,617 $ 107,426 $ 298,065 $ 302,071 Subsea Products 137,099 143,583 121,704 385,491 469,115 Subsea Projects 104,972 80,116 78,036 239,868 218,617 Asset Integrity 62,346 61,098 67,422 191,056 171,948 Total Energy Services and Products 409,462 389,414 374,588 1,114,480 1,161,751 Advanced Technologies 109,838 86,706 104,086 299,907 275,581 Total $ 519,300 $ 476,120 $ 478,674 $ 1,414,387 $ 1,437,332 Geographic Operating Areas: Foreign: Africa $ 51,669 $ 57,901 $ 61,966 $ 168,722 $ 213,172 United Kingdom 56,769 48,074 50,999 153,087 189,534 Norway 51,952 54,412 51,827 142,820 128,965 Asia and Australia 39,764 50,407 43,448 122,158 147,555 Brazil 14,554 7,862 13,461 46,844 25,807 Other 45,898 23,192 14,811 80,348 54,540 Total Foreign 260,606 241,848 236,512 713,979 759,573 United States 258,694 234,272 242,162 700,408 677,759 Total $ 519,300 $ 476,120 $ 478,674 $ 1,414,387 $ 1,437,332 Sep 30, 2018 Timing of Transfer of Goods or Services: Revenue recognized over time $ 1,297,095 Revenue recognized at a point in time 117,292 Total $ 1,414,387 Contract Balances Our contracts with milestone payments have, in the aggregate, a significant impact on the Contract asset and the Contract liability balances. Milestones are contractually agreed with customers and relate to significant events across the contract lives. Some milestones are achieved before revenue is recognized, resulting in a Contract liability, other milestones are achieved after revenue is recognized resulting in a Contract asset. The following table provides information about Contract assets, and Contract liabilities from contracts with customers. (in thousands) Sep 30, 2018 Jan 1, 2018 Contract assets $ 233,402 $ 171,956 Contract liabilities 26,286 37,590 Our payment terms consist of those services billed regularly as provided and those products delivered at a point in time, which are invoiced after the performance obligation is satisfied. Our product and service contracts with milestone payments due at agreed progress points during the contract are invoiced when those milestones are reached, which may differ from the timing of revenue recognition. During the nine months ended September 30, 2018 , Contract assets increased by $61.4 million from its opening balance due to the revenue recognition of $1.4 billion exceeding amounts billed of $1.3 billion . Contract liabilities decreased $11.3 million from its opening balance, due to revenue recognition of $27.7 million less deferrals of milestone payments that totaled $16.4 million . There were no cancellations, impairments or other significant impacts in the period that relate to other categories of explanation. Performance Obligations As of September 30, 2018 , the aggregate amount of the transaction price allocated to remaining performance obligations was $276 million . We expect to recognize revenue for the remaining performance obligations of $223 million over the next twelve months. The aggregate amount of transaction price allocated to remaining performance obligations that were unsatisfied (or partially unsatisfied) as of September 30, 2018 are noted above. In arriving at this value, we have used two expedients available to us and are not disclosing amounts in relation to performance obligations: (1) that are part of contracts with an original expected duration of one year or less; or (2) on contracts where we recognize revenue in line with the billing. Due to the nature of our service contracts in our Remotely Operated Vehicle, Subsea Projects, Asset Integrity and Advanced Technologies segments, the majority of our contracts either have initial contract terms of one year or less or have customer option cancellation clauses that lead us to consider the original expected duration of one year or less. In our Subsea Products and Advanced Technologies segments, we have long-term contracts that extend beyond one year, and these make up the majority of the balance reported. We also have shorter-term product contracts with an expected original duration of one year or less that have been excluded. Where appropriate, we have made estimates within the transaction price of elements of variable consideration within the contracts and constrained those amounts to a level where we consider that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. The amount of revenue recognized in the nine months ended September 30, 2018 , which was associated with performance obligations completed or partially completed in prior periods was not significant. As of September 30, 2018 , there was no outstanding liability balance for refunds or returns due to the nature of our contracts and the services and products we provide. Our warranties are limited to assurance warranties that are of a standard length and are not considered to be a material right . The majority of our contracts consist of a single performance obligation. When there are multiple obligations, we look for observable evidence of stand-alone selling prices on which to base the allocation. This involves judgment as to the appropriateness of the observable evidence relating to the facts and circumstances of the contract. If we do not have observable evidence, we estimate stand-alone selling prices by taking a cost plus margin approach, using typical margins from the type of service or product, customer and regional geography involved. Costs to Obtain or Fulfill a Contract In line with the available expedient, we capitalize costs to obtain a contract when those amounts are significant and the contract is expected at inception to exceed one year in duration; otherwise, the costs are expensed in the period when incurred. Costs to obtain a contract primarily consist of bid and proposal costs, which are incremental to our fixed costs. There was no balance or amortization of Costs to obtain a contract in the current reporting period. Costs to fulfill a contract primarily consist of certain mobilization costs incurred to provide services or products to our customers. These costs are deferred and amortized over the period of contract performance. The closing balance of Costs to fulfill a contract as of September 30, 2018 was $12.7 million , with $2.6 million and $5.1 million of amortization for the three- and nine-month periods ended September 30, 2018 , respectively. No impairment costs were recognized.

Inventory

Inventory	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventory	INVENTORY The following is information regarding our inventory: (in thousands) Sep 30, 2018 Dec 31, 2017 Inventory, net: Remotely operated vehicle parts and components $ 105,956 $ 97,313 Other inventory, primarily raw materials 83,163 117,969 Total $ 189,119 $ 215,282

Debt

Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Debt	DEBT Long-term Debt consisted of the following: (in thousands) Sep 30, 2018 Dec 31, 2017 4.650% Senior Notes due 2024 $ 500,000 $ 500,000 6.000% Senior Notes due 2028 300,000 — Term Loan Facility — 300,000 Fair value of interest rate swaps on $200 million of principal (9,717 ) (2,990 ) Unamortized debt issuance costs (8,093 ) (4,698 ) Revolving Credit Facility — — Long-term Debt $ 782,190 $ 792,312 In November 2014, we completed the public offering of $500 million aggregate principal amount of 4.650% Senior Notes due 2024 (the "2024 Senior Notes"). We pay interest on the 2024 Senior Notes on May 15 and November 15 of each year. The 2024 Senior Notes are scheduled to mature on November 15, 2024. In February 2018, we completed the public offering of $300 million aggregate principal amount of 6.000% Senior Notes due 2028 (the "2028 Senior Notes"). We will pay interest on the 2028 Senior Notes on February 1 and August 1 of each year, beginning on August 1, 2018. The 2028 Senior Notes are scheduled to mature on February 1, 2028. We may redeem some or all of the 2024 Senior Notes and the 2028 Senior Notes (collectively, the "Senior Notes") at specified redemption prices. We used the net proceeds from the 2028 Senior Notes to repay our term loan indebtedness described further below. In October 2014, we entered into a credit agreement (as amended, the "Credit Agreement") with a group of banks. The Credit Agreement provided for a $500 million five-year revolving credit facility (the "Revolving Credit Facility"). Subject to certain conditions, the aggregate commitments under the Revolving Credit Facility may be increased by up to $300 million at any time upon agreement between us and existing or additional lenders. Borrowings under the Revolving Credit Facility may be used for general corporate purposes. The Credit Agreement also provided for a $300 million term loan (the "Term Loan Facility"), which we repaid in full in February 2018, using net proceeds from the issuance of our 2028 Senior Notes referred to above, and cash on hand. In February 2018, we entered into Agreement and Amendment No. 4 to the Credit Agreement ("Amendment No. 4"). Amendment No. 4 amended the Credit Agreement to, among other things, extend the maturity of the Revolving Credit Facility to January 25, 2023 with the extending Lenders, which represent 90% of the existing commitments of the Lenders, such that the total commitments for the Revolving Credit Facility will be $500 million until October 25, 2021, and thereafter $450 million until January 25, 2023. Borrowings under the Revolving Credit Facility bear interest at an Adjusted Base Rate or the Eurodollar Rate (both as defined in the Credit Agreement), at our option, plus an applicable margin based on our Leverage Ratio (as defined in the Credit Agreement) and, at our election, based on the ratings of our senior unsecured debt by designated ratings services, thereafter to be based on such debt ratings. The applicable margin varies: (1) in the case of advances bearing interest at the Adjusted Base Rate, from 0.125% to 0.750% for borrowings under the Revolving Credit Facility; and (2) in the case of advances bearing interest at the Eurodollar Rate, from 1.125% to 1.750% . The Adjusted Base Rate is the highest of (1) the per annum rate established by the administrative agent as its prime rate, (2) the federal funds rate plus 0.50% and (3) the daily one-month LIBOR plus 1% . We pay a commitment fee ranging from 0.125% to 0.300% on the unused portion of the Revolving Credit Facility, depending on our Leverage Ratio. The commitment fees are included as interest expense in our consolidated financial statements. The Credit Agreement contains various covenants that we believe are customary for agreements of this nature, including, but not limited to, restrictions on our ability and the ability of each of our subsidiaries to incur debt, grant liens, make certain investments, make distributions, merge or consolidate, sell assets and enter into certain restrictive agreements. We are also subject to a maximum adjusted total Capitalization Ratio (as defined in the Credit Agreement) of 55%. The Credit Agreement includes customary events of default and associated remedies. As of September 30, 2018 , we were in compliance with all the covenants set forth in the Credit Agreement. We have two interest rate swaps in place on a total of $200 million of the 2024 Senior Notes for the period to November 2024. Please refer to Note 5 — "Commitments and Contingencies" — for more information on our interest rate swaps. We incurred $6.9 million and $4.2 million of issuance costs related to the 2024 Senior Notes and the 2028 Senior Notes, respectively, and $2.6 million of loan costs, including costs of the amendments prior to Amendment No. 4, related to the Credit Agreement. The costs, net of accumulated amortization, are included as a reduction of Long-term Debt in our Consolidated Balance Sheet, as it pertains to the Senior Notes, and in Other non-current assets, as it pertains to the Credit Agreement. We are amortizing these costs to Interest expense through the maturity date for the Senior Notes and to January 2023 for the Credit Agreement.

Commitments And Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Litigation. In the ordinary course of business, we are subject to actions for damages alleging personal injury under the general maritime laws of the United States, including the Jones Act, for alleged negligence. We report actions for personal injury to our insurance carriers and believe that the settlement or disposition of those claims will not have a material adverse effect on our consolidated financial position, results of operations or cash flows. Various other actions and claims are pending against us, most of which are covered by insurance. Although we cannot predict the ultimate outcome of these matters, we believe that our ultimate liability, if any, that may result from these other actions and claims will not materially affect our results of operations, cash flows or financial position. Financial Instruments and Risk Concentration. In the normal course of business, we manage risks associated with foreign exchange rates and interest rates through a variety of strategies, including the use of hedging transactions. As a matter of policy, we do not use derivative instruments unless we have an underlying exposure. Other financial instruments that potentially subject us to concentrations of credit risk are principally cash and cash equivalents and accounts receivable. The carrying values of cash and cash equivalents approximate their fair values due to the short-term maturity of the underlying instruments. Accounts receivable are generated from a broad group of customers, primarily from within the energy industry, which is our major source of revenue. Due to their short-term nature, carrying values of our accounts receivable and accounts payable approximate fair market values. We estimated the aggregate fair market value of the Senior Notes to be $790 million as of September 30, 2018 , based on quoted prices. Since the market for the Senior Notes is not an active market, the fair value of the Senior Notes is classified within Level 2 in the fair value hierarchy under U.S. GAAP (inputs other than quoted prices in active markets for similar assets and liabilities that are observable or can be corroborated by observable market data for substantially the full terms for the assets or liabilities). We have two interest rate swaps in place on a total of $200 million of the 2024 Senior Notes for the period to November 2024. The agreements swap the fixed interest rate of 4.650% on $100 million of the 2024 Senior Notes to the floating rate of one month LIBOR plus 2.426% and on another $100 million to one month LIBOR plus 2.823%. We estimate the combined fair value of the interest rate swaps to be a net liability of $9.7 million as of September 30, 2018 , which is included on our balance sheet in our Other Long-term Liabilities. These values were arrived at based on a discounted cash flow model using Level 2 inputs. Since the second quarter of 2015, the exchange rate for the Angolan kwanza relative to the U.S. dollar generally has been declining, although the exchange rate was relatively stable during 2017. As our functional currency in Angola is the U.S. dollar, we recorded foreign currency transaction losses related to the kwanza of $4.5 million and $16.9 million in the three- and nine-month periods ended September 30, 2018 , respectively, as a component of Other income (expense), net in our Consolidated Statements of Operations for those respective periods. Our foreign currency transaction gains or losses are related primarily to the remeasurement of our Angolan kwanza cash balances to U.S. dollars. Any conversion of cash balances from kwanza is controlled by the central bank in Angola, and the central bank slowed this process from mid-2015 to 2017, causing our kwanza cash balances to increase during that period of time. However, beginning in 2018, the Angolan central bank has allowed us to repatriate cash from Angola. Through September 30, 2018 , we were able to repatriate $57 million of cash from Angola. As of September 30, 2018 and December 31, 2017 , we had the equivalent of approximately $14 million and $27 million of kwanza cash balances, respectively, in Angola reflected on our balance sheet. The decrease in kwanza cash balances in 2018 was mainly attributable to the repatriation of cash from Angola and cash used in our Angolan operations. Since December 31, 2017 , Angola has devalued its currency by almost 75%. We will incur further foreign currency exchange losses in Angola if further currency devaluations occur. To mitigate our currency exposure risk in Angola, we have used kwanza to purchase equivalent Angolan central bank (Banco Nacional de Angola) bonds. The bonds are denominated as U.S. dollar equivalents, so that, upon payment of semi-annual interest and principal upon maturity, payment is made in kwanza, equivalent to the respective U.S. dollars at the then-current exchange rate. Our intention was to hold the bonds to maturity, and to reinvest funds from maturing bonds in similar long-term assets. We previously believed the chance of selling the bonds before maturity and repatriating cash out of Angola was remote. In the second quarter of 2018, $10 million of bonds matured, and the proceeds were reinvested by us in similar long-term assets. Additionally, we sold $52 million of bonds prior to their maturity date through September 30, 2018 . Because we intend to sell the bonds if we are able to repatriate the proceeds, we changed our accounting for these bonds from held-to-maturity securities to available-for-sale securities. As of September 30, 2018 , we classified $3 million of bonds due to mature in the next twelve months as Other current assets and $15 million of bonds due to mature after twelve months as Other non-current assets on our Consolidated Balance Sheet, with $5 million maturing in 2020 and $10 million maturing in 2023. We estimated the fair market value of the Angolan bonds to be approximately $18 million as of September 30, 2018 using quoted prices. Since the market for the Angolan bonds is not an active market, the fair value of the Angolan bonds is classified within Level 2 in the fair value hierarchy under U.S. GAAP. As of September 30, 2018 , we have not recorded the difference between the fair market value and carrying amount of the outstanding bonds through the Consolidated Statement of Comprehensive Income (Loss) due to the insignificance of the difference between the fair market value and the carrying amount of the bonds.

Earnings Per Share, Stock-Based

Earnings Per Share, Stock-Based Compensation and Share Repurchase Plan	9 Months Ended
	Sep. 30, 2018
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Abstract]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation	Earnings per Share. For each period presented, the only difference between our calculated weighted average basic and diluted number of shares outstanding is the effect of outstanding restricted stock units. In periods where we have a net loss, the effect of our outstanding restricted stock units is anti-dilutive, and therefore does not increase our diluted shares outstanding. For each period presented, our net income (loss) allocable to both common shareholders and diluted common shareholders is the same as our net income (loss) in our consolidated statements of operations. Dividends. From the second quarter of 2014 through the third quarter of 2016, we paid a quarterly dividend to our common shareholders of $0.27 per share. Starting in the fourth quarter of 2016 through the third quarter of 2017, we paid a dividend of $0.15 per share. Our last quarterly dividend was $0.15 per share and was declared in July 2017 and was paid in September 2017. Share-Based Compensation. We have no outstanding stock options and, therefore, no share-based compensation to be recognized pursuant to stock option grants. During 2016, 2017 and through June 30, 2018, we granted restricted units of our common stock to certain of our key executives and employees. During 2016 through 2018, our Board of Directors granted restricted common stock to our nonemployee directors. The restricted units granted to our key executives and key employees generally vest in full on the third anniversary of the award date, conditional on continued employment. The restricted stock unit grants can vest pro rata over three years, provided the individual meets certain age and years-of-service requirements. The shares of restricted common stock we grant to our non-employee directors vest in full on the first anniversary of the award date, conditional upon continued service as a director. Each grantee of shares of restricted stock is deemed to be the record owner of those shares during the restriction period, with the right to vote and receive any dividends on those shares. The restricted stock units outstanding have no voting or dividend rights. For each of the restricted stock units granted in 2016 through September 30, 2018 , at the earlier of three years after grant or at termination of employment or service, the grantee will be issued one share of our common stock for each unit vested. As of September 30, 2018 and December 31, 2017 , respective totals of 1,474,642 and 1,181,805 shares of restricted stock or restricted stock units were outstanding. We estimate that share-based compensation cost not yet recognized related to shares of restricted stock or restricted stock units, based on their grant-date fair values, was $13 million as of September 30, 2018 . This expense is being recognized on a staged-vesting basis over three years for awards attributable to individuals meeting certain age and years-of-service requirements, and on a straight-line basis over the applicable vesting period of one or three years for the other awards. Share Repurchase Plan. In December 2014, our Board of Directors approved a plan to repurchase up to 10 million shares of our common stock. Under this plan, in 2015, we had repurchased 2.0 million shares of our common stock for $100 million . We did not repurchase any shares during 2016 through through September 30, 2018 . We account for the shares we hold in treasury under the cost method, at average cost.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES In December 2017, the United States enacted the the Tax Act, which included a number of changes to existing U.S. tax laws that have an impact on our income tax provision, most notably a reduction of the U.S. corporate income tax rate from 35 percent to 21 percent for tax years beginning after December 31, 2017, and the creation of a territorial tax system with a one-time mandatory tax on applicable previously deferred earnings of foreign subsidiaries. We recognized the income tax effects of the Tax Act in our financial statements for the year ended December 31, 2017 in accordance with Staff Accounting Bulletin No. 118 (“SAB 118”), which provided SEC staff guidance for the application of accounting standards for income taxes in the reporting period in which the Tax Act was enacted. As such, our financial results reflected provisional amounts for those specific income tax effects of the Tax Act for which the accounting was incomplete but a reasonable estimate could be determined. The final determination is expected to be completed and reflected in our financial statements issued for subsequent reporting periods that fall within the measurement period contemplated by SAB 118. During the second quarter of 2018, the United States Internal Revenue Service issued Notice 2018-26, announcing its intent to issue regulations related to the application of the Section 965 one-time mandatory tax on applicable previously deferred earnings of foreign subsidiaries and potential anti-avoidance measures. Subsequently, on August 1, 2018, the United States Internal Revenue Service issued Proposed Regulations providing guidance regarding Section 965 of the Internal Revenue Code as amended by the Tax Act. We have included the provisional impact of the proposed regulations in our third quarter 2018 tax expense. During interim periods, we provide for income taxes based on our current estimated annual effective tax rate using assumptions as to (1) earnings and other factors that would affect the tax provision for the remainder of the year and (2) the operations of foreign branches and subsidiaries that are subject to local income and withholding taxes. In the three-month period ended September 30, 2018 , we recognized additional tax expense of $56.5 million for discrete items, primarily related to $39.1 million of valuation allowances on certain deferred tax assets recognized in prior years that may not be realizable in certain foreign jurisdictions, $7.9 million of provisional tax related to the Tax Act, $3.6 million related to uncertain tax positions and $5.9 million associated with various other issues. In the nine-month period ended September 30, 2018 , we recognized additional tax expense of $60.1 million for discrete items, primarily related to $39.1 million of valuation allowances on certain deferred tax assets recognized in prior years that may not be realizable in certain foreign jurisdictions, $7.9 million of provisional tax related to the Tax Act, $4.8 million related to uncertain tax positions and $8.3 million associated with various other issues. The effective tax rate for the nine months ended September 30, 2018 was different from the federal statutory rate of 21.0% , primarily due to the geographic mix of operating revenue and results that generated taxes in certain jurisdictions that exceeded the tax benefit from losses and credits in other jurisdictions, and the discrete items discussed above. We will continue to evaluate the realizability of our recorded deferred tax assets. It is our intention to continue to indefinitely reinvest in certain of our international operations; therefore, we do not provide withholding taxes on the possible distribution of these earnings. We do not believe the effective tax rate before discrete items is meaningful, as current conditions do not allow for relevant guidance in this regard. The effective tax rate for the nine months ended September 30, 2017 was lower than the federal statutory rate of 35.0% , primarily due to our intention to indefinitely reinvest in certain of our international operations, partially offset by a discrete tax item associated with share-based compensation. In 2017, we did not provide for U.S. taxes on the portion of our foreign earnings that we deemed indefinitely reinvested. We conduct our international operations in a number of locations that have varying laws and regulations with regard to income and other taxes, some of which are subject to interpretation. We recognize the benefit for a tax position if the benefit is more likely than not to be sustainable upon audit by the applicable taxing authority. If this threshold is met, the tax benefit is then measured and recognized at the largest amount that we believe is greater than 50% likely of being realized upon ultimate settlement. We do not believe that the total of unrecognized tax benefits will increase or decrease significantly in the next twelve months. We account for any applicable interest and penalties on uncertain tax positions as a component of our provision for income taxes on our financial statements. Through September 30, 2018 , we have $10.4 million accrued in Other Long-term Liabilities for uncertain tax positions. Any additions or reductions to those liabilities would affect our effective income tax rate in the periods of change. Our tax returns are subject to audit by taxing authorities in multiple jurisdictions. These audits often take years to complete and settle. The following lists the earliest tax years open to examination by tax authorities where we have significant operations: Jurisdiction Periods United States 2014 United Kingdom 2015 Norway 2015 Angola 2013 Brazil 2013 Australia 2013

Business Segment Information

Business Segment Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting, Measurement Disclosures [Abstract]
Business Segment Information	BUSINESS SEGMENT INFORMATION We are a global provider of engineered services and products, primarily to the offshore energy industry. Through the use of our applied technology expertise, we also serve the defense, aerospace and commercial theme park industries. Our Energy Services and Products business consists of Remotely Operated Vehicles ("ROVs"), Subsea Products, Subsea Projects and Asset Integrity. Our ROV segment provides submersible vehicles operated from the surface to support offshore energy exploration, development and production activities. Our Subsea Products segment supplies a variety of specialty subsea hardware and related services. Our Subsea Projects segment provides multiservice subsea support vessels and offshore diving and support vessel operations, primarily for inspection, maintenance and repair and installation activities. We have also provided survey, autonomous underwater vehicle and satellite-positioning services. Our Asset Integrity segment provides asset integrity management and assessment services, nondestructive testing and inspection. Our Advanced Technologies business provides project management, engineering services and equipment for applications in non-energy industries. Unallocated Expenses are those not associated with a specific business segment. These consist of expenses related to our incentive and deferred compensation plans, including restricted stock and bonuses, as well as other general expenses, including corporate administrative expenses. There are no differences in the basis of segmentation or in the basis of measurement of segment profit or loss from those used in our consolidated financial statements for the year ended December 31, 2017 . The table that follows presents Revenue, Income (Loss) from Operations and Depreciation and Amortization by business segment for each of the periods indicated. Three Months Ended Nine Months Ended (in thousands) Sep 30, 2018 Sep 30, 2017 Jun 30, 2018 Sep 30, 2018 Sep 30, 2017 Revenue Energy Services and Products Remotely Operated Vehicles $ 105,045 $ 104,617 $ 107,426 $ 298,065 $ 302,071 Subsea Products 137,099 143,583 121,704 385,491 469,115 Subsea Projects 104,972 80,116 78,036 239,868 218,617 Asset Integrity 62,346 61,098 67,422 191,056 171,948 Total Energy Services and Products 409,462 389,414 374,588 1,114,480 1,161,751 Advanced Technologies 109,838 86,706 104,086 299,907 275,581 Total $ 519,300 $ 476,120 $ 478,674 $ 1,414,387 $ 1,437,332 Income (Loss) from Operations Energy Services and Products Remotely Operated Vehicles $ 772 $ 5,009 $ 4,542 $ 2,916 $ 21,310 Subsea Products 5,367 12,383 2,295 9,417 34,418 Subsea Projects 6,088 6,512 (10,358 ) (6,629 ) 9,699 Asset Integrity 2,275 3,050 3,357 7,311 9,072 Total Energy Services and Products 14,502 26,954 (164 ) 13,015 74,499 Advanced Technologies 8,960 6,602 7,886 18,514 19,260 Unallocated Expenses (25,014 ) (23,025 ) (27,359 ) (79,867 ) (73,988 ) Total $ (1,552 ) $ 10,531 $ (19,637 ) $ (48,338 ) $ 19,771 Depreciation and Amortization Energy Services and Products Remotely Operated Vehicles $ 27,428 $ 28,269 $ 28,269 $ 83,339 $ 86,534 Subsea Products 12,349 13,340 14,914 41,288 39,124 Subsea Projects 7,464 7,881 13,053 28,830 23,742 Asset Integrity 1,635 2,139 1,836 5,319 5,379 Total Energy Services and Products 48,876 51,629 58,072 158,776 154,779 Advanced Technologies 792 796 737 2,295 2,377 Unallocated Expenses 1,035 1,088 1,034 3,603 3,324 Total $ 50,703 $ 53,513 $ 59,843 $ 164,674 $ 160,480 We determine Income (Loss) from Operations for each business segment before interest income or expense, Other income (expense) and Provision for income taxes. We do not consider an allocation of these items to be practical. Our Equity in earnings (losses) of unconsolidated affiliates is part of our Subsea Projects segment.

Summary Of Major Accounting P_2

Summary Of Major Accounting Policies (Policy)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation . Oceaneering International, Inc. ("Oceaneering," "we" or "us") has prepared these unaudited consolidated financial statements pursuant to instructions for quarterly reports on Form 10-Q, which we are required to file with the U.S. Securities and Exchange Commission (the "SEC"). These financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP"). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position as of September 30, 2018 and our results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, all such adjustments are of a normal and recurring nature. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our annual report on Form 10-K for the year ended December 31, 2017 . The results for interim periods are not necessarily indicative of annual results.
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements include the accounts of Oceaneering and our 50% or more owned and controlled subsidiaries. We also consolidate entities that are determined to be variable interest entities if we determine that we are the primary beneficiary; otherwise, we account for those entities using the equity method of accounting. We use the equity method to account for our investments in unconsolidated affiliated companies of which we own an equity interest of between 20% and 50% and as to which we have significant influence, but not control, over operations. We use the cost method for all other long-term investments. Investments in entities that we do not consolidate are reflected on our balance sheet in Other non-current assets. All significant intercompany accounts and transactions have been eliminated.
Use Of Estimates	Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents. Cash and cash equivalents include demand deposits and highly liquid investments with original maturities of three months or less from the date of investment.
Accounts Receivable	Accounts Receivable – Allowances for Doubtful Accounts. We determine the need for allowances for doubtful accounts using the specific identification method. We generally do not require collateral from our customers.
Inventory	Inventory . Inventory is valued at the lower of cost or net realizable value. We determine cost using the weighted-average method.
Property and Equipment	Property and Equipment and Long-Lived Intangible Assets. We provide for depreciation of property and equipment on the straight-line method over their estimated useful lives. We charge the costs of repair and maintenance of property and equipment to operations as incurred, while we capitalize the costs of improvements that extend asset lives or functionality. Upon the disposition of property and equipment, the related cost and accumulated depreciation accounts are relieved and any resulting gain or loss is included as an adjustment to cost of services and products. Intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their estimated useful lives. We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized $1.9 million and $1.1 million of interest in the three-month periods ended September 30, 2018 and 2017 , respectively, and $5.3 million and $3.3 million of interest in the nine-month periods ended September 30, 2018 and 2017 , respectively. We do not allocate general administrative costs to capital projects. Our management periodically, and upon the occurrence of a triggering event, reviews the realizability of our property and equipment and long-lived intangible assets to determine whether any events or changes in circumstances indicate that the carrying amounts of the assets may not be recoverable. For long-lived assets to be held and used, we base our evaluation on impairment indicators, such as the nature of the assets, the future economic benefits of the assets, any historical or future profitability measurements and other external market conditions or factors that may be present. If such impairment indicators are present or other factors exist that indicate that the carrying amount of an asset may not be recoverable, we determine whether an impairment has occurred through the use of an undiscounted cash flows analysis of the asset at the lowest level for which identifiable cash flows exist. If an impairment has occurred, we recognize a loss for the difference between the carrying amount and the fair value of the asset. For assets held for sale or disposal, the fair value of the asset is measured using fair market value less estimated costs to sell. Assets are classified as held-for-sale when we have a plan for disposal of certain assets and those assets meet the held for sale criteria.
Business Acquisitions	Business Acquisitions . We account for business combinations using the acquisition method of accounting, and, in each case, we allocate the acquisition price to the assets acquired and liabilities assumed based on their fair market values as of the date of acquisition. In March 2018, we acquired Ecosse Subsea Limited (“Ecosse”) for $68 million in cash. Headquartered in Aberdeen, Scotland, Ecosse builds and operates tools for seabed preparation, route clearance and trenching for the installation of submarine cables and pipelines. These services are offered on an integrated basis that includes vessels, ROVs and survey services. We have accounted for this acquisition by allocating the purchase price to the assets acquired and liabilities assumed based on their estimated fair values as of the date of acquisition. This purchase price allocation is preliminary and is subject to change upon completion of our valuation procedures. We have included Ecosse’s operations in our consolidated financial statements starting from the date of closing and its operating results are reflected in our Subsea Projects segment.
Disposition	Dispositions. In September 2018, we consummated the sale of our cost method investment in ASV Global, LLC for $15.1 million . The total consideration is subject to final working capital adjustments and customary holdbacks. The sale resulted in a pre-tax gain of $9.3 million , which is reflected in Other income (expense), net in our Consolidated Statement of Operations for the three- and nine-month periods ended September 30, 2018
Goodwill and Intangible Assets	Goodwill. Annually, we are required to evaluate our goodwill by performing a qualitative or quantitative impairment test. Under the qualitative approach and after assessing the totality of events or circumstances, we determine that it is more likely than not the fair value of a reporting unit is less than its carrying amount, we are required to perform the quantitative analysis to determine the fair value. We tested the goodwill attributable to each of our reporting units for impairment as of December 31, 2017 and concluded that there was no impairment. In addition to our annual evaluation of goodwill for impairment, upon the occurrence of a triggering event, we review our goodwill to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Translation. The functional currency for several of our foreign subsidiaries is the applicable local currency. Results of operations for foreign subsidiaries with functional currencies other than the U.S. dollar are translated into U.S. dollars using average exchange rates during the period. Assets and liabilities of these foreign subsidiaries are translated into U.S. dollars using the exchange rates in effect as of the balance sheet date, and the resulting translation adjustments are recognized, in accumulated other comprehensive income as a component of shareholders' equity. All foreign currency transaction gains and losses are recognized currently in the Consolidated Statements of Operations.
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition. On January 1, 2018, we adopted Accounting Standard Update ("ASU") 2014-09, " Revenue from Contracts with Customers, " which implemented Accounting Standards Codification Topic 606 ("ASC 606"). We have used the modified retrospective method applied to those contracts which were not completed as of January 1, 2018, and have utilized the practical expedient to reflect the effect on contract modifications in the aggregate. The cumulative effect of applying ASC 606 has been recognized as an adjustment to retained earnings as of January 1, 2018. The comparative information with respect to prior periods has not been retrospectively restated and continues to be reported under the accounting standards in effect for those periods. The cumulative effect of the changes made to our Consolidated Balance Sheet as of January 1, 2018 for the adoption of ASC 606 was as follows: (in thousands) Dec 31, 2017 Adjustments Due to ASC 606 Jan 1, 2018 Under ASC 606 Assets Accounts receivable $ 476,903 $ (163,963 ) $ 312,940 Contract assets — 171,956 171,956 Total accounts receivable 476,903 7,993 484,896 Inventory 215,282 (34,187 ) 181,095 Liabilities Accrued liabilities 350,258 (63,045 ) 287,213 Contract liabilities — 37,590 37,590 Total accrued liabilities 350,258 (25,455 ) 324,803 Other long-term liabilities 131,323 (202 ) 131,121 Equity Retained earnings 2,417,412 (537 ) 2,416,875 In accordance with the ASC 606 requirements, the impact of adoption on carryover contracts on our Consolidated Statement of Operations and Consolidated Balance Sheet was as follows: Consolidated Statement of Operations Nine Months Ended Sep 30, 2018 (in thousands) As Reported Under ASC 606 Effect of Change Balances Without Adoption of ASC 606 Revenue $ 1,414,387 $ 12,552 $ 1,426,939 Cost of services and products 1,318,196 14,042 1,332,238 Provision (benefit) for income taxes 70,317 (212 ) 70,105 Net income (loss) (148,188 ) (1,278 ) (149,466 ) Consolidated Balance Sheet Sep 30, 2018 (in thousands) As Reported Under ASC 606 Effect of Change Balances Without Adoption of ASC 606 Assets Accounts receivable $ 345,803 $ — $ 345,803 Unbilled accounts receivable — 221,657 221,657 Contract assets 233,402 (233,402 ) — Total accounts receivable 579,205 (11,745 ) 567,460 Inventory 189,119 19,359 208,478 Liabilities Accrued liabilities 338,272 (321 ) 337,951 Contract liabilities 26,286 8,683 34,969 Total accrued liabilities 364,558 8,362 372,920 Other long-term liabilities 163,722 (10 ) 163,712 Equity Retained earnings 2,268,687 (741 ) 2,267,946 All of our revenue is realized through contracts with customers. We recognize our revenue according to the contract type. On a daily basis, we recognize service revenue over time for contracts that provide for specific time, material and equipment charges, which we bill periodically, ranging from weekly to monthly. We use the input method to faithfully depict revenue recognition, because each day of service provided represents value to the customer. The performance obligations in these contracts are satisfied, and revenue is recognized, as the work is performed. We have used the expedient available to recognize revenue when the billing corresponds to the value realized by the customer where appropriate. We account for significant fixed-price contracts, mainly relating to our Subsea Products segment, and to a lesser extent in our Subsea Projects and Advanced Technologies segments, by recognizing revenue over time using an input, cost-to-cost measurement percentage-of-completion method. We use the input cost-to-cost method to faithfully depict revenue recognition. This commonly used method allows appropriate calculation of progress on our contracts. A performance obligation is satisfied as we create a product on behalf of the customer over the life of the contract. The remainder of our revenue is recognized at the point in time when control transfers to the customer, thus satisfying the performance obligation. We have elected to recognize the cost for freight and shipping as an expense when incurred. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by us from a customer, are excluded from revenue. In our service-based business lines, which principally charge on a day rate basis for services provided, there is no significant impact in the pattern of revenue and profit recognition as a result of implementation of ASC 606. In our product-based business lines, we expect impacts on the pattern of our revenue and profit recognition in our contracts using the percentage-of-completion method, as a result of the requirement to exclude uninstalled materials and significant inefficiencies from the measure of progress. This is most likely to occur in our Subsea Products segment. We apply judgment in the determination and allocation of transaction price to performance obligations, and the subsequent recognition of revenue, based on the facts and circumstances of each contract. We routinely review estimates related to our contracts and, where required, reflect revisions to profitability in earnings immediately. If an element of variable consideration has the potential for a significant future reversal of revenue, we will constrain that variable consideration to a level intended to remove the potential future reversal. If a current estimate of total contract cost indicates an ultimate loss on a contract, we recognize the projected loss in full when we determine it. In prior years, we have recorded adjustments to earnings as a result of revisions to contract estimates. We always strive to estimate our contract costs and profitability accurately. However, there could be significant adjustments to overall contract costs in the future, due to changes in facts and circumstances. In general, our payment terms consist of those services billed regularly as provided and those products delivered at a point in time, which are invoiced after the performance obligation is satisfied. Our product and service contracts with milestone payments due at agreed progress points during the contract are invoiced when those milestones are reached, which may differ from the timing of revenue recognition. Our payment terms generally do not provide financing of contracts to customers, nor do we receive financing from customers as a result of these terms. Please see Note 2 — "Revenue" — for more information on our revenue from contracts with customers. Revenue Recognition. On January 1, 2018, we adopted Accounting Standard Update ("ASU") 2014-09, " Revenue from Contracts with Customers, " which implemented Accounting Standards Codification Topic 606 ("ASC 606"). We have used the modified retrospective method applied to those contracts which were not completed as of January 1, 2018, and have utilized the practical expedient to reflect the effect on contract modifications in the aggregate. The cumulative effect of applying ASC 606 has been recognized as an adjustment to retained earnings as of January 1, 2018. The comparative information with respect to prior periods has not been retrospectively restated and continues to be reported under the accounting standards in effect for those periods.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Standards . In January 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-01, "Financial Instruments — Overall (Subtopic 825-10) Recognition and Measurement of Financial Assets and Financial Liabilities." This update: • requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value, with changes in fair value recognized in net income; and • provides an expedient for the valuation and impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify value and impairment — when a qualitative assessment indicates that an impairment exists, an entity is required to measure the investment at fair value. ASU No. 2016-01 was effective for us beginning on January 1, 2018, and we have utilized the expedient for valuing equity investments without readily determinable fair values. This update has not had a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases," which requires reporting entities to separate the lease components from the non-lease components in a contract unless certain practical expedients are elected. This update also requires reporting entities to recognize lease assets and lease liabilities on the balance sheet for substantially all lease arrangements. In July 2018, the FASB issued ASU No. 2018-011, an amendment to ASU 2016-02 (collectively, the “New Leases Standard”), which provides entities with an additional and optional transition method to adopt the new standard. The amendments in this ASU also provide lessors with a practical expedient to not separate nonlease components from associated lease component and to account for those components as a single component if the required conditions are met. We have evaluated the impact of this amendment on the financial statements. The New Leases Standard will become effective for us beginning January 1, 2019. We intend to use the optional transition method that allows us to apply the New Leases Standard at the effective date prospectively without restating the prior periods presented. A cumulative-effect adjustment will be recognized to the opening balance of retained earnings in the period of adoption. We plan to elect the package of practical expedients that permit us to retain the identification and classification of leases under the previous accounting guidance, to keep the leases with an initial term of twelve months or less off the balance sheet, and to not separate nonlease components from associated lease components for both lessee and lessor leases. We have identified that there will be a material increase in both assets and liabilities resulting from the adoption of the New Leases Standard, predominantly from real estate operating leases, which were not required to be recognized on the balance sheet under the previous lease standard. We will complete all of the required work to assess our position, create the necessary policy, procedures and controls and calculate the effect of applying the New Leases Standard at the date of initial application in line with the timeline and requirements of the standard. In October 2016, the FASB issued ASU 2016-16, "Income Taxes (Topic 740) – Intra-Entity Transfers of Assets Other than Inventory." Previously, U.S. GAAP generally prohibited the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset was sold to an outside party. The amendments in this update eliminate the exception for an intra-entity transfer of an asset other than inventory. Two common examples of assets included within the scope of this update are intellectual property and property, plant and equipment. The exception for an intra-entity transfer of inventory will remain in place. The amendments in this update were effective for us beginning January 1, 2018. This ASU has not had a material effect on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the December 2017 enactment of U.S. tax reform legislation commonly referred to as the Tax Cuts and Jobs Act (the "Tax Act"). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. The amendments in this update also require certain disclosures about stranded tax effects. The amendments in this update will become effective for us beginning January 1, 2019, and early adoption is permitted. We do not anticipate that this ASU will have a material effect on our consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, "Compensation – Stock Compensation (Topic 718) Improvements to Nonemployee Share-Based Payment Accounting." This ASU expands the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. The amendments in this ASU will become effective for us beginning January 1, 2019, and early adoption is permitted. We do not anticipate that this ASU will have a material effect on our consolidated financial statements.

Summary Of Major Accounting P_3

Summary Of Major Accounting Policies Summary of Major Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block]	The cumulative effect of the changes made to our Consolidated Balance Sheet as of January 1, 2018 for the adoption of ASC 606 was as follows: (in thousands) Dec 31, 2017 Adjustments Due to ASC 606 Jan 1, 2018 Under ASC 606 Assets Accounts receivable $ 476,903 $ (163,963 ) $ 312,940 Contract assets — 171,956 171,956 Total accounts receivable 476,903 7,993 484,896 Inventory 215,282 (34,187 ) 181,095 Liabilities Accrued liabilities 350,258 (63,045 ) 287,213 Contract liabilities — 37,590 37,590 Total accrued liabilities 350,258 (25,455 ) 324,803 Other long-term liabilities 131,323 (202 ) 131,121 Equity Retained earnings 2,417,412 (537 ) 2,416,875 In accordance with the ASC 606 requirements, the impact of adoption on carryover contracts on our Consolidated Statement of Operations and Consolidated Balance Sheet was as follows: Consolidated Statement of Operations Nine Months Ended Sep 30, 2018 (in thousands) As Reported Under ASC 606 Effect of Change Balances Without Adoption of ASC 606 Revenue $ 1,414,387 $ 12,552 $ 1,426,939 Cost of services and products 1,318,196 14,042 1,332,238 Provision (benefit) for income taxes 70,317 (212 ) 70,105 Net income (loss) (148,188 ) (1,278 ) (149,466 ) Consolidated Balance Sheet Sep 30, 2018 (in thousands) As Reported Under ASC 606 Effect of Change Balances Without Adoption of ASC 606 Assets Accounts receivable $ 345,803 $ — $ 345,803 Unbilled accounts receivable — 221,657 221,657 Contract assets 233,402 (233,402 ) — Total accounts receivable 579,205 (11,745 ) 567,460 Inventory 189,119 19,359 208,478 Liabilities Accrued liabilities 338,272 (321 ) 337,951 Contract liabilities 26,286 8,683 34,969 Total accrued liabilities 364,558 8,362 372,920 Other long-term liabilities 163,722 (10 ) 163,712 Equity Retained earnings 2,268,687 (741 ) 2,267,946

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue [Abstract]
Revenue from External Customers by Geographic Areas [Table Text Block]	Geographic Operating Areas: Foreign: Africa $ 51,669 $ 57,901 $ 61,966 $ 168,722 $ 213,172 United Kingdom 56,769 48,074 50,999 153,087 189,534 Norway 51,952 54,412 51,827 142,820 128,965 Asia and Australia 39,764 50,407 43,448 122,158 147,555 Brazil 14,554 7,862 13,461 46,844 25,807 Other 45,898 23,192 14,811 80,348 54,540 Total Foreign 260,606 241,848 236,512 713,979 759,573 United States 258,694 234,272 242,162 700,408 677,759 Total $ 519,300 $ 476,120 $ 478,674 $ 1,414,387 $ 1,437,332
Revenue by Timing of Transfer of Goods or Services [Table Text Block]	Sep 30, 2018 Timing of Transfer of Goods or Services: Revenue recognized over time $ 1,297,095 Revenue recognized at a point in time 117,292 Total $ 1,414,387
Revenue from External Customers by Products and Services [Table Text Block]	The following table presents Revenue disaggregated by business segment, geographical region, and timing of transfer of goods or services. Three Months Ended Nine Months Ended (in thousands) Sep 30, 2018 Sep 30, 2017 Jun 30, 2018 Sep 30, 2018 Sep 30, 2017 Business Segment: Energy Services and Products Remotely Operated Vehicles $ 105,045 $ 104,617 $ 107,426 $ 298,065 $ 302,071 Subsea Products 137,099 143,583 121,704 385,491 469,115 Subsea Projects 104,972 80,116 78,036 239,868 218,617 Asset Integrity 62,346 61,098 67,422 191,056 171,948 Total Energy Services and Products 409,462 389,414 374,588 1,114,480 1,161,751 Advanced Technologies 109,838 86,706 104,086 299,907 275,581 Total $ 519,300 $ 476,120 $ 478,674 $ 1,414,387 $ 1,437,332

Inventory (Tables)

Inventory (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventory [Table Text Block]	(in thousands) Sep 30, 2018 Dec 31, 2017 Inventory, net: Remotely operated vehicle parts and components $ 105,956 $ 97,313 Other inventory, primarily raw materials 83,163 117,969 Total $ 189,119 $ 215,282

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Instrument [Line Items]
Schedule of Debt [Table Text Block]	Long-term Debt consisted of the following: (in thousands) Sep 30, 2018 Dec 31, 2017 4.650% Senior Notes due 2024 $ 500,000 $ 500,000 6.000% Senior Notes due 2028 300,000 — Term Loan Facility — 300,000 Fair value of interest rate swaps on $200 million of principal (9,717 ) (2,990 ) Unamortized debt issuance costs (8,093 ) (4,698 ) Revolving Credit Facility — — Long-term Debt $ 782,190 $ 792,312

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Summary of Income Tax Examinations	The following lists the earliest tax years open to examination by tax authorities where we have significant operations: Jurisdiction Periods United States 2014 United Kingdom 2015 Norway 2015 Angola 2013 Brazil 2013 Australia 2013

Business Segment Information (T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting, Measurement Disclosures [Abstract]
Financial Data By Business Segment	The table that follows presents Revenue, Income (Loss) from Operations and Depreciation and Amortization by business segment for each of the periods indicated. Three Months Ended Nine Months Ended (in thousands) Sep 30, 2018 Sep 30, 2017 Jun 30, 2018 Sep 30, 2018 Sep 30, 2017 Revenue Energy Services and Products Remotely Operated Vehicles $ 105,045 $ 104,617 $ 107,426 $ 298,065 $ 302,071 Subsea Products 137,099 143,583 121,704 385,491 469,115 Subsea Projects 104,972 80,116 78,036 239,868 218,617 Asset Integrity 62,346 61,098 67,422 191,056 171,948 Total Energy Services and Products 409,462 389,414 374,588 1,114,480 1,161,751 Advanced Technologies 109,838 86,706 104,086 299,907 275,581 Total $ 519,300 $ 476,120 $ 478,674 $ 1,414,387 $ 1,437,332 Income (Loss) from Operations Energy Services and Products Remotely Operated Vehicles $ 772 $ 5,009 $ 4,542 $ 2,916 $ 21,310 Subsea Products 5,367 12,383 2,295 9,417 34,418 Subsea Projects 6,088 6,512 (10,358 ) (6,629 ) 9,699 Asset Integrity 2,275 3,050 3,357 7,311 9,072 Total Energy Services and Products 14,502 26,954 (164 ) 13,015 74,499 Advanced Technologies 8,960 6,602 7,886 18,514 19,260 Unallocated Expenses (25,014 ) (23,025 ) (27,359 ) (79,867 ) (73,988 ) Total $ (1,552 ) $ 10,531 $ (19,637 ) $ (48,338 ) $ 19,771 Depreciation and Amortization Energy Services and Products Remotely Operated Vehicles $ 27,428 $ 28,269 $ 28,269 $ 83,339 $ 86,534 Subsea Products 12,349 13,340 14,914 41,288 39,124 Subsea Projects 7,464 7,881 13,053 28,830 23,742 Asset Integrity 1,635 2,139 1,836 5,319 5,379 Total Energy Services and Products 48,876 51,629 58,072 158,776 154,779 Advanced Technologies 792 796 737 2,295 2,377 Unallocated Expenses 1,035 1,088 1,034 3,603 3,324 Total $ 50,703 $ 53,513 $ 59,843 $ 164,674 $ 160,480

Summary Of Major Accounting P_4

Summary Of Major Accounting Policies - Principles of Consolidation And Repurchases (Details)	Sep. 30, 2018
Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Percentage	50.00%
Equity Method Investment, Ownership Interest Threshold For Consolidation, Percentage	20.00%
Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Interest Threshold For Consolidation, Percentage	50.00%

Summary Of Major Accounting P_5

Summary Of Major Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounting Policies [Abstract]
Interest Costs, Capitalized During Period	$ 1,896	$ 1,100	$ 5,305	$ 3,331

Summary Of Major Accounting P_6

Summary Of Major Accounting Policies Business Combination Disclosure (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 68,398	$ 11,278

Summary Of Major Accounting P_7

Summary Of Major Accounting Policies Summary of Major Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Interest Costs, Capitalized During Period	$ 1,896		$ 1,100	$ 5,305	$ 3,331
Accounts receivable, billed	345,803			345,803
Revenues	519,300	$ 478,674	476,120	1,414,387	1,437,332
Revenue, adjusted				1,426,939
effect of change, revenue				12,552
Cost of Goods and Services Sold	471,665		421,235	1,318,196	1,284,021
Cost of services and products, adjusted				1,332,238
Effect of change, cost of services and products				14,042
Income Tax Expense (Benefit)	61,135		3,935	70,317	4,104
Income taxes, adjusted				70,105
Net Income (Loss) Attributable to Parent				(148,188)
Effect of change, income taxes				(212)
Accounts Receivable, Net, Current	579,205			579,205			$ 476,903
Effect of change, total accounts receivable	(11,745)			(11,745)		$ 7,993
Effect of change, accounts receivable	0			0		(163,963)
Total accounts receivable, adjusted	567,460			567,460		484,896
Accounts receivable, adjusted	345,803			345,803		312,940
Inventory, Net	189,119			189,119			215,282
Inventory, adjusted	208,478			208,478		181,095
Accrued liabilities, excluding deferred revenue	338,272			338,272
Unbilled Receivables, Current	0			0		171,956	0
Contract assets, current, adjusted	0			0
Unbilled accounts receivable, current, adjusted	221,657			221,657
Contract assets, current	233,402			233,402
Effect of change, contract assets	(233,402)			(233,402)
Effect of change, unbilled accounts receivable	221,657			221,657
Inventory, Gross							215,282
Accrued Liabilities, Current	364,558			364,558			350,258
Accrued liabilities, (excl deferred revenue) adjusted	337,951			337,951		287,213
Total accrued liabilities, adjusted	372,920			372,920		324,803
Effect of change, accrued liabilities	(321)			(321)		(63,045)
Effect of change, total accrued liabilities	8,362			8,362		(25,455)
Deferred Revenue	26,286			26,286		37,590	0
Effect of change, deferred revenue	8,683			8,683
Deferred revenue without adoption of ASC 606	34,969			34,969
Effect of change, inventory	19,359			19,359		(34,187)
Other Liabilities, Noncurrent	163,722			163,722			131,323
Other long-term liabilities, adjusted	163,712			163,712		131,121
Effect of change, other long -term liabilities	(10)			(10)		(202)
Retained Earnings (Accumulated Deficit)	2,268,687			2,268,687		2,416,875	$ 2,417,412
Effect of change, retained earnings	(741)			(741)		$ (537)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(65,979)		$ (1,768)	(148,188)	$ (7,170)
Effect of change, Net Income				(1,278)
Retained earnings, adjusted	$ 2,267,946			2,267,946
Net income, adjusted				$ (149,466)

Revenue Revenue by Timing of Tr

Revenue Revenue by Timing of Transfer of Goods or Services (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue Recognition [Abstract]
Revenue over time				$ 1,297,095
Revenue at a point in time				117,292
Revenues	$ 519,300	$ 478,674	$ 476,120	$ 1,414,387	$ 1,437,332

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenues	$ 519,300	$ 478,674	$ 476,120	$ 1,414,387	$ 1,437,332
Rovs Member
Segment Reporting Information [Line Items]
Revenues	105,045	107,426	104,617	298,065	302,071
Subsea Products Member
Segment Reporting Information [Line Items]
Revenues	137,099	121,704	143,583	385,491	469,115
Subsea Projects Member
Segment Reporting Information [Line Items]
Revenues	104,972	78,036	80,116	239,868	218,617
Asset Integrity [Member]
Segment Reporting Information [Line Items]
Revenues	62,346	67,422	61,098	191,056	171,948
Oil And Gas [Member]
Segment Reporting Information [Line Items]
Revenues	409,462	374,588	389,414	1,114,480	1,161,751
Advanced Technologies Member
Segment Reporting Information [Line Items]
Revenues	$ 109,838	$ 104,086	$ 86,706	$ 299,907	$ 275,581

Revenue by Geographic Area (Det

Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue by Geographic Area [Line Items]
Revenues	$ 519,300	$ 478,674	$ 476,120	$ 1,414,387	$ 1,437,332
Africa [Member]
Revenue by Geographic Area [Line Items]
Revenues	51,669	61,966	57,901	168,722	213,172
UNITED KINGDOM
Revenue by Geographic Area [Line Items]
Revenues	56,769	50,999	48,074	153,087	189,534
NORWAY
Revenue by Geographic Area [Line Items]
Revenues	51,952	51,827	54,412	142,820	128,965
Asia Pacific [Member]
Revenue by Geographic Area [Line Items]
Revenues	39,764	43,448	50,407	122,158	147,555
BRAZIL
Revenue by Geographic Area [Line Items]
Revenues	14,554	13,461	7,862	46,844	25,807
Segment, Geographical, Groups of Countries, Group Three [Member]
Revenue by Geographic Area [Line Items]
Revenues	45,898	14,811	23,192	80,348	54,540
Segment, Geographical, Groups of Countries, Foreign [Member]
Revenue by Geographic Area [Line Items]
Revenues	260,606	236,512	241,848	713,979	759,573
UNITED STATES
Revenue by Geographic Area [Line Items]
Revenues	$ 258,694	$ 242,162	$ 234,272	$ 700,408	$ 677,759

Revenue Contract balances (Deta

Revenue Contract balances (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue Recognition [Abstract]
Contract assets, current				$ 61,400
Revenue recognized but unbilled				1,387,000
Unbilled Receivables, Current	$ 0			0		$ 171,956	$ 0
Deferred Revenue	26,286			26,286		$ 37,590	$ 0
Billing for the reporting period				(1,325,000)
Revenue Recognition, Milestone Method, Revenue Recognized				27,700
Revenues	$ 519,300	$ 478,674	$ 476,120	1,414,387	$ 1,437,332
Deferrals of customer payments				16,400
increase or decrease in contract liability balance, current				$ (11,300)

Revenue Performance obligation

Revenue Performance obligation (Details) $ in Millions	Sep. 30, 2018USD ($)
Revenue Recognition [Abstract]
Revenue Recognition for Remaining Performance Obligations	$ 223
Price Allocated to Remaining Performance Obligations	$ 276

Revenue Costs to obtain or fulf

Revenue Costs to obtain or fulfill a contract (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2018USD ($)
Revenue Recognition [Abstract]
Costs to fulfill a contract	$ 12.7	$ 12.7
Amortization of costs to fulfill a contract	$ 2.6	$ 5.1

Inventory (Details)

Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventory for remotely operated vehicles	$ 105,956	$ 97,313
Other inventory, primarily raw materials	83,163	117,969
Total	$ 189,119	$ 215,282

Debt - Long-Term Debt (Details)

Debt - Long-Term Debt (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2014	Sep. 30, 2018	Feb. 01, 2018	Dec. 31, 2017	Nov. 21, 2014
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			6.00%			4.65%
Payments of Debt Issuance Costs	$ 4,200	$ 6,900
Notes Payable, Fair Value Disclosure			$ 790,000
4.650% Senior Notes due 2024			500,000		$ 500,000	$ 500,000
Senior Notes 2028			300,000	$ 300,000	0
Unamortized Debt Issuance Expense			(8,093)		(4,698)
Fair Value Hedge Liabilities			(9,717)		(2,990)
Loans Payable to Bank			0		300,000
Revolving credit facility			0		0
Long-term Debt			$ 782,190		$ 792,312

Debt - Line of Credit (Details)

Debt - Line of Credit (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Dec. 31, 2014	Sep. 30, 2018
Line of Credit Facility [Line Items]
Line of Credit Facility, Available Additional Borrowing Capacity		$ 300
Payments of Financing Costs	$ 2.6
Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.125%
Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.30%
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 500
Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 300
Credit Agreement [Member] | Adjusted Base Rate Advances [Member] | Adjusted Base Rate [Member] | Federal Funds Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		0.50%
Credit Agreement [Member] | Adjusted Base Rate Advances [Member] | Adjusted Base Rate [Member] | Eurodollar Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		1.00%
Credit Agreement [Member] | Adjusted Base Rate Advances [Member] | Applicable Margin [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		0.125%
Credit Agreement [Member] | Adjusted Base Rate Advances [Member] | Applicable Margin [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		0.75%
Credit Agreement [Member] | Eurodollar Advances [Member] | Applicable Margin [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		1.125%
Credit Agreement [Member] | Eurodollar Advances [Member] | Applicable Margin [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		1.75%

Commitments And Contingencies -

Commitments And Contingencies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Cash and cash equivalents	$ 367,150		$ 367,150		$ 430,316	$ 472,381	$ 450,193
Document Fiscal Year Focus			2,018
Proceeds from Sale and Maturity of Available-for-sale Securities			$ 10,000
Proceeds from Sale of Available-for-sale Securities, Debt			62,021	$ 0
Derivative, Amount of Hedged Item	200,000		200,000
Fair Value Hedge Liabilities	(9,717)		(9,717)		(2,990)
Foreign Currency Transaction Gain (Loss), before Tax	(4,500)		(16,900)
Other income (expense), net	5,632	$ (1,287)	(6,398)	$ (3,901)
Loans Payable to Bank	0		0		300,000
Notes Payable, Fair Value Disclosure	790,000		790,000
Cash repatriated			57,000
Angola, Kwanza
Loss Contingencies [Line Items]
Cash and cash equivalents	13,786		13,786		$ 26,909
Fair Value, Inputs, Level 2 [Member]
Loss Contingencies [Line Items]
Proceeds from Sale of Available-for-sale Securities, Debt			51,900
Investments, Fair Value Disclosure	2,774		2,774
Available-for-sale Securities, Noncurrent	15,018		15,018
available-for-sale securities, noncurrent, mature in 2020	4,917		4,917
Available-for-sale securities, noncurrent, mature in 2023	10,101		10,101
Available-for-sales investments, amortized costs basis	$ 17,792		$ 17,792

Earnings Per Share, Stock-Bas_2

Earnings Per Share, Stock-Based Compensation and Share Repurchase Plan (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017	Dec. 12, 2014
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	1,474,642		1,474,642	1,181,805
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					10,000,000
Stock Repurchase Program, Total Number of Shares Repurchased To Date	2,000,000		2,000,000
Stock Repurchase Program, Total Shares Repurchased To Date, Amount	$ 100		$ 100
Restricted Stock Units (RSUs) [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	$ 13		$ 13
Restricted Stock Units (RSUs) [Member] | Minimum [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			1 year
Restricted Stock Units (RSUs) [Member] | Maximum [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			3 years
Dividend Declared [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.15	$ 0.27

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Operating Loss Carryforwards [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions	$ 56.5	$ 60.1
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	7.9
Unrecognized Tax Benefits, Probability Threshold of Realizing for Tax Benefits Recognition, Minimum Percentage		50.00%
Unrecognized Tax Benefits, Including Foreign Tax Credits and Penalties and Interest	$ 10.4	$ 10.4
Federal statutory tax rate		21.00%	35.00%

Income Taxes - Summary Of Earli

Income Taxes - Summary Of Earliest Tax Years Open To Examination (Details)	9 Months Ended
	Sep. 30, 2018
United States [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2,014
United Kingdom [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2,015
Norway [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2,015
Angola [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2,013
Brazil [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2,013
Australia [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2,013

Income Taxes Discrete tax benef

Income Taxes Discrete tax benefits (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Discrete tax benefit and expense [Abstract]
Uncertain tax position		$ 4.8
Other discrete items	$ 5.9	8.3
Tax Adjustments, Settlements, and Unusual Provisions	$ 56.5	60.1
Valuation Allowances and Reserves, Additions for Adjustments		$ 39.1

Business Segment Information -

Business Segment Information - Financial Data By Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 519,300	$ 478,674	$ 476,120	$ 1,414,387	$ 1,437,332
Income from Operations	(1,552)	(19,637)	10,531	(48,338)	19,771
Depreciation and amortization	50,703	59,843	53,513	164,674	160,480
Oil And Gas [Member]
Segment Reporting Information [Line Items]
Revenue	409,462	374,588	389,414	1,114,480	1,161,751
Income from Operations	14,502	(164)	26,954	13,015	74,499
Depreciation and amortization	48,876	58,072	51,629	158,776	154,779
ROVs [Member]
Segment Reporting Information [Line Items]
Revenue	105,045	107,426	104,617	298,065	302,071
Income from Operations	772	4,542	5,009	2,916	21,310
Depreciation and amortization	27,428	28,269	28,269	83,339	86,534
Subsea Products Member
Segment Reporting Information [Line Items]
Revenue	137,099	121,704	143,583	385,491	469,115
Income from Operations	5,367	2,295	12,383	9,417	34,418
Depreciation and amortization	12,349	14,914	13,340	41,288	39,124
Subsea Projects [Member]
Segment Reporting Information [Line Items]
Revenue	104,972	78,036	80,116	239,868	218,617
Income from Operations	6,088	(10,358)	6,512	(6,629)	9,699
Depreciation and amortization	7,464	13,053	7,881	28,830	23,742
Asset Integrity [Member]
Segment Reporting Information [Line Items]
Revenue	62,346	67,422	61,098	191,056	171,948
Income from Operations	2,275	3,357	3,050	7,311	9,072
Depreciation and amortization	1,635	1,836	2,139	5,319	5,379
Advanced Technologies [Member]
Segment Reporting Information [Line Items]
Revenue	109,838	104,086	86,706	299,907	275,581
Income from Operations	8,960	7,886	6,602	18,514	19,260
Depreciation and amortization	792	737	796	2,295	2,377
Unallocated Expenses [Member]
Segment Reporting Information [Line Items]
Income from Operations	(25,014)	(27,359)	(23,025)	(79,867)	(73,988)
Depreciation and amortization	$ 1,035	$ 1,034	$ 1,088	$ 3,603	$ 3,324

Summary of Major Accounting P_8

Summary of Major Accounting Policies - Disposition (Details) $ in Millions	3 Months Ended
	Sep. 30, 2018USD ($)
Investment schedule [Abstract]
Proceeds from Sale of Other Investments	$ 15.1
Gain (Loss) on Disposition of Assets	$ 9.3

Disposition (Details)

Disposition (Details) $ in Millions	3 Months Ended
	Sep. 30, 2018USD ($)
Accounting Policies Cost Method Investment [Abstract]
Gain (Loss) on Disposition of Assets	$ 9.3