Summary Of Major Accounting Policies (Policy)	9 Months Ended
Sep. 30, 2019
Accounting Policies [Abstract]
Cost Method Investments, Policy [Policy Text Block]	Dispositions. In September 2018, we consummated the sale of our cost method investment in ASV Global, LLC for $15 million. The sale resulted in a pre-tax gain of $9.3 million, which is reflected in other income (expense), net in our Consolidated Statements of Operations for the three- and nine-month periods ended September 30, 2018.
Goodwill	Goodwill. We evaluate our goodwill annually in December and more frequently, on an interim basis, if events occur or circumstances change that would indicate the carrying amount may be impaired, by performing a qualitative or quantitative impairment test. Under the qualitative approach and after assessing the totality of events or circumstances, if we determine that it is more likely than not that 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 for that reporting unit. In the fourth quarter of 2018, we were required to perform a quantitative analysis for our Subsea Projects Segment and determined that the fair value was less than the carrying value and, as a result, we recorded a pre-tax goodwill impairment loss of $76 million in the Subsea Projects reporting unit. For the remaining reporting units, qualitative assessments were performed; and we concluded that it was more likely than not the fair value of the reporting unit was more than the carrying value of the reporting unit and, therefore, no impairment was required. 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.
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 United States 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, 2019 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, 2018. 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 noncurrent 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 assets included in 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 no interest and $1.9 million of interest in the three-month periods ended September 30, 2019 and 2018, respectively, and $3.4 million and $5.3 million of interest in the in the nine-month periods ended September 30, 2019 and 2018, 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, remotely operated vehicles ("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. 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.
Foreign Currency Translations	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 (loss) as a component of shareholders' equity. All foreign currency transaction gains and losses are recognized currently in the Consolidated Statements of Operations.
Revenue Recognition	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 applied the modified retrospective method to those contracts that were not completed as of January 1, 2018, and utilized the practical expedient to reflect the effect on contract modifications in the aggregate. The adoption of this ASU resulted in an after-tax cumulative effect adjustment of $0.5 million recorded to retained earnings as of January 1, 2018. 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, and that are collected by us from customers, are excluded from revenue. In our service-based business lines, which principally charge on a dayrate 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 have seen 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 occurs predominantly 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; however, we did not have any material adjustments during the nine months ended September 30, 2019 and 2018. 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. See Note 2—"Revenue" for more information on our revenue from contracts with customers.
Leases	On January 1, 2019 we adopted ASU 2016-02, "Leases (Topic 842"), which requires lessees to recognize right-of-use assets ("ROU assets") and lease liabilities for virtually all leases and updates previous accounting standards for lessors to align certain requirements of the new leases standard and the revenue recognition accounting standard. We elected to apply the transition method that allowed us to apply this update at the adoption date and adopted the package of practical expedients that permitted us to retain the identification and classification of leases made under the previously applicable accounting standards. The adoption of this ASU as of January 1, 2019 resulted in a cumulative effect adjustment of $5.9 million recorded to retained earnings, with corresponding adjustments to increase ROU assets and lease liabilities by $185 million and $191 million, respectively. The adoption of this ASU did not materially affect our net earnings and had no impact on cash flows. 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. As a lessee, we utilize the expedients to not recognize leases with an initial lease term of 12 months or less on the balance sheet and to combine lease and non-lease components together and account for the combined component as a lease for all asset classes, except real estate. As a lessor, we lease certain types of equipment along with the provision of services and utilize the expedient allowing us to combine the lease and non-lease components into a combined component that is accounted for under ASC 842 where the lease component is predominant and under ASC 606 where the service component is predominant. In general, wherever we have a service component, this is typically the predominant element and leads to accounting under ASC 606. We determine whether a contract is or contains a lease at inception, whether as a lessee or a lessor. We take into consideration the elements of an identified asset, right to control and the receipt of economic benefit in making these determinations. As a lessee, we lease land, buildings, vessels and equipment for the operation of our business and to support some of our service line revenue streams. These generally carry lease terms that range from days for operational and support equipment to 20 years for land and buildings. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our discretion. When the exercise of those options is reasonably certain, we include them in the lease assessment. Our leases do not contain material restrictions or covenants that impact our accounting for them, nor do we provide residual value guarantees. As a lessor, we lease certain types of equipment, often providing services at the same time. These leases can be priced on a dayrate or lump-sum basis for periods ranging from a few days to multi-year contracts. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our customers sole discretion. These leases generally do not contain options to purchase, material restrictions or covenants that impact our accounting for leases. ROU operating lease assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement or modification date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate, based on the information available at commencement or modification date in determining the present value of future payments. In determining the incremental borrowing rate, we considered our external credit ratings, bond yields for us and our identified peers, the risk-free rate in geographic regions where we operate and the impact associated with providing collateral over a similar term as the lease for an amount equal to the lease payments. Our ROU operating lease assets also include any lease prepayments made and exclude lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.
New Accounting Standards	New Accounting Standards. In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, "Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments," as modified by subsequently issued ASU 2018-19, ASU 2019-04 and ASU 2019-05. The guidance introduces a new credit reserving model known as the Current Expected Credit Loss ("CECL") model, which is based on expected losses, and differs significantly from the incurred loss approach used today. The CECL model requires estimating all expected credit losses for certain types of financial instruments, including trade receivables and contract assets, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. These ASUs affect an entity to varying degrees depending on the credit quality for the assets held by the entity, their duration and how the entity applies current U.S. GAAP. These ASUs will become effective for us beginning January 1, 2020. We have formed a project team to review these requirements and ensure that we meet the required implementation date. We continue to assess the impact of this guidance and are in the process of pooling our customers by their associated risk factors and evaluating our historical experience associated with credit losses. In August 2017, the FASB issued ASU No. 2017-12 "Derivatives and Hedging (Topic 815): Targeted improvements to Accounting for Hedging Activities," which simplified the application of hedge accounting guidance in current U.S. GAAP and improved the reporting of hedging relationships to better portray the economic results of our risk management activities in our consolidated financial statements. Our adoption of this ASU on January 1, 2019 did not have a material impact 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 were effective for us beginning January 1, 2019. This ASU has not had 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 became effective for us beginning January 1, 2019. This ASU has not had a material effect on our consolidated financial statements.

Summary Of Major Accounting Policies (Policy)

9 Months Ended

Sep. 30, 2019

Cost Method Investments, Policy [Policy Text Block]

Dispositions. In September 2018, we consummated the sale of our cost method investment in ASV Global, LLC for $15 million. The sale resulted in a pre-tax gain of $9.3 million, which is reflected in other income (expense), net in our Consolidated Statements of Operations for the three- and nine-month periods ended September 30, 2018.

Goodwill

Goodwill. We evaluate our goodwill annually in December and more frequently, on an interim basis, if events occur or circumstances change that would indicate the carrying amount may be impaired, by performing a qualitative or quantitative impairment test. Under the qualitative approach and after assessing the totality of events or circumstances, if we determine that it is more likely than not that 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 for that reporting unit. In the fourth quarter of 2018, we were required to perform a quantitative analysis for our Subsea Projects Segment and determined that the fair value was less than the carrying value and, as a result, we recorded a pre-tax goodwill impairment loss of $76 million in the Subsea Projects reporting unit. For the remaining reporting units, qualitative assessments were performed; and we concluded that it was more likely than not the fair value of the reporting unit was more than the carrying value of the reporting unit and, therefore, no impairment was required.

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.

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 United States 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, 2019 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, 2018. 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 noncurrent 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 assets included in 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 no interest and $1.9 million of interest in the three-month periods ended September 30, 2019 and 2018, respectively, and $3.4 million and $5.3 million of interest in the in the nine-month periods ended September 30, 2019 and 2018, 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, remotely operated vehicles ("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. 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.

Foreign Currency Translations

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 (loss) as a component of shareholders' equity. All foreign currency transaction gains and losses are recognized currently in the Consolidated Statements of Operations.

Revenue Recognition

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 applied the modified retrospective method to those contracts that were not completed as of January 1, 2018, and utilized the practical expedient to reflect the effect on contract modifications in the aggregate. The adoption of this ASU resulted in an after-tax cumulative effect adjustment of $0.5 million recorded to retained earnings as of January 1, 2018.

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, and that are collected by us from customers, are excluded from revenue.

In our service-based business lines, which principally charge on a dayrate 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 have seen 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 occurs predominantly 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; however, we did not have any material adjustments during the nine months ended September 30, 2019 and 2018. 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.

See Note 2—"Revenue" for more information on our revenue from contracts with customers.

Leases

On January 1, 2019 we adopted ASU 2016-02, "Leases (Topic 842"), which requires lessees to recognize right-of-use assets ("ROU assets") and lease liabilities for virtually all leases and updates previous accounting standards for lessors to align certain requirements of the new leases standard and the revenue recognition accounting standard. We elected to apply the transition method that allowed us to apply this update at the adoption date and adopted the package of practical expedients that permitted us to retain the identification and classification of leases made under the previously applicable accounting standards. The adoption of this ASU as of January 1, 2019 resulted in a cumulative effect adjustment of $5.9 million recorded to retained earnings, with corresponding adjustments to increase ROU assets and lease liabilities by $185 million and $191 million, respectively. The adoption of this ASU did not materially affect our net earnings and had no impact on cash flows. 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.

As a lessee, we utilize the expedients to not recognize leases with an initial lease term of 12 months or less on the balance sheet and to combine lease and non-lease components together and account for the combined component as a lease for all asset classes, except real estate.

As a lessor, we lease certain types of equipment along with the provision of services and utilize the expedient allowing us to combine the lease and non-lease components into a combined component that is accounted for under ASC 842 where the lease component is predominant and under ASC 606 where the service component is predominant. In general, wherever we have a service component, this is typically the predominant element and leads to accounting under ASC 606.

We determine whether a contract is or contains a lease at inception, whether as a lessee or a lessor. We take into consideration the elements of an identified asset, right to control and the receipt of economic benefit in making these determinations.

As a lessee, we lease land, buildings, vessels and equipment for the operation of our business and to support some of our service line revenue streams. These generally carry lease terms that range from days for operational and support equipment to 20 years for land and buildings. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our discretion. When the exercise of those options is reasonably certain, we include them in the lease assessment. Our leases do not contain material restrictions or covenants that impact our accounting for them, nor do we provide residual value guarantees.

As a lessor, we lease certain types of equipment, often providing services at the same time. These leases can be priced on a dayrate or lump-sum basis for periods ranging from a few days to multi-year contracts. These leases are negotiated on commercial terms at market rates and many carry standard options to extend or terminate at our customers sole discretion. These leases generally do not contain options to purchase, material restrictions or covenants that impact our accounting for leases.

ROU operating lease assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement or modification date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate, based on the information available at commencement or modification date in determining the present value of future payments. In determining the incremental borrowing rate, we considered our external credit ratings, bond yields for us and our identified peers, the risk-free rate in geographic regions where we operate and the impact associated with providing collateral over a similar term as the lease for an amount equal to the lease payments. Our ROU operating lease assets also include any lease prepayments made and exclude lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.

New Accounting Standards

New Accounting Standards. In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, "Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments," as modified by subsequently issued ASU 2018-19, ASU 2019-04 and ASU 2019-05. The guidance introduces a new credit reserving model known as the Current Expected Credit Loss ("CECL") model, which is based on expected losses, and differs significantly from the incurred loss approach used today. The CECL model requires estimating all expected credit losses for certain types of financial instruments, including trade receivables and contract assets, held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. These ASUs affect an entity to varying degrees depending on the credit quality for the assets held by the entity, their duration and how the entity applies current U.S. GAAP. These ASUs will become effective for us beginning January 1, 2020. We have formed a project team to review these requirements and ensure that we meet the required implementation date. We continue to assess the impact of this guidance and are in the process of pooling our customers by their associated risk factors and evaluating our historical experience associated with credit losses.

In August 2017, the FASB issued ASU No. 2017-12 "Derivatives and Hedging (Topic 815): Targeted improvements to Accounting for Hedging Activities," which simplified the application of hedge accounting guidance in current U.S. GAAP and improved the reporting of hedging relationships to better portray the economic results of our risk management activities in our consolidated financial statements. Our adoption of this ASU on January 1, 2019 did not have a material impact 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 were effective for us beginning January 1, 2019. This ASU has not had 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 became effective for us beginning January 1, 2019. This ASU has not had a material effect on our consolidated financial statements.