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Summary of Significant Accounting Policies
12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Summary of Significant Accounting Policies
Note 1.  Summary of Significant Accounting Policies
Basis of presentation
 –
Loews Corporation is a holding company. Its subsidiaries are engaged in the following lines of business: commercial property and casualty insurance (CNA Financial Corporation (“CNA”), an 89% owned subsidiary); the operation of offshore oil and gas drilling rigs (Diamond Offshore Drilling, Inc. (“Diamond Offshore”), a 53% owned subsidiary); transportation and storage of natural gas and natural gas liquids (Boardwalk Pipeline Partners, LP (“Boardwalk Pipelines”), a wholly owned subsidiary); the operation of a chain of hotels (Loews Hotels Holding Corporation (“Loews Hotels & Co”), a wholly owned subsidiary); and the manufacture of rigid plastic packaging solutions (
Altium Packaging LLC
,
formerly known as Consolidated Container Company LLC
 (“
Altium Packaging
”), a 99%
owned subsidiary). Unless the context otherwise requires, (i) the terms “Company” and “Loews” as used herein mean Loews Corporation including its subsidiaries and (ii) the term “Net income (loss) attributable to Loews Corporation” as used herein means Net income (loss) attributable to Loews Corporation shareholders.
Principles of consolidation
– The Consolidated Financial Statements include all subsidiaries and intercompany accounts and transactions have been eliminated. The equity method of accounting is used for investments in associated companies in which the Company generally has an interest of 20% to 50%.
Accounting estimates
– The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and the related notes. Actual results could differ from those estimates.
Investments
– The Company classifies its fixed maturity securities as either
available-for-sale
or trading, and as such, they are carried at fair value. Short term investments are carried at fair value. Changes in fair value of trading securities are reported within Net investment income on the Consolidated Statements of Income. Changes in fair value related to
available-for-sale
securities are reported as a component of Other comprehensive income. 
The cost of fixed maturity securities classified as
available-for-sale
is adjusted for amortization of premiums and accretion of discounts, which are included in Net investment income on the Consolidated Statements of Income. The amortization of premium and accretion of discount for fixed maturity securities takes into consideration call and maturity dates that produce the lowest yield.
For asset-backed securities included in fixed maturity securities, the Company recognizes income using an effective yield based on anticipated prepayments and the estimated economic life of the securities. When estimates of prepayments change, the effective yield is recalculated to reflect actual payments to date and anticipated future payments.
To the extent that unrealized gains on fixed maturity securities supporting long term care products and structured settlements not funded by annuities would result in a premium deficiency if those gains were realized, a related increase in Insurance reserves is recorded, net of tax and noncontrolling interests, as a reduction of net unrealized gains through Other comprehensive income (“Shadow Adjustments”). Shadow Adjustments increased $1.0 
b
illion (after tax and noncontrolling interests) and decreased $298 million (after tax and noncontrolling interests) for the years ended December 31, 2019 and 2018. As of December 31, 2019 and 2018, net unrealized gains on investments included in Accumulated other comprehensive income (“AOCI”) were correspondingly reduced by Shadow Adjustments of $2.0 
b
illion and $964 million (after tax and noncontrolling interests).
Equity securities are carried at fair value. CNA’s
non-redeemable
preferred stock investments contain characteristics of debt securities, are priced similarly to bonds and are held primarily for income generation through periodic dividends. While recognition of gains and losses on these securities is not discretionary, CNA does not consider the changes in fair value of
non-redeemable
preferred stock to be reflective of its primary operations. As such, the changes in the fair value of these securities are recorded through Investment gains (losses). T
he Company owns certain common stock with the intention of holding the securities primarily for market appreciation and as such, the changes in the fair value of these securities are recorded through Net investment income (loss). Prior to 2018, a portfolio of equity securities w
as
 considered
available-for-sale
with changes in fair value reported as a component of Other comprehensive income (loss).
The Company’s carrying value of investments in limited partnerships is its share of the net asset value of each partnership, as determined by the general partner. Certain partnerships for which results are not available on a timely basis are reported on a lag, primarily three months or less. These investments are accounted for under the equity method and changes in net asset values are recorded within Net investment income on the Consolidated Statements of Income.
Mortgage loans are commercial in nature, are carried at unpaid principal balance, net of unamortized fees and any valuation allowance, and are recorded once funded. Interest income from mortgage loans is recognized on an accrual basis using the effective yield method. Mortgage loans are considered to be impaired loans when it is probable that contractual principal and interest payments will not be collected. CNA evaluates loans for impairment on an individual loan basis and identifies loans for evaluation of impairment based on the collection experience of each loan and other credit quality indicators such as debt service coverage ratio and the creditworthiness of the borrower or tenants of credit tenant loan properties. Accrual of income is generally suspended for mortgage loans that are impaired and collection of principal and interest payments is unlikely. Mortgage loans are considered past due when full principal or interest payments have not been received according to contractual terms. As of December 31, 2019 and 2018, there were no loans past due or in
non-accrual
status, and no valuation allowance was recorded.
Investments in derivative securities are carried at fair value with changes in fair value reported as a component of Investment gains (losses), Income (loss) from trading portfolio, or Other comprehensive income (loss), depending on their hedge designation. A derivative is typically defined as an instrument whose value is “derived” from an underlying instrument, index or rate, has a notional amount, requires little or no initial investment and can be net settled. Derivatives include, but are not limited to, the following types of investments: interest rate swaps, interest rate caps and floors, put and call options, warrants, futures, forwards, commitments to purchase securities, credit default swaps and combinations of the foregoing. Derivatives embedded within
non-derivative
instruments (such as call options embedded in convertible bonds) must be split from the host instrument when the embedded derivative is not clearly and closely related to the host instrument.
An
available-for-sale
security is impaired if the fair value of the security is less than its cost adjusted for accretion, amortization and previously recorded other-than-temporary impairment (“OTTI”) losses, otherwise defined as an unrealized loss. When a security is impaired, the impairment is evaluated to determine whether it is temporary or other-than-temporary.
 
When the decline in value is determined by the Company to be other-than-temporary, losses are recognized within Investment gains (losses) on the Consolidated Statements of Income.
Significant judgment is required in the determination of whether an OTTI loss has occurred for a security. CNA follows a consistent and systematic process for determining and recording an OTTI loss including the evaluation of securities in an unrealized loss position on at least a quarterly basis.
CNA’s assessment of whether an OTTI loss has occurred incorporates both quantitative and qualitative information. Fixed maturity securities that CNA intends to sell, or it more likely than not will be required to sell before recovery of amortized cost, are considered to be other-than-temporarily impaired and the entire difference between the amortized cost basis and fair value of the security is recognized as an OTTI loss in earnings. The remaining fixed maturity securities in an unrealized loss position are evaluated to determine if a credit loss exists. The factors considered include: (i) the financial condition and near term and long term prospects of the issuer, (ii) whether the debtor is current on interest and principal payments, (iii) credit ratings of the securities and (iv) general market conditions and industry or sector specific outlook. CNA also considers results and analysis of cash flow modeling for asset-backed securities, and when appropriate, other fixed maturity securities.
If the present value of the modeled expected cash flows equals or exceeds the amortized cost of a security, no credit loss is judged to exist and the asset-backed security is deemed to be temporarily impaired. If the present value of the expected cash flows is less than amortized cost, the security is judged to be other-than-temporarily impaired for credit reasons and that shortfall, referred to as the credit component, is recognized as an OTTI loss in earnings. The difference between the adjusted amortized cost basis and fair value, referred to as the
non-credit
component, is recognized as OTTI in Other comprehensive income. In subsequent reporting periods, a change in intent to sell or further credit impairment on a security whose fair value has not deteriorated will cause the
non-credit
component originally recorded as OTTI in Other comprehensive income to be recognized as an OTTI loss in earnings. Significant assumptions enter into these cash flow projections including delinquency rates, probable risk of default, loss severity upon a default, over collateralization and interest coverage triggers and credit support from lower level tranches.
Prior to 2018, CNA applied the same impairment model as described above for the majority of its
non-redeemable
preferred stock securities on the basis that these securities possess characteristics similar to debt securities. For all other equity securities, in determining whether the security was other-than-temporarily impaired, CNA considered a number of factors including, but not limited to: (i) the length of time and the extent to which the fair value has been less than amortized cost, (ii) the financial condition and near term prospects of the issuer, (iii) the intent and ability of CNA to retain its investment for a period of time sufficient to allow for an anticipated recovery in value and (iv) general market conditions and industry or sector specific outlook.
Joint venture investments
Loews Hotels &
Co
 
has
 interests in operating joint ventures related to hotel properties 
over which it exercises significant influence, but does not have control over them.
Loews Hotels &
Co
 uses
the equity method
 
of accounting for these investments
. Loews Hotels &
Co’s
 investment in these entities was $
356
 million and $
312
 million 
as of
 
December 
31
,
2019
and
2018
and reported in Other assets on the Consolidated Balance Sheets. Equity income for these investments was $
69
 million, $
73
 million and $
81
 million for the years ended December 
31
,
2019
,
2018
and
2017
and reported in Operating expenses and other on the Consolidated Statements of Income.
 
These equity method investments are reviewed for impairment when changes in circumstances indicate that the carrying value of the asset may not be recoverable.
The following tables present summarized financial information for these joint ventures:
                 
Year Ended December 31
 
2019
 
 
2018
 
(In millions)
 
 
 
 
Total assets
   
$      2,261
 
   
$      1,924
 
Total liabilities
 
 
1,727
 
   
1,451
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                         
Year Ended December 31
 
2019
 
 
2018
   
2017
 
Revenues
   
$        804
 
   
$       731
     
$         731
 
Net income
 
 
106
 
   
114
     
261
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Hedging
– The Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedging transactions. The Company also formally assesses (both at the hedge’s inception and on an ongoing basis) whether the derivatives that are used in hedging transactions have been highly effective in offsetting changes in fair value or cash flows of hedged items and whether those derivatives may be expected to remain highly effective in future periods. When it is determined that a derivative for which hedge accounting has been designated is not (or ceases to be) highly effective, the Company discontinues hedge accounting prospectively. See Note 3 for additional information on the Company’s use of derivatives.
Securities lending activities
– The Company lends securities for the purpose of enhancing income or to finance positions to unrelated parties who have been designated as primary dealers by the Federal Reserve Bank of New York. Borrowers of these securities must deposit and maintain collateral with the Company of no less than 100% of the fair value of the securities loaned. United States of America (“U.S.”) Government securities and cash are accepted as collateral. The Company maintains effective control over loaned securities and, therefore, continues to report such securities as investments on the Consolidated Balance Sheets.
Securities lending is typically done on a matched-book basis where the collateral is invested to substantially match the term of the loan. This matching of terms tends to limit risk. In accordance with the Company’s lending agreements, securities on loan are returned immediately to the Company upon notice. Collateral is not reflected as an asset of the Company. There was no collateral held at December 31, 2019 and 2018.
Revenue recognition
– Premiums on property and casualty insurance contracts are recognized in proportion to the underlying risk insured and are principally earned ratably over the term of the policies. Premiums on long term care contracts are earned ratably over the policy year in which they are due. The reserve for unearned premiums represents the portion of premiums written relating to the unexpired terms of coverage.
Insurance receivables include balances due currently or in the future, including amounts due from insureds related to
paid
losses under high deductible policies, and are presented at unpaid balances, net of an allowance for doubtful accounts. Amounts are considered past due based on policy payment terms. The allowance is determined based on periodic evaluations of aged receivables, historical business default data, management’s experience and current economic conditions. Insurance receivables and any related allowance are written off after collection efforts are exhausted or a negotiated settlement is reached.
Property and casualty contracts that are retrospectively rated contain provisions that result in an adjustment to the initial policy premium depending on the contract provisions and loss experience of the insured during the experience period. For such contracts, CNA estimates the amount of ultimate premiums that it may earn upon completion of the experience period and recognizes either an asset or a liability for the difference between the initial policy premium and the estimated ultimate premium. CNA adjusts such estimated ultimate premium amounts during the course of the experience period based on actual results to date. The resulting adjustment is recorded as either a reduction of or an increase to the earned premiums for the period.
CNA’s
non-insurance
warranty revenues are primarily generated from separately-priced service contracts that provide mechanical breakdown and other coverages to vehicle or consumer goods owners, which generally provide coverage from one month to ten years. For warranty products where CNA acts as the principal in the transaction,
N
on-insurance
warranty revenue
 i
s reported on a gross basis, with amounts paid by customers reported as
Non-insurance
warranty revenue and commissions paid to agents reported as
Non-insurance
warranty expense on the Consolidated Statements of Income.
Prior to 2018,
Non-insurance
warranty revenue was recognized net of dealer costs and earned based on the estimated claims emergence pattern over the contract period.
Additionally, CNA provides warranty administration services for dealer and manufacturer warranty products.
Non-insurance
revenues are recognized when obligations under the terms of the contract with CNA’s customers are satisfied, which is generally over time as obligations are fulfilled. CNA recognizes
non-insurance
warranty revenue over the service period in proportion to the actuarially determined expected claims emergence pattern. Customers pay in full at the inception of the warranty contract. The liability for unearned warranty revenue, reported as Deferred
non-insurance
warranty revenue on the Consolidated Balance Sheets, represents the unearned portion of revenue in advance of CNA’s performance, including amounts which are refundable upon cancellation.
Contract costs to obtain or fulfill
non-insurance
warranty contracts with customers are deferred and recorded as Deferred
non-insurance
warranty acquisition expenses on the Consolidated Balance Sheets. These costs are expected to be recoverable over the term of the contract and are amortized in the same manner the related revenue is recognized. CNA evaluates deferred costs for recoverability including consideration of anticipated investment income. Adjustments to deferred costs, if necessary, are recorded in the current period results of operations.
Diamond Offshore’s contract drilling revenues primarily result from providing a drilling rig and the crew and supplies necessary to operate the rig, mobilizing and demobilizing the rig to and from the drill site and performing rig preparation activities and/or modifications required for the contract. Consideration received for performing these activities may consist of dayrate drilling revenue, mobilization and demobilization revenue, contract preparation revenue and reimbursement revenue for the purchase of supplies, equipment, personnel services and other services requested by the customer. Diamond Offshore accounts for these integrated services provided within its drilling contracts as a single performance obligation satisfied over time and comprised of a series of distinct time increments in which drilling services are provided. The total transaction price is determined for each individual contract by estimating both fixed and variable consideration expected to be earned over the term of the contract. The standard contract term ranges from two to 60 months.
Boardwalk Pipelines primarily earns revenues by providing transportation and storage services for natural gas and natural gas liquids and hydrocarbons (referred to together as “NGLs”) on a firm and interruptible basis and provides interruptible natural gas parking and lending services. The majority of Boardwalk Pipelines’ operating subsidiaries are subject to Federal Energy Regulatory Commission (“FERC”) regulations and certain revenues collected, under certain circumstances, may be subject to possible refunds to its customers. An estimated refund liability is recorded considering regulatory proceedings, advice of counsel and estimated total exposure. The majority of Boardwalk Pipelines’ revenues are from firm service contracts which are accounted for as a single promise to stand ready each month of the contract term to provide the committed capacity for either transportation or storage services. The transaction price is comprised of a fixed fee based on the capacity reserved plus a usage fee paid on the volume of commodity transported or injected and withdrawn from storage. Both the fixed and the usage fees are allocated to the single performance obligation of providing transportation or storage service and recognized over time as control is passed to the customer. These service contracts can range in term from one to 20 years and are invoiced monthly.
Loews Hotels & Co provides lodging and related goods and services as well as management and marketing services. Lodging and related revenues are recognized as the guest takes possession of the goods or receives the services. Management and marketing services revenues are recognized as the services are provided and billed on a monthly basis. In addition, Loews Hotels & Co recognizes revenue for the reimbursement of payroll and other expenses as they are incurred on behalf of the owners of joint venture and managed hotel properties.
Altium Packaging is a packaging solutions provider and manufacturer in North America, serving a diverse customer base in the pharmaceutical, dairy, household chemicals, food/nutraceuticals, industrial/specialty chemicals, water and beverage/juice segments. Altium Packaging recognizes revenue at the time control is transferred to the customer, there is persuasive evidence of an arrangement, the sales price is fixed and determinable and collection is reasonably assured.
Claim and claim adjustment expense reserves
– Claim and claim adjustment expense reserves, except reserves for structured settlements not associated with asbestos and environmental pollution (“A&EP”), workers’ compensation lifetime claims and long term care claims, are not discounted and are based on (i) case basis estimates for losses reported on direct business, adjusted in the aggregate for ultimate loss expectations; (ii) estimates of incurred but not reported losses; (iii) estimates of losses on assumed reinsurance; (iv) estimates of future expenses to be incurred in the settlement of claims; (v) estimates of salvage and subrogation recoveries and (vi) estimates of amounts due from insureds related to losses under high deductible policies. Management considers current conditions and trends as well as past CNA and industry experience in establishing these estimates. The effects of inflation, which can be significant, are implicitly considered in the reserving process and are part of the recorded reserve balance. Ceded claim and claim adjustment expense reserves are reported as a component of Receivables on the Consolidated Balance Sheets.
Claim and claim adjustment expense reserves are presented net of anticipated amounts due from insureds related to losses under deductible policies of $1.2 billion as of December 31, 2019 and 2018. A significant portion of these amounts are supported by collateral. CNA also has an allowance for uncollectible deductible amounts, which is presented as a component of the allowance for doubtful accounts included in Receivables on the Consolidated Balance Sheets.
Structured settlements have been negotiated for certain property and casualty insurance claims. Structured settlements are agreements to provide fixed periodic payments to claimants. CNA’s obligations for structured settlements not funded by annuities are included in claim and claim adjustment expense reserves and carried at present values determined using interest rates ranging from 5.5% to 7.6%
and 5.5%
to
8.0%
as of December 31, 2019 and 2018. As of December 31, 2019 and 2018, the discounted reserves for unfunded structured settlements were $497 million and $512 million, net of discount of $724 million and $760 million. For the years ended December 31, 2019, 2018 and 2017, the amount of interest recognized on the discounted reserves of unfunded structured settlements was $36 million, $40 million and $41 million. This interest accretion is presented as a component of Insurance claims and policyholders’ benefits on the Consolidated Statements of Income but is excluded from the disclosure of prior year loss reserve development.
Workers’ compensation lifetime claim reserves are calculated using mortality assumptions determined through statutory regulation and economic factors. At December 31, 2019 and 2018, workers’ compensation lifetime claim reserves are discounted at a 3.5% interest rate. As of December 31, 2019 and 2018, the discounted reserves for workers’ compensation lifetime claim reserves were $293 million and $343 million, net of discount of $135 million and $168 million. For the years ended December 31, 2019, 2018 and 2017, the amount of interest accretion recognized on the discounted reserves of workers’ compensation lifetime claim reserves was $21 million, $16 million and $19 million. This interest accretion is presented as a component of Insurance claims and policyholders’ benefits on the Consolidated Statements of Income, but is excluded from the Company’s disclosure of prior year loss reserve development.
Long term care claim reserves are calculated using mortality and morbidity assumptions based on CNA and industry experience. Long term care claim reserves are discounted
at
 
a
weighted average
 interest rate of 5.9% and 6.0% as of December 31,
 
2019
 and
2018. As of December 31, 2019 and 2018, such discounted reserves totaled $2.7 billion and $2.6 billion, net of discount of $462 million and $460 million.
Future policy benefit reserves
– Future policy benefit reserves represent the active life reserves related to CNA’s long term care policies and are computed using the net level premium method, which incorporates actuarial assumptions as to morbidity, persistency, inclusive of mortality, discount rate, future premium rate adjustments and expenses. Expense assumptions primarily relate to claim adjudication.
These
assumptions a
re locked
 
in over the life
 of the
policy; however if
a premium deficiency
 
e
merges
, the assumptions
are
unlocked, and the future policy benefit reserves
are
increased
. The
September 30, 2019
gross premium valuation (“GPV”) indicated 
a premium deficiency of $216 million and future policy benefit reserves at that date were increased accordingly. As a result, the
 
long term care active life reserves
 
carried
a
s of September 30,
 
2019 represent management’s best estimate assumptions at that date with no margin for adverse deviation. Long term care active life reserves are discounted at a
 weighted average
 interest rate of 5.7% and 6.9% as of December 31, 
2019 and 2018.
In circumstances where the cash flow projections supporting future policy benefit reserves are expected to result in profits being recognized in early future years followed by losses in later future years, the future policy benefit reserves are increased in the future profitable years by an amount necessary to offset losses that are projected to be recognized in later future years. The amount of the additional future policy benefit reserves recorded in each period is determined by applying the ratio of the present value of future losses divided by the present value of future profits from the most recently completed GPV to long term care core income in that period.
I
nsurance-related assessments
– Liabilities for insurance-related assessments are accrued when an assessment is probable, when it can be reasonably estimated and when the event obligating the entity to pay an imposed or probable assessment has occurred. Liabilities for insurance-related assessments are not discounted and are included as part of Other liabilities on the Consolidated Balance Sheets. As of December 31, 2019 and 2018, the liability balances were $84 million and $108 million.
Reinsurance
– Reinsurance accounting allows for contractual cash flows to be reflected as premiums and losses. To qualify for reinsurance accounting, reinsurance agreements must include risk transfer. To meet risk transfer requirements, a reinsurance contract must include both insurance risk, consisting of underwriting and timing risk, and a reasonable possibility of a significant loss for the assuming entity.
Reinsurance receivables related to paid losses are presented at unpaid balances. Reinsurance receivables related to unpaid losses are estimated in a manner consistent with claim and claim adjustment expense reserves or future policy benefit reserves. Reinsurance receivables are reported net of an allowance for doubtful accounts on the Consolidated Balance Sheets. The cost of reinsurance is primarily accounted for over the life of the underlying reinsured policies using assumptions consistent with those used to account for the underlying policies or over the reinsurance contract period. The ceding of insurance does not discharge the primary liability of CNA.
CNA has established an allowance for doubtful accounts on reinsurance receivables which relates to both amounts already billed on ceded paid losses as well as ceded reserves that will be billed when losses are paid in the future. The allowance for doubtful accounts on reinsurance receivables is estimated on the basis of periodic evaluations of balances due from reinsurers, reinsurer solvency, industry experience and current economic conditions. Reinsurer financial strength ratings are updated and reviewed on an annual basis or sooner if CNA becomes aware of significant
changes related to a reinsurer. Because billed receivables generally approximate 5% or less of total reinsurance receivables, the age of the reinsurance receivables related to paid losses is not a significant input into the allowance analysis. Changes in the allowance for doubtful accounts on reinsurance receivables are presented as a component of Insurance claims and policyholders’ benefits on the Consolidated Statements of Income.
Amounts are considered past due based on the reinsurance contract terms. Reinsurance receivables related to paid losses and any related allowance are written off after collection efforts have been exhausted or a negotiated settlement is reached with the reinsurer. Reinsurance receivables from insolvent insurers related to paid losses are written off when the settlement due from the estate can be reasonably estimated. At the time reinsurance receivables related to paid losses are written off, any required adjustment to reinsurance receivables related to unpaid losses is recorded as a component of Insurance claims and policyholders’ benefits on the Consolidated Statements of Income.
A loss portfolio transfer is a retroactive reinsurance contract. If the cumulative claim and allocated claim adjustment expenses ceded under a loss portfolio transfer exceed the consideration paid, the resulting gain from such excess is deferred and amortized into earnings in future periods in proportion to actual recoveries under the loss portfolio transfer. In any period in which there is a revised estimate of claim and allocated claim adjustment expenses and the loss portfolio transfer is in a gain position, the deferred gain is recalculated as if the revised estimate was available at the inception date of the loss portfolio transfer and the change in the deferred gain is recognized in earnings.
Deferred acquisition costs
– Deferrable acquisition costs include commissions, premium taxes and certain underwriting and policy issuance costs which are incremental direct costs of successful contract acquisitions. Acquisition costs related to property and casualty business are deferred and amortized ratably over the period the related premiums are earned. Deferred acquisition costs are presented net of ceding commissions and other ceded acquisition costs.
CNA evaluates deferred acquisition costs for recoverability. Anticipated investment income is considered in the determination of the recoverability of deferred acquisition costs. Adjustments, if necessary, are recorded in current period results of operations.
Policyholder dividends
Policyholder dividends are paid to participating policyholders within the worker’s compensation and surety lines of business. Net written premiums for participating dividend policies were approximately 1% of total net written premiums for each of the years ended December 31, 2019, 2018 and 2017. Dividends to policyholders are accrued according to CNA’s best estimate of the amount to be paid in accordance with contractual provisions and applicable state laws. Dividends to policyholders are presented as a component of Insurance claims and policyholders’ benefits on the Consolidated Statements of Income and Other liabilities on the Consolidated Balance Sheets.
Goodwill and other intangible assets
– Goodwill represents the excess of purchase price over fair value of net assets of acquired entities. Goodwill is tested for impairment annually or when certain triggering events require additional tests. Subsequent reversal of a goodwill impairment charge is not permitted.
Other intangible assets are reported within Other assets. Finite-lived intangible assets are amortized over their estimated useful lives. Indefinite-lived other intangible assets are tested for impairment annually or when certain triggering events require such tests. See Note 7 for additional information on the Company’s goodwill and other intangible assets.
Property, plant and equipment
– Property, plant and equipment is carried at cost less accumulated depreciation and amortization. Depreciation is computed principally by the straight-line method over the estimated useful lives of the various classes of properties. Leaseholds and leasehold improvements are depreciated or amortized over the terms of the related leases (including optional renewal periods, where appropriate) or the estimated lives of improvements, if less than the lease term.
 
The principal service lives used in computing provisions for depreciation are as follows:
 
Years
 
Pipeline equipment
 
 
30 to 50
 
Offshore drilling equipment
 
 
15 to 30
 
Other
 
 
3 to 40
 
Impairment of long-lived assets
–Long-lived and finite-lived intangible assets are reviewed for impairment when changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Long-lived assets and intangibles with finite lives, under certain circumstances, are reported at the lower of carrying amount or fair value.
 
Assets to be disposed of and assets not expected to provide any future service potential to the Company are recorded at the lower of carrying amount or fair value less cost to sell.
Income taxes
– The Company and its eligible subsidiaries file a consolidated tax return. Deferred income taxes are recognized for temporary differences between the financial statement and tax return bases of assets and liabilities, based on enacted tax rates and other provisions of the tax law. The effect of a change in tax laws or rates on deferred tax assets and liabilities is recognized in income in the period in which such change is enacted. Future tax benefits are recognized to the extent that realization of such benefits is more likely than not, and a valuation allowance is established for any portion of a deferred tax asset that management believes may not be realized.
The Company recognizes uncertain tax positions that it has taken or expects to take on a tax return. The tax benefit of a qualifying position is the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. See Note 10 for additional information on the provision for income taxes.
Pension and postretirement benefits
– The Company recognizes the overfunded or underfunded status of its defined benefit plans in Other assets or Other liabilities in the Consolidated Balance Sheets. Changes in funded status related to prior service costs and credits and actuarial gains and losses are recognized in the year in which the changes occur through Accumulated other comprehensive income (loss). The Company measures its benefit plan assets and obligations at December 31. Annual service cost, interest cost, expected return on plan assets, amortization of prior service costs and credits and amortization of actuarial gains and losses are recognized in the Consolidated Statements of Income.
Stock-based compensation
– The Company records compensation expense upon issuance, modification or cancellation of all share-based payment awards granted, primarily on a straight-line basis over the requisite service period, generally three to four years. Stock Appreciation Rights (“SARs”) are valued using the Black-Scholes option pricing model. The application of this valuation model involves assumptions that are judgmental and highly sensitive. These assumptions include the term that the awards are expected to be outstanding, an estimate of the volatility of the underlying stock price, applicable risk-free interest rates and the dividend yield of the Company’s stock. Restricted Stock Units are valued using the grant-date fair value of the Company’s stock.
Net income per share
– Basic net income per share excludes dilution and is computed by dividing net income attributable to common stock by the weighted average number of common shares outstanding for the period. Diluted net income per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock.
For each of the years ended December 31, 2019, 2018 and 2017, approximately 0.7 million, 0.9 million and 0.9 million potential shares attributable to issuances and exercises under the Loews Corporation 2016 Incentive Compensation
 
Plan and the prior plan were included in the calculation of diluted net income per share. For the years ended December 31, 2019 and 2018, there were no shares and for the year ended December 31, 2017, there were 0.4 million shares attributable to employee stock-based compensation awards excluded from the calculation of diluted net income per share because the effect would have been antidilutive.
Foreign currency
– Foreign currency translation gains and losses are reflected in Shareholders’ equity as a component of Accumulated other comprehensive income (loss). The Company’s foreign subsidiaries’ balance sheet accounts are translated at the exchange rates in effect at each reporting date and income statement accounts are translated at the average exchange rates during the reporting period. There were foreign currency transaction gains (losses) of $(3) million, $0 million and $26 million for the years ended December 31, 2019, 2018 and 2017 included in the Consolidated Statements of Income.
Regulatory accounting
– The majority of Boardwalk Pipelines’ operating subsidiaries are regulated by FERC. Texas Gas Transmission, LLC (“Texas Gas”), a wholly owned subsidiary of Boardwalk Pipelines, applies regulatory accounting to certain assets for GAAP purposes, which records certain assets and liabilities consistent with the economic effect of the manner in which independent third party regulators establish rates. Gulf South Pipeline, LP (“Gulf South”), and Gulf Crossing Pipeline Company, LLC (“Gulf Crossing”), both wholly owned subsidiaries of Boardwalk Pipelines, have implemented fuel trackers, for which regulatory accounting is applied. Accordingly, the value of fuel received from customers paying the maximum tariff rate and the related value of fuel used in transportation are recorded to a regulatory asset or liability depending on whether Gulf South or Gulf Crossing use more fuel than it collects from customers or collects more fuel than it uses. Other than as described for Texas Gas and the fuel trackers for Gulf South and Gulf Crossing, regulatory accounting is not applicable to Boardwalk Pipelines’ other FERC regulated entities or operations.
Supplementary cash flow information
– Cash payments made for interest on long term debt, net of capitalized interest, amounted to $560 million, $558 million and $533 million for the years ended December 31, 2019, 2018 and 2017. Cash payments for federal, foreign, state and local income taxes amounted to $190 million, $101 million and $166 million for the years ended December 31, 2019, 2018 and 2017. Investing activities exclude $17 million and $15 million of accrued capital expenditures for the years ended December 31, 2019 and 2018 and include $87 million of previously accrued capital expenditures for the year ended December 31, 2017.
Accounting changes
– In February of 2016, the Financial Accounting Standards Board (“FASB”) issued ASU
2016-02,
“Leases (Topic 842)” (“ASU
2016-02”).
Effective January 1, 2019, the updated guidance requires lessees to recognize lease assets and lease liabilities for most operating leases. The Company adopted the updated accounting guidance using the modified retrospective method. Prior period amounts have not been adjusted and continue to be reported in accordance with the previous accounting guidance. The Company utilized the package of practical expedients allowing the Company to not reassess whether any expired or existing contracts contain a lease, the classification for any expired or existing leases or the initial direct costs for any existing leases. The Company has also elected to apply an exemption for short term leases whereby leases with initial lease terms of one year or less are not recorded on the balance sheet.
For leases where we are a lessee we have elected to account for lease and
non-lease
components as a single lease component, except subsea equipment leases. For leases where we are a lessor we have elected to combine the lease and
non-lease
components of our offshore drilling contracts, if certain conditions are met, and account for the combined component in accordance with the accounting treatment for the predominant component of the contract.
At adoption, the cumulative effect adjustment increased Other assets and Other liabilities by $642 million reflecting operating lease right of use assets, lease liabilities and the derecognition of deferred rent related primarily to lease agreements for office space and machinery and equipment. 
At
 adoption of ASU
2016-02,
Other assets and Other liabilities were adjusted to $3.1 billion and $5.1 billion as of January 1, 2019, as compared to $2.4 billion and $4.5 billion as of December 31, 2018. See Note
9
 for additional information on leases.
On January 1, 2018, the Company adopted ASU
2014-09,
“Revenue from Contracts with Customers (Topic 606)” (“ASU
2014-09”).
The core principle of the accounting guidance is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The standard excluded from its scope the accounting for insurance contracts, financial instruments and certain other agreements that are subject to other guidance in the FASB Accounting Standards Codification, which limited the impact of this change in accounting for the Company. The Company adopted the updated accounting guidance using the modified retrospective method, with a cumulative effect adjustment to the opening balance sheet. At adoption, the cumulative effect adjustment decreased beginning Retained earnings by $62 million (after tax and noncontrolling interests), resulted in a deferred tax asset of $23 million and increased Deferred
non-insurance
warranty acquisition expenses by approximately $1.9 billion and Deferred
non-insurance
warranty revenue by approximately $2.0 billion.
On January 1, 2018 the Company adopted ASU
2016-01,
“Financial Instruments
Overall (Subtopic
825-10):
Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU
2016-01”).
The guidance primarily changed the model for equity securities by requiring changes in the fair value of equity securities to be recognized through the income statement. Prior period amounts were not adjusted and continued to be reported in accordance with the previous accounting guidance. Upon adoption of the updated accounting guidance the Company recognized a cumulative effect adjustment of $25 million (after tax and noncontrolling interests) as an increase to beginning Retained earnings.
On January 1, 2018 the Company adopted ASU
2016-16,
“Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory.” The updated guidance amended the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. The Company adopted this updated guidance using the modified retrospective approach with a cumulative effect adjustment of $9 million (after noncontrolling interests) as a decrease to beginning Retained earnings with an offset to a deferred income tax liability.
On January 1, 2018 the Company early adopted ASU
2018-02,
“Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income” (“ASU
2018-02”).
The updated accounting guidance allowed a reclassification from AOCI to Retained earnings for certain tax effects resulting from the Tax Cuts and Jobs Act of 2017. The impact of the change resulted in a $3 million (after noncontrolling interests) increase in Retained earnings and a corresponding decrease in AOCI. The decrease in AOCI is comprised of a $130 million (after noncontrolling interests) decrease in pension liability and a $127 million (after noncontrolling interests) increase in unrealized gains (losses) on investments.
Recently issued ASUs
– In June of 2016, the FASB issued ASU
2016-13,
“Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The updated accounting guidance requires changes to the recognition of credit losses on financial instruments not accounted for at fair value through net income. The expected credit loss model will require a financial asset to be presented at the net amount expected to be collected and applies to the mortgage loan portfolio, reinsurance and insurance receivables and other financing and trade receivables. Under the new guidance, the OTTI concept has been eliminated for
available-for-sale
fixed maturity securities, and expected credit losses are recognized immediately in earnings through an allowance, rather than as a reduction of amortized cost. This will allow the Company to record reversals of credit losses if the estimate of credit losses declines. For
available-for-sale
fixed maturity securities with an intent to sell, impairment will continue to result in a write-down of amortized cost. The guidance is effective for interim and annual periods beginning after December 15, 2019. The expected credit loss model will be applied using a modified retrospective approach with the cumulative effect recognized as an adjustment to retained earnings. A prospective transition approach is required for
available-for-sale
debt securities that were purchased with credit deterioration or have recognized an OTTI write-down prior to the effective date. The Company has evaluated the effect the guidance will have on its financial statements and determined that the impact at the date of adoption will not be material.
In August of 2018, the FASB issued ASU
2018-12,
“Financial Services – Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts.” The updated accounting guidance requires changes to the measurement and disclosure of long-duration contracts. The guidance requires entities to update annually cash flow assumptions, including morbidity and persistency, and update quarterly discount rate assumptions using an upper-medium grade fixed-income instrument yield. The effect of changes in cash flow assumptions will be recorded in Net income and the effect of changes in discount rate assumptions will be recorded in Other comprehensive income
(“OCI”). This guidance is effective for interim and annual periods beginning after December 15, 2021. The Company will adopt the guidance on January 1, 2022. The guidance requires restatement of prior periods presented. The Company is currently evaluating the method of adoption and the effect the updated guidance will have on its consolidated financial statements, including increased disclosure requirements. The annual updating of cash flow assumptions is expected to increase income statement volatility. The quarterly change in the discount rate is expected to increase volatility in the Company’s Shareholders’ equity, but that will be somewhat mitigated because Shadow Adjustments are eliminated under the new guidance. While the requirements of the new guidance represent a material change from existing accounting guidance, the underlying economics of CNA’s business and related cash flows are unchanged.