Retirement Benefits [Abstract] Pension Plans, Retirement Benefits and Savings Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Consolidating Financial Statements of The Travelers Companies, Inc. and Subsidiaries (Unaudited) disclosure Consolidating Financial Statements of The Travelers Companies, Inc. and Subsidiaries (Unaudited) Condensed Financial Statements [Text Block] Earnings Per Share Reconciliation [Abstract] Net income Net Income (Loss) Attributable to Parent Participating share-based awards — allocated income Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Net income available to common shareholders -- basic Net Income (Loss) Available to Common Stockholders, Basic Net income available to common shareholders -- diluted Net Income (Loss) Available to Common Stockholders, Diluted Weighted average shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Weighted average effects of dilutive securities - stock options and performance shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Net income per common share, basic (in dollars per share) Earnings Per Share, Basic Net income per common share, diluted (in dollars per share) Earnings Per Share, Diluted Consolidating Statement of Income [Table] Condensed Income Statement [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Reportable Legal Entities [Member] Reportable Legal Entities [Member] Eliminations [Member] Consolidation, Eliminations [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] TPC [Member] Subsidiary Issuer [Member] Other Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] TRV [Member] Parent Company [Member] Consolidating Statement of Income Condensed Income Statements, Captions [Line Items] Premiums Premiums Earned, Net Net investment income Net Investment Income Fee income Insurance Commissions and Fees Net realized investment gains (losses) Realized Investment Gains (Losses) Other revenues Other Income Total revenues Revenues Claims and claim adjustment expenses Policyholder Benefits and Claims Incurred, Net Amortization of deferred acquisition costs Deferred Policy Acquisition Costs, Amortization Expense General and administrative expenses Selling, General and Administrative Expense Interest expense Interest Expense Total claims and expenses Benefits, Losses and Expenses Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income of subsidiaries Income (Loss) from Subsidiaries, Net of Tax Net income Total other-than-temporary impairment gains (losses) Other than Temporary Impairment Losses, Investments Other-than-temporary impairment losses recognized in net realized investment gains (losses) Other-Than-Temporary Impairment Loss, Total Investments, Portion Recognized In Earnings Amount of other-than-temporary impairment (OTTI) on total investments, recognized in earnings. Includes investment in debt securities and other investments. Other-than-temporary impairment losses recognized in other comprehensive income (loss) Other than Temporary Impairment Loss, Investments, Portion in Other Comprehensive Loss, before Tax, Portion Attributable to Parent, Available-for-sale Securities Other-than-temporary impairment gains recognized in other comprehensive income (loss) Other than Temporary Impairment Losses, Recovery, Investments, Portion in Other Comprehensive Loss before Tax, Portion Attributable To Parent, Available-for-sale Securities Amount before tax of other than temporary impairment (OTTI) recovery on investments in available-for-sale securities, recognized in other comprehensive income, portion attributable to parent. Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-Based Incentive Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Benefit Plans [Table] Schedule of Defined Benefit Plans Disclosures [Table] Benefit Plans [Axis] Retirement Plan Type [Axis] Pension and postretirement benefit plans [Domain] Retirement Plan Type [Domain] Pension Plans [Member] Pension Plan [Member] Postretirement Benefit Plans [Member] Other Postretirement Benefits Plan [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Claims and claim adjustment expenses [Member] Claims and claim adjustment expenses [Member] Primary financial statement caption encompassing claims and claim adjustment expenses. General and administrative expenses [Member] Selling, General and Administrative Expenses [Member] Defined benefit plan disclosure Defined Benefit Plan Disclosure [Line Items] Service cost Defined Benefit Plan, Service Cost Interest cost on benefit obligation Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Net periodic benefit cost, amortization of unrecognized prior service benefit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Net periodic benefit cost, amortization of unrecognized net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Total non-service cost (benefit) Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Leases [Abstract] Leases Lessee, Operating Leases [Text Block] Consolidating Balance Sheet [Table] Condensed Balance Sheet Statement [Table] Consolidating Balance Sheet Condensed Balance Sheet Statements, Captions [Line Items] Fixed maturities, at fair value Debt Securities, Available-for-sale Equity securities, at fair value Equity Securities, FV-NI Real estate investments Real Estate Investments, Net Short-term securities Other Short-term Investments Other investments Other Investments Total investments Investments Cash Cash Investment income accrued Accrued Investment Income Receivable Premiums receivable Premiums Receivable, Net Reinsurance recoverables Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments Ceded unearned premiums Prepaid Reinsurance Premiums Deferred acquisition costs Deferred Policy Acquisition Costs Deferred taxes Deferred Income Tax Assets, Net Contractholder receivables Contractholder receivables Under certain workers' compensation insurance contracts with deductible features, the Entity has an obligation to pay the full amount claimed. The Entity is subsequently reimbursed by the policyholder for the policy deductible. The amount to be reimbursed is included on a gross basis in the consolidated balance sheet in contractholder receivables and contractholder payables, respectively. Goodwill Goodwill Other intangible assets Intangible Assets, Net (Excluding Goodwill) Investment in subsidiaries Investments in and Advances to Affiliates, Amount of Equity Other assets Other Assets Total assets Assets Claims and claim adjustment expense reserves Liability for Claims and Claims Adjustment Expense Unearned premium reserves Unearned Premiums Contractholder payables Contractholder payables Under certain workers' compensation insurance contracts with deductible features, the Entity has an obligation to pay the full amount claimed. The Entity is subsequently reimbursed by the policyholder for the policy deductible. The amount to be reimbursed is included on a gross basis in the consolidated balance sheet in contractholder receivables and contractholder payables, respectively. Payables for reinsurance premiums Ceded Premiums Payable Debt Debt, Long-term and Short-term, Combined Amount Other liabilities Other Liabilities Total liabilities Liabilities Common stock Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost Treasury Stock, Value Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Fixed maturities, available for sale, amortized cost Debt Securities, Available-for-sale, Amortized Cost Equity securities, cost Equity Securities, FV-NI, Cost Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock, at cost (in shares) Treasury Stock, Shares Additional information regarding real estate operating leases Lease, Cost [Table Text Block] Contractual maturities of lease liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Segment Reporting [Abstract] Assets by segment [Table] Reconciliation of Assets from Segment to Consolidated [Table] Reportable Segments [Member] Operating Segments [Member] Other assets [Member] Other [Member] Items used in reconciling reportable segments' amounts to consolidated amount. Includes corporate-level activity. Segments [Axis] Segments [Axis] Reportable Segments [Domain] Segments [Domain] Business Insurance [Member] Business Insurance [Member] Reportable segment of the Company offering a broad array of property and casualty insurance and insurance related services to its customers primarily in the United States, as well as in Canada, the United Kingdom, the Republic of Ireland, Brazil and throughout other parts of the world as a corporate member of Lloyd's. Bond & Specialty Insurance [Member] Bond & Specialty Insurance [Member] Reportable segment of the Company providing surety, fidelity, management liability, professional liability, and other property and casualty coverages and related risk management services to its customers in the United States and certain specialty insurance products in Canada, the United Kingdom, the Republic of Ireland and Brazil, utilizing various degrees of financially-based underwriting approaches. Personal Insurance [Member] Personal Insurance [Member] Reportable segment of the Company writing a broad range of property and casualty insurance covering individuals' personal risks, primarily in the United States, as well as in Canada. Assets by segment Segment Reporting, Asset Reconciling Item [Line Items] Total assets Debt Disclosure [Abstract] Schedule of Debt [Table] Schedule of Long-term Debt Instruments [Table] Long-Term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-Term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes [Member] Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 4.10% Senior notes due March 4, 2049 [Member] Senior Notes 4.10% Due March 2049 [Member] 4.10% Senior notes due March 4, 2049 Debt Instrument Debt Instrument [Line Items] Debt, principal amount Debt Instrument, Face Amount Interest rate (percent) Debt Instrument, Interest Rate, Stated Percentage Net proceeds of issuance, after the deduction of the underwriting discount and expenses Proceeds from Debt, Net of Issuance Costs Percentage of principal amount at which redemption price may be set Debt Instrument, Redemption Price, Percentage Basis points added to current Treasury rate used in calculation of alternative redemption price Debt Instrument Redemption Price Calculation Interest Assumption Basis Spread Percentage points added to the Treasury Rate and used in the calculation of the redemption price of the debt instrument. Commercial paper outstanding Commercial Paper Insurance Loss Reserves [Abstract] Liability for Claims and Claims Adjustment Expense [Table] Liability for Claims and Claims Adjustment Expense [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Property-casualty [Member] Property, Liability and Casualty Insurance Product Line [Member] Liability for claims and claim adjustment expense Liability for Claims and Claims Adjustment Expense [Line Items] Net favorable prior year reserve development included in estimated claims and claim adjustment expenses incurred for claims arising in prior years Prior Year Claims and Claims Adjustment Expense Net favorable (unfavorable) prior year reserve development impacting the Company's results of operations Net favorable prior year reserve development impacting the Company's results of operations Amount of benefit (expense) for claims incurred in prior reporting periods and related claims settlement costs impacting the Company's results of operations. Accretion expense Accretion Expense Document and Entity Information Registrant name Entity Registrant Name Central index key Entity Central Index Key Document type Document Type Document period end date Document Period End Date Amendment flag Amendment Flag Current fiscal year end date Current Fiscal Year End Date Filer category Entity Filer Category Entity emerging growth company Entity Emerging Growth Company Entity small business Entity Small Business Common stock shares outstanding Entity Common Stock, Shares Outstanding Document fiscal year focus Document Fiscal Year Focus Document fiscal period focus Document Fiscal Period Focus Segment Information Segment Reporting Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill by segment [Table Text Block] Schedule of Goodwill [Table Text Block] Other intangible assets subject to amortization [Table Text Block] Schedule of Finite-Lived Intangible Assets [Table Text Block] Other intangible assets not subject to amortization [Table Text Block] Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Other Comprehensive Income and Accumulated Other Comprehensive Income disclosure Other Comprehensive Income and Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Consolidating Statement of Cash Flows [Table] Condensed Cash Flow Statement [Table] Consolidating Statement of Cash Flows Condensed Cash Flow Statements, Captions [Line Items] Net adjustments to reconcile net income to net cash provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Proceeds from maturities of fixed maturities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from sales of investments: Proceeds from Sale, Maturity and Collection of Investments [Abstract] Fixed maturities Proceeds from Sale of Debt Securities, Available-for-sale Equity securities Proceeds From Sale Of Equity Securities The cash inflow associated with the sale of equity securities measured at fair value with change in fair value recognized in net income (FV-NI). Real estate investments Proceeds from Sale of Real Estate Held-for-investment Other investments Proceeds from Sale and Maturity of Other Investments Purchases of investments: Payments to Acquire Investments [Abstract] Fixed maturities Payments to Acquire Debt Securities, Available-for-sale Equity securities Payments To Acquire Equity Securities The cash outflow associated with the purchase of equity securities measured at fair value with change in fair value recognized in net income (FV-NI). Real estate investments Payments to Acquire Real Estate Held-for-investment Other investments Payments to Acquire Other Investments Net sales (purchases) of short-term securities Payments for (Proceeds from) Available-for-sale Securities, Short-term Securities transactions in course of settlement Securities transactions in course of settlement The impact of timing on market settlement of cash and securities. Other investing activities Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Treasury stock acquired — share repurchase authorization Payments for Repurchase of Common Stock Treasury stock acquired — net employee share-based compensation Payments Related to Tax Withholding for Share-based Compensation Dividends paid to shareholders Payments of Ordinary Dividends, Common Stock Payment of debt Repayments of Debt Issuance of debt Issuance of common stock — employee share options Proceeds from Stock Options Exercised Dividends paid to parent company SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash Effect of Exchange Rate on Cash Net increase (decrease) in cash Cash, Period Increase (Decrease) Cash at beginning of year Cash at end of period Income taxes paid Income Taxes Paid, Net Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Level within the fair value hierarchy at which the Company's financial assets and financial liabilities are measured on a recurring basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring basis [Member] Fair Value, Measurements, Recurring [Member] Level within the fair value hierarchy at which the Company's financial assets and financial liabilities are measured [Axis] Fair Value Hierarchy and NAV [Axis] Level within the fair value hierarchy at which the Company's financial assets and financial liabilities are measured [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Investment type [Axis] Investment Type [Axis] Total [Domain] Investments [Domain] Fixed maturities [Member] Debt Securities [Member] U.S. Treasury securities and obligations of U.S. government and government agencies and authorities [Member] US Treasury and Government [Member] Obligations of states, municipalities and political subdivisions [Member] US States and Political Subdivisions Debt Securities [Member] Debt securities issued by foreign governments [Member] Debt Security, Government, Non-US [Member] Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member] Residential Mortgage Backed Securities [Member] All other corporate bonds [Member] Other Debt Obligations [Member] Redeemable preferred stock [Member] Redeemable Preferred Stock [Member] Equity securities [Member] Equity Securities [Member] Public common stock [Member] Common Stock [Member] Non-redeemable preferred stock [Member] Nonredeemable Preferred Stock [Member] Other Investments [Member] Other Investments [Member] Level within the fair value hierarchy at which the Company's financial assets and financial liabilities are measured Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total invested assets measured on a recurring basis Investments, Fair Value Disclosure Other liabilities measured on a recurring basis Other Liabilities, Fair Value Disclosure Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation [Policy Text Block] Basis of Accounting, Policy [Policy Text Block] Adoption of Accounting Standards [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Number of reportable business segments Number of Reportable Segments Level within the fair value hierarchy at which the Company's financial assets and financial liabilities reported at fair value are measured on a recurring basis [Table Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Carrying value and fair value of financial instruments disclosed, but not carried, at fair value and the level within the fair value hierarchy at which such financial instruments are categorized [Table Text Block] Fair Value, by Balance Sheet Grouping [Table Text Block] Statement of Financial Position [Abstract] Contingencies, Commitments and Guarantees [Abstract] Schedule of guarantor obligations [Table] Schedule of Guarantor Obligations [Table] Guarantor obligations by nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor obligations, nature [Domain] Guarantor Obligations, Nature [Domain] Indemnifications related to the sale of businesses [Member] Indemnification Agreement [Member] Guarantees of certain investments and third-party loans [Member] Guarantees of certain investments and third-party loans [Member] An agreement (contract) that contingently requires the guarantor to make payments to the guaranteed party for that party's loss related to certain investments and third party loans related to certain investments. Guarantees of certain insurance policy obligations [Member] Guarantees of certain insurance policy obligations [Member] An agreement (contract) that contingently requires the guarantor to make payments to the guaranteed party for that party's loss related to certain insurance policy obligations of a former subsidiary. Guarantor obligations Guarantor Obligations [Line Items] Maximum amount of contingent obligation Guarantor Obligations, Maximum Exposure, Undiscounted Amount indemnified by a third party Amount indemnified by a third party The amount of a guarantee that is indemnified by a third party. Statement of Comprehensive Income [Abstract] Other comprehensive income (loss): Other Comprehensive Income (Loss), before Tax [Abstract] Changes in net unrealized gains (losses) on investment securities having no credit losses recognized in the consolidated statement of income Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent Changes in net unrealized gains (losses) on investment securities having credit losses recognized in the consolidated statement of income Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income The amount before tax, after reclassification adjustments, of changes in net unrealized gains on investment securities that have or have had credit losses recognized in the consolidated statement of income, attributable to parent. Amount therefore also includes non-credit changes on securities that had current or previous credit loss components, attributable to parent. Net changes in benefit plan assets and obligations Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent Net changes in unrealized foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent Other comprehensive income (loss) before income taxes Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Income tax expense (benefit) Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other comprehensive income (loss), net of taxes Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Summary of the components of net periodic benefit cost for the Company's pension and postretirement benefit plans recognized in the consolidated statement of income [Table Text Block] Schedule of Net Benefit Costs [Table Text Block] Consolidated statement of income line items impacted by service costs and non-service benefit costs [Table Text Block] Consolidated statement of income line items impacted by service costs and non-service benefit costs [Table Text Block] Tabular disclosure of the income statement line items impacted by the service cost and non-service cost components of net benefit costs for pension plans and/or other employee benefit plans. Company's revenues and income by segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Business segment reconciliations of revenue and income, net of tax [Table Text Block] Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Asset reconciliation [Table Text Block] Reconciliation of Assets from Segment to Consolidated [Table Text Block] Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract] Number of shares repurchased (in shares) Treasury Stock, Shares, Acquired Cost of shares repurchased Treasury Stock, Value, Acquired, Cost Method Average cost per share repurchased (in dollars per share) Treasury Stock Acquired, Average Cost Per Share Number of shares acquired to cover tax withholding costs and exercise costs (in shares) Shares Paid for Tax Withholding for Share Based Compensation Cost of shares acquired to cover tax withholding costs and exercise costs Adjustments Related to Tax Withholding for Share-based Compensation Remaining capacity under share repurchase authorization Stock Repurchase Program, Remaining Authorized Repurchase Amount Amount of certain debt obligations of Travelers Property Casualty Corp. (TPC) and Travelers Insurance Group Holdings, Inc. (TIGHI) that are fully and unconditionally guaranteed by The Travelers Companies, Inc. Amount of certain debt obligations of TPC that are unconditionally guaranteed by The Travelers Companies, Inc. Amount of certain debt obligations of TPC that are unconditionally guaranteed by The Travelers Companies, Inc. Claims and claim adjustment expense reserves [Table Text Block] Claims and claim adjustment expense reserves [Table Text Block] Tabular disclosure of claims and claim adjustment reserves by insurance product line. Reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses [Table Text Block] Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Information for fully vested stock option awards [Table Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] Carrying value and fair value of the financial assets and financial liabilities disclosed, but not carried, at fair value and the level within the fair value hierarchy at which such assets and liabilities are categorized [Table] Fair Value, by Balance Sheet Grouping [Table] Financial assets and financial liabilities measurement basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Disclosure items [Member] Portion at Fair Value Measurement [Member] Carrying Value [Member] Reported Value Measurement [Member] Fair Value [Member] Estimate of Fair Value Measurement [Member] Financial Instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Debt Long-term Debt, Fair Value Commercial paper Reclassification out of accumulated other comprehensive income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Equity Components [Axis] Equity Components [Axis] Equity Components [Domain] Equity Component [Domain] Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Changes in Net Unrealized Gains (Losses) on Investment Securities Having No Credit Losses Recognized in the Consolidated Statement of Income [Member] Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Changes in Net Unrealized Gains (Losses) on Investment Securities Having Credit Losses Recognized in the Consolidated Statement of Income [Member] Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] Net Benefit Plan Assets and Obligations Recognized in Shareholders' Equity [Member] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Net Unrealized Foreign Currency Translation [Member] Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification Adjustment out of Accumulated Other Comprehensive Income Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification adjustment impacting net realized investment gains (losses) on the income statement Reclassification adjustment impacting claims and claim adjustment expenses on the income statement Reclassification adjustment impacting general and administrative expense on the income statement Total reclassifications Income tax (expense) benefit Amounts reclassified from accumulated other comprehensive income, net of taxes Goodwill by segment [Table] Schedule of Goodwill [Table] Other [Member] Goodwill by segment Goodwill [Line Items] Percent of fixed maturities for which a pricing service estimates fair value Percent of fixed maturities for which a pricing service estimates fair value Percentage of fixed maturities for which a pricing service was used in determining fair value. Fair value of the fixed maturities for which the Company used an internal pricing matrix Fair value of the fixed maturities for which the Company used an internal pricing matrix The fair value of the fixed maturities for which the Company used an internal pricing matrix in determining fair value. Fair value of the fixed maturities for which the Company received a broker quote Fair value of the fixed maturities for which the Company received a broker quote The fair value of the fixed maturities for which the Company received a broker quote for use in determining fair value. Estimated fair value of put/call option Estimated Fair Value Of Put Call Option The estimated fair value of a put/call option that was entered into in connection with a business acquisition that allows the Company to acquire the remaining shares of the acquired company at a future date. Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Consolidating Statement of Income (Unaudited) [Table Text Block] Condensed Income Statement [Table Text Block] Consolidating Statement of Comprehensive Income (Loss) (Unaudited) [Table Text Block] Condensed Statement of Comprehensive Income [Table Text Block] Consolidating Balance Sheet (Unaudited) [Table Text Block] Condensed Balance Sheet [Table Text Block] Consolidating Statement of Cash Flows (Unaudited) [Table Text Block] Condensed Cash Flow Statement [Table Text Block] Stock options vested at end of period, number (in shares) Stock options vested at end of period, number (in shares) As of the balance sheet date, the number of shares into which fully vested stock options outstanding can be converted under the option plan. Stock options vested at end of period, weighted average exercise price (in dollars per share) Stock options vested at end of period, weighted average exercise price (per share) As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested. Stock options vested at end of period, weighted average contractual life remaining (in years) Stock options vested at end of period, weighted average contractual life remaining Weighted average remaining contractual term for fully vested options outstanding. Stock options vested at end of period, aggregate intrinsic value Stock options vested at end of period, aggregate intrinsic value Amount of difference between fair value of the underlying shares reserved for issuance and exercise prices of fully vested options outstanding. Stock options exercisable at end of period, number (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Stock options exercisable at end of period, weighted average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Stock options exercisable at end of period, weighted average contractual life remaining (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Stock options exercisable at end of period, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Total compensation cost recognized in earnings for all share-based incentive compensation awards Allocated Share-based Compensation Expense Tax benefit recognized in earnings related to compensation costs Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Total unrecognized compensation cost related to all nonvested share-based incentive compensation awards Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted-average period of recognition for unrecognized compensation cost (in years) Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Insurance Claim Reserves Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Common stock [Member] Common Stock Including Additional Paid in Capital [Member] Retained earnings [Member] Retained Earnings [Member] Accumulated other comprehensive loss, net of tax [Member] Treasury stock, at cost [Member] Treasury Stock [Member] Common shares outstanding [Member] Consolidated Statement of Changes in Shareholders' Equity Statement [Line Items] Shareholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance, beginning of year Employee share-based compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Compensation amortization under share-based plans and other changes Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Cumulative effect of adoption of updated accounting guidance for equity financial instruments Cumulative Effect of New Accounting Principle in Period of Adoption Reclassification of certain tax effects from adoption of updated accounting guidance Tax Cuts And Jobs Act Of 2017, Reclassification From Aoci To Retained Earnings, Tax Effect Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act of 2017. Dividends Dividends Other Stockholders' Equity, Other Other comprehensive income (loss) Treasury stock acquired — share repurchase authorization Net shares acquired related to employee share-based compensation plans Balance, end of period Common shares outstanding Stock Transactions, Parenthetical Disclosures [Abstract] Balance, beginning of year (in shares) Treasury stock acquired - share repurchase authorization (in shares) Net shares issued under employee share-based compensation plans (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Balance, end of period (in shares) Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Net realized investment (gains) losses Depreciation and amortization Depreciation, Depletion and Amortization Deferred federal income tax expense (benefit) Deferred Federal Income Tax Expense (Benefit) Equity in income from other investments Income (Loss) from Equity Method Investments Premiums receivable Increase (Decrease) in Premiums Receivable Reinsurance recoverables Increase (Decrease) in Reinsurance Recoverable Deferred acquisition costs Increase (Decrease) in Deferred Policy Acquisition Costs Claims and claim adjustment expense reserves Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve Unearned premium reserves Increase (Decrease) in Unearned Premiums Other operating activities Other Operating Activities, Cash Flow Statement Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Net sales (purchases) of short-term securities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Supplemental disclosure of cash flow information Supplemental Cash Flow Elements [Abstract] Income taxes paid Assets Assets [Abstract] Fixed maturities, available for sale, at fair value (amortized cost $64,216 and $63,601) Equity securities, at fair value (cost $375 and $382) Liabilities Liabilities [Abstract] Shareholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Common stock (1,750.0 shares authorized; 262.0 and 263.7 shares issued, 261.9 and 263.6 shares outstanding) Accumulated other comprehensive loss Treasury stock, at cost (514.2 and 510.9 shares) Income Statement [Abstract] Revenues Revenues [Abstract] Claims and expenses Benefits, Losses and Expenses [Abstract] Income tax expense Net income per share Earnings Per Share [Abstract] Basic (in dollars per share) Diluted (in dollars per share) Weighted average number of common shares outstanding Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Basic (in shares) Diluted (in shares) Cash dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Unfunded commitments to private equity limited partnerships and real estate partnerships Unfunded commitments to private equity limited partnerships and real estate partnerships The amount of unfunded commitments to private equity limited partnerships and real estate partnerships in which the Company invests. Investments [Abstract] Amortized cost and fair value of investments in fixed maturities [Table Text Block] Debt Securities, Available-for-sale [Table Text Block] Cost and fair value of investments in equity securities [Table Text Block] Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] Unrealized investment losses [Table Text Block] Schedule of Unrealized Loss on Investments [Table Text Block] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Obligations of states, municipalities and political subdivisions, local general obligation [Member] Obligations of states, municipalities and political subdivisions, local general obligation [Member] Bonds or similar securities issued by city or local governments or the agencies operated by the local government which are secured by the issuers general taxing powers. Obligations of states, municipalities and political subdivisions, revenue [Member] Obligations of states, municipalities and political subdivisions, revenue [Member] Bonds or similar securities issued by state or local governments that finance income-producing projects and are secured by a specified revenue source. Obligations of states, municipalities and political subdivisions, state general obligation [Member] Obligations of states, municipalities and political subdivisions, state general obligation [Member] Bonds or similar securities issued by state governments or the agencies operated by the state government which are secured by the issuers general taxing powers. Obligations of states, municipalities and political subdivisions, pre-refunded [Member] Obligations of states, municipalities and political subdivisions, pre-refunded [Member] Bonds or similar securities issued by state, city, or local US governments or the agencies operated by state, city, or local governments for which said states or municipalities have established irrevocable trusts, almost exclusively comprised of U.S. Treasury securities, which were created to satisfy their responsibility for payments of principal and interest. Investment disclosure details Debt Securities, Available-for-sale [Line Items] Fixed maturities, amortized cost Gross unrealized gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Proceeds from sales of fixed maturities classified as available for sale Gross realized gains Debt Securities, Available-for-sale, Realized Gain Gross realized losses Debt Securities, Available-for-sale, Realized Loss Lease payments due, remainder of 2019 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Lease payments due, 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two Lease payments due, 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three Lease payments due, 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four Lease payments due, 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Lease payments due, thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total undiscounted lease payments Lessee, Operating Lease, Liability, Payments, Due Less: present value adjustment Lessee, Operating Lease, Liability, Undiscounted Excess Amount Operating lease liability Operating Lease, Liability Operating leases Operating Lease, Cost Short-term leases Short-term Lease, Cost Lease expense Operating Lease And Short-Term Lease, Cost Total operating and short-term lease costs. Less: sublease income Sublease Income Net lease cost Lease, Cost Cash payments included in the measurement of lease liabilities reported in operating cash flows Operating Lease, Payments Right-of-use assets obtained in exchange for new lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Weighted average discount rate (percent) Operating Lease, Weighted Average Discount Rate, Percent Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Continuous unrealized loss position, less than 12 months, fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Continuous unrealized loss position, less than 12 months, gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Continuous unrealized loss position, 12 months or longer, fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Continuous unrealized loss position, 12 months or longer, gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Continuous unrealized loss position, total, fair value Debt Securities, Available-for-sale, Unrealized Loss Position Continuous unrealized loss position, total, gross unrealized losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Impairment charges Cumulative OTTI credit losses recognized for securities held Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Cumulative credit component of other-than-temporary impairments (OTTI) on fixed maturities recognized in the consolidated statement of income for which a portion of the OTTI was recognized in other comprehensive income (loss) for fixed maturities held, as a percentage of the fixed maturity portfolio on a pre-tax basis (less than) Cumulative credit component of other-than-temporary impairments (OTTI) on fixed maturities recognized in the consolidated statement of income for which a portion of the OTTI was recognized in other comprehensive income for fixed maturities held, as a percentage of the fixed maturity portfolio on a pre-tax basis (less than) The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity), as a percentage of the fixed maturity portfolio on a pretax basis. Cumulative credit component of other-than-temporary impairments (OTTI) on fixed maturities recognized in the consolidated statement of income for which a portion of the OTTI was recognized in other comprehensive income (loss) for fixed maturities held, as a percentage of shareholders' equity on an after-tax basis (less than) Cumulative credit component of other-than-temporary impairments (OTTI) on fixed maturities recognized in the consolidated statement of income for which a portion of the OTTI was recognized in other comprehensive income for fixed maturities held, as a percentage of shareholders' equity on an after-tax basis (less than) The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity), as a percentage of shareholders' equity on an after-tax basis. Accumulated Other Comprehensive Income [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated other comprehensive income [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Amounts reclassified from accumulated other comprehensive income Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Pre-tax components of other comprehensive income (loss) and related tax expense (benefit) New Accounting Pronouncements [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-02 [Member] Accounting Standards Update 2016-02 [Member] New Accounting Pronouncements New Accounting Pronouncements or Change in Accounting Principle [Line Items] Right-of-use asset Operating Lease, Right-of-Use Asset Operating lease liability Cumulative effect adjustment Changes in accumulated other comprehensive income (loss) (AOCI) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit) for each component [Table Text Block] Comprehensive Income (Loss) [Table Text Block] Pre-tax and related income tax (expense) benefit components of the amounts reclassified from accumulated other comprehensive income to the consolidated statement of income [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Other intangible assets by major asset class [Table] Schedule of Finite-Lived Intangible Assets [Table] Other intangible assets by major asset class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Other intangible assets subject to amortization [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer-related [Member] Customer-Related Intangible Assets [Member] Contract-based [Member] Contract-Based Intangible Assets [Member] Insurance Contracts Acquired in Business Combination [Member] Insurance Contracts Acquired in Business Combination [Member] Other intangible assets by major asset class Finite-Lived Intangible Assets [Line Items] Intangible assets subject to amortization, gross carrying amount Finite-Lived Intangible Assets, Gross Intangible assets subject to amortization, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangible assets subject to amortization, net Finite-Lived Intangible Assets, Net Intangible assets not subject to amortization Indefinite-lived Intangible Assets (Excluding Goodwill) Total other intangible assets, gross carrying amount Intangible Assets, Gross (Excluding Goodwill) Total other intangible assets, net Amortization expense of intangible assets Amortization of Intangible Assets Estimated intangible asset amortization expense, remainder of 2019 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Estimated intangible asset amortization expense, 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two Estimated intangible asset amortization expense, 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three Estimated intangible asset amortization expense, 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four Estimated intangible asset amortization expense, 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Contingencies, Commitments and Guarantees Commitments Contingencies and Guarantees [Text Block] Reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses [Table] Accident and health [Member] Accident And Health Insurance, Excluding Workers' Compensation [Member] Contract providing insurance coverage against loss by illness or injury. Includes, but is not limited to, medical, dental, disability, and long-term care. Excludes workers' compensation. Reconciliation of beginning and ending reserve balances for claims and claim adjustment expenses Reconciliation of beginning and ending reserve balances for claims and claim adjustment expenses [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Claims and claim adjustment expense reserves at beginning of year Reinsurance recoverables on unpaid losses Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Net reserves at beginning of year Liability for Unpaid Claims and Claims Adjustment Expense, Net Estimated claims and claim adjustment expenses for claims arising in the current year Current Year Claims and Claims Adjustment Expense Estimated decrease in claims and claim adjustment expenses for claims arising in prior years Total increases Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Claims and claim adjustment expense payments for claims arising in current year Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Claims and claim adjustment expense payments for claims arising in prior years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Total payments Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Unrealized foreign exchange (gain) loss Liability for Unpaid Claims and Claims Adjustment Expense, Foreign Currency Translation Gain (Loss) Net reserves at end of period Reinsurance recoverables on unpaid losses Claims and claim adjustment expense reserves at end of period Amount of increase in gross claims and claim adjustment expense reserves Amount of increase (decrease) in gross claims and claim adjustment expense reserves Amount of increase (decrease) in the reserve for gross claims and claim adjustment expenses. Amount of decrease in reinsurance recoverables on unpaid losses Amount of increase (decrease) in reinsurance recoverables on unpaid losses Amount of increase (decrease) in reinsurance recoverables on unpaid losses. Schedule of segment reporting information, by segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Domestic [Member] UNITED STATES International [Member] Non-US [Member] Workers' compensation [Member] Workers' compensation [Member] Product line providing coverage for employers for specified benefits payable under state or federal law for workplace injuries to employees. Automobile [Member] Automobile [Member] Provides coverage for losses relating to automobiles including but not limited to bodily injury and property damage. Commercial property [Member] Commercial property [Member] Product line providing coverage for loss or damage to buildings, inventory and equipment from a variety of events, including, among others, hurricanes and other windstorms, earthquakes, hail, wildfires, severe winter weather, floods, volcanic eruptions, tsunamis, theft, vandalism, fires, explosions, terrorism and financial loss due to business interruption resulting from covered property damage. General liability [Member] General Liability [Member] Commercial multi-peril [Member] Commercial multi-peril [Member] Product line providing a combination of the commercial property and general liability product lines. Other [Member] Business Insurance Other [Member] Product line grouping within Business Insurance including the Special Liability Group (which manages the Company's asbestos and environmental liabilities) and the assumed reinsurance and certain other runoff operations. Fidelity and surety [Member] Fidelity and surety [Member] Product line providing fidelity insurance coverage, which protects an insured for loss due to embezzlement or misappropriation of funds by an employee, and surety, which is a three-party agreement whereby the insurer agrees to pay a third party to make complete an obligation in response to the default, acts or omissions of an insured. Other [Member] Bond & Specialty Other [Member] Grouping of product lines not specifically outlined for Bond & Specialty including Property, Workers' Compensation, Commercial Automobile and Commercial Multi-Peril Homeowners and Other [Member] Homeowners and other [Member] Provides protection against losses to dwellings and contents from a variety of perils (excluding flooding) as well as coverage for personal liability. Segment reporting information Segment Reporting Information [Line Items] Total segment revenues Total segment revenues Total revenues excluding realized gains (losses). Core income (loss) Core income (loss) Net income (loss) excluding the after-tax impact of net realized gains (losses). Net realized investment gains (losses), net of tax Net realized investment gains (losses), net of tax The net realized gains or losses on investments during the period, after tax. After-tax interest expense After-tax interest expense Interest expense, after tax. Earnings per share reconciliation [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Equity Securities [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Investment disclosure details Debt and Equity Securities, FV-NI [Line Items] Gross gains Equity Securities, FV-NI, Unrealized Gain Gross losses Equity Securities, FV-NI, Unrealized Loss Net recognized gains (losses) on equity securities still held Equity Securities, FV-NI, Unrealized Gain (Loss) Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Earnings per Share Earnings Per Share [Text Block] Basis of Presentation and Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Common Share Repurchases Treasury Stock [Text Block] Debt Debt Disclosure [Text Block] Other-than-temporary impairment, credit losses recognized in net realized investment gains (losses) Unrealized gains from other changes in total other-than-temporary impairments recognized in other comprehensive income (loss) as part of changes in net unrealized gains (losses) on investment securities having credit losses recognized in the consolidated statement of income Unrealized (losses) from other changes in total other-than-temporary impairments recognized in other comprehensive income (loss) as part of changes in net unrealized gains (losses) on investment securities having credit losses recognized in the consolidated statement of income Consolidating Statement of Comprehensive Income [Table] Condensed Statement of Comprehensive Income [Table] Consolidating Statement of Comprehensive Income Condensed Statement of Income Captions [Line Items] Income tax expense (benefit) Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries Other comprehensive income, net of taxes, before other comprehensive income of subsidiaries Amount after tax and reclassification adjustments of other comprehensive income (loss) before other comprehensive income (loss) of subsidiaries. Other comprehensive income (loss) of subsidiaries Other comprehensive income of subsidiaries Amount after tax and reclassification adjustments of other comprehensive income (loss) of subsidiaries.