The Travelers Companies, Inc. (TRV) 10-Q 22 Jul 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 18, 2014
Entity [Domain]	'	'
Registrant name	'Travelers Companies, Inc.	'
Central index key	'0000086312	'
Document type	'10-Q	'
Document period end date	30-Jun-14	'
Amendment flag	'false	'
Current fiscal year end date	'--12-31	'
Well-known seasoned issuer	'Yes	'
Voluntary filers	'No	'
Current reporting status	'Yes	'
Filer category	'Large Accelerated Filer	'
Common stock shares outstanding	'	339,043,610
Document fiscal year focus	'2014	'
Document fiscal period focus	'Q2	'

Consolidated_Statement_of_Inco

Consolidated Statement of Income (Unaudited) (USD $)	3 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Revenues	'		'		'		'
Premiums	$5,928		$5,603		$11,751		$11,120
Net investment income	695		687		1,431		1,357
Fee income	112		82		219		179
Net realized investment gains	16	[1]	167	[1]	17	[1]	177	[1]
Other revenues	34		135		75		169
Total revenues	6,785		6,674		13,493		13,002
Claims and expenses	'		'		'		'
Claims and claim adjustment expenses	3,826		3,530		7,141		6,683
Amortization of deferred acquisition costs	965		950		1,915		1,898
General and administrative expenses	1,001		931		1,882		1,846
Interest expense	92		86		184		178
Total claims and expenses	5,884		5,497		11,122		10,605
Income before income taxes	901		1,177		2,371		2,397
Income tax expense	218		252		636		576
Net income	$683		$925		$1,735		$1,821
Net income per share	'		'		'		'
Net income per share, basic	$1.98		$2.44		$4.97		$4.80
Net income per share, diluted	$1.95		$2.41		$4.91		$4.75
Weighted average number of common shares outstanding	'		'		'		'
Weighted average number of common shares outstanding, basic	343		375.9		346.9		376.8
Weighted average number of common shares outstanding, diluted	346.7		379.9		350.5		380.8
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(1) million and $(1) million for the three months ended June 30, 2014 and 2013, respectively, and $(8) million and $(1) million for the six months ended June 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(1) million and $(2) million for the three months ended June 30, 2014 and 2013, respectively, and $(10) million and $(7) million for the six months ended June 30, 2014 and 2013, respectively, were recognized in net realized investment gains. In addition, unrealized gains from other changes in total OTTI of $0 million and $1 million for the three months ended June 30, 2014 and 2013, respectively, and $2 million and $6 million for the six months ended June 30, 2014 and 2013, respectively, were recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income.

Consolidated_Statement_of_Inco1

Consolidated Statement of Income Parentheticals (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statement of Income (Unaudited)	'	'	'	'
Total other-than-temporary impairment gains (losses)	($1)	($1)	($8)	($1)
Other-than-temporary impairment, credit losses recognized in net realized investment gains	-1	-2	-10	-7
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 on investment securities having credit losses recognized in the consolidated statement of income	$0	$1	$2	$6

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (Loss) (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statement of Comprehensive Income (Loss) (Unaudited)	'	'	'	'
Net income	$683	$925	$1,735	$1,821
Other comprehensive income (loss):	'	'	'	'
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	518	-1,790	1,055	-2,166
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	1	-5	3	4
Net changes in benefit plan assets and obligations	15	26	30	54
Net changes in unrealized foreign currency translation	97	-73	54	-169
Other comprehensive income (loss) before income taxes	631	-1,842	1,142	-2,277
Income tax expense (benefit)	196	-636	390	-761
Other comprehensive income (loss), net of taxes	435	-1,206	752	-1,516
Comprehensive income (loss)	$1,118	($281)	$2,487	$305

Consolidated_Balance_Sheet_Una

Consolidated Balance Sheet (Unaudited at June 30, 2014) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'	'	'	'
Fixed maturities, available for sale, at fair value (amortized cost $61,841 and $62,196)	$64,583	$63,956	'	'
Equity securities, available for sale, at fair value (cost $648 and $686)	980	943	'	'
Real estate investments	954	938	'	'
Short-term securities	3,818	3,882	'	'
Other investments	3,606	3,441	'	'
Total investments	73,941	73,160	'	'
Cash	311	294	308	330
Investment income accrued	710	734	'	'
Premiums receivable	6,589	6,125	'	'
Reinsurance recoverables	9,508	9,713	'	'
Ceded unearned premiums	762	801	'	'
Deferred acquisition costs	1,879	1,804	'	'
Deferred taxes	'	303	'	'
Contractholder receivables	4,371	4,328	'	'
Goodwill	3,634	3,634	'	'
Other intangible assets	328	351	'	'
Other assets	2,778	2,565	'	'
Total assets	104,811	103,812	'	'
Liabilities	'	'	'	'
Claims and claim adjustment expense reserves	50,856	50,895	'	'
Unearned premium reserves	12,089	11,850	'	'
Contractholder payables	4,371	4,328	'	'
Payables for reinsurance premiums	397	298	'	'
Deferred taxes	239	'	'	'
Debt	6,347	6,346	'	'
Other liabilities	4,980	5,299	'	'
Total liabilities	79,279	79,016	'	'
Shareholders' equity	'	'	'	'
Common stock (1,750.0 shares authorized; 339.0 and 353.5 shares issued and outstanding)	21,694	21,500	21,367	21,161
Retained earnings	25,662	24,291	22,806	21,352
Accumulated other comprehensive income	1,562	810	720	2,236
Treasury stock, at cost (419.5 and 401.5 shares)	-23,386	-21,805	-20,003	-19,344
Total shareholders' equity	25,532	24,796	24,890	'
Total liabilities and shareholders' equity	$104,811	$103,812	'	'

Consolidated_Balance_Sheet_Par

Consolidated Balance Sheet Parentheticals (Unaudited at June 30, 2014) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Consolidated Balance Sheet (Unaudited at June 30, 2014)	'	'	'	'
Fixed maturities, available for sale, amortized cost	$61,841	$62,196	'	'
Equity securities, available for sale, cost	$648	$686	'	'
Common stock, shares authorized	1,750	1,750	'	'
Common stock, shares issued	339	353.5	'	'
Common stock, shares outstanding	339	353.5	373.5	377.4
Treasury stock, at cost, shares	419.5	401.5	'	'

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Common stock	'	'
Common stock, balance, beginning of year	$21,500	$21,161
Common stock, employee share-based compensation	94	106
Common stock, compensation amortization under share-based plans and other changes	100	100
Common stock, balance, end of period	21,694	21,367
Retained earnings	'	'
Retained earnings, balance, beginning of year	24,291	21,352
Net income	1,735	1,821
Dividends	-367	-367
Retained earnings, other	3	'
Retained earnings, balance, end of period	25,662	22,806
Accumulated other comprehensive income, net of tax	'	'
Accumulated other comprehensive income, net of tax, balance, beginning of year	810	2,236
Other comprehensive income (loss)	752	-1,516
Accumulated other comprehensive income, net of tax, balance, end of period	1,562	720
Treasury stock (at cost)	'	'
Treasury stock (at cost), balance, beginning of year	-21,805	-19,344
Treasury stock (at cost), treasury stock acquired - share repurchase authorization	-1,525	-600
Treasury stock (at cost), net shares acquired related to employee share-based compensation plans	-56	-59
Treasury stock (at cost), balance, end of period	-23,386	-20,003
Total shareholders' equity	$25,532	$24,890
Common shares outstanding	'	'
Common shares outstanding, balance, beginning of year	353.5	377.4
Common shares outstanding, treasury stock acquired - share repurchase authorization	-17.3	-7.3
Common shares outstanding, net shares issued under employee share-based compensation plans	2.8	3.4
Common shares outstanding, balance, end of period	339	373.5

Consolidated_Statement_of_Cash

Consolidated Statement of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013
Cash flows from operating activities	'		'
Net income	$1,735		$1,821
Adjustments to reconcile net income to net cash provided by operating activities:	'		'
Net realized investment gains	-17	[1]	-177	[1]
Depreciation and amortization	442		435
Deferred federal income tax expense	131		151
Amortization of deferred acquisition costs	1,915		1,898
Equity in income from other investments	-257		-175
Change in premiums receivable	-463		-403
Change in reinsurance recoverables	206		747
Change in deferred acquisition costs	-1,989		-1,912
Change in claims and claim adjustment expense reserves	-60		-1,128
Change in unearned premium reserves	235		345
Other operating activities	-550		-350
Net cash provided by operating activities	1,328		1,252
Cash flows from investing activities	'		'
Proceeds from maturities of fixed maturities	4,915		3,901
Proceeds from sales of investments, fixed maturities	785		572
Proceeds from sales of investments, equity securities	95		50
Proceeds from sales of investments, real estate investments	5		'
Proceeds from sales of investments, other investments	338		381
Purchases of investments, fixed maturities	-5,449		-4,488
Purchases of investments, equity securities	-40		-40
Purchases of investments, real estate investments	-36		-59
Purchases of investments, other investments	-226		-209
Net sales of short-term securities	60		81
Securities transactions in course of settlement	204		60
Acquisition, net of cash acquired	-12		'
Other investing activities	-152		-157
Net cash provided by investing activities	487		92
Cash flows from financing activities	'		'
Payment of debt	'		-500
Dividends paid to shareholders	-365		-366
Issuance of common stock - employee share options	122		139
Treasury stock acquired - share repurchase authorization	-1,525		-600
Treasury stock acquired - net employee share-based compensation	-55		-59
Excess tax benefits from share-based payment arrangements	24		29
Net cash used in financing activities	-1,799		-1,357
Effect of exchange rate changes on cash	1		-9
Net increase (decrease) in cash	17		-22
Cash at beginning of year	294		330
Cash at end of period	311		308
Supplemental disclosure of cash flow information	'		'
Income taxes paid	727		495
Interest paid	$183		$184
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(1) million and $(1) million for the three months ended June 30, 2014 and 2013, respectively, and $(8) million and $(1) million for the six months ended June 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(1) million and $(2) million for the three months ended June 30, 2014 and 2013, respectively, and $(10) million and $(7) million for the six months ended June 30, 2014 and 2013, respectively, were recognized in net realized investment gains. In addition, unrealized gains from other changes in total OTTI of $0 million and $1 million for the three months ended June 30, 2014 and 2013, respectively, and $2 million and $6 million for the six months ended June 30, 2014 and 2013, respectively, were recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income.

Basis_of_Presentation_and_Acco

Basis of Presentation and Accounting Policies	6 Months Ended
	Jun. 30, 2014
Basis of Presentation and Accounting Policies disclosure	'
Basis of Presentation and Accounting Policies disclosure [Text Block]	'
	1.                       BASIS OF PRESENTATION AND ACCOUNTING POLICIES
	Basis of Presentation
	The interim consolidated financial statements include the accounts of The Travelers Companies, Inc. (together with its subsidiaries, the Company). These financial statements are prepared in conformity with U.S. generally accepted accounting principles (GAAP) and are unaudited.  In the opinion of the Company’s management, all adjustments necessary for a fair presentation have been reflected.  Certain financial information that is normally included in annual financial statements prepared in accordance with GAAP, but that is not required for interim reporting purposes, has been omitted.  All material intercompany transactions and balances have been eliminated.  The accompanying interim consolidated financial statements and related notes should be read in conjunction with the Company’s consolidated financial statements and related notes included in the Company’s 2013 Annual Report on Form 10-K.
	The preparation of the interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the interim consolidated financial statements and the reported amounts of revenues and claims and expenses during the reporting period.  Actual results could differ from those estimates.
	On November 1, 2013, the Company acquired all of the issued and outstanding shares of The Dominion of Canada General Insurance Company (Dominion) for an aggregate purchase price of approximately $1.035 billion. Dominion primarily markets personal lines and small commercial insurance business in Canada. At the acquisition date, the Company recorded at fair value $3.91 billion of assets acquired and $2.88 billion of liabilities assumed as part of purchase accounting, including $16 million of identifiable intangible assets and $273 million of goodwill. The operating income and the amount of assets acquired from Dominion were included in the Company’s Financial, Professional & International Insurance segment effective at the acquisition date.
	Adoption of Accounting Standards Updates
	Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date
	In February 2013, the Financial Accounting Standards Board (FASB) issued updated guidance to resolve diversity in practice concerning the recognition, measurement, and disclosure of obligations resulting from certain joint and several liability arrangements for which the total amount under the arrangement is fixed at the reporting date.  The guidance requires that the reporting entity measure joint and several liability arrangements as the amount the reporting entity agreed to pay on the basis of its arrangement among the co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors.  The updated guidance was effective for the quarter ending March 31, 2014. The adoption of this guidance did not have any effect on the Company’s results of operations, financial position or liquidity.
	Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity
	In March 2013, the FASB issued updated guidance to resolve diversity in practice concerning the release of the cumulative foreign currency translation adjustment into net income when a parent sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within a foreign entity.  When a company ceases to have a controlling financial interest in a subsidiary within a foreign entity, the company should recognize any related cumulative translation adjustment into net income only if the sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary had resided. Upon the partial sale of an equity method investment that is a foreign entity, the company should release into earnings a pro rata portion of the cumulative translation adjustment. Upon the partial sale of an equity method investment that is not a foreign entity, the company should release into earnings the cumulative translation adjustment if the partial sale represents a complete or substantially complete liquidation of the foreign entity that holds the equity method investment.  The updated guidance was effective for the quarter ending March 31, 2014.  The adoption of this guidance did not have any effect on the Company’s results of operations, financial position or liquidity.
	Accounting Standards Not Yet Adopted
	Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity
	In April 2014, the FASB issued revised guidance to reduce diversity in practice for reporting discontinued operations. Under the previous guidance, any component of an entity that was a reportable segment, an operating segment, a reporting unit, a subsidiary, or an asset group was eligible for discontinued operations presentation. The revised guidance only allows disposals of components of an entity that represent a strategic shift (e.g., disposal of a major geographical area, a major line of business, a major equity method investment, or other major parts of an entity) and that have a major effect on a reporting entity’s operations and financial results to be reported as discontinued operations. The revised guidance also requires expanded disclosure in the financial statements for discontinued operations as well as for disposals of significant components of an entity that do not qualify for discontinued operations presentation. The updated guidance is effective for the quarter ending March 31, 2015. The adoption of this guidance is not expected to have a material effect on the Company’s results of operations, financial position or liquidity.
	Revenue from Contracts with Customers
	In May 2014, the FASB issued updated guidance to clarify the principles for recognizing revenue. While insurance contracts are not within the scope of this updated guidance, the Company’s fee income related to providing claims and policy management services as well as claim and loss prevention services will be subject to this updated guidance.
	The updated guidance requires an entity to recognize revenue as performance obligations are met, in order to reflect the transfer of promised goods or services to customers in an amount that reflects the consideration the entity is entitled to receive for those goods or services.  The following steps are applied in the updated guidance: (1) identify the contract(s) with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when, or as, the entity satisfies a performance obligation.
	The updated guidance is effective for the quarter ending March 31, 2017.  The adoption of this guidance is not expected to have a material effect on the Company’s results of operations, financial position, or liquidity.
	Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period
	In June 2014, the FASB issued updated guidance to resolve diversity in practice concerning employee share-based payments that contain performance targets that could be achieved after the requisite service period. Many reporting entities account for performance targets that could be achieved after the requisite service period as performance conditions that affect the vesting of the award and, therefore, do not reflect the performance targets in the estimate of the grant-date fair value of the award. Other reporting entities treat those performance targets as nonvesting conditions that affect the grant-date fair value of the award.
	The updated guidance requires that a performance target that affects vesting and that can be achieved after the requisite service period be treated as a performance condition. As such, the performance target that affects vesting should not be reflected in estimating that fair value of the award at the grant date. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which service has been rendered. If the performance target becomes probable of being achieved before the end of the service period, the remaining unrecognized compensation cost for which requisite service has not yet been rendered is recognized prospectively over the remaining service period. The total amount of compensation cost recognized during and after the service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest.
	The updated guidance is effective for annual and interim periods beginning after December 15, 2015, with early adoption permitted. The adoption of this guidance is not expected to have a material effect on the Company’s results of operations, financial position or liquidity.
	Nature of Operations
	For the periods presented in these financial statements, the Company was organized into three reportable business segments: Business Insurance; Financial, Professional & International Insurance; and Personal Insurance. These segments reflected the manner in which the Company’s businesses were managed and represented an aggregation of products and services based on type of customer, how the business was marketed and the manner in which risks were underwritten.  The specific business segments presented in these financial statements are as follows:
	Business Insurance
	The Business Insurance segment offers a broad array of property and casualty insurance and insurance-related services to its clients primarily in the United States. Business Insurance is organized into the following six groups, which collectively comprise Business Insurance Core operations: Select Accounts; Commercial Accounts; National Accounts; Industry-Focused Underwriting; Target Risk Underwriting; and Specialized Distribution.
	Business Insurance also includes the Special Liability Group (which manages the Company’s asbestos and environmental liabilities) and the assumed reinsurance and certain other runoff operations, which collectively are referred to as Business Insurance Other.
	Financial, Professional & International Insurance
	The Financial, Professional & International Insurance segment includes surety and financial liability coverages, which primarily use credit-based underwriting processes, as well as property and casualty products that are primarily marketed on a domestic basis in Canada, the United Kingdom and the Republic of Ireland, and on an international basis through Lloyd’s.  The segment includes the Bond & Financial Products group as well as the International group.  The International group includes Dominion, which the Company acquired in November 2013 and which writes personal lines and small commercial insurance business in Canada.
	In addition, the Company owns 49.5% of the common stock of J. Malucelli Participações em Seguros e Resseguros S.A. (JMalucelli), its joint venture in Brazil.  JMalucelli primarily writes surety business in Brazil, as well as other property and casualty insurance business in Brazil.  The Company’s investment in JMalucelli is accounted for using the equity method and is included in “other investments” on the consolidated balance sheet.
	Personal Insurance
	The Personal Insurance segment writes a broad range of property and casualty insurance covering individuals’ personal risks. The primary products of automobile and homeowners insurance are complemented by a broad suite of related coverages.
	On June 10, 2014, the Company announced a realignment of its management team that gave rise to a realignment of two of its three business segments, effective July 1, 2014.  The Company’s International Insurance group, which had previously been included in the Financial, Professional & International Insurance segment, will be combined with the Company’s previous Business Insurance segment to create a new Business & International Insurance segment.  The Bond & Financial Products group, which was the remaining business in the Financial, Professional & International Insurance segment, will now comprise the new Bond & Financial Products segment.  The Personal Insurance segment will not be impacted by these changes.  The changes were designed to reflect the realignment of the Company’s management team and the manner in which the Company’s businesses are managed effective July 1, 2014, and represent an aggregation of products and services based on type of customer, how the business is marketed and the manner in which risks are underwritten.  The newly aligned segments will be presented in the Company’s financial statements beginning with the period ending September 30, 2014 and the prior periods presented will be restated to conform to the new presentation.

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2014
Segment Information disclosure	'
Segment Information disclosure [Text Block]	'
	2.                                      SEGMENT INFORMATION
	The following tables summarize the components of the Company’s revenues, operating income and total assets by reportable business segments:
	(for the three months	Business			Financial,			Personal			Total
	ended June 30,	Insurance			Professional &			Insurance			Reportable
	in millions)				International						Segments
					Insurance
	2014
	Premiums	$	3,067		$	1,088		$	1,773		$	5,928
	Net investment income	496			105			94			695
	Fee income	111			1			—			112
	Other revenues	8			8			17			33
	Total operating revenues (1)	$	3,682		$	1,202		$	1,884		$	6,768
	Operating income (1)	$	409		$	254		$	75		$	738
	2013
	Premiums	$	3,018		$	751		$	1,834		$	5,603
	Net investment income	502			91			94			687
	Fee income	82			—			—			82
	Other revenues	114			5			15			134
	Total operating revenues (1)	$	3,716		$	847		$	1,943		$	6,506
	Operating income (1)	$	579		$	154		$	142		$	875
	(1)     Operating revenues for reportable business segments exclude net realized investment gains (losses). Operating income for reportable business segments equals net income excluding the after-tax impact of net realized investment gains (losses).
	(for the six months	Business			Financial,			Personal			Total
	ended June 30,	Insurance			Professional &			Insurance			Reportable
	in millions)				International						Segments
					Insurance
	2014
	Premiums	$	6,083		$	2,133		$	3,535		$	11,751
	Net investment income	1,026			211			194			1,431
	Fee income	218			1			—			219
	Other revenues	16			16			43			75
	Total operating revenues (1)	$	7,343		$	2,361		$	3,772		$	13,476
	Operating income (1)	$	1,062		$	449		$	343		$	1,854
	2013
	Premiums	$	5,960		$	1,486		$	3,674		$	11,120
	Net investment income	989			183			185			1,357
	Fee income	179			—			—			179
	Other revenues	127			10			33			170
	Total operating revenues (1)	$	7,255		$	1,679		$	3,892		$	12,826
	Operating income (1)	$	1,169		$	317		$	339		$	1,825
	(1)     Operating revenues for reportable business segments exclude net realized investment gains (losses). Operating income for reportable business segments equals net income excluding the after-tax impact of net realized investment gains (losses).
	Business Segment Reconciliations
		Three Months Ended						Six Months Ended
		June 30,						June 30,
	(in millions)	2014			2013			2014			2013
	Revenue reconciliation
	Earned premiums
	Business Insurance:
	Workers’ compensation	$	923		$	897		$	1,831		$	1,744
	Commercial automobile	473			474			941			949
	Commercial property	440			418			868			827
	General liability	457			444			904			881
	Commercial multi-peril	763			776			1,518			1,541
	Other	11			9			21			18
	Total Business Insurance	3,067			3,018			6,083			5,960
	Financial, Professional & International Insurance:
	Fidelity and surety	238			228			460			448
	General liability	241			221			478			434
	International	564			258			1,106			516
	Other	45			44			89			88
	Total Financial, Professional & International Insurance	1,088			751			2,133			1,486
	Personal Insurance:
	Automobile	821			864			1,636			1,736
	Homeowners and other	952			970			1,899			1,938
Total Personal Insurance	1,773			1,834			3,535			3,674
Total earned premiums	5,928			5,603			11,751			11,120
Net investment income	695			687			1,431			1,357
Fee income	112			82			219			179
Other revenues	33			134			75			170
Total operating revenues for reportable segments	6,768			6,506			13,476			12,826
Other revenues	1			1			—			(1		)
Net realized investment gains	16			167			17			177
Total consolidated revenues	$	6,785		$	6,674		$	13,493		$	13,002
Income reconciliation, net of tax
Total operating income for reportable segments	$	738		$	875		$	1,854		$	1,825
Interest Expense and Other (1)	(65		)	(59		)	(129		)	(122		)
Total operating income	673			816			1,725			1,703
Net realized investment gains	10			109			10			118
Total consolidated net income	$	683		$	925		$	1,735		$	1,821
(1)     The primary component of Interest Expense and Other is after-tax interest expense of $60 million and $56 million in the three months ended June 30, 2014 and 2013, respectively, and $120 million and $116 million in the six months ended June 30, 2014 and 2013, respectively.
(in millions)	June 30,			December 31,
	2014			2013
Asset reconciliation:
Business Insurance	$	74,470		$	73,746
Financial, Professional & International Insurance	16,856			16,691
Personal Insurance	12,948			12,870
Total assets for reportable segments	104,274			103,307
Other assets (1)	537			505
Total consolidated assets	$	104,811		$	103,812
(1)     The primary components of other assets at both dates were other intangible assets and accrued over-funded benefit plan assets related to the Company’s qualified domestic pension plan.

Investments

Investments	6 Months Ended
	Jun. 30, 2014
Investments disclosure	'
Investments disclsoure [Text Block]	'
	3.                       INVESTMENTS
	Fixed Maturities
	The amortized cost and fair value of investments in fixed maturities classified as available for sale were as follows:
		Amortized		Gross Unrealized				Fair
	(at June 30, 2014, in millions)	Cost		Gains		Losses		Value
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,060	$	40	$	6	$	2,094
	Obligations of states, municipalities and political subdivisions:
	Pre-refunded	8,096		359		—		8,455
	All other	25,309		1,341		80		26,570
	Total obligations of states, municipalities and political subdivisions	33,405		1,700		80		35,025
	Debt securities issued by foreign governments	2,549		37		4		2,582
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,154		178		6		2,326
	All other corporate bonds	21,541		969		95		22,415
	Redeemable preferred stock	132		9		—		141
	Total	$	61,841	$	2,933	$	191	$	64,583
		Amortized		Gross Unrealized				Fair
	(at December 31, 2013, in millions)	Cost		Gains		Losses		Value
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,288	$	39	$	12	$	2,315
	Obligations of states, municipalities and political subdivisions:
	Pre-refunded	9,074		445		1		9,518
	All other	25,414		991		361		26,044
	Total obligations of states, municipalities and political subdivisions	34,488		1,436		362		35,562
	Debt securities issued by foreign governments	2,552		33		8		2,577
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,263		179		18		2,424
	All other corporate bonds	20,472		767		299		20,940
	Redeemable preferred stock	133		6		1		138
	Total	$	62,196	$	2,460	$	700	$	63,956
	Pre-refunded bonds of $8.46 billion and $9.52 billion at June 30, 2014 and December 31, 2013, respectively, were bonds for which 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.
	Equity Securities
	The cost and fair value of investments in equity securities were as follows:
				Gross Unrealized				Fair
	(at June 30, 2014, in millions)	Cost		Gains		Losses		Value
	Common stock	$	396	$	303	$	—	$	699
	Non-redeemable preferred stock	252		31		2		281
	Total	$	648	$	334	$	2	$	980
				Gross Unrealized				Fair
	(at December 31, 2013, in millions)	Cost		Gains		Losses		Value
	Common stock	$	385	$	226	$	1	$	610
	Non-redeemable preferred stock	301		34		2		333
	Total	$	686	$	260	$	3	$	943
	Unrealized Investment Losses
	The following tables summarize, for all investments in an unrealized loss position at June 30, 2014 and December 31, 2013, the aggregate fair value and gross unrealized loss by length of time those securities have been continuously in an unrealized loss position.  The fair value amounts reported in the tables are estimates that are prepared using the process described in note 4.
		Less than 12 months				12 months or longer					Total
	(at June 30, 2014, in millions)	Fair		Gross		Fair		Gross			Fair			Gross
		Value		Unrealized		Value		Unrealized			Value			Unrealized
				Losses				Losses						Losses
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	40	$	1	$	106	$	5		$	146		$	6
	Obligations of states, municipalities and political subdivisions	1,378		4		2,750		76			4,128			80
	Debt securities issued by foreign governments	425		2		115		2			540			4
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	77		—		268		6			345			6
	All other corporate bonds	1,015		7		2,914		88			3,929			95
	Total fixed maturities	2,935		14		6,153		177			9,088			191
	Equity securities
	Common stock	29		—		1		—			30			—
	Non-redeemable preferred stock	152		2		—		—			152			2
	Total equity securities	181		2		1		—			182			2
	Total	$	3,116	$	16	$	6,154	$	177		$	9,270		$	193
		Less than 12 months				12 months or longer					Total
	(at December 31, 2013, in millions)	Fair		Gross		Fair		Gross			Fair			Gross
		Value		Unrealized		Value		Unrealized			Value			Unrealized
				Losses				Losses						Losses
	Fixed maturities
U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	433	$	12	$	—	$	—		$	433		$	12
Obligations of states, municipalities and political subdivisions	4,785		298		432		64			5,217			362
Debt securities issued by foreign governments	907		8		1		—			908			8
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	542		17		21		1			563			18
All other corporate bonds	6,887		253		421		46			7,308			299
Redeemable preferred stock	82		1		—		—			82			1
Total fixed maturities	13,636		589		875		111			14,511			700
Equity securities
Common stock	53		1		—		—			53			1
Non-redeemable preferred stock	147		2		—		—			147			2
Total equity securities	200		3		—		—			200			3
Total	$	13,836	$	592	$	875	$	111		$	14,711		$	703
The following table summarizes, for all fixed maturities and equity securities reported at fair value for which fair value is less than 80% of amortized cost at June 30, 2014, the gross unrealized investment loss by length of time those securities have continuously been in an unrealized loss position of greater than 20% of amortized cost:
	Period For Which Fair Value Is Less Than 80% of Amortized Cost
(at June 30, 2014, in millions)	3 Months		Greater Than 3		Greater Than 6		Greater Than			Total
	or Less		Months, 6 Months		Months, 12 Months		12 Months
			or Less		or Less
Fixed maturities
Mortgage-backed securities	$	—	$	—	$	—	$	—		$	—
Other	1		4		1		2			8
Total fixed maturities	1		4		1		2			8
Equity securities	—		—		—		—			—
Total	$	1	$	4	$	1	$	2		$	8
These unrealized losses at June 30, 2014 represented less than 1% of the combined fixed maturity and equity security portfolios on a pretax basis and less than 1% of shareholders’ equity on an after-tax basis.
Impairment Charges
Impairment charges included in net realized investment gains in the consolidated statement of income were as follows:
	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in millions)	2014		2013		2014		2013
Fixed maturities
U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	—	$	—	$	—	$	—
Obligations of states, municipalities and political subdivisions	—		—		—		—
Debt securities issued by foreign governments	—		—		—		—
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	1		1		1		2
All other corporate bonds	—		—		3		—
Redeemable preferred stock	—		—		—		—
Total fixed maturities	1		1		4		2
Equity securities
Common stock	—		1		5		1
Non-redeemable preferred stock	—		—		—		—
Total equity securities	—		1		5		1
Other investments	—		—		1		4
Total	$	1	$	2	$	10	$	7
The following tables present the cumulative amount of and the changes during the reporting period in the credit losses 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:
	2014
(for the three months ended June 30, in	Cumulative		Additions for		Additions for		Reductions			Adjustments to			Cumulative
millions)	OTTI Credit		OTTI Securities		OTTI		Due to			Book Value of			OTTI Credit
	Losses		Where No		Securities		Sales/Defaults			Credit-			Losses
	Recognized for		Credit Losses		Where Credit		of Credit-			Impaired			Recognized for
	Securities		Were Previously		Losses Have		Impaired			Securities due			Securities Still
	Held,		Recognized		Been		Securities			to Changes in			Held, End of
	Beginning of				Previously					Cash Flows			Period
	Period				Recognized
Fixed maturities
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	42	$	—	$	1	$	—		$	—		$	43
All other corporate bonds	69		—		—		—			(3		)	66
Total fixed maturities	$	111	$	—	$	1	$	—		$	(3	)	$	109
(for the six months ended June 30, in
millions)
Fixed maturities
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	53	$	—	$	1	$	(3	)	$	(8	)	$	43
All other corporate bonds	65		—		3		—			(2		)	66
Total fixed maturities	$	118	$	—	$	4	$	(3	)	$	(10	)	$	109
	2013
(for the three months ended June 30, in	Cumulative		Additions for		Additions for		Reductions			Adjustments to			Cumulative
millions)	OTTI Credit		OTTI Securities		OTTI		Due to			Book Value of			OTTI Credit
	Losses		Where No		Securities		Sales/Defaults			Credit-			Losses
	Recognized for		Credit Losses		Where Credit		of Credit-			Impaired			Recognized for
	Securities		Were Previously		Losses Have		Impaired			Securities due			Securities Still
	Held,		Recognized		Been		Securities			to Changes in			Held, End of
	Beginning of				Previously					Cash Flows			Period
	Period				Recognized
Fixed maturities
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	55	$	—	$	1	$	—		$	(1	)	$	55
All other corporate bonds	71		—		—		—			(1		)	70
Total fixed maturities	$	126	$	—	$	1	$	—		$	(2	)	$	125
(for the six months ended June 30, in
millions)
Fixed maturities
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	55	$	—	$	2	$	—		$	(2	)	$	55
All other corporate bonds	72		—		—		—			(2		)	70
Total fixed maturities	$	127	$	—	$	2	$	—		$	(4	)	$	125
Derivative Financial Instruments
From time to time, the Company enters into U.S. Treasury note futures contracts to modify the effective duration of specific assets within the investment portfolio.  U.S. Treasury futures contracts require a daily mark-to-market and settlement with the broker.  At June 30, 2014 and December 31, 2013, the Company had $100 million and $0 notional value of open U.S. Treasury futures contracts, respectively.  Net realized investment gains in the three months ended June 30, 2014 and 2013 included net losses of $1 million and net gains of $134 million, respectively, related to U.S. Treasury futures contracts.  Net realized investment gains in the six months ended June 30, 2014 and 2013 included net losses of $0.2 million and net gains of $115 million, respectively, related to U.S. Treasury futures contracts.

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2014
Fair Value Measurements disclosure	'
Fair Value Measurements disclosure [Text Block]	'
	4.                       FAIR VALUE MEASUREMENTS
	The Company’s estimates of fair value for financial assets and financial liabilities are based on the framework established in the fair value accounting guidance.  The framework is based on the inputs used in valuation, gives the highest priority to quoted prices in active markets and requires that observable inputs be used in the valuations when available.  The disclosure of fair value estimates in the fair value accounting guidance hierarchy is based on whether the significant inputs into the valuation are observable.  In determining the level of the hierarchy in which the estimate is disclosed, the highest priority is given to unadjusted quoted prices in active markets and the lowest priority to unobservable inputs that reflect the Company’s significant market assumptions.  The level in the fair value hierarchy within which the fair value measurement is reported is based on the lowest level input that is significant to the measurement in its entirety.  The three levels of the hierarchy are as follows:
	·       Level 1- Unadjusted quoted market prices for identical assets or liabilities in active markets that the Company has the ability to access.
	·       Level 2- Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in inactive markets; or valuations based on models where the significant inputs are observable (e.g., interest rates, yield curves, prepayment speeds, default rates, loss severities, etc.) or can be corroborated by observable market data.
	·       Level 3- Valuations based on models where significant inputs are not observable.  The unobservable inputs reflect the Company’s own assumptions about the inputs that market participants would use.
	Valuation of Investments Reported at Fair Value in Financial Statements
	The fair value of a financial instrument is the estimated amount at which the instrument could be exchanged in an orderly transaction between knowledgeable, unrelated, willing parties; i.e., not in a forced transaction.  The estimated fair value of a financial instrument may differ from the amount that could be realized if the security was sold in an immediate sale, e.g.; a forced transaction.  Additionally, the valuation of investments is more subjective when markets are less liquid due to the lack of market based inputs, which may increase the potential that the estimated fair value of an investment is not reflective of the price at which an actual transaction would occur.
	For investments that have quoted market prices in active markets, the Company uses the unadjusted quoted market prices as fair value and includes these prices in the amounts disclosed in Level 1 of the hierarchy.  The Company receives the quoted market prices from a third party, nationally recognized pricing service (pricing service).  When quoted market prices are unavailable, the Company utilizes a pricing service to determine an estimate of fair value, which is mainly used for its fixed maturity investments.  The fair value estimates provided from this pricing service are included in the amount disclosed in Level 2 of the hierarchy.  If quoted market prices and an estimate from a pricing service are unavailable, the Company produces an estimate of fair value based on internally developed valuation techniques, which, depending on the level of observable market inputs, will render the fair value estimate as Level 2 or Level 3.  The Company bases all of its estimates of fair value for assets on the bid price as it represents what a third-party market participant would be willing to pay in an arm’s length transaction.
	Fixed Maturities
	The Company utilized a pricing service to estimate fair value measurements for approximately 98% of its fixed maturities at both June 30, 2014 and December 31, 2013.  The pricing service utilizes market quotations for fixed maturity securities that have quoted prices in active markets.  Since fixed maturities other than U.S. Treasury securities generally do not trade on a daily basis, the pricing service prepares estimates of fair value measurements for these securities using its proprietary pricing applications, which include available relevant market information, benchmark curves, benchmarking of like securities, sector groupings and matrix pricing.  Additionally, the pricing service uses an Option Adjusted Spread model to develop prepayment and interest rate scenarios.
	The pricing service evaluates each asset class based on relevant market information, relevant credit information, perceived market movements and sector news.  The market inputs utilized in the pricing evaluation, listed in the approximate order of priority, include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, reference data, and industry and economic events.  The extent of the use of each market input depends on the asset class and the market conditions.  Depending on the security, the priority of the use of inputs may change or some market inputs may not be relevant.  For some securities, additional inputs may be necessary.
	The pricing service utilized by the Company has indicated that it will only produce an estimate of fair value if there is objectively verifiable information to produce a valuation.  If the pricing service discontinues pricing an investment, the Company would be required to produce an estimate of fair value using some of the same methodologies as the pricing service but would have to make assumptions for any market-based inputs that were unavailable due to market conditions.
	The fair value estimates of most fixed maturity investments are based on observable market information rather than market quotes.  Accordingly, the estimates of fair value for such fixed maturities, other than U.S. Treasury securities, provided by the pricing service are included in the amount disclosed in Level 2 of the hierarchy.  The estimated fair value of U.S. Treasury securities is included in the amount disclosed in Level 1 as the estimates are based on unadjusted market prices.
	The Company also holds certain fixed maturity investments which are not priced by the pricing service and, accordingly, estimates the fair value of such fixed maturities using an internal matrix that is based on market information regarding interest rates, credit spreads and liquidity.  The underlying source data for calculating the matrix of credit spreads relative to the U.S. Treasury curve are the BofA Merrill Lynch U.S. Corporate Index and the BofA Merrill Lynch High Yield BB Rated Index.  The Company includes the fair value estimates of these corporate bonds in Level 2, since all significant inputs are market observable.
	While the vast majority of the Company’s municipal bonds and corporate bonds are included in Level 2, the Company holds a number of municipal bonds and corporate bonds which are not valued by the pricing service and estimates the fair value of these bonds using an internal pricing matrix with some unobservable inputs that are significant to the valuation.  Due to the limited amount of observable market information, the Company includes the fair value estimates for these particular bonds in Level 3.  The fair value of the fixed maturities for which the Company used an internal pricing matrix was $134 million and $94 million at June 30, 2014 and December 31, 2013, respectively. Additionally, the Company holds a small amount of other fixed maturity investments that have characteristics that make them unsuitable for matrix pricing.  For these fixed maturities, the Company obtains a quote from a broker (primarily the market maker).  The fair value of the fixed maturities for which the Company received a broker quote was $130 million and $161 million at June 30, 2014 and December 31, 2013, respectively.  Due to the disclaimers on the quotes that indicate that the price is indicative only, the Company includes these fair value estimates in Level 3.
	Equities — Public Common and Preferred
	For public common and preferred stocks, the Company receives prices from a nationally recognized pricing service that are based on observable market transactions and includes these estimates in the amount disclosed in Level 1.  When current market quotes in active markets are unavailable for certain non-redeemable preferred stocks held by the Company, the Company receives an estimate of fair value from the pricing service that provides fair value estimates for the Company’s fixed maturities. The service utilizes similar methodologies to price the non-redeemable preferred stocks as it does for the fixed maturities. The Company includes the fair value estimate for these non-redeemable preferred stocks in the amount disclosed in Level 2.
	Other Investments
	The Company holds investments in various publicly-traded securities which are reported in other investments.  These investments include mutual funds and other small holdings.  The $19 million fair value of these investments at both June 30, 2014 and December 31, 2013 was disclosed in Level 1.  At June 30, 2014 and December 31, 2013, the Company held investments in non-public common and preferred equity securities, with fair value estimates of $36 million and $34 million, respectively, reported in other investments, where the fair value estimate is determined either internally or by an external fund manager based on recent filings, operating results, balance sheet stability, growth and other business and market sector fundamentals.  Due to the significant unobservable inputs in these valuations, the Company includes the total fair value estimate for all of these investments at June 30, 2014 and December 31, 2013 in the amount disclosed in Level 3.
	Derivatives
	At June 30, 2014 and December 31, 2013, the Company held $9 million and $8 million, respectively, of convertible bonds containing embedded conversion options that are valued separately from the host bond contract in the amount disclosed in Level 2 — fixed maturities.
	Fair Value Hierarchy
	The following tables present the level within the fair value hierarchy at which the Company’s financial assets and financial liabilities are measured on a recurring basis at June 30, 2014 and December 31, 2013.  An investment transferred between levels during a period is transferred at its fair value as of the beginning of that period.
	(at June 30, 2014, in millions)	Total			Level 1			Level 2			Level 3
	Invested assets:
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,094		$	2,077		$	17		$	—
	Obligations of states, municipalities and political subdivisions	35,025			—			35,012			13
	Debt securities issued by foreign governments	2,582			—			2,582			—
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,326			—			2,275			51
	All other corporate bonds	22,415			21			22,203			191
	Redeemable preferred stock	141			—			132			9
	Total fixed maturities	64,583			2,098			62,221			264
	Equity securities
	Common stock	699			699			—			—
	Non-redeemable preferred stock	281			123			158			—
	Total equity securities	980			822			158			—
	Other investments	55			19			—			36
	Total	$	65,618		$	2,939		$	62,379		$	300
	During the six months ended June 30, 2014, the Company had transfers of $1 million of obligations of states, municipalities and political subdivisions and $4 million of non-redeemable preferred stock from Level 1 to Level 2.  In addition, the Company had transfers of $10 million of non-redeemable preferred stock from Level 2 to Level 1.
	(at December 31, 2013, in millions)	Total			Level 1			Level 2			Level 3
	Invested assets:
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,315		$	2,298		$	17		$	—
	Obligations of states, municipalities and political subdivisions	35,562			1			35,538			23
	Debt securities issued by foreign governments	2,577			—			2,577			—
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,424			—			2,415			9
	All other corporate bonds	20,940			—			20,726			214
	Redeemable preferred stock	138			—			129			9
	Total fixed maturities	63,956			2,299			61,402			255
	Equity securities
	Common stock	610			610			—			—
	Non-redeemable preferred stock	333			138			195			—
	Total equity securities	943			748			195			—
	Other investments	53			19			—			34
	Total	$	64,952		$	3,066		$	61,597		$	289
	During the year ended December 31, 2013, the Company had transfers of $31 million of redeemable preferred stock and $54 million of non-redeemable preferred stock from Level 1 to Level 2.
	The following tables present the changes in the Level 3 fair value category during the three months and six months ended June 30, 2014 and the twelve months ended December 31, 2013.
	Three Months Ended June 30, 2014 (in millions)	Fixed			Other			Total
		Maturities			Investments
	Balance at March 31, 2014	$	267		$	37		$	304
	Total realized and unrealized investment gains (losses):
	Reported in net realized investment gains (1)	1			—			1
Reported in increases (decreases) in other comprehensive income	2			(1		)	1
Purchases, sales and settlements/maturities:
Purchases	58			—			58
Sales	(1		)	—			(1		)
Settlements/maturities	(31		)	—			(31		)
Gross transfers into Level 3	—			—			—
Gross transfers out of Level 3	(32		)	—			(32		)
Balance at June 30, 2014	$	264		$	36		$	300
Amount of total realized investment gains (losses) for the period included in the consolidated statement of income attributable to changes in the fair value of assets still held at the reporting date	$	—		$	—		$	—
(1)         Includes impairments on investments held at the end of the period as well as amortization on fixed maturities.
Six Months Ended June 30, 2014 (in millions)	Fixed			Other			Total
	Maturities			Investments
Balance at December 31, 2013	$	255		$	34		$	289
Total realized and unrealized investment gains (losses):
Reported in net realized investment gains (1)	2			1			3
Reported in increases (decreases) in other comprehensive income	—			—			—
Purchases, sales and settlements/maturities:
Purchases	142			1			143
Sales	(1		)	—			(1		)
Settlements/maturities	(60		)	—			(60		)
Gross transfers into Level 3	—			—			—
Gross transfers out of Level 3	(74		)	—			(74		)
Balance at June 30, 2014	$	264		$	36		$	300
Amount of total realized investment gains (losses) for the period included in the consolidated statement of income attributable to changes in the fair value of assets still held at the reporting date	$	—		$	—		$	—
(1)     Includes impairments on investments held at the end of the period as well as amortization on fixed maturities.
Twelve Months Ended December 31, 2013 (in millions)	Fixed			Other			Total
	Maturities			Investments
Balance at December 31, 2012	$	230		$	54		$	284
Total realized and unrealized investment gains (losses):
Reported in net realized investment gains (1)	4			12			16
Reported in increases (decreases) in other comprehensive income	(2		)	1			(1		)
Purchases, sales and settlements/maturities:
Purchases	180			—			180
Sales	(25		)	(33		)	(58		)
Settlements/maturities	(83		)	—			(83		)
Gross transfers into Level 3	15			—			15
Gross transfers out of Level 3	(64		)	—			(64		)
Balance at December 31, 2013	$	255		$	34		$	289
Amount of total realized investment gains (losses) for the period included in the consolidated statement of income attributable to changes in the fair value of assets still held at the reporting date	$	—		$	—		$	—
(1)           Includes impairments on investments held at the end of the period as well as amortization on fixed maturities.
Financial Instruments Disclosed, But Not Carried, At Fair Value
The Company uses various financial instruments in the normal course of its business. The Company’s insurance contracts are excluded from fair value of financial instruments accounting guidance and, therefore, are not included in the amounts discussed below.  The following tables present the carrying value and fair value of the Company’s financial assets and financial liabilities disclosed, but not carried, at fair value at June 30, 2014 and December 31, 2013, and the level within the fair value hierarchy at which such assets and liabilities are measured on a recurring basis.
(at June 30, 2014, in millions)	Carrying			Fair			Level 1			Level 2		Level 3
	Value			Value
Financial assets:
Short-term securities	$	3,818		$	3,818		$	1,290		$	2,477	$	51
Financial liabilities:
Debt	$	6,247		$	7,452		$	—		$	7,452	$	—
Commercial paper	$	100		$	100		$	—		$	100	$	—
(at December 31, 2013, in millions)	Carrying			Fair			Level 1			Level 2		Level 3
	Value			Value
Financial assets:
Short-term securities	$	3,882		$	3,882		$	1,608		$	2,215	$	59
Financial liabilities:
Debt	$	6,246		$	7,123		$	—		$	7,123	$	—
Commercial paper	$	100		$	100		$	—		$	100	$	—
The Company utilized a pricing service to estimate fair value for approximately 97% of short-term securities at both June 30, 2014 and December 31, 2013.  A description of the process and inputs used by the pricing service to estimate fair value is discussed in the “Fixed Maturities” section above.  Estimates of fair value for U.S. Treasury securities and money market funds are based on market quotations received from the pricing service and are disclosed in Level 1 of the hierarchy.  The fair value of other short-term fixed maturity securities is estimated by the pricing service using observable market inputs and is disclosed in Level 2 of the hierarchy.  For short-term securities where an estimate is not obtained from the pricing service, the carrying value approximates fair value and is included in Level 3 of the hierarchy.
The Company utilized a pricing service to estimate fair value for 100% of its debt, including commercial paper, at both June 30, 2014 and December 31, 2013.  The pricing service utilizes market quotations for debt that have quoted prices in active markets.  Since fixed maturities other than U.S. Treasury securities generally do not trade on a daily basis, the fair value estimates are based on market observable inputs and disclosed in Level 2 of the hierarchy.
The Company had no material assets or liabilities that were measured at fair value on a non-recurring basis during the six months ended June 30, 2014 or twelve months ended December 31, 2013.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2014
Goodwill and Other Intangible Assets disclosure	'
Goodwill and Other Intangible Assets disclosure [Text Block]	'
	5.                   GOODWILL AND OTHER INTANGIBLE ASSETS
	Goodwill
	The following table presents the carrying amount of the Company’s goodwill by segment at June 30, 2014 and December 31, 2013:
	(in millions)	June 30,		December 31,
		2014		2013
	Business Insurance	$	2,168	$	2,168
	Financial, Professional & International Insurance (1)	826		826
	Personal Insurance	613		613
	Other	27		27
	Total	$	3,634	$	3,634
	(1)           Includes goodwill associated with the Company’s acquisition of Dominion in 2013, which is subject to the impact of changes   in foreign currency exchange rates.
	Other Intangible Assets
	The following presents a summary of the Company’s other intangible assets by major asset class at June 30, 2014 and December 31, 2013:
	(at June 30, 2014, in millions)	Gross		Accumulated		Net
		Carrying		Amortization
		Amount
	Intangibles subject to amortization
	Customer-related	$	460	$	429	$	31
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles (1)	201		121		80
	Total intangible assets subject to amortization	661		550		111
	Intangible assets not subject to amortization	217		—		217
	Total other intangible assets	$	878	$	550	$	328
	(at December 31, 2013, in millions)	Gross		Accumulated		Net
		Carrying		Amortization
		Amount
	Intangibles subject to amortization
	Customer-related	$	460	$	414	$	46
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles (1)	201		113		88
	Total intangible assets subject to amortization	661		527		134
	Intangible assets not subject to amortization	217		—		217
	Total other intangible assets	$	878	$	527	$	351
	(1)           The time value of money and the risk margin (cost of capital) components of the intangible asset run off at different rates, and,   as such, the amount recognized in income may be a net benefit in some periods and a net expense in other periods.
	The following presents a summary of the Company’s amortization expense for other intangible assets by major asset class:
		Three Months Ended				Six Months Ended
		June 30,				June 30,
	(in millions)	2014		2013		2014		2013
	Customer-related	$	7	$	8	$	15	$	15
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles	4		4		8		8
	Total amortization expense	$	11	$	12	$	23	$	23
	Intangible asset amortization expense is estimated to be $24 million for the remainder of 2014, $27 million in 2015, $10 million in 2016, $9 million in 2017, and $8 million in 2018.

Other_Comprehensive_Income_and

Other Comprehensive Income and Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2014
Other Comprehensive Income and Accumulated Other Comprehensive Income disclosure	'
Other Comprehensive Income and Accumulated Other Comprehensive Income disclosure [Text Block]	'
	6.                                      OTHER COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME
	The following table presents the changes in the Company’s accumulated other comprehensive income (AOCI) for the six months ended June 30, 2014.
	(in millions)	Changes in Net			Changes in Net			Net Benefit Plan			Net Unrealized			Total Accumulated
		Unrealized Gains on			Unrealized Gains on			Assets and			Foreign Currency			Other
		Investment			Investment Securities			Obligations			Translation			Comprehensive
		Securities Having No			Having Credit Losses			Recognized in						Income
		Credit Losses			Recognized in the			Shareholders’ Equity
		Recognized in the			Consolidated
		Consolidated			Statement of Income
		Statement of Income
	Balance, December 31, 2013	$	1,125		$	197		$	(431	)	$	(81	)	$	810
	Other comprehensive income (OCI) before reclassifications	708			—			—			43			751
	Amounts reclassified from AOCI	(19		)	2			18			—			1
	Net OCI, current period	689			2			18			43			752
	Balance, June 30, 2014	$	1,814		$	199		$	(413	)	$	(38	)	$	1,562
	The following tables present the pretax components of the Company’s other comprehensive income (loss) and the related income tax expense (benefit) for the three months and six months ended June 30, 2014 and 2013.
	(for the three months ended June 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	518		$	(1,790	)
	Income tax expense (benefit)	180			(621		)
	Net of taxes	338			(1,169		)
	Having credit losses recognized in the consolidated statement of income	1			(5		)
	Income tax expense (benefit)	—			(2		)
	Net of taxes	1			(3		)
	Net changes in benefit plan assets and obligations	15			26
	Income tax expense	5			9
	Net of taxes	10			17
	Net changes in unrealized foreign currency translation	97			(73		)
	Income tax expense (benefit)	11			(22		)
	Net of taxes	86			(51		)
	Total other comprehensive income (loss)	631			(1,842		)
	Total income tax expense (benefit)	196			(636		)
	Total other comprehensive income (loss), net of taxes	$	435		$	(1,206	)
	(for the six months ended June 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	1,055		$	(2,166	)
	Income tax expense (benefit)	366			(752		)
	Net of taxes	689			(1,414		)
	Having credit losses recognized in the consolidated statement of income	3			4
	Income tax expense	1			1
	Net of taxes	2			3
	Net changes in benefit plan assets and obligations	30			54
	Income tax expense	12			19
	Net of taxes	18			35
	Net changes in unrealized foreign currency translation	54			(169		)
	Income tax expense (benefit)	11			(29		)
	Net of taxes	43			(140		)
	Total other comprehensive income (loss)	1,142			(2,277		)
	Total income tax expense (benefit)	390			(761		)
	Total other comprehensive income (loss), net of taxes	$	752		$	(1,516	)
	The following tables present the pretax and related income tax expense (benefit) components of the amounts reclassified from the Company’s AOCI to the Company’s consolidated statement of income for the three months and six months ended June 30, 2014 and 2013.
	(for the three months ended June 30, in millions)	2014			2013
	Reclassification adjustments related to unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income (1)	$	(24	)	$	(34	)
	Income tax expense (2)	(8		)	(12		)
	Net of taxes	(16		)	(22		)
	Having credit losses recognized in the consolidated statement of income (1)	1			1
	Income tax benefit (2)	1			1
	Net of taxes	—			—
	Reclassification adjustment related to benefit plan assets and obligations (3)	15			25
	Income tax benefit (2)	5			8
	Net of taxes	10			17
	Reclassification adjustment related to foreign currency translation (1)	—			—
Income tax benefit (2)	—			—
Net of taxes	—			—
Total reclassifications	(8		)	(8		)
Total income tax (expense) benefit	(2		)	(3		)
Total reclassifications, net of taxes	$	(6	)	$	(5	)
(1)     (Increases) decreases net realized investment gains on the consolidated statement of income.
(2)     (Increases) decreases income tax expense on the consolidated statement of income.
(3)     Increases (decreases) general and administrative expenses on the consolidated statement of income.
(for the six months ended June 30, in millions)	2014			2013
Reclassification adjustments related to unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income (1)	$	(29	)	$	(51	)
Income tax expense (2)	(10		)	(18		)
Net of taxes	(19		)	(33		)
Having credit losses recognized in the consolidated statement of income (1)	4			2
Income tax benefit (2)	2			1
Net of taxes	2			1
Reclassification adjustment related to benefit plan assets and obligations (3)	30			52
Income tax benefit (2)	12			18
Net of taxes	18			34
Reclassification adjustment related to foreign currency translation (1)	—			(3		)
Income tax benefit (2)	—			—
Net of taxes	—			(3		)
Total reclassifications	5			—
Total income tax benefit	4			1
Total reclassifications, net of taxes	$	1		$	(1	)
(1)     (Increases) decreases net realized investment gains on the consolidated statement of income.
(2)     (Increases) decreases income tax expense on the consolidated statement of income.
(3)     Increases (decreases) general and administrative expenses on the consolidated statement of income.

Common_Share_Repurchases

Common Share Repurchases	6 Months Ended
	Jun. 30, 2014
Common Share Repurchases disclosure	'
Common Share Repurchases disclosure [Text Block]	'
	7.                          COMMON SHARE REPURCHASES
	During the three months and six months ended June 30, 2014, the Company repurchased 9.5 million and 17.3 million shares, respectively, under its share repurchase authorization, for a total cost of $875 million and $1.53 billion, respectively.  The average cost per share repurchased was $92.67 and $88.27, respectively.  At June 30, 2014, the Company had $3.23 billion of capacity remaining under the share repurchase authorization.

Earnings_per_Share

Earnings per Share	6 Months Ended
	Jun. 30, 2014
Earnings per Share disclosure	'
Earnings per Share disclosure [Text Block]	'
	8.                       EARNINGS PER SHARE
	The following is a reconciliation of the net income and share data used in the basic and diluted earnings per share computations for the periods presented:
		Three Months Ended						Six Months Ended
		June 30,						June 30,
	(in millions, except per share amounts)	2014			2013			2014			2013
	Basic and Diluted
	Net income, as reported	$	683		$	925		$	1,735		$	1,821
	Participating share-based awards — allocated income	(5		)	(7		)	(12		)	(14		)
	Net income available to common shareholders — basic and diluted	$	678		$	918		$	1,723		$	1,807
	Common Shares
	Basic
	Weighted average shares outstanding	343			375.9			346.9			376.8
	Diluted
	Weighted average shares outstanding	343			375.9			346.9			376.8
	Weighted average effects of dilutive securities — stock options and performance shares	3.7			4			3.6			4
	Total	346.7			379.9			350.5			380.8
	Net Income per Common Share
	Basic	$	1.98		$	2.44		$	4.97		$	4.8
	Diluted	$	1.95		$	2.41		$	4.91		$	4.75

ShareBased_Incentive_Compensat

Share-Based Incentive Compensation	6 Months Ended
	Jun. 30, 2014
Share-Based Incentive Compensation disclosure	'
Share-Based Incentive Compensation disclosure [Text Block]	'
	9.                                      SHARE-BASED INCENTIVE COMPENSATION
	The following information relates to fully vested stock option awards at June 30, 2014:
	Stock Options	Number	Weighted		Weighted	Aggregate
			Average		Average	Intrinsic
			Exercise		Contractual	Value
			Price		Life	($ in millions)
					Remaining
	Vested at end of period (1)	7,967,953	$	58.07	6.1 years	$	287
	Exercisable at end of period	5,137,812	$	50.32	4.7 years	$	225
	(1)     Represents awards for which the requisite service has been rendered, including those that are retirement eligible.
	The total compensation cost for all share-based incentive compensation awards recognized in earnings was $31 million and $29 million for the three months ended June 30, 2014 and 2013, respectively, and $75 million and $70 million for the six months ended June 30, 2014 and 2013, respectively.  The related tax benefits recognized in the consolidated statement of income were $11 million and $10 million for the three months ended June 30, 2014 and 2013, respectively, and $26 million and $24 million for the six months ended June 30, 2014 and 2013, respectively.
	The total unrecognized compensation cost related to all nonvested share-based incentive compensation awards at June 30, 2014 was $180 million, which is expected to be recognized over a weighted-average period of 2.0 years. The total unrecognized compensation cost related to all nonvested share-based incentive compensation awards at December 31, 2013 was $120 million, which was expected to be recognized over a weighted-average period of 1.7 years.
	In February 2014, the Company’s board of directors approved The Travelers Companies, Inc. 2014 Stock Incentive Plan (2014 Incentive Plan) to replace, effective with shareholder approval, the Amended and Restated 2004 Stock Incentive Plan (2004 Incentive Plan), which was scheduled to expire in July 2014.  At the Company’s 2014 Annual Meeting of Shareholders on May 27, 2014, the shareholders approved the 2014 Incentive Plan.  Accordingly, the 2014 Incentive Plan became effective on that date and no further awards will be made under the 2004 Incentive Plan.  The 2014 Incentive Plan has substantially the same terms, other than the number of shares available, as the 2004 Incentive Plan and is effective through February 5, 2024.  The number of shares initially available for issuance under the 2014 Incentive Plan was 10,000,000 shares of common stock.  Shares of common stock subject to an award granted under the 2014 Incentive Plan or the prior 2004 Incentive Plan that expire unexercised, are forfeited, terminated or canceled and that do not result in the issuance of common stock, will be available for grant under the 2014 Incentive Plan.

Pension_Plans_Retirement_Benef

Pension Plans, Retirement Benefits and Savings Plans	6 Months Ended
	Jun. 30, 2014
Pension Plans, Retirement Benefits and Savings Plans disclosure	'
Pension Plans, Retirement Benefits and Savings Plans disclosure [Text Block]	'
	10.                PENSION PLANS, RETIREMENT BENEFITS AND SAVINGS PLANS
	The following tables summarize the components of net periodic benefit cost for the Company’s pension and postretirement benefit plans recognized in the consolidated statement of income.
		Pension Plans						Postretirement Benefit Plans
	(for the three months ended June 30, in millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	28		$	30		$	—		$	—
	Interest cost on benefit obligation	37			33			3			2
	Expected return on plan assets	(55		)	(52		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			—			(1		)
	Net actuarial (gain) loss	16			26			(1		)	—
	Net periodic benefit cost	$	26		$	37		$	2		$	1
		Pension Plans						Postretirement Benefit Plans
	(for the six months ended June 30, in millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	55		$	59		$	—		$	—
	Interest cost on benefit obligation	75			66			5			4
	Expected return on plan assets	(109		)	(104		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			(1		)	(1		)
	Net actuarial (gain) loss	32			53			(1		)	—
	Net periodic benefit cost	$	53		$	74		$	3		$	3

Contingencies_Commitments_and_

Contingencies, Commitments and Guarantees	6 Months Ended
	Jun. 30, 2014
Contingencies, Commitments and Guarantees disclosure	'
Contingencies, Commitments and Guarantees disclosure [Text Block]	'
	11.                               CONTINGENCIES, COMMITMENTS AND GUARANTEES
	Contingencies
	The major pending legal proceedings, other than ordinary routine litigation incidental to the business, to which the Company or any of its subsidiaries is a party or to which any of the Company’s properties is subject are described below.
	Asbestos- and Environmental-Related Proceedings
	In the ordinary course of its insurance business, the Company has received and continues to receive claims for insurance arising under policies issued by the Company asserting alleged injuries and damages from asbestos- and environmental-related exposures that are the subject of related coverage litigation, including, among others, the litigation described below.  The Company is defending asbestos- and environmental-related litigation vigorously and believes that it has meritorious defenses; however, the outcomes of these disputes are uncertain.  In this regard, the Company employs dedicated specialists and aggressive resolution strategies to manage asbestos and environmental loss exposure, including settling litigation under appropriate circumstances.
	Asbestos Direct Action Litigation — In October 2001 and April 2002, two purported class action suits (Wise v. Travelers and Meninger v. Travelers) were filed against Travelers Property Casualty Corp. (TPC), a wholly-owned subsidiary of the Company, and other insurers (not including The St. Paul Companies, Inc. (SPC), which was acquired by TPC in 2004) in state court in West Virginia.  These and other cases subsequently filed in West Virginia were consolidated into a single proceeding in the Circuit Court of Kanawha County, West Virginia. The plaintiffs allege that the insurer defendants engaged in unfair trade practices in violation of state statutes by inappropriately handling and settling asbestos claims. The plaintiffs seek to reopen large numbers of settled asbestos claims and to impose liability for damages, including punitive damages, directly on insurers.  Similar lawsuits alleging inappropriate handling and settling of asbestos claims were filed in Massachusetts and Hawaii state courts.  These suits are collectively referred to as the Statutory and Hawaii Actions.
	In March 2002, the plaintiffs in consolidated asbestos actions pending before a mass tort panel of judges in West Virginia state court amended their complaint to include TPC as a defendant, alleging that TPC and other insurers breached alleged duties to certain users of asbestos products.  The plaintiffs seek damages, including punitive damages. Lawsuits seeking similar relief and raising similar allegations, primarily violations of purported common law duties to third parties, have also been asserted in various state courts against TPC and SPC. The claims asserted in these suits are collectively referred to as the Common Law Claims.
	In response to these claims, TPC moved to enjoin the Statutory Actions and the Common Law Claims in the federal bankruptcy court that had presided over the bankruptcy of TPC’s former policyholder Johns-Manville Corporation on the ground that the suits violated injunctions entered in connection with confirmation of the Johns-Manville bankruptcy (the “1986 Orders”).  The bankruptcy court issued a temporary restraining order and referred the parties to mediation.  In November 2003, the parties reached a settlement of the Statutory and Hawaii Actions, which included a lump-sum payment of up to $412 million by TPC, subject to a number of significant contingencies. In May 2004, the parties reached a settlement resolving substantially all pending and similar future Common Law Claims against TPC, which included a payment of up to $90 million by TPC, subject to similar contingencies.  Among the contingencies for each of these settlements was that the bankruptcy court issue an order, which must become a final order, clarifying that all of these claims, and similar future asbestos-related claims against TPC, as well as related contribution claims, are barred by the 1986 Orders.
	On August 17, 2004, the bankruptcy court entered an order approving the settlements and clarifying that the 1986 Orders barred the pending Statutory and Hawaii Actions and substantially all Common Law Claims pending against TPC (the “Clarifying Order”). The Clarifying Order also applies to similar direct action claims that may be filed in the future.  Although the District Court substantially affirmed the Clarifying Order, on February 15, 2008, the Second Circuit issued an opinion vacating on jurisdictional grounds the District Court’s approval of the Clarifying Order.
	On December 12, 2008, the United States Supreme Court granted TPC’s Petition for Writ of Certiorari and, on June 18, 2009, the Supreme Court reversed the Second Circuit’s February 15, 2008 decision, finding, among other things, that the 1986 Orders are final and therefore may not be collaterally challenged on jurisdictional grounds.  The Supreme Court further ruled that the bankruptcy court had jurisdiction to issue the Clarifying Order.  However, since the Second Circuit had not ruled on certain additional issues, principally related to procedural matters and the adequacy of notice provided to certain parties, the Supreme Court remanded the case to the Second Circuit for further proceedings on those specific issues.
	On March 22, 2010, the Second Circuit issued an opinion in which it found that the notice of the 1986 Orders provided to one remaining objector was insufficient to bar contribution claims by that objector against TPC. TPC’s Petition for Rehearing and Rehearing En Banc was denied May 25, 2010 and its Petition for Writ of Certiorari and Petition for a Writ of Mandamus were denied by the United States Supreme Court on November 29, 2010.
	The plaintiffs in the Statutory and Hawaii actions and the Common Law Claims actions thereafter filed motions in the bankruptcy court to compel TPC to make payment under the settlement agreements, arguing that all conditions precedent to the settlements had been met.  On December 16, 2010, the bankruptcy court granted the plaintiffs’ motions and ruled that TPC was required to fund the settlements.  The court entered judgment against TPC on January 20, 2011 in accordance with this ruling and ordered TPC to pay the settlement amounts plus prejudgment interest.  The bankruptcy court’s judgment was reversed by the district court on March 1, 2012, the district court having found that the conditions to the settlements had not been met in view of the Second Circuit’s March 22, 2010 ruling permitting the filing of contribution claims against TPC.  The plaintiffs appealed the district court’s March 1, 2012 decision to the Second Circuit Court of Appeals.  Oral argument before the Second Circuit took place on January 10, 2013, and the parties await the court’s decision.
	SPC, which is not covered by the Manville bankruptcy court rulings or the settlements described above, from time to time has been named as a defendant in direct action cases in Texas state court asserting common law claims.  All such cases that are still pending and in which SPC has been served are currently on the inactive docket in Texas state court.  If any of those cases becomes active, SPC intends to litigate those cases vigorously.  SPC was previously a defendant in similar direct actions in Ohio state court, which have been dismissed following favorable rulings by Ohio trial and appellate courts.  From time to time, SPC and/or its subsidiaries have been named in similar individual direct actions in other jurisdictions.
	Outcome and Impact of Asbestos and Environmental Claims and Litigation.  Currently, it is not possible to predict legal outcomes and their impact on the future development of claims and litigation relating to asbestos and environmental claims. Any such development will be affected by future court decisions and interpretations, as well as changes in applicable legislation. Because of these uncertainties, additional liabilities may arise for amounts in excess of the Company’s current reserves. In addition, the Company’s estimate of ultimate claims and claim adjustment expenses may change. These additional liabilities or increases in estimates, or a range of either, cannot now be reasonably estimated and could result in income statement charges that could be material to the Company’s results of operations in future periods.
	Other Proceedings Not Arising Under Insurance Contracts or Reinsurance Agreements
	The Company is involved in other lawsuits, including lawsuits alleging extra-contractual damages relating to insurance contracts or reinsurance agreements, that do not arise under insurance contracts or reinsurance agreements.  Based upon currently available information, the Company does not believe it is reasonably possible that any such lawsuit or related lawsuits would be material to the Company’s results of operations or would have a material adverse effect on the Company’s financial position or liquidity.
	Gain Contingency
	On August 17, 2010, in a reinsurance dispute in New York state court captioned United States Fidelity & Guaranty Company v. American Re-Insurance Company, et al., the trial court granted summary judgment for United States Fidelity and Guaranty Company (USF&G), a subsidiary of the Company, and denied summary judgment for American Re-Insurance Company, a subsidiary of Munich Re (American Re), and three other reinsurers.  By order dated October 22, 2010, the trial court corrected certain clerical errors and made certain clarifications to the August 17, 2010 order.  On October 25, 2010, judgment was entered against American Re and the other three insurers, awarding USF&G $420 million, comprising $251 million ceded under the terms of the disputed reinsurance contract plus interest of 9% amounting to $169 million as of that date.  The judgment, including the award of interest, was appealed by the reinsurers to the New York Supreme Court, Appellate Division, First Department.  On January 24, 2012, the Appellate Division affirmed the judgment.  On January 30, 2012, the reinsurers filed a motion with the Appellate Division seeking permission to appeal its decision to the New York Court of Appeals, and on March 12, 2012, the Appellate Division granted the reinsurers’ motion.  On February 7, 2013, the Court of Appeals issued an opinion that largely affirmed the summary judgment in USF&G’s favor, while modifying in part the summary judgment with respect to two discrete issues and remanding the case to the trial court for determination of those issues.  The Company believes it has a meritorious position on each of these issues and intends to pursue its claim vigorously.  On May 2, 2013, the Court of Appeals denied a motion by reinsurers to reconsider the February 7, 2013 opinion.  In November 2013, the Company entered into a settlement agreement with one of the reinsurers.  At June 30, 2014, the claim totaled $477 million, comprising the $238 million of reinsurance recoverable plus interest amounting to $239 million as of that date.  Interest will continue to accrue at 9% until the claim is paid. The $238 million of reinsurance recoverable owed to USF&G under the terms of the disputed reinsurance contract has been reported as part of reinsurance recoverables in the Company’s consolidated balance sheet.  The interest that would be owed as part of any judgment ultimately entered in favor of USF&G is treated for accounting purposes as a gain contingency in accordance with FASB Topic 450, Contingencies, and accordingly has not been recognized in the Company’s consolidated financial statements.
	Other Commitments and Guarantees
	Commitments
	Investment Commitments — The Company has unfunded commitments to private equity limited partnerships and real estate partnerships in which it invests.  These commitments totaled $1.59 billion and $1.52 billion at June 30, 2014 and December 31, 2013, respectively.
	Guarantees
	In the ordinary course of selling businesses to third parties, the Company has agreed to indemnify purchasers for losses arising out of breaches of representations and warranties with respect to the businesses being sold, covenants and obligations of the Company and/or its subsidiaries following the closing, and in certain cases obligations arising from undisclosed liabilities, adverse reserve development and imposition of additional taxes due to either a change in the tax law or an adverse interpretation of the tax law.  Such indemnification provisions generally are applicable from the closing date to the expiration of the relevant statutes of limitations, although, in some cases, there may be agreed upon term limitations or no term limitations.  Certain of these contingent obligations are subject to deductibles which have to be incurred by the obligee before the Company is obligated to make payments.  The maximum amount of the Company’s contingent obligation for indemnifications related to the sale of businesses that are quantifiable was $467 million at June 30, 2014, of which $9 million was recognized on the balance sheet at that date.
	The Company also has contingent obligations for guarantees related to certain investments, third-party loans related to certain investments, certain insurance policy obligations of former insurance subsidiaries, and various other indemnifications.  The Company also provides standard indemnifications to service providers in the normal course of business.  The indemnification clauses are often standard contractual terms.  Certain of these guarantees and indemnifications have no stated or notional amounts or limitation to the maximum potential future payments, and, accordingly, the Company is unable to develop an estimate of the maximum potential payments for such arrangements.  The maximum amount of the Company’s obligation for guarantees of certain investments and third-party loans related to certain investments that are quantifiable was $150 million at June 30, 2014, approximately $75 million of which is indemnified by a third party.  The maximum amount of the Company’s obligation related to the guarantee of certain insurance policy obligations of a former insurance subsidiary was $480 million at June 30, 2014, all of which is indemnified by a third party.

Consolidating_Financial_Statem

Consolidating Financial Statements (Unaudited)	6 Months Ended
	Jun. 30, 2014
Consolidating Financial Statements of The Travelers Companies, Inc. and Subsidiaries (Unaudited) disclosure	'
Consolidating Financial Statements of The Travelers Companies, Inc. and Subsidiaries (Unaudited) disclosure [Text Block]	'
	12.                                 CONSOLIDATING FINANCIAL STATEMENTS OF THE TRAVELERS COMPANIES, INC. AND SUBSIDIARIES
	The following consolidating financial statements of the Company have been prepared pursuant to Rule 3-10 of Regulation S-X. These consolidating financial statements have been prepared from the Company’s financial information on the same basis of accounting as the consolidated financial statements. The Travelers Companies, Inc. has fully and unconditionally guaranteed certain debt obligations of TPC, which totaled $700 million at June 30, 2014.
	Prior to the merger of TPC and SPC in 2004, TPC fully and unconditionally guaranteed the payment of all principal, premiums, if any, and interest on certain debt obligations of its wholly-owned subsidiary, Travelers Insurance Group Holdings, Inc. (TIGHI). Concurrent with the merger, The Travelers Companies, Inc. fully and unconditionally assumed such guarantee obligations of TPC. TPC is deemed to have no assets or operations independent of TIGHI.  Consolidating financial information for TIGHI has not been presented herein because such financial information would be substantially the same as the financial information provided for TPC.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the three months ended June 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	4,020		$	1,908		$	—		$	—		$	5,928
	Net investment income	472			221			2			—			695
	Fee income	111			1			—			—			112
	Net realized investment gains (1)	5			11			—			—			16
	Other revenues	32			2			—			—			34
	Total revenues	4,640			2,143			2			—			6,785
	Claims and expenses
	Claims and claim adjustment expenses	2,569			1,257			—			—			3,826
	Amortization of deferred acquisition costs	650			315			—			—			965
	General and administrative expenses	697			300			4			—			1,001
	Interest expense	12			—			80			—			92
	Total claims and expenses	3,928			1,872			84			—			5,884
	Income (loss) before income taxes	712			271			(82		)	—			901
	Income tax expense (benefit)	186			60			(28		)	—			218
	Net income of subsidiaries	—			—			737			(737		)	—
	Net income	$	526		$	211		$	683		$	(737	)	$	683
	(1)     Total other-than-temporary impairment (OTTI) for the three months ended June 30, 2014, and the amounts comprising total OTTI that were recognized in net realized investment gains and in other comprehensive income (OCI) were as follows:
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Total OTTI gains (losses)	$	(1	)	$	—		$	—		$	—		$	(1	)
	OTTI losses recognized in net realized investment gains	$	(1	)	$	—		$	—		$	—		$	(1	)
	OTTI gains recognized in OCI	$	—		$	—		$	—		$	—		$	—
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the three months ended June 30, 2013
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	3,804		$	1,799		$	—		$	—		$	5,603
	Net investment income	457			229			1			—			687
	Fee income	82			—			—			—			82
	Net realized investment gains (1)	124			43			—			—			167
	Other revenues	103			32			—			—			135
	Total revenues	4,570			2,103			1			—			6,674
	Claims and expenses
	Claims and claim adjustment expenses	2,339			1,191			—			—			3,530
	Amortization of deferred acquisition costs	635			315			—			—			950
	General and administrative expenses	639			289			3			—			931
	Interest expense	12			—			74			—			86
	Total claims and expenses	3,625			1,795			77			—			5,497
	Income (loss) before income taxes	945			308			(76		)	—			1,177
	Income tax expense (benefit)	203			77			(28		)	—			252
	Net income of subsidiaries	—			—			973			(973		)	—
	Net income	$	742		$	231		$	925		$	(973	)	$	925
	(1)     Total other-than-temporary impairment (OTTI) for the three months ended June 30, 2013, and the amounts comprising total OTTI that were recognized in net realized investment gains and in other comprehensive income (OCI) were as follows:
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Total OTTI gains (losses)	$	(1	)	$	—		$	—		$	—		$	(1	)
	OTTI losses recognized in net realized investment gains	$	(1	)	$	(1	)	$	—		$	—		$	(2	)
	OTTI gains recognized in OCI	$	—		$	1		$	—		$	—		$	1
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the six months ended June 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
Revenues
Premiums	$	7,964		$	3,787		$	—		$	—		$	11,751
Net investment income	972			456			3			—			1,431
Fee income	218			1			—			—			219
Net realized investment gains (1)	6			9			2			—			17
Other revenues	65			10			—			—			75
Total revenues	9,225			4,263			5			—			13,493
Claims and expenses
Claims and claim adjustment expenses	4,790			2,351			—			—			7,141
Amortization of deferred acquisition costs	1,285			630			—			—			1,915
General and administrative expenses	1,310			565			7			—			1,882
Interest expense	24			—			160			—			184
Total claims and expenses	7,409			3,546			167			—			11,122
Income (loss) before income taxes	1,816			717			(162		)	—			2,371
Income tax expense (benefit)	507			185			(56		)	—			636
Net income of subsidiaries	—			—			1,841			(1,841		)	—
Net income	$	1,309		$	532		$	1,735		$	(1,841	)	$	1,735
(1)     Total other-than-temporary impairment (OTTI) for the six months ended June 30, 2014, and the amounts comprising total OTTI that were recognized in net realized investment gains (losses) and in other comprehensive income (OCI) were as follows:
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Total OTTI gains	$	(3	)	$	(5	)	$	—		$	—		$	(8	)
OTTI losses recognized in net realized investment gains (losses)	$	(5	)	$	(5	)	$	—		$	—		$	(10	)
OTTI gains recognized in OCI	$	2		$	—		$	—		$	—		$	2
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF INCOME (Unaudited)
For the six months ended June 30, 2013
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Revenues
Premiums	$	7,545		$	3,575		$	—		$	—		$	11,120
Net investment income	912			442			3			—			1,357
Fee income	178			1			—			—			179
Net realized investment gains (1)	117			59			1			—			177
Other revenues	132			37			—			—			169
Total revenues	8,884			4,114			4			—			13,002
Claims and expenses
Claims and claim adjustment expenses	4,470			2,213			—			—			6,683
Amortization of deferred acquisition costs	1,272			626			—			—			1,898
General and administrative expenses	1,269			575			2			—			1,846
Interest expense	29			—			149			—			178
Total claims and expenses	7,040			3,414			151			—			10,605
Income (loss) before income taxes	1,844			700			(147		)	—			2,397
Income tax expense (benefit)	452			176			(52		)	—			576
Net income of subsidiaries	—			—			1,916			(1,916		)	—
Net income	$	1,392		$	524		$	1,821		$	(1,916	)	$	1,821
(1)     Total other-than-temporary impairment (OTTI) for the six months ended June 30, 2013, and the amounts comprising total OTTI that were recognized in net realized investment gains and in other comprehensive income (OCI) were as follows:
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Total OTTI gains (losses)	$	(4	)	$	3		$	—		$	—		$	(1	)
OTTI losses recognized in net realized investment gains	$	(5	)	$	(2	)	$	—		$	—		$	(7	)
OTTI gains recognized in OCI	$	1		$	5		$	—		$	—		$	6
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
For the three months ended June 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	526		$	211		$	683		$	(737	)	$	683
Other comprehensive income:
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	359			155			4			—			518
Having credit losses recognized in the consolidated statement of income	2			(1		)	—			—			1
Net changes in benefit plan assets and obligations	—			—			15			—			15
Net changes in unrealized foreign currency translation	51			46			—			—			97
Other comprehensive income before income taxes and other comprehensive income of subsidiaries	412			200			19			—			631
Income tax expense	129			61			6			—			196
Other comprehensive income net of taxes, before other comprehensive income of subsidiaries	283			139			13			—			435
Other comprehensive income of subsidiaries	—			—			422			(422		)	—
Other comprehensive income	283			139			435			(422		)	435
Comprehensive income	$	809		$	350		$	1,118		$	(1,159	)	$	1,118
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited)
For the three months ended June 30, 2013
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	742		$	231		$	925		$	(973	)	$	925
Other comprehensive income (loss):
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	(1,282		)	(509		)	1			—			(1,790		)
Having credit losses recognized in the consolidated statement of income	(2		)	(3		)	—			—			(5		)
Net changes in benefit plan assets and obligations	—			1			25			—			26
Net changes in unrealized foreign currency translation	(51		)	(22		)	—			—			(73		)
Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(1,335		)	(533		)	26			—			(1,842		)
Income tax expense (benefit)	(462		)	(183		)	9			—			(636		)
Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(873		)	(350		)	17			—			(1,206		)
Other comprehensive loss of subsidiaries	—			—			(1,223		)	1,223			—
Other comprehensive loss	(873		)	(350		)	(1,206		)	1,223			(1,206		)
Comprehensive loss	$	(131	)	$	(119	)	$	(281	)	$	250		$	(281	)
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
For the six months ended June 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	1,309		$	532		$	1,735		$	(1,841	)	$	1,735
Other comprehensive income:
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	750			301			4			—			1,055
Having credit losses recognized in the consolidated statement of income	9			(6		)	—			—			3
Net changes in benefit plan assets and obligations	—			—			30			—			30
Net changes in unrealized foreign currency translation	26			28			—			—			54
Other comprehensive income before income taxes and other comprehensive income of subsidiaries	785			323			34			—			1,142
Income tax expense	272			106			12			—			390
Other comprehensive income, net of taxes, before other comprehensive income of subsidiaries	513			217			22			—			752
Other comprehensive income of subsidiaries	—			—			730			(730		)	—
Other comprehensive income	513			217			752			(730		)	752
Comprehensive income	$	1,822		$	749		$	2,487		$	(2,571	)	$	2,487
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
For the six months ended June 30, 2013
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	1,392		$	524		$	1,821		$	(1,916	)	$	1,821
Other comprehensive income (loss):
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	(1,597		)	(576		)	7			—			(2,166		)
Having credit losses recognized in the consolidated statement of income	5			(1		)	—			—			4
Net changes in benefit plan assets and obligations	1			3			50			—			54
Net changes in unrealized foreign currency translation	(61		)	(108		)	—			—			(169		)
Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(1,652		)	(682		)	57			—			(2,277		)
Income tax expense (benefit)	(570		)	(211		)	20			—			(761		)
Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(1,082		)	(471		)	37			—			(1,516		)
Other comprehensive loss of subsidiaries	—			—			(1,553		)	1,553			—
Other comprehensive loss	(1,082		)	(471		)	(1,516		)	1,553			(1,516		)
Comprehensive income	$	310		$	53		$	305		$	(363	)	$	305
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING BALANCE SHEET (Unaudited)
At June 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Assets
Fixed maturities, available for sale, at fair value (amortized cost $61,841)	$	44,292		$	20,251		$	40		$	—		$	64,583
Equity securities, available for sale, at fair value (cost $648)	302			541			137			—			980
Real estate investments	55			899			—			—			954
Short-term securities	1,516			539			1,763			—			3,818
Other investments	2,607			998			1			—			3,606
Total investments	48,772			23,228			1,941			—			73,941
Cash	167			143			1			—			311
Investment income accrued	483			223			4			—			710
Premiums receivable	4,400			2,189			—			—			6,589
Reinsurance recoverables	6,250			3,258			—			—			9,508
Ceded unearned premiums	637			125			—			—			762
Deferred acquisition costs	1,621			258			—			—			1,879
Contractholder receivables	3,264			1,107			—			—			4,371
Goodwill	2,619			1,015			—			—			3,634
Other intangible assets	234			94			—			—			328
Investment in subsidiaries	—			—			29,105			(29,105		)	—
Other assets	2,180			90			508			—			2,778
Total assets	$	70,627		$	31,730		$	31,559		$	(29,105	)	$	104,811
Liabilities
Claims and claim adjustment expense reserves	$	33,569		$	17,287		$	—		$	—		$	50,856
Unearned premium reserves	8,301			3,788			—			—			12,089
Contractholder payables	3,264			1,107			—			—			4,371
Payables for reinsurance premiums	224			173			—			—			397
Deferred taxes	109			73			57			—			239
Debt	692			—			5,655			—			6,347
Other liabilities	3,899			753			328			—			4,980
Total liabilities	50,058			23,181			6,040			—			79,279
Shareholders’ equity
Common stock (1,750.0 shares authorized; 339.0 shares issued and outstanding)	—			390			21,694			(390		)	21,694
Additional paid-in capital	11,634			6,502			—			(18,136		)	—
Retained earnings	7,655			1,017			25,649			(8,659		)	25,662
Accumulated other comprehensive income	1,280			640			1,562			(1,920		)	1,562
Treasury stock, at cost (419.5 shares)	—			—			(23,386		)	—			(23,386		)
Total shareholders’ equity	20,569			8,549			25,519			(29,105		)	25,532
Total liabilities and shareholders’ equity	$	70,627		$	31,730		$	31,559		$	(29,105	)	$	104,811
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING BALANCE SHEET (Unaudited)
At December 31, 2013
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Assets
Fixed maturities, available for sale, at fair value (amortized cost $62,196)	$	43,720		$	20,199		$	37		$	—		$	63,956
Equity securities, available for sale, at fair value (cost $686)	329			484			130			—			943
Real estate investments	33			905			—			—			938
Short-term securities	1,867			492			1,523			—			3,882
Other investments	2,450			990			1			—			3,441
Total investments	48,399			23,070			1,691			—			73,160
Cash	137			154			3			—			294
Investment income accrued	499			231			4			—			734
Premiums receivable	4,124			2,001			—			—			6,125
Reinsurance recoverables	6,292			3,421			—			—			9,713
Ceded unearned premiums	712			89			—			—			801
Deferred acquisition costs	1,570			234			—			—			1,804
Deferred taxes	279			86			(62		)	—			303
Contractholder receivables	3,179			1,149			—			—			4,328
Goodwill	2,619			1,015			—			—			3,634
Other intangible assets	250			101			—			—			351
Investment in subsidiaries	—			—			28,616			(28,616		)	—
Other assets	2,010			357			198			—			2,565
Total assets	$	70,070		$	31,908		$	30,450		$	(28,616	)	$	103,812
Liabilities
Claims and claim adjustment expense reserves	$	33,506		$	17,389		$	—		$	—		$	50,895
Unearned premium reserves	8,188			3,662			—			—			11,850
Contractholder payables	3,179			1,149			—			—			4,328
Payables for reinsurance premiums	127			171			—			—			298
Debt	692			—			5,654			—			6,346
Other liabilities	4,109			1,180			10			—			5,299
Total liabilities	49,801			23,551			5,664			—			79,016
Shareholders’ equity
Common stock (1,750.0 shares authorized; 353.5 shares issued and outstanding)	—			390			21,500			(390		)	21,500
Additional paid-in capital	11,634			6,502			—			(18,136		)	—
Retained earnings	7,868			1,042			24,281			(8,900		)	24,291
Accumulated other comprehensive income	767			423			810			(1,190		)	810
Treasury stock, at cost (401.5 shares)	—			—			(21,805		)	—			(21,805		)
Total shareholders’ equity	20,269			8,357			24,786			(28,616		)	24,796
Total liabilities and shareholders’ equity	$	70,070		$	31,908		$	30,450		$	(28,616	)	$	103,812
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF CASH FLOWS (Unaudited)
For the six months ended June 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Cash flows from operating activities
Net income	$	1,309		$	532		$	1,735		$	(1,841	)	$	1,735
Net adjustments to reconcile net income to net cash provided by operating activities	(154		)	(317		)	305			(241		)	(407		)
Net cash provided by operating activities	1,155			215			2,040			(2,082		)	1,328
Cash flows from investing activities
Proceeds from maturities of fixed maturities	3,005			1,909			1			—			4,915
Proceeds from sales of investments:
Fixed maturities	415			369			1			—			785
Equity securities	57			34			4			—			95
Real estate investments	—			5			—			—			5
Other investments	196			142			—			—			338
Purchases of investments:
Fixed maturities	(3,399		)	(2,046		)	(4		)	—			(5,449		)
Equity securities	(3		)	(32		)	(5		)	—			(40		)
Real estate investments	(21		)	(15		)	—			—			(36		)
Other investments	(154		)	(72		)	—			—			(226		)
Net sales (purchases) of short-term securities	347			(47		)	(240		)	—			60
Securities transactions in course of settlement	113			91			—			—			204
Acquisitions, net of cash acquired	(9		)	(3		)	—			—			(12		)
Other	(147		)	(5		)	—			—			(152		)
Net cash provided by (used in) investing activities	400			330			(243		)	—			487
Cash flows from financing activities
Dividends paid to shareholders	—			—			(365		)	—			(365		)
Issuance of common stock — employee share options	—			—			122			—			122
Treasury stock acquired — share repurchase authorization	—			—			(1,525		)	—			(1,525		)
Treasury stock acquired — net employee share-based compensation	—			—			(55		)	—			(55		)
Excess tax benefits from share-based payment arrangements	—			—			24			—			24
Dividends paid to parent company	(1,525		)	(557		)	—			2,082			—
Net cash used in financing activities	(1,525		)	(557		)	(1,799		)	2,082			(1,799		)
Effect of exchange rate changes on cash	—			1			—			—			1
Net increase (decrease) in cash	30			(11		)	(2		)	—			17
Cash at beginning of year	137			154			3			—			294
Cash at end of period	$	167		$	143		$	1		$	—		$	311
Supplemental disclosure of cash flow information
Income taxes paid (received)	$	570		$	205		$	(48	)	$	—		$	727
Interest paid	$	24		$	—		$	159		$	—		$	183
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF CASH FLOWS (Unaudited)
For the six months ended June 30, 2013
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Cash flows from operating activities
Net income	$	1,392		$	524		$	1,821		$	(1,916	)	$	1,821
Net adjustments to reconcile net income to net cash provided by operating activities	(807		)	37			(1,148		)	1,349			(569		)
Net cash provided by operating activities	585			561			673			(567		)	1,252
Cash flows from investing activities
Proceeds from maturities of fixed maturities	2,570			1,330			1			—			3,901
Proceeds from sales of investments:
Fixed maturities	300			267			5			—			572
Equity securities	18			32			—			—			50
Other investments	224			157			—			—			381
Purchases of investments:
Fixed maturities	(3,062		)	(1,419		)	(7		)	—			(4,488		)
Equity securities	(15		)	(24		)	(1		)	—			(40		)
Real estate investments	—			(59		)	—			—			(59		)
Other investments	(150		)	(59		)	—			—			(209		)
Net sales (purchases) of short-term securities	(182		)	78			185			—			81
Securities transactions in course of settlement	59			1			—			—			60
Other	(155		)	(2		)	—			—			(157		)
Net cash provided by (used in) investing activities	(393		)	302			183			—			92
Cash flows from financing activities
Payment of debt	(500		)	—			—			—			(500		)
Dividends paid to shareholders	—			—			(366		)	—			(366		)
Issuance of common stock — employee share options	—			—			139			—			139
Treasury stock acquired — share repurchase authorization	—			—			(600		)	—			(600		)
Treasury stock acquired — net employee share-based compensation	—			—			(59		)	—			(59		)
Excess tax benefits from share-based payment arrangements	—			—			29			—			29
Capital contributions	500			—			—			(500		)	—
Dividends paid to parent company	(217		)	(850		)	—			1,067			—
Net cash used in financing activities	(217		)	(850		)	(857		)	567			(1,357		)
Effect of exchange rate changes on cash	—			(9		)	—			—			(9		)
Net increase (decrease) in cash	(25		)	4			(1		)	—			(22		)
Cash at beginning of year	177			151			2			—			330
Cash at end of period	$	152		$	155		$	1		$	—		$	308
Supplemental disclosure of cash flow information
Income taxes paid (received)	$	479		$	178		$	(162	)	$	—		$	495
Interest paid	$	36		$	—		$	148		$	—		$	184
(1)     The Travelers Companies, Inc., excluding its subsidiaries.

Basis_of_Presentation_and_Acco1

Basis of Presentation and Accounting Policies (policies)	6 Months Ended
	Jun. 30, 2014
Basis of Presentation and Accounting Policies disclosure	'
Accounting Policies, Basis of Presentation [Policy Text Block]	'
	Basis of Presentation
	The interim consolidated financial statements include the accounts of The Travelers Companies, Inc. (together with its subsidiaries, the Company). These financial statements are prepared in conformity with U.S. generally accepted accounting principles (GAAP) and are unaudited.  In the opinion of the Company’s management, all adjustments necessary for a fair presentation have been reflected.  Certain financial information that is normally included in annual financial statements prepared in accordance with GAAP, but that is not required for interim reporting purposes, has been omitted.  All material intercompany transactions and balances have been eliminated.  The accompanying interim consolidated financial statements and related notes should be read in conjunction with the Company’s consolidated financial statements and related notes included in the Company’s 2013 Annual Report on Form 10-K.
	The preparation of the interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the interim consolidated financial statements and the reported amounts of revenues and claims and expenses during the reporting period.  Actual results could differ from those estimates.
	On November 1, 2013, the Company acquired all of the issued and outstanding shares of The Dominion of Canada General Insurance Company (Dominion) for an aggregate purchase price of approximately $1.035 billion. Dominion primarily markets personal lines and small commercial insurance business in Canada. At the acquisition date, the Company recorded at fair value $3.91 billion of assets acquired and $2.88 billion of liabilities assumed as part of purchase accounting, including $16 million of identifiable intangible assets and $273 million of goodwill. The operating income and the amount of assets acquired from Dominion were included in the Company’s Financial, Professional & International Insurance segment effective at the acquisition date.
Accounting Policies, Adoption of Accounting Standards Updates [Policy Text Block]	'
	Adoption of Accounting Standards Updates
	Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date
	In February 2013, the Financial Accounting Standards Board (FASB) issued updated guidance to resolve diversity in practice concerning the recognition, measurement, and disclosure of obligations resulting from certain joint and several liability arrangements for which the total amount under the arrangement is fixed at the reporting date.  The guidance requires that the reporting entity measure joint and several liability arrangements as the amount the reporting entity agreed to pay on the basis of its arrangement among the co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors.  The updated guidance was effective for the quarter ending March 31, 2014. The adoption of this guidance did not have any effect on the Company’s results of operations, financial position or liquidity.
	Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity
	In March 2013, the FASB issued updated guidance to resolve diversity in practice concerning the release of the cumulative foreign currency translation adjustment into net income when a parent sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within a foreign entity.  When a company ceases to have a controlling financial interest in a subsidiary within a foreign entity, the company should recognize any related cumulative translation adjustment into net income only if the sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary had resided. Upon the partial sale of an equity method investment that is a foreign entity, the company should release into earnings a pro rata portion of the cumulative translation adjustment. Upon the partial sale of an equity method investment that is not a foreign entity, the company should release into earnings the cumulative translation adjustment if the partial sale represents a complete or substantially complete liquidation of the foreign entity that holds the equity method investment.  The updated guidance was effective for the quarter ending March 31, 2014.  The adoption of this guidance did not have any effect on the Company’s results of operations, financial position or liquidity.

Segment_Information_tables

Segment Information (tables)	6 Months Ended
	Jun. 30, 2014
Segment Information disclosure	'
Company's revenues and operating income by segment [Table Text Block]	'
	(for the three months	Business			Financial,			Personal			Total
	ended June 30,	Insurance			Professional &			Insurance			Reportable
	in millions)				International						Segments
					Insurance
	2014
	Premiums	$	3,067		$	1,088		$	1,773		$	5,928
	Net investment income	496			105			94			695
	Fee income	111			1			—			112
	Other revenues	8			8			17			33
	Total operating revenues (1)	$	3,682		$	1,202		$	1,884		$	6,768
	Operating income (1)	$	409		$	254		$	75		$	738
	2013
	Premiums	$	3,018		$	751		$	1,834		$	5,603
	Net investment income	502			91			94			687
	Fee income	82			—			—			82
	Other revenues	114			5			15			134
	Total operating revenues (1)	$	3,716		$	847		$	1,943		$	6,506
	Operating income (1)	$	579		$	154		$	142		$	875
	(1)     Operating revenues for reportable business segments exclude net realized investment gains (losses). Operating income for reportable business segments equals net income excluding the after-tax impact of net realized investment gains (losses).
	(for the six months	Business			Financial,			Personal			Total
	ended June 30,	Insurance			Professional &			Insurance			Reportable
	in millions)				International						Segments
					Insurance
	2014
	Premiums	$	6,083		$	2,133		$	3,535		$	11,751
	Net investment income	1,026			211			194			1,431
	Fee income	218			1			—			219
	Other revenues	16			16			43			75
	Total operating revenues (1)	$	7,343		$	2,361		$	3,772		$	13,476
	Operating income (1)	$	1,062		$	449		$	343		$	1,854
	2013
	Premiums	$	5,960		$	1,486		$	3,674		$	11,120
	Net investment income	989			183			185			1,357
	Fee income	179			—			—			179
	Other revenues	127			10			33			170
	Total operating revenues (1)	$	7,255		$	1,679		$	3,892		$	12,826
	Operating income (1)	$	1,169		$	317		$	339		$	1,825
	(1)     Operating revenues for reportable business segments exclude net realized investment gains (losses). Operating income for reportable business segments equals net income excluding the after-tax impact of net realized investment gains (losses).
Business segment reconciliations of revenue and income, net of tax [Table Text Block]	'
		Three Months Ended						Six Months Ended
		June 30,						June 30,
	(in millions)	2014			2013			2014			2013
	Revenue reconciliation
	Earned premiums
	Business Insurance:
	Workers’ compensation	$	923		$	897		$	1,831		$	1,744
	Commercial automobile	473			474			941			949
	Commercial property	440			418			868			827
	General liability	457			444			904			881
	Commercial multi-peril	763			776			1,518			1,541
	Other	11			9			21			18
	Total Business Insurance	3,067			3,018			6,083			5,960
	Financial, Professional & International Insurance:
	Fidelity and surety	238			228			460			448
	General liability	241			221			478			434
	International	564			258			1,106			516
	Other	45			44			89			88
	Total Financial, Professional & International Insurance	1,088			751			2,133			1,486
	Personal Insurance:
	Automobile	821			864			1,636			1,736
	Homeowners and other	952			970			1,899			1,938
	Total Personal Insurance	1,773			1,834			3,535			3,674
	Total earned premiums	5,928			5,603			11,751			11,120
	Net investment income	695			687			1,431			1,357
	Fee income	112			82			219			179
	Other revenues	33			134			75			170
	Total operating revenues for reportable segments	6,768			6,506			13,476			12,826
	Other revenues	1			1			—			(1		)
	Net realized investment gains	16			167			17			177
	Total consolidated revenues	$	6,785		$	6,674		$	13,493		$	13,002
	Income reconciliation, net of tax
	Total operating income for reportable segments	$	738		$	875		$	1,854		$	1,825
	Interest Expense and Other (1)	(65		)	(59		)	(129		)	(122		)
	Total operating income	673			816			1,725			1,703
	Net realized investment gains	10			109			10			118
	Total consolidated net income	$	683		$	925		$	1,735		$	1,821
	(1)     The primary component of Interest Expense and Other is after-tax interest expense of $60 million and $56 million in the three months ended June 30, 2014 and 2013, respectively, and $120 million and $116 million in the six months ended June 30, 2014 and 2013, respectively.
Asset reconciliation [Table Text Block]	'
	(in millions)	June 30,			December 31,
		2014			2013
	Asset reconciliation:
	Business Insurance	$	74,470		$	73,746
	Financial, Professional & International Insurance	16,856			16,691
	Personal Insurance	12,948			12,870
	Total assets for reportable segments	104,274			103,307
	Other assets (1)	537			505
	Total consolidated assets	$	104,811		$	103,812
	(1)     The primary components of other assets at both dates were other intangible assets and accrued over-funded benefit plan assets related to the Company’s qualified domestic pension plan

Investments_tables

Investments (tables)	6 Months Ended
	Jun. 30, 2014
Investments disclosure	'
Amortized cost and fair value of investments in fixed maturities [Table Text Block]	'
		Amortized		Gross Unrealized				Fair
	(at June 30, 2014, in millions)	Cost		Gains		Losses		Value
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,060	$	40	$	6	$	2,094
	Obligations of states, municipalities and political subdivisions:
	Pre-refunded	8,096		359		—		8,455
	All other	25,309		1,341		80		26,570
	Total obligations of states, municipalities and political subdivisions	33,405		1,700		80		35,025
	Debt securities issued by foreign governments	2,549		37		4		2,582
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,154		178		6		2,326
	All other corporate bonds	21,541		969		95		22,415
	Redeemable preferred stock	132		9		—		141
	Total	$	61,841	$	2,933	$	191	$	64,583
		Amortized		Gross Unrealized				Fair
	(at December 31, 2013, in millions)	Cost		Gains		Losses		Value
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,288	$	39	$	12	$	2,315
	Obligations of states, municipalities and political subdivisions:
	Pre-refunded	9,074		445		1		9,518
	All other	25,414		991		361		26,044
	Total obligations of states, municipalities and political subdivisions	34,488		1,436		362		35,562
	Debt securities issued by foreign governments	2,552		33		8		2,577
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,263		179		18		2,424
	All other corporate bonds	20,472		767		299		20,940
	Redeemable preferred stock	133		6		1		138
	Total	$	62,196	$	2,460	$	700	$	63,956
Cost and fair value of investments in equity securities [Table Text Block]	'
	:
				Gross Unrealized				Fair
	(at June 30, 2014, in millions)	Cost		Gains		Losses		Value
	Common stock	$	396	$	303	$	—	$	699
	Non-redeemable preferred stock	252		31		2		281
	Total	$	648	$	334	$	2	$	980
				Gross Unrealized				Fair
	(at December 31, 2013, in millions)	Cost		Gains		Losses		Value
	Common stock	$	385	$	226	$	1	$	610
	Non-redeemable preferred stock	301		34		2		333
	Total	$	686	$	260	$	3	$	943
Unrealized investment losses [Table Text Block]	'
		Less than 12 months				12 months or longer					Total
	(at June 30, 2014, in millions)	Fair		Gross		Fair		Gross			Fair			Gross
		Value		Unrealized		Value		Unrealized			Value			Unrealized
				Losses				Losses						Losses
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	40	$	1	$	106	$	5		$	146		$	6
	Obligations of states, municipalities and political subdivisions	1,378		4		2,750		76			4,128			80
	Debt securities issued by foreign governments	425		2		115		2			540			4
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	77		—		268		6			345			6
	All other corporate bonds	1,015		7		2,914		88			3,929			95
	Total fixed maturities	2,935		14		6,153		177			9,088			191
	Equity securities
	Common stock	29		—		1		—			30			—
	Non-redeemable preferred stock	152		2		—		—			152			2
	Total equity securities	181		2		1		—			182			2
	Total	$	3,116	$	16	$	6,154	$	177		$	9,270		$	193
		Less than 12 months				12 months or longer					Total
	(at December 31, 2013, in millions)	Fair		Gross		Fair		Gross			Fair			Gross
		Value		Unrealized		Value		Unrealized			Value			Unrealized
				Losses				Losses						Losses
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	433	$	12	$	—	$	—		$	433		$	12
	Obligations of states, municipalities and political subdivisions	4,785		298		432		64			5,217			362
	Debt securities issued by foreign governments	907		8		1		—			908			8
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	542		17		21		1			563			18
	All other corporate bonds	6,887		253		421		46			7,308			299
	Redeemable preferred stock	82		1		—		—			82			1
	Total fixed maturities	13,636		589		875		111			14,511			700
	Equity securities
	Common stock	53		1		—		—			53			1
	Non-redeemable preferred stock	147		2		—		—			147			2
	Total equity securities	200		3		—		—			200			3
	Total	$	13,836	$	592	$	875	$	111		$	14,711		$	703
Securities continuously in an unrealized loss position of greater than 20% of amortized cost by length of time [Table Text Block]	'
		Period For Which Fair Value Is Less Than 80% of Amortized Cost
	(at June 30, 2014, in millions)	3 Months		Greater Than 3		Greater Than 6		Greater Than			Total
		or Less		Months, 6 Months		Months, 12 Months		12 Months
				or Less		or Less
	Fixed maturities
	Mortgage-backed securities	$	—	$	—	$	—	$	—		$	—
	Other	1		4		1		2			8
	Total fixed maturities	1		4		1		2			8
	Equity securities	—		—		—		—			—
	Total	$	1	$	4	$	1	$	2		$	8
Impairment charges included in net realized investment gains [Table Text Block]	'
		Three Months Ended				Six Months Ended
		June 30,				June 30,
	(in millions)	2014		2013		2014		2013
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	—	$	—	$	—	$	—
	Obligations of states, municipalities and political subdivisions	—		—		—		—
	Debt securities issued by foreign governments	—		—		—		—
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	1		1		1		2
	All other corporate bonds	—		—		3		—
	Redeemable preferred stock	—		—		—		—
	Total fixed maturities	1		1		4		2
	Equity securities
	Common stock	—		1		5		1
	Non-redeemable preferred stock	—		—		—		—
	Total equity securities	—		1		5		1
	Other investments	—		—		1		4
	Total	$	1	$	2	$	10	$	7
Cumulative amount of and the changes during the reporting period in the credit losses 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 [Table Text Block]	'
		2014
	(for the three months ended June 30, in	Cumulative		Additions for		Additions for		Reductions			Adjustments to			Cumulative
	millions)	OTTI Credit		OTTI Securities		OTTI		Due to			Book Value of			OTTI Credit
		Losses		Where No		Securities		Sales/Defaults			Credit-			Losses
		Recognized for		Credit Losses		Where Credit		of Credit-			Impaired			Recognized for
		Securities		Were Previously		Losses Have		Impaired			Securities due			Securities Still
		Held,		Recognized		Been		Securities			to Changes in			Held, End of
		Beginning of				Previously					Cash Flows			Period
		Period				Recognized
	Fixed maturities
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	42	$	—	$	1	$	—		$	—		$	43
	All other corporate bonds	69		—		—		—			(3		)	66
	Total fixed maturities	$	111	$	—	$	1	$	—		$	(3	)	$	109
	(for the six months ended June 30, in
	millions)
	Fixed maturities
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	53	$	—	$	1	$	(3	)	$	(8	)	$	43
	All other corporate bonds	65		—		3		—			(2		)	66
	Total fixed maturities	$	118	$	—	$	4	$	(3	)	$	(10	)	$	109
		2013
	(for the three months ended June 30, in	Cumulative		Additions for		Additions for		Reductions			Adjustments to			Cumulative
	millions)	OTTI Credit		OTTI Securities		OTTI		Due to			Book Value of			OTTI Credit
		Losses		Where No		Securities		Sales/Defaults			Credit-			Losses
		Recognized for		Credit Losses		Where Credit		of Credit-			Impaired			Recognized for
		Securities		Were Previously		Losses Have		Impaired			Securities due			Securities Still
		Held,		Recognized		Been		Securities			to Changes in			Held, End of
		Beginning of				Previously					Cash Flows			Period
		Period				Recognized
	Fixed maturities
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	55	$	—	$	1	$	—		$	(1	)	$	55
	All other corporate bonds	71		—		—		—			(1		)	70
	Total fixed maturities	$	126	$	—	$	1	$	—		$	(2	)	$	125
	(for the six months ended June 30, in
	millions)
	Fixed maturities
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	55	$	—	$	2	$	—		$	(2	)	$	55
	All other corporate bonds	72		—		—		—			(2		)	70
	Total fixed maturities	$	127	$	—	$	2	$	—		$	(4	)	$	125

Fair_Value_Measurements_tables

Fair Value Measurements (tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Measurements disclosure	'
Level within the fair value hierarchy at which the Company's financial assets and financial liabilities reported at fair value are measured [Table Text Block]	'
	(at June 30, 2014, in millions)	Total			Level 1			Level 2			Level 3
	Invested assets:
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,094		$	2,077		$	17		$	—
	Obligations of states, municipalities and political subdivisions	35,025			—			35,012			13
	Debt securities issued by foreign governments	2,582			—			2,582			—
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,326			—			2,275			51
	All other corporate bonds	22,415			21			22,203			191
	Redeemable preferred stock	141			—			132			9
	Total fixed maturities	64,583			2,098			62,221			264
	Equity securities
	Common stock	699			699			—			—
	Non-redeemable preferred stock	281			123			158			—
	Total equity securities	980			822			158			—
	Other investments	55			19			—			36
	Total	$	65,618		$	2,939		$	62,379		$	300
	(at December 31, 2013, in millions)	Total			Level 1			Level 2			Level 3
	Invested assets:
	Fixed maturities
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,315		$	2,298		$	17		$	—
	Obligations of states, municipalities and political subdivisions	35,562			1			35,538			23
	Debt securities issued by foreign governments	2,577			—			2,577			—
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,424			—			2,415			9
	All other corporate bonds	20,940			—			20,726			214
	Redeemable preferred stock	138			—			129			9
	Total fixed maturities	63,956			2,299			61,402			255
	Equity securities
	Common stock	610			610			—			—
	Non-redeemable preferred stock	333			138			195			—
	Total equity securities	943			748			195			—
	Other investments	53			19			—			34
	Total	$	64,952		$	3,066		$	61,597		$	289
Changes in the Level 3 fair value category [Table Text Block]	'
	Three Months Ended June 30, 2014 (in millions)	Fixed			Other			Total
		Maturities			Investments
	Balance at March 31, 2014	$	267		$	37		$	304
	Total realized and unrealized investment gains (losses):
	Reported in net realized investment gains (1)	1			—			1
	Reported in increases (decreases) in other comprehensive income	2			(1		)	1
	Purchases, sales and settlements/maturities:
	Purchases	58			—			58
	Sales	(1		)	—			(1		)
	Settlements/maturities	(31		)	—			(31		)
	Gross transfers into Level 3	—			—			—
	Gross transfers out of Level 3	(32		)	—			(32		)
	Balance at June 30, 2014	$	264		$	36		$	300
	Amount of total realized investment gains (losses) for the period included in the consolidated statement of income attributable to changes in the fair value of assets still held at the reporting date	$	—		$	—		$	—
	(1)         Includes impairments on investments held at the end of the period as well as amortization on fixed maturities.
	Six Months Ended June 30, 2014 (in millions)	Fixed			Other			Total
		Maturities			Investments
	Balance at December 31, 2013	$	255		$	34		$	289
	Total realized and unrealized investment gains (losses):
	Reported in net realized investment gains (1)	2			1			3
	Reported in increases (decreases) in other comprehensive income	—			—			—
	Purchases, sales and settlements/maturities:
	Purchases	142			1			143
	Sales	(1		)	—			(1		)
	Settlements/maturities	(60		)	—			(60		)
	Gross transfers into Level 3	—			—			—
	Gross transfers out of Level 3	(74		)	—			(74		)
	Balance at June 30, 2014	$	264		$	36		$	300
	Amount of total realized investment gains (losses) for the period included in the consolidated statement of income attributable to changes in the fair value of assets still held at the reporting date	$	—		$	—		$	—
	(1)     Includes impairments on investments held at the end of the period as well as amortization on fixed maturities.
	Twelve Months Ended December 31, 2013 (in millions)	Fixed			Other			Total
		Maturities			Investments
	Balance at December 31, 2012	$	230		$	54		$	284
	Total realized and unrealized investment gains (losses):
	Reported in net realized investment gains (1)	4			12			16
	Reported in increases (decreases) in other comprehensive income	(2		)	1			(1		)
	Purchases, sales and settlements/maturities:
	Purchases	180			—			180
	Sales	(25		)	(33		)	(58		)
	Settlements/maturities	(83		)	—			(83		)
	Gross transfers into Level 3	15			—			15
	Gross transfers out of Level 3	(64		)	—			(64		)
	Balance at December 31, 2013	$	255		$	34		$	289
	Amount of total realized investment gains (losses) for the period included in the consolidated statement of income attributable to changes in the fair value of assets still held at the reporting date	$	—		$	—		$	—
	(1)           Includes impairments on investments held at the end of the period as well as amortization on fixed maturities.
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 measured on a recurring basis [Table Text Block]	'
	(at June 30, 2014, in millions)	Carrying			Fair			Level 1			Level 2		Level 3
		Value			Value
	Financial assets:
	Short-term securities	$	3,818		$	3,818		$	1,290		$	2,477	$	51
	Financial liabilities:
	Debt	$	6,247		$	7,452		$	—		$	7,452	$	—
	Commercial paper	$	100		$	100		$	—		$	100	$	—
	(at December 31, 2013, in millions)	Carrying			Fair			Level 1			Level 2		Level 3
		Value			Value
	Financial assets:
	Short-term securities	$	3,882		$	3,882		$	1,608		$	2,215	$	59
	Financial liabilities:
	Debt	$	6,246		$	7,123		$	—		$	7,123	$	—
	Commercial paper	$	100		$	100		$	—		$	100	$	—

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (tables)	6 Months Ended
	Jun. 30, 2014
Goodwill and Other Intangible Assets disclosure	'
Goodwill by segment [Table Text Block]	'
	(in millions)	June 30,		December 31,
		2014		2013
	Business Insurance	$	2,168	$	2,168
	Financial, Professional & International Insurance (1)	826		826
	Personal Insurance	613		613
	Other	27		27
	Total	$	3,634	$	3,634
	(1)           Includes goodwill associated with the Company’s acquisition of Dominion in 2013, which is subject to the impact of changes   in foreign currency exchange rates.
Other intangible assets by major asset class [Table Text Block]	'
	(at June 30, 2014, in millions)	Gross		Accumulated		Net
		Carrying		Amortization
		Amount
	Intangibles subject to amortization
	Customer-related	$	460	$	429	$	31
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles (1)	201		121		80
	Total intangible assets subject to amortization	661		550		111
	Intangible assets not subject to amortization	217		—		217
	Total other intangible assets	$	878	$	550	$	328
	(at December 31, 2013, in millions)	Gross		Accumulated		Net
		Carrying		Amortization
		Amount
	Intangibles subject to amortization
	Customer-related	$	460	$	414	$	46
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles (1)	201		113		88
	Total intangible assets subject to amortization	661		527		134
	Intangible assets not subject to amortization	217		—		217
	Total other intangible assets	$	878	$	527	$	351
	(1)           The time value of money and the risk margin (cost of capital) components of the intangible asset run off at different rates, and,   as such, the amount recognized in income may be a net benefit in some periods and a net expense in other periods.
Amortization expense for other intangible assets by major asset class [Table Text Block]	'
		Three Months Ended				Six Months Ended
		June 30,				June 30,
	(in millions)	2014		2013		2014		2013
	Customer-related	$	7	$	8	$	15	$	15
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles	4		4		8		8
	Total amortization expense	$	11	$	12	$	23	$	23

Other_Comprehensive_Income_and1

Other Comprehensive Income and Accumulated Other Comprehensive Income (tables)	6 Months Ended
	Jun. 30, 2014
Other Comprehensive Income and Accumulated Other Comprehensive Income disclosure	'
Changes in accumulated other comprehensive income (AOCI) [Table Text Block]	'
	(in millions)	Changes in Net			Changes in Net			Net Benefit Plan			Net Unrealized			Total Accumulated
		Unrealized Gains on			Unrealized Gains on			Assets and			Foreign Currency			Other
		Investment			Investment Securities			Obligations			Translation			Comprehensive
		Securities Having No			Having Credit Losses			Recognized in						Income
		Credit Losses			Recognized in the			Shareholders’ Equity
		Recognized in the			Consolidated
		Consolidated			Statement of Income
		Statement of Income
	Balance, December 31, 2013	$	1,125		$	197		$	(431	)	$	(81	)	$	810
	Other comprehensive income (OCI) before reclassifications	708			—			—			43			751
	Amounts reclassified from AOCI	(19		)	2			18			—			1
	Net OCI, current period	689			2			18			43			752
	Balance, June 30, 2014	$	1,814		$	199		$	(413	)	$	(38	)	$	1,562
Pretax components of other comprehensive income (loss) and the related income tax expense (benefit) for each component [Table Text Block]	'
	(for the three months ended June 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	518		$	(1,790	)
	Income tax expense (benefit)	180			(621		)
	Net of taxes	338			(1,169		)
	Having credit losses recognized in the consolidated statement of income	1			(5		)
	Income tax expense (benefit)	—			(2		)
	Net of taxes	1			(3		)
	Net changes in benefit plan assets and obligations	15			26
	Income tax expense	5			9
	Net of taxes	10			17
	Net changes in unrealized foreign currency translation	97			(73		)
	Income tax expense (benefit)	11			(22		)
	Net of taxes	86			(51		)
	Total other comprehensive income (loss)	631			(1,842		)
	Total income tax expense (benefit)	196			(636		)
	Total other comprehensive income (loss), net of taxes	$	435		$	(1,206	)
	(for the six months ended June 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	1,055		$	(2,166	)
	Income tax expense (benefit)	366			(752		)
	Net of taxes	689			(1,414		)
	Having credit losses recognized in the consolidated statement of income	3			4
	Income tax expense	1			1
	Net of taxes	2			3
	Net changes in benefit plan assets and obligations	30			54
	Income tax expense	12			19
	Net of taxes	18			35
	Net changes in unrealized foreign currency translation	54			(169		)
	Income tax expense (benefit)	11			(29		)
	Net of taxes	43			(140		)
	Total other comprehensive income (loss)	1,142			(2,277		)
	Total income tax expense (benefit)	390			(761		)
	Total other comprehensive income (loss), net of taxes	$	752		$	(1,516	)
Pretax components of the amounts reclassified from accumulated other comprehensive income and the related income tax expense (benefit) for each component [Table Text Block]	'
	(for the three months ended June 30, in millions)	2014			2013
	Reclassification adjustments related to unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income (1)	$	(24	)	$	(34	)
	Income tax expense (2)	(8		)	(12		)
	Net of taxes	(16		)	(22		)
	Having credit losses recognized in the consolidated statement of income (1)	1			1
	Income tax benefit (2)	1			1
	Net of taxes	—			—
	Reclassification adjustment related to benefit plan assets and obligations (3)	15			25
	Income tax benefit (2)	5			8
	Net of taxes	10			17
	Reclassification adjustment related to foreign currency translation (1)	—			—
	Income tax benefit (2)	—			—
	Net of taxes	—			—
	Total reclassifications	(8		)	(8		)
	Total income tax (expense) benefit	(2		)	(3		)
	Total reclassifications, net of taxes	$	(6	)	$	(5	)
	(1)     (Increases) decreases net realized investment gains on the consolidated statement of income.
	(2)     (Increases) decreases income tax expense on the consolidated statement of income.
	(3)     Increases (decreases) general and administrative expenses on the consolidated statement of income.
	(for the six months ended June 30, in millions)	2014			2013
	Reclassification adjustments related to unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income (1)	$	(29	)	$	(51	)
	Income tax expense (2)	(10		)	(18		)
	Net of taxes	(19		)	(33		)
	Having credit losses recognized in the consolidated statement of income (1)	4			2
	Income tax benefit (2)	2			1
	Net of taxes	2			1
	Reclassification adjustment related to benefit plan assets and obligations (3)	30			52
	Income tax benefit (2)	12			18
	Net of taxes	18			34
	Reclassification adjustment related to foreign currency translation (1)	—			(3		)
	Income tax benefit (2)	—			—
	Net of taxes	—			(3		)
	Total reclassifications	5			—
	Total income tax benefit	4			1
	Total reclassifications, net of taxes	$	1		$	(1	)
	(1)     (Increases) decreases net realized investment gains on the consolidated statement of income.
	(2)     (Increases) decreases income tax expense on the consolidated statement of income.
	(3)     Increases (decreases) general and administrative expenses on the consolidated statement of income.

Earnings_per_Share_table

Earnings per Share (table)	6 Months Ended
	Jun. 30, 2014
Earnings per Share disclosure	'
Earnings per share reconciliation [Table Text Block]	'
		Three Months Ended						Six Months Ended
		June 30,						June 30,
	(in millions, except per share amounts)	2014			2013			2014			2013
	Basic and Diluted
	Net income, as reported	$	683		$	925		$	1,735		$	1,821
	Participating share-based awards — allocated income	(5		)	(7		)	(12		)	(14		)
	Net income available to common shareholders — basic and diluted	$	678		$	918		$	1,723		$	1,807
	Common Shares
	Basic
	Weighted average shares outstanding	343			375.9			346.9			376.8
	Diluted
	Weighted average shares outstanding	343			375.9			346.9			376.8
	Weighted average effects of dilutive securities — stock options and performance shares	3.7			4			3.6			4
	Total	346.7			379.9			350.5			380.8
	Net Income per Common Share
	Basic	$	1.98		$	2.44		$	4.97		$	4.8
	Diluted	$	1.95		$	2.41		$	4.91		$	4.75

ShareBased_Incentive_Compensat1

Share-Based Incentive Compensation (table)	6 Months Ended
	Jun. 30, 2014
Share-Based Incentive Compensation disclosure	'
Information for fully vested stock option awards [Table Text Block]	'
	Stock Options	Number	Weighted		Weighted	Aggregate
			Average		Average	Intrinsic
			Exercise		Contractual	Value
			Price		Life	($ in millions)
					Remaining
	Vested at end of period (1)	7,967,953	$	58.07	6.1 years	$	287
	Exercisable at end of period	5,137,812	$	50.32	4.7 years	$	225

Pension_Plans_Retirement_Benef1

Pension Plans, Retirement Benefits and Savings Plans (table)	6 Months Ended
	Jun. 30, 2014
Pension Plans, Retirement Benefits and Savings Plans disclosure	'
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]	'
		Pension Plans						Postretirement Benefit Plans
	(for the three months ended June 30, in millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	28		$	30		$	—		$	—
	Interest cost on benefit obligation	37			33			3			2
	Expected return on plan assets	(55		)	(52		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			—			(1		)
	Net actuarial (gain) loss	16			26			(1		)	—
	Net periodic benefit cost	$	26		$	37		$	2		$	1
		Pension Plans						Postretirement Benefit Plans
	(for the six months ended June 30, in millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	55		$	59		$	—		$	—
	Interest cost on benefit obligation	75			66			5			4
	Expected return on plan assets	(109		)	(104		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			(1		)	(1		)
	Net actuarial (gain) loss	32			53			(1		)	—
	Net periodic benefit cost	$	53		$	74		$	3		$	3

Consolidating_Financial_Statem1

Consolidating Financial Statements (Unaudited) (tables)	6 Months Ended
	Jun. 30, 2014
Consolidating Financial Statements of The Travelers Companies, Inc. and Subsidiaries (Unaudited) disclosure	'
Consolidating Statement of Income (Unaudited) [Table Text Block]	'
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the three months ended June 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	4,020		$	1,908		$	—		$	—		$	5,928
	Net investment income	472			221			2			—			695
	Fee income	111			1			—			—			112
	Net realized investment gains (1)	5			11			—			—			16
	Other revenues	32			2			—			—			34
	Total revenues	4,640			2,143			2			—			6,785
	Claims and expenses
	Claims and claim adjustment expenses	2,569			1,257			—			—			3,826
	Amortization of deferred acquisition costs	650			315			—			—			965
	General and administrative expenses	697			300			4			—			1,001
	Interest expense	12			—			80			—			92
	Total claims and expenses	3,928			1,872			84			—			5,884
	Income (loss) before income taxes	712			271			(82		)	—			901
	Income tax expense (benefit)	186			60			(28		)	—			218
	Net income of subsidiaries	—			—			737			(737		)	—
	Net income	$	526		$	211		$	683		$	(737	)	$	683
	(1)     Total other-than-temporary impairment (OTTI) for the three months ended June 30, 2014, and the amounts comprising total OTTI that were recognized in net realized investment gains and in other comprehensive income (OCI) were as follows:
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Total OTTI gains (losses)	$	(1	)	$	—		$	—		$	—		$	(1	)
	OTTI losses recognized in net realized investment gains	$	(1	)	$	—		$	—		$	—		$	(1	)
	OTTI gains recognized in OCI	$	—		$	—		$	—		$	—		$	—
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the three months ended June 30, 2013
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	3,804		$	1,799		$	—		$	—		$	5,603
	Net investment income	457			229			1			—			687
	Fee income	82			—			—			—			82
	Net realized investment gains (1)	124			43			—			—			167
	Other revenues	103			32			—			—			135
	Total revenues	4,570			2,103			1			—			6,674
	Claims and expenses
	Claims and claim adjustment expenses	2,339			1,191			—			—			3,530
	Amortization of deferred acquisition costs	635			315			—			—			950
	General and administrative expenses	639			289			3			—			931
	Interest expense	12			—			74			—			86
	Total claims and expenses	3,625			1,795			77			—			5,497
	Income (loss) before income taxes	945			308			(76		)	—			1,177
	Income tax expense (benefit)	203			77			(28		)	—			252
	Net income of subsidiaries	—			—			973			(973		)	—
	Net income	$	742		$	231		$	925		$	(973	)	$	925
	(1)     Total other-than-temporary impairment (OTTI) for the three months ended June 30, 2013, and the amounts comprising total OTTI that were recognized in net realized investment gains and in other comprehensive income (OCI) were as follows:
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Total OTTI gains (losses)	$	(1	)	$	—		$	—		$	—		$	(1	)
	OTTI losses recognized in net realized investment gains	$	(1	)	$	(1	)	$	—		$	—		$	(2	)
	OTTI gains recognized in OCI	$	—		$	1		$	—		$	—		$	1
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the six months ended June 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	7,964		$	3,787		$	—		$	—		$	11,751
	Net investment income	972			456			3			—			1,431
Fee income	218			1			—			—			219
Net realized investment gains (1)	6			9			2			—			17
Other revenues	65			10			—			—			75
Total revenues	9,225			4,263			5			—			13,493
Claims and expenses
Claims and claim adjustment expenses	4,790			2,351			—			—			7,141
Amortization of deferred acquisition costs	1,285			630			—			—			1,915
General and administrative expenses	1,310			565			7			—			1,882
Interest expense	24			—			160			—			184
Total claims and expenses	7,409			3,546			167			—			11,122
Income (loss) before income taxes	1,816			717			(162		)	—			2,371
Income tax expense (benefit)	507			185			(56		)	—			636
Net income of subsidiaries	—			—			1,841			(1,841		)	—
Net income	$	1,309		$	532		$	1,735		$	(1,841	)	$	1,735
(1)     Total other-than-temporary impairment (OTTI) for the six months ended June 30, 2014, and the amounts comprising total OTTI that were recognized in net realized investment gains (losses) and in other comprehensive income (OCI) were as follows:
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Total OTTI gains	$	(3	)	$	(5	)	$	—		$	—		$	(8	)
OTTI losses recognized in net realized investment gains (losses)	$	(5	)	$	(5	)	$	—		$	—		$	(10	)
OTTI gains recognized in OCI	$	2		$	—		$	—		$	—		$	2
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF INCOME (Unaudited)
For the six months ended June 30, 2013
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Revenues
Premiums	$	7,545		$	3,575		$	—		$	—		$	11,120
Net investment income	912			442			3			—			1,357
Fee income	178			1			—			—			179
Net realized investment gains (1)	117			59			1			—			177
Other revenues	132			37			—			—			169
Total revenues	8,884			4,114			4			—			13,002
Claims and expenses
Claims and claim adjustment expenses	4,470			2,213			—			—			6,683
Amortization of deferred acquisition costs	1,272			626			—			—			1,898
General and administrative expenses	1,269			575			2			—			1,846
Interest expense	29			—			149			—			178
Total claims and expenses	7,040			3,414			151			—			10,605
Income (loss) before income taxes	1,844			700			(147		)	—			2,397
Income tax expense (benefit)	452			176			(52		)	—			576
Net income of subsidiaries	—			—			1,916			(1,916		)	—
Net income	$	1,392		$	524		$	1,821		$	(1,916	)	$	1,821
(1)     Total other-than-temporary impairment (OTTI) for the six months ended June 30, 2013, and the amounts comprising total OTTI that were recognized in net realized investment gains and in other comprehensive income (OCI) were as follows:
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Total OTTI gains (losses)	$	(4	)	$	3		$	—		$	—		$	(1	)
OTTI losses recognized in net realized investment gains	$	(5	)	$	(2	)	$	—		$	—		$	(7	)
OTTI gains recognized in OCI	$	1		$	5		$	—		$	—		$	6
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
Consolidating Statement of Comprehensive Income (Loss) (Unaudited) [Table Text Block]	'
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
	For the three months ended June 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	526		$	211		$	683		$	(737	)	$	683
	Other comprehensive income:
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	359			155			4			—			518
	Having credit losses recognized in the consolidated statement of income	2			(1		)	—			—			1
	Net changes in benefit plan assets and obligations	—			—			15			—			15
	Net changes in unrealized foreign currency translation	51			46			—			—			97
	Other comprehensive income before income taxes and other comprehensive income of subsidiaries	412			200			19			—			631
	Income tax expense	129			61			6			—			196
	Other comprehensive income net of taxes, before other comprehensive income of subsidiaries	283			139			13			—			435
	Other comprehensive income of subsidiaries	—			—			422			(422		)	—
	Other comprehensive income	283			139			435			(422		)	435
	Comprehensive income	$	809		$	350		$	1,118		$	(1,159	)	$	1,118
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited)
	For the three months ended June 30, 2013
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	742		$	231		$	925		$	(973	)	$	925
	Other comprehensive income (loss):
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	(1,282		)	(509		)	1			—			(1,790		)
	Having credit losses recognized in the consolidated statement of income	(2		)	(3		)	—			—			(5		)
	Net changes in benefit plan assets and obligations	—			1			25			—			26
	Net changes in unrealized foreign currency translation	(51		)	(22		)	—			—			(73		)
	Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(1,335		)	(533		)	26			—			(1,842		)
	Income tax expense (benefit)	(462		)	(183		)	9			—			(636		)
	Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(873		)	(350		)	17			—			(1,206		)
	Other comprehensive loss of subsidiaries	—			—			(1,223		)	1,223			—
	Other comprehensive loss	(873		)	(350		)	(1,206		)	1,223			(1,206		)
	Comprehensive loss	$	(131	)	$	(119	)	$	(281	)	$	250		$	(281	)
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
	For the six months ended June 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	1,309		$	532		$	1,735		$	(1,841	)	$	1,735
	Other comprehensive income:
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	750			301			4			—			1,055
	Having credit losses recognized in the consolidated statement of income	9			(6		)	—			—			3
	Net changes in benefit plan assets and obligations	—			—			30			—			30
	Net changes in unrealized foreign currency translation	26			28			—			—			54
	Other comprehensive income before income taxes and other comprehensive income of subsidiaries	785			323			34			—			1,142
	Income tax expense	272			106			12			—			390
	Other comprehensive income, net of taxes, before other comprehensive income of subsidiaries	513			217			22			—			752
	Other comprehensive income of subsidiaries	—			—			730			(730		)	—
	Other comprehensive income	513			217			752			(730		)	752
	Comprehensive income	$	1,822		$	749		$	2,487		$	(2,571	)	$	2,487
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
	For the six months ended June 30, 2013
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	1,392		$	524		$	1,821		$	(1,916	)	$	1,821
	Other comprehensive income (loss):
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	(1,597		)	(576		)	7			—			(2,166		)
	Having credit losses recognized in the consolidated statement of income	5			(1		)	—			—			4
Net changes in benefit plan assets and obligations	1			3			50			—			54
Net changes in unrealized foreign currency translation	(61		)	(108		)	—			—			(169		)
Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(1,652		)	(682		)	57			—			(2,277		)
Income tax expense (benefit)	(570		)	(211		)	20			—			(761		)
Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(1,082		)	(471		)	37			—			(1,516		)
Other comprehensive loss of subsidiaries	—			—			(1,553		)	1,553			—
Other comprehensive loss	(1,082		)	(471		)	(1,516		)	1,553			(1,516		)
Comprehensive income	$	310		$	53		$	305		$	(363	)	$	305
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
Consolidating Balance Sheet (Unaudited) [Table Text Block]	'
	CONSOLIDATING BALANCE SHEET (Unaudited)
	At June 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Assets
	Fixed maturities, available for sale, at fair value (amortized cost $61,841)	$	44,292		$	20,251		$	40		$	—		$	64,583
	Equity securities, available for sale, at fair value (cost $648)	302			541			137			—			980
	Real estate investments	55			899			—			—			954
	Short-term securities	1,516			539			1,763			—			3,818
	Other investments	2,607			998			1			—			3,606
	Total investments	48,772			23,228			1,941			—			73,941
	Cash	167			143			1			—			311
	Investment income accrued	483			223			4			—			710
	Premiums receivable	4,400			2,189			—			—			6,589
	Reinsurance recoverables	6,250			3,258			—			—			9,508
	Ceded unearned premiums	637			125			—			—			762
	Deferred acquisition costs	1,621			258			—			—			1,879
	Contractholder receivables	3,264			1,107			—			—			4,371
	Goodwill	2,619			1,015			—			—			3,634
	Other intangible assets	234			94			—			—			328
	Investment in subsidiaries	—			—			29,105			(29,105		)	—
	Other assets	2,180			90			508			—			2,778
	Total assets	$	70,627		$	31,730		$	31,559		$	(29,105	)	$	104,811
	Liabilities
	Claims and claim adjustment expense reserves	$	33,569		$	17,287		$	—		$	—		$	50,856
	Unearned premium reserves	8,301			3,788			—			—			12,089
	Contractholder payables	3,264			1,107			—			—			4,371
	Payables for reinsurance premiums	224			173			—			—			397
	Deferred taxes	109			73			57			—			239
	Debt	692			—			5,655			—			6,347
	Other liabilities	3,899			753			328			—			4,980
	Total liabilities	50,058			23,181			6,040			—			79,279
	Shareholders’ equity
	Common stock (1,750.0 shares authorized; 339.0 shares issued and outstanding)	—			390			21,694			(390		)	21,694
	Additional paid-in capital	11,634			6,502			—			(18,136		)	—
	Retained earnings	7,655			1,017			25,649			(8,659		)	25,662
	Accumulated other comprehensive income	1,280			640			1,562			(1,920		)	1,562
	Treasury stock, at cost (419.5 shares)	—			—			(23,386		)	—			(23,386		)
	Total shareholders’ equity	20,569			8,549			25,519			(29,105		)	25,532
	Total liabilities and shareholders’ equity	$	70,627		$	31,730		$	31,559		$	(29,105	)	$	104,811
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING BALANCE SHEET (Unaudited)
	At December 31, 2013
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Assets
	Fixed maturities, available for sale, at fair value (amortized cost $62,196)	$	43,720		$	20,199		$	37		$	—		$	63,956
	Equity securities, available for sale, at fair value (cost $686)	329			484			130			—			943
	Real estate investments	33			905			—			—			938
	Short-term securities	1,867			492			1,523			—			3,882
	Other investments	2,450			990			1			—			3,441
	Total investments	48,399			23,070			1,691			—			73,160
	Cash	137			154			3			—			294
	Investment income accrued	499			231			4			—			734
	Premiums receivable	4,124			2,001			—			—			6,125
	Reinsurance recoverables	6,292			3,421			—			—			9,713
	Ceded unearned premiums	712			89			—			—			801
	Deferred acquisition costs	1,570			234			—			—			1,804
	Deferred taxes	279			86			(62		)	—			303
	Contractholder receivables	3,179			1,149			—			—			4,328
	Goodwill	2,619			1,015			—			—			3,634
	Other intangible assets	250			101			—			—			351
	Investment in subsidiaries	—			—			28,616			(28,616		)	—
Other assets	2,010			357			198			—			2,565
Total assets	$	70,070		$	31,908		$	30,450		$	(28,616	)	$	103,812
Liabilities
Claims and claim adjustment expense reserves	$	33,506		$	17,389		$	—		$	—		$	50,895
Unearned premium reserves	8,188			3,662			—			—			11,850
Contractholder payables	3,179			1,149			—			—			4,328
Payables for reinsurance premiums	127			171			—			—			298
Debt	692			—			5,654			—			6,346
Other liabilities	4,109			1,180			10			—			5,299
Total liabilities	49,801			23,551			5,664			—			79,016
Shareholders’ equity
Common stock (1,750.0 shares authorized; 353.5 shares issued and outstanding)	—			390			21,500			(390		)	21,500
Additional paid-in capital	11,634			6,502			—			(18,136		)	—
Retained earnings	7,868			1,042			24,281			(8,900		)	24,291
Accumulated other comprehensive income	767			423			810			(1,190		)	810
Treasury stock, at cost (401.5 shares)	—			—			(21,805		)	—			(21,805		)
Total shareholders’ equity	20,269			8,357			24,786			(28,616		)	24,796
Total liabilities and shareholders’ equity	$	70,070		$	31,908		$	30,450		$	(28,616	)	$	103,812
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
Consolidating Statement of Cash Flows (Unaudited) [Table Text Block]	'
	CONSOLIDATING STATEMENT OF CASH FLOWS (Unaudited)
	For the six months ended June 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Cash flows from operating activities
	Net income	$	1,309		$	532		$	1,735		$	(1,841	)	$	1,735
	Net adjustments to reconcile net income to net cash provided by operating activities	(154		)	(317		)	305			(241		)	(407		)
	Net cash provided by operating activities	1,155			215			2,040			(2,082		)	1,328
	Cash flows from investing activities
	Proceeds from maturities of fixed maturities	3,005			1,909			1			—			4,915
	Proceeds from sales of investments:
	Fixed maturities	415			369			1			—			785
	Equity securities	57			34			4			—			95
	Real estate investments	—			5			—			—			5
	Other investments	196			142			—			—			338
	Purchases of investments:
	Fixed maturities	(3,399		)	(2,046		)	(4		)	—			(5,449		)
	Equity securities	(3		)	(32		)	(5		)	—			(40		)
	Real estate investments	(21		)	(15		)	—			—			(36		)
	Other investments	(154		)	(72		)	—			—			(226		)
	Net sales (purchases) of short-term securities	347			(47		)	(240		)	—			60
	Securities transactions in course of settlement	113			91			—			—			204
	Acquisitions, net of cash acquired	(9		)	(3		)	—			—			(12		)
	Other	(147		)	(5		)	—			—			(152		)
	Net cash provided by (used in) investing activities	400			330			(243		)	—			487
	Cash flows from financing activities
	Dividends paid to shareholders	—			—			(365		)	—			(365		)
	Issuance of common stock — employee share options	—			—			122			—			122
	Treasury stock acquired — share repurchase authorization	—			—			(1,525		)	—			(1,525		)
	Treasury stock acquired — net employee share-based compensation	—			—			(55		)	—			(55		)
	Excess tax benefits from share-based payment arrangements	—			—			24			—			24
	Dividends paid to parent company	(1,525		)	(557		)	—			2,082			—
	Net cash used in financing activities	(1,525		)	(557		)	(1,799		)	2,082			(1,799		)
	Effect of exchange rate changes on cash	—			1			—			—			1
	Net increase (decrease) in cash	30			(11		)	(2		)	—			17
	Cash at beginning of year	137			154			3			—			294
	Cash at end of period	$	167		$	143		$	1		$	—		$	311
	Supplemental disclosure of cash flow information
	Income taxes paid (received)	$	570		$	205		$	(48	)	$	—		$	727
	Interest paid	$	24		$	—		$	159		$	—		$	183
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF CASH FLOWS (Unaudited)
	For the six months ended June 30, 2013
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Cash flows from operating activities
	Net income	$	1,392		$	524		$	1,821		$	(1,916	)	$	1,821
	Net adjustments to reconcile net income to net cash provided by operating activities	(807		)	37			(1,148		)	1,349			(569		)
	Net cash provided by operating activities	585			561			673			(567		)	1,252
	Cash flows from investing activities
	Proceeds from maturities of fixed maturities	2,570			1,330			1			—			3,901
	Proceeds from sales of investments:
	Fixed maturities	300			267			5			—			572
	Equity securities	18			32			—			—			50
	Other investments	224			157			—			—			381
	Purchases of investments:
	Fixed maturities	(3,062		)	(1,419		)	(7		)	—			(4,488		)
	Equity securities	(15		)	(24		)	(1		)	—			(40		)
	Real estate investments	—			(59		)	—			—			(59		)
	Other investments	(150		)	(59		)	—			—			(209		)
	Net sales (purchases) of short-term securities	(182		)	78			185			—			81
	Securities transactions in course of settlement	59			1			—			—			60
	Other	(155		)	(2		)	—			—			(157		)
Net cash provided by (used in) investing activities	(393		)	302			183			—			92
Cash flows from financing activities
Payment of debt	(500		)	—			—			—			(500		)
Dividends paid to shareholders	—			—			(366		)	—			(366		)
Issuance of common stock — employee share options	—			—			139			—			139
Treasury stock acquired — share repurchase authorization	—			—			(600		)	—			(600		)
Treasury stock acquired — net employee share-based compensation	—			—			(59		)	—			(59		)
Excess tax benefits from share-based payment arrangements	—			—			29			—			29
Capital contributions	500			—			—			(500		)	—
Dividends paid to parent company	(217		)	(850		)	—			1,067			—
Net cash used in financing activities	(217		)	(850		)	(857		)	567			(1,357		)
Effect of exchange rate changes on cash	—			(9		)	—			—			(9		)
Net increase (decrease) in cash	(25		)	4			(1		)	—			(22		)
Cash at beginning of year	177			151			2			—			330
Cash at end of period	$	152		$	155		$	1		$	—		$	308
Supplemental disclosure of cash flow information
Income taxes paid (received)	$	479		$	178		$	(162	)	$	—		$	495
Interest paid	$	36		$	—		$	148		$	—		$	184
(1)     The Travelers Companies, Inc., excluding its subsidiaries.

Basis_of_Presentation_and_Acco2

Basis of Presentation and Accounting Policies (details)	6 Months Ended
	Jun. 30, 2014
	item
Basis of Presentation and Accounting Policies disclosure	'
Number of reportable business segments	3
Number of groups comprising Business Insurance Core	6
Percent of common stock owned, J. Malucelli - Brazilian joint venture	49.50%
Number of reportable business segments that will be impacted by announced realignment	2

Basis_of_Presentation_and_Acco3

Basis of Presentation and Accounting Policies (details) - Dominion (USD $)	Jun. 30, 2014	Dec. 31, 2013	Nov. 01, 2013
			Dominion [Member]
Business Acquisition	'	'	'
Purchase price	'	'	$1,035,000,000
Assets acquired	'	'	3,910,000,000
Liabilities assumed	'	'	2,880,000,000
Intangible assets acquired	'	'	16,000,000
Goodwill acquired	$3,634,000,000	$3,634,000,000	$273,000,000

Segment_Information_details

Segment Information (details) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment reporting information	'		'		'		'
Premiums	$5,928		$5,603		$11,751		$11,120
Net investment income	695		687		1,431		1,357
Fee income	112		82		219		179
Other revenues	34		135		75		169
Operating income	673		816		1,725		1,703
Net realized investment gains	16	[1]	167	[1]	17	[1]	177	[1]
Total revenues	6,785		6,674		13,493		13,002
Net realized investment gains, net of tax	10		109		10		118
Net income	683		925		1,735		1,821
Reportable Segments [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	5,928		5,603		11,751		11,120
Net investment income	695		687		1,431		1,357
Fee income	112		82		219		179
Other revenues	33		134		75		170
Total operating revenues	6,768		6,506		13,476		12,826
Operating income	738		875		1,854		1,825
Reportable Segments [Member] | Business Insurance [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	3,067		3,018		6,083		5,960
Net investment income	496		502		1,026		989
Fee income	111		82		218		179
Other revenues	8		114		16		127
Total operating revenues	3,682		3,716		7,343		7,255
Operating income	409		579		1,062		1,169
Reportable Segments [Member] | Business Insurance [Member] | Workers' compensation [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	923		897		1,831		1,744
Reportable Segments [Member] | Business Insurance [Member] | Automobile [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	473		474		941		949
Reportable Segments [Member] | Business Insurance [Member] | Commercial Property [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	440		418		868		827
Reportable Segments [Member] | Business Insurance [Member] | General Liability [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	457		444		904		881
Reportable Segments [Member] | Business Insurance [Member] | Commercial multi-peril [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	763		776		1,518		1,541
Reportable Segments [Member] | Business Insurance [Member] | Other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	11		9		21		18
Reportable Segments [Member] | Financial, Professional & International Insurance [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	1,088		751		2,133		1,486
Net investment income	105		91		211		183
Fee income	1		'		1		'
Other revenues	8		5		16		10
Total operating revenues	1,202		847		2,361		1,679
Operating income	254		154		449		317
Reportable Segments [Member] | Financial, Professional & International Insurance [Member] | General Liability [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	241		221		478		434
Reportable Segments [Member] | Financial, Professional & International Insurance [Member] | Other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	45		44		89		88
Reportable Segments [Member] | Financial, Professional & International Insurance [Member] | Fidelity and surety [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	238		228		460		448
Reportable Segments [Member] | Financial, Professional & International Insurance [Member] | International [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	564		258		1,106		516
Reportable Segments [Member] | Personal Insurance [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	1,773		1,834		3,535		3,674
Net investment income	94		94		194		185
Other revenues	17		15		43		33
Total operating revenues	1,884		1,943		3,772		3,892
Operating income	75		142		343		339
Reportable Segments [Member] | Personal Insurance [Member] | Automobile [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	821		864		1,636		1,736
Reportable Segments [Member] | Personal Insurance [Member] | Homeowners and other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	952		970		1,899		1,938
Interest Expense & Other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Other revenues	1		1		'		-1
Operating income	-65		-59		-129		-122
After-tax interest expense	$60		$56		$120		$116
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(1) million and $(1) million for the three months ended June 30, 2014 and 2013, respectively, and $(8) million and $(1) million for the six months ended June 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(1) million and $(2) million for the three months ended June 30, 2014 and 2013, respectively, and $(10) million and $(7) million for the six months ended June 30, 2014 and 2013, respectively, were recognized in net realized investment gains. In addition, unrealized gains from other changes in total OTTI of $0 million and $1 million for the three months ended June 30, 2014 and 2013, respectively, and $2 million and $6 million for the six months ended June 30, 2014 and 2013, respectively, were recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income.

Segment_Information_details_As

Segment Information (details) - Assets by Segment (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets by segment	'	'
Total assets	$104,811	$103,812
Reportable Segments [Member]	'	'
Assets by segment	'	'
Total assets	104,274	103,307
Reportable Segments [Member] | Business Insurance [Member]	'	'
Assets by segment	'	'
Total assets	74,470	73,746
Reportable Segments [Member] | Financial, Professional & International Insurance [Member]	'	'
Assets by segment	'	'
Total assets	16,856	16,691
Reportable Segments [Member] | Personal Insurance [Member]	'	'
Assets by segment	'	'
Total assets	12,948	12,870
Interest Expense & Other [Member]	'	'
Assets by segment	'	'
Total assets	$537	$505

Investments_details

Investments (details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Investment disclosure details	'	'
Fixed maturities, amortized cost	$61,841	$62,196
Fixed maturities, at fair value	64,583	63,956
Equity securities, cost	648	686
Equity securities, at fair value	980	943
Continuous unrealized loss position less than 12 months, fair value	3,116	13,836
Continuous unrealized loss position less than 12 months, gross unrealized losses	16	592
Continuous unrealized loss position 12 months or longer, fair value	6,154	875
Continuous unrealized loss position 12 months or longer, gross unrealized losses	177	111
Continuous unrealized loss position, total, fair value	9,270	14,711
Continuous unrealized loss position, total, gross unrealized losses	193	703
Available-for-sale securities for which fair value is less than 80% of amortized cost, 3 months or less	1	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 3 months, 6 months or less	4	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 6 months, 12 months or less	1	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 12 months	2	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, total	8	'
Maxiumum [Member]	'	'
Investment disclosure details	'	'
Unrealized investment losses for securities for which fair value is less than 80% of amortized cost, as a percentage of the combined fixed maturity and equity security portfolios on a pretax basis	1.00%	'
Unrealized investment losses for securities for which fair value is less than 80% of amortized cost, as a percentage of shareholders' equity on an after-tax basis	1.00%	'
Fixed maturities [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	61,841	62,196
Gross unrealized gains	2,933	2,460
Gross unrealized losses	191	700
Fixed maturities, at fair value	64,583	63,956
Continuous unrealized loss position less than 12 months, fair value	2,935	13,636
Continuous unrealized loss position less than 12 months, gross unrealized losses	14	589
Continuous unrealized loss position 12 months or longer, fair value	6,153	875
Continuous unrealized loss position 12 months or longer, gross unrealized losses	177	111
Continuous unrealized loss position, total, fair value	9,088	14,511
Continuous unrealized loss position, total, gross unrealized losses	191	700
Available-for-sale securities for which fair value is less than 80% of amortized cost, 3 months or less	1	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 3 months, 6 months or less	4	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 6 months, 12 months or less	1	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 12 months	2	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, total	8	'
U.S. Treasury securities and obligations of U.S. government and government agencies and authorities [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	2,060	2,288
Gross unrealized gains	40	39
Gross unrealized losses	6	12
Fixed maturities, at fair value	2,094	2,315
Continuous unrealized loss position less than 12 months, fair value	40	433
Continuous unrealized loss position less than 12 months, gross unrealized losses	1	12
Continuous unrealized loss position 12 months or longer, fair value	106	'
Continuous unrealized loss position 12 months or longer, gross unrealized losses	5	'
Continuous unrealized loss position, total, fair value	146	433
Continuous unrealized loss position, total, gross unrealized losses	6	12
Obligations of states, municipalities and political subdivisions [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	33,405	34,488
Gross unrealized gains	1,700	1,436
Gross unrealized losses	80	362
Fixed maturities, at fair value	35,025	35,562
Continuous unrealized loss position less than 12 months, fair value	1,378	4,785
Continuous unrealized loss position less than 12 months, gross unrealized losses	4	298
Continuous unrealized loss position 12 months or longer, fair value	2,750	432
Continuous unrealized loss position 12 months or longer, gross unrealized losses	76	64
Continuous unrealized loss position, total, fair value	4,128	5,217
Continuous unrealized loss position, total, gross unrealized losses	80	362
Obligations of states, municipalities and political subdivisions, pre-refunded [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	8,096	9,074
Gross unrealized gains	359	445
Gross unrealized losses	'	1
Fixed maturities, at fair value	8,455	9,518
Obligations of states, municipalities and political subdivisions, all other (not pre-refunded) [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	25,309	25,414
Gross unrealized gains	1,341	991
Gross unrealized losses	80	361
Fixed maturities, at fair value	26,570	26,044
Debt securities issued by foreign governments [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	2,549	2,552
Gross unrealized gains	37	33
Gross unrealized losses	4	8
Fixed maturities, at fair value	2,582	2,577
Continuous unrealized loss position less than 12 months, fair value	425	907
Continuous unrealized loss position less than 12 months, gross unrealized losses	2	8
Continuous unrealized loss position 12 months or longer, fair value	115	1
Continuous unrealized loss position 12 months or longer, gross unrealized losses	2	'
Continuous unrealized loss position, total, fair value	540	908
Continuous unrealized loss position, total, gross unrealized losses	4	8
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	2,154	2,263
Gross unrealized gains	178	179
Gross unrealized losses	6	18
Fixed maturities, at fair value	2,326	2,424
Continuous unrealized loss position less than 12 months, fair value	77	542
Continuous unrealized loss position less than 12 months, gross unrealized losses	'	17
Continuous unrealized loss position 12 months or longer, fair value	268	21
Continuous unrealized loss position 12 months or longer, gross unrealized losses	6	1
Continuous unrealized loss position, total, fair value	345	563
Continuous unrealized loss position, total, gross unrealized losses	6	18
All other corporate bonds [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	21,541	20,472
Gross unrealized gains	969	767
Gross unrealized losses	95	299
Fixed maturities, at fair value	22,415	20,940
Continuous unrealized loss position less than 12 months, fair value	1,015	6,887
Continuous unrealized loss position less than 12 months, gross unrealized losses	7	253
Continuous unrealized loss position 12 months or longer, fair value	2,914	421
Continuous unrealized loss position 12 months or longer, gross unrealized losses	88	46
Continuous unrealized loss position, total, fair value	3,929	7,308
Continuous unrealized loss position, total, gross unrealized losses	95	299
Other fixed maturities [Member]	'	'
Investment disclosure details	'	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, 3 months or less	1	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 3 months, 6 months or less	4	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 6 months, 12 months or less	1	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 12 months	2	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, total	8	'
Redeemable preferred stock [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	132	133
Gross unrealized gains	9	6
Gross unrealized losses	'	1
Fixed maturities, at fair value	141	138
Continuous unrealized loss position less than 12 months, fair value	'	82
Continuous unrealized loss position less than 12 months, gross unrealized losses	'	1
Continuous unrealized loss position, total, fair value	'	82
Continuous unrealized loss position, total, gross unrealized losses	'	1
Equity securities [Member]	'	'
Investment disclosure details	'	'
Equity securities, cost	648	686
Gross unrealized gains	334	260
Gross unrealized losses	2	3
Equity securities, at fair value	980	943
Continuous unrealized loss position less than 12 months, fair value	181	200
Continuous unrealized loss position less than 12 months, gross unrealized losses	2	3
Continuous unrealized loss position 12 months or longer, fair value	1	'
Continuous unrealized loss position, total, fair value	182	200
Continuous unrealized loss position, total, gross unrealized losses	2	3
Equity securities, common stock [Member]	'	'
Investment disclosure details	'	'
Equity securities, cost	396	385
Gross unrealized gains	303	226
Gross unrealized losses	'	1
Equity securities, at fair value	699	610
Continuous unrealized loss position less than 12 months, fair value	29	53
Continuous unrealized loss position less than 12 months, gross unrealized losses	'	1
Continuous unrealized loss position 12 months or longer, fair value	1	'
Continuous unrealized loss position, total, fair value	30	53
Continuous unrealized loss position, total, gross unrealized losses	'	1
Equity securities, non-redeemable preferred stock [Member]	'	'
Investment disclosure details	'	'
Equity securities, cost	252	301
Gross unrealized gains	31	34
Gross unrealized losses	2	2
Equity securities, at fair value	281	333
Continuous unrealized loss position less than 12 months, fair value	152	147
Continuous unrealized loss position less than 12 months, gross unrealized losses	2	2
Continuous unrealized loss position, total, fair value	152	147
Continuous unrealized loss position, total, gross unrealized losses	$2	$2

Investments_details_Impairment

Investments (details) - Impairment Charges (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Impairment charges	'	'	'	'
Impairment charges	$1	$2	$10	$7
Fixed maturities [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	1	1	4	2
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	1	1	1	2
All other corporate bonds [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	'	'	3	'
Equity securities [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	'	1	5	1
Equity securities, common stock [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	'	1	5	1
Other investments [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	'	'	$1	$4

Investments_details_OTTI_Rollf

Investments (details) - OTTI Rollforward (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Cumulative amount of and the changes during the reporting period in the credit losses 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 [Roll Forward]	'	'	'	'
Cumulative OTTI credit losses recognized for securities held, beginning of year	$111	$126	$118	$127
Additions for OTTI securities where credit losses have been previously recognized	1	1	4	2
Reductions due to sales/defaults of credit-impaired securities	'	'	-3	'
Adjustments to book value of credit-impaired securities due to changes in cash flows	-3	-2	-10	-4
Cumulative OTTI credit losses recognized for securities still held, end of period	109	125	109	125
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member]	'	'	'	'
Cumulative amount of and the changes during the reporting period in the credit losses 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 [Roll Forward]	'	'	'	'
Cumulative OTTI credit losses recognized for securities held, beginning of year	42	55	53	55
Additions for OTTI securities where credit losses have been previously recognized	1	1	1	2
Reductions due to sales/defaults of credit-impaired securities	'	'	-3	'
Adjustments to book value of credit-impaired securities due to changes in cash flows	'	-1	-8	-2
Cumulative OTTI credit losses recognized for securities still held, end of period	43	55	43	55
All other corporate bonds [Member]	'	'	'	'
Cumulative amount of and the changes during the reporting period in the credit losses 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 [Roll Forward]	'	'	'	'
Cumulative OTTI credit losses recognized for securities held, beginning of year	69	71	65	72
Additions for OTTI securities where credit losses have been previously recognized	'	'	3	'
Adjustments to book value of credit-impaired securities due to changes in cash flows	-3	-1	-2	-2
Cumulative OTTI credit losses recognized for securities still held, end of period	$66	$70	$66	$70

Investments_details_Derivative

Investments (details) - Derivatives (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Derivative	'		'		'		'		'
Net realized investment gain (loss)	$16,000,000	[1]	$167,000,000	[1]	$17,000,000	[1]	$177,000,000	[1]	'
Futures [Member] | U.S. Treasury notes contracts [Member]	'		'		'		'		'
Derivative	'		'		'		'		'
Notional value of open contracts	100,000,000		'		100,000,000		'		0
Net realized investment gain (loss)	($1,000,000)		$134,000,000		($200,000)		$115,000,000		'
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(1) million and $(1) million for the three months ended June 30, 2014 and 2013, respectively, and $(8) million and $(1) million for the six months ended June 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(1) million and $(2) million for the three months ended June 30, 2014 and 2013, respectively, and $(10) million and $(7) million for the six months ended June 30, 2014 and 2013, respectively, were recognized in net realized investment gains. In addition, unrealized gains from other changes in total OTTI of $0 million and $1 million for the three months ended June 30, 2014 and 2013, respectively, and $2 million and $6 million for the six months ended June 30, 2014 and 2013, respectively, were recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income.

Fair_Value_Measurements_detail

Fair Value Measurements (details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value Measurements disclosure	'	'
Percent of fixed maturities for which a pricing service estimates fair value	98.00%	98.00%
Fair value of the fixed maturities for which the Company used an internal pricing matrix	$134	$94
Fair value of the fixed maturities for which the Company received a broker quote	130	161
Convertible bonds held containing embedded conversion options that are valued separately from the host bond contract and disclosed in Level 2	$9	$8
Percent of short-term securities for which a pricing service estimates fair value	97.00%	97.00%
Percent of debt, including commercial paper, for which a pricing service estimates fair value	100.00%	100.00%

Fair_Value_Measurements_detail1

Fair Value Measurements (details) - Fair Value Hierarchy (Recurring basis [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	$65,618	$64,952
Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,939	3,066
Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	62,379	61,597
Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	300	289
Fixed maturities [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	64,583	63,956
Fixed maturities [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,098	2,299
Fixed maturities [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	62,221	61,402
Fixed maturities [Member] | Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	264	255
U.S. Treasury securities and obligations of U.S. government and government agencies and authorities [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,094	2,315
U.S. Treasury securities and obligations of U.S. government and government agencies and authorities [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,077	2,298
U.S. Treasury securities and obligations of U.S. government and government agencies and authorities [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	17	17
Obligations of states, municipalities and political subdivisions [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	35,025	35,562
Transfers from Level 1 to Level 2	1	'
Obligations of states, municipalities and political subdivisions [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	'	1
Obligations of states, municipalities and political subdivisions [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	35,012	35,538
Obligations of states, municipalities and political subdivisions [Member] | Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	13	23
Debt securities issued by foreign governments [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,582	2,577
Debt securities issued by foreign governments [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,582	2,577
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,326	2,424
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	2,275	2,415
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member] | Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	51	9
All other corporate bonds [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	22,415	20,940
All other corporate bonds [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	21	'
All other corporate bonds [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	22,203	20,726
All other corporate bonds [Member] | Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	191	214
Redeemable preferred stock [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	141	138
Transfers from Level 1 to Level 2	'	31
Redeemable preferred stock [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	132	129
Redeemable preferred stock [Member] | Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	9	9
Equity securities [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	980	943
Equity securities [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	822	748
Equity securities [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	158	195
Equity securities, common stock [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	699	610
Equity securities, common stock [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	699	610
Equity securities, non-redeemable preferred stock [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	281	333
Transfers from Level 1 to Level 2	4	54
Transfers from Level 2 to Level 1	10	'
Equity securities, non-redeemable preferred stock [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	123	138
Equity securities, non-redeemable preferred stock [Member] | Level 2 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	158	195
Other investments [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	55	53
Other investments [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	19	19
Other investments [Member] | Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	36	34
Investments in various publicly-traded securities, including mutual funds and other small holdings disclosed in Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	19	19
Investments in various publicly-traded securities, including mutual funds and other small holdings disclosed in Level 1 [Member] | Level 1 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	19	19
Investment in non-public common and preferred equity securities where the fair value estimate is determined either internally or by an external fund manager and therefore disclosed in Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	36	34
Investment in non-public common and preferred equity securities where the fair value estimate is determined either internally or by an external fund manager and therefore disclosed in Level 3 [Member] | Level 3 [Member]	'	'
Level within the fair value hierarchy at which the Company's financial assets are measured	'	'
Total invested assets measured on a recurring basis	$36	$34

Fair_Value_Measurements_detail2

Fair Value Measurements (details) - Changes in Level 3 (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Changes in Level 3 fair value category [Roll Forward]	'	'	'
Level 3 fair value category, beginning balance	$304	$289	$284
Level 3 fair value category, total realized and unrealized investment gains (losses) reported in net realized investment gains	1	3	16
Level 3 fair value category, total unrealized investment gains (losses) reported in increases (decreases) in other comprehensive income	1	'	-1
Level 3 fair value category purchases	58	143	180
Level 3 fair value category sales	-1	-1	-58
Level 3 fair value category settlements/maturities	-31	-60	-83
Gross transfers into Level 3	'	'	15
Gross transfers out of Level 3	-32	-74	-64
Level 3 fair value category, ending balance	300	300	289
Fixed maturities [Member]	'	'	'
Changes in Level 3 fair value category [Roll Forward]	'	'	'
Level 3 fair value category, beginning balance	267	255	230
Level 3 fair value category, total realized and unrealized investment gains (losses) reported in net realized investment gains	1	2	4
Level 3 fair value category, total unrealized investment gains (losses) reported in increases (decreases) in other comprehensive income	2	'	-2
Level 3 fair value category purchases	58	142	180
Level 3 fair value category sales	-1	-1	-25
Level 3 fair value category settlements/maturities	-31	-60	-83
Gross transfers into Level 3	'	'	15
Gross transfers out of Level 3	-32	-74	-64
Level 3 fair value category, ending balance	264	264	255
Other investments [Member]	'	'	'
Changes in Level 3 fair value category [Roll Forward]	'	'	'
Level 3 fair value category, beginning balance	37	34	54
Level 3 fair value category, total realized and unrealized investment gains (losses) reported in net realized investment gains	'	1	12
Level 3 fair value category, total unrealized investment gains (losses) reported in increases (decreases) in other comprehensive income	-1	'	1
Level 3 fair value category purchases	'	1	'
Level 3 fair value category sales	'	'	-33
Level 3 fair value category, ending balance	$36	$36	$34

Fair_Value_Measurements_Footno

Fair Value Measurements Footnote (details) - Financial Instruments (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Financial Instruments	'	'
Short-term securities	$3,818	$3,882
Fair Value [Member]	'	'
Financial Instruments	'	'
Short-term securities	3,818	3,882
Debt	7,452	7,123
Commercial paper	100	100
Fair Value [Member] | Level 1 [Member]	'	'
Financial Instruments	'	'
Short-term securities	1,290	1,608
Fair Value [Member] | Level 2 [Member]	'	'
Financial Instruments	'	'
Short-term securities	2,477	2,215
Debt	7,452	7,123
Commercial paper	100	100
Fair Value [Member] | Level 3 [Member]	'	'
Financial Instruments	'	'
Short-term securities	51	59
Carrying Value [Member]	'	'
Financial Instruments	'	'
Short-term securities	3,818	3,882
Debt	6,247	6,246
Commercial paper	$100	$100

Goodwill_details

Goodwill (details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill and Other Intangible Assets disclosure	'	'
Intangible assets not subject to amortization	$217	$217
Total other intangible assets, gross carrying amount	878	878
Total other intangible assets, accumulated amortization	550	527
Total other intangible assets, net	$328	$351

Goodwill_details_Goodwill_by_S

Goodwill (details) - Goodwill by Segment (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill by segment	'	'
Goodwill	$3,634	$3,634
Reportable Segments [Member] | Business Insurance [Member]	'	'
Goodwill by segment	'	'
Goodwill	2,168	2,168
Reportable Segments [Member] | Financial, Professional & International Insurance [Member]	'	'
Goodwill by segment	'	'
Goodwill	826	826
Reportable Segments [Member] | Personal Insurance [Member]	'	'
Goodwill by segment	'	'
Goodwill	613	613
Other [Member]	'	'
Goodwill by segment	'	'
Goodwill	$27	$27

Goodwill_details_Other_Intangi

Goodwill (details) - Other Intangible Assets (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Other intangible assets by major asset class	'	'	'	'	'
Intangible assets subject to amortization, gross carrying amount	$661	'	$661	'	$661
Intangible assets subject to amortization, accumulated amortization	550	'	550	'	527
Intangible assets subject to amortization, net	111	'	111	'	134
Amortization expense for other intangible assets	11	12	23	23	'
Estimated intangible asset amortization expense, remainder of 2014	24	'	24	'	'
Estimated intangible asset amortization expense, 2015	27	'	27	'	'
Estimated intangible asset amortization expense, 2016	10	'	10	'	'
Estimated intangible asset amortization expense, 2017	9	'	9	'	'
Estimated intangible asset amortization expense, 2018	8	'	8	'	'
Customer-related [Member]	'	'	'	'	'
Other intangible assets by major asset class	'	'	'	'	'
Intangible assets subject to amortization, gross carrying amount	460	'	460	'	460
Intangible assets subject to amortization, accumulated amortization	429	'	429	'	414
Intangible assets subject to amortization, net	31	'	31	'	46
Amortization expense for other intangible assets	7	8	15	15	'
Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles [Member]	'	'	'	'	'
Other intangible assets by major asset class	'	'	'	'	'
Intangible assets subject to amortization, gross carrying amount	201	'	201	'	201
Intangible assets subject to amortization, accumulated amortization	121	'	121	'	113
Intangible assets subject to amortization, net	80	'	80	'	88
Amortization expense for other intangible assets	$4	$4	$8	$8	'

Other_Comprehensive_Income_and2

Other Comprehensive Income and Accumulated Other Comprehensive Income (details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated other comprehensive income [Roll Forward]	'	'	'	'
Accumulated other comprehensive income, net of tax, balance, beginning of year	'	'	$810	$2,236
Other comprehensive income before reclassifications	'	'	751	'
Amounts reclassified from accumulated other comprehensive income	'	'	1	'
Other comprehensive income (loss), net of taxes	435	-1,206	752	-1,516
Accumulated other comprehensive income, net of tax, balance, end of period	1,562	720	1,562	720
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	518	-1,790	1,055	-2,166
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	1	-5	3	4
Net changes in benefit plan assets and obligations	15	26	30	54
Net changes in unrealized foreign currency translation	97	-73	54	-169
Other comprehensive income (loss) before income taxes	631	-1,842	1,142	-2,277
Income tax expense (benefit), other comprehensive income (loss)	196	-636	390	-761
Changes in Net Unrealized Gains on Investment Securities Having No Credit Losses Recognized in the Consolidated Statement of Income [Member]	'	'	'	'
Accumulated other comprehensive income [Roll Forward]	'	'	'	'
Accumulated other comprehensive income, net of tax, balance, beginning of year	'	'	1,125	'
Other comprehensive income before reclassifications	'	'	708	'
Amounts reclassified from accumulated other comprehensive income	'	'	-19	'
Other comprehensive income (loss), net of taxes	338	-1,169	689	-1,414
Accumulated other comprehensive income, net of tax, balance, end of period	1,814	'	1,814	'
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	518	-1,790	1,055	-2,166
Income tax expense (benefit), other comprehensive income (loss)	180	-621	366	-752
Changes in Net Unrealized Gains on Investment Securities Having Credit Losses Recognized in the Consolidated Statement of Income [Member]	'	'	'	'
Accumulated other comprehensive income [Roll Forward]	'	'	'	'
Accumulated other comprehensive income, net of tax, balance, beginning of year	'	'	197	'
Amounts reclassified from accumulated other comprehensive income	'	'	2	'
Other comprehensive income (loss), net of taxes	1	-3	2	3
Accumulated other comprehensive income, net of tax, balance, end of period	199	'	199	'
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	1	-5	3	4
Income tax expense (benefit), other comprehensive income (loss)	'	-2	1	1
Net Benefit Plan Assets and Obligations Recognized in Shareholders' Equity [Member]	'	'	'	'
Accumulated other comprehensive income [Roll Forward]	'	'	'	'
Accumulated other comprehensive income, net of tax, balance, beginning of year	'	'	-431	'
Amounts reclassified from accumulated other comprehensive income	'	'	18	'
Other comprehensive income (loss), net of taxes	10	17	18	35
Accumulated other comprehensive income, net of tax, balance, end of period	-413	'	-413	'
Net changes in benefit plan assets and obligations	15	26	30	54
Income tax expense (benefit), other comprehensive income (loss)	5	9	12	19
Net Unrealized Foreign Currency Translation [Member]	'	'	'	'
Accumulated other comprehensive income [Roll Forward]	'	'	'	'
Accumulated other comprehensive income, net of tax, balance, beginning of year	'	'	-81	'
Other comprehensive income before reclassifications	'	'	43	'
Other comprehensive income (loss), net of taxes	86	-51	43	-140
Accumulated other comprehensive income, net of tax, balance, end of period	-38	'	-38	'
Net changes in unrealized foreign currency translation	97	-73	54	-169
Income tax expense (benefit), other comprehensive income (loss)	$11	($22)	$11	($29)

Other_Comprehensive_Income_and3

Other Comprehensive Income and Accumulated Other Comprehensive Income (details) - Reclassifications (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Reclassification adjustment impacting net realized investment gains on the income statement	($16)	[1]	($167)	[1]	($17)	[1]	($177)	[1]
Reclassification adjustment impacting general and administrative expense on the income statement	1,001		931		1,882		1,846
Total reclassifications	-901		-1,177		-2,371		-2,397
Income tax (expense) benefit	-218		-252		-636		-576
Amounts reclassified from accumulated other comprehensive income, net of taxes	-683		-925		-1,735		-1,821
Reclassification out of Accumulated Other Comprehensive Income [Member]	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Total reclassifications	-8		-8		5		'
Income tax (expense) benefit	-2		-3		4		1
Amounts reclassified from accumulated other comprehensive income, net of taxes	-6		-5		1		-1
Changes in Net Unrealized Gains on Investment Securities Having No Credit Losses Recognized in the Consolidated Statement of Income [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Reclassification adjustment impacting net realized investment gains on the income statement	-24		-34		-29		-51
Income tax (expense) benefit	-8		-12		-10		-18
Amounts reclassified from accumulated other comprehensive income, net of taxes	-16		-22		-19		-33
Changes in Net Unrealized Gains on Investment Securities Having Credit Losses Recognized in the Consolidated Statement of Income [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Reclassification adjustment impacting net realized investment gains on the income statement	1		1		4		2
Income tax (expense) benefit	1		1		2		1
Amounts reclassified from accumulated other comprehensive income, net of taxes	'		'		2		1
Net Benefit Plan Assets and Obligations Recognized in Shareholders' Equity [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Reclassification adjustment impacting general and administrative expense on the income statement	15		25		30		52
Income tax (expense) benefit	5		8		12		18
Amounts reclassified from accumulated other comprehensive income, net of taxes	10		17		18		34
Net Unrealized Foreign Currency Translation [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Reclassification adjustment impacting net realized investment gains on the income statement	'		'		'		-3
Amounts reclassified from accumulated other comprehensive income, net of taxes	'		'		'		($3)
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(1) million and $(1) million for the three months ended June 30, 2014 and 2013, respectively, and $(8) million and $(1) million for the six months ended June 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(1) million and $(2) million for the three months ended June 30, 2014 and 2013, respectively, and $(10) million and $(7) million for the six months ended June 30, 2014 and 2013, respectively, were recognized in net realized investment gains. In addition, unrealized gains from other changes in total OTTI of $0 million and $1 million for the three months ended June 30, 2014 and 2013, respectively, and $2 million and $6 million for the six months ended June 30, 2014 and 2013, respectively, were recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income.

Common_Share_Repurchases_detai

Common Share Repurchases (details) (Board of Directors Approved Repurchase Authorizations [Member], USD $)	3 Months Ended	6 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014
Board of Directors Approved Repurchase Authorizations [Member]	'	'
Repurchase activity	'	'
Number of shares repurchased (in shares)	9.5	17.3
Cost of shares repurchased	$875,000,000	$1,530,000,000
Average cost per share repurchased	$92.67	$88.27
Remaining capacity under share repurchase authorization	$3,230,000,000	$3,230,000,000

Earnings_per_Share_details

Earnings per Share (details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings per Share disclosure	'	'	'	'
Net income	$683	$925	$1,735	$1,821
Participating share-based awards - allocated income	-5	-7	-12	-14
Net income available to common shareholders -- basic	678	918	1,723	1,807
Net income available to common shareholders -- diluted	$678	$918	$1,723	$1,807
Weighted average shares outstanding, basic	343	375.9	346.9	376.8
Weighted average effects of dilutive securities, stock options and performance shares (in shares)	3.7	4	3.6	4
Weighted average shares outstanding, diluted	346.7	379.9	350.5	380.8
Net income per common share, basic	$1.98	$2.44	$4.97	$4.80
Net income per common share, diluted	$1.95	$2.41	$4.91	$4.75

ShareBased_Incentive_Compensat2

Share-Based Incentive Compensation (details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	27-May-14
Share-Based Incentive Compensation disclosure	'	'	'	'	'	'
Stock options vested at end of period, number (in shares)	7,967,953	'	7,967,953	'	'	'
Stock options vested at end of period, weighted average exercise price (per share)	$58.07	'	$58.07	'	'	'
Stock options vested at end of period, weighted average contractual life remaining	'	'	'6 years 1 month 6 days	'	'	'
Stock options vested at end of period, aggregate intrinsic value	$287	'	$287	'	'	'
Stock options exercisable at end of period, number (in shares)	5,137,812	'	5,137,812	'	'	'
Stock options exercisable at end of period, weighted average exercise price (per share)	$50.32	'	$50.32	'	'	'
Stock options exercisable at end of period, weighted average contractual life remaining	'	'	'4 years 8 months 12 days	'	'	'
Stock options exercisable at end of period, aggregate intrinsic value	225	'	225	'	'	'
Total compensation cost recognized in earnings for all share-based incentive compensation awards	31	29	75	70	'	'
Tax benefits recognized in earnings related to compensation costs	11	10	26	24	'	'
Total unrecognized compensation cost related to all nonvested share-based incentive compensation awards	$180	'	$180	'	$120	'
Weighted-average period of recognition for unrecognized compensation cost (in years)	'	'	'2 years 0 months 0 days	'	'1 year 8 months 12 days	'
Number of shares initially available for issuance under the 2014 Incentive Plan	'	'	'	'	'	10,000,000

Pension_Plans_Retirement_Benef2

Pension Plans, Retirement Benefits and Savings Plans (details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension Plans [Member]	'	'	'	'
Defined benefit plan disclosure	'	'	'	'
Service cost	$28	$30	$55	$59
Interest cost on benefit obligation	37	33	75	66
Expected return on plan assets	-55	-52	-109	-104
Amortization of unrecognized net actuarial (gain) loss	16	26	32	53
Net periodic benefit cost	26	37	53	74
Postretirement Benefit Plans [Member]	'	'	'	'
Defined benefit plan disclosure	'	'	'	'
Interest cost on benefit obligation	3	2	5	4
Net periodic benefit cost, amortization of unrecognized prior service benefit	'	-1	-1	-1
Amortization of unrecognized net actuarial (gain) loss	-1	'	-1	'
Net periodic benefit cost	$2	$1	$3	$3

Contingencies_Commitments_and_1

Contingencies, Commitments and Guarantees (details) - Commitments (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Billions, unless otherwise specified
Contingencies and Commitments disclosure	'	'
Unfunded commitments to private equity limited partnerships and real estate partnerships	$1.59	$1.52

Contingencies_Commitments_and_2

Contingencies, Commitments and Guarantees (details) - Loss Contingencies (USD $)	7 Months Ended		1 Months Ended
In Millions, unless otherwise specified	Apr. 30, 2002	Mar. 22, 2010	Nov. 30, 2003	31-May-04
	item	item	Statutory and Hawaii Actions [Member]	Common Law Claims [Member]
			Maxiumum [Member]	Maxiumum [Member]
Loss Contingencies	'	'	'	'
Number of purported class action suits filed against TPC and other insurers in state court in West Virginia relative to asbestos direct action litigation	2	'	'	'
Lump-sum payment included in settlement	'	'	$412	$90
Number of remaining objectors to which the notice of the 1986 Orders were deemed insufficient to bar contribution claims against TPC	'	1	'	'

Contingencies_Commitments_and_3

Contingencies, Commitments and Guarantees (details) - Gain Contingencies (United States Fidelity & Guaranty Company v. American Re-Insurance Company, et al. [Member], USD $)	0 Months Ended	44 Months Ended
In Millions, unless otherwise specified	Oct. 25, 2010	Jun. 30, 2014	Nov. 30, 2013	Feb. 07, 2013
	item		item	item
United States Fidelity & Guaranty Company v. American Re-Insurance Company, et al. [Member]	'	'	'	'
Gain Contingencies	'	'	'	'
Number of other reinsurers beside American Re against which judgment was entered in a reinsurance dispute	3	'	'	'
Total settlement amount	$420	$477	'	'
Interest amount included in settlement award	169	239	'	'
Initial settement amount	$251	$238	'	'
Interest rate accruing on judgment not yet paid	9.00%	9.00%	'	'
Number of discrete issues modified in part by the summary judgment in reinsurance dispute	'	'	'	2
Number of reinsurers with whom the Company has reached a settlement agreeement	'	'	1	'

Contingencies_Commitments_and_4

Contingencies, Commitments and Guarantees (details) - Guarantees (USD $)	Jun. 30, 2014
In Millions, unless otherwise specified
Guarantees of certain investments and third-party loans [Member]	'
Guarantor obligations	'
Maximum amount of contingent obligation	$150
Amount indemnified by a third party	75
Guarantees of certain insurance policy obligations [Member]	'
Guarantor obligations	'
Maximum amount of contingent obligation	480
Amount indemnified by a third party	480
Indemnifications related to the sale of businesses [Member]	'
Guarantor obligations	'
Maximum amount of contingent obligation	467
Amount recognized on balance sheet for contingent obligation	$9

Consolidating_Financial_Statem2

Consolidating Financial Statements (Unaudited) (details) (USD $)	Jun. 30, 2014
In Millions, unless otherwise specified
Consolidating Financial Statements of The Travelers Companies, Inc. and Subsidiaries (Unaudited) disclosure	'
Amount of certain debt obligations of TPC that are unconditionally guaranteed by The Travelers Companies, Inc.	$700

Consolidating_Financial_Statem3

Consolidating Financial Statements (details) - Consolidating Statement of Income (Unaudited) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Consolidating Statement of Income	'		'		'		'
Premiums	$5,928		$5,603		$11,751		$11,120
Net investment income	695		687		1,431		1,357
Fee income	112		82		219		179
Net realized investment gains	16	[1]	167	[1]	17	[1]	177	[1]
Other revenues	34		135		75		169
Total revenues	6,785		6,674		13,493		13,002
Claims and claim adjustment expenses	3,826		3,530		7,141		6,683
Amortization of deferred acquisition costs	965		950		1,915		1,898
General and administrative expenses	1,001		931		1,882		1,846
Interest expense	92		86		184		178
Total claims and expenses	5,884		5,497		11,122		10,605
Income before income taxes	901		1,177		2,371		2,397
Income tax expense (benefit)	218		252		636		576
Net income	683		925		1,735		1,821
Total other-than-temporary impairment gains (losses)	-1		-1		-8		-1
Other-than-temporary impairment losses recognized in net realized investment gains (losses)	-1		-2		-10		-7
Other-than-temporary impairment gains recognized in other comprehensive income	0		1		2		6
Reportable Legal Entities [Member] | TPC [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Premiums	4,020		3,804		7,964		7,545
Net investment income	472		457		972		912
Fee income	111		82		218		178
Net realized investment gains	5		124		6		117
Other revenues	32		103		65		132
Total revenues	4,640		4,570		9,225		8,884
Claims and claim adjustment expenses	2,569		2,339		4,790		4,470
Amortization of deferred acquisition costs	650		635		1,285		1,272
General and administrative expenses	697		639		1,310		1,269
Interest expense	12		12		24		29
Total claims and expenses	3,928		3,625		7,409		7,040
Income before income taxes	712		945		1,816		1,844
Income tax expense (benefit)	186		203		507		452
Net income	526		742		1,309		1,392
Total other-than-temporary impairment gains (losses)	-1		-1		-3		-4
Other-than-temporary impairment losses recognized in net realized investment gains (losses)	-1		-1		-5		-5
Other-than-temporary impairment gains recognized in other comprehensive income	'		'		2		1
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Premiums	1,908		1,799		3,787		3,575
Net investment income	221		229		456		442
Fee income	1		'		1		1
Net realized investment gains	11		43		9		59
Other revenues	2		32		10		37
Total revenues	2,143		2,103		4,263		4,114
Claims and claim adjustment expenses	1,257		1,191		2,351		2,213
Amortization of deferred acquisition costs	315		315		630		626
General and administrative expenses	300		289		565		575
Total claims and expenses	1,872		1,795		3,546		3,414
Income before income taxes	271		308		717		700
Income tax expense (benefit)	60		77		185		176
Net income	211		231		532		524
Total other-than-temporary impairment gains (losses)	'		'		-5		3
Other-than-temporary impairment losses recognized in net realized investment gains (losses)	'		-1		-5		-2
Other-than-temporary impairment gains recognized in other comprehensive income	'		1		'		5
Reportable Legal Entities [Member] | Travelers [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Net investment income	2		1		3		3
Net realized investment gains	'		'		2		1
Total revenues	2		1		5		4
General and administrative expenses	4		3		7		2
Interest expense	80		74		160		149
Total claims and expenses	84		77		167		151
Income before income taxes	-82		-76		-162		-147
Income tax expense (benefit)	-28		-28		-56		-52
Net income of subsidiaries	737		973		1,841		1,916
Net income	683		925		1,735		1,821
Eliminations [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Net income of subsidiaries	-737		-973		-1,841		-1,916
Net income	($737)		($973)		($1,841)		($1,916)
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(1) million and $(1) million for the three months ended June 30, 2014 and 2013, respectively, and $(8) million and $(1) million for the six months ended June 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(1) million and $(2) million for the three months ended June 30, 2014 and 2013, respectively, and $(10) million and $(7) million for the six months ended June 30, 2014 and 2013, respectively, were recognized in net realized investment gains. In addition, unrealized gains from other changes in total OTTI of $0 million and $1 million for the three months ended June 30, 2014 and 2013, respectively, and $2 million and $6 million for the six months ended June 30, 2014 and 2013, respectively, were recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income.

Consolidating_Financial_Statem4

Consolidating Financial Statements (details) - Consolidated Statement of Comprehensive Income (Loss) (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidating Statement of Comprehensive Income (Loss)	'	'	'	'
Net income	$683	$925	$1,735	$1,821
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	518	-1,790	1,055	-2,166
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	1	-5	3	4
Net changes in benefit plan assets and obligations	15	26	30	54
Net changes in unrealized foreign currency translation	97	-73	54	-169
Other comprehensive income (loss) before income taxes	631	-1,842	1,142	-2,277
Income tax expense (benefit)	196	-636	390	-761
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	435	-1,206	752	-1,516
Other comprehensive income (loss), net of taxes	435	-1,206	752	-1,516
Comprehensive income (loss)	1,118	-281	2,487	305
Reportable Legal Entities [Member] | TPC [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income (Loss)	'	'	'	'
Net income	526	742	1,309	1,392
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	359	-1,282	750	-1,597
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	2	-2	9	5
Net changes in benefit plan assets and obligations	'	'	'	1
Net changes in unrealized foreign currency translation	51	-51	26	-61
Other comprehensive income (loss) before income taxes	412	-1,335	785	-1,652
Income tax expense (benefit)	129	-462	272	-570
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	283	-873	513	-1,082
Other comprehensive income (loss), net of taxes	283	-873	513	-1,082
Comprehensive income (loss)	809	-131	1,822	310
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income (Loss)	'	'	'	'
Net income	211	231	532	524
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	155	-509	301	-576
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	-1	-3	-6	-1
Net changes in benefit plan assets and obligations	'	1	'	3
Net changes in unrealized foreign currency translation	46	-22	28	-108
Other comprehensive income (loss) before income taxes	200	-533	323	-682
Income tax expense (benefit)	61	-183	106	-211
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	139	-350	217	-471
Other comprehensive income (loss), net of taxes	139	-350	217	-471
Comprehensive income (loss)	350	-119	749	53
Reportable Legal Entities [Member] | Travelers [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income (Loss)	'	'	'	'
Net income	683	925	1,735	1,821
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	4	1	4	7
Net changes in benefit plan assets and obligations	15	25	30	50
Other comprehensive income (loss) before income taxes	19	26	34	57
Income tax expense (benefit)	6	9	12	20
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	13	17	22	37
Other comprehensive income (loss) of subsidiaries	422	-1,223	730	-1,553
Other comprehensive income (loss), net of taxes	435	-1,206	752	-1,516
Comprehensive income (loss)	1,118	-281	2,487	305
Eliminations [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income (Loss)	'	'	'	'
Net income	-737	-973	-1,841	-1,916
Other comprehensive income (loss) of subsidiaries	-422	1,223	-730	1,553
Other comprehensive income (loss), net of taxes	-422	1,223	-730	1,553
Comprehensive income (loss)	($1,159)	$250	($2,571)	($363)

Consolidating_Financial_Statem5

Consolidating Financial Statements (details) - Consolidating Balance Sheet (Unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	$64,583	$63,956	'	'
Equity securities, available for sale, at fair value	980	943	'	'
Real estate investments	954	938	'	'
Short-term securities	3,818	3,882	'	'
Other investments	3,606	3,441	'	'
Total investments	73,941	73,160	'	'
Cash	311	294	308	330
Investment income accrued	710	734	'	'
Premiums receivable	6,589	6,125	'	'
Reinsurance recoverables	9,508	9,713	'	'
Ceded unearned premiums	762	801	'	'
Deferred acquisition costs	1,879	1,804	'	'
Deferred taxes	'	303	'	'
Contractholder receivables	4,371	4,328	'	'
Goodwill	3,634	3,634	'	'
Other intangible assets	328	351	'	'
Other assets	2,778	2,565	'	'
Total assets	104,811	103,812	'	'
Claims and claim adjustment expense reserves	50,856	50,895	'	'
Unearned premium reserves	12,089	11,850	'	'
Contractholder payables	4,371	4,328	'	'
Payables for reinsurance premiums	397	298	'	'
Deferred taxes	239	'	'	'
Debt	6,347	6,346	'	'
Other liabilities	4,980	5,299	'	'
Total liabilities	79,279	79,016	'	'
Common stock	21,694	21,500	21,367	21,161
Retained earnings	25,662	24,291	22,806	21,352
Accumulated other comprehensive income	1,562	810	720	2,236
Treasury stock, at cost	-23,386	-21,805	-20,003	-19,344
Total shareholders' equity	25,532	24,796	24,890	'
Total liabilities and shareholders' equity	104,811	103,812	'	'
Fixed maturities, available for sale, amortized cost	61,841	62,196	'	'
Equity securities, available for sale, cost	648	686	'	'
Common stock, shares authorized	1,750	1,750	'	'
Common stock, shares issued	339	353.5	'	'
Common stock, shares outstanding	339	353.5	373.5	377.4
Treasury stock, at cost, shares	419.5	401.5	'	'
Reportable Legal Entities [Member] | TPC [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	44,292	43,720	'	'
Equity securities, available for sale, at fair value	302	329	'	'
Real estate investments	55	33	'	'
Short-term securities	1,516	1,867	'	'
Other investments	2,607	2,450	'	'
Total investments	48,772	48,399	'	'
Cash	167	137	152	177
Investment income accrued	483	499	'	'
Premiums receivable	4,400	4,124	'	'
Reinsurance recoverables	6,250	6,292	'	'
Ceded unearned premiums	637	712	'	'
Deferred acquisition costs	1,621	1,570	'	'
Deferred taxes	'	279	'	'
Contractholder receivables	3,264	3,179	'	'
Goodwill	2,619	2,619	'	'
Other intangible assets	234	250	'	'
Other assets	2,180	2,010	'	'
Total assets	70,627	70,070	'	'
Claims and claim adjustment expense reserves	33,569	33,506	'	'
Unearned premium reserves	8,301	8,188	'	'
Contractholder payables	3,264	3,179	'	'
Payables for reinsurance premiums	224	127	'	'
Deferred taxes	109	'	'	'
Debt	692	692	'	'
Other liabilities	3,899	4,109	'	'
Total liabilities	50,058	49,801	'	'
Additional paid-in capital	11,634	11,634	'	'
Retained earnings	7,655	7,868	'	'
Accumulated other comprehensive income	1,280	767	'	'
Total shareholders' equity	20,569	20,269	'	'
Total liabilities and shareholders' equity	70,627	70,070	'	'
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	20,251	20,199	'	'
Equity securities, available for sale, at fair value	541	484	'	'
Real estate investments	899	905	'	'
Short-term securities	539	492	'	'
Other investments	998	990	'	'
Total investments	23,228	23,070	'	'
Cash	143	154	155	151
Investment income accrued	223	231	'	'
Premiums receivable	2,189	2,001	'	'
Reinsurance recoverables	3,258	3,421	'	'
Ceded unearned premiums	125	89	'	'
Deferred acquisition costs	258	234	'	'
Deferred taxes	'	86	'	'
Contractholder receivables	1,107	1,149	'	'
Goodwill	1,015	1,015	'	'
Other intangible assets	94	101	'	'
Other assets	90	357	'	'
Total assets	31,730	31,908	'	'
Claims and claim adjustment expense reserves	17,287	17,389	'	'
Unearned premium reserves	3,788	3,662	'	'
Contractholder payables	1,107	1,149	'	'
Payables for reinsurance premiums	173	171	'	'
Deferred taxes	73	'	'	'
Other liabilities	753	1,180	'	'
Total liabilities	23,181	23,551	'	'
Common stock	390	390	'	'
Additional paid-in capital	6,502	6,502	'	'
Retained earnings	1,017	1,042	'	'
Accumulated other comprehensive income	640	423	'	'
Total shareholders' equity	8,549	8,357	'	'
Total liabilities and shareholders' equity	31,730	31,908	'	'
Reportable Legal Entities [Member] | Travelers [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	40	37	'	'
Equity securities, available for sale, at fair value	137	130	'	'
Short-term securities	1,763	1,523	'	'
Other investments	1	1	'	'
Total investments	1,941	1,691	'	'
Cash	1	3	1	2
Investment income accrued	4	4	'	'
Deferred taxes	'	-62	'	'
Investment in subsidiaries	29,105	28,616	'	'
Other assets	508	198	'	'
Total assets	31,559	30,450	'	'
Deferred taxes	57	'	'	'
Debt	5,655	5,654	'	'
Other liabilities	328	10	'	'
Total liabilities	6,040	5,664	'	'
Common stock	21,694	21,500	'	'
Retained earnings	25,649	24,281	'	'
Accumulated other comprehensive income	1,562	810	'	'
Treasury stock, at cost	-23,386	-21,805	'	'
Total shareholders' equity	25,519	24,786	'	'
Total liabilities and shareholders' equity	31,559	30,450	'	'
Eliminations [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Investment in subsidiaries	-29,105	-28,616	'	'
Total assets	-29,105	-28,616	'	'
Common stock	-390	-390	'	'
Additional paid-in capital	-18,136	-18,136	'	'
Retained earnings	-8,659	-8,900	'	'
Accumulated other comprehensive income	-1,920	-1,190	'	'
Total shareholders' equity	-29,105	-28,616	'	'
Total liabilities and shareholders' equity	($29,105)	($28,616)	'	'

Consolidating_Financial_Statem6

Consolidating Financial Statements (details) - Consolidating Statement of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Consolidating Statement of Cash Flows	'	'
Net income	$1,735	$1,821
Net adjustments to reconcile net income to net cash provided by operating activities	-407	-569
Net cash provided by operating activities	1,328	1,252
Proceeds from maturities of fixed maturities	4,915	3,901
Proceeds from sales of investments, fixed maturities	785	572
Proceeds from sales of investments, equity securities	95	50
Proceeds from sales of investments, real estate investments	5	'
Proceeds from sales of investments, other investments	338	381
Purchases of investments, fixed maturities	-5,449	-4,488
Purchases of investments, equity securities	-40	-40
Purchases of investments, real estate investments	-36	-59
Purchases of investments, other investments	-226	-209
Net sales (purchases) of short-term securities	60	81
Securities transactions in course of settlement	204	60
Acquisition, net of cash acquired	-12	'
Other investing activities	-152	-157
Net cash provided by investing activities	487	92
Payment of debt	'	-500
Dividends paid to shareholders	-365	-366
Issuance of common stock - employee share options	122	139
Treasury stock acquired - share repurchase authorization	-1,525	-600
Treasury stock acquired - net employee share-based compensation	-55	-59
Excess tax benefits from share-based payment arrangements	24	29
Net cash used in financing activities	-1,799	-1,357
Effect of exchange rate changes on cash	1	-9
Net increase (decrease) in cash	17	-22
Cash at beginning of year	294	330
Cash at end of period	311	308
Income taxes paid (received)	727	495
Interest paid	183	184
Reportable Legal Entities [Member] | TPC [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	1,309	1,392
Net adjustments to reconcile net income to net cash provided by operating activities	-154	-807
Net cash provided by operating activities	1,155	585
Proceeds from maturities of fixed maturities	3,005	2,570
Proceeds from sales of investments, fixed maturities	415	300
Proceeds from sales of investments, equity securities	57	18
Proceeds from sales of investments, other investments	196	224
Purchases of investments, fixed maturities	-3,399	-3,062
Purchases of investments, equity securities	-3	-15
Purchases of investments, real estate investments	-21	'
Purchases of investments, other investments	-154	-150
Net sales (purchases) of short-term securities	347	-182
Securities transactions in course of settlement	113	59
Acquisition, net of cash acquired	-9	'
Other investing activities	-147	-155
Net cash provided by investing activities	400	-393
Payment of debt	'	-500
Capital contributions	'	500
Dividends paid to parent company	-1,525	-217
Net cash used in financing activities	-1,525	-217
Net increase (decrease) in cash	30	-25
Cash at beginning of year	137	177
Cash at end of period	167	152
Income taxes paid (received)	570	479
Interest paid	24	36
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	532	524
Net adjustments to reconcile net income to net cash provided by operating activities	-317	37
Net cash provided by operating activities	215	561
Proceeds from maturities of fixed maturities	1,909	1,330
Proceeds from sales of investments, fixed maturities	369	267
Proceeds from sales of investments, equity securities	34	32
Proceeds from sales of investments, real estate investments	5	'
Proceeds from sales of investments, other investments	142	157
Purchases of investments, fixed maturities	-2,046	-1,419
Purchases of investments, equity securities	-32	-24
Purchases of investments, real estate investments	-15	-59
Purchases of investments, other investments	-72	-59
Net sales (purchases) of short-term securities	-47	78
Securities transactions in course of settlement	91	1
Acquisition, net of cash acquired	-3	'
Other investing activities	-5	-2
Net cash provided by investing activities	330	302
Dividends paid to parent company	-557	-850
Net cash used in financing activities	-557	-850
Effect of exchange rate changes on cash	1	-9
Net increase (decrease) in cash	-11	4
Cash at beginning of year	154	151
Cash at end of period	143	155
Income taxes paid (received)	205	178
Reportable Legal Entities [Member] | Travelers [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	1,735	1,821
Net adjustments to reconcile net income to net cash provided by operating activities	305	-1,148
Net cash provided by operating activities	2,040	673
Proceeds from maturities of fixed maturities	1	1
Proceeds from sales of investments, fixed maturities	1	5
Proceeds from sales of investments, equity securities	4	'
Purchases of investments, fixed maturities	-4	-7
Purchases of investments, equity securities	-5	-1
Net sales (purchases) of short-term securities	-240	185
Net cash provided by investing activities	-243	183
Dividends paid to shareholders	-365	-366
Issuance of common stock - employee share options	122	139
Treasury stock acquired - share repurchase authorization	-1,525	-600
Treasury stock acquired - net employee share-based compensation	-55	-59
Excess tax benefits from share-based payment arrangements	24	29
Net cash used in financing activities	-1,799	-857
Net increase (decrease) in cash	-2	-1
Cash at beginning of year	3	2
Cash at end of period	1	1
Income taxes paid (received)	-48	-162
Interest paid	159	148
Eliminations [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	-1,841	-1,916
Net adjustments to reconcile net income to net cash provided by operating activities	-241	1,349
Net cash provided by operating activities	-2,082	-567
Capital contributions	'	-500
Dividends paid to parent company	2,082	1,067
Net cash used in financing activities	$2,082	$567