The Travelers Companies, Inc. (TRV) 10-Q 21 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 17, 2014
Entity [Domain]	'	'
Registrant name	'Travelers Companies, Inc.	'
Central index key	'0000086312	'
Document type	'10-Q	'
Document period end date	30-Sep-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	'	331,396,299
Document fiscal year focus	'2014	'
Document fiscal period focus	'Q3	'

Consolidated_Statement_of_Inco

Consolidated Statement of Income (Unaudited) (USD $)	3 Months Ended				9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Revenues	'		'		'		'
Premiums	$5,983		$5,666		$17,734		$16,786
Net investment income	719		657		2,150		2,014
Fee income	110		107		329		286
Net realized investment gains (losses)	40	[1]	-22	[1]	57	[1]	155	[1]
Other revenues	34		44		109		213
Total revenues	6,886		6,452		20,379		19,454
Claims and expenses	'		'		'		'
Claims and claim adjustment expenses	3,520		3,297		10,661		9,980
Amortization of deferred acquisition costs	984		953		2,899		2,851
General and administrative expenses	1,031		934		2,913		2,780
Interest expense	93		91		277		269
Total claims and expenses	5,628		5,275		16,750		15,880
Income before income taxes	1,258		1,177		3,629		3,574
Income tax expense	339		313		975		889
Net income	$919		$864		$2,654		$2,685
Net income per share	'		'		'		'
Net income per share, basic	$2.72		$2.33		$7.68		$7.12
Net income per share, diluted	$2.69		$2.30		$7.60		$7.05
Weighted average number of common shares outstanding	'		'		'		'
Weighted average number of common shares outstanding, basic	335.1		368.9		342.9		374.1
Weighted average number of common shares outstanding, diluted	338.9		372.9		346.5		378.1
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(8) million and $0 million for the three months ended September 30, 2014 and 2013, respectively, and $(16) million and $(1) million for the nine months ended September 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(10) million and $(3) million for the three months ended September 30, 2014 and 2013, respectively, and $(20) million and $(10) million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in net realized investment gains (losses). In addition, unrealized gains from other changes in total OTTI of $2 million and $3 million for the three months ended September 30, 2014 and 2013, respectively, and $4 million and $9 million for the nine months ended September 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		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consolidated Statement of Income (Unaudited)	'	'	'	'
Total other-than-temporary impairment gains (losses)	($8)	$0	($16)	($1)
Other-than-temporary impairment, credit losses recognized in net realized investment gains (losses)	-10	-3	-20	-10
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	$2	$3	$4	$9

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consolidated Statement of Comprehensive Income (Unaudited)	'	'	'	'
Net income	$919	$864	$2,654	$2,685
Other comprehensive income (loss):	'	'	'	'
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	-154	-204	901	-2,370
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	1	-2	4	2
Net changes in benefit plan assets and obligations	15	24	45	78
Net changes in unrealized foreign currency translation	-203	112	-149	-57
Other comprehensive income (loss) before income taxes	-341	-70	801	-2,347
Income tax expense (benefit)	-79	-55	311	-816
Other comprehensive income (loss), net of taxes	-262	-15	490	-1,531
Comprehensive income	$657	$849	$3,144	$1,154

Consolidated_Balance_Sheet_Una

Consolidated Balance Sheet (Unaudited at September 30, 2014) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'	'	'	'
Fixed maturities, available for sale, at fair value (amortized cost $61,043 and $62,196)	$63,622	$63,956	'	'
Equity securities, available for sale, at fair value (cost $609 and $686)	949	943	'	'
Real estate investments	949	938	'	'
Short-term securities	5,033	3,882	'	'
Other investments	3,637	3,441	'	'
Total investments	74,190	73,160	'	'
Cash	367	294	295	330
Investment income accrued	663	734	'	'
Premiums receivable	6,439	6,125	'	'
Reinsurance recoverables	9,279	9,713	'	'
Ceded unearned premiums	848	801	'	'
Deferred acquisition costs	1,890	1,804	'	'
Deferred taxes	'	303	'	'
Contractholder receivables	4,367	4,328	'	'
Goodwill	3,621	3,634	'	'
Other intangible assets	316	351	'	'
Other assets	2,542	2,565	'	'
Total assets	104,522	103,812	'	'
Liabilities	'	'	'	'
Claims and claim adjustment expense reserves	50,402	50,895	'	'
Unearned premium reserves	12,181	11,850	'	'
Contractholder payables	4,367	4,328	'	'
Payables for reinsurance premiums	491	298	'	'
Deferred taxes	122	'	'	'
Debt	6,348	6,346	'	'
Other liabilities	5,290	5,299	'	'
Total liabilities	79,201	79,016	'	'
Shareholders' equity	'	'	'	'
Common stock (1,750.0 shares authorized; 331.4 and 353.5 shares issued and outstanding)	21,764	21,500	21,425	21,161
Retained earnings	26,394	24,291	23,485	21,352
Accumulated other comprehensive income	1,300	810	705	2,236
Treasury stock, at cost (427.6 and 401.5 shares)	-24,137	-21,805	-20,804	-19,344
Total shareholders' equity	25,321	24,796	24,811	'
Total liabilities and shareholders' equity	$104,522	$103,812	'	'

Consolidated_Balance_Sheet_Par

Consolidated Balance Sheet Parentheticals (Unaudited at September 30, 2014) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Consolidated Balance Sheet (Unaudited at September 30, 2014)	'	'	'	'
Fixed maturities, available for sale, amortized cost	$61,043	$62,196	'	'
Equity securities, available for sale, cost	$609	$686	'	'
Common stock, shares authorized	1,750	1,750	'	'
Common stock, shares issued	331.4	353.5	'	'
Common stock, shares outstanding	331.4	353.5	364.1	377.4
Treasury stock, at cost, shares	427.6	401.5	'	'

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Common stock	'	'
Common stock, balance, beginning of year	$21,500	$21,161
Common stock, employee share-based compensation	120	122
Common stock, compensation amortization under share-based plans and other changes	144	142
Common stock, balance, end of period	21,764	21,425
Retained earnings	'	'
Retained earnings, balance, beginning of year	24,291	21,352
Net income	2,654	2,685
Dividends	-553	-552
Retained earnings, other	2	'
Retained earnings, balance, end of period	26,394	23,485
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)	490	-1,531
Accumulated other comprehensive income, net of tax, balance, end of period	1,300	705
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	-2,275	-1,400
Treasury stock (at cost), net shares acquired related to employee share-based compensation plans	-57	-60
Treasury stock (at cost), balance, end of period	-24,137	-20,804
Total shareholders' equity	$25,321	$24,811
Common shares outstanding	'	'
Common shares outstanding, balance, beginning of year	353.5	377.4
Common shares outstanding, treasury stock acquired - share repurchase authorization	-25.4	-17
Common shares outstanding, net shares issued under employee share-based compensation plans	3.3	3.7
Common shares outstanding, balance, end of period	331.4	364.1

Consolidated_Statement_of_Cash

Consolidated Statement of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013
Cash flows from operating activities	'		'
Net income	$2,654		$2,685
Adjustments to reconcile net income to net cash provided by operating activities:	'		'
Net realized investment gains	-57	[1]	-155	[1]
Depreciation and amortization	653		642
Deferred federal income tax expense	93		132
Amortization of deferred acquisition costs	2,899		2,851
Equity in income from other investments	-412		-247
Change in premiums receivable	-334		-242
Change in reinsurance recoverables	403		1,102
Change in deferred acquisition costs	-2,993		-2,862
Change in claims and claim adjustment expense reserves	-298		-1,684
Change in unearned premium reserves	379		483
Other operating activities	181		184
Net cash provided by operating activities	3,168		2,889
Cash flows from investing activities	'		'
Proceeds from maturities of fixed maturities	7,975		5,917
Proceeds from sales of investments, fixed maturities	927		1,160
Proceeds from sales of investments, equity securities	128		57
Proceeds from sales of investments, real estate investments	5		'
Proceeds from sales of investments, other investments	612		545
Purchases of investments, fixed maturities	-8,237		-6,492
Purchases of investments, equity securities	-47		-50
Purchases of investments, real estate investments	-41		-65
Purchases of investments, other investments	-406		-312
Net purchases of short-term securities	-1,163		-1,893
Securities transactions in course of settlement	119		280
Acquisition, net of cash acquired	-12		'
Other investing activities	-262		-254
Net cash used in investing activities	-402		-1,107
Cash flows from financing activities	'		'
Payment of debt	'		-500
Issuance of debt	'		494
Dividends paid to shareholders	-549		-549
Issuance of common stock - employee share options	154		158
Treasury stock acquired - share repurchase authorization	-2,275		-1,400
Treasury stock acquired - net employee share-based compensation	-56		-60
Excess tax benefits from share-based payment arrangements	38		43
Net cash used in financing activities	-2,688		-1,814
Effect of exchange rate changes on cash	-5		-3
Net increase (decrease) in cash	73		-35
Cash at beginning of year	294		330
Cash at end of period	367		295
Supplemental disclosure of cash flow information	'		'
Income taxes paid	785		724
Interest paid	$217		$206
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(8) million and $0 million for the three months ended September 30, 2014 and 2013, respectively, and $(16) million and $(1) million for the nine months ended September 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(10) million and $(3) million for the three months ended September 30, 2014 and 2013, respectively, and $(20) million and $(10) million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in net realized investment gains (losses). In addition, unrealized gains from other changes in total OTTI of $2 million and $3 million for the three months ended September 30, 2014 and 2013, respectively, and $4 million and $9 million for the nine months ended September 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	9 Months Ended
	Sep. 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 as updated by the Company’s Form 8-K filed on September 10, 2014.
	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. Dominion is included in the Company’s Business and International Insurance segment.
	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.
	Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern
	In August 2014, the FASB issued guidance to address the diversity in practice in determining when there is substantial doubt about an entity’s ability to continue as a going concern and when an entity must disclose certain relevant conditions and events.  The new guidance requires an entity to evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or available to be issued).  The new guidance allows the entity to consider the mitigating effects of management’s plans that will alleviate the substantial doubt and requires certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans.  If conditions or events raise substantial doubt that is not alleviated, an entity should disclose that there is substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or available to be issued), along with the principal conditions or events that raise substantial doubt, management’s evaluation of the significance of those conditions or events in relation to the entity’s ability to meet its obligations and management’s plans that are intended to mitigate those conditions.
	The guidance is effective for annual periods ending after December 15, 2016, and interim and annual periods thereafter.
	Nature of Operations
	On June 10, 2014, the Company announced a realignment of its management team, effective July 1, 2014, that gave rise to a realignment of two of its three reportable business segments, as follows:
	·         The Company’s International Insurance group, which had previously been included in the Financial, Professional & International Insurance segment, was combined with the Company’s previous Business Insurance segment to create a new Business and International Insurance segment.
	·         The Bond & Financial Products group, which comprised the remaining businesses in the Financial, Professional & International Insurance segment, now comprises the new Bond & Specialty Insurance segment.
	·         The Personal Insurance segment was not impacted by these changes.
	The realignment of segments described above was made to reflect the realignment of the Company’s senior management responsibilities and the manner in which the Company’s businesses have been managed starting July 1, 2014, and the aggregation of products and services based on the type of customer, how the business is marketed and the manner in which risks are underwritten.
	In connection with these changes, the Company has realigned and revised the names of several businesses that comprise the Business and International Insurance segment.  The new reportable business segments are as follows:
	Business and International Insurance
	The Business and International Insurance segment offers a broad array of property and casualty insurance and insurance related services to its clients, primarily in the United States, as well as in Canada, the United Kingdom, the Republic of Ireland and throughout other parts of the world as a corporate member of Lloyd’s.
	Business and International Insurance is comprised of: Select Accounts; Middle Market; National Accounts; First Party; Specialized Distribution; and International.  International includes Dominion, which the Company acquired in November 2013 and which writes personal lines and small commercial insurance business in Canada.
	International also includes the Company’s 49.5% ownership 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.
	Business and International 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 are collectively referred to as Business and International Insurance Other.
	Bond & Specialty Insurance
	The Bond & Specialty Insurance segment includes surety and financial liability coverages, which primarily use credit-based underwriting processes, and provide a wide range of primarily domestic customers with bond and insurance products and risk management services.
	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.

Segment_Information

Segment Information	9 Months Ended
	Sep. 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 and			Bond & Specialty			Personal			Total
	ended September 30,	International			Insurance			Insurance			Reportable
	in millions)	Insurance									Segments
	2014
	Premiums	$	3,660		$	527		$	1,796		$	5,983
	Net investment income	557			64			98			719
	Fee income	110			—			—			110
	Other revenues	10			5			19			34
	Total operating revenues (1)	$	4,337		$	596		$	1,913		$	6,846
	Operating income (1)	$	552		$	165		$	239		$	956
	2013
	Premiums	$	3,325		$	506		$	1,835		$	5,666
	Net investment income	504			63			90			657
	Fee income	107			—			—			107
	Other revenues	8			5			34			47
	Total operating revenues (1)	$	3,944		$	574		$	1,959		$	6,477
	Operating income (1)	$	566		$	120		$	262		$	948
	(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 nine months	Business and			Bond & Specialty			Personal			Total
	ended September 30,	International			Insurance			Insurance			Reportable
	in millions)	Insurance									Segments
	2014
	Premiums	$	10,849		$	1,554		$	5,331		$	17,734
	Net investment income	1,666			192			292			2,150
	Fee income	329			—			—			329
	Other revenues	32			15			62			109
	Total operating revenues (1)	$	12,876		$	1,761		$	5,685		$	20,322
	Operating income (1)	$	1,717		$	511		$	582		$	2,810
	2013
	Premiums	$	9,801		$	1,476		$	5,509		$	16,786
	Net investment income	1,544			195			275			2,014
	Fee income	286			—			—			286
	Other revenues	135			15			67			217
	Total operating revenues (1)	$	11,766		$	1,686		$	5,851		$	19,303
	Operating income (1)	$	1,773		$	399		$	601		$	2,773
	(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						Nine Months Ended
		September 30,						September 30,
	(in millions)	2014			2013			2014			2013
	Revenue reconciliation
	Earned premiums
	Business and International Insurance:
	Domestic:
	Workers’ compensation	$	928		$	896		$	2,759		$	2,640
	Commercial automobile	481			476			1,422			1,425
	Commercial property	442			432			1,310			1,259
	General liability	472			452			1,376			1,333
	Commercial multi-peril	774			779			2,292			2,320
	Other	10			11			31			29
	Total Domestic	3,107			3,046			9,190			9,006
	International	553			279			1,659			795
	Total Business and International Insurance	3,660			3,325			10,849			9,801
	Bond & Specialty Insurance:
	Fidelity and surety	240			235			700			683
	General liability	243			227			721			661
	Other	44			44			133			132
	Total Bond & Specialty Insurance	527			506			1,554			1,476
	Personal Insurance:
	Automobile	835			855			2,471			2,591
	Homeowners and other	961			980			2,860			2,918
Total Personal Insurance	1,796			1,835			5,331			5,509
Total earned premiums	5,983			5,666			17,734			16,786
Net investment income	719			657			2,150			2,014
Fee income	110			107			329			286
Other revenues	34			47			109			217
Total operating revenues for reportable segments	6,846			6,477			20,322			19,303
Other revenues	—			(3		)	—			(4		)
Net realized investment gains (losses)	40			(22		)	57			155
Total consolidated revenues	$	6,886		$	6,452		$	20,379		$	19,454
Income reconciliation, net of tax
Total operating income for reportable segments	$	956		$	948		$	2,810		$	2,773
Interest Expense and Other (1)	(63		)	(65		)	(192		)	(187		)
Total operating income	893			883			2,618			2,586
Net realized investment gains (losses)	26			(19		)	36			99
Total consolidated net income	$	919		$	864		$	2,654		$	2,685
(1)           The primary component of Interest Expense and Other is after-tax interest expense of $60 million and $59 million for the three months ended September 30, 2014 and 2013, respectively, and $180 million and $175 million for the nine months ended September 30, 2014 and 2013, respectively.
(in millions)	September 30,			December 31,
	2014			2013
Asset reconciliation:
Business and International Insurance	$	83,218		$	82,789
Bond & Specialty Insurance	7,871			7,648
Personal Insurance	12,975			12,870
Total assets for reportable segments	104,064			103,307
Other assets (1)	458			505
Total consolidated assets	$	104,522		$	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	9 Months Ended
	Sep. 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 September 30, 2014, in millions)	Cost		Gains		Losses		Value
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,050	$	31	$	7	$	2,074
	Obligations of states, municipalities and political subdivisions:
	Pre-refunded	7,459		348		—		7,807
	All other	24,787		1,336		33		26,090
	Total obligations of states, municipalities and political subdivisions	32,246		1,684		33		33,897
	Debt securities issued by foreign governments	2,435		34		1		2,468
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,114		167		7		2,274
	All other corporate bonds	22,072		828		126		22,774
	Redeemable preferred stock	126		9		—		135
	Total	$	61,043	$	2,753	$	174	$	63,622
		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 $7.81 billion and $9.52 billion at September 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 September 30, 2014, in millions)	Cost		Gains		Losses		Value
	Public common stock	$	396	$	312	$	—	$	708
	Non-redeemable preferred stock	213		30		2		241
	Total	$	609	$	342	$	2	$	949
				Gross Unrealized				Fair
	(at December 31, 2013, in millions)	Cost		Gains		Losses		Value
	Public 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 September 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 September 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	$	172	$	2	$	105	$	5		$	277		$	7
	Obligations of states, municipalities and political subdivisions	1,033		1		1,736		32			2,769			33
	Debt securities issued by foreign governments	226		—		143		1			369			1
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	157		1		257		6			414			7
	All other corporate bonds	3,161		34		2,658		92			5,819			126
	Total fixed maturities	4,749		38		4,899		136			9,648			174
	Equity securities
	Public common stock	36		—		1		—			37			—
	Non-redeemable preferred stock	108		2		—		—			108			2
	Total equity securities	144		2		1		—			145			2
	Total	$	4,893	$	40	$	4,900	$	136		$	9,793		$	176
		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
Public 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 September 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 September 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	—		—		2		2			4
Total fixed maturities	—		—		2		2			4
Equity securities	—		—		—		—			—
Total	$	—	$	—	$	2	$	2		$	4
These unrealized losses at September 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 (losses) in the consolidated statement of income were as follows:
	Three Months Ended				Nine Months Ended
	September 30,				September 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		2
All other corporate bonds	9		—		12		—
Redeemable preferred stock	—		—		—		—
Total fixed maturities	9		—		13		2
Equity securities
Public common stock	1		2		6		3
Non-redeemable preferred stock	—		—		—		—
Total equity securities	1		2		6		3
Other investments	—		1		1		5
Total	$	10	$	3	$	20	$	10
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 September 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	$	43	$	—	$	—	$	—		$	1		$	44
All other corporate bonds	66		—		—		(5		)	—			61
Total fixed maturities	$	109	$	—	$	—	$	(5	)	$	1		$	105
(for the nine months ended September 30, in
millions)
Fixed maturities
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	53	$	—	$	1	$	(3	)	$	(7	)	$	44
All other corporate bonds	65		—		3		(5		)	(2		)	61
Total fixed maturities	$	118	$	—	$	4	$	(8	)	$	(9	)	$	105
	2013
(for the three months ended September 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	$	—	$	—	$	—		$	(2	)	$	53
All other corporate bonds	70		—		—		—			(1		)	69
Total fixed maturities	$	125	$	—	$	—	$	—		$	(3	)	$	122
(for the nine months ended September 30, in
millions)
Fixed maturities
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	55	$	—	$	2	$	—		$	(4	)	$	53
All other corporate bonds	72		—		—		—			(3		)	69
Total fixed maturities	$	127	$	—	$	2	$	—		$	(7	)	$	122
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 September 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 (losses) in both the three months ended September 30, 2014 and 2013 included net losses of approximately $0 million related to U.S. Treasury futures contracts.  Net realized investment gains (losses) in the nine months ended September 30, 2014 and 2013 included net losses of $0.3 million and net gains of $115 million, respectively, related to U.S. Treasury futures contracts.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 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 third party, nationally recognized pricing services.  When quoted market prices are unavailable, the Company utilizes these pricing services to determine an estimate of fair value.  The fair value estimates provided from these pricing services 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 September 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 $133 million and $94 million at September 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 $134 million and $161 million at September 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.
	Equity Securities — Public Common Stock and Non-Redeemable Preferred Stock
	For public common stock and non-redeemable preferred stocks, the Company receives prices from pricing services 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 services.  The services utilize similar methodologies to price the non-redeemable preferred stocks as they do 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 September 30, 2014 and December 31, 2013 was disclosed in Level 1.  At September 30, 2014 and December 31, 2013, the Company held investments in non-public common and preferred equity securities, with fair value estimates of $37 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 September 30, 2014 and December 31, 2013 in the amount disclosed in Level 3.
	Derivatives
	At September 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 September 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 September 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	$	2,074		$	2,062		$	12		$	—
	Obligations of states, municipalities and political subdivisions	33,897			24			33,860			13
	Debt securities issued by foreign governments	2,468			9			2,459			—
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,274			—			2,274			—
	All other corporate bonds	22,774			17			22,511			246
	Redeemable preferred stock	135			5			122			8
	Total fixed maturities	63,622			2,117			61,238			267
	Equity securities
	Public common stock	708			708			—			—
	Non-redeemable preferred stock	241			93			148			—
	Total equity securities	949			801			148			—
	Other investments	56			19			—			37
	Total	$	64,627		$	2,937		$	61,386		$	304
	During the nine months ended September 30, 2014, the Company had transfers of $1 million of obligations of states, municipalities and political subdivisions from Level 1 to Level 2.  In addition, the Company had transfers of $10 million of non-redeemable preferred stock and $5 million of 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
	Public 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 nine months ended September 30, 2014 and the twelve months ended December 31, 2013.
	Three Months Ended September 30, 2014 (in millions)	Fixed			Other			Total
		Maturities			Investments
	Balance at June 30, 2014	$	264		$	36		$	300
	Total realized and unrealized investment gains (losses):
	Reported in net realized investment gains (losses) (1)	1			—			1
Reported in increases (decreases) in other comprehensive income	(2		)	1			(1		)
Purchases, sales and settlements/maturities:
Purchases	74			—			74
Sales	—			—			—
Settlements/maturities	(13		)	—			(13		)
Gross transfers into Level 3	8			—			8
Gross transfers out of Level 3	(65		)	—			(65		)
Balance at September 30, 2014	$	267		$	37		$	304
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.
Nine Months Ended September 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 (losses) (1)	3			1			4
Reported in increases (decreases) in other comprehensive income	(2		)	1			(1		)
Purchases, sales and settlements/maturities:
Purchases	216			1			217
Sales	(1		)	—			(1		)
Settlements/maturities	(73		)	—			(73		)
Gross transfers into Level 3	8			—			8
Gross transfers out of Level 3	(139		)	—			(139		)
Balance at September 30, 2014	$	267		$	37		$	304
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 September 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 September 30, 2014, in millions)	Carrying			Fair			Level 1			Level 2		Level 3
	Value			Value
Financial assets:
Short-term securities	$	5,033		$	5,033		$	1,265		$	3,719	$	49
Financial liabilities:
Debt	$	6,248		$	7,390		$	—		$	7,390	$	—
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 98% and 97% of short-term securities at September 30, 2014 and December 31, 2013, respectively.  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 September 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 nine months ended September 30, 2014 or twelve months ended December 31, 2013.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 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 September 30, 2014 and December 31, 2013:
	(in millions)	September 30,		December 31,
		2014		2013
	Business and International Insurance (1)	$	2,486	$	2,499
	Bond & Specialty Insurance	495		495
	Personal Insurance	613		613
	Other	27		27
	Total	$	3,621	$	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 September 30, 2014 and December 31, 2013:
	(at September 30, 2014, in millions)	Gross		Accumulated		Net
		Carrying		Amortization
		Amount
	Intangibles subject to amortization
	Customer-related	$	460	$	438	$	22
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles (1)	209		132		77
	Total intangible assets subject to amortization	669		570		99
	Intangible assets not subject to amortization	217		—		217
	Total other intangible assets	$	886	$	570	$	316
	(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				Nine Months Ended
		September 30,				September 30,
	(in millions)	2014		2013		2014		2013
	Customer-related	$	8	$	8	$	24	$	23
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles	4		3		11		11
	Total amortization expense	$	12	$	11	$	35	$	34
	Intangible asset amortization expense is estimated to be $12 million for the remainder of 2014, $26 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	9 Months Ended
	Sep. 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 nine months ended September 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	610			—			—			(130		)	480
	Amounts reclassified from AOCI	(20		)	2			28			—			10
	Net OCI, current period	590			2			28			(130		)	490
	Balance, September 30, 2014	$	1,715		$	199		$	(403	)	$	(211	)	$	1,300
	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 nine months ended September 30, 2014 and 2013.
	(for the three months ended September 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	(154	)	$	(204	)
	Income tax benefit	(55		)	(72		)
	Net of taxes	(99		)	(132		)
	Having credit losses recognized in the consolidated statement of income	1			(2		)
	Income tax expense (benefit)	1			(1		)
	Net of taxes	—			(1		)
	Net changes in benefit plan assets and obligations	15			24
	Income tax expense	5			9
	Net of taxes	10			15
	Net changes in unrealized foreign currency translation	(203		)	112
	Income tax expense (benefit)	(30		)	9
	Net of taxes	(173		)	103
	Total other comprehensive loss	(341		)	(70		)
	Total income tax benefit	(79		)	(55		)
	Total other comprehensive loss, net of taxes	$	(262	)	$	(15	)
	(for the nine months ended September 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	901		$	(2,370	)
	Income tax expense (benefit)	311			(824		)
	Net of taxes	590			(1,546		)
	Having credit losses recognized in the consolidated statement of income	4			2
	Income tax expense	2			—
	Net of taxes	2			2
	Net changes in benefit plan assets and obligations	45			78
	Income tax expense	17			28
	Net of taxes	28			50
	Net changes in unrealized foreign currency translation	(149		)	(57		)
	Income tax benefit	(19		)	(20		)
	Net of taxes	(130		)	(37		)
	Total other comprehensive income (loss)	801			(2,347		)
	Total income tax expense (benefit)	311			(816		)
	Total other comprehensive income (loss), net of taxes	$	490		$	(1,531	)
	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 nine months ended September 30, 2014 and 2013.
	(for the three months ended September 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)	$	(1	)	$	(4	)
	Income tax expense (2)	—			(1		)
	Net of taxes	(1		)	(3		)
	Having credit losses recognized in the consolidated statement of income (1)	—			—
	Income tax benefit (2)	—			—
	Net of taxes	—			—
	Reclassification adjustment related to benefit plan assets and obligations (3)	15			26
	Income tax benefit (2)	5			9
	Net of taxes	10			17
	Reclassification adjustment related to foreign currency translation (1)	—			11
Income tax benefit (2)	—			—
Net of taxes	—			11
Total reclassifications	14			33
Total income tax benefit	5			8
Total reclassifications, net of taxes	$	9		$	25
(1)     (Increases) decreases net realized investment gains (losses) 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 nine months ended September 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)	$	(30	)	$	(55	)
Income tax expense (2)	(10		)	(19		)
Net of taxes	(20		)	(36		)
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)	45			78
Income tax benefit (2)	17			27
Net of taxes	28			51
Reclassification adjustment related to foreign currency translation (1)	—			8
Income tax benefit (2)	—			—
Net of taxes	—			8
Total reclassifications	19			33
Total income tax benefit	9			9
Total reclassifications, net of taxes	$	10		$	24
(1)     (Increases) decreases net realized investment gains (losses) 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	9 Months Ended
	Sep. 30, 2014
Common Share Repurchases disclosure	'
Common Share Repurchases disclosure [Text Block]	'
	7.                          COMMON SHARE REPURCHASES
	During the three months and nine months ended September 30, 2014, the Company repurchased 8.1 million and 25.4 million shares, respectively, under its share repurchase authorization, for a total cost of $750 million and $2.28 billion, respectively.  The average cost per share repurchased was $92.47 and $89.61, respectively.  At September 30, 2014, the Company had $2.48 billion of capacity remaining under the share repurchase authorization.

Earnings_per_Share

Earnings per Share	9 Months Ended
	Sep. 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						Nine Months Ended
		September 30,						September 30,
	(in millions, except per share amounts)	2014			2013			2014			2013
	Basic and Diluted
	Net income, as reported	$	919		$	864		$	2,654		$	2,685
	Participating share-based awards — allocated income	(7		)	(6		)	(19		)	(20		)
	Net income available to common shareholders — basic and diluted	$	912		$	858		$	2,635		$	2,665
	Common Shares
	Basic
	Weighted average shares outstanding	335.1			368.9			342.9			374.1
	Diluted
	Weighted average shares outstanding	335.1			368.9			342.9			374.1
	Weighted average effects of dilutive securities — stock options and performance shares	3.8			4			3.6			4
	Total	338.9			372.9			346.5			378.1
	Net Income per Common Share
	Basic	$	2.72		$	2.33		$	7.68		$	7.12
	Diluted	$	2.69		$	2.3		$	7.6		$	7.05

ShareBased_Incentive_Compensat

Share-Based Incentive Compensation	9 Months Ended
	Sep. 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 September 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)	7,597,990	$	58.48	6.0 years	$	269
	Exercisable at end of period	4,775,291	$	50.4	4.6 years	$	208
	(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 September 30, 2014 and 2013, respectively, and $106 million and $99 million for the nine months ended September 30, 2014 and 2013, respectively.  The related tax benefits recognized in the consolidated statement of income were $10 million for the each of the three months ended September 30, 2014 and 2013, and $36 million and $34 million for the nine months ended September 30, 2014 and 2013, respectively.
	The total unrecognized compensation cost related to all nonvested share-based incentive compensation awards at September 30, 2014 was $151 million, which is expected to be recognized over a weighted-average period of 1.8 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	9 Months Ended
	Sep. 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.
	(for the three months ended September 30, in	Pension Plans						Postretirement Benefit Plans
	millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	27		$	30		$	—		$	—
	Interest cost on benefit obligation	38			33			3			3
	Expected return on plan assets	(55		)	(52		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			(1		)	(1		)
	Net actuarial (gain) loss	17			27			(1		)	—
	Net periodic benefit cost	$	27		$	38		$	1		$	2
	(for the nine months ended September 30, in	Pension Plans						Postretirement Benefit Plans
	millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	82		$	89		$	—		$	—
	Interest cost on benefit obligation	113			99			8			7
	Expected return on plan assets	(164		)	(156		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			(2		)	(2		)
	Net actuarial (gain) loss	49			80			(2		)	—
	Net periodic benefit cost	$	80		$	112		$	4		$	5

Contingencies_Commitments_and_

Contingencies, Commitments and Guarantees	9 Months Ended
	Sep. 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 alleged that the insurer defendants engaged in unfair trade practices in violation of state statutes by inappropriately handling and settling asbestos claims. The plaintiffs sought 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 sought damages, including punitive damages. Lawsuits seeking similar relief and raising similar allegations, primarily violations of purported common law duties to third parties, were also 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.  On July 22, 2014, the Second Circuit issued an opinion reversing the district court’s decision and reinstating the bankruptcy court’s January 20, 2011 order which ordered TPC to pay the settlement amounts plus prejudgment interest. On August 5, 2014, TPC filed a Petition for Rehearing and Rehearing En Banc with the Second Circuit.  The parties await the court’s decision on that petition.  At September 30, 2014, the settlement amount recognized in the Company’s consolidated financial statements totaled $579 million, comprising the $502 million settlement amount described above, plus pre-judgment and post-judgment interest totaling $77 million. Post-judgment interest will continue to accrue at an annual rate of 0.27% until the settlement is paid.
	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 had been served are either currently on the inactive docket in Texas state court or have been superseded by amended petitions that do not name SPC.  If any of those cases becomes active or are amended to name SPC, 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 September 30, 2014, the claim totaled $482 million, comprising the $238 million of reinsurance recoverable plus interest amounting to $244 million as of that date.  Interest will continue to accrue at an annual rate of 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 $1.57 billion and $1.52 billion at September 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 $464 million at September 30, 2014, of which $8 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 September 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 September 30, 2014, all of which is indemnified by a third party.

Consolidating_Financial_Statem

Consolidating Financial Statements (Unaudited)	9 Months Ended
	Sep. 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 September 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 September 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	4,064		$	1,919		$	—		$	—		$	5,983
	Net investment income	479			239			1			—			719
	Fee income	110			—			—			—			110
	Net realized investment gains (losses)(1)	(2		)	41			1			—			40
	Other revenues	28			6			—			—			34
	Total revenues	4,679			2,205			2			—			6,886
	Claims and expenses
	Claims and claim adjustment expenses	2,359			1,161			—			—			3,520
	Amortization of deferred acquisition costs	642			342			—			—			984
	General and administrative expenses	716			311			4			—			1,031
	Interest expense	12			—			81			—			93
	Total claims and expenses	3,729			1,814			85			—			5,628
	Income (loss) before income taxes	950			391			(83		)	—			1,258
	Income tax expense (benefit)	263			106			(30		)	—			339
	Net income of subsidiaries	—			—			972			(972		)	—
	Net income	$	687		$	285		$	919		$	(972	)	$	919
	(1)     Total other-than-temporary impairments (OTTI) for the three months ended September 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 (losses)	$	(8	)	$	—		$	—		$	—		$	(8	)
	OTTI losses recognized in net realized investment gains (losses)	$	(9	)	$	(1	)	$	—		$	—		$	(10	)
	OTTI gains recognized in OCI	$	1		$	1		$	—		$	—		$	2
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the three months ended September 30, 2013
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	3,839		$	1,827		$	—		$	—		$	5,666
	Net investment income	438			217			2			—			657
	Fee income	106			1			—			—			107
	Net realized investment gains (losses) (1)	3			(25		)	—			—			(22		)
	Other revenues	38			6			—			—			44
	Total revenues	4,424			2,026			2			—			6,452
	Claims and expenses
	Claims and claim adjustment expenses	2,214			1,083			—			—			3,297
	Amortization of deferred acquisition costs	640			313			—			—			953
	General and administrative expenses	646			286			2			—			934
	Interest expense	12			—			79			—			91
	Total claims and expenses	3,512			1,682			81			—			5,275
	Income (loss) before income taxes	912			344			(79		)	—			1,177
	Income tax expense (benefit)	248			93			(28		)	—			313
	Net income of subsidiaries	—			—			915			(915		)	—
	Net income	$	664		$	251		$	864		$	(915	)	$	864
	(1)     Total other-than-temporary impairments (OTTI) for the three months ended September 30, 2013, 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 (losses)	$	1		$	(1	)	$	—		$	—		$	—
	OTTI losses recognized in net realized investment gains (losses)	$	(2	)	$	(1	)	$	—		$	—		$	(3	)
	OTTI gains recognized in OCI	$	3		$	—		$	—		$	—		$	3
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the nine months ended September 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
Revenues
Premiums	$	12,028		$	5,706		$	—		$	—		$	17,734
Net investment income	1,451			695			4			—			2,150
Fee income	328			1			—			—			329
Net realized investment gains (1)	4			50			3			—			57
Other revenues	93			16			—			—			109
Total revenues	13,904			6,468			7			—			20,379
Claims and expenses
Claims and claim adjustment expenses	7,149			3,512			—			—			10,661
Amortization of deferred acquisition costs	1,927			972			—			—			2,899
General and administrative expenses	2,026			876			11			—			2,913
Interest expense	36			—			241			—			277
Total claims and expenses	11,138			5,360			252			—			16,750
Income (loss) before income taxes	2,766			1,108			(245		)	—			3,629
Income tax expense (benefit)	770			291			(86		)	—			975
Net income of subsidiaries	—			—			2,813			(2,813		)	—
Net income	$	1,996		$	817		$	2,654		$	(2,813	)	$	2,654
(1)     Total other-than-temporary impairments (OTTI) for the nine months ended September 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 losses	$	(11	)	$	(5	)	$	—		$	—		$	(16	)
OTTI losses recognized in net realized investment gains	$	(14	)	$	(6	)	$	—		$	—		$	(20	)
OTTI gains recognized in OCI	$	3		$	1		$	—		$	—		$	4
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF INCOME (Unaudited)
For the nine months ended September 30, 2013
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Revenues
Premiums	$	11,384		$	5,402		$	—		$	—		$	16,786
Net investment income	1,350			659			5			—			2,014
Fee income	284			2			—			—			286
Net realized investment gains (1)	120			34			1			—			155
Other revenues	170			43			—			—			213
Total revenues	13,308			6,140			6			—			19,454
Claims and expenses
Claims and claim adjustment expenses	6,684			3,296			—			—			9,980
Amortization of deferred acquisition costs	1,912			939			—			—			2,851
General and administrative expenses	1,915			861			4			—			2,780
Interest expense	41			—			228			—			269
Total claims and expenses	10,552			5,096			232			—			15,880
Income (loss) before income taxes	2,756			1,044			(226		)	—			3,574
Income tax expense (benefit)	700			269			(80		)	—			889
Net income of subsidiaries	—			—			2,831			(2,831		)	—
Net income	$	2,056		$	775		$	2,685		$	(2,831	)	$	2,685
(1)     Total other-than-temporary impairments (OTTI) for the nine months ended September 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)	$	(3	)	$	2		$	—		$	—		$	(1	)
OTTI losses recognized in net realized investment gains	$	(7	)	$	(3	)	$	—		$	—		$	(10	)
OTTI gains recognized in OCI	$	4		$	5		$	—		$	—		$	9
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
For the three months ended September 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	687		$	285		$	919		$	(972	)	$	919
Other comprehensive income (loss):
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	(118		)	(35		)	(1		)	—			(154		)
Having credit losses recognized in the consolidated statement of income	2			(1		)	—			—			1
Net changes in benefit plan assets and obligations	—			1			14			—			15
Net changes in unrealized foreign currency translation	(120		)	(83		)	—			—			(203		)
Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(236		)	(118		)	13			—			(341		)
Income tax expense (benefit)	(62		)	(22		)	5			—			(79		)
Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(174		)	(96		)	8			—			(262		)
Other comprehensive loss of subsidiaries	—			—			(270		)	270			—
Other comprehensive loss	(174		)	(96		)	(262		)	270			(262		)
Comprehensive income	$	513		$	189		$	657		$	(702	)	$	657
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
For the three months ended September 30, 2013
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	664		$	251		$	864		$	(915	)	$	864
Other comprehensive income (loss):
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	(138		)	(71		)	5			—			(204		)
Having credit losses recognized in the consolidated statement of income	(1		)	(1		)	—			—			(2		)
Net changes in benefit plan assets and obligations	—			(1		)	25			—			24
Net changes in unrealized foreign currency translation	26			86			—			—			112
Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(113		)	13			30			—			(70		)
Income tax expense (benefit)	(46		)	(20		)	11			—			(55		)
Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(67		)	33			19			—			(15		)
Other comprehensive loss of subsidiaries	—			—			(34		)	34			—
Other comprehensive income (loss)	(67		)	33			(15		)	34			(15		)
Comprehensive income	$	597		$	284		$	849		$	(881	)	$	849
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
For the nine months ended September 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	1,996		$	817		$	2,654		$	(2,813	)	$	2,654
Other comprehensive income:
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	632			266			3			—			901
Having credit losses recognized in the consolidated statement of income	11			(7		)	—			—			4
Net changes in benefit plan assets and obligations	—			1			44			—			45
Net changes in unrealized foreign currency translation	(94		)	(55		)	—			—			(149		)
Other comprehensive income before income taxes and other comprehensive income of subsidiaries	549			205			47			—			801
Income tax expense	210			84			17			—			311
Other comprehensive income, net of taxes, before other comprehensive income of subsidiaries	339			121			30			—			490
Other comprehensive income of subsidiaries	—			—			460			(460		)	—
Other comprehensive income	339			121			490			(460		)	490
Comprehensive income	$	2,335		$	938		$	3,144		$	(3,273	)	$	3,144
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
For the nine months ended September 30, 2013
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Net income	$	2,056		$	775		$	2,685		$	(2,831	)	$	2,685
Other comprehensive income (loss):
Changes in net unrealized gains on investment securities:
Having no credit losses recognized in the consolidated statement of income	(1,735		)	(647		)	12			—			(2,370		)
Having credit losses recognized in the consolidated statement of income	4			(2		)	—			—			2
Net changes in benefit plan assets and obligations	1			2			75			—			78
Net changes in unrealized foreign currency translation	(35		)	(22		)	—			—			(57		)
Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(1,765		)	(669		)	87			—			(2,347		)
Income tax expense (benefit)	(616		)	(231		)	31			—			(816		)
Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(1,149		)	(438		)	56			—			(1,531		)
Other comprehensive loss of subsidiaries	—			—			(1,587		)	1,587			—
Other comprehensive loss	(1,149		)	(438		)	(1,531		)	1,587			(1,531		)
Comprehensive income	$	907		$	337		$	1,154		$	(1,244	)	$	1,154
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING BALANCE SHEET (Unaudited)
At September 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Assets
Fixed maturities, available for sale, at fair value (amortized cost $61,043)	$	43,493		$	20,090		$	39		$	—		$	63,622
Equity securities, available for sale, at fair value (cost $609)	271			542			136			—			949
Real estate investments	56			893			—			—			949
Short-term securities	2,413			812			1,808			—			5,033
Other investments	2,658			978			1			—			3,637
Total investments	48,891			23,315			1,984			—			74,190
Cash	216			149			2			—			367
Investment income accrued	451			206			6			—			663
Premiums receivable	4,353			2,086			—			—			6,439
Reinsurance recoverables	6,214			3,065			—			—			9,279
Ceded unearned premiums	738			110			—			—			848
Deferred acquisition costs	1,666			224			—			—			1,890
Contractholder receivables	3,274			1,093			—			—			4,367
Goodwill	2,609			1,012			—			—			3,621
Other intangible assets	225			91			—			—			316
Investment in subsidiaries	—			—			28,950			(28,950		)	—
Other assets	2,011			363			168			—			2,542
Total assets	$	70,648		$	31,714		$	31,110		$	(28,950	)	$	104,522
Liabilities
Claims and claim adjustment expense reserves	$	33,414		$	16,988		$	—		$	—		$	50,402
Unearned premium reserves	8,463			3,718			—			—			12,181
Contractholder payables	3,274			1,093			—			—			4,367
Payables for reinsurance premiums	286			205			—			—			491
Deferred taxes	24			44			54			—			122
Debt	692			—			5,656			—			6,348
Other liabilities	4,039			1,160			91			—			5,290
Total liabilities	50,192			23,208			5,801			—			79,201
Shareholders’ equity
Common stock (1,750.0 shares authorized; 331.4 shares issued and outstanding)	—			390			21,764			(390		)	21,764
Additional paid-in capital	11,634			6,502			—			(18,136		)	—
Retained earnings	7,716			1,070			26,382			(8,774		)	26,394
Accumulated other comprehensive income	1,106			544			1,300			(1,650		)	1,300
Treasury stock, at cost (427.6 shares)	—			—			(24,137		)	—			(24,137		)
Total shareholders’ equity	20,456			8,506			25,309			(28,950		)	25,321
Total liabilities and shareholders’ equity	$	70,648		$	31,714		$	31,110		$	(28,950	)	$	104,522
(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 nine months ended September 30, 2014
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Cash flows from operating activities
Net income	$	1,996		$	817		$	2,654		$	(2,813	)	$	2,654
Net adjustments to reconcile net income to net cash provided by operating activities	391			(73		)	322			(126		)	514
Net cash provided by operating activities	2,387			744			2,976			(2,939		)	3,168
Cash flows from investing activities
Proceeds from maturities of fixed maturities	4,886			3,088			1			—			7,975
Proceeds from sales of investments:
Fixed maturities	511			415			1			—			927
Equity securities	83			41			4			—			128
Real estate investments	1			4			—			—			5
Other investments	317			295			—			—			612
Purchases of investments:
Fixed maturities	(4,888		)	(3,345		)	(4		)	—			(8,237		)
Equity securities	(3		)	(38		)	(6		)	—			(47		)
Real estate investments	(22		)	(19		)	—			—			(41		)
Other investments	(292		)	(114		)	—			—			(406		)
Net purchases of short-term securities	(552		)	(326		)	(285		)	—			(1,163		)
Securities transactions in course of settlement	66			53			—			—			119
Acquisitions, net of cash acquired	(9		)	(3		)	—			—			(12		)
Other	(256		)	(6		)	—			—			(262		)
Net cash provided by (used in) investing activities	(158		)	45			(289		)	—			(402		)
Cash flows from financing activities
Dividends paid to shareholders	—			—			(549		)	—			(549		)
Issuance of common stock — employee share options	—			—			154			—			154
Treasury stock acquired — share repurchase authorization	—			—			(2,275		)	—			(2,275		)
Treasury stock acquired — net employee share-based compensation	—			—			(56		)	—			(56		)
Excess tax benefits from share-based payment arrangements	—			—			38			—			38
Dividends paid to parent company	(2,150		)	(789		)	—			2,939			—
Net cash used in financing activities	(2,150		)	(789		)	(2,688		)	2,939			(2,688		)
Effect of exchange rate changes on cash	—			(5		)	—			—			(5		)
Net increase (decrease) in cash	79			(5		)	(1		)	—			73
Cash at beginning of year	137			154			3			—			294
Cash at end of period	$	216		$	149		$	2		$	—		$	367
Supplemental disclosure of cash flow information
Income taxes paid (received)	$	684		$	215		$	(114	)	$	—		$	785
Interest paid	$	40		$	—		$	177		$	—		$	217
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF CASH FLOWS (Unaudited)
For the nine months ended September 30, 2013
(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
				Subsidiaries
Cash flows from operating activities
Net income	$	2,056		$	775		$	2,685		$	(2,831	)	$	2,685
Net adjustments to reconcile net income to net cash provided by operating activities	(348		)	224			(1,531		)	1,859			204
Net cash provided by operating activities	1,708			999			1,154			(972		)	2,889
Cash flows from investing activities
Proceeds from maturities of fixed maturities	4,096			1,820			1			—			5,917
Proceeds from sales of investments:
Fixed maturities	590			565			5			—			1,160
Equity securities	21			36			—			—			57
Other investments	337			208			—			—			545
Purchases of investments:
Fixed maturities	(4,339		)	(2,146		)	(7		)	—			(6,492		)
Equity securities	(20		)	(29		)	(1		)	—			(50		)
Real estate investments	—			(65		)	—			—			(65		)
Other investments	(222		)	(90		)	—			—			(312		)
Net sales (purchases) of short-term securities	(1,563		)	(492		)	162			—			(1,893		)
Securities transactions in course of settlement	182			98			—			—			280
Other	(250		)	(4		)	—			—			(254		)
Net cash provided by (used in) investing activities	(1,168		)	(99		)	160			—			(1,107		)
Cash flows from financing activities
Payment of debt	(500		)	—			—			—			(500		)
Issuance of debt	—			—			494			—			494
Dividends paid to shareholders	—			—			(549		)	—			(549		)
Issuance of common stock — employee share options	—			—			158			—			158
Treasury stock acquired — share repurchase authorization	—			—			(1,400		)	—			(1,400		)
Treasury stock acquired — net employee share-based compensation	—			—			(60		)	—			(60		)
Excess tax benefits from share-based payment arrangements	—			—			43			—			43
Capital contributions	500			—			—			(500		)	—
Dividends paid to parent company	(587		)	(885		)	—			1,472			—
Net cash used in financing activities	(587		)	(885		)	(1,314		)	972			(1,814		)
Effect of exchange rate changes on cash	—			(3		)	—			—			(3		)
Net increase (decrease) in cash	(47		)	12			—			—			(35		)
Cash at beginning of year	177			151			2			—			330
Cash at end of period	$	130		$	163		$	2		$	—		$	295
Supplemental disclosure of cash flow information
Income taxes paid (received)	$	691		$	236		$	(203	)	$	—		$	724
Interest paid	$	52		$	—		$	154		$	—		$	206
(1)     The Travelers Companies, Inc., excluding its subsidiaries.

Basis_of_Presentation_and_Acco1

Basis of Presentation and Accounting Policies (policies)	9 Months Ended
	Sep. 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 as updated by the Company’s Form 8-K filed on September 10, 2014.
	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. Dominion is included in the Company’s Business and International Insurance segment.
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)	9 Months Ended
	Sep. 30, 2014
Segment Information disclosure	'
Company's revenues and operating income by segment [Table Text Block]	'
	(for the three months	Business and			Bond & Specialty			Personal			Total
	ended September 30,	International			Insurance			Insurance			Reportable
	in millions)	Insurance									Segments
	2014
	Premiums	$	3,660		$	527		$	1,796		$	5,983
	Net investment income	557			64			98			719
	Fee income	110			—			—			110
	Other revenues	10			5			19			34
	Total operating revenues (1)	$	4,337		$	596		$	1,913		$	6,846
	Operating income (1)	$	552		$	165		$	239		$	956
	2013
	Premiums	$	3,325		$	506		$	1,835		$	5,666
	Net investment income	504			63			90			657
	Fee income	107			—			—			107
	Other revenues	8			5			34			47
	Total operating revenues (1)	$	3,944		$	574		$	1,959		$	6,477
	Operating income (1)	$	566		$	120		$	262		$	948
	(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 nine months	Business and			Bond & Specialty			Personal			Total
	ended September 30,	International			Insurance			Insurance			Reportable
	in millions)	Insurance									Segments
	2014
	Premiums	$	10,849		$	1,554		$	5,331		$	17,734
	Net investment income	1,666			192			292			2,150
	Fee income	329			—			—			329
	Other revenues	32			15			62			109
	Total operating revenues (1)	$	12,876		$	1,761		$	5,685		$	20,322
	Operating income (1)	$	1,717		$	511		$	582		$	2,810
	2013
	Premiums	$	9,801		$	1,476		$	5,509		$	16,786
	Net investment income	1,544			195			275			2,014
	Fee income	286			—			—			286
	Other revenues	135			15			67			217
	Total operating revenues (1)	$	11,766		$	1,686		$	5,851		$	19,303
	Operating income (1)	$	1,773		$	399		$	601		$	2,773
	(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						Nine Months Ended
		September 30,						September 30,
	(in millions)	2014			2013			2014			2013
	Revenue reconciliation
	Earned premiums
	Business and International Insurance:
	Domestic:
	Workers’ compensation	$	928		$	896		$	2,759		$	2,640
	Commercial automobile	481			476			1,422			1,425
	Commercial property	442			432			1,310			1,259
	General liability	472			452			1,376			1,333
	Commercial multi-peril	774			779			2,292			2,320
	Other	10			11			31			29
	Total Domestic	3,107			3,046			9,190			9,006
	International	553			279			1,659			795
	Total Business and International Insurance	3,660			3,325			10,849			9,801
	Bond & Specialty Insurance:
	Fidelity and surety	240			235			700			683
	General liability	243			227			721			661
	Other	44			44			133			132
	Total Bond & Specialty Insurance	527			506			1,554			1,476
	Personal Insurance:
	Automobile	835			855			2,471			2,591
	Homeowners and other	961			980			2,860			2,918
	Total Personal Insurance	1,796			1,835			5,331			5,509
	Total earned premiums	5,983			5,666			17,734			16,786
	Net investment income	719			657			2,150			2,014
	Fee income	110			107			329			286
	Other revenues	34			47			109			217
	Total operating revenues for reportable segments	6,846			6,477			20,322			19,303
	Other revenues	—			(3		)	—			(4		)
	Net realized investment gains (losses)	40			(22		)	57			155
	Total consolidated revenues	$	6,886		$	6,452		$	20,379		$	19,454
	Income reconciliation, net of tax
	Total operating income for reportable segments	$	956		$	948		$	2,810		$	2,773
	Interest Expense and Other (1)	(63		)	(65		)	(192		)	(187		)
	Total operating income	893			883			2,618			2,586
	Net realized investment gains (losses)	26			(19		)	36			99
	Total consolidated net income	$	919		$	864		$	2,654		$	2,685
	(1)           The primary component of Interest Expense and Other is after-tax interest expense of $60 million and $59 million for the three months ended September 30, 2014 and 2013, respectively, and $180 million and $175 million for the nine months ended September 30, 2014 and 2013, respectively.
Asset reconciliation [Table Text Block]	'
	(in millions)	September 30,			December 31,
		2014			2013
	Asset reconciliation:
	Business and International Insurance	$	83,218		$	82,789
	Bond & Specialty Insurance	7,871			7,648
	Personal Insurance	12,975			12,870
	Total assets for reportable segments	104,064			103,307
	Other assets (1)	458			505
	Total consolidated assets	$	104,522		$	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)	9 Months Ended
	Sep. 30, 2014
Investments disclosure	'
Amortized cost and fair value of investments in fixed maturities [Table Text Block]	'
		Amortized		Gross Unrealized				Fair
	(at September 30, 2014, in millions)	Cost		Gains		Losses		Value
	U.S. Treasury securities and obligations of U.S. government and government agencies and authorities	$	2,050	$	31	$	7	$	2,074
	Obligations of states, municipalities and political subdivisions:
	Pre-refunded	7,459		348		—		7,807
	All other	24,787		1,336		33		26,090
	Total obligations of states, municipalities and political subdivisions	32,246		1,684		33		33,897
	Debt securities issued by foreign governments	2,435		34		1		2,468
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,114		167		7		2,274
	All other corporate bonds	22,072		828		126		22,774
	Redeemable preferred stock	126		9		—		135
	Total	$	61,043	$	2,753	$	174	$	63,622
		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 September 30, 2014, in millions)	Cost		Gains		Losses		Value
	Public common stock	$	396	$	312	$	—	$	708
	Non-redeemable preferred stock	213		30		2		241
	Total	$	609	$	342	$	2	$	949
				Gross Unrealized				Fair
	(at December 31, 2013, in millions)	Cost		Gains		Losses		Value
	Public 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 September 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	$	172	$	2	$	105	$	5		$	277		$	7
	Obligations of states, municipalities and political subdivisions	1,033		1		1,736		32			2,769			33
	Debt securities issued by foreign governments	226		—		143		1			369			1
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	157		1		257		6			414			7
	All other corporate bonds	3,161		34		2,658		92			5,819			126
	Total fixed maturities	4,749		38		4,899		136			9,648			174
	Equity securities
	Public common stock	36		—		1		—			37			—
	Non-redeemable preferred stock	108		2		—		—			108			2
	Total equity securities	144		2		1		—			145			2
	Total	$	4,893	$	40	$	4,900	$	136		$	9,793		$	176
		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
	Public 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 September 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	—		—		2		2			4
	Total fixed maturities	—		—		2		2			4
	Equity securities	—		—		—		—			—
	Total	$	—	$	—	$	2	$	2		$	4
Impairment charges included in net realized investment gains (losses) [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		September 30,				September 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		2
	All other corporate bonds	9		—		12		—
	Redeemable preferred stock	—		—		—		—
	Total fixed maturities	9		—		13		2
	Equity securities
	Public common stock	1		2		6		3
	Non-redeemable preferred stock	—		—		—		—
	Total equity securities	1		2		6		3
	Other investments	—		1		1		5
	Total	$	10	$	3	$	20	$	10
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 September 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	$	43	$	—	$	—	$	—		$	1		$	44
	All other corporate bonds	66		—		—		(5		)	—			61
	Total fixed maturities	$	109	$	—	$	—	$	(5	)	$	1		$	105
	(for the nine months ended September 30, in
	millions)
	Fixed maturities
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	53	$	—	$	1	$	(3	)	$	(7	)	$	44
	All other corporate bonds	65		—		3		(5		)	(2		)	61
	Total fixed maturities	$	118	$	—	$	4	$	(8	)	$	(9	)	$	105
		2013
	(for the three months ended September 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	$	—	$	—	$	—		$	(2	)	$	53
	All other corporate bonds	70		—		—		—			(1		)	69
	Total fixed maturities	$	125	$	—	$	—	$	—		$	(3	)	$	122
	(for the nine months ended September 30, in
	millions)
	Fixed maturities
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	$	55	$	—	$	2	$	—		$	(4	)	$	53
	All other corporate bonds	72		—		—		—			(3		)	69
	Total fixed maturities	$	127	$	—	$	2	$	—		$	(7	)	$	122

Fair_Value_Measurements_tables

Fair Value Measurements (tables)	9 Months Ended
	Sep. 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 September 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	$	2,074		$	2,062		$	12		$	—
	Obligations of states, municipalities and political subdivisions	33,897			24			33,860			13
	Debt securities issued by foreign governments	2,468			9			2,459			—
	Mortgage-backed securities, collateralized mortgage obligations and pass-through securities	2,274			—			2,274			—
	All other corporate bonds	22,774			17			22,511			246
	Redeemable preferred stock	135			5			122			8
	Total fixed maturities	63,622			2,117			61,238			267
	Equity securities
	Public common stock	708			708			—			—
	Non-redeemable preferred stock	241			93			148			—
	Total equity securities	949			801			148			—
	Other investments	56			19			—			37
	Total	$	64,627		$	2,937		$	61,386		$	304
	(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
	Public 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 September 30, 2014 (in millions)	Fixed			Other			Total
		Maturities			Investments
	Balance at June 30, 2014	$	264		$	36		$	300
	Total realized and unrealized investment gains (losses):
	Reported in net realized investment gains (losses) (1)	1			—			1
	Reported in increases (decreases) in other comprehensive income	(2		)	1			(1		)
	Purchases, sales and settlements/maturities:
	Purchases	74			—			74
	Sales	—			—			—
	Settlements/maturities	(13		)	—			(13		)
	Gross transfers into Level 3	8			—			8
	Gross transfers out of Level 3	(65		)	—			(65		)
	Balance at September 30, 2014	$	267		$	37		$	304
	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.
	Nine Months Ended September 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 (losses) (1)	3			1			4
	Reported in increases (decreases) in other comprehensive income	(2		)	1			(1		)
	Purchases, sales and settlements/maturities:
	Purchases	216			1			217
	Sales	(1		)	—			(1		)
	Settlements/maturities	(73		)	—			(73		)
	Gross transfers into Level 3	8			—			8
	Gross transfers out of Level 3	(139		)	—			(139		)
	Balance at September 30, 2014	$	267		$	37		$	304
	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 September 30, 2014, in millions)	Carrying			Fair			Level 1			Level 2		Level 3
		Value			Value
	Financial assets:
	Short-term securities	$	5,033		$	5,033		$	1,265		$	3,719	$	49
	Financial liabilities:
	Debt	$	6,248		$	7,390		$	—		$	7,390	$	—
	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)	9 Months Ended
	Sep. 30, 2014
Goodwill and Other Intangible Assets disclosure	'
Goodwill by segment [Table Text Block]	'
	(in millions)	September 30,		December 31,
		2014		2013
	Business and International Insurance (1)	$	2,486	$	2,499
	Bond & Specialty Insurance	495		495
	Personal Insurance	613		613
	Other	27		27
	Total	$	3,621	$	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 September 30, 2014, in millions)	Gross		Accumulated		Net
		Carrying		Amortization
		Amount
	Intangibles subject to amortization
	Customer-related	$	460	$	438	$	22
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles (1)	209		132		77
	Total intangible assets subject to amortization	669		570		99
	Intangible assets not subject to amortization	217		—		217
	Total other intangible assets	$	886	$	570	$	316
	(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				Nine Months Ended
		September 30,				September 30,
	(in millions)	2014		2013		2014		2013
	Customer-related	$	8	$	8	$	24	$	23
	Fair value adjustment on claims and claim adjustment expense reserves, reinsurance recoverables and other contract-related intangibles	4		3		11		11
	Total amortization expense	$	12	$	11	$	35	$	34

Other_Comprehensive_Income_and1

Other Comprehensive Income and Accumulated Other Comprehensive Income (tables)	9 Months Ended
	Sep. 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	610			—			—			(130		)	480
	Amounts reclassified from AOCI	(20		)	2			28			—			10
	Net OCI, current period	590			2			28			(130		)	490
	Balance, September 30, 2014	$	1,715		$	199		$	(403	)	$	(211	)	$	1,300
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 September 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	(154	)	$	(204	)
	Income tax benefit	(55		)	(72		)
	Net of taxes	(99		)	(132		)
	Having credit losses recognized in the consolidated statement of income	1			(2		)
	Income tax expense (benefit)	1			(1		)
	Net of taxes	—			(1		)
	Net changes in benefit plan assets and obligations	15			24
	Income tax expense	5			9
	Net of taxes	10			15
	Net changes in unrealized foreign currency translation	(203		)	112
	Income tax expense (benefit)	(30		)	9
	Net of taxes	(173		)	103
	Total other comprehensive loss	(341		)	(70		)
	Total income tax benefit	(79		)	(55		)
	Total other comprehensive loss, net of taxes	$	(262	)	$	(15	)
	(for the nine months ended September 30, in millions)	2014			2013
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	$	901		$	(2,370	)
	Income tax expense (benefit)	311			(824		)
	Net of taxes	590			(1,546		)
	Having credit losses recognized in the consolidated statement of income	4			2
	Income tax expense	2			—
	Net of taxes	2			2
	Net changes in benefit plan assets and obligations	45			78
	Income tax expense	17			28
	Net of taxes	28			50
	Net changes in unrealized foreign currency translation	(149		)	(57		)
	Income tax benefit	(19		)	(20		)
	Net of taxes	(130		)	(37		)
	Total other comprehensive income (loss)	801			(2,347		)
	Total income tax expense (benefit)	311			(816		)
	Total other comprehensive income (loss), net of taxes	$	490		$	(1,531	)
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 September 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)	$	(1	)	$	(4	)
	Income tax expense (2)	—			(1		)
	Net of taxes	(1		)	(3		)
	Having credit losses recognized in the consolidated statement of income (1)	—			—
	Income tax benefit (2)	—			—
	Net of taxes	—			—
	Reclassification adjustment related to benefit plan assets and obligations (3)	15			26
	Income tax benefit (2)	5			9
	Net of taxes	10			17
	Reclassification adjustment related to foreign currency translation (1)	—			11
	Income tax benefit (2)	—			—
	Net of taxes	—			11
	Total reclassifications	14			33
	Total income tax benefit	5			8
	Total reclassifications, net of taxes	$	9		$	25
	(1)     (Increases) decreases net realized investment gains (losses) 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 nine months ended September 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)	$	(30	)	$	(55	)
	Income tax expense (2)	(10		)	(19		)
	Net of taxes	(20		)	(36		)
	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)	45			78
	Income tax benefit (2)	17			27
	Net of taxes	28			51
	Reclassification adjustment related to foreign currency translation (1)	—			8
	Income tax benefit (2)	—			—
	Net of taxes	—			8
	Total reclassifications	19			33
	Total income tax benefit	9			9
	Total reclassifications, net of taxes	$	10		$	24
	(1)     (Increases) decreases net realized investment gains (losses) 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)	9 Months Ended
	Sep. 30, 2014
Earnings per Share disclosure	'
Earnings per share reconciliation [Table Text Block]	'
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
	(in millions, except per share amounts)	2014			2013			2014			2013
	Basic and Diluted
	Net income, as reported	$	919		$	864		$	2,654		$	2,685
	Participating share-based awards — allocated income	(7		)	(6		)	(19		)	(20		)
	Net income available to common shareholders — basic and diluted	$	912		$	858		$	2,635		$	2,665
	Common Shares
	Basic
	Weighted average shares outstanding	335.1			368.9			342.9			374.1
	Diluted
	Weighted average shares outstanding	335.1			368.9			342.9			374.1
	Weighted average effects of dilutive securities — stock options and performance shares	3.8			4			3.6			4
	Total	338.9			372.9			346.5			378.1
	Net Income per Common Share
	Basic	$	2.72		$	2.33		$	7.68		$	7.12
	Diluted	$	2.69		$	2.3		$	7.6		$	7.05

ShareBased_Incentive_Compensat1

Share-Based Incentive Compensation (table)	9 Months Ended
	Sep. 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)	7,597,990	$	58.48	6.0 years	$	269
	Exercisable at end of period	4,775,291	$	50.4	4.6 years	$	208
	(1)     Represents awards for which the requisite service has been rendered, including those that are retirement eligible.

Pension_Plans_Retirement_Benef1

Pension Plans, Retirement Benefits and Savings Plans (table)	9 Months Ended
	Sep. 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]	'
	(for the three months ended September 30, in	Pension Plans						Postretirement Benefit Plans
	millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	27		$	30		$	—		$	—
	Interest cost on benefit obligation	38			33			3			3
	Expected return on plan assets	(55		)	(52		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			(1		)	(1		)
	Net actuarial (gain) loss	17			27			(1		)	—
	Net periodic benefit cost	$	27		$	38		$	1		$	2
	(for the nine months ended September 30, in	Pension Plans						Postretirement Benefit Plans
	millions)	2014			2013			2014			2013
	Net Periodic Benefit Cost:
	Service cost	$	82		$	89		$	—		$	—
	Interest cost on benefit obligation	113			99			8			7
	Expected return on plan assets	(164		)	(156		)	—			—
	Amortization of unrecognized:
	Prior service benefit	—			—			(2		)	(2		)
	Net actuarial (gain) loss	49			80			(2		)	—
	Net periodic benefit cost	$	80		$	112		$	4		$	5

Consolidating_Financial_Statem1

Consolidating Financial Statements (Unaudited) (tables)	9 Months Ended
	Sep. 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 September 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	4,064		$	1,919		$	—		$	—		$	5,983
	Net investment income	479			239			1			—			719
	Fee income	110			—			—			—			110
	Net realized investment gains (losses)(1)	(2		)	41			1			—			40
	Other revenues	28			6			—			—			34
	Total revenues	4,679			2,205			2			—			6,886
	Claims and expenses
	Claims and claim adjustment expenses	2,359			1,161			—			—			3,520
	Amortization of deferred acquisition costs	642			342			—			—			984
	General and administrative expenses	716			311			4			—			1,031
	Interest expense	12			—			81			—			93
	Total claims and expenses	3,729			1,814			85			—			5,628
	Income (loss) before income taxes	950			391			(83		)	—			1,258
	Income tax expense (benefit)	263			106			(30		)	—			339
	Net income of subsidiaries	—			—			972			(972		)	—
	Net income	$	687		$	285		$	919		$	(972	)	$	919
	(1)     Total other-than-temporary impairments (OTTI) for the three months ended September 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 (losses)	$	(8	)	$	—		$	—		$	—		$	(8	)
	OTTI losses recognized in net realized investment gains (losses)	$	(9	)	$	(1	)	$	—		$	—		$	(10	)
	OTTI gains recognized in OCI	$	1		$	1		$	—		$	—		$	2
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the three months ended September 30, 2013
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	3,839		$	1,827		$	—		$	—		$	5,666
	Net investment income	438			217			2			—			657
	Fee income	106			1			—			—			107
	Net realized investment gains (losses) (1)	3			(25		)	—			—			(22		)
	Other revenues	38			6			—			—			44
	Total revenues	4,424			2,026			2			—			6,452
	Claims and expenses
	Claims and claim adjustment expenses	2,214			1,083			—			—			3,297
	Amortization of deferred acquisition costs	640			313			—			—			953
	General and administrative expenses	646			286			2			—			934
	Interest expense	12			—			79			—			91
	Total claims and expenses	3,512			1,682			81			—			5,275
	Income (loss) before income taxes	912			344			(79		)	—			1,177
	Income tax expense (benefit)	248			93			(28		)	—			313
	Net income of subsidiaries	—			—			915			(915		)	—
	Net income	$	664		$	251		$	864		$	(915	)	$	864
	(1)     Total other-than-temporary impairments (OTTI) for the three months ended September 30, 2013, 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 (losses)	$	1		$	(1	)	$	—		$	—		$	—
	OTTI losses recognized in net realized investment gains (losses)	$	(2	)	$	(1	)	$	—		$	—		$	(3	)
	OTTI gains recognized in OCI	$	3		$	—		$	—		$	—		$	3
	(2)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF INCOME (Unaudited)
	For the nine months ended September 30, 2014
	(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
					Subsidiaries
	Revenues
	Premiums	$	12,028		$	5,706		$	—		$	—		$	17,734
	Net investment income	1,451			695			4			—			2,150
Fee income	328			1			—			—			329
Net realized investment gains (1)	4			50			3			—			57
Other revenues	93			16			—			—			109
Total revenues	13,904			6,468			7			—			20,379
Claims and expenses
Claims and claim adjustment expenses	7,149			3,512			—			—			10,661
Amortization of deferred acquisition costs	1,927			972			—			—			2,899
General and administrative expenses	2,026			876			11			—			2,913
Interest expense	36			—			241			—			277
Total claims and expenses	11,138			5,360			252			—			16,750
Income (loss) before income taxes	2,766			1,108			(245		)	—			3,629
Income tax expense (benefit)	770			291			(86		)	—			975
Net income of subsidiaries	—			—			2,813			(2,813		)	—
Net income	$	1,996		$	817		$	2,654		$	(2,813	)	$	2,654
(1)     Total other-than-temporary impairments (OTTI) for the nine months ended September 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 losses	$	(11	)	$	(5	)	$	—		$	—		$	(16	)
OTTI losses recognized in net realized investment gains	$	(14	)	$	(6	)	$	—		$	—		$	(20	)
OTTI gains recognized in OCI	$	3		$	1		$	—		$	—		$	4
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
CONSOLIDATING STATEMENT OF INCOME (Unaudited)
For the nine months ended September 30, 2013
(in millions)	TPC			Other			Travelers (2)			Eliminations			Consolidated
				Subsidiaries
Revenues
Premiums	$	11,384		$	5,402		$	—		$	—		$	16,786
Net investment income	1,350			659			5			—			2,014
Fee income	284			2			—			—			286
Net realized investment gains (1)	120			34			1			—			155
Other revenues	170			43			—			—			213
Total revenues	13,308			6,140			6			—			19,454
Claims and expenses
Claims and claim adjustment expenses	6,684			3,296			—			—			9,980
Amortization of deferred acquisition costs	1,912			939			—			—			2,851
General and administrative expenses	1,915			861			4			—			2,780
Interest expense	41			—			228			—			269
Total claims and expenses	10,552			5,096			232			—			15,880
Income (loss) before income taxes	2,756			1,044			(226		)	—			3,574
Income tax expense (benefit)	700			269			(80		)	—			889
Net income of subsidiaries	—			—			2,831			(2,831		)	—
Net income	$	2,056		$	775		$	2,685		$	(2,831	)	$	2,685
(1)     Total other-than-temporary impairments (OTTI) for the nine months ended September 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)	$	(3	)	$	2		$	—		$	—		$	(1	)
OTTI losses recognized in net realized investment gains	$	(7	)	$	(3	)	$	—		$	—		$	(10	)
OTTI gains recognized in OCI	$	4		$	5		$	—		$	—		$	9
(2)     The Travelers Companies, Inc., excluding its subsidiaries.
Consolidating Statement of Comprehensive Income (Unaudited) [Table Text Block]	'
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
	For the three months ended September 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	687		$	285		$	919		$	(972	)	$	919
	Other comprehensive income (loss):
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	(118		)	(35		)	(1		)	—			(154		)
	Having credit losses recognized in the consolidated statement of income	2			(1		)	—			—			1
	Net changes in benefit plan assets and obligations	—			1			14			—			15
	Net changes in unrealized foreign currency translation	(120		)	(83		)	—			—			(203		)
	Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(236		)	(118		)	13			—			(341		)
	Income tax expense (benefit)	(62		)	(22		)	5			—			(79		)
	Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(174		)	(96		)	8			—			(262		)
	Other comprehensive loss of subsidiaries	—			—			(270		)	270			—
	Other comprehensive loss	(174		)	(96		)	(262		)	270			(262		)
	Comprehensive income	$	513		$	189		$	657		$	(702	)	$	657
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
	For the three months ended September 30, 2013
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	664		$	251		$	864		$	(915	)	$	864
	Other comprehensive income (loss):
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	(138		)	(71		)	5			—			(204		)
	Having credit losses recognized in the consolidated statement of income	(1		)	(1		)	—			—			(2		)
	Net changes in benefit plan assets and obligations	—			(1		)	25			—			24
	Net changes in unrealized foreign currency translation	26			86			—			—			112
	Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(113		)	13			30			—			(70		)
	Income tax expense (benefit)	(46		)	(20		)	11			—			(55		)
	Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(67		)	33			19			—			(15		)
	Other comprehensive loss of subsidiaries	—			—			(34		)	34			—
	Other comprehensive income (loss)	(67		)	33			(15		)	34			(15		)
	Comprehensive income	$	597		$	284		$	849		$	(881	)	$	849
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
	For the nine months ended September 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	1,996		$	817		$	2,654		$	(2,813	)	$	2,654
	Other comprehensive income:
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	632			266			3			—			901
	Having credit losses recognized in the consolidated statement of income	11			(7		)	—			—			4
	Net changes in benefit plan assets and obligations	—			1			44			—			45
	Net changes in unrealized foreign currency translation	(94		)	(55		)	—			—			(149		)
	Other comprehensive income before income taxes and other comprehensive income of subsidiaries	549			205			47			—			801
	Income tax expense	210			84			17			—			311
	Other comprehensive income, net of taxes, before other comprehensive income of subsidiaries	339			121			30			—			490
	Other comprehensive income of subsidiaries	—			—			460			(460		)	—
	Other comprehensive income	339			121			490			(460		)	490
	Comprehensive income	$	2,335		$	938		$	3,144		$	(3,273	)	$	3,144
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (Unaudited)
	For the nine months ended September 30, 2013
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Net income	$	2,056		$	775		$	2,685		$	(2,831	)	$	2,685
	Other comprehensive income (loss):
	Changes in net unrealized gains on investment securities:
	Having no credit losses recognized in the consolidated statement of income	(1,735		)	(647		)	12			—			(2,370		)
	Having credit losses recognized in the consolidated statement of income	4			(2		)	—			—			2
Net changes in benefit plan assets and obligations	1			2			75			—			78
Net changes in unrealized foreign currency translation	(35		)	(22		)	—			—			(57		)
Other comprehensive income (loss) before income taxes and other comprehensive loss of subsidiaries	(1,765		)	(669		)	87			—			(2,347		)
Income tax expense (benefit)	(616		)	(231		)	31			—			(816		)
Other comprehensive income (loss), net of taxes, before other comprehensive loss of subsidiaries	(1,149		)	(438		)	56			—			(1,531		)
Other comprehensive loss of subsidiaries	—			—			(1,587		)	1,587			—
Other comprehensive loss	(1,149		)	(438		)	(1,531		)	1,587			(1,531		)
Comprehensive income	$	907		$	337		$	1,154		$	(1,244	)	$	1,154
(1)     The Travelers Companies, Inc., excluding its subsidiaries.
Consolidating Balance Sheet (Unaudited) [Table Text Block]	'
	CONSOLIDATING BALANCE SHEET (Unaudited)
	At September 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Assets
	Fixed maturities, available for sale, at fair value (amortized cost $61,043)	$	43,493		$	20,090		$	39		$	—		$	63,622
	Equity securities, available for sale, at fair value (cost $609)	271			542			136			—			949
	Real estate investments	56			893			—			—			949
	Short-term securities	2,413			812			1,808			—			5,033
	Other investments	2,658			978			1			—			3,637
	Total investments	48,891			23,315			1,984			—			74,190
	Cash	216			149			2			—			367
	Investment income accrued	451			206			6			—			663
	Premiums receivable	4,353			2,086			—			—			6,439
	Reinsurance recoverables	6,214			3,065			—			—			9,279
	Ceded unearned premiums	738			110			—			—			848
	Deferred acquisition costs	1,666			224			—			—			1,890
	Contractholder receivables	3,274			1,093			—			—			4,367
	Goodwill	2,609			1,012			—			—			3,621
	Other intangible assets	225			91			—			—			316
	Investment in subsidiaries	—			—			28,950			(28,950		)	—
	Other assets	2,011			363			168			—			2,542
	Total assets	$	70,648		$	31,714		$	31,110		$	(28,950	)	$	104,522
	Liabilities
	Claims and claim adjustment expense reserves	$	33,414		$	16,988		$	—		$	—		$	50,402
	Unearned premium reserves	8,463			3,718			—			—			12,181
	Contractholder payables	3,274			1,093			—			—			4,367
	Payables for reinsurance premiums	286			205			—			—			491
	Deferred taxes	24			44			54			—			122
	Debt	692			—			5,656			—			6,348
	Other liabilities	4,039			1,160			91			—			5,290
	Total liabilities	50,192			23,208			5,801			—			79,201
	Shareholders’ equity
	Common stock (1,750.0 shares authorized; 331.4 shares issued and outstanding)	—			390			21,764			(390		)	21,764
	Additional paid-in capital	11,634			6,502			—			(18,136		)	—
	Retained earnings	7,716			1,070			26,382			(8,774		)	26,394
	Accumulated other comprehensive income	1,106			544			1,300			(1,650		)	1,300
	Treasury stock, at cost (427.6 shares)	—			—			(24,137		)	—			(24,137		)
	Total shareholders’ equity	20,456			8,506			25,309			(28,950		)	25,321
	Total liabilities and shareholders’ equity	$	70,648		$	31,714		$	31,110		$	(28,950	)	$	104,522
	(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 nine months ended September 30, 2014
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Cash flows from operating activities
	Net income	$	1,996		$	817		$	2,654		$	(2,813	)	$	2,654
	Net adjustments to reconcile net income to net cash provided by operating activities	391			(73		)	322			(126		)	514
	Net cash provided by operating activities	2,387			744			2,976			(2,939		)	3,168
	Cash flows from investing activities
	Proceeds from maturities of fixed maturities	4,886			3,088			1			—			7,975
	Proceeds from sales of investments:
	Fixed maturities	511			415			1			—			927
	Equity securities	83			41			4			—			128
	Real estate investments	1			4			—			—			5
	Other investments	317			295			—			—			612
	Purchases of investments:
	Fixed maturities	(4,888		)	(3,345		)	(4		)	—			(8,237		)
	Equity securities	(3		)	(38		)	(6		)	—			(47		)
	Real estate investments	(22		)	(19		)	—			—			(41		)
	Other investments	(292		)	(114		)	—			—			(406		)
	Net purchases of short-term securities	(552		)	(326		)	(285		)	—			(1,163		)
	Securities transactions in course of settlement	66			53			—			—			119
	Acquisitions, net of cash acquired	(9		)	(3		)	—			—			(12		)
	Other	(256		)	(6		)	—			—			(262		)
	Net cash provided by (used in) investing activities	(158		)	45			(289		)	—			(402		)
	Cash flows from financing activities
	Dividends paid to shareholders	—			—			(549		)	—			(549		)
	Issuance of common stock — employee share options	—			—			154			—			154
	Treasury stock acquired — share repurchase authorization	—			—			(2,275		)	—			(2,275		)
	Treasury stock acquired — net employee share-based compensation	—			—			(56		)	—			(56		)
	Excess tax benefits from share-based payment arrangements	—			—			38			—			38
	Dividends paid to parent company	(2,150		)	(789		)	—			2,939			—
	Net cash used in financing activities	(2,150		)	(789		)	(2,688		)	2,939			(2,688		)
	Effect of exchange rate changes on cash	—			(5		)	—			—			(5		)
	Net increase (decrease) in cash	79			(5		)	(1		)	—			73
	Cash at beginning of year	137			154			3			—			294
	Cash at end of period	$	216		$	149		$	2		$	—		$	367
	Supplemental disclosure of cash flow information
	Income taxes paid (received)	$	684		$	215		$	(114	)	$	—		$	785
	Interest paid	$	40		$	—		$	177		$	—		$	217
	(1)     The Travelers Companies, Inc., excluding its subsidiaries.
	CONSOLIDATING STATEMENT OF CASH FLOWS (Unaudited)
	For the nine months ended September 30, 2013
	(in millions)	TPC			Other			Travelers (1)			Eliminations			Consolidated
					Subsidiaries
	Cash flows from operating activities
	Net income	$	2,056		$	775		$	2,685		$	(2,831	)	$	2,685
	Net adjustments to reconcile net income to net cash provided by operating activities	(348		)	224			(1,531		)	1,859			204
	Net cash provided by operating activities	1,708			999			1,154			(972		)	2,889
	Cash flows from investing activities
	Proceeds from maturities of fixed maturities	4,096			1,820			1			—			5,917
	Proceeds from sales of investments:
	Fixed maturities	590			565			5			—			1,160
	Equity securities	21			36			—			—			57
	Other investments	337			208			—			—			545
	Purchases of investments:
	Fixed maturities	(4,339		)	(2,146		)	(7		)	—			(6,492		)
	Equity securities	(20		)	(29		)	(1		)	—			(50		)
	Real estate investments	—			(65		)	—			—			(65		)
	Other investments	(222		)	(90		)	—			—			(312		)
	Net sales (purchases) of short-term securities	(1,563		)	(492		)	162			—			(1,893		)
	Securities transactions in course of settlement	182			98			—			—			280
	Other	(250		)	(4		)	—			—			(254		)
Net cash provided by (used in) investing activities	(1,168		)	(99		)	160			—			(1,107		)
Cash flows from financing activities
Payment of debt	(500		)	—			—			—			(500		)
Issuance of debt	—			—			494			—			494
Dividends paid to shareholders	—			—			(549		)	—			(549		)
Issuance of common stock — employee share options	—			—			158			—			158
Treasury stock acquired — share repurchase authorization	—			—			(1,400		)	—			(1,400		)
Treasury stock acquired — net employee share-based compensation	—			—			(60		)	—			(60		)
Excess tax benefits from share-based payment arrangements	—			—			43			—			43
Capital contributions	500			—			—			(500		)	—
Dividends paid to parent company	(587		)	(885		)	—			1,472			—
Net cash used in financing activities	(587		)	(885		)	(1,314		)	972			(1,814		)
Effect of exchange rate changes on cash	—			(3		)	—			—			(3		)
Net increase (decrease) in cash	(47		)	12			—			—			(35		)
Cash at beginning of year	177			151			2			—			330
Cash at end of period	$	130		$	163		$	2		$	—		$	295
Supplemental disclosure of cash flow information
Income taxes paid (received)	$	691		$	236		$	(203	)	$	—		$	724
Interest paid	$	52		$	—		$	154		$	—		$	206
(1)     The Travelers Companies, Inc., excluding its subsidiaries.

Basis_of_Presentation_and_Acco2

Basis of Presentation and Accounting Policies (details)	9 Months Ended
	Sep. 30, 2014
	item
Basis of Presentation and Accounting Policies disclosure	'
Number of reportable business segments impacted by announced realignment	2
Number of reportable business segments	3

Basis_of_Presentation_and_Acco3

Basis of Presentation and Accounting Policies (details) - Dominion (USD $)	Sep. 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	$3,621,000,000	$3,634,000,000	$273,000,000

Basis_of_Presentation_and_Acco4

Basis of Presentation and Accounting Policies (details) - Equity Method Investment (JMalucelli - Brazilian joint venture [Member])	Sep. 30, 2014
JMalucelli - Brazilian joint venture [Member]	'
Equity method investment	'
Percent of common stock owned	49.50%

Segment_Information_details

Segment Information (details) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Segment reporting information	'		'		'		'
Premiums	$5,983		$5,666		$17,734		$16,786
Net investment income	719		657		2,150		2,014
Fee income	110		107		329		286
Other revenues	34		44		109		213
Operating income	893		883		2,618		2,586
Net realized investment gains (losses)	40	[1]	-22	[1]	57	[1]	155	[1]
Total revenues	6,886		6,452		20,379		19,454
Net realized investment gains (losses), net of tax	26		-19		36		99
Net income	919		864		2,654		2,685
Reportable Segments [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	5,983		5,666		17,734		16,786
Net investment income	719		657		2,150		2,014
Fee income	110		107		329		286
Other revenues	34		47		109		217
Total operating revenues	6,846		6,477		20,322		19,303
Operating income	956		948		2,810		2,773
Reportable Segments [Member] | Business and International Insurance [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	3,660		3,325		10,849		9,801
Net investment income	557		504		1,666		1,544
Fee income	110		107		329		286
Other revenues	10		8		32		135
Total operating revenues	4,337		3,944		12,876		11,766
Operating income	552		566		1,717		1,773
Reportable Segments [Member] | Business and International Insurance [Member] | International [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	553		279		1,659		795
Reportable Segments [Member] | Business and International Insurance [Member] | Domestic [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	3,107		3,046		9,190		9,006
Reportable Segments [Member] | Business and International Insurance [Member] | Domestic [Member] | Workers' compensation [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	928		896		2,759		2,640
Reportable Segments [Member] | Business and International Insurance [Member] | Domestic [Member] | Automobile [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	481		476		1,422		1,425
Reportable Segments [Member] | Business and International Insurance [Member] | Domestic [Member] | Commercial Property [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	442		432		1,310		1,259
Reportable Segments [Member] | Business and International Insurance [Member] | Domestic [Member] | General Liability [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	472		452		1,376		1,333
Reportable Segments [Member] | Business and International Insurance [Member] | Domestic [Member] | Commercial multi-peril [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	774		779		2,292		2,320
Reportable Segments [Member] | Business and International Insurance [Member] | Domestic [Member] | Other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	10		11		31		29
Reportable Segments [Member] | Bond & Specialty Insurance [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	527		506		1,554		1,476
Net investment income	64		63		192		195
Other revenues	5		5		15		15
Total operating revenues	596		574		1,761		1,686
Operating income	165		120		511		399
Reportable Segments [Member] | Bond & Specialty Insurance [Member] | General Liability [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	243		227		721		661
Reportable Segments [Member] | Bond & Specialty Insurance [Member] | Other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	44		44		133		132
Reportable Segments [Member] | Bond & Specialty Insurance [Member] | Fidelity and surety [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	240		235		700		683
Reportable Segments [Member] | Personal Insurance [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	1,796		1,835		5,331		5,509
Net investment income	98		90		292		275
Other revenues	19		34		62		67
Total operating revenues	1,913		1,959		5,685		5,851
Operating income	239		262		582		601
Reportable Segments [Member] | Personal Insurance [Member] | Automobile [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	835		855		2,471		2,591
Reportable Segments [Member] | Personal Insurance [Member] | Homeowners and other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Premiums	961		980		2,860		2,918
Interest Expense & Other [Member]	'		'		'		'
Segment reporting information	'		'		'		'
Other revenues	'		-3		'		-4
Operating income	-63		-65		-192		-187
After-tax interest expense	$60		$59		$180		$175
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(8) million and $0 million for the three months ended September 30, 2014 and 2013, respectively, and $(16) million and $(1) million for the nine months ended September 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(10) million and $(3) million for the three months ended September 30, 2014 and 2013, respectively, and $(20) million and $(10) million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in net realized investment gains (losses). In addition, unrealized gains from other changes in total OTTI of $2 million and $3 million for the three months ended September 30, 2014 and 2013, respectively, and $4 million and $9 million for the nine months ended September 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 $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets by segment	'	'
Total assets	$104,522	$103,812
Reportable Segments [Member]	'	'
Assets by segment	'	'
Total assets	104,064	103,307
Reportable Segments [Member] | Business and International Insurance [Member]	'	'
Assets by segment	'	'
Total assets	83,218	82,789
Reportable Segments [Member] | Bond & Specialty Insurance [Member]	'	'
Assets by segment	'	'
Total assets	7,871	7,648
Reportable Segments [Member] | Personal Insurance [Member]	'	'
Assets by segment	'	'
Total assets	12,975	12,870
Interest Expense & Other [Member]	'	'
Assets by segment	'	'
Total assets	$458	$505

Investments_details

Investments (details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Investment disclosure details	'	'
Fixed maturities, amortized cost	$61,043	$62,196
Fixed maturities, at fair value	63,622	63,956
Equity securities, cost	609	686
Equity securities, at fair value	949	943
Continuous unrealized loss position less than 12 months, fair value	4,893	13,836
Continuous unrealized loss position less than 12 months, gross unrealized losses	40	592
Continuous unrealized loss position 12 months or longer, fair value	4,900	875
Continuous unrealized loss position 12 months or longer, gross unrealized losses	136	111
Continuous unrealized loss position, total, fair value	9,793	14,711
Continuous unrealized loss position, total, gross unrealized losses	176	703
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 6 months, 12 months or less	2	'
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	4	'
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	61,043	62,196
Gross unrealized gains	2,753	2,460
Gross unrealized losses	174	700
Fixed maturities, at fair value	63,622	63,956
Continuous unrealized loss position less than 12 months, fair value	4,749	13,636
Continuous unrealized loss position less than 12 months, gross unrealized losses	38	589
Continuous unrealized loss position 12 months or longer, fair value	4,899	875
Continuous unrealized loss position 12 months or longer, gross unrealized losses	136	111
Continuous unrealized loss position, total, fair value	9,648	14,511
Continuous unrealized loss position, total, gross unrealized losses	174	700
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 6 months, 12 months or less	2	'
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	4	'
U.S. Treasury securities and obligations of U.S. government and government agencies and authorities [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	2,050	2,288
Gross unrealized gains	31	39
Gross unrealized losses	7	12
Fixed maturities, at fair value	2,074	2,315
Continuous unrealized loss position less than 12 months, fair value	172	433
Continuous unrealized loss position less than 12 months, gross unrealized losses	2	12
Continuous unrealized loss position 12 months or longer, fair value	105	'
Continuous unrealized loss position 12 months or longer, gross unrealized losses	5	'
Continuous unrealized loss position, total, fair value	277	433
Continuous unrealized loss position, total, gross unrealized losses	7	12
Obligations of states, municipalities and political subdivisions [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	32,246	34,488
Gross unrealized gains	1,684	1,436
Gross unrealized losses	33	362
Fixed maturities, at fair value	33,897	35,562
Continuous unrealized loss position less than 12 months, fair value	1,033	4,785
Continuous unrealized loss position less than 12 months, gross unrealized losses	1	298
Continuous unrealized loss position 12 months or longer, fair value	1,736	432
Continuous unrealized loss position 12 months or longer, gross unrealized losses	32	64
Continuous unrealized loss position, total, fair value	2,769	5,217
Continuous unrealized loss position, total, gross unrealized losses	33	362
Obligations of states, municipalities and political subdivisions, pre-refunded [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	7,459	9,074
Gross unrealized gains	348	445
Gross unrealized losses	'	1
Fixed maturities, at fair value	7,807	9,518
Obligations of states, municipalities and political subdivisions, all other (not pre-refunded) [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	24,787	25,414
Gross unrealized gains	1,336	991
Gross unrealized losses	33	361
Fixed maturities, at fair value	26,090	26,044
Debt securities issued by foreign governments [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	2,435	2,552
Gross unrealized gains	34	33
Gross unrealized losses	1	8
Fixed maturities, at fair value	2,468	2,577
Continuous unrealized loss position less than 12 months, fair value	226	907
Continuous unrealized loss position less than 12 months, gross unrealized losses	'	8
Continuous unrealized loss position 12 months or longer, fair value	143	1
Continuous unrealized loss position 12 months or longer, gross unrealized losses	1	'
Continuous unrealized loss position, total, fair value	369	908
Continuous unrealized loss position, total, gross unrealized losses	1	8
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	2,114	2,263
Gross unrealized gains	167	179
Gross unrealized losses	7	18
Fixed maturities, at fair value	2,274	2,424
Continuous unrealized loss position less than 12 months, fair value	157	542
Continuous unrealized loss position less than 12 months, gross unrealized losses	1	17
Continuous unrealized loss position 12 months or longer, fair value	257	21
Continuous unrealized loss position 12 months or longer, gross unrealized losses	6	1
Continuous unrealized loss position, total, fair value	414	563
Continuous unrealized loss position, total, gross unrealized losses	7	18
All other corporate bonds [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	22,072	20,472
Gross unrealized gains	828	767
Gross unrealized losses	126	299
Fixed maturities, at fair value	22,774	20,940
Continuous unrealized loss position less than 12 months, fair value	3,161	6,887
Continuous unrealized loss position less than 12 months, gross unrealized losses	34	253
Continuous unrealized loss position 12 months or longer, fair value	2,658	421
Continuous unrealized loss position 12 months or longer, gross unrealized losses	92	46
Continuous unrealized loss position, total, fair value	5,819	7,308
Continuous unrealized loss position, total, gross unrealized losses	126	299
Other fixed maturities [Member]	'	'
Investment disclosure details	'	'
Available-for-sale securities for which fair value is less than 80% of amortized cost, greater than 6 months, 12 months or less	2	'
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	4	'
Redeemable preferred stock [Member]	'	'
Investment disclosure details	'	'
Fixed maturities, amortized cost	126	133
Gross unrealized gains	9	6
Gross unrealized losses	'	1
Fixed maturities, at fair value	135	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	609	686
Gross unrealized gains	342	260
Gross unrealized losses	2	3
Equity securities, at fair value	949	943
Continuous unrealized loss position less than 12 months, fair value	144	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	145	200
Continuous unrealized loss position, total, gross unrealized losses	2	3
Equity securities, public common stock [Member]	'	'
Investment disclosure details	'	'
Equity securities, cost	396	385
Gross unrealized gains	312	226
Gross unrealized losses	'	1
Equity securities, at fair value	708	610
Continuous unrealized loss position less than 12 months, fair value	36	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	37	53
Continuous unrealized loss position, total, gross unrealized losses	'	1
Equity securities, non-redeemable preferred stock [Member]	'	'
Investment disclosure details	'	'
Equity securities, cost	213	301
Gross unrealized gains	30	34
Gross unrealized losses	2	2
Equity securities, at fair value	241	333
Continuous unrealized loss position less than 12 months, fair value	108	147
Continuous unrealized loss position less than 12 months, gross unrealized losses	2	2
Continuous unrealized loss position, total, fair value	108	147
Continuous unrealized loss position, total, gross unrealized losses	$2	$2

Investments_details_Impairment

Investments (details) - Impairment Charges (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Impairment charges	'	'	'	'
Impairment charges	$10	$3	$20	$10
Fixed maturities [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	9	'	13	2
Mortgage-backed securities, collateralized mortgage obligations and pass-through securities [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	'	'	1	2
All other corporate bonds [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	9	'	12	'
Equity securities [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	1	2	6	3
Equity securities, public common stock [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	1	2	6	3
Other investments [Member]	'	'	'	'
Impairment charges	'	'	'	'
Impairment charges	'	$1	$1	$5

Investments_details_OTTI_Rollf

Investments (details) - OTTI Rollforward (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 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 period	$109	$125	$118	$127
Additions for OTTI securities where credit losses have been previously recognized	'	'	4	2
Reductions due to sales/defaults of credit-impaired securities	-5	'	-8	'
Adjustments to book value of credit-impaired securities due to changes in cash flows	1	-3	-9	-7
Cumulative OTTI credit losses recognized for securities still held, end of period	105	122	105	122
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 period	43	55	53	55
Additions for OTTI securities where credit losses have been previously recognized	'	'	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	-2	-7	-4
Cumulative OTTI credit losses recognized for securities still held, end of period	44	53	44	53
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 period	66	70	65	72
Additions for OTTI securities where credit losses have been previously recognized	'	'	3	'
Reductions due to sales/defaults of credit-impaired securities	-5	'	-5	'
Adjustments to book value of credit-impaired securities due to changes in cash flows	'	-1	-2	-3
Cumulative OTTI credit losses recognized for securities still held, end of period	$61	$69	$61	$69

Investments_details_Derivative

Investments (details) - Derivatives (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Derivative	'		'		'		'		'
Net realized investment gain (loss)	$40,000,000	[1]	($22,000,000)	[1]	$57,000,000	[1]	$155,000,000	[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)	$0		$0		($300,000)		$115,000,000		'
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(8) million and $0 million for the three months ended September 30, 2014 and 2013, respectively, and $(16) million and $(1) million for the nine months ended September 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(10) million and $(3) million for the three months ended September 30, 2014 and 2013, respectively, and $(20) million and $(10) million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in net realized investment gains (losses). In addition, unrealized gains from other changes in total OTTI of $2 million and $3 million for the three months ended September 30, 2014 and 2013, respectively, and $4 million and $9 million for the nine months ended September 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 $)	Sep. 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	$133	$94
Fair value of the fixed maturities for which the Company received a broker quote	134	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	98.00%	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 $)	Sep. 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	$64,627	$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	2,937	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	61,386	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	304	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	63,622	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	2,117	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	61,238	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	267	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	2,074	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	2,062	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	12	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	33,897	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	24	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	33,860	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	2,468	2,577
Debt securities issued by foreign governments [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	9	'
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	2,459	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	2,274	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	2,274	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	'	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	22,774	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	17	'
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	22,511	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	246	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	135	138
Transfers from Level 1 to Level 2	'	31
Transfers from Level 2 to Level 1	5	'
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	5	'
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	122	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	8	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	949	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	801	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	148	195
Equity securities, public 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	708	610
Equity securities, public 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	708	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	241	333
Transfers from Level 1 to Level 2	'	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	93	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	148	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	56	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	37	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	37	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	$37	$34

Fair_Value_Measurements_detail2

Fair Value Measurements (details) - Changes in Level 3 (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Changes in Level 3 fair value category [Roll Forward]	'	'	'
Level 3 fair value category, beginning balance	$300	$289	$284
Level 3 fair value category, total realized and unrealized investment gains (losses) reported in net realized investment gains (losses)	1	4	16
Level 3 fair value category, total unrealized investment gains (losses) reported in increases (decreases) in other comprehensive income	-1	-1	-1
Level 3 fair value category purchases	74	217	180
Level 3 fair value category sales	'	-1	-58
Level 3 fair value category settlements/maturities	-13	-73	-83
Gross transfers into Level 3	8	8	15
Gross transfers out of Level 3	-65	-139	-64
Level 3 fair value category, ending balance	304	304	289
Fixed maturities [Member]	'	'	'
Changes in Level 3 fair value category [Roll Forward]	'	'	'
Level 3 fair value category, beginning balance	264	255	230
Level 3 fair value category, total realized and unrealized investment gains (losses) reported in net realized investment gains (losses)	1	3	4
Level 3 fair value category, total unrealized investment gains (losses) reported in increases (decreases) in other comprehensive income	-2	-2	-2
Level 3 fair value category purchases	74	216	180
Level 3 fair value category sales	'	-1	-25
Level 3 fair value category settlements/maturities	-13	-73	-83
Gross transfers into Level 3	8	8	15
Gross transfers out of Level 3	-65	-139	-64
Level 3 fair value category, ending balance	267	267	255
Other investments [Member]	'	'	'
Changes in Level 3 fair value category [Roll Forward]	'	'	'
Level 3 fair value category, beginning balance	36	34	54
Level 3 fair value category, total realized and unrealized investment gains (losses) reported in net realized investment gains (losses)	'	1	12
Level 3 fair value category, total unrealized investment gains (losses) reported in increases (decreases) in other comprehensive income	1	1	1
Level 3 fair value category purchases	'	1	'
Level 3 fair value category sales	'	'	-33
Level 3 fair value category, ending balance	$37	$37	$34

Fair_Value_Measurements_Footno

Fair Value Measurements Footnote (details) - Financial Instruments (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Financial Instruments	'	'
Short-term securities	$5,033	$3,882
Fair Value [Member]	'	'
Financial Instruments	'	'
Short-term securities	5,033	3,882
Debt	7,390	7,123
Commercial paper	100	100
Fair Value [Member] | Level 1 [Member]	'	'
Financial Instruments	'	'
Short-term securities	1,265	1,608
Fair Value [Member] | Level 2 [Member]	'	'
Financial Instruments	'	'
Short-term securities	3,719	2,215
Debt	7,390	7,123
Commercial paper	100	100
Fair Value [Member] | Level 3 [Member]	'	'
Financial Instruments	'	'
Short-term securities	49	59
Carrying Value [Member]	'	'
Financial Instruments	'	'
Short-term securities	5,033	3,882
Debt	6,248	6,246
Commercial paper	$100	$100

Goodwill_details

Goodwill (details) (USD $)	Sep. 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	886	878
Total other intangible assets, accumulated amortization	570	527
Total other intangible assets, net	$316	$351

Goodwill_details_Goodwill_by_S

Goodwill (details) - Goodwill by Segment (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill by segment	'	'
Goodwill	$3,621	$3,634
Reportable Segments [Member] | Business and International Insurance [Member]	'	'
Goodwill by segment	'	'
Goodwill	2,486	2,499
Reportable Segments [Member] | Bond & Specialty Insurance [Member]	'	'
Goodwill by segment	'	'
Goodwill	495	495
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		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Other intangible assets by major asset class	'	'	'	'	'
Intangible assets subject to amortization, gross carrying amount	$669	'	$669	'	$661
Intangible assets subject to amortization, accumulated amortization	570	'	570	'	527
Intangible assets subject to amortization, net	99	'	99	'	134
Amortization expense for other intangible assets	12	11	35	34	'
Estimated intangible asset amortization expense, remainder of 2014	12	'	12	'	'
Estimated intangible asset amortization expense, 2015	26	'	26	'	'
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	438	'	438	'	414
Intangible assets subject to amortization, net	22	'	22	'	46
Amortization expense for other intangible assets	8	8	24	23	'
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	209	'	209	'	201
Intangible assets subject to amortization, accumulated amortization	132	'	132	'	113
Intangible assets subject to amortization, net	77	'	77	'	88
Amortization expense for other intangible assets	$4	$3	$11	$11	'

Other_Comprehensive_Income_and2

Other Comprehensive Income and Accumulated Other Comprehensive Income (details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 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	'	'	480	'
Amounts reclassified from accumulated other comprehensive income	'	'	10	'
Other comprehensive income (loss), net of taxes	-262	-15	490	-1,531
Accumulated other comprehensive income, net of tax, balance, end of period	1,300	705	1,300	705
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	-154	-204	901	-2,370
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	1	-2	4	2
Net changes in benefit plan assets and obligations	15	24	45	78
Net changes in unrealized foreign currency translation	-203	112	-149	-57
Other comprehensive income (loss) before income taxes	-341	-70	801	-2,347
Income tax expense (benefit), other comprehensive income (loss)	-79	-55	311	-816
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	'	'	610	'
Amounts reclassified from accumulated other comprehensive income	'	'	-20	'
Other comprehensive income (loss), net of taxes	-99	-132	590	-1,546
Accumulated other comprehensive income, net of tax, balance, end of period	1,715	'	1,715	'
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	-154	-204	901	-2,370
Income tax expense (benefit), other comprehensive income (loss)	-55	-72	311	-824
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	2	2
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	-2	4	2
Income tax expense (benefit), other comprehensive income (loss)	1	-1	2	'
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	'	'	28	'
Other comprehensive income (loss), net of taxes	10	15	28	50
Accumulated other comprehensive income, net of tax, balance, end of period	-403	'	-403	'
Net changes in benefit plan assets and obligations	15	24	45	78
Income tax expense (benefit), other comprehensive income (loss)	5	9	17	28
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	'	'	-130	'
Other comprehensive income (loss), net of taxes	-173	103	-130	-37
Accumulated other comprehensive income, net of tax, balance, end of period	-211	'	-211	'
Net changes in unrealized foreign currency translation	-203	112	-149	-57
Income tax expense (benefit), other comprehensive income (loss)	($30)	$9	($19)	($20)

Other_Comprehensive_Income_and3

Other Comprehensive Income and Accumulated Other Comprehensive Income (details) - Reclassifications (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Reclassification adjustment impacting net realized investment gains on the income statement	($40)	[1]	$22	[1]	($57)	[1]	($155)	[1]
Reclassification adjustment impacting general and administrative expense on the income statement	1,031		934		2,913		2,780
Total reclassifications	-1,258		-1,177		-3,629		-3,574
Income tax (expense) benefit	-339		-313		-975		-889
Amounts reclassified from accumulated other comprehensive income, net of taxes	-919		-864		-2,654		-2,685
Reclassification out of Accumulated Other Comprehensive Income [Member]	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income	'		'		'		'
Total reclassifications	14		33		19		33
Income tax (expense) benefit	5		8		9		9
Amounts reclassified from accumulated other comprehensive income, net of taxes	9		25		10		24
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	-1		-4		-30		-55
Income tax (expense) benefit	'		-1		-10		-19
Amounts reclassified from accumulated other comprehensive income, net of taxes	-1		-3		-20		-36
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	'		'		4		2
Income tax (expense) benefit	'		'		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		26		45		78
Income tax (expense) benefit	5		9		17		27
Amounts reclassified from accumulated other comprehensive income, net of taxes	10		17		28		51
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	'		11		'		8
Amounts reclassified from accumulated other comprehensive income, net of taxes	'		$11		'		$8
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(8) million and $0 million for the three months ended September 30, 2014 and 2013, respectively, and $(16) million and $(1) million for the nine months ended September 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(10) million and $(3) million for the three months ended September 30, 2014 and 2013, respectively, and $(20) million and $(10) million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in net realized investment gains (losses). In addition, unrealized gains from other changes in total OTTI of $2 million and $3 million for the three months ended September 30, 2014 and 2013, respectively, and $4 million and $9 million for the nine months ended September 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	9 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Board of Directors Approved Repurchase Authorizations [Member]	'	'
Repurchase activity	'	'
Number of shares repurchased (in shares)	8.1	25.4
Cost of shares repurchased	$750,000,000	$2,280,000,000
Average cost per share repurchased	$92.47	$89.61
Remaining capacity under share repurchase authorization	$2,480,000,000	$2,480,000,000

Earnings_per_Share_details

Earnings per Share (details) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings per Share disclosure	'	'	'	'
Net income	$919	$864	$2,654	$2,685
Participating share-based awards - allocated income	-7	-6	-19	-20
Net income available to common shareholders -- basic	912	858	2,635	2,665
Net income available to common shareholders -- diluted	$912	$858	$2,635	$2,665
Weighted average shares outstanding, basic	335.1	368.9	342.9	374.1
Weighted average effects of dilutive securities, stock options and performance shares (in shares)	3.8	4	3.6	4
Weighted average shares outstanding, diluted	338.9	372.9	346.5	378.1
Net income per common share, basic	$2.72	$2.33	$7.68	$7.12
Net income per common share, diluted	$2.69	$2.30	$7.60	$7.05

ShareBased_Incentive_Compensat2

Share-Based Incentive Compensation (details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	27-May-14
Share-Based Incentive Compensation disclosure	'	'	'	'	'	'
Stock options vested at end of period, number (in shares)	7,597,990	'	7,597,990	'	'	'
Stock options vested at end of period, weighted average exercise price (per share)	$58.48	'	$58.48	'	'	'
Stock options vested at end of period, weighted average contractual life remaining	'	'	'6 years 0 months 0 days	'	'	'
Stock options vested at end of period, aggregate intrinsic value	$269	'	$269	'	'	'
Stock options exercisable at end of period, number (in shares)	4,775,291	'	4,775,291	'	'	'
Stock options exercisable at end of period, weighted average exercise price (per share)	$50.40	'	$50.40	'	'	'
Stock options exercisable at end of period, weighted average contractual life remaining	'	'	'4 years 7 months 6 days	'	'	'
Stock options exercisable at end of period, aggregate intrinsic value	208	'	208	'	'	'
Total compensation cost recognized in earnings for all share-based incentive compensation awards	31	29	106	99	'	'
Tax benefits recognized in earnings related to compensation costs	10	10	36	34	'	'
Total unrecognized compensation cost related to all nonvested share-based incentive compensation awards	$151	'	$151	'	$120	'
Weighted-average period of recognition for unrecognized compensation cost (in years)	'	'	'1 year 9 months 18 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		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Plans [Member]	'	'	'	'
Defined benefit plan disclosure	'	'	'	'
Service cost	$27	$30	$82	$89
Interest cost on benefit obligation	38	33	113	99
Expected return on plan assets	-55	-52	-164	-156
Amortization of unrecognized net actuarial (gain) loss	17	27	49	80
Net periodic benefit cost	27	38	80	112
Postretirement Benefit Plans [Member]	'	'	'	'
Defined benefit plan disclosure	'	'	'	'
Interest cost on benefit obligation	3	3	8	7
Net periodic benefit cost, amortization of unrecognized prior service benefit	-1	-1	-2	-2
Amortization of unrecognized net actuarial (gain) loss	-1	'	-2	'
Net periodic benefit cost	$1	$2	$4	$5

Contingencies_Commitments_and_1

Contingencies, Commitments and Guarantees (details) - Commitments (USD $)	Sep. 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	$1.57	$1.52

Contingencies_Commitments_and_2

Contingencies, Commitments and Guarantees (details) - Loss Contingencies (USD $)	7 Months Ended	0 Months Ended		1 Months Ended
In Millions, unless otherwise specified	Apr. 30, 2002	Sep. 30, 2014	Mar. 22, 2010	Nov. 30, 2003	31-May-04
	item	Asbestos Direct Action Litigation [Member]	Asbestos Direct Action Litigation [Member]	Statutory and Hawaii Actions [Member]	Common Law Claims [Member]
			item	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	'	'	'	'
Settlement amount	'	$502	'	$412	$90
Number of remaining objectors to which the notice of the 1986 Orders was deemed insufficient to bar contribution claims against TPC	'	'	1	'	'
Total settlement amount	'	579	'	'	'
Interest related to settlement award	'	$77	'	'	'
Annual interest rate accruing on judgment not yet paid	'	0.27%	'	'	'

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	47 Months Ended
In Millions, unless otherwise specified	Oct. 25, 2010	Sep. 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	$482	'	'
Settlement amount	251	238	'	'
Interest related to settlement award	$169	$244	'	'
Annual 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 $)	Sep. 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	464
Amount recognized on balance sheet for contingent obligation	$8

Consolidating_Financial_Statem2

Consolidating Financial Statements (Unaudited) (details) (USD $)	Sep. 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				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Consolidating Statement of Income	'		'		'		'
Premiums	$5,983		$5,666		$17,734		$16,786
Net investment income	719		657		2,150		2,014
Fee income	110		107		329		286
Net realized investment gains (losses)	40	[1]	-22	[1]	57	[1]	155	[1]
Other revenues	34		44		109		213
Total revenues	6,886		6,452		20,379		19,454
Claims and claim adjustment expenses	3,520		3,297		10,661		9,980
Amortization of deferred acquisition costs	984		953		2,899		2,851
General and administrative expenses	1,031		934		2,913		2,780
Interest expense	93		91		277		269
Total claims and expenses	5,628		5,275		16,750		15,880
Income before income taxes	1,258		1,177		3,629		3,574
Income tax expense (benefit)	339		313		975		889
Net income	919		864		2,654		2,685
Total other-than-temporary impairment gains (losses)	-8		0		-16		-1
Other-than-temporary impairment losses recognized in net realized investment gains (losses)	-10		-3		-20		-10
Other-than-temporary impairment gains recognized in other comprehensive income	2		3		4		9
Reportable Legal Entities [Member] | TPC [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Premiums	4,064		3,839		12,028		11,384
Net investment income	479		438		1,451		1,350
Fee income	110		106		328		284
Net realized investment gains (losses)	-2		3		4		120
Other revenues	28		38		93		170
Total revenues	4,679		4,424		13,904		13,308
Claims and claim adjustment expenses	2,359		2,214		7,149		6,684
Amortization of deferred acquisition costs	642		640		1,927		1,912
General and administrative expenses	716		646		2,026		1,915
Interest expense	12		12		36		41
Total claims and expenses	3,729		3,512		11,138		10,552
Income before income taxes	950		912		2,766		2,756
Income tax expense (benefit)	263		248		770		700
Net income	687		664		1,996		2,056
Total other-than-temporary impairment gains (losses)	-8		1		-11		-3
Other-than-temporary impairment losses recognized in net realized investment gains (losses)	-9		-2		-14		-7
Other-than-temporary impairment gains recognized in other comprehensive income	1		3		3		4
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Premiums	1,919		1,827		5,706		5,402
Net investment income	239		217		695		659
Fee income	'		1		1		2
Net realized investment gains (losses)	41		-25		50		34
Other revenues	6		6		16		43
Total revenues	2,205		2,026		6,468		6,140
Claims and claim adjustment expenses	1,161		1,083		3,512		3,296
Amortization of deferred acquisition costs	342		313		972		939
General and administrative expenses	311		286		876		861
Total claims and expenses	1,814		1,682		5,360		5,096
Income before income taxes	391		344		1,108		1,044
Income tax expense (benefit)	106		93		291		269
Net income	285		251		817		775
Total other-than-temporary impairment gains (losses)	'		-1		-5		2
Other-than-temporary impairment losses recognized in net realized investment gains (losses)	-1		-1		-6		-3
Other-than-temporary impairment gains recognized in other comprehensive income	1		'		1		5
Reportable Legal Entities [Member] | Travelers [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Net investment income	1		2		4		5
Net realized investment gains (losses)	1		'		3		1
Total revenues	2		2		7		6
General and administrative expenses	4		2		11		4
Interest expense	81		79		241		228
Total claims and expenses	85		81		252		232
Income before income taxes	-83		-79		-245		-226
Income tax expense (benefit)	-30		-28		-86		-80
Net income of subsidiaries	972		915		2,813		2,831
Net income	919		864		2,654		2,685
Eliminations [Member]	'		'		'		'
Consolidating Statement of Income	'		'		'		'
Net income of subsidiaries	-972		-915		-2,813		-2,831
Net income	($972)		($915)		($2,813)		($2,831)
[1]	Total other-than-temporary impairment (OTTI) gains (losses) were $(8) million and $0 million for the three months ended September 30, 2014 and 2013, respectively, and $(16) million and $(1) million for the nine months ended September 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(10) million and $(3) million for the three months ended September 30, 2014 and 2013, respectively, and $(20) million and $(10) million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in net realized investment gains (losses). In addition, unrealized gains from other changes in total OTTI of $2 million and $3 million for the three months ended September 30, 2014 and 2013, respectively, and $4 million and $9 million for the nine months ended September 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 (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consolidating Statement of Comprehensive Income	'	'	'	'
Net income	$919	$864	$2,654	$2,685
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	-154	-204	901	-2,370
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	1	-2	4	2
Net changes in benefit plan assets and obligations	15	24	45	78
Net changes in unrealized foreign currency translation	-203	112	-149	-57
Other comprehensive income (loss) before income taxes	-341	-70	801	-2,347
Income tax expense (benefit)	-79	-55	311	-816
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	-262	-15	490	-1,531
Other comprehensive income (loss), net of taxes	-262	-15	490	-1,531
Comprehensive income	657	849	3,144	1,154
Reportable Legal Entities [Member] | TPC [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income	'	'	'	'
Net income	687	664	1,996	2,056
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	-118	-138	632	-1,735
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	2	-1	11	4
Net changes in benefit plan assets and obligations	'	'	'	1
Net changes in unrealized foreign currency translation	-120	26	-94	-35
Other comprehensive income (loss) before income taxes	-236	-113	549	-1,765
Income tax expense (benefit)	-62	-46	210	-616
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	-174	-67	339	-1,149
Other comprehensive income (loss), net of taxes	-174	-67	339	-1,149
Comprehensive income	513	597	2,335	907
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income	'	'	'	'
Net income	285	251	817	775
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	-35	-71	266	-647
Changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income	-1	-1	-7	-2
Net changes in benefit plan assets and obligations	1	-1	1	2
Net changes in unrealized foreign currency translation	-83	86	-55	-22
Other comprehensive income (loss) before income taxes	-118	13	205	-669
Income tax expense (benefit)	-22	-20	84	-231
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	-96	33	121	-438
Other comprehensive income (loss), net of taxes	-96	33	121	-438
Comprehensive income	189	284	938	337
Reportable Legal Entities [Member] | Travelers [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income	'	'	'	'
Net income	919	864	2,654	2,685
Changes in net unrealized gains on investment securities having no credit losses recognized in the consolidated statement of income	-1	5	3	12
Net changes in benefit plan assets and obligations	14	25	44	75
Other comprehensive income (loss) before income taxes	13	30	47	87
Income tax expense (benefit)	5	11	17	31
Other comprehensive income (loss), net of taxes, before other comprehensive income (loss) of subsidiaries	8	19	30	56
Other comprehensive income (loss) of subsidiaries	-270	-34	460	-1,587
Other comprehensive income (loss), net of taxes	-262	-15	490	-1,531
Comprehensive income	657	849	3,144	1,154
Eliminations [Member]	'	'	'	'
Consolidating Statement of Comprehensive Income	'	'	'	'
Net income	-972	-915	-2,813	-2,831
Other comprehensive income (loss) of subsidiaries	270	34	-460	1,587
Other comprehensive income (loss), net of taxes	270	34	-460	1,587
Comprehensive income	($702)	($881)	($3,273)	($1,244)

Consolidating_Financial_Statem5

Consolidating Financial Statements (details) - Consolidating Balance Sheet (Unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	$63,622	$63,956	'	'
Equity securities, available for sale, at fair value	949	943	'	'
Real estate investments	949	938	'	'
Short-term securities	5,033	3,882	'	'
Other investments	3,637	3,441	'	'
Total investments	74,190	73,160	'	'
Cash	367	294	295	330
Investment income accrued	663	734	'	'
Premiums receivable	6,439	6,125	'	'
Reinsurance recoverables	9,279	9,713	'	'
Ceded unearned premiums	848	801	'	'
Deferred acquisition costs	1,890	1,804	'	'
Deferred taxes	'	303	'	'
Contractholder receivables	4,367	4,328	'	'
Goodwill	3,621	3,634	'	'
Other intangible assets	316	351	'	'
Other assets	2,542	2,565	'	'
Total assets	104,522	103,812	'	'
Claims and claim adjustment expense reserves	50,402	50,895	'	'
Unearned premium reserves	12,181	11,850	'	'
Contractholder payables	4,367	4,328	'	'
Payables for reinsurance premiums	491	298	'	'
Deferred taxes	122	'	'	'
Debt	6,348	6,346	'	'
Other liabilities	5,290	5,299	'	'
Total liabilities	79,201	79,016	'	'
Common stock	21,764	21,500	21,425	21,161
Retained earnings	26,394	24,291	23,485	21,352
Accumulated other comprehensive income	1,300	810	705	2,236
Treasury stock, at cost	-24,137	-21,805	-20,804	-19,344
Total shareholders' equity	25,321	24,796	24,811	'
Total liabilities and shareholders' equity	104,522	103,812	'	'
Fixed maturities, available for sale, amortized cost	61,043	62,196	'	'
Equity securities, available for sale, cost	609	686	'	'
Common stock, shares authorized	1,750	1,750	'	'
Common stock, shares issued	331.4	353.5	'	'
Common stock, shares outstanding	331.4	353.5	364.1	377.4
Treasury stock, at cost, shares	427.6	401.5	'	'
Reportable Legal Entities [Member] | TPC [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	43,493	43,720	'	'
Equity securities, available for sale, at fair value	271	329	'	'
Real estate investments	56	33	'	'
Short-term securities	2,413	1,867	'	'
Other investments	2,658	2,450	'	'
Total investments	48,891	48,399	'	'
Cash	216	137	130	177
Investment income accrued	451	499	'	'
Premiums receivable	4,353	4,124	'	'
Reinsurance recoverables	6,214	6,292	'	'
Ceded unearned premiums	738	712	'	'
Deferred acquisition costs	1,666	1,570	'	'
Deferred taxes	'	279	'	'
Contractholder receivables	3,274	3,179	'	'
Goodwill	2,609	2,619	'	'
Other intangible assets	225	250	'	'
Other assets	2,011	2,010	'	'
Total assets	70,648	70,070	'	'
Claims and claim adjustment expense reserves	33,414	33,506	'	'
Unearned premium reserves	8,463	8,188	'	'
Contractholder payables	3,274	3,179	'	'
Payables for reinsurance premiums	286	127	'	'
Deferred taxes	24	'	'	'
Debt	692	692	'	'
Other liabilities	4,039	4,109	'	'
Total liabilities	50,192	49,801	'	'
Additional paid-in capital	11,634	11,634	'	'
Retained earnings	7,716	7,868	'	'
Accumulated other comprehensive income	1,106	767	'	'
Total shareholders' equity	20,456	20,269	'	'
Total liabilities and shareholders' equity	70,648	70,070	'	'
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	20,090	20,199	'	'
Equity securities, available for sale, at fair value	542	484	'	'
Real estate investments	893	905	'	'
Short-term securities	812	492	'	'
Other investments	978	990	'	'
Total investments	23,315	23,070	'	'
Cash	149	154	163	151
Investment income accrued	206	231	'	'
Premiums receivable	2,086	2,001	'	'
Reinsurance recoverables	3,065	3,421	'	'
Ceded unearned premiums	110	89	'	'
Deferred acquisition costs	224	234	'	'
Deferred taxes	'	86	'	'
Contractholder receivables	1,093	1,149	'	'
Goodwill	1,012	1,015	'	'
Other intangible assets	91	101	'	'
Other assets	363	357	'	'
Total assets	31,714	31,908	'	'
Claims and claim adjustment expense reserves	16,988	17,389	'	'
Unearned premium reserves	3,718	3,662	'	'
Contractholder payables	1,093	1,149	'	'
Payables for reinsurance premiums	205	171	'	'
Deferred taxes	44	'	'	'
Other liabilities	1,160	1,180	'	'
Total liabilities	23,208	23,551	'	'
Common stock	390	390	'	'
Additional paid-in capital	6,502	6,502	'	'
Retained earnings	1,070	1,042	'	'
Accumulated other comprehensive income	544	423	'	'
Total shareholders' equity	8,506	8,357	'	'
Total liabilities and shareholders' equity	31,714	31,908	'	'
Reportable Legal Entities [Member] | Travelers [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Fixed maturities, available for sale, at fair value	39	37	'	'
Equity securities, available for sale, at fair value	136	130	'	'
Short-term securities	1,808	1,523	'	'
Other investments	1	1	'	'
Total investments	1,984	1,691	'	'
Cash	2	3	2	2
Investment income accrued	6	4	'	'
Deferred taxes	'	-62	'	'
Investment in subsidiaries	28,950	28,616	'	'
Other assets	168	198	'	'
Total assets	31,110	30,450	'	'
Deferred taxes	54	'	'	'
Debt	5,656	5,654	'	'
Other liabilities	91	10	'	'
Total liabilities	5,801	5,664	'	'
Common stock	21,764	21,500	'	'
Retained earnings	26,382	24,281	'	'
Accumulated other comprehensive income	1,300	810	'	'
Treasury stock, at cost	-24,137	-21,805	'	'
Total shareholders' equity	25,309	24,786	'	'
Total liabilities and shareholders' equity	31,110	30,450	'	'
Eliminations [Member]	'	'	'	'
Consolidating Balance Sheet	'	'	'	'
Investment in subsidiaries	-28,950	-28,616	'	'
Total assets	-28,950	-28,616	'	'
Common stock	-390	-390	'	'
Additional paid-in capital	-18,136	-18,136	'	'
Retained earnings	-8,774	-8,900	'	'
Accumulated other comprehensive income	-1,650	-1,190	'	'
Total shareholders' equity	-28,950	-28,616	'	'
Total liabilities and shareholders' equity	($28,950)	($28,616)	'	'

Consolidating_Financial_Statem6

Consolidating Financial Statements (details) - Consolidating Statement of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Consolidating Statement of Cash Flows	'	'
Net income	$2,654	$2,685
Net adjustments to reconcile net income to net cash provided by operating activities	514	204
Net cash provided by operating activities	3,168	2,889
Proceeds from maturities of fixed maturities	7,975	5,917
Proceeds from sales of investments, fixed maturities	927	1,160
Proceeds from sales of investments, equity securities	128	57
Proceeds from sales of investments, real estate investments	5	'
Proceeds from sales of investments, other investments	612	545
Purchases of investments, fixed maturities	-8,237	-6,492
Purchases of investments, equity securities	-47	-50
Purchases of investments, real estate investments	-41	-65
Purchases of investments, other investments	-406	-312
Net sales (purchases) of short-term securities	-1,163	-1,893
Securities transactions in course of settlement	119	280
Acquisition, net of cash acquired	-12	'
Other investing activities	-262	-254
Net cash used in investing activities	-402	-1,107
Payment of debt	'	-500
Issuance of debt	'	494
Dividends paid to shareholders	-549	-549
Issuance of common stock - employee share options	154	158
Treasury stock acquired - share repurchase authorization	-2,275	-1,400
Treasury stock acquired - net employee share-based compensation	-56	-60
Excess tax benefits from share-based payment arrangements	38	43
Net cash used in financing activities	-2,688	-1,814
Effect of exchange rate changes on cash	-5	-3
Net increase (decrease) in cash	73	-35
Cash at beginning of year	294	330
Cash at end of period	367	295
Income taxes paid (received)	785	724
Interest paid	217	206
Reportable Legal Entities [Member] | TPC [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	1,996	2,056
Net adjustments to reconcile net income to net cash provided by operating activities	391	-348
Net cash provided by operating activities	2,387	1,708
Proceeds from maturities of fixed maturities	4,886	4,096
Proceeds from sales of investments, fixed maturities	511	590
Proceeds from sales of investments, equity securities	83	21
Proceeds from sales of investments, real estate investments	1	'
Proceeds from sales of investments, other investments	317	337
Purchases of investments, fixed maturities	-4,888	-4,339
Purchases of investments, equity securities	-3	-20
Purchases of investments, real estate investments	-22	'
Purchases of investments, other investments	-292	-222
Net sales (purchases) of short-term securities	-552	-1,563
Securities transactions in course of settlement	66	182
Acquisition, net of cash acquired	-9	'
Other investing activities	-256	-250
Net cash used in investing activities	-158	-1,168
Payment of debt	'	-500
Capital contributions	'	500
Dividends paid to parent company	-2,150	-587
Net cash used in financing activities	-2,150	-587
Net increase (decrease) in cash	79	-47
Cash at beginning of year	137	177
Cash at end of period	216	130
Income taxes paid (received)	684	691
Interest paid	40	52
Reportable Legal Entities [Member] | Other Subsidiaries [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	817	775
Net adjustments to reconcile net income to net cash provided by operating activities	-73	224
Net cash provided by operating activities	744	999
Proceeds from maturities of fixed maturities	3,088	1,820
Proceeds from sales of investments, fixed maturities	415	565
Proceeds from sales of investments, equity securities	41	36
Proceeds from sales of investments, real estate investments	4	'
Proceeds from sales of investments, other investments	295	208
Purchases of investments, fixed maturities	-3,345	-2,146
Purchases of investments, equity securities	-38	-29
Purchases of investments, real estate investments	-19	-65
Purchases of investments, other investments	-114	-90
Net sales (purchases) of short-term securities	-326	-492
Securities transactions in course of settlement	53	98
Acquisition, net of cash acquired	-3	'
Other investing activities	-6	-4
Net cash used in investing activities	45	-99
Dividends paid to parent company	-789	-885
Net cash used in financing activities	-789	-885
Effect of exchange rate changes on cash	-5	-3
Net increase (decrease) in cash	-5	12
Cash at beginning of year	154	151
Cash at end of period	149	163
Income taxes paid (received)	215	236
Reportable Legal Entities [Member] | Travelers [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	2,654	2,685
Net adjustments to reconcile net income to net cash provided by operating activities	322	-1,531
Net cash provided by operating activities	2,976	1,154
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	-6	-1
Net sales (purchases) of short-term securities	-285	162
Net cash used in investing activities	-289	160
Issuance of debt	'	494
Dividends paid to shareholders	-549	-549
Issuance of common stock - employee share options	154	158
Treasury stock acquired - share repurchase authorization	-2,275	-1,400
Treasury stock acquired - net employee share-based compensation	-56	-60
Excess tax benefits from share-based payment arrangements	38	43
Net cash used in financing activities	-2,688	-1,314
Net increase (decrease) in cash	-1	'
Cash at beginning of year	3	2
Cash at end of period	2	2
Income taxes paid (received)	-114	-203
Interest paid	177	154
Eliminations [Member]	'	'
Consolidating Statement of Cash Flows	'	'
Net income	-2,813	-2,831
Net adjustments to reconcile net income to net cash provided by operating activities	-126	1,859
Net cash provided by operating activities	-2,939	-972
Capital contributions	'	-500
Dividends paid to parent company	2,939	1,472
Net cash used in financing activities	$2,939	$972