Rendering

Component: (Network and Table)
Network
54141 - Disclosure - Pension Plans, Retirement Benefits and Savings Plans (details) - Additional Pension Disclosures
(http://trv.com/role/PensionPlansRetirementBenefitsAndSavingsPlansFootnote_details_AdditionalPensionDisclosures)
TableBenefit Plans [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000086312 (http://www.sec.gov/CIK)
Defined benefit plan disclosurePeriod [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Benefit Plans [Axis]Benefit Plans [Axis]Benefit Plans [Axis]
Qualified Domestic Pension Plan [Member]Nonqualified and Foreign Pension Plans [Member]Pension Plans [Member]Postretirement Benefit Plans [Member]Pension and postretirement benefit plans [Domain]Qualified Domestic Pension Plan [Member]Nonqualified and Foreign Pension Plans [Member]Pension Plans [Member]Postretirement Benefit Plans [Member]Pension and postretirement benefit plans [Domain]Pension Plans [Member]Postretirement Benefit Plans [Member]Pension and postretirement benefit plans [Domain]
Total accumulated benefit obligation
2,850,000,000  
200,000,000  
3,050,000,000  
 
 
3,010,000,000  
200,000,000  
3,210,000,000  
 
 
 
 
 
Aggregate projected benefit obligation for pension plans with an accumulated benefit obligation in excess of plan assets
 
 
123,000,000  
 
 
 
 
3,250,000,000  
 
 
 
 
 
Aggregate accumulated benefit obligation for pension plans with an accumulated benefit obligation in excess of plan assets
 
 
121,000,000  
 
 
 
 
3,200,000,000  
 
 
 
 
 
Fair value of plan assets for pension plans with an accumulated benefit obligation in excess of plan assets
 
 
33,000,000  
 
 
 
 
2,850,000,000  
 
 
 
 
 
Components of net periodic benefit cost and other amounts recognized in other comprehensive income
 
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
112,000,000  
6,000,000  
118,000,000  
 
 
107,000,000  
6,000,000  
113,000,000  
 
 
98,000,000  
 
 
Interest cost on benefit obligation
124,000,000  
8,000,000  
132,000,000  
9,000,000  
 
129,000,000  
9,000,000  
138,000,000  
12,000,000  
 
135,000,000  
13,000,000  
 
Expected return on plan assets
 
 
(208,000,000) 
(1,000,000) 
 
 
 
(187,000,000) 
(1,000,000) 
 
(182,000,000) 
(1,000,000) 
 
Net periodic benefit cost, amortization of unrecognized prior service benefit
 
 
 
(2,000,000) 
 
 
 
 
 
 
 
 
 
Net periodic benefit cost, amortization of unrecognized net actuarial loss (gain)
 
 
107,000,000  
 
 
 
 
89,000,000  
(1,000,000) 
 
76,000,000  
 
 
Net periodic benefit cost, net benefit expense
 
 
 
 
149,000,000  
 
6,000,000  
 
 
 
 
 
 
 
153,000,000  
 
10,000,000  
 
 
 
127,000,000  
 
12,000,000  
 
 
 
Other changes in benefit plan assets and benefit obligations recognized in other comprehensive income:
 
 
 
 
 
 
 
 
 
 
 
 
 
Other changes in benefit plan assets and benefit obligations recognized in other comprehensive income, prior service benefit
 
 
 
 
 
 
 
 
 
 
 
 
 
Other changes in benefit plan assets and benefit obligations recognized in other comprehensive income, net actuarial loss (gain)
 
 
(518,000,000) 
(24,000,000) 
 
 
 
176,000,000  
11,000,000  
 
388,000,000  
(5,000,000) 
 
Other changes in benefit plan assets and benefit obligations recognized in other comprehensive income, plan amendments
 
 
 
 
 
 
 
 
(31,000,000) 
 
 
 
 
Other changes in benefit plan assets and benefit obligations recognized in other comprehensive income, amortization of prior service benefit
 
 
 
2,000,000  
 
 
 
 
 
 
 
 
 
Other changes in benefit plan assets and benefit obligations recognized in other comprehensive income, amortization of net actuarial gain (loss)
 
 
(107,000,000) 
 
 
 
 
(89,000,000) 
1,000,000  
 
(76,000,000) 
 
 
Total other changes in benefit plan assets and benefit obligations recognized in other comprehensive income
 
 
 
 
(625,000,000) 
 
(22,000,000) 
 
(647,000,000) 
 
 
 
 
 
87,000,000  
 
(19,000,000) 
 
69,000,000  
 
312,000,000  
 
(5,000,000) 
 
307,000,000  
 
Total other changes recognized in net benefit expense and other comprehensive income
 
 
 
 
(476,000,000) 
 
(16,000,000) 
 
 
 
 
 
 
 
240,000,000  
 
(9,000,000) 
 
 
 
439,000,000  
 
7,000,000  
 
 
 
Estimated net actuarial gain (loss) that will be amortized from other comprehensive income into net periodic benefit cost over the next fiscal year
 
 
(65,000,000) 
2,000,000  
 
 
 
 
 
 
 
 
 
Estimated prior service benefit to be amortized over the next fiscal year
 
 
0  
3,000,000  
 
 
 
 
 
 
 
 
 
Estimated Future Benefit Payments
 
 
 
 
 
 
 
 
 
 
 
 
 
Benefits expected to be paid, 2014
 
 
165,000,000  
15,000,000  
 
 
 
 
 
 
 
 
 
Benefits expected to be paid, 2015
 
 
176,000,000  
15,000,000  
 
 
 
 
 
 
 
 
 
Benefits expected to be paid, 2016
 
 
187,000,000  
15,000,000  
 
 
 
 
 
 
 
 
 
Benefits expected to be paid, 2017
 
 
198,000,000  
15,000,000  
 
 
 
 
 
 
 
 
 
Benefits expected to be paid, 2018
 
 
209,000,000  
14,000,000  
 
 
 
 
 
 
 
 
 
Benefits expected to be paid, 2019 through 2023
 
 
1,165,000,000  
70,000,000