| Entity Registrant Name | TRAVELERS COMPANIES, INC. |
| CIK | 0000086312 |
| Accession number | 0001047469-14-000854 |
| Link to XBRL instance | http://www.sec.gov/Archives/edgar/data/86312/000104746914000854/trv-20131231.xml |
| Fiscal year end | --12-31 |
| Fiscal year focus | 2013 |
| Fiscal period focus | FY |
| Current balance sheet date | 2013-12-31 |
| Current year-to-date income statement start date | 2013-01-01 |
| Commentary | Does not report PPE on balance sheet. |
| Level 3 (Disclosure) Text Block concept | PPE Appears Immaterial |
PPE Appears Immaterial |
Level 4 Details Key Concepts: Long-term Debt Maturities
| Description | Fact value | US GAAP XBRL Concept |
|---|---|---|
| PPE, Gross | 0 | |
| Accumulated depreciation | 0 | |
| PPE, Net | 0 | |
| CHECK | 0 |
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