2.2.0.7 false Pension and Other Postretirement Benefits 1090 - Disclosure - Pension and Other Postretirement Benefits true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Pension and Other Postretirement Benefits 0 trh_PensionAndOtherPostretirementBenefitsDisclosureAbstract trh false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 Pension and Other Postretirement Benefits 1 trh_OtherPensionAndPostretirementBenefitsDisclosureTextBlock trh false na duration Description containing certain pension and other postretirement benefits disclosures as a single block of text. false false false false false false false false false false false terselabel false 1 false false false false 0 0 <table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> 9. Pension and Other Postretirement Benefits   Through various dates in 2009, a substantial majority of TRHs employees were eligible to participate in certain benefit plans sponsored by American International Group, Inc. (AIG) and its subsidiaries (collectively, the AIG Group) (see Note 10), including noncontributory defined benefit (DB) pension plans, defined contribution (DC) pension plans and other postretirement benefit plans. Certain of the pension plans were multiemployer plans in that they did not separately identify plan benefits and plan assets attributable to participating companies. For such plans, only contributions paid or accrued were charged to expense.   As of January 1, 2010, TRH employees no longer participate in benefit plans sponsored by the AIG Group. TRH employees now participate in DB pension, DC pension and other post retirement benefit plans sponsored and maintained by TRH. In general, vested and unvested benefits accrued through the end of 2009 by TRH employees participating in AIG sponsored plans have been assumed by a new corresponding TRH pension plan, and in the case of the U.S. DB pension plans, benefits were frozen as of December 31, 2009. In 2010, TRH established a new DB pension plan for these frozen benefit liabilities. In the first quarter of 2010, a DB pension plan sponsored by the AIG Group transferred a large portion of the funds relating to TRHs employees prior participation in the comparable AIG Group plan into the new TRH DB pension plan, with the balance of the funds expected to be transferred by early 2011. In addition, in 2010, TRH has established new DC pension plans to provide pension benefits earned by its employees after 2009.   These plans are not material to TRHs results of operations, financial condition or cash flows for all periods presented herein.  </td></tr></table> 9. Pension and Other Postretirement Benefits   Through various dates in 2009, a substantial majority of TRHs employees were eligible to participate false false false us-types:textBlockItemType textblock Description containing certain pension and other postretirement benefits disclosures as a single block of text. No authoritative reference available. false 1 2 false UnKnown UnKnown UnKnown false true