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Goodwill and Other Intangible Assets Schedule of Intangible Assets (excluding Goodwill) by Major Class (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, accumulated amortization | (214,490)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | $ (207,570)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Intangible Assets, Gross (Excluding Goodwill) | 569,330 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 571,500 us-gaap_IntangibleAssetsGrossExcludingGoodwill
Trademarks and Trade Names [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Indefinite-lived intangible assets, gross carrying amount | 107,330 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember | 108,480 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember
Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 346,140 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 347,070 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Finite-lived intangible assets, accumulated amortization | (152,980)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (147,760)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 115,860 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 115,950 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
Finite-lived intangible assets, accumulated amortization | (61,510)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | (59,810)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
Useful Life Five to Twelve Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 108,530 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFiveToTwelveYearsMember | 109,460 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFiveToTwelveYearsMember
Finite-lived intangible assets, accumulated amortization | (46,380)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFiveToTwelveYearsMember | (44,370)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFiveToTwelveYearsMember
Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 237,610 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFifteenToTwentyfiveYearsMember | 237,610 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFifteenToTwentyfiveYearsMember
Finite-lived intangible assets, accumulated amortization | (106,600)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFifteenToTwentyfiveYearsMember | (103,390)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeFifteenToTwentyfiveYearsMember
Useful Life One to Fifteen Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 72,560 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeOneToFifteenYearsMember | 71,830 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeOneToFifteenYearsMember
Finite-lived intangible assets, accumulated amortization | (33,840)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeOneToFifteenYearsMember | (32,250)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeOneToFifteenYearsMember
Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 43,300 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeSeventeenToThirtyYearsMember | 44,120 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeSeventeenToThirtyYearsMember
Finite-lived intangible assets, accumulated amortization | (27,670)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeSeventeenToThirtyYearsMember | $ (27,560)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / trs_FiniteLivedIntangibleAssetsByUsefulLifeAxis = trs_UsefulLifeSeventeenToThirtyYearsMember
Minimum [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 1 year |
Minimum [Member] | Useful Life Five to Twelve Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 5 years |
Minimum [Member] | Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 15 years |
Minimum [Member] | Useful Life One to Fifteen Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 1 year |
Minimum [Member] | Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 17 years |
Maximum [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 30 years |
Maximum [Member] | Useful Life Five to Twelve Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 12 years |
Maximum [Member] | Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 25 years |
Maximum [Member] | Useful Life One to Fifteen Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 15 years |
Maximum [Member] | Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 30 years |

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