Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Other postretirement liabilities	$ 9.4	$ 6.3
Product warranty and self-insured risks	0.4	0.3
Tax carry forwards	292.3	292.9
Other accruals and miscellaneous	22.1	22.6
Subtotal	324.2us-gaap_DeferredTaxAssetsGross	322.1us-gaap_DeferredTaxAssetsGross
Valuation allowance	(313.5)	(305.2)
Total deferred tax assets	10.7us-gaap_DeferredTaxAssetsNet	16.9us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities:
Property, plant & equipment	5.9	7.8
Pension	0tecua_DeferredTaxLiabilitiesPension	0tecua_DeferredTaxLiabilitiesPension
Unrealized gains on securities	2.9	6.4
Other	1.8us-gaap_DeferredTaxLiabilitiesOther	2.6us-gaap_DeferredTaxLiabilitiesOther
Total deferred tax liabilities	10.6us-gaap_DeferredIncomeTaxLiabilities	16.8us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax (liabilities) assets	$ 0.1us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 0.1us-gaap_DeferredTaxAssetsLiabilitiesNet

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves and accruals not separately disclosed.

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