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Commitments and Contingencies (Details) (USD $) | 3 Months Ended | 9 Months Ended |  |  | 9 Months Ended | 145 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Mar. 31, 2013 | Mar. 31, 2012 | Sep. 30, 2013 Asbestos [Member] Claim | Sep. 30, 2013 Asbestos [Member] Claim | Sep. 30, 2013 Asbestos [Member] Minimum [Member] | Sep. 30, 2013 Asbestos [Member] Maximum [Member]
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Pending claims, approximate number |  |  |  |  |  |  | 2,250 | 2,250 |  |
Amount paid for settled claim |  |  |  |  |  |  |  | $ 14,600,000 |  |
Range of possible loss, minimum |  |  |  |  |  |  | 24,400,000 | 24,400,000 |  |
Range of possible loss, maximum |  |  |  |  |  |  | 37,400,000 | 37,400,000 |  |
Increase for low end of range |  |  |  |  |  |  | 2,700,000 |  |  |
Decrease for high end of range |  |  |  |  |  |  | 2,700,000 |  |  |
Estimated legal costs |  |  |  |  |  |  |  |  | 27,400,000 | 48,100,000
Changes in product warranties [Roll forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  | 17,288,000 | 13,500,000 | 23,498,000 | 18,849,000 |  |  |  |
Liabilities accrued for current year sales | 20,755,000 | 23,226,000 | 61,131,000 | 58,882,000 |  |  |  |  |  |
Settlement of warranty claims | (23,556,000) | (23,021,000) | (57,722,000) | (53,328,000) |  |  |  |  |  |
Balance, end of period | $ 20,697,000 | $ 19,054,000 | $ 20,697,000 | $ 19,054,000 | $ 23,498,000 | $ 18,849,000 |  |  |  |

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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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