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Commitments And Contingencies (Schedule Of Activity Related To Asbestos Claim) (Detail) (Asbestos Commitments and Contingencies) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2014 Claim | Mar. 31, 2013 Claim | Dec. 31, 2013 Claim | Dec. 30, 2009 Maritime Claims Claim
Loss Contingencies [Line Items] |  |  |  |  |  |
Beginning claims | 51,490 |  | 56,442 |  | 56,442 |
New claims | 680 |  | 792 |  | 2,950 |
Settlements | (303) |  | (237) |  | (1,142) |
Dismissals | (968) |  | (789) |  | (6,762) |
Number Of Activated Maritime Claims | 0 | [1] | 0 | [1] | 2 |
Ending claims | 50,899 |  | 56,208 |  | 51,490 |
Total number of maritime claims |  |  |  |  |  | 36,448
[1] | As of January 1, 2010, the Company was named in 36,448 maritime actions which had been administratively dismissed by the United States District Court for the Eastern District of Pennsylvania ("MARDOC claims"), and therefore were not classified as active claims. In addition, the Company was named in 8 new maritime actions in 2010 (also not classified as active claims). By settlement agreement of December 30, 2013, the Company resolved all of the remaining MARDOC claims with plaintiffs’ counsel. The agreement resulted in the dismissal of all MARDOC claims against the Company.

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- Definition The number of asbestos claims dismissed during the period. + References No definition available. + Details
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- Definition The number of asbestos claims settled during the period. + References No definition available. + Details
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- Definition Number of previously inactive MARDOC claims that were newly activated in a given period + References No definition available. + Details
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Namespace Prefix: | cr_
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- Definition The total number of claims related to maritime actions not included in beginning claims. + References No definition available. + Details
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Balance Type: | na
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- Details
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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The total amount of pending claims pertaining to a loss contingency accrual as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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