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Discontinued Operations - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 CAS [Member] | Dec. 31, 2011 Exelis [Member] | Oct. 31, 2011 Exelis [Member] Contract | Dec. 31, 2011 Xylem [Member] | Dec. 31, 2012 Shape Cutting Businesses [Member] | Dec. 31, 2011 Xylem and Exelis [Member] | Dec. 31, 2012 Xylem and Exelis [Member]
Proceeds from sale of segment |  |  | $ 236.6 |  |  |  | $ 38.4 |  |
Proceeds from contribution from subsidiaries |  | 1,671.0 |  | 683.0 |  | 988.0 |  |  |
Percentage share of contingent liabilities |  | 21.00% |  | 39.00% |  | 40.00% |  |  |
Net Tax Related Liability Due to Exelis and Xylem in the Aggregate | 0.8 |  |  |  |  |  |  |  |
Distribution of Exelis and Xylem - Retained Earnings, TAX FILING ADJUSTMENT | 7.0 |  |  |  |  |  |  |  |
Minimum Period for Providing Transition Period | 3 months |  |  |  |  |  |  |  |
Maximum period for providing transition period | 24 months |  |  |  |  |  |  |  |
Percentage of Escalation Over Cost | 10.00% |  |  |  |  |  |  |  |
Billings under transition service agreement, total |  |  |  |  |  |  |  | 22.0 |
Amount receivable associated with transactions related to transition services agreements |  |  |  |  |  |  |  |  | 1.3
Amount payable associated with transactions related to the transition services agreements |  |  |  |  |  |  |  |  | $ 0.1
Number of Contracts |  |  |  |  | 425 |  |  |  |

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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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