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Related Party Transactions and Parent Company Equity - Additional Information (Details) (USD $)
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0 Months Ended |
12 Months Ended |
0 Months Ended |
3 Months Ended |
9 Months Ended |
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Sep. 27, 2014
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Sep. 26, 2014
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Dec. 31, 2014
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Sep. 30, 2014
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| Related Party Transaction [Line Items] |
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| Number of years until Company can enter into transactions that would affect ownership |
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2 years |
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| Percentage of ownership change due to entering into new agreements resulting in a breach of agreement (more than) |
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35.00% |
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| Escalating increases in services provided, percent (up to) |
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10.00% |
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| Transition services agreement, term |
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1 year |
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| Target working capital used in indemnification agreement |
$ 64,400,000 |
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| Working capital adjustment payment from Exelis |
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2,600,000 |
0 |
0 |
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| Former Parent |
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| Related Party Transaction [Line Items] |
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| General corporate expenses incurred by Exelis allocated to Company |
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33,400,000 |
36,400,000 |
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|
23,300,000 |
| Working capital adjustment payment from Exelis |
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|
|
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$ 17,000,000 |
$ 2,600,000 |
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| Minimum |
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| Related Party Transaction [Line Items] |
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| Transition services agreement, term |
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3 months |
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| Maximum |
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| Related Party Transaction [Line Items] |
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| Transition services agreement, term |
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24 months |
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