Applicable spread on base rate option.

No definition available.

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- Definition

Applicable spread on Eurodollar rate option.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument Convertible Fair Value Of Liability Component

+ References

No definition available.

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- Definition

Debt Instrument Redemption Price

+ References

No definition available.

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- Definition

Fees For Performance and Commercial Letters of Credit.

+ References

No definition available.

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- Definition

Letter of credit fees for financial letters of credit.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility additional borrowing capacity.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility basis spread on eurodollar rate.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility Basis spread on Federal fund rate.

+ References

No definition available.

+ Details

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- Definition

Maximum consolidated leverage ratio under revolving credit facility covenants.

+ References

No definition available.

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- Definition

Maximum consolidated senior leverage ratio under revolving credit facility covenants.

+ References

No definition available.

+ Details

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- Definition

Maximum period to cure defaults triggering cross default provisions.

+ References

No definition available.

+ Details

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- Definition

Minimum aggregate amount of indebtedness swap contracts or guarantees to trigger cross default provisions.

+ References

No definition available.

+ Details

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- Definition

Minimum aggregate amount of senior notes accelerated to trigger cross default provisions.

+ References

No definition available.

+ Details

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- Definition

Minimum consolidated interest coverage ratio under revolving credit facility covenants.

+ References

No definition available.

+ Details

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- Definition

Principal amount of convertible debt sold.

+ References

No definition available.

+ Details

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- Definition

Remaining CODES that have been classified as long-term debt.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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- Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Subparagraph (SX 210.5-02.22(a)(2))

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- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 5

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.19(b),22(b))

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

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-Glossary Financing Activities

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- Definition

The gross value of stock issued during the period upon the conversion of convertible securities.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30, 31

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Debt - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
Debt - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 13, 2014	Feb. 03, 2012	Feb. 02, 2011	Jul. 29, 2005
Debt Instrument [Line Items]
Total aggregate borrowings under revolving credit facility					1,000,000,000
Uncommitted incremental revolving facilities and additional term loan facilities					500,000,000
Base rate above the latest federal funds rate					0.50%
Base rate above a Eurodollar Rate					1.00%
Conversion of converted securities	(161,000,000)
Ownership percentage	100.00%
Maximum consolidated senior leverage ratio under revolving credit facility covenants	4.0
Minimum consolidated interest coverage ratio under revolving credit facility covenants	3.0
Maximum consolidated interest coverage ratio under revolving credit facility covenants	3.5
Minimum aggregate amount of indebtedness, swap contracts or guarantees to trigger cross default provisions	50,000,000
Maximum days to cure defaults triggering cross default provisions	10 days
Minimum aggregate amount of senior notes accelerated to trigger cross default provisions	100,000,000
L-3 Communications Holdings, Inc. [Member]
Debt Instrument [Line Items]
Interest expense recognized	2,000,000	21,000,000	21,000,000
Ownership percentage	100.00%
Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Redemptions of debt	0	0
CODES Due 2035 [Member]
Debt Instrument [Line Items]
Sale of 3% Convertible Contingent Debt Securities by L-3 Holdings							700,000,000
Interest rate on Senior Notes	3.00%
Repurchased debt						11,000,000
Redemption price for CODES				1,000
Principal amount of CODES				1,000
Conversion of converted securities				935,000,000
Redemption date	Jun. 02, 2014
Excess of conversion value over fair value of the debt component				161,000,000
CODES Due 2035 [Member] \| L-3 Communications Holdings, Inc. [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	3.00%	3.00%
Remaining principal amount of convertible debt securities that have been classified as long-term debt		$ 689,000,000
Minimum [Member]
Debt Instrument [Line Items]
Applicable spread on base rate option					0.25%
Applicable spread on Eurodollar Rate option					1.25%
Commitment fees calculated on the daily amounts of the available unused commitments					0.15%
Letter of credit fees for performance and commercial letters of credit					0.675%
Letter of credit fees for financial letters of credit					1.25%
Maximum [Member]
Debt Instrument [Line Items]
Applicable spread on base rate option					1.00%
Applicable spread on Eurodollar Rate option					2.00%
Commitment fees calculated on the daily amounts of the available unused commitments					0.325%
Letter of credit fees for performance and commercial letters of credit					1.20%
Letter of credit fees for financial letters of credit					2.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility expiration date	Feb. 03, 2017