Unaudited Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 29, 2012		Jul. 01, 2011
Operating activities:
Net income	$ 411		$ 453
Depreciation of property, plant and equipment	87		88
Amortization of intangibles and other assets	32		35
Deferred income tax provision	40		56
Stock-based employee compensation expense	33		34
Contributions to employee savings plans in L-3 Holdings' common stock	75		78
Amortization of pension and postretirement benefit plans net loss and prior service cost	34		26
Amortization of bond discounts (included in interest expense)	1		3
Amortization of deferred debt issue costs (included in interest expense)	3		5
Non-cash portion of debt retirement charge			5
Other non-cash items	3		(3)
Changes in operating assets and liabilities, excluding acquired and divested amounts:
Billed receivables	4		67
Contracts in process	(237)		(182)
Inventories	(68)		(41)
Accounts payable, trade	172		42
Accrued employment costs	(6)		(32)
Accrued expenses	(156)		9
Advance payments and billings in excess of costs incurred	7		(26)
Income taxes	24		(17)
Excess income tax benefits related to share-based payment arrangements	(1)		(2)
Other current liabilities	(29)		(18)
Pension and postretirement benefits	(34)		(35)
All other operating activities	13		(26)
Net cash from operating activities	408		519
Investing activities:
Business acquisitions, net of cash acquired	(216)		(15)
Capital expenditures	(76)		(78)
Dispositions of property, plant and equipment	1		1
Other investing activities	(4)		3
Net cash used in investing activities	(295)		(89)
Financing activities:
Proceeds from sale of senior notes			646
Redemption of senior subordinated notes			(650)
Redemption of CODES			(11)
Borrowings under revolving credit facility	199		371
Repayment of borrowings under revolving credit facility	(199)		(371)
Common stock repurchased	(315)		(429)
Dividends paid on L-3 Holdings' common stock	(98)		(97)
Proceeds from exercise of stock options	8		18
Proceeds from employee stock purchase plan	21		23
Debt issue costs	(6)		(6)
Excess income tax benefits related to share-based payment arrangements	1		2
Other financing activities	(4)
Net cash used in financing activities	(393)		(504)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(3)		15
Net decrease in cash and cash equivalents	(283)		(59)
Cash and cash equivalents, beginning of the period	764		607
Cash and cash equivalents, end of the period	$ 481	[1]	$ 548

[1] Unaudited