Unaudited Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012		Apr. 01, 2011
Operating activities:
Net income	$ 203		$ 207
Depreciation of property, plant and equipment	43		42
Amortization of intangibles and other assets	16		17
Deferred income tax provision	20		26
Stock-based employee compensation expense	14		15
Contributions to employee savings plans in L-3 Holdings' common stock	38		40
Amortization of pension and postretirement benefit plans net loss and prior service cost	17		13
Amortization of bond discounts (included in interest expense)	1		2
Amortization of deferred debt issue costs (included in interest expense)	2		2
Non-cash portion of debt retirement charge			5
Other non-cash items			2
Changes in operating assets and liabilities, excluding acquired and divested amounts:
Billed receivables	(6)		38
Contracts in process	(148)		(159)
Inventories	(39)		(32)
Accounts payable, trade	102		116
Accrued employment costs	(15)		(27)
Accrued expenses	(112)		(32)
Advance payments and billings in excess of costs incurred	10		(33)
Income taxes	62		44
Excess income tax benefits related to share-based payment arrangements	(1)		(1)
Other current liabilities	(16)		(4)
Pension and postretirement benefits	(30)		(35)
All other operating activities	(24)		(26)
Net cash from operating activities	137		220
Investing activities:
Business acquisitions, net of cash acquired	(205)
Capital expenditures	(27)		(35)
Dispositions of property, plant and equipment			1
Other investing activities	(2)
Net cash used in investing activities	(234)		(34)
Financing activities:
Proceeds from sale of senior notes			646
Redemption of senior subordinated notes			(650)
Redemption of CODES			(11)
Borrowings under revolving credit facility	16		81
Repayment of borrowings under revolving credit facility	(16)		(81)
Common stock repurchased	(138)		(205)
Dividends paid on L-3 Holdings' common stock	(49)		(49)
Proceeds from exercise of stock options	6		7
Proceeds from employee stock purchase plan	12		13
Debt issue costs	(6)		(6)
Excess income tax benefits related to share-based payment arrangements	1		1
Other financing activities	(5)		(3)
Net cash used in financing activities	(179)		(257)
Effect of foreign currency exchange rate changes on cash and cash equivalents	5		12
Net decrease in cash and cash equivalents	(271)		(59)
Cash and cash equivalents, beginning of the period	764		607
Cash and cash equivalents, end of the period	$ 493	[1]	$ 548

[1] Unaudited