CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012
Operating activities:
Net income	$ 380	$ 411
Less: Income from discontinued operations, net of tax		33
Income from continuing operations	380	378
Depreciation of property, plant and equipment	81	85
Amortization of intangibles and other assets	25	26
Deferred income tax provision	13	35
Stock-based employee compensation expense	28	29
Contributions to employee savings plans in L-3 Holdings' common stock	61	68
Amortization of pension and postretirement benefit plans net loss and prior service cost	43	34
Amortization of bond discounts and deferred debt issue costs (included in interest expense)	3	4
Changes in operating assets and liabilities, excluding amounts from acquisitions, divestitures and discontinued operations:
Billed receivables	(76)	3
Contracts in process	(10)	(273)
Inventories	(17)	(68)
Other assets	(44)	8
Accounts payable, trade	50	177
Accrued employment costs	20	1
Accrued expenses	(64)	(158)
Advance payments and billings in excess of costs incurred	(89)	20
Income taxes	27	29
Excess income tax benefits related to share-based payment arrangements	(2)	(1)
Other current liabilities	(3)	(20)
Pension and postretirement benefits	3	(34)
All other operating activities	(33)	(6)
Net cash from operating activities from continuing operations	396	337
Investing activities:
Business acquisitions, net of cash acquired	(1)	(216)
Proceeds from the sale of a business	4
Capital expenditures	(110)	(76)
Dispositions of property, plant and equipment	9	1
Other investing activities	(6)	(4)
Net cash used in investing activities from continuing operations	(104)	(295)
Financing activities:
Borrowings under revolving credit facility	994	199
Repayment of borrowings under revolving credit facility	(994)	(199)
Common stock repurchased	(248)	(315)
Dividends paid on L-3 Holdings' common stock	(101)	(98)
Proceeds from exercises of stock options	33	8
Proceeds from employee stock purchase plan	18	21
Debt issue costs		(6)
Excess income tax benefits related to share-based payment arrangements	2	1
Other financing activities	(8)	(3)
Net cash used in financing activities from continuing operations	(304)	(392)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(9)	(3)
Cash from (used in) discontinued operations:
Operating activities		71
Financing activities		(1)
Cash from discontinued operations		70
Net (decrease) increase in cash and cash equivalents	(21)	(283)
Cash and cash equivalents, beginning of the period	349	764
Cash and cash equivalents, end of the period	$ 328	$ 481