Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 24, 2016	Jun. 26, 2015
Operating activities:
Net income	$ 381	$ 233
Less: Income from discontinued operations, net of tax	(63)	(8)
Income from continuing operations	318	225
Depreciation of property, plant and equipment	81	83
Amortization of intangibles and other assets	21	21
Deferred income tax provision (benefit)	29	(14)
Stock-based employee compensation expense	19	23
Contributions to employee savings plans in L-3 Holdings' common stock	58	57
Amortization of pension and postretirement benefit plans net loss and prior service cost	25	33
Amortization of bond discounts and deferred debt issue costs (included in interest expense)	4	4
Loss related to business divestitures		20
Other non-cash items	9	(6)
Changes in operating assets and liabilities, excluding amounts from acquisitions and divestitures, and discontinued operations:
Billed receivables	(62)	21
Contracts in process	(84)	(144)
Inventories	(24)	(70)
Other assets	(5)	7
Accounts payable, trade	118	77
Accrued employment costs	(23)	8
Accrued expenses	(2)	(43)
Advance payments and billings in excess of costs incurred	(111)	40
Income taxes	25	(6)
Other current liabilities	(10)	7
Pension and postretirement benefits		13
All other operating activities	(17)	(47)
Net cash from operating activities from continuing operations	369	309
Investing activities:
Business acquisitions, net of cash acquired	(27)	(260)
Proceeds from the sale of businesses, net of closing date cash balances	575	304
Capital expenditures	(75)	(83)
Dispositions of property, plant and equipment	11	1
Other investing activities	6	5
Net cash from (used in) investing activities from continuing operations	490	(33)
Financing activities:
Borrowings under revolving credit facility	320	600
Repayment of borrowings under revolving credit facility	(320)	(600)
Redemption of senior notes	(298)
Common stock repurchased	(276)	(346)
Dividends paid on L-3 Holdings' common stock	(112)	(111)
Proceeds from exercises of stock options	38	39
Proceeds from employee stock purchase plan	16	17
Repurchases of common stock to satisfy tax withholding obligations	(20)	(33)
Other financing activities	(6)	(11)
Net cash used in financing activities from continuing operations	(658)	(445)
Effect of foreign currency exchange rate changes on cash and cash equivalents		(8)
Cash (used in) from discontinued operations:
Operating activities	(56)	29
Investing activities		(2)
Cash (used in) from discontinued operations	(56)	27
Change in cash balance in assets held for sale		61
Net increase (decrease) in cash and cash equivalents	145	(89)
Cash and cash equivalents, beginning of the period	207	442
Cash and cash equivalents, end of the period	$ 352	$ 353