Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 23, 2016	Sep. 25, 2015
Operating activities:
Net income (loss)	$ 532	$ (63)
Less: (Income) loss from discontinued operations, net of tax	(63)	416
Income from continuing operations	469	353
Depreciation of property, plant and equipment	121	123
Amortization of intangibles and other assets	32	32
Deferred income tax provision	48	5
Stock-based employee compensation expense	34	35
Contributions to employee savings plans in L-3 Holdings' common stock	92	87
Goodwill impairment charges		35
Amortization of pension and postretirement benefit plans net loss and prior service cost	37	50
Amortization of bond discounts and deferred debt issue costs (included in interest expense)	6	6
Loss related to business divestitures		29
Other non-cash items	8	(5)
Changes in operating assets and liabilities, excluding amounts from acquisitions and divestitures, and discontinued operations:
Billed receivables	(69)	36
Contracts in process	(193)	(181)
Inventories	(31)	(77)
Other assets	21	(11)
Accounts payable, trade	130	117
Accrued employment costs	8	41
Accrued expenses	3	(34)
Advance payments and billings in excess of costs incurred	(102)	6
Income taxes		(8)
Other current liabilities	(3)	(6)
Pension and postretirement benefits	(19)	(18)
All other operating activities	(13)	(18)
Net cash from operating activities from continuing operations	579	597
Investing activities:
Business acquisitions, net of cash acquired	(27)	(260)
Proceeds from the sale of businesses, net of closing date cash balances	561	308
Capital expenditures	(126)	(137)
Dispositions of property, plant and equipment	15	2
Other investing activities	7	5
Net cash from (used in) investing activities from continuing operations	430	(82)
Financing activities:
Borrowings under revolving credit facility	335	861
Repayment of borrowings under revolving credit facility	(335)	(861)
Redemption of senior notes	(298)
Common stock repurchased	(326)	(605)
Dividends paid on L-3 Holdings' common stock	(166)	(163)
Proceeds from exercises of stock options	49	41
Proceeds from employee stock purchase plan	23	26
Repurchases of common stock to satisfy tax withholding obligations	(20)	(33)
Other financing activities	(8)	(1)
Net cash used in financing activities from continuing operations	(746)	(735)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(3)	(14)
Net cash (used in) from discontinued operations:
Operating activities	(56)	58
Investing activities		(4)
Net cash (used in) from discontinued operations	(56)	54
Change in cash balance in assets held for sale		61
Net increase (decrease) in cash and cash equivalents	204	(119)
Cash and cash equivalents, beginning of the period	207	442
Cash and cash equivalents, end of the period	$ 411	$ 323