CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net income (loss)		$ 724	$ (225)	$ 677
Less: (Income) loss from discontinued operations, net of tax		(63)	522	(32)
Income from continuing operations		661	297	645
Depreciation of property, plant and equipment		162	166	165
Amortization of intangibles and other assets		44	44	49
Deferred income tax provision (benefit)		43	(66)	113
Stock-based employee compensation expense		49	46	50
Contributions to employee savings plans in L3's common stock		113	110	119
Goodwill impairment charges	[1]	0	384	0
Amortization of pension and postretirement benefit plans net loss and prior service cost		48	67	15
Amortization of bond discounts and deferred debt issue costs (included in interest expense)		8	8	7
Loss related to business divestitures	[2]	0	31	0
Other non-cash items		12	(3)	0
Changes in operating assets and liabilities, excluding amounts from acquisitions, divestitures, and discontinued operations:
Billed receivables		30	50	39
Contracts in process		14	32	7
Inventories		22	(38)	0
Other assets		29	(27)	(17)
Accounts payable, trade		4	(32)	(80)
Accrued employment costs		9	34	(5)
Accrued expenses		(17)	14	(14)
Advance payments and billings in excess of costs incurred		(69)	(6)	65
Income taxes		34	(33)	(7)
Other current liabilities		19	(2)	6
Pension and postretirement benefits		(57)	(8)	(44)
All other operating activities		(61)	1	(25)
Net cash from operating activities from continuing operations		1,097	1,069	1,088
Investing activities:
Business acquisitions, net of cash acquired		(388)	(320)	(57)
Proceeds from the sale of businesses, net of closing date cash balances		561	318	1
Capital expenditures		(216)	(197)	(174)
Dispositions of property, plant and equipment		21	3	4
Other investing activities		6	4	5
Net cash used in investing activities from continuing operations		(16)	(192)	(221)
Financing activities:
Proceeds from sale of senior notes		547	0	996
Redemption of CODES		0	0	(935)
Repurchases, redemptions and maturities of senior notes		(856)	(297)	0
Borrowings under revolving credit facility		819	1,194	1,367
Repayments of borrowings under revolving credit facility		(819)	(1,194)	(1,367)
Common stock repurchased		(373)	(740)	(823)
Dividends paid on L3's common stock		(220)	(214)	(208)
Proceeds from exercise of stock options		53	48	93
Proceeds from employee stock purchase plan		31	34	35
Debt issue costs		(10)	0	(8)
Repurchases of common stock to satisfy tax withholding obligations		(21)	(33)	(27)
Other financing activities		(7)	(3)	(16)
Net cash used in financing activities from continuing operations		(856)	(1,205)	(893)
Effect of foreign currency exchange rate changes on cash and cash equivalents		(13)	(19)	(17)
Net cash (used in) from discontinued operations
Operating activities		(56)	56	54
Investing activities		0	(5)	(8)
Net cash (used in) from discontinued operations		(56)	51	46
Change in cash balance in assets held for sale		0	61	(61)
Net increase (decrease) in cash and cash equivalents		156	(235)	(58)
Cash and cash equivalents, beginning of the year		207	442	500
Cash and cash equivalents, end of the year		$ 363	$ 207	$ 442

[1] Represents non-cash goodwill impairment charges recorded during 2015, including (i) $338 million related to a decline in the estimated fair value of the Vertex Aerospace reporting unit, and (ii) $46 million related to a business retained by L3 in connection with the sale of the NSS business, comprised of (i) $37 million related to the re-allocation of impairment charges recorded for the NSS reporting unit in 2015, and (ii) $9 million related to the re-allocation of goodwill. See Note 6 for additional information.

[2] See Note 3 for information regarding the Company's business divestitures.