Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Apr. 02, 2017	Apr. 03, 2016
Cash flows from operating activities
Net income	$ 500,000,000	$ 405,000,000
(Income) loss from discontinued operations, net of tax	(3,000,000)	(1,000,000)
Income from continuing operations	497,000,000	404,000,000
Adjustments to reconcile to net cash provided by (used in) operating activities from continuing operations, net of the effect of acquisitions and divestitures
Depreciation and amortization	130,000,000	124,000,000
Stock-based compensation	57,000,000	54,000,000
Deferred income taxes	(54,000,000)	(30,000,000)
Changes in assets and liabilities
Receivables, net	(155,000,000)	(94,000,000)
Contract assets and contract liabilities	(554,000,000)	(295,000,000)
Inventories	9,000,000	41,000,000
Prepaid expenses and other current assets	125,000,000	143,000,000
Income taxes receivable/payable	244,000,000	189,000,000
Accounts payable	(219,000,000)	(43,000,000)
Accrued employee compensation	(361,000,000)	(351,000,000)
Other current liabilities	(1,000,000)	(43,000,000)
Accrued retiree benefits	283,000,000	221,000,000
Other, net	(42,000,000)	5,000,000
Net cash provided by (used in) operating activities from continuing operations	(41,000,000)	325,000,000
Net cash provided by (used in) operating activities from discontinued operations	0	1,000,000
Net cash provided by (used in) operating activities	(41,000,000)	326,000,000
Cash flows from investing activities
Additions to property, plant and equipment	(86,000,000)	(150,000,000)
Proceeds from sales of property, plant and equipment	11,000,000	1,000,000
Additions to capitalized internal use software	(16,000,000)	(12,000,000)
Purchases of short-term investments	(399,000,000)	0
Maturities of short-term investments	100,000,000	127,000,000
Payments for purchases of acquired companies, net of cash received	(39,000,000)	(57,000,000)
Other	(1,000,000)	0
Net cash provided by (used in) investing activities	(430,000,000)	(91,000,000)
Cash flows from financing activities
Dividends paid	(215,000,000)	(201,000,000)
Contribution from noncontrolling interest in Forcepoint	8,000,000	11,000,000
Other	0	(5,000,000)
Net cash provided by (used in) financing activities	(645,000,000)	(629,000,000)
Net increase (decrease) in cash, cash equivalents and restricted cash	(1,116,000,000)	(394,000,000)
Cash, cash equivalents and restricted cash at beginning of the year	3,303,000,000	2,328,000,000
Cash, cash equivalents and restricted cash at end of period	2,187,000,000	1,934,000,000
Share Repurchase Program [Member]
Cash flows from financing activities
Repurchases of common stock	(400,000,000)	(400,000,000)
Satisfy tax withholding [Member]
Cash flows from financing activities
Repurchases of common stock	$ (38,000,000)	$ (34,000,000)