CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net income	$ 3,329,000,000	$ 2,882,000,000	$ 2,001,000,000
(Income) loss from discontinued operations, net of tax	(1,000,000)	1,000,000	(2,000,000)
Income from continuing operations	3,328,000,000	2,883,000,000	1,999,000,000
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	605,000,000	568,000,000	550,000,000
Stock-based compensation	184,000,000	165,000,000	173,000,000
Loss on repayment of long-term debt	0	0	39,000,000
Deferred income taxes	(28,000,000)	(24,000,000)	252,000,000
Changes in assets and liabilities
Receivables, net	296,000,000	(327,000,000)	(157,000,000)
Contract assets and contract liabilities	(534,000,000)	28,000,000	88,000,000
Inventories	87,000,000	(166,000,000)	14,000,000
Prepaid expenses and other current assets	45,000,000	73,000,000	204,000,000
Income taxes receivable/payable	(275,000,000)	174,000,000	(193,000,000)
Accounts payable	(168,000,000)	406,000,000	(94,000,000)
Accrued employee compensation	295,000,000	165,000,000	111,000,000
Other current liabilities	71,000,000	(108,000,000)	106,000,000
Accrued retiree benefits	731,000,000	(421,000,000)	(250,000,000)
Other, net	(155,000,000)	12,000,000	(95,000,000)
Net cash provided by (used in) operating activities from continuing operations	4,482,000,000	3,428,000,000	2,747,000,000
Net cash provided by (used in) operating activities from discontinued operations	(2,000,000)	0	(2,000,000)
Net cash provided by (used in) operating activities	4,480,000,000	3,428,000,000	2,745,000,000
Cash flows from investing activities
Additions to property, plant and equipment	(942,000,000)	(763,000,000)	(543,000,000)
Proceeds from sales of property, plant and equipment	25,000,000	2,000,000	46,000,000
Additions to capitalized internal-use software	(65,000,000)	(58,000,000)	(68,000,000)
Purchases of short-term investments	0	0	(696,000,000)
Maturities of short-term investments	0	309,000,000	517,000,000
Payments for purchases of acquired companies, net of cash received	(8,000,000)	0	(93,000,000)
Proceeds from sale of business, net of transaction costs	0	11,000,000	0
Payments for settlement of treasury rate lock	(17,000,000)	0	0
Other	1,000,000	(22,000,000)	20,000,000
Net cash provided by (used in) investing activities from continuing operations	(1,006,000,000)	(521,000,000)	(817,000,000)
Net cash provided by (used in) investing activities from discontinued operations	3,000,000	0	0
Net cash provided by (used in) investing activities	(1,003,000,000)	(521,000,000)	(817,000,000)
Cash flows from financing activities
Dividends paid	(1,036,000,000)	(975,000,000)	(910,000,000)
Net borrowings (payments) on commercial paper	(300,000,000)	0	300,000,000
Repayments of long-term debt	0	0	(591,000,000)
Loss on repayment of long-term debt	0	0	(38,000,000)
Acquisition of noncontrolling interest in Forcepoint	(588,000,000)	0	0
Contribution from noncontrolling interest in Forcepoint	0	0	8,000,000
Other	(10,000,000)	(5,000,000)	0
Net cash provided by (used in) financing activities	(2,803,000,000)	(2,398,000,000)	(2,116,000,000)
Net increase (decrease) in cash, cash equivalents and restricted cash	674,000,000	509,000,000	(188,000,000)
Cash, cash equivalents and restricted cash at beginning of year	3,624,000,000	3,115,000,000	3,303,000,000
Cash, cash equivalents and restricted cash at end of year	4,298,000,000	3,624,000,000	3,115,000,000
Share Repurchase Program [Member]
Cash flows from financing activities
Repurchases of common stock	(800,000,000)	(1,325,000,000)	(800,000,000)
Satisfy tax withholding [Member]
Cash flows from financing activities
Repurchases of common stock	$ (69,000,000)	$ (93,000,000)	$ (85,000,000)