Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net earnings	$ 1,901	$ 3,232
Adjustments to reconcile to net cash (used in) provided by operating activities:
Depreciation and amortization	633	594
Stock-based compensation	42	40
Deferred income taxes	(399)	(121)
Gain on sale of business	0	(1,980)
Net periodic pension and OPB income	(597)	(546)
Pension and OPB contributions	(71)	(74)
Changes in assets and liabilities:
Accounts receivable, net	(920)	(453)
Unbilled receivables, net	(719)	(312)
Inventoried costs, net	(98)	(104)
Prepaid expenses and other assets	114	26
Accounts payable and other liabilities	(724)	(202)
Income taxes payable, net	86	881
Other operating activities, net	67	(19)
Net cash (used in) provided by operating activities	(685)	962
Investing activities
Divestiture of IT services business	0	3,400
Capital expenditures	(507)	(435)
Proceeds from sale of equipment to a customer	0	56
Other investing activities, net	39	1
Net cash (used in) provided by investing activities	(468)	3,022
Financing activities
Payments of long-term debt	0	(2,236)
Common stock repurchases	(640)	(2,143)
Cash dividends paid	(519)	(486)
Payments of employee taxes withheld from share-based awards	(48)	(31)
Other financing activities, net	(1)	(54)
Net cash used in financing activities	(1,208)	(4,950)
Decrease in cash and cash equivalents	(2,361)	(966)
Cash and cash equivalents, beginning of year	3,530	4,907
Cash and cash equivalents, end of period	$ 1,169	$ 3,941