Consolidated Balance Sheets - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 1,514,000,000	$ 772,000,000
Receivables, net	2,337,000,000	2,444,000,000
Contract assets	9,094,000,000	9,472,000,000
Inventories	3,619,000,000	2,997,000,000
Other current assets	531,000,000	418,000,000
Total current assets	17,095,000,000	16,103,000,000
Property, plant and equipment, net	6,591,000,000	6,124,000,000
Goodwill	10,604,000,000	10,769,000,000
Intangible assets, net	3,213,000,000	3,494,000,000
Deferred income taxes	3,319,000,000	3,208,000,000
Other noncurrent assets	6,706,000,000	5,178,000,000
Total assets	47,528,000,000	44,876,000,000
Current liabilities
Accounts payable	1,281,000,000	2,402,000,000
Contract liabilities	7,054,000,000	6,491,000,000
Salaries, benefits and payroll taxes	2,466,000,000	2,122,000,000
Current maturities of long-term debt and commercial paper	1,250,000,000	1,500,000,000
Other current liabilities	1,921,000,000	1,883,000,000
Total current liabilities	13,972,000,000	14,398,000,000
Long-term debt, net	11,404,000,000	12,604,000,000
Accrued pension liabilities	13,234,000,000	11,410,000,000
Other postretirement benefit liabilities	337,000,000	704,000,000
Other noncurrent liabilities	5,410,000,000	4,311,000,000
Total liabilities	44,357,000,000	43,427,000,000
Stockholders’ equity
Common stock, $1 par value per share	280,000,000	281,000,000
Additional paid-in capital	0	0
Retained earnings	18,401,000,000	15,434,000,000
Accumulated other comprehensive loss	(15,554,000,000)	(14,321,000,000)
Total stockholders’ equity	3,127,000,000	1,394,000,000
Noncontrolling interests in subsidiary	44,000,000	55,000,000
Total equity	3,171,000,000	1,449,000,000
Total liabilities and equity	$ 47,528,000,000	$ 44,876,000,000