Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 991	$ 772
Receivables, net	2,833	2,444
Contract assets	10,497	9,472
Inventories	3,285	2,997
Other current assets	425	418
Total current assets	18,031	16,103
Property, plant and equipment, net	6,140	6,124
Goodwill	10,769	10,769
Intangible assets, net	3,425	3,494
Deferred income taxes	3,169	3,208
Other noncurrent assets	6,150	5,178
Total assets	47,684	44,876
Current liabilities
Accounts payable	3,097	2,402
Contract liabilities	6,796	6,491
Salaries, benefits and payroll taxes	1,861	2,122
Current maturities of long-term debt and commercial paper	1,300	1,500
Other current liabilities	2,349	1,883
Total current liabilities	15,403	14,398
Long-term debt, net	12,621	12,604
Accrued pension liabilities	11,418	11,410
Other postretirement benefit liabilities	698	704
Other noncurrent liabilities	5,022	4,311
Total liabilities	45,162	43,427
Stockholders’ equity
Common stock, $1 par value per share	281	281
Additional paid-in capital	0	0
Retained earnings	16,278	15,434
Accumulated other comprehensive loss	(14,094)	(14,321)
Total stockholders’ equity	2,465	1,394
Noncontrolling interests in subsidiary	57	55
Total equity	2,522	1,449
Total liabilities and equity	$ 47,684	$ 44,876