Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Sep. 27, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 772,000,000		$ 2,861,000,000	$ 1,837,000,000	$ 1,090,000,000
Receivables, net	2,444,000,000		2,265,000,000
Contract assets	9,472,000,000		7,992,000,000
Inventories	2,997,000,000		2,878,000,000
Other current assets	418,000,000		1,509,000,000
Total current assets	16,103,000,000		17,505,000,000
Property, plant and equipment, net	6,124,000,000		5,775,000,000
Goodwill	10,769,000,000		10,807,000,000	10,764,000,000
Intangible assets, net	3,494,000,000		3,797,000,000
Deferred income taxes	3,208,000,000		3,156,000,000
Other noncurrent assets	5,178,000,000		5,580,000,000
Total assets	44,876,000,000		46,620,000,000
Current liabilities
Accounts payable	2,402,000,000		1,467,000,000
Contract liabilities	6,491,000,000		7,028,000,000
Salaries, benefits and payroll taxes	2,122,000,000		1,785,000,000
Current maturities of long-term debt and commercial paper	1,500,000,000		750,000,000
Other current liabilities	1,883,000,000		1,883,000,000
Total current liabilities	14,398,000,000		12,913,000,000
Long-term debt, net	12,604,000,000		13,513,000,000
Accrued pension liabilities	11,410,000,000		15,703,000,000
Other postretirement benefit liabilities	704,000,000		719,000,000
Other noncurrent liabilities	4,311,000,000		4,548,000,000
Total liabilities	43,427,000,000		47,396,000,000
Stockholders’ equity
Common stock, $1 par value per share	281,000,000		284,000,000
Additional paid-in capital	0	$ 0	0
Retained earnings	15,434,000,000		11,405,000,000
Accumulated other comprehensive loss	(14,321,000,000)		(12,539,000,000)
Total stockholders’ equity (deficit)	1,394,000,000		(850,000,000)
Noncontrolling interests in subsidiary	55,000,000		74,000,000
Total equity (deficit)	1,449,000,000		(776,000,000)	$ 1,477,000,000	$ 3,097,000,000
Total liabilities and equity	$ 44,876,000,000		$ 46,620,000,000