Condensed Consolidated Statements Of Financial Position (Unaudited) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 744	$ 75
Accounts receivable, net	492	318
Contract assets	1,134	989
Inventoried costs, net	152	136
Income taxes receivable	163	148
Assets held for sale	154	95
Prepaid expenses and other current assets	42	24
Total current assets	2,881	1,785
Property, plant, and equipment, net	2,907	2,832
Operating lease assets	187	201
Goodwill	1,577	1,373
Other intangible assets, net	527	492
Deferred tax assets	97	108
Miscellaneous other assets	269	240
Total assets	8,445	7,031
Current Liabilities
Trade accounts payable	429	497
Accrued employees' compensation	320	265
Current portion of postretirement plan liabilities	130	130
Current portion of workers' compensation liabilities	233	225
Contract liabilities	604	373
Liabilities held for sale	86	77
Other current liabilities	431	323
Total current liabilities	2,233	1,890
Long-term debt	2,278	1,286
Pension plan liabilities	728	975
Other postretirement plan liabilities	374	380
Workers' compensation liabilities	470	457
Long-term operating lease liabilities	153	164
Other long-term liabilities	329	291
Total liabilities	6,565	5,443
Commitments and Contingencies (Note 16)
Stockholders' Equity
Common stock	1	1
Additional paid-in capital	1,964	1,961
Retained earnings (deficit)	3,330	3,009
Treasury stock	(2,058)	(1,974)
Accumulated other comprehensive income (loss)	(1,357)	(1,409)
Total stockholders' equity	1,880	1,588
Total liabilities and stockholders' equity	$ 8,445	$ 7,031