CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020		Dec. 31, 2019
Cash and cash equivalents	$ 1,177		$ 790
Accounts receivable—trade, net	832		942
Accounts receivable—other	186		178
Contracts in progress	979		703
Other current assets	192		210
Accounts payable	796		1,083
Advance billings on contracts	1,177		1,191
Accrued liabilities, current	$ 1,302		$ 1,530
Common stock, par value	$ 1.00		$ 1.00
Common stock, shares authorized	255,000,000		255,000,000
Common stock, shares issued	196,000,000	[1]	196,000,000
Treasury stock, shares	3,000,000		3,000,000
Variable Interest Entities ("VIEs") [Member]
Cash and cash equivalents	$ 239		$ 213
Accounts receivable—trade, net	92		102
Accounts receivable—other	29		32
Contracts in progress	246		195
Other current assets	25		25
Accounts payable	149		182
Advance billings on contracts	504		542
Accrued liabilities, current	$ 64		$ 69

[1] ^{Amounts in this table may not sum due to rounding.}